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HomeMy WebLinkAbout06.23.2025 UC Meeting Packet AGENDA Utility Commission Regular Meeting Monday, June 23, 2025 5:30 PM Conference Room, City Hall 1. CALL TO ORDER 2. ADDITIONS OR CORRECTIONS TO AGENDA 3. AUDIENCE INPUT 4. APPROVAL OF MINUTES a. March 31, 2025, Utility Commission Meeting Minutes 5. PUBLIC HEARINGS 6. OLD BUSINESS a. Water Efficiency Rebate Update b. Manganese Monitoring Update 7. NEW BUSINESS a. 2024 Rosemount Surface Water Quality Monitoring Program Report 8. EXECUTIVE DIRECTOR’S REPORT a. Well Pumping Report b. Action Item / Issues list c. Set Next Meeting Agenda – September 22, 2025 9. ADJOURNMENT Page 1 of 199 ROSEMOUNT UTILITY COMMISSION REGULAR MEETING PROCEEDINGS MARCH 31, 2025 CALL TO ORDER Pursuant to due call and notice thereof, a regular meeting of the Utility Commission was held on Monday, March 31, 2025, at 5:30 PM in Rosemount Public Works & Police, EOC Room, 14041 Biscayne Ave. Chairperson Johnson called the meeting to order with Commissioners Miller and Demuth. Staff present included the following: City Administrator Martin, Public Works Director Egger, and Recording Secretary Simonson. ADDITIONS OR CORRECTIONS TO AGENDA None. AUDIENCE INPUT None. APPROVAL OF MINUTES 4.a. November 24, 2024, Utility Commission Meeting Minutes Motion by Demuth, Second by Miller Motion to approve the November 24, 2024, Utility Commission Meeting Minutes Ayes: 3. Nays: None. Motion Carried. PRESENTATION None. OLD BUSINESS 6.a. Manganese Monitoring Update Director Egger stated that staff continue quarterly sampling, though access is limited to 60–70% of sites due to winterized outdoor faucets. Q1 and Q2 2025 results will be presented at the June meeting. NEW BUSINESS 7.a. Set Meeting Dates for 2025-2026 Motion by Demuth; Second by Miller Motion to set the 2025-2026 Utility Commission meeting dates per attached calendar. Ayes: 3. Nays: None. Motion Carried. Commissioner Miller noted she is not available for the June 23, 2025, Utility Commission meeting. EXECUTIVE DIRECTOR’S REPORT 8.a. 2024 Well Pumping Report & 2025 Well Pumping Record through February The total amount of water pumped from wells in 2024 is 10% lower than in 2023. The decrease in water usage is likely due to the abundant precipitation received in the spring. Page 2 of 199 ROSEMOUNT UTILITY COMMISSION REGULAR MEETING PROCEEDINGS MARCH 31, 2025 Director Egger noted that with the new well 17, a new appropriation permit will be required. That process will take place after the well is built to determine capacity. Commissioners asked about potential upgrades to the splash pad, specifically the addition of a chlorinated recirculation system. Staff responded that the Parks & Recreation Department is currently in the planning phase of a Central Park redesign. A recirculation system for the splash pad will be included in the scope and budgeting process but will require City Council approval. 8.b. 2024 City Water Usage with 10-Year Trend Chart Director Egger noted that government water usage in 2024 was below 38 million gallons—the lowest amount recorded in the past 5 years. It was also noted that there is currently insufficient data to assess water usage at the Public Works & Police Building. Several years of data will be needed to establish a reliable estimate of its annual consumption. 8.c. Top 10 Water Users 2024 Staff pointed out that there are no changes to the top 10 water users in the city for 2024. Some of these top users include multifamily residential properties, not just industrial or commercial accounts. When current residential rates were applied to the usage levels of the top 10 users, billing amounts increased slightly. This analysis may help inform future utility rate modeling for 2026. Commissioners requested further evaluation of how residential water rates impact high-, mid-, and low-volume commercial and industrial users. Commissioners also inquired about the 2021 tier 4 rates, noting that rate changes appeared to have occurred in some areas but not others. Staff will review the 2021 meeting minutes and rate models for clarification. 8.d. Well 17 Update Drilling mobilization for Well 17 began last week. The contractor is currently drilling the pilot hole and collecting geological samples. Once this phase is complete, full-width boring of the well will begin. Staff plan to schedule a site visit for commissioners later in the process. A separate contract for the well house structure has been awarded, but construction will not begin until drilling is complete. Well 17 is expected to be operational by summer 2026. 8.e. Action Item / Issues list i. Presentation by Dan Schultz of the Parks & Rec Department on the Central Park renovation at a future commission meeting. ii. Confirm deadline of 3/28/2025 for the Met Council Equity-Focused Water Efficiency Grant Pilot Program. 8.f. Set Next Meeting Agenda – June 23, 2025 i. Update on Water Efficiency Grant Program ii. Water Quality Pond Monitoring Report Page 3 of 199 ROSEMOUNT UTILITY COMMISSION REGULAR MEETING PROCEEDINGS MARCH 31, 2025 iii. Manganese sampling update iv. Review of 2024 Consumer Confidence Report ADJOURNMENT There being no further business to come before the Utility Commission at the regular meeting and upon a motion by Demuth and a second by Miller, the meeting was adjourned at 6:32 p.m. Respectfully submitted, Amy Simonson Public Works Office Specialist Page 4 of 199 EXECUTIVE SUMMARY Utility Commission Regular Meeting: June 23, 2025 AGENDA ITEM: Water Efficiency Rebate Update AGENDA SECTION: OLD BUSINESS PREPARED BY: Amy Simonson, Public Works Office Specialist AGENDA NO. 6.a. ATTACHMENTS: 2025.06.23 Water Efficiency and Stormwater Rebate Update APPROVED BY: RECOMMENDED ACTION: Informational Only BACKGROUND Summary and updates on the Water Efficiency Rebate and Stormwater Rebate program activity up to June 13, 2025. The current grant program is 2024-2026. RECOMMENDATION None Page 5 of 199 ___________________________________________________________________________ UTITLIY COMMISSION Quarterly Water Efficiency Rebate Update: The City of Rosemount was awarded a Water Efficiency Grant from the Metropolitan Council (MCES) in the amount of $27,000 for the 2024-26 grant cycle. As part of this program, the following rebate amounts are allowed: •$50 for Water Sense Toilets •$150 for Energy Star Washers •$150 for Energy Star Dishwashers •$150 for Water Sense Irrigation Controllers •$200 for Irrigation system audits The Vermillion River Joint Powers Organization (VRWJPO) ended its program partnering with cities in the county to provide funding for multi-family residential properties for low-cost irrigation audits and improvement cost share grants. The City Council approved the Irrigation Efficiency Grant Program as a replacement at its August 20, 2024, meeting. The City is working on reaching out to HOAs and has received some interest in the updated program. Table 1 provides a summary of the entire rebate program activity through Q1 2025. Table 1 2020 2021 2022 2023 2024 2025 Gallons of Water Saved Annually (est.)386,800 200,200 *1,665,936 687,136 31,600 73,800 Total Rebate $4,971.67 $3,790.26 $20,436.74 $11,391.48 $1,300 $2,850.00 Municipality Contribution (25%)$1,242.92 $911.15 $10,902.94 $2,922.87 $325 $712.50 Irrigation Controllers Replaced:35 1 18 13 0 0 Toilets Replaced:6 1 7 11 2 6 Clothes Washers Replaced: 8 1 5 8 6 9 Dishwashers Replaced 0 0 0 3 2 6 Audits (Residential):1 0 0 0 0 0 Commercial Audit In a partnership with the Vermillion River Watershed Joint Powers Organization (VRWJPO) on their Urban Water Conservation Program. 2021 Municipality Contribution partially provided by Stormwater Utility. 6 2 0 0 *Includes commercial audit annual water savings **Table data is annual and not by grant period Quarterly Stormwater Rebate Update: In May 2019, the Utility Commission recommended City Council adopt a rebate program for residents Page 6 of 199 2 to install projects on their property to improve stormwater quality and reduce runoff volume. In March 2020, City Council approved the Stormwater Rebate Policy and established a maximum amount of $5,000. Table 2 provides a summary of the entire rebate program activity. Number of BMPs installed for each category in (parentheses) following dollar amount listed Table 2 2020 2021 2022 2023 2024 2025 Total Rebate $0 $147.85 $77.50 $1,840.03 $540 $20 Rain Barrels:$0 $86.94 (5)$77.50 (4)$40 (2)$40(2)$20 Cisterns & Rainwater Harvesting:$0 $0 $0 $0 $0 $0 Raingardens: $0 $0 $0 $1,800.03 (4)$500(1)$0 Native Plantings:$0 $60.91 (1)$0 $0 $0 $0 Buffers: $0 $0 $0 $0 $0 $0 Stormwater Reuse:$0 $0 $0 $0 $0 $0 Permeable Pavers & Pavements $0 $0 $0 $0 $0 $0 Here is a summary of advertisements of the program in 2025: •News & Highlights Post https://www.rosemountmn.gov/ •The City Newsletter •Information at Home & Business Expo in March •Included in course materials for Landscaping for Clean Water Workshops •Individual staff contacts with residents •Monthly social media posts •1st quarter utility insert Staff will continue to publicize these programs via social media, city newsletters, staff updates and additional methods. Page 7 of 199 EXECUTIVE SUMMARY Utility Commission Regular Meeting: June 23, 2025 AGENDA ITEM: Manganese Monitoring Update AGENDA SECTION: OLD BUSINESS PREPARED BY: Nick Egger, Public Works Director AGENDA NO. 6.b. ATTACHMENTS: Manganese Sampling Locations Map, Manganese Sample Results Summary Q1 & Q2 2025, Manganese Sample Results Chart MVTL Measurements Q1 & Q2 2025, Well Pumping Contributions - Manganese Sampling Dates Q1 & Q2 2025, MVTL Sample Results Report - Q1 2025 (Combined), MVTL Sample Results Report - Q2 2025 APPROVED BY: NAE RECOMMENDED ACTION: Informational only BACKGROUND Staff continued to collect quarterly tap water samples from several dozen locations throughout the City over winter quarter (February/March) and earlier this spring (early May). Samples were collected from as many properties as were available on account of access to a running tap at the property (winter conditions) and as staff had availability to make the rounds, so although most properties were sampled, there were some for which a sample was not collected. As with previous rounds of sampling, the City measured manganese concentrations for all samples and also sent companion samples to Minnesota Valley Testing Lab (MVTL) for independent third-party analysis. • For the Commissioners' information, the following materials have been included:A summary table of all results from the February/March (Q1 2025) and May (Q2 2025) sampling periods, showing manganese concentration data from both the City (orange) and MVTL (blue) analyses • A chart plotting the MVTL analysis results for both Q1 and Q2 samples • Tables detailing the pumping contributions from each well on the sample collection days • The sample results reports from MVTL for Q1 & Q2 Staff will continue to conduct an additional one to two quarterly rounds of samples to get a complete annual cycle's worth of data, which will then be taken in totality as a basis for discussion and consideration of next steps by the City. RECOMMENDATION Informational only Page 8 of 199 Page 9 of 199 DARTMOU T H P A T H AB B E Y F I E L D A V E BL A N C A A V E 139TH S T W AD D I S O N A V E AT W O O D T R L UPPER 145TH ST W BR A Z I L A V E COBBLER AVE DALTONLN 151ST CT W D A R N E L L C T SH A N N O N P K W Y AUTU M N P A T H CO L U M B A R Y C T ASK E A T O N P L C PR I V A T E R D A U T U M N W O O D C T ANNAGAIRE CURV C O NNEMARA TR 151ST ST W APPIAN WAY BLOOMFIELD CT C A R R A C H A V E DANVILLE C T ATHENA WAY 138TH ST E AY REF IEL D CT C O N N E M A R A T R A T H E N A C T C A RB A C H W AY 13 0 T H W A Y ALLERTON WAY BR I A N B O R U A V E DAHLIACT AMIEN S CT 152ND ST W 150TH ST W WAY 145TH ST W AS H F I E L D A V E 144TH ST W DA N B U R Y A V E AVER Y W A Y 142ND ST E 137th ST W BI R C H W O O D A V E BA C A R D I A V E CO B A L T L N 143RD ST W 142ND ST W D A VY CT DANVILLE A V E W BOU L DE R T RL AR D MULLIVAN LN GLE N N C T 132ND CT W 140 T H C T W D O D D BLVD SHANNON PKWY SH A N N O N P K W Y BLA C K B I R D W A Y C R E G G S C I R UPPER 149THSTW 145TH ST W BA R B A R A A V E DECEMBER WAY A D E L L E A V E 150TH ST W (CSAH 42) BU R N L E Y A V E C O A C H F O R D BIR D S O N G CT 148TH ST W DE N V E R C T B O U L D E R C T 135TH ST W CI C E R O N E Ad a r e W a y 145TH ST E (CSAH 42 ) DA N V I L L E A V E W BL A N C A A V E W CIC E RONE CT DAPPLE CIR DARLING PATH C L A RET CIR CHORLEY AVE W 139TH ST W 153RD ST W C I R CR OSSCROFT AVE BEECH ST W 138TH ST W 157TH CT W C L A R E D O W N S P A T H 154TH ST W ACHILLES DR S R O B E R T T R L ( S T H 3 ) 133RD CT W 153RD ST W ASHDALE AVE AT W O O D C I R C R A N B E R R Y DELTA C T A LLIUM CT D A N U B E L N DE L M A R C T DA H O M E Y A V E W DI A M O N D P A T H ( C R 3 3 ) COLUMBIA WAY CR A N D A L L A V E CAR LIN G FOR D W A Y CH I P P E N D A L E A V E LOWER 147TH ST W 143RD S T E ASHL E Y C T BE N G A L A V E W B L O O M F I E L D P AT H ALDBOROUGH AVE A I L E S B U R Y A V E UPPER 135TH ST W DA N V I L L E A V E C R U M P E T PATH BA B C O C K A V E ARDA R R A RID G E R D 144TH ST W C R O L L Y P A TH BR E M E N A V E 138TH ST W 141ST ST W COLESHIRE PATH BLACKBERRY W A Y BOYSENBERRY CT A U B U R N A V E B U T T E R F L Y PA T H 130TH ST W 139TH ST CO U C H F O R D AV E 154TH ST W DARLING PATH BLOOMFIELD PL A P P L E W O O D TRL BRENNER CT AD A N A V E EVER M O O R P K WY 155TH ST W ARDCURRA RD A U GUSTA WAY 136TH ST W BU R G U N D Y CT CHASEWOOD COURT 145TH ST W (CSAH 42) WA Y UPPER 138TH ST W 159TH CT W DEC C T D E C E M B ER TRL APOLL O W A Y BONAIRE PATH W ADAMSTOWN DR 146TH ST W AZAL E A C T 128TH ST W EVERLEIGH CIR ARD G I L L A N R D D O D D B L V D 147TH ST W CARBU R Y CANADAAVE COUC H T O W N C T STA T I O N T R L BITTERSWEET CIR 151ST ST W D A M A S K AVE S UPPER 149TH ST W ASHBR O O K P A T H 160TH ST W (CSAH 46) 137TH ST W 155TH ST W BRASSPKWY CO L O R A D O A V E DA M A S K A V E W 148TH ST W CHARLSTON CT CO V I N G T O N A V E AT H G O E D R A U T U M NWOODAV E DE K A L B A V E CONNEMARA TR E V E R M O OR PKWY BR I L L I A N T G E M A V E A S H T O W N LN LOWER 150TH ST W DA V C T UPPER 141ST ST E DELLWOODWAY BONAIRE PATH W ARC T I C C I R DA I S Y C T D A W S O N C T C R O S S M O O R A V E S CR O M P T O N A V E 1 5 6 T H ST W BLOOMFIELD PATH CA M E R O L N AILES B U R Y C T 152ND ST E A V ALONPATH BIRMINGHAMCT A U T U MN RUN ALMERIA TRL BA Y B E R R Y TRL CU R R A N T C I R BR O O K S T O N E PA T H CA M B R I A N A V E UPPER 156TH CT W 149TH ST W C A R B U RY AVE CIMAR R O N WAY DI A M O N D P A T H ( C S A H 3 3 ) CH A R L S T O N A V E 142ND C T W BI R N A M W O O D 141ST CT W BO S T O N CIR CRYSTA L P A TH ALBA N Y A V E A U T U M N P A T H C R U M FIE L D P A T H AULDENAVE DAR J E E L I N G CT DA L L A R A A V E W 137TH S T W 153RD ST W 149TH ST 138T H C T W ARD G I L L I A N R D BU R M A A V E CROCUS W A Y AILESBURY AVE CRANFO R D C I R 146TH ST W 143RD ST E 136TH CT E CO B B L E R A V E S R O B E R T T R L ( S T H 3 ) CLAREDOWN S W A Y WA Y BI S C A Y N E A V E EVERLEIGH CIR B U R G U N D Y AV E DA N B U R Y C T C ANA DA CIR DEARBOR N P A T H C H I LI C T ALLERTON WAY C R O S S CROFT AVE DAKOTA DR CUMBERLANDAVE 156TH ST W AL D E R W A Y DA L L A S C T 140TH ST E A R BOR PATH CO R N E L L CT S 156TH ST W ARTAINE TRL 143RD ST W C O U CHTOW N CT 128TH ST W UPPER 149TH ST W A V A N TIAVE AULDEN AVE S ROBERT TR L ( S T H 3 ) U P P E R 1 5 6 T HSTW AN NESTO W N RD CH I P P E N D A L E A V E CH I L I A V E 160TH ST E (CSAH 46) A T H E N R Y CHILI A V E CORMA C K C I R CASCADE PATH D A N BURY PATH A Z A L E A A V E 134TH ST W A R D R O E A V E AUTUMNCT BIRCH S T W UPPER 147TH ST W BLA R N E Y CT DA N V I L L E A V E W C R O F T O N C T CA F F R E Y C T 152ND CT W ABBEYFIELD AVE 145TH ST W B R O NZE PKWY CARDINAL C T 151ST S T W A L M A A V E CO R C O R A N AV E 151ST ST W 140TH CIR 133RD ST W AD D I S O N W A Y CIMARRON AVE W COBALT DRIVE AS P E N A V E DARWIN WAY PA T H AR D M O R E CT U. 1 4 9 T H CT 136TH ST W ASTER BLVD LOWER 147TH ST W C O P PER CT C I M M A R O N A V E CIMARRON AVE W BEL M O N T T R AUBURN AVE WAY 143RD ST W 142ND ST W CH O K E C H E R R Y A V E BLOOM FIELD WAY CIMARRON AVE W D R U M CLIFFECT BONAIRE PATH E AU R O R A A V E CL A R E T A V E CRO S S L O U G H T R DAP P L E C T Ac e r A v e BU N D O R A N A V E 150TH ST W ASHFO R D P A T H CO R N E L L CT N 143RD ST W ARBO R VITAE D A M A S K C T DA N U B E L N S R O B E R T T R L ( S T H 3 ) B I S C A Y NE WAY ABBEYFIELD AVE 147TH ST W C O N N E M A R A T R KAYL E M O R E T R L 147TH S T W BL A N C A A V E W 150TH ST W (CSAH 42) BA N Y A N L N B R O U GHS H ANE A V E B I S C A Y N E AV E 149TH ST W BO I S E C I R UPPER 145TH ST W ADAIR AVE C RO SSMOOR AVE 156TH ST E C R O S S C L IFF E PATH ATW A T E R C T AZALEA PAT H 143RD CT E ART H U R C T 145TH ST W BLANCAAVE 13 3R D ST W 158TH CIR W 145TH ST W AUTUMN W O O D W A Y CARR A K A Y W A Y 136TH ST E ABBEY F I E L D C T CRO M WELL TR DA N N E R P A T H B O U L DE R AVE BIR C H W O O D A V E BA C A R D I A V E CHROME AVE C O U C H T O W N A V E ADELAID E A V E DA R L I N G P A T H BURGUNDY WAY BELMONTC T CR O O K H A V E N CT DAKOTA LN A R D R O E A V E AD R I A N C T CO R C H M A N AV E 136TH ST W DODD B L V D CH E V E L L E CT N UPPER 145TH ST W A P O L L O C T CROSSRIDGE WAY UPPER 143R D S T W AK R O N A V E ( C R 7 3 ) BELFAST CT COLUM B I A C T AGHAMORE TRL BUSINESS P K WY DRUMCLIFFE CIR CINN A M O N W A Y A UDOBON WAY CH E S T N U T AV I L A A V E 143RD ST W CON N E M A R A T R CA M E O A V E DAN D E R C T D A R T M O O R C T BONAIRE PATH E 150 T H S T W ( C S A H 4 2 ) UPPER 142ND ST E 1 4 0 T H ST W DARJEELING PATH AP O L L O A V E DA N B U R Y A V E 131ST CT SH A N N O N P K W Y 154TH CT W A M B E R F I E L D S B L V D AN S T O N A V E CONNEMARA T R 13 6T H ST W CRESTONE PATH 148TH ST W AMBER FIELDS BLVD A T W A T E R W AY AYREFIELD C I R BURGUNDY A VE 140TH ST W COUCHTOWN PA T H Ha r m o n y Vil l a s A T R I U M A V E AK R O N A V E ( C R 7 3 ) AU D R E Y A V E 149TH ST W B O X W OODPATH BR OCKWAY AVE BENT LE Y W AY BR O N Z E C T CA N A D A A V E 145TH ST W 136th ST W ROSE C OMMON WAY D A L L A S A V E 1 35 T H ST W DA L L A R A A V E W 136THCTW BONAIRE PATH W SH A N N O N P K W Y CICERO N E P A T H CARDINAL ST W BR O O K S I D E P A T H S H ANNON PKWY 158TH ST W ACORN AVE CORLISS BIRDSONG PATH CROCUSCT AL D E R W A Y 154TH ST W CH R Y S L E R A V E BAYBER R Y C T BELFAS T S T W L 147TH CT W ALMA AV E CLAR E D O W N S W A Y APPLEWOOD CT 130TH ST W PAT H 15 5 T H CT BR O O K P A T H 146TH ST W 138TH S T E DAN E A V E BU R N L E Y W A Y 132ND ST W DRUMCL I F F E 160TH ST W (CSAH 46) CLOV E R L N TR DA N B U R Y A V E W CH E R R Y P A T H DODD B L V D A T W O O D A V E A NNACOTTE LN AR C H D A L E L N DE L F T A V E W C ROM W E L L A V E DAYTONA W A Y DI A M O N D P A T H ( C S A H 3 3 ) CA N T A T A A V E W LOWER 143RD ST E DE L T A P L D R U M C L I FFE WAY CRYS T A L C T 144TH ST W BU N R A T T Y A V E AN D E R S O N D R DAVENPORT AVE BIR C H S T W LOWER 138TH ST W ADD I S O N CT C O R N E L L TRAIL AR T A I N E T R L COACHFO R D A V E 144TH ST E DANUBE L N 131st ST CIRCLE AVE B A Y UPPER 143RD ST W BO L I V I A A V E W AN G U S A V E A N M EADLE ROW UPPER 144 T H S T W 158TH CT W CA M F I E L D C I R UPP ER 14 3 R D S T E AB B E Y F I E L D A V E DERRYMOO R C T AM I E N S C I R AUTU M N W O O D T R L CL A R E T A V E CA RLINGFORD LANE 131ST ST W CR E S T O N E CI R CR E S T V I E W A V E UPPER 148TH ST W CRE S C E N T C I R CH I A N T I A V E C A R R OUSELWAY BL A N C A C T BR IC K PAT H CH O K E C H E R R Y A V E SH A N N O N P K W Y BI S C A Y N E A V E DAPHNELN AL L I N G H A M A V E ADDISON AVE CO U C H T O W N 152ND ST W DAN B U R Y W A Y W 134TH ST W B L O O M F I E L D CI R 142ND ST E CIM A RRON CT 140TH ST W BRI C K P A T H BR O O K V I E W PA T H DAFFOD I L P A T H CRUS H E E N C T CARLIN GFORD LANE E V ERMOOR PKWY CR E S T O N E C T BU R M A A V E CAR R A C H A V E CH I L I A V E CHERRY P A T H CO L U M B A R Y C I R BE L M O N T T R BRASS P K W Y ARDEE PL CR O M P T O NCT C R O S S C L I F F E P L 156TH ST W 144THSTW BELMONT TR CA R D I N A L C I R ANNAG A IRE CURV BLOOMFI E L D P A T H A L M A C I R CR E S T O N E A V E DAYBREAK AVE CA N A D A A V E UPPER 148TH ST W AUBURN AVE 141ST ST E C R O S S L O U G H T R L CA F F R E Y A V E CIMARRON AVE BU S I N E S S P K Y C O B A L T AV E ALTOMONTE WAY AK R O N A V E BA R D O N A V E D E L T A A V E DA N U B E C T C R O L L Y C T UPPER 149TH ST W BELVIDERE CT A B E R C O R N A V E C O N N E M ARA T R A R R O W H E A D W A Y CO R M O R A N T AT W A T E R P A T H AT RIU M A V E CONNEMARA TR UPPER 143RD CT E DAVENPORT PAT H DE L L W O O D CT 137TH CT W TR A MIENS AV E 139TH ST W C R O S S C R O FT P L C R Y S T A L P A T H BROC K W A Y A V E CORNELL TRL W CI M A R R O N A V E W AUTUMN W O O D W A Y AD ALYN AVE KAYL E M O R E C T AHENA CURVE A T W OOD CT DANUBECIR CROCUSAVE CH I P P E N D A L E A V E CHARLSTON WAY 158TH ST W WA Y SH A N N O N P K W Y C O A C H F ORD AVE 147TH ST W CROSSGLEN PATH S R O B E R T TRL (STH 3) 149TH ST W DAWSO N P L 149 T H S T W 146TH ST W BAYBERRY CIR 157TH ST W 148TH ST W B L U E B E R R Y C T AILESBURY AVE 142ND CT E DER R Y 155TH ST E DERBY CIR BI T T E R S W E E T C T BRO N Z E P K W Y DE W B E R R Y CT A STER BLVD AS H F O R D P A T H DANVILLE AVE W B E L L E C T AT W O O D A V E 30 31 28 6 12 1 11 8 40 35 29 37 23 36 14 4 17 42 32 25 26 20 19 15 22 16 9 24 2 10 21 27 18 5 13 7 33 41 34 39 38 3 Manganese Testing 2025 Stops Suggested Route Sequence Name 1 2470 Birch St W 2 13010 Bacardi Ave (Well 16) 3 13012 AYRFIELD CT 4 13202 Aulden Ave 5 1201 Bonaire Path E 6 14019 Addison Ct 7 1268 138th St E 8 1671 144th St E 9 14860 Akron Ave 10 1546 149Th St W 11 14191 Ailesbury Ave 12 13595 Athena Way 13 13610 Autumn Path (Well 15) 14 13581 Azalea Ave (Well 14) 15 13660 Bronze Pkwy (Brockway Park) 16 14115 Brazil Ave 17 14455 Brazil Ave 18 15210 Boulder Ave (Well 12) 19 15191 Boulder Ct 20 15641 Canada Cir 21 15623 Shannon Pkwy (Well 8) 22 4241 156th St W 23 15425 Shannon Pkwy 24 15260 Shannon Pkwy (Well 9) 25 3860 150th St W 26 15026 Cimarron Ave 27 14950 Chippendale Ave (Well 7) 28 3625 Upper 148th St W 29 14976 Canada Ave 30 3410 Lower 147th St W 31 3559 143rd St W 32 3335 142nd St W 33 3409 COUCHTOWN PATH 34 3462 CRUMFIELD PATH 35 13919 Copper Ct 36 14700 Shannon Pkwy 37 14099 Dane Ave 38 13815 DANBURY CT 39 13466 DANUBE LN 40 13403 Danube Ln 41 13166 DANUBE LN 42 13501 Shannon Pkwy F Path: C:\Users\mdh\OneDrive - ci.rosemount.mn.us\GIS Projects\Water Utility - Manganese Testing\2024\Manganese.aprx Page 10 of 199 Sequence Location Property Type Water Softener Filtered Source Sample Date City Analysis Result mg/L City Analysis Result ug/L MVTL Analysis Result mg/L MVTL Analysis Result ug/L Water Hardness Test Sample Date City Analysis Result mg/L City Analysis Result ug/L MVTL Analysis Result mg/L MVTL Analysis Result ug/L Water Hardness Test 1 14455 Brazil Ave Central Park No Slop sink 2/5/2025 0.040 40.0 0.015 15.0 15 5/5/2025 0.057 57.0 0.036 36.0 25 2 14115 Brazil Ave Erickson Park No Slop sink 0.0 5/5/2025 0.086 86.0 0.057 57.0 15 3 3335 142nd Street W Rosemount High School No Slop Sink 2/5/2025 0.036 36.0 0.006 6.0 15 5/5/2025 0.061 61.0 0.045 45.0 15 4 13660 Bronze Pkwy Brockway Park No Drinking Fountain 0.0 5/5/2025 0.056 56.0 0.030 30.0 18 5 2470 Birch Street W Residence No Hose bib 2/5/2025 0.078 78.0 0.039 39.0 15 5/5/2025 0.185 185.0 0.109 109.0 15 6 13581 Azalea Ave (Well 14) Well No Pre Treatment 2/5/2025 0.135 135.0 0.117 117.0 20 5/6/2025 0.176 176.0 0.149 149.0 20 7 14191 Ailesbury Ave Residence No Hose bib 0.0 8 13595 Athena Way Residence No Hose bib 2/5/2025 0.003 3.0 0.006 6.0 0 5/5/2025 0.043 43.0 0.017 17.0 20 9 13610 Autumn Path (Well 15) Well No Pre Treatment 2/5/2025 0.104 104.0 0.079 79.0 20 5/6/2025 0.100 100.0 0.071 71.0 25 10 13010 Bacardi Ave (Well 16) Well No Pre Treatment 2/5/2025 0.116 116.0 0.090 90.0 18 5/6/2025 0.114 114.0 0.071 71.0 25 11 13202 Aulden Ave Horseshoe Park No Drinking Fountain 0.0 5/5/2025 0.051 51.0 0.042 42.0 18.0 12 1201 Bonaire Path E Flint Hills No Drinking Fountain 0.0 13 14019 Addison Court Residence No Hose bib 2/5/2025 0.054 54.0 0.037 37.0 17 5/5/2025 0.046 46.0 0.035 35.0 15 14 1268 138th Street E Greystone Park No Drinking Fountain 0.0 5/5/2025 0.047 47.0 0.018 18.0 20 15 1671 144th Street E Residence Yes Hose bib 0.0 5/5/2025 0.010 10.0 <.005 n/a 1 16 14860 Akron Ave U More Park No Drinking Fountain 0.0 5/5/2025 0.347 347.0 0.320 320.0 18 17 1546 149th Street W Residence No Hose bib 0.0 18 15210 Boulder Ave (Well 12) Well No Pre Treatment 2/5/2025 0.236 236.0 0.125 125.0 18 5/6/2025 0.118 118.0 0.087 87.0 25 19 15191 Boulder Court On Time Plumbing Yes Slop sink 2/5/2025 0.006 6.0 0.008 8.0 18 5/5/2025 0.006 6.0 <.005 n/a 2 20 15641 Canada Circle CA Gear Yes Sink with softner 2/5/2025 0.000 0.0 <.005 n/a 2 5/5/2025 0.000 0.0 <.005 n/a 0 21 15623 Shannon Pkwy (Well 8) Well No Pre Treatment 2/5/2025 0.185 185.0 0.149 149.0 20 5/6/2025 0.189 189.0 0.154 154.0 25 22 4241 156th Street W Residence No Hose bib 0.0 5/5/2025 0.063 63.0 0.066 66.0 16 23 15425 Shannon Pkwy Jaycee Park No Slop sink 2/5/2025 0.139 139.0 0.112 112.0 20 5/5/2025 0.148 148.0 0.117 117.0 25 24 15260 Shannon Pkwy (Well 9) Well No Pre Treatment 2/5/2025 0.100 100.0 0.070 70.0 18 5/6/2025 0.093 93.0 0.082 82.0 25 25 3860 150th Street W Chuck and Don's No Slop sink 2/5/2025 0.071 71.0 0.055 55.0 18 5/5/2025 0.070 70.0 0.051 51.0 20 26 15026 Cimarron Ave Goodyear No Slop sink 2/5/2025 0.046 46.0 0.031 31.0 18 5/5/2025 0.075 75.0 0.058 58.0 25 27 14950 Chippendale Ave (Well 7) Well No Pre Treatment 2/5/2025 0.158 158.0 0.123 123.0 20 5/6/2025 0.361 361.0 0.251 251.0 25 28 3625 Upper 148th Street W Residence No Hose bib 2/5/2025 0.011 11.0 0.009 9.0 2 29 14976 Canada Ave Residence No Hose bib 2/5/2025 0.055 55.0 0.030 30.0 18 5/5/2025 0.067 67.0 0.080 80.0 25 30 3410 Lower 147th Street W Residence No Hose bib 0.0 5/5/2025 0.058 58.0 0.045 45.0 25 31 3559 143rd Street W Residence No Hose bib 2/5/2025 0.051 51.0 0.013 13.0 18 5/5/2025 0.127 127.0 0.027 27.0 25 32 14700 Shannon Pkwy Fire Station # 1 No Slop sink 2/5/2025 0.081 81.0 0.046 46.0 20 5/5/2025 0.067 67.0 0.040 40.0 20 33 14099 Dane Ave Residence No Hose bib 2/5/2025 0.079 79.0 0.018 18.0 18 5/5/2025 0.063 63.0 0.035 35.0 25 34 13919 Copper Court Residence No Hose bib 0.0 35 13403 Danube Lane Residence No Hose bib 0.0 5/5/2025 0.045 45.0 0.021 21.0 25 36 13501 Shannon Pkwy Shannon Park Elementary No Slop sink 2/5/2025 0.041 41.0 0.007 7.0 20 5/5/2025 0.033 33.0 0.007 7.0 25 37 3462 Crumfield Path Residence No Hose bib 0.0 5/5/2025 0.055 55.0 0.189 189.0 25 38 13466 Danube Lane Residence No Kitchen Sink 0.0 39 3409 Couchtown Path Residence No Kitchen Sink 0.0 40 13815 Danbury Court Residence Yes Hose bib 3/17/2025 0.009 9.0 0.006 6.0 2 5/5/2025 0.004 4.0 <.005 n/a 0 41 13166 Dunabe Lane Residence No Hose bib 3/17/2025 0.043 43.0 0.014 14.0 25 5/5/20225 0.035 35.0 0.017 17.0 25 42 13012 Ayrfield Court Residence No Kitchen Sink 3/17/2025 0.027 27.0 25 43 13815 Danbury Court Residence Hose bib 3/17/2025 0.009 9.00 2 Q2 2025 WATER SAMPLING OF MANGANESE LEVELS Q1 2025 Page 11 of 199 0 50 100 150 200 250 300 350 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 Re a d i n g i n M i c r o g r a m s / l i t e r ( u g / l ) Location ID City of Rosemount Manganese Sampling Readings MVTL Analysis -Q1 & Q2 2025 Q1 2025 MVTL Result Q2 2025 MVTL Result Advisory Limit Page 12 of 199 Date Well 7 (kGal) Well 8 (kGal) Well 9 (kGal) Well 12 (kGal) Well 14 (kGal) Well 15 (kGal) Well 16 (kGal) Rural Well P1-North Rural Well P2-South 2/3/2025 0 0 666 0 0 871 0 0 233 2/4/2025 4 19 548 13 14 715 32 63 144 2/5/2025 0 0 661 0 0 864 0 156 0 2/6/2025 0 0 643 0 0 839 0 0 164 2/7/2025 0 0 599 0 0 783 0 156 0 3/15/2025 0 0 642 0 0 0 731 0 35 3/16/2025 0 0 768 0 0 0 872 0 124 3/17/2025 0 0 648 0 0 0 738 227 0 3/18/2025 0 0 629 0 0 0 716 0 228 3/19/2025 0 0 636 0 0 0 723 192 0 Date Well 7 (kGal) Well 8 (kGal) Well 9 (kGal) Well 12 (kGal) Well 14 (kGal) Well 15 (kGal) Well 16 (kGal) Rural Well P1-North Rural Well P2-South 5/3/2025 0 0 1145 949 0 0 0 95 120 5/4/2025 0 0 1287 1079 0 0 337 107 0 5/5/2025 0 0 1328 1119 0 0 783 123 134 5/6/2025 21 6 1331 1120 3 1075 962 34 108 5/7/2025 0 0 1355 1142 263 564 844 36 43 5/8/2025 0 107 1344 1132 220 913 1073 43 52 Q2 2025 Sample Dates 5/5 - 5/6/2025 Samples from Utility Commissioners' and Concil Members' Residences Q1 2025 Sampe Dates 2/5 - 2/7/2025 & 3/15 - 3/19/2025 Page 13 of 199 Chuck Jacobus Rosemount, City of 2875 145th Street W Rosemount, MN 55068-4997 Certificate of Analysis Workorder:Water Testing (77682) Approval All data reported has been reviewed and approved by: Dave Smahel, Chemistry Production Director New Ulm, MN Analyses performed under Minnesota Department of Health Accreditation conforms to the current TNI standards. NEW ULM LAB CERTIFICATIONS: MN LAB # 027-015-125 ND WW/DW # R-040 BISMARCK LAB CERTIFICATIONS: MN LAB # 038-999-267 ND W/DW # ND-016 SD SDWA Workorder Comments All analytes with dilution factors greater than 1 (displayed in DF column) required dilution due to matrix or high concentration of target analyte unless otherwise noted and reporting limits (RDL column) have been adjusted accordingly. Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 1 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 14 of 199 Analytical Results Lab ID:77682001 Sample ID:5 2470 Birch St Date Collected:02/04/2025 15:40 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682001 Method: EPA 200.7 Manganese 0.039 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:22 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 2 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 15 of 199 Analytical Results Lab ID:77682002 Sample ID:28 3625 Upper 148th St Date Collected:02/04/2025 12:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682002 Method: EPA 200.7 Manganese 0.009 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:23 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 3 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 16 of 199 Analytical Results Lab ID:77682003 Sample ID:13 14019 Addison Ct Date Collected:02/05/2025 05:45 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682003 Method: EPA 200.7 Manganese 0.037 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:25 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 4 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 17 of 199 Analytical Results Lab ID:77682004 Sample ID:33 14099 Dane Ave Date Collected:02/05/2025 11:40 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682004 Method: EPA 200.7 Manganese 0.018 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:26 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 5 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 18 of 199 Analytical Results Lab ID:77682005 Sample ID:8 13595 Athena Way Date Collected:02/05/2025 11:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682005 Method: EPA 200.7 Manganese 0.006 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:27 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 6 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 19 of 199 Analytical Results Lab ID:77682006 Sample ID:6 13581 Azalea Ave Date Collected:02/05/2025 07:45 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682006 Method: EPA 200.7 Manganese 0.117 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:29 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 7 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 20 of 199 Analytical Results Lab ID:77682007 Sample ID:27 14950 Chippendale Date Collected:02/05/2025 08:20 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682007 Method: EPA 200.7 Manganese 0.123 mg/L 0.005 1 02/11/2025 13:24 02/11/2025 14:17 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 8 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 21 of 199 Analytical Results Lab ID:77682008 Sample ID:21 15623 Shannon Pkwy Date Collected:02/05/2025 08:10 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682008 Method: EPA 200.7 Manganese 0.149 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:30 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 9 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 22 of 199 Analytical Results Lab ID:77682009 Sample ID:9 13610 Autumn Path Date Collected:02/05/2025 09:20 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682009 Method: EPA 200.7 Manganese 0.079 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:31 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 10 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 23 of 199 Analytical Results Lab ID:77682010 Sample ID:18 15210 Boulder Ave Date Collected:02/05/2025 08:40 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682010 Method: EPA 200.7 Manganese 0.125 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:48 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 11 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 24 of 199 Analytical Results Lab ID:77682011 Sample ID:24 15260 Shannon Pkwy Date Collected:02/05/2025 08:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682011 Method: EPA 200.7 Manganese 0.070 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:49 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 12 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 25 of 199 Analytical Results Lab ID:77682012 Sample ID:10 13010 Bacardi Ave Date Collected:02/04/2025 09:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682012 Method: EPA 200.7 Manganese 0.090 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:50 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 13 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 26 of 199 Analytical Results Lab ID:77682013 Sample ID:29 14976 Canada Ave Date Collected:02/04/2025 07:35 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682013 Method: EPA 200.7 Manganese 0.030 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:51 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 14 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 27 of 199 Analytical Results Lab ID:77682014 Sample ID:31 3559 143rd St. W. Date Collected:02/03/2025 11:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682014 Method: EPA 200.7 Manganese 0.013 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:53 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 15 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 28 of 199 Analytical Results Lab ID:77682015 Sample ID:3 3335 142nd St. W. Date Collected:02/03/2025 09:00 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682015 Method: EPA 200.7 Manganese 0.006 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:54 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 16 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 29 of 199 Analytical Results Lab ID:77682016 Sample ID:1 14455 Brazil Ave Date Collected:02/03/2025 09:54 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682016 Method: EPA 200.7 Manganese 0.015 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:56 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 17 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 30 of 199 Analytical Results Lab ID:77682017 Sample ID:26 15026 Cimarron Ave Date Collected:02/03/2025 10:10 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682017 Method: EPA 200.7 Manganese 0.031 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:57 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 18 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 31 of 199 Analytical Results Lab ID:77682018 Sample ID:25 3860 150th St. W Date Collected:02/03/2025 10:18 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682018 Method: EPA 200.7 Manganese 0.055 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 10:58 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 19 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 32 of 199 Analytical Results Lab ID:77682019 Sample ID:19 15191 Boulder Ct Date Collected:02/03/2025 09:01 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682019 Method: EPA 200.7 Manganese 0.008 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 11:00 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 20 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 33 of 199 Analytical Results Lab ID:77682020 Sample ID:20 15641 Canada Cir Date Collected:02/03/2025 09:15 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682020 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 11:16 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 21 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 34 of 199 Analytical Results Lab ID:77682021 Sample ID:32 14700 Shannon Pkwy Date Collected:02/03/2025 08:43 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682021 Method: EPA 200.7 Manganese 0.046 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 11:18 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 22 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 35 of 199 Analytical Results Lab ID:77682022 Sample ID:23 15425 Shannon Pkwy Date Collected:02/03/2025 09:34 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682022 Method: EPA 200.7 Manganese 0.112 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 11:19 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 23 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 36 of 199 Analytical Results Lab ID:77682023 Sample ID:36 13501 Shannon Pkwy Date Collected:02/03/2025 10:56 Date Received:02/05/2025 13:20 Matrix:Potable Water YesReceived on Ice:2.1Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 77682023 Method: EPA 200.7 Manganese 0.007 mg/L 0.005 1 02/10/2025 08:37 02/10/2025 11:21 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Tuesday, February 11, 2025 4:42:53 PM Page 24 of 31 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 37 of 199 Analytical Results Lab ID:80783001 Sample ID:1 13815 Danbury Court Date Collected:03/17/2025 08:25 Date Received:03/17/2025 14:08 Matrix:Potable Water YesReceived on Ice:3.8Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 80783001 Method: EPA 200.7 Manganese 0.006 mg/L 0.005 1 03/19/2025 12:17 03/19/2025 14:39 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: sulfuric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Wednesday, March 19, 2025 3:53:29 PM Page 2 of 6 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 38 of 199 Analytical Results Lab ID:80783002 Sample ID:2 13166 Danube Lane Date Collected:03/17/2025 09:05 Date Received:03/17/2025 14:08 Matrix:Potable Water YesReceived on Ice:3.8Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 80783002 Method: EPA 200.7 Manganese 0.014 mg/L 0.005 1 03/19/2025 12:17 03/19/2025 14:44 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: sulfuric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Wednesday, March 19, 2025 3:53:29 PM Page 3 of 6 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 39 of 199 Analytical Results Lab ID:80783003 Sample ID:3 13012 Ayrfield Court Date Collected:03/17/2025 08:45 Date Received:03/17/2025 14:08 Matrix:Potable Water YesReceived on Ice:3.8Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 80783003 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 03/19/2025 12:17 03/19/2025 14:46 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: sulfuric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Wednesday, March 19, 2025 3:53:29 PM Page 4 of 6 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 40 of 199 Chuck Jacobus Rosemount, City of 2875 145th Street W Rosemount, MN 55068-4997 Certificate of Analysis Workorder:Manganese (85882) Approval All data reported has been reviewed and approved by: Dave Smahel, Chemistry Production Director New Ulm, MN Analyses performed under Minnesota Department of Health Accreditation conforms to the current TNI standards. NEW ULM LAB CERTIFICATIONS: MN LAB # 027-015-125 ND WW/DW # R-040 BISMARCK LAB CERTIFICATIONS: MN LAB # 038-999-267 ND W/DW # ND-016 SD SDWA Workorder Comments All analytes with dilution factors greater than 1 (displayed in DF column) required dilution due to matrix or high concentration of target analyte unless otherwise noted and reporting limits (RDL column) have been adjusted accordingly. Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 1 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 41 of 199 Analytical Results Lab ID:85882001 Sample ID:1 Date Collected:05/05/2025 08:40 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882001 Method: EPA 200.7 Manganese 0.036 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 09:39 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 2 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 42 of 199 Analytical Results Lab ID:85882002 Sample ID:2 Date Collected:05/05/2025 09:00 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882002 Method: EPA 200.7 Manganese 0.057 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 09:40 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 3 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 43 of 199 Analytical Results Lab ID:85882003 Sample ID:3 Date Collected:05/05/2025 09:15 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882003 Method: EPA 200.7 Manganese 0.045 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 09:42 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 4 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 44 of 199 Analytical Results Lab ID:85882004 Sample ID:4 Date Collected:05/05/2025 09:30 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882004 Method: EPA 200.7 Manganese 0.030 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 09:43 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 5 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 45 of 199 Analytical Results Lab ID:85882005 Sample ID:5 Date Collected:05/05/2025 09:00 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882005 Method: EPA 200.7 Manganese 0.109 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 09:59 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 6 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 46 of 199 Analytical Results Lab ID:85882006 Sample ID:6 Date Collected:05/06/2025 08:45 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882006 Method: EPA 200.7 Manganese 0.149 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:00 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 7 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 47 of 199 Analytical Results Lab ID:85882007 Sample ID:8 Date Collected:05/05/2025 11:15 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882007 Method: EPA 200.7 Manganese 0.017 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:01 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 8 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 48 of 199 Analytical Results Lab ID:85882008 Sample ID:9 Date Collected:05/06/2025 07:40 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882008 Method: EPA 200.7 Manganese 0.071 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:02 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 9 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 49 of 199 Analytical Results Lab ID:85882009 Sample ID:10 Date Collected:05/06/2025 08:30 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882009 Method: EPA 200.7 Manganese 0.071 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:03 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 10 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 50 of 199 Analytical Results Lab ID:85882010 Sample ID:11 Date Collected:05/05/2025 09:45 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882010 Method: EPA 200.7 Manganese 0.042 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:05 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 11 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 51 of 199 Analytical Results Lab ID:85882011 Sample ID:13 Date Collected:05/05/2025 09:55 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882011 Method: EPA 200.7 Manganese 0.035 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:06 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 12 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 52 of 199 Analytical Results Lab ID:85882012 Sample ID:14 Date Collected:05/05/2025 10:05 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882012 Method: EPA 200.7 Manganese 0.018 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:07 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 13 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 53 of 199 Analytical Results Lab ID:85882013 Sample ID:15 Date Collected:05/05/2025 10:20 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882013 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:08 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 14 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 54 of 199 Analytical Results Lab ID:85882014 Sample ID:16 Date Collected:05/05/2025 10:45 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882014 Method: EPA 200.7 Manganese 0.320 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:10 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 15 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 55 of 199 Analytical Results Lab ID:85882015 Sample ID:18 Date Collected:05/06/2025 07:50 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882015 Method: EPA 200.7 Manganese 0.087 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:26 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 16 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 56 of 199 Analytical Results Lab ID:85882016 Sample ID:19 Date Collected:05/05/2025 09:20 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882016 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:27 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 17 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 57 of 199 Analytical Results Lab ID:85882017 Sample ID:20 Date Collected:05/05/2025 09:35 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882017 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:28 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 18 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 58 of 199 Analytical Results Lab ID:85882018 Sample ID:21 Date Collected:05/06/2025 07:25 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882018 Method: EPA 200.7 Manganese 0.154 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:30 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 19 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 59 of 199 Analytical Results Lab ID:85882019 Sample ID:22 Date Collected:05/05/2025 11:00 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882019 Method: EPA 200.7 Manganese 0.066 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:31 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 20 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 60 of 199 Analytical Results Lab ID:85882020 Sample ID:23 Date Collected:05/05/2025 09:50 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882020 Method: EPA 200.7 Manganese 0.117 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:32 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 21 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 61 of 199 Analytical Results Lab ID:85882021 Sample ID:24 Date Collected:05/06/2025 08:20 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882021 Method: EPA 200.7 Manganese 0.082 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:33 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 22 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 62 of 199 Analytical Results Lab ID:85882022 Sample ID:25 Date Collected:05/05/2025 10:00 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882022 Method: EPA 200.7 Manganese 0.051 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:34 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 23 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 63 of 199 Analytical Results Lab ID:85882023 Sample ID:26 Date Collected:05/05/2025 10:11 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882023 Method: EPA 200.7 Manganese 0.058 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:35 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 24 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 64 of 199 Analytical Results Lab ID:85882024 Sample ID:27 Date Collected:05/06/2025 13:30 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882024 Method: EPA 200.7 Manganese 0.251 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:36 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 25 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 65 of 199 Analytical Results Lab ID:85882025 Sample ID:29 Date Collected:05/05/2025 10:19 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882025 Method: EPA 200.7 Manganese 0.080 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:52 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 26 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 66 of 199 Analytical Results Lab ID:85882026 Sample ID:30 Date Collected:05/05/2025 09:50 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882026 Method: EPA 200.7 Manganese 0.045 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:53 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 27 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 67 of 199 Analytical Results Lab ID:85882027 Sample ID:31 Date Collected:05/05/2025 09:40 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882027 Method: EPA 200.7 Manganese 0.027 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:54 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 28 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 68 of 199 Analytical Results Lab ID:85882028 Sample ID:32 Date Collected:05/05/2025 08:55 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882028 Method: EPA 200.7 Manganese 0.040 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:56 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 29 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 69 of 199 Analytical Results Lab ID:85882029 Sample ID:33 Date Collected:05/05/2025 10:30 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882029 Method: EPA 200.7 Manganese 0.035 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:57 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 30 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 70 of 199 Analytical Results Lab ID:85882030 Sample ID:35 Date Collected:05/05/2025 10:38 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882030 Method: EPA 200.7 Manganese 0.021 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:58 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 31 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 71 of 199 Analytical Results Lab ID:85882031 Sample ID:36 Date Collected:05/05/2025 10:48 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882031 Method: EPA 200.7 Manganese 0.007 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 10:59 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 32 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 72 of 199 Analytical Results Lab ID:85882032 Sample ID:37 Date Collected:05/05/2025 10:57 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882032 Method: EPA 200.7 Manganese 0.189 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 11:00 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 33 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 73 of 199 Analytical Results Lab ID:85882033 Sample ID:40 Date Collected:05/05/2025 10:40 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882033 Method: EPA 200.7 Manganese <0.005 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 11:01 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 34 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 74 of 199 Analytical Results Lab ID:85882034 Sample ID:41 Date Collected:05/05/2025 11:10 Date Received:05/07/2025 13:37 Matrix:Potable Water YesReceived on Ice:3.7Temp @ Receipt (C): Parameter Results Units RDL DF Prepared Analyzed Qual 85882034 Method: EPA 200.7 Manganese 0.017 mg/L 0.005 1 05/12/2025 09:14 05/12/2025 11:03 Sample Comments This sample was either unpreserved or needed additional preservation upon receipt at the laboratory. The following preservation was added by MVTL: nitric acid Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 35 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 75 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 36 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 76 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 37 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 77 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 38 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 78 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 39 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 79 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 40 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 80 of 199 Client: MINNESOTA VALLEY TESTING LABORATORIES, INC. 1126 North Front St. ~ New Ulm, MN 56073 ~ 800-782-3557 ~ Fax 507-359-2890 2616 East Broadway Ave. ~ Bismarck, ND 58501 ~ 800-279-6885 ~ Fax 701-258-9724 1201 Lincoln Hwy. ~ Nevada, IA 50201 ~ 515-382-5486 ~ Fax 515-382-3885 www.MVTL.com Rosemount, City OfAccount #:18024 Monday, May 12, 2025 3:41:20 PM Page 41 of 41 MVTL guarantees the accuracy of the analysis done on the sample submitted for testing. It is not possible for MVTL to guarantee that a test result obtained on a particular sample will be the same on any other sample unless all conditions affecting the sample are the same, including sampling by MVTL. As a mutual protection to clients, the public and ourselves, all reports are submitted as the confidential property of clients, and authorization for publication of statements, conclusions or extracts from or regarding our reports is reserved pending our written approval. Report Date: Page 81 of 199 EXECUTIVE SUMMARY Utility Commission Regular Meeting: June 23, 2025 AGENDA ITEM: 2024 Rosemount Surface Water Quality Monitoring Program Report AGENDA SECTION: NEW BUSINESS PREPARED BY: Jane Byron, Stormwater Specialist AGENDA NO. 7.a. ATTACHMENTS: 2024 Rosemount Surface Water Monitoring Report APPROVED BY: NE RECOMMENDED ACTION: Discussion BACKGROUND The City of Rosemount (City) has been monitoring water quality and water levels in select ponds since 2009 to provide the city with data it uses to help guide stormwater water management activities. The City has monitored the following ponds for the last several years, including in 2024: Drainage Area Information Monitoring Activities Monitoring Location Basin Surface Area Drainage Area Percent (%) Impervious Water Level Apr-Oct Water Quality Snow-melt Sampling Location 1 – Marcotte 1408 1.90 27.4 17% X X X Location 2 – Glendalough 1486 1.39 142.8 25% X X Location 3 – Trailer Park 1589 0.87 37.2 37% X X Location 4 – Unnamed 1687 0.55 58.8 25% X X Location 5 – Cat 1716 0.55 169.2 30% X X X Location 6 – Erickson 578 2.26 166.2 39% X X X Location 7 – Bloomfield 1864 0.79 37.3 35% X X X Location 8 – O’Leary’s 600 5.56 125.5 43% X X Location 9 – Wachter 2443 5.1 384.8 41% X X X Location 10 – Shannon 614 3.17 176.8 36% X X Location 11 – Greystone 02321 0.58 25.1 45% X Birger Pond X Basins are monitored for total suspended solids (TSS), total phosphorus (TP), ortho-phosphate (OP), chloride, and nitrogen (new in 2022). Water levels are used to evaluate level fluctuations, runoff volumes, and infiltration rates. Here are some key takeaways from the report: • Water level monitoring shows Wachter Pond is consistently exceeding its management elevation Page 82 of 199 by several feet, and Shannon Pond has had an increasing trend over the last 10 years and frequently exceeds its management elevation. • Water levels at Bloomfield Pond, Shannon Pond, and Wachter Pond have remained stable and not dropped despite four years of drought. • Basins with higher estimated runoff volumes have tended to be those with higher impervious surface coverage or that receive large amounts of flow from upstream basins. • Estimated city-wide infiltration rates have exceeded the estimated infiltration rate from the 2009 Non-Degradation Report, but have shown a decreasing trend until 2023 and 2024. • The city-wide long-term median TSS shows overall effective treatment in monitored basins. • The city-wide long-term median TP is within the anticipated range for treated stormwater. • OP on average has been 18 percent of the TP that was observed, which is much lower than the expected range when the source is plant litter and lawns. • There has been an increasing trend in chloride concentrations since 2014. • Select city ponds have periodically exceeded the chronic or acute chloride standard; Erickson Pond was the only pond to exceed the chloride chronic standard in 2024. • Nitrate concentrations are well below the proposed chronic nitrate standard for Class 2B waters. It should be noted, growing season monitoring for Birger Pond in Innisfree Park is not contained in this report. Birger Pond is monitored by a citizen volunteer as part of the MetCouncil Community-Assisted Monitoring Program (CAMP). RECOMMENDATION Discuss the 2024 Surface Water Quality Monitoring Program Report. Page 83 of 199 WATER QUALITY MONITORING PROGRAM CITY OF ROSEMOUNT ROSEMOUNT, MN March 18, 2025 Prepared for: City of Rosemount 2875 145th Street West Rosemount, MN 55068 WSB PROJECT NO. R-025921 Page 84 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291-000 TABLE OF CONTENTS 1. Executive Summary ............................................................................................................................... 1 2. Introduction ............................................................................................................................................ 3 3. Procedures and Methodology ................................................................................................................ 4 3.1. Water Level Monitoring ................................................................................................................. 4 3.2. Water Quality Sampling ................................................................................................................ 5 4. Results ................................................................................................................................................... 6 4.1. Water Level Monitoring ................................................................................................................. 6 4.2. Rainfall to Runoff Calculations ...................................................................................................... 9 4.3. Infiltration Rate ............................................................................................................................ 11 4.4. Water Quality Results ................................................................................................................. 11 5. Conclusions and Observations ............................................................................................................ 19 6. References ........................................................................................................................................... 20 ATTACHMENTS Attachment A – Pond Monitoring Location and Drainage Area Maps (2003) Attachment B – 2024 Water Level Tables and Charts B.1 2024 Water Levels B.2 2024 Rainfall to Runoff Tables and Charts B.3 2024 Evaporation & Infiltration Tables Attachment C – Water Quality C.1 Long-Term Water Quality Tables C.2 Long-Term Water Quality Box and Whisker Charts C.3 Chloride and Nitrate Charts Page 85 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291-000 Page 1 1. EXECUTIVE SUMMARY The City of Rosemount (City) has implemented a water quality monitoring program since 2009 that provides the city with empirical data that can be used to help guide stormwater water management activities. The City has monitored between 10-12 basins annually for water quality parameters including total suspended solids (TSS), total phosphorus (TP), orthophosphate (OP), chloride, and nitrogen (new in 2022). Water levels are also monitored to evaluate level fluctuation, runoff volumes, and infiltration rates. This report provides a summary of the results of data collection activities from 2014-2024. The monitoring data is used to fulfill multiple MS4 program requirements in minimum control measures (MCMs) 5 and 6 related to inspection, long-term operation, and maintenance of infiltration Best Management Practices (BMPs). The water level data is used to observe fluctuations in basin levels, especially landlocked basins, to protect adjacent structures from flooding risks. Observed infiltration rates were compared to infiltration results outlined in the City’s Non-Degradation Report. Runoff ratios for the individual basins are calculated using localized rainfall data and level data and were evaluated against impervious surface percentages and land use types. Water quality is utilized to determine if basins are meeting anticipated pollutant removal efficiencies for total suspended solids and total phosphorus. Additionally, snowmelt sampling is conducted to assess winter pollutant concentrations associated with snowmelt runoff. Data collection activities were conducted from May through October each year, with snowmelt sampling occurring during the winter. Basins that are monitored for level are equipped with an electronic monitoring device that records continuously. Event-based rainfall is also monitored at several locations within the City to provide localized rainfall totals. Water quality samples are collected as grab samples monthly. A summary of the notable findings from the monitoring activities include: Water Level Monitoring  Landlocked basins Location 9 (Watcher) and Location 10 (Shannon) have shown a significant increasing trend in minimum, maximum, and average water levels in past years monitoring, but saw lower levels starting in 2021 and continuing through 2023. That trend was reversed in 2024, with the minimum, maximum, and average water levels increasing at both locations. Management activities at those sites should be evaluated to ensure adequate storage capacity and acceptable water levels at those sites.  The long-term City-wide Rainfall to Runoff (R/R) ratio was 0.21, which indicates that, on average 21 percent of rainfall ends up as runoff within the city.  Infiltration monitoring has shown a 9-year average infiltration rate of 0.063 inches per hour (in/hr) City-wide. The 2024 infiltration rate of 0.095 in/hr was above the 9-year average. Water Quality Monitoring 2024 monitoring season saw low amounts of rain and similar concentrations of pollutants at all locations, except for chlorides, which was higher at all locations. TSS  The long-term median concentration for TSS City-wide was 12 milligrams per liter (mg/L). The long term median TSS concentration ranged from 6 mg/L at Location 1 (Marcotte) to 34 mg/L at Location 10. TP  The long-term median TP City wide was 0.14 mg/L which is lower than the anticipated range for treated stormwater of 0.15 to 0.2 mg/L. Page 86 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291-000 Page 2 OP  OP was noticeably greater at Location 6 than the other monitored basins, with a long-term median 0.091 mg/L. The next highest is Location 3 (Trailer Park Pond) with a long-term median of 0.050 mg/L. The drainage area to that basin includes a large area of open park space as well as drainage from a splashpad. Chloride  2024 snowmelt sampling saw only Location 6 to exceed the 4-day chronic chloride standard (230 mg/L). In 2023, Location 6 snow melt sampling exceeded the maximum standard of 860 mg/L  No other locations exceeded the 4-day chronic standard in 2024.  Locations 6 and 9 contain areas of commercial and/or downtown land uses within their drainage areas, which is typically associated with higher salt use in the winter. This is reflected in the elevated chloride concentrations observed within the basins. Nitrate  Nitrate monitoring was new for 2022.  Nitrate levels were very low throughout 2024.  The highest nitrate concentration was 0.244 mg/L at Location 9 in February. The MPCA proposed chronic nitrate concentrations for Class 2B waters are 8 mg/L. Page 87 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291-000 Page 3 2. INTRODUCTION The water quality monitoring program for the City of Rosemount (City) includes seasonal water data collection at select stormwater basins in the City. The data is used to fulfill multiple MS4 program requirements in minimum control measures (MCMs) 5 and 6 related to inspection, long-term operation, and maintenance of infiltration Best Management Practices (BMPs). The water quality monitoring program provides the City with empirical data that can be used for the following purposes:  Guide Watershed and City Stormwater Plan Updates and discussions with observed runoff volumes and infiltration and evaporation rates.  Identify potential areas to receive regional volume reduction credit through stormwater reuse applications.  Validate pond treatment efficiencies from the SWAMP program with sampled Total Suspended Solids and Total Phosphorus concentrations.  Supporting conclusions in the City’s Non-Degradation Study with observed infiltration and evaporation data.  Creating a baseline for discharge volumes and pollutant loading assumptions of possible future Total Maximum Daily Loads (TMDLs) in the Vermillion River and Mississippi River.  Assessing winter pollutant concentration associated with snowmelt runoff. Water level and water quality data were collected as part of this monitoring program to analyze basin performance and watershed characteristics. Water level and precipitation data was used to calculate runoff volumes for various storm events and to develop a relationship between rainfall and runoff for the drainage area. Water level data is utilized to generate infiltration and evaporation rates during periods of no rainfall. To evaluate these parameters, electronic monitoring equipment was used to continuously measure system water levels and rainfall amounts. The ponds selected for monitoring are summarized in Table 2.1 below which also includes a description of basin and drainage area characteristics. In Table 2.1, Birger Pond was only monitored for snowmelt samples and has had water quality data collected by the Citizen-Assisted Monitoring Program (CAMP). The pond location maps are provided in Attachment A and include the drainage area and land use information. Table 2.1: Pond Monitoring Locations Monitoring Location Drainage Area Information Monitoring Activities Basin Surface Area Drainage Area Percent (%) Impervious Water Level Apr-Oct Water Quality Snow-melt Sampling Location 1 – Marcotte 1408 1.90 27.4 17% X X X Location 2 – Glendalough 1486 1.39 142.8 25% X X Location 3 – Trailer Park 1589 0.87 37.2 37% X X Location 4 – Unnamed 1687 0.55 58.8 25% X X Location 5 – Cat 1716 0.55 169.2 30% X X X Location 6 – Erickson 578 2.26 166.2 39% X X X Location 7 – Bloomfield 1864 0.79 37.3 35% X X X Location 8 – O’Leary’s 600 5.56 125.5 43% X X Location 9 – Wachter 2443 5.1 384.8 41% X X X Location 10 – Shannon 614 3.17 176.8 36% X X Location 11 – Greystone 02321 0.58 25.1 45% X Birger Pond X 1 – Newly constructed basin added to the Monitoring Program in 2016. Page 88 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 0252921 Page 4 3. PROCEDURES AND METHODOLOGY This section outlines the procedures and methods followed to perform monitoring and data analysis. 3.1. Water Level Monitoring Pond level monitoring was completed using automatic level loggers that record water surface elevation at an interval of one reading per hour. During equipment installation at the beginning of each monitoring season, a reference elevation is collected to convert monitored water depth into water surface elevation. Monthly data retrievals and equipment maintenance are completed in conjunction with water quality sampling activities. Image 3.1: Level Monitoring Configuration The water level data is utilized to calculate rainfall to runoff (R/R) ratio for each rainfall event. A R/R ratio represents the proportion of rainfall that is not infiltrated or evaporated and thus ends up as runoff. The purpose of calculating an R/R ratio is to establish a relationship that can be used to estimate runoff for a drainage area. The data can be used to calibrate stormwater models, compare runoff produced by different drainage areas, and to analyze changes in runoff volume over time for a specific basin. A R/R ratio is calculated by estimating the volume received by the basin from the change in water level over the pond surface area. The volume is then converted to inches of runoff per acre of contributing watershed area. The annually calculated R/R ratio is the linear regression of the event-based R/R calculations for each year. The water level data is also utilized to calculate infiltration and evaporation rates for the monitored basins. This data can be used to calculate actual volume infiltrated, and the trend data can be used to help identify basins in need of maintenance. The infiltration rates are calculated by change in water level over time, when water levels are below outlet elevations (basin is not discharging). The rates that are calculated include infiltration and evaporation. Page 89 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 0252921 Page 5 3.2. Water Quality Sampling Water quality samples were collected as grab samples from Locations 1-10 monthly, approximately May through October of 2024. Winter snow melt sampling was also completed at basins 1, 5, 6, 7, 9, and Birger Pond. The samples were targeted for the mid-water column, to be representative of concentrations within the basin. Snow-melt sampling followed the general procedures outlined in the MPCA Guidance (MPCA, 2020). The samples were collected using an extension rod sampler which was rinsed three times before collection. The samples were then transferred into laboratory provided containers with the appropriate preservative, placed in a cooler on ice, and delivered to Tri-City Laboratory in Bloomington, MN. The samples were analyzed for the parameters listed in Table 3.1 below. CAMP data collected on Birger Pond was collected by volunteers at two-week intervals from April through mid-october. Water Quality samples were collected over the deepest spot on Birger Pond, along with temperature and Secchi disk measurements. Table 3.1: Water Quality Parameters Monitoring Parameters Total Suspended Solids Total Phosphorus Orthophosphate Chloride Nitrogen Page 90 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 6 4. RESULTS 4.1. Water Level Monitoring Stormwater runoff from areas within the City of Rosemount is directed to various lakes, ponds, or depressions within the city, many of which are landlocked. Location 6, Location 7, Location 9, and Location 10 are basins that are closely monitored because in addition to localized runoff, these basins also receive discharge from upstream stormwater features, which makes them susceptible to significant water level increases during major events. The City has outlined specific management elevations and activities at these sites to ensure adequate capacity is maintained to effectively store and treat stormwater runoff. Image 4.1: Water Level Monitoring (Location 6) The water level data that has been collected was evaluated against the management elevations that were established for each of the basins. 2024 water level charts with hourly rainfall data are included in Attachment B. Table 4.1 below includes a summary of the minimum and maximum water elevations that have been observed over the 2024 monitoring season at each site, as well as applicable management elevations and outlet details. Page 91 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 7 Table 4.1: Water Level Summary Basin Details 2024 Maximum and Minimum Levels Pond # Basin ID NWL HWL Outlet Details Minimum Water Elevation (ft amsl)) Date Maximum Water Elevation (ft amsl) Date Loc #1 1408 905.5 910.67 Lift -E 907.62 6/1/24 909.45 6/23/24 Loc #2 1486 926 935.3 Lift -E 924.17 10/24/24 926.47 8/30/24 Loc #3 1589 928 940.68 Lift -P 925.24 10/23/24 929.47 7/31/24 Loc #4 1687 929.7 940.3 RCP-E 927.02 10/24/24 931.45 8/29/24 Loc #5 1716 916 923.8 RCP-E 915.24 10/24/24 918.06 8/29/24 Loc #6 578 923 933.73 Lift-P 918.73 10/23/24 920.95 8/29/24 Loc #7 1864 909 913.89 RCP-P1 907.72 10/24/24 909.97 8/29/24 Loc #8 600 929.7 935.04 RCP-E 929.46 10/15/24 931.23 8/29/24 Loc #9 2443 906 926.65 Lift-P 913.08 10/24/24 917.98 8/30/24 Loc #10 614 914 920.22 Lift P 919.40 6/15/24 921.33 9/20/24 Loc #11 1710 918.5 923 RCP-P 912.26 6/12/24 916.40 8/29/24 The water elevation range over the 2024 monitoring period at Location 6 was 2.22 feet and Location 7 was 2.25 feet. There has been no indication of an increasing trend in either average or maximum levels at those locations. Based on the monitoring data collected to date, these basins have been observed to provide adequate storage and infiltration of the runoff that has been conveyed. Location 6 receives discharge from an adjacent splash pad during summer months. On average, 10.7 million gallons per year have been discharged from the splash pad and infiltrated by the basin. The daily level increase and subsequent decrease because of the splash pad discharge in 2024 was approximately 0.19 feet. Long term water trends for Location 7 are shown in Chart 4.1. Chart 4.1 Location 9 levels have consistently exceeded its management elevation of 910 feet amsl. The average water level in 2024 was 915.1 feet amsl and was consistent with the average water level for 2020. The average, minimum, and maximum levels in 2024 changed from 2023. In 2024, the average water level Page 92 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 8 increased from 913.5 in 2023 to 915.1 in 2024. This increase is also represented in the maximum and minimum water levels for the pond compared to 2023. The water level in pond 9 is the highest since 2018 when the average water level reached 915.3 ft. Long-term trends for Location 9 are presented in Chart 4.2. Chart 4.2 Location 10 has shown an increasing trend in the minimum, maximum, and average water levels since 2014, although 2021 through 2023 had a decrease in levels from previous years. This decrease could be due to lower-than-average precipitation for the last three monitoring seasons. The average, minimum, and maximum levels for 2024 increased from 2023. Location 10 long-term trends are presented on Chart 4.3 below. Chart 4.3 The average, minimum, and maximum water level at Location 10 increased in 2024. Location 9 reached the required level of 916 ft for 504 total hours. The level at Location 10 was above the 920-management required level for a total of 2,931 hours. These sites have consistently been above management levels Page 93 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 9 and should be evaluated for alternative management strategies that aim to restore the capacity of the basin. 4.2. Rainfall to Runoff Calculations R/R ratios, also known as runoff coefficients, were calculated for each basin in 2024 and the results are presented in tables and charts in Attachment B. During the 2018 Surface Water Management Plan (SWMP) update, the drainage areas for the basins were reevaluated. As a result, the R/R ratios were recalculated for the previous years (2014-2017), with the updated drainage information. The annual R/R ratios provided below are based off the linear regression of individual R/R events (Chart 3.4). The long- term average R/R ratios are presented on Table 4.2, below. Table 4.2: R/R Ratio Summary Pond Information Percent (%) Impervious Long Term Average R/R Ratio 2014 R/R Ratio 2015 R/R Ratio 2016 R/R Ratio 2017 R/R Ratio 2018 R/R Ratio 2019 R/R Ratio 2020 R/R Ratio 2021 R/R Ratio 2022 R/R Ratio 2023 R/R Ratio 2024 R/R Ratio Pond # Basin ID Loc #1 1408 17 0.31 0.19 0.28 0.49 0.44 0.32 0.39 0.20 0.20 0.24 0.36 0.41 Loc #2 1486 25 0.08 0.12 0.08 0.08 0.09 0.08 0.08 0.08 0.05 0.03 0.07 0.05 Loc #3 1589 37 0.41 0.37 0.38 0.37 0.44 0.37 0.47 0.35 0.47 0.51 0.40 0.29 Loc #4 1687 25 0.13 0.18 0.12 0.12 0.08 0.13 0.11 0.10 0.14 0.16 0.13 0.12 Loc #5 1716 30 0.17 0.20 0.18 0.15 0.14 0.15 0.16 0.18 0.17 0.18 0.14 0.13 Loc #6 578 39 0.15 0.18 0.14 0.23 0.20 0.12 0.15 0.11 0.11 0.10 0.10 0.17 Loc #7 1864 35 0.20 0.20 0.23 0.15 0.30 0.15 0.19 0.20 0.18 0.18 0.14 0.14 Loc #8 600 43 0.32 0.33 0.38 0.28 0.32 0.33 0.34 0.35 0.25 0.32 0.30 0.28 Loc #9 2443 41 0.19 0.15 0.19 0.19 0.23 0.21 0.17 0.21 0.17 0.18 0.18 0.16 Loc #10 614 36 0.19 0.21 0.25 0.26 0.18 0.22 0.12 0.13 0.11 0.19 0.13 0.10 Loc # 11 1710 45 0.20 NM NM 0.19 0.32 0.12 0.17 0.13 0.23 0.25 0.23 0.23 City-Wide Average 34% 0.21 0.21 0.22 0.23 0.25 0.20 0.21 0.19 0.19 0.21 0.20 0.19 Great est R/R Ratio Least R/R Ratio A larger R/R ratio is indicative of less storage and infiltration within a drainage area, and consequently, a greater proportion of runoff being produced. Drainage areas that have a larger percentage of impervious surface will typically exhibit a higher R/R ratio. Event-based R/R ratios can vary greatly depending on rainfall intensity and the antecedent soil moisture. The City-wide R/R ratio has not varied much over the years ranging from 0.19 in 2024 to 0.25 in 2017, with the long-term average being 0.21. Of the monitored basins, Location 3 has consistently exhibited one of the greatest R/R ratios since 2014, which has shown that on average, 41 percent of the rainfall within that drainage area ends up as runoff. The Location 3 drainage area consists of 37 percent impervious Page 94 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 10 surface which is slightly above the average of the monitored basins (34 percent). The predominate land use at Location 3 is low density residential (98 percent), with the remaining area designated as open park space. Other basins that have shown higher R/R ratios include Location 1 and Location 8 having a long-term R/R ratio of 0.41 and 0.32, respectively. The drainage area for Location 1 consists of 17 percent impervious surfaces, which is the lowest percentage of the monitored basins. The higher R/R can be attributed to variability in upstream runoff contributions from basins that discharge to Location 1 that are not within the immediate drainage area. Location 8 consists of 43 percent impervious surfaces, includes drainage from a significant portion of commercial land use along 150th St. SW (CSAH 42). Location 8 had the second highest R/R ratio in 2024. Location 2 (1486) has produced the lowest R/R ratio almost every year monitored with a long-term average of 0.08. The Location 2 drainage area is 25 percent impervious, which is the 2nd lowest of the basins monitored. The predominate land uses include Transitional Residential (67 percent) and Rural Residential (31 percent). The long-term rainfall to runoff ratios can be seen in Chart 4.4 below. Chart 4.4: Long Term R/R Ratio Page 95 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 11 4.3. Infiltration Rate The water level data was utilized to generate an infiltration and evaporation rate for the basins when water levels were below outlet and pump elevations. The 2024 infiltration rates are presented in the tables included as Attachment B. A long-term summary of the average infiltration rates is provided in Table 4.4 below. The infiltration rates were evaluated against the estimated rates identified in the City’s Non-Degradation Report that was completed in 2007. The rates described below are inclusive of both infiltration and evaporation. Table 4.4: Infiltration Rate Summary Infiltration monitoring has shown a long-term average infiltration rate of 0.060 in/hr. City-wide. Annually, infiltration rates have ranged from 0.200 in 2024 to 0.007 in 2022. The City’s Non-Degradation Report utilized an average infiltration rate of 0.030 in/hr. This was developed by taking the average infiltration rates that were identified for type D soils during a literature review. As shown above, the City-wide average infiltration rate has exceeded the City’s Non-Degradation Report rate every year that monitoring has been conducted. In 2024, Location 11 (1720) had the greatest infiltration rate at 0.200 in/hr. The greatest long term average infiltration rate of 0.127 in/hr occurred at Location 3. Location 8 had the lowest infiltration rate in 2024 and continues to have the lowest long term average infiltration rate at 0.020 in/hr. At Location 8, accumulation of sediment and vegetation growth near the pond outlet has increased the elevation needed for the pond to discharge from an elevation of 929.70’ to 930.05’. 4.4. Water Quality Results The water quality data collected to-date is provided for each monitoring location in the Tables and Charts included as Attachment C. Water quality sampling has consisted of growing season sampling, roughly April – October. Appropriate data collected has been added to the long-term calculations. The long-term median growing season concentration (excluding snow melt samples) for each of the evaluated parameters is presented in Table 4.5 and the 2024 growing season average concentrations in Table 4.6 below. Pond Information Long Term Avg Infil. Rate (in/hr) 2014 Avg Infil. Rate (in/hr) 2015 Avg Infil. Rate (in/hr) 2016 Avg Infil. Rate (in/hr) 2017 Avg Infil. Rate (in/hr) 2018 Avg Infil. Rate (in/hr) 2019 Avg Infil. Rate (in/hr) 2020 Avg Infil. Rate (in/hr) 2021 Avg Infil. Rate (in/hr) 2022 Avg Infil. Rate (in/hr) 2023 Avg Infil. Rate (in/hr) 2024 Avg Infil. Rate (in/hr) Pond # Basin ID Loc #1 1408 0.021 0.009 0.020 0.027 0.024 0.024 0.016 0.025 0.020 0.024 0.022 0.019 Loc #2 1486 0.034 0.049 0.038 0.042 0.040 0.039 0.035 0.033 0.022 0.007 0.025 0.047 Loc #3 1589 0.127 0.149 0.116 0.158 0.180 0.138 0.133 0.111 0.089 0.070 0.094 0.184 Loc #4 1687 0.062 0.093 0.073 0.066 0.022 0.054 0.091 0.053 0.064 0.039 0.083 0.114 Loc #5 1716 0.051 0.070 0.068 0.031 0.037 0.043 0.057 0.085 0.041 0.027 0.064 0.080 Loc #6 578 0.082 0.082 0.163 0.104 0.074 0.044 0.013 0.010 0.096 0.153 0.111 0.189 Loc #7 1864 0.032 0.046 0.049 0.020 0.034 0.027 0.039 0.030 0.024 0.021 0.055 0.059 Loc #8 600 0.020 0.052 0.054 0.014 0.008 0.023 0.013 0.009 0.014 0.016 0.040 0.013 Loc #9 2443 0.075 0.071 0.103 0.106 0.093 0.089 0.081 0.067 0.033 0.034 0.061 0.101 Loc #10 614 0.060 0.072 0.085 0.081 0.063 0.074 0.049 0.053 0.031 0.030 0.027 0.043 Loc # 11 1710 0.086 NM NM 0.131 0.074 0.073 0.110 0.082 0.071 0.064 0.148 0.200 City-Wide Average 0.062 0.069 0.077 0.071 0.059 0.057 0.058 0.051 0.046 0.044 0.066 0.095 Greatest Rate Lowest Rate Page 96 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 12 Table 4.5: Long Term Median Pollutant Concentrations (mg/L) Pond # Basin ID TSS Total Phosphorus Ortho- Phosphate Chloride Loc #1 1408 6 0.11 0.020 34.1 Loc #2 1486 11 0.11 0.010 24.9 Loc #3 1589 7 0.17 0.050 14.1 Loc #4 1687 8 0.07 0.010 36.1 Loc #5 1716 11 0.11 0.010 30.5 Loc #6 578 11 0.22 0.091 20.0 Loc #7 1864 13 0.18 0.026 15.0 Loc #8 600 15 0.16 0.013 49.3 Loc #9 2443 10 0.11 0.010 77.2 Loc #10 614 34 0.22 0.010 40.2 Birger Pond1 9 0.12 0.020 47.5 Long Term City-Wide Average Median 12 0.14 0.024 35.6 Greatest Concentration Least Concentration 1 – Growing season water quality sampling was completed in 2014 and then CAMP data in 2022 (Birger only) Table 4.6: 2024 Average Pollutant Concentrations (mg/L) Pond # Basin ID Total Phosphorus Ortho- Phosphate TSS Chloride Nitrate Loc #1 1408 0.08 0.036 7 14.3 0.025 Loc #2 1486 0.11 0.004 15 14.5 0.025 Loc #3 1589 0.14 0.048 21 20.1 0.034 Loc #4 1687 0.07 0.005 9 11.5 0.029 Loc #5 1716 0.12 0.006 22 21.1 0.034 Loc #6 578 0.20 0.096 38 99.6 0.031 Loc #7 1864 0.13 0.016 21 22.9 0.043 Loc #8 600 0.20 0.006 39 21.8 0.025 Loc #9 2443 0.08 0.018 9 47.1 0.092 Loc #10 614 0.15 0.008 34 26.6 0.025 2024 City-Wide Average 0.13 0.024 21 29.9 0.036 Greatest Concentration Least Concentration Page 97 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 13 The findings of the water quality sampling are summarized within this section by pollutants. The results are presented in box and whisker plots which provide a visual representation of the sample distribution and show important statistical data. A summary of the metrics presented on the box and whisker plots is shown on Image 4.2. Individual data points that lie outside of the minimum and maximum values are outliers. Image 4.2 – Box and Whisker Plot Legend Total Suspended Solids Sources of TSS in stormwater include deteriorated pavement, vehicle exhaust emissions, vehicle parts, building and construction material, road salt, road paint and pedestrian debris, soil material, plant and leaf litter, and atmospheric deposition of particles. Suspended solids transported into rivers and lakes eventually settle on the bottom, and over time this accumulated sediment can clog and alter the topography of bodies of water. City-wide, the TSS long term median is 12 mg/L, which is unchanged from the previous year’s long-term median. Median TSS values range from 6 mg/L at Location 1 to 34 mg/L at Location 10. The greatest variability in TSS concentrations have been seen at Location 7, Location 8 and Location 10, as demonstrated by larger inter quartile ranges (IQR), depicted as the “box” on Chart 4.5 below. The IQR reflects the middle 50 percent of the data collected at that site. Location 1 (6 mg/L) and Location 3 (7 mg/L) have the lowest long-term median TSS and are comprised of predominately low density residential and commercial land uses. Location 10, with the greatest long-term median TSS concentration, consists of predominantly low-density residential land use. The City’s Non-Degradation Study presented an estimated event mean concentrations for TSS based on land uses, which were derived from a review of applicable research documents. These concentrations included 50 mg/L for open space, 140 mg/L for single family residential, and 215 mg/L for agricultural land uses. Basins built to NURP design standards are anticipated to provide TSS treatment efficiencies of 85 percent. The City-wide TSS median of 12 mg/L shows that overall, the monitored basins have provided effective TSS treatment. Page 98 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 14 Chart 4.5 – Total Suspended Solids 2024 Total Suspended Solids In 2024, the City-wide TSS average concentration was 21 mg/L and had a range from 7 mg/L at Location 1 to 39 mg/L at Location 8. 2024 TSS values were higher than 2023 which had a city wide average TSS concentration of 12 mg/L. Total Phosphorus Sources of phosphorus in urban runoff include plant and leaf litter, soil particles, pet waste, road salt, fertilizer, and atmospheric deposition of particles. Lawns and roads account for the greatest loading, which has shown to contribute about 80 percent of total and dissolved phosphorus (Waschbusch et. al 1999). Phosphorus has a direct effect on plants and algal growth in lakes and is one of the leading causes of deteriorating lake water quality. City-wide, the average TP long term median is 0.14 mg/L, ranging from 0.07 mg/L at Location 4 (1687) to 0.22 mg/L at Location 10 and Location 6. Additionally, Location 5 and 4 have the smallest IQR, which indicates that the sample concentrations were closer to the median, with less overall variability. The greatest variability in TP concentrations was seen at Location 7. Chart 4.6 shows the long-term TP averages and variability. Typical concentrations of TP for untreated stormwater are 0.22 mg/L for commercial purposes, 0.30 mg/L for residential, and 0.32 for cropland land uses. Basins built to NURP design standards are anticipated to provide TP treatment efficiencies of approximately 60 percent. The City-wide average median of 0.14 mg/L TP is within the anticipated range for treated stormwater (<0.20 mg/L). Page 99 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 15 Chart 4.6 – Total Phosphorus 2024 Total Phosphorous During the 2024 growing season, the City-wide TP average concentration was 0.13 mg/L, which is down from 0.15 mg/L in 2023. Location 6 and 8 had the highest average concentrations of TP at 0.20 mg/L and location 4 had the lowest concentration of TP at 0.07 mg/L. Ortho-Phosphate Orthophosphate is the dissolved component of total phosphorus that is readily available for algal production. Dissolved phosphorus typically accounts for about 45 percent of total phosphorus but can exceed 50 percent when the source is plant litter and lawns, and as low as 25 percent when the source is predominantly sediment (Waschbusch et. al, 1999). City-wide, the OP long term average median is 0.024 mg/L, ranging from 0.010 mg/L at Location 2, Location 4, Location 5, Location 9, and Location 10 to 0.091 mg/L at Location 6. Location 6, with the greatest observed OP, receives water from a splash pad and contains open park space within a significant portion of its drainage area. For all monitoring locations OP on average, has been 18 percent of the TP that was observed which is much lower than the expected range when source is plant litter and lawns. Chart 4.7 shows the long-term OP averages and variability. Page 100 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 16 Chart 4.7 – Ortho-Phosphate 2024 Ortho-Phosphate During the growing season of 2024, the City-wide OP average concentration was 0.024 mg/L, which is equal to the long-term average. Many locations saw lower values in OP 2024 compared to 2023. Location 1 was the only location that had a higher concentration of OP at 0.036 mg/L in 2024 compared to 0.013mg/L in 2023. Chloride Chloride is a key component of road salt, which is soluble and highly mobile in water. When snow and ice melt, the salt that has been applied to icy roads, parking lots, and sidewalks is conveyed with it into surface water and groundwater. Elevated chloride levels can affect our drinking water supplies and can be toxic to aquatic organisms. The chloride water quality standard for 2B lakes is a 4-day average of 230 mg/L for chronic toxicity and 860 mg/L as the maximum standard toxicity. These standards are used for Public Waters which include Location 9 and Birger. The other monitoring locations are only provided for comparative purposes. Chloride sampling was implemented City-wide in 2016, with snowmelt sampling being conducted at select basins in 2016 and then again from 2018 through 2024. The chloride results are plotted on Chart 4.8 below. Additionally, chloride charts for the individual basins are included as Attachment C. Page 101 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 17 Chart 4.8 – Chloride Concentrations Location 6 exhibits significant snowmelt concentrations for chlorides, but those concentrations readily decreased over the summer months. Location 6 drainage area contains parking lots and pathways that may contribute to its higher concentration levels during winter/spring. This was the case in 2024, Location 6 snowmelt samples were above the chronic standard, but decreased over the summer months. Location 6 was the only pond do exceed the chronic standard in 2024. Location 8 has shown snowmelt and spring routine samples that have exceeded the chronic standard but were below the chronic standard throughout the entirety of the monitoring season. In addition to elevated snowmelt chloride levels, Location 9 has the greatest growing season chloride concentrations of all the basins. One notable observation is that Location 9 chloride levels decreased throughout the growing season, which hasn’t been case in previous years. The increase in these concentrations in the fall could indicate that the basin is stratified over the summer. Locations 6, 8, and 9 all contain areas of commercial and/or downtown land use within their drainage areas, which are typically associated with higher salt use in the winter. This is reflected in the elevated chloride concentrations observed within the basins. Location 6 and Location 9 are both landlocked, which results in pollutants being concentrated within those basins and not discharged downstream. The remaining monitoring locations have not had an exceedance of chloride water quality standards during routine sampling and have not shown any notable increasing trends with respect to chloride levels. 2024 Chloride During 2024, the City-wide growing season chloride average concentration was 29.9 mg/L, which is less than the long-term average of 56.1 mg/L. Location 6 had the highest average chloride concentration at 99.6 mg/L. Location 1 had an average of 46.3 mg/L. Most locations saw consistent chloride levels throughout the year. Page 102 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 18 Nitrate Nitrogen is a nutrient that is necessary for plant and algae growth. Most nitrate (a form of nitrogen) in Minnesota waters comes from agriculture practices while only one percent is estimated to come from urban stormwater (MPCA 2013). At increased levels, nitrates can be detrimental to aquatic life, cause algal blooms, and possibly dangerous to human health. In 2022, the MPCA proposed nitrate criteria to protect aquatic life. The proposed chronic 4-day standard for Class 2B lakes is 8 mg/L. Nitrate monitoring was new to the City’s monitoring program in 2022. 2024 Nitrate During the 2024 growing season, the City-wide nitrate average concentration was 0.036 mg/L. Location 9 had the highest average level of nitrate at 0.092 mg/L, which is far below the proposed standard of 8 mg/L. Long term nitrate sampling results are plotted on Chart 4.9 below. Chart 4.9 – 2024 Nitrate Concentrations Page 103 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025291 Page 19 5. CONCLUSIONS AND OBSERVATIONS Eleven basins were monitored for water level and water quality to provide the City with empirical data that can be used to help guide stormwater management activities. A summary of the notable findings from the monitoring activities are provided below: Water Level Monitoring  Landlocked basins Location 9 and Location 10 have shown a significant increasing trend in minimum, maximum, and average water levels over the long-term monitoring period, but saw lower levels in 2021 through 2023 due to low precipitation totals (drought conditions). Despite drought in September and October 2024, minimum, maximum and average water levels increased from 2023.  Even with four years of drought, the average water level at Locations 7, 9 and 10 has remained stable and not dropped significantly since 2021. Management activities at those sites should be evaluated to ensure adequate storage capacity and acceptable water levels at those sites.  The long-term City-wide R/R ratio was 0.21. This remains consistent from the previous year.  Long term R/R ratios varied by site from 0.40 at Location 1 to 0.05 at Location 2. Those sites consisted of 37 percent and 25 percent impervious surfaces, respectively.  Infiltration monitoring has shown a long-term average infiltration rate of 0.063 in/hr City-wide. Since 2015, infiltration rates have consistently decreased, until 2023 (0.066 in/hr) and 2024 (0.095 in/hr). Water Quality Monitoring In general, higher stormwater pollutant levels were observed at Location 6, Location 9, and Location 10. This is largely due to these basins being landlocked and pollutants staying concentrated within the basin and are not transported downstream. TSS: The long-term average median concentration for TSS City-wide was 12 mg/L. The long-term median TSS concentration ranged from 6 mg/L at Location 1 to 34 mg/L at Location 10. TP: The long-term average median concentration for TP City wide was 0.14 mg/L which is slightly below the anticipated range for treated stormwater of 0.15 to 0.20 mg/L. The long-term median TP concentration ranged from 0.07 mg/L at Location 4 to 0.22 mg/L at Location 6 and 10. OP: The long-term OP was noticeably greater at Location 6 than the other monitored basins. In 2024, Location 6 has the highest long-term median of OP, 0.091 mg/L. Chloride:  Locations 6 and 9 contain areas of commercial and/or downtown land use within their drainage areas, which is typically associated with higher salt use in the winter. Location 6 tends to see high levels during winter sampling, while Location 9 has the highest long term median chloride levels at 77.2 mg/L. Location 9 is a landlocked basin that may be contributing to the elevated chloride levels throughout the monitoring season.  There has been an increasing trend in chloride concentrations since monitoring began in 2014 Nitrate:  Nitrate monitoring was new in 2022. The MPCA proposed chronic nitrate concentrations for Class 2B waters are 8 mg/L.  Nitrate levels were very low throughout the year, with the last sampling of the year having the highest levels overall. The highest nitrate concentration was 0.034 mg/L at Location 3. Page 104 of 199 Rosemount Water Quality Monitoring Program – 2022 City of Rosemount, MN WSB Project No. 021143-000 Page 20 6. REFERENCES Carlson, R.E. and J. Simpson. 1996. A Coordinator’s Guide to Volunteer Lake Monitoring Methods. North American Lake Management Society. https://www.nalms.org/secchidipin/monitoring- methods/trophic-state-equations/. Accessed 15 Feb. 2023. Minnesota Pollution Control Agency. 2015. Chloride Monitoring Guidance for Streams and Stormsewers. https://www.pca.state.mn.us/sites/default/files/wq-iw11-06v.pdf. Accessed 01 Nov. 2018. Minnesota Pollution Control Agency. 2005. Minnesota Lake Water Quality Assessment Report: Developing Nutrient Criteria. https://www.pca.state.mn.us/sites/default/files/lwq-a- nutrientcriteria.pdf . Accessed 04 Jan. 2021. Minnesota Pollution Control Agency. 2013. “Nitrogen in Minnesota Surface Waters.” https://www.pca.state.mn.us/sites/default/files/wq-s6-26a.pdf . Accessed 06 Dec. 2022. Waschbusch, R.J., W.R. Selbig, and R.T. Bannerman. 1999. Sources of Phosphorus in Stormwater and Street Dirt from Two Urban Residential Basins in Madison, Wisconsin, 1994–95. U.S. Geological Survey Water-Resources Investigations Report 99–4021. WSB. 2007. City of Rosemount Non-Degradation Study. Page 105 of 199 Rosemount Water Quality Monitoring Program – 2024 City of Rosemount, MN WSB Project No. 025921-000 Attachment A Attachment A – Pond Monitoring Location and Drainage Area Maps Page 106 of 199 ^_ PATH CRUSHEEN CT CROLLY P A T H D A N B U R Y W A Y W D R U M C L I F F E W A Y D R U M C L I F F E D R U M C L I F FE CT C R O L L Y C T CROOKHAVEN CT SHANNONPKWY SHANNON PKWY EVERMO O R P K W Y Location 12020 Evaporation & Infiltration Study ¯ ^_Monitoring Locations Subwatershed Land Use RR R ural Residential TR Tr ansitional Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_1_10.4.mxd 0 350Feet Location 1 2024 Evaporation & Infiltration Study Page 107 of 199 ^_ 131ST ST W 132 ND ST W C O U C H T O W N P A T H C R O M P TONCT C R O M W E L L A V E COL ESHIRE PAT H C O U C H T O W N A V E CORMACK C I R 137th ST W 136th ST W TRLCORLISS COUCHTOWN CORCORAN AVE CORCHMAN AVE COUCHFORD AVE C R U M FIE L D P A T H C O U C H T O W N C T C O U C H T O W N CT COACHFO R D A V E C O A C H F O R D W AY CARRACH AVE CONNEMARATR CROMPTON AVE CR O M W E L L T R CRO S S L O U G H T R C R U M P E T P A T H C A R R A C H A V E C A R B A C H W AY 134TH ST W C A R L I NGFORD LANE CARLIN G F ORD W A Y Location 22020 Evaporation & Infiltration Study ¯ ^_Monitoring Locations Subwatershed Monitoring Pond Land Use MD R Medium Density Residential RR R ural Residential TR Tr ansitional Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_2_10.4.mxd 0 400Feet Location 2 2024 Evaporation & Infiltration Study Page 108 of 199 ^_ 138T H ST W BUNRAT TY AVE UPPER 138 TH ST W BRIA NBORU A VE LOW E R 1 38TH ST W BUNDORAN AVE B U R G U N D Y A V E B R O U G H S H A N E A V E BLANC A CT BLARNEYCT B LANCA A V E 139TH ST W 140T H ST W BRE ME N AVE 140TH CIR B U R G U N D YWAY BURGUNDY CT 139T H ST W Location 32020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use PO Existing Parks/Open Space LDR Low Densit y Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_3_10.4.mxd 0 300Feet ¯Location 3 2024 Evaporation & Infiltration Study Page 109 of 199 ^_ 132ND CT W S RO BERT TRL (STH 3) S ROBERT TRL (STH 3) BISCAYNE AVE 131ST ST W BONAIRE PATH W 132ND ST W B E L F A S T S T W 142ND ST W 138TH ST W BU N R AT TY AVE UPPER 138TH ST W BRIA NBORU AVE B I R C H S T W LOWER 138TH ST W B E L M O N TCT BUNDORAN AVE B U R G U N D Y A V E B R O U G H S H A N E A V E BELM ONT TR BRASSPK W Y B R O N Z E C T BRASS PKW Y 1 3 6 T H S T W 1 3 3 R D S T WB R O C K W A Y A V E B R I L L I A N T G E M A V E 1 3 5 T H S T W BLANC A CT BLARNEYCT B LANCA A V E 139TH ST W COACHFO R D A V E CARRACH AVE CONNEMARATR CONNEMARA TR BR O N Z E P K WY C A R R A C H AVE 140TH ST W BREMEN AVE B R O C K W A Y AV E B R I C K P A T H B E L F A S T C T 140TH CIR B U R G UNDYWAY BURGUNDY CT BURMA AVE BURNLEY WAY C A R B A C H W AY 134TH ST W C A R L I NGFORD LANE CARLIN G F ORD W A Y BRICK PATH 139TH ST W Location 42020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use HDR High Density Residential MD R Medium Density Residential NC N eighborhood Commercial PI Public/Institutional PO Existing Parks/Open Space TR Tr ansitional Residential LDR Low Densit y Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_4_10.4.mxd 0 600Feet ¯Location 4 2024 Evaporation & Infiltration Study Page 110 of 199 ^_ AUDOBON W A Y A U G U STAWAYBISCAYNE AVE BACARDI AVE BONAIRE PATH W BONAIRE PATH W BIRCHWOOD AVE BLOOMFIELD PATH BELMONT TR B E L F A S T S T W 140TH ST BEECH ST W B I R C H S T W A U T U M N P A T H A Z A L E A A V E ATWOOD TRL ATWATER CT ATRIU M A V E BIRCH W OOD AVE BEN T L E Y W AY BAYBERRY C T BIRDSONG CT ATW A T E R P A T H AZALEA P A T H 138TH ST W A V A L O N PATH A U T UMNCT BANYAN LN ATRIU M AVE BA Y B E R R Y T R L 1 4 0 T H S T W 1 3 9 T H S T W A T W O O D A V E B E L M O N TCT AUTU M N W O O D T R L A V A NTIAVE A U T U M N W OODAV E BLOOMFIEL D C T B A Y B E R R Y C I R A T W A T E R W AY ATWOOD CIR BIRDSONG PATH A U T U M N W O O D C T A Z A L E A C T A U T U M N W O O D W A Y A U T U M N W O O D W A Y 136TH ST W ATHENA WAY ATHE N A CT ATWO O D A V E BELMONT TR B E L L E C T 142N D S T W C O N N E M A R A T R A U T U M N P A T H BIRCH ST W A U B U R N A V E BIRMINGHAMCT BELVIDERE CT 139TH ST W CONNEMARA TR 145TH ST W BLOOMFIELDPATH BIRNAMWOOD TR BELMONT TR B E L F A S T C T A U B U R N AVE 1 4 2 N D C T W A T W O O D C T AURORA AVE Location 52020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use MD R Medium Density Residential PI Public/Institutional PO Existing Parks/Open Space LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_5_10.4.mxd 0 800Feet ¯Location 5 2024 Evaporation & Infiltration Study Page 111 of 199 ^_ S ROBERT TRL (STH 3) S ROBERT TRL (STH 3) BRAZIL AVE 146TH ST W CAMEO AVE 148TH ST 142ND ST W CAMBRIAN AVE BURMA AVE CAMERO LN BO X W OODPATH UPPER 147TH ST W LOWER 147TH ST W BURNLEY AVE BOYSENBERRY CT CANTATA AVE W BUNDORAN AVE B L U E B E R R Y C T B R O U G H S HANEAVE B L A C K B E R R Y W A Y 143RD ST W CANADA AVE 148TH ST W PRIVATE RD 146TH ST W LOWER 147TH ST W BOSTON CIR BOISE CIR BLARNEYCT 145TH ST W 145TH ST W 140TH ST W BREMEN AVE 140TH CIR B U R G U N D YWAY BURGUNDY CT BURMA AVE BURNLEY WAY Location 62020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use BP Buisness Park DT Downtown HDR High Density Residential MD R Medium Density Residential PI Public/Institutional PO Existing Parks/Open Space LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_6_10.4.mxd 0 500Feet ¯Location 6 2024 Evaporation & Infiltration Study Page 112 of 199 ^_ AUTU M N W O O D T R L A V A NTIAVE BLOOMFIEL D C T B A Y B E R R Y C I R A T W A T E R W AY ATWO OD CIR A U T U M N W O O D W A Y A U T U M N W O O D W A Y 142N D S T W A U B URNAVE A U B U R N AVE 1 4 2 N D C T W A T W O O D C T Location 72020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_7_10.4.mxd 0 300Feet ¯Location 7 2024 Evaporation & Infiltration Study Page 113 of 199 ^_ 150TH ST W (CSAH 42) 153RD ST W 151ST ST W 155TH ST W DELFT AVE W D E C E M B E R T R L DALLARA AVE W DANVILLE AVE W DARLING PATH COVINGTON AVE DARJEELIN G P A T H COBAL T A V E COLORADO AVE CLARET AVE CRANDALL AVE DELMAR CT 154TH CT W D A M A S K C T DAMASK AVE W CRESTONE AVE DAHOMEY AVE W DANBURY AVE CRESTVIEW AVE 152ND CT W C O L U M B I A W A Y C O L U M B I A C T EVERLEIGH CIR EVERLEIGHCIR DERBY C I R C L A RET C I R 1 4 7 T H S T W CRES TONE CIR 151ST ST W D O D D B L V D UPPER 149TH ST W DANBURY AVE UPPER 150TH ST W 155TH ST W 147TH ST W DANVILLE A V E W C I M A R R O N A V E W 152ND ST W DANVILLE AVE W CLARET AVE UPPER 148TH ST W DECEMBER WAY C O L U M B A R Y C T DEC CT D A RT M O O R C T DEWBERRY CT DARJEELING CT 155TH CT COLUMBARY CIR DALLARA AVE W D AY BREAKAVE D A M A S K A V E S D O D D B L V D SHANNON PKWY SHANNON PKWY 154TH ST W 153RD ST W C R E S T V I E W C I R C I M ARRONAVEW COBALT LN DANBURY AVE W Location 82020 Evaporation & Infiltration Study ^_Monitoring Locations Monitoring Pond Subwatershed Land Use CC C ommunit y Commercial HDR High Density Residential MD R Medium Density Residential PO Existing Parks/Open Space LDR Low Densit y Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_8_10.4.mxd 0 500Feet ¯Location 8 2024 Evaporation & Infiltration Study Page 114 of 199 ^_ CHERRY PATH S ROBERT TRL (STH 3) 151ST ST W BRAZIL AVE 156TH ST W 144TH ST W 155TH ST W 147TH ST W 146TH ST W 143RD ST W COBBLER AVE CAMEO AVE 152ND ST W UP PER 143RD ST W CANADA AVE CORNELL TRL W 148TH ST W COVINGTON AVE CAMBRIAN AVE BURMA AVE C O B A L T A V E COLORADO AVE BUSINESS PKY CAMERO LN CLARET AVE CRANDALL AVE B O U L D E R A V E CIMARRON AVE W CHIANTI AVE C A R R OUSEL WAY UP PER 147TH ST W LOWER 147TH ST W CRESTONE AVE UPPER 148TH ST W 149TH ST W UPPER 1 4 9 T H S T W CRESTVIEW AVE C O L U M B I A W A Y LOWER 150TH ST W C H I LI C T C I M A R R O N A V E B U S IN E S S P K W Y BURNLEY AVE C H R O M E A V E C O L U M B I A C T CANTATA AVE W CH O R L E Y A V E W CAMFIELD CIR CHARLESTON AVE C I R C L E A V E C L A RET C I R 1 5 3 R D S T W 143RD ST W CANADA AVE 148TH ST W CHIPPENDALE AVE147TH S T W U P P E R 1 4 9TH ST W C I M A R R O N WAY C I M ARRON CT CRE STONE CIR 154TH ST W 149TH ST W 146TH ST W D O D D B L V D 144THSTW C IM A R R O N A V E W UP PER 149TH ST W PRIVATE RD C IM A R R O N A V E W 146TH ST W LOWER 147TH ST W CHILI AVE CLARET AVE PATH CHASEWOODCOURT C H E S T N U T WAY C I M M A R O N A V E C H E R R Y P A T H C O L U M B A R Y C T CORNELL CT S COLUMBARY CIR CHOKECHERRY AVE CHOKECHERRY AVE U. 149TH CT CHEVELLE CT N BRENNER CT C R O F T O N C T CRESCENT CIR C R ESTONEPAT H C O R N E L L T R A I L 1 56 TH S T W CO R N E L L CT N 145TH ST W 145TH ST W 145TH ST W 154TH ST W 153RD ST W C R E S T V I E W C I R C I M ARRONAVEW CORMORANT WAY 143RD ST W UPPER 1 43R D S T W 151ST ST W 144TH ST W CHIPPENDALE AVE CHIPPENDALE AVE CHIPPENDALE AVE 1 5 6 T H S T W 147TH ST W COBALT LN COBALT DRIVE S R O B E RT TRL(STH3) BO ULDE R CT CHRYSLER AVE Location 92020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use BP Buisness Park CC C ommunity Commercial DT Downtown HDR High Density Residential MD R Medium Density Residential NC N eighborhood Commercial PI Public/Institutional PO Existing Parks/Open Space RC R egional Commercial LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_9_10.4.mxd 0 825Feet ¯Location 9 2024 Evaporation & Infiltration Study Page 115 of 199 ^_ ^_ ^_ ^_ ^_ 153RD ST W 156TH ST W DIAMOND PATH (CSAH 33) 155TH ST W CRYSTAL P A T H 152ND ST W DARLING PATH CORNELL T RL W 158TH ST W DARJEELIN G P A TH UP P E R 1 56THSTW 154TH CT W CAR D I N A L S T W CASCADE PATH 158TH CT W 157TH CT W DAKOTA DR159TH CT W C I N N A M O N W AY 157TH ST W CROCUS AVE DANBURY AVE 152ND CT W C O L U M B I A W A Y C O L U M B I A C T CUMBERLAND AVE CIC ERONECT C I R C L E A V E CR O C U S C T C A R DINAL CT D A K O T A L N CICERONEPAT H C L A RET C I R C I M A R R O N WAY C I M A RRON C TCRESTONE CIR 154TH ST W 158TH ST W 151ST ST W 156TH ST W DANBURY AVE 155TH ST W DANVILLE A V E W 152ND ST W DANVILLEAVEW DANVILLE AVE W CLARET AVE CICERONE PATHCRESTONE CT CIMM A R O N A V E C O L U M B A R Y C T CORNELL CT S C R Y S T A L C T D A P P L E C I R DAPPLE CT CARDINAL CIR DEWBERRY CT DARJEELING CT 155TH CT COLUMBARY CIR CHOKECHERRY AVE CHOKECHERRY AVE C R ESTONEPAT H UPPER156THCT W C O R N E L L T R A I L 1 5 6T H S T W C O R N E L L C T N DARLING PATH DARLING PATH D AY BREAKAVE SHANNON PKWY SHANNON PKWY CRYS T A L P A T H 154TH ST W 153RD ST W C R E S T V I E W C I R S£ Location 102020 Evaporation & Infiltration Study ^_Monitoring Locations Monitoring Pond Subwatershed Land Use NC N eighborhood Commercial PO Existing Parks/Open Space LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_10_10.4.mxd 0 650Feet ¯Location 10 2024 Evaporation & Infiltration Study Page 116 of 199 ^_ Location 112020 Evaporation & Infiltration Study ^_Monitoring Locations Subwatershed Monitoring Pond Land Use MD R Medium Density Residential PO Existing Parks/Open Space LDR Low Density Residential Document Path: K:\011823-000\GIS\Maps\Pond Land Use Maps\Location_11_10.4.mxd 0 250Feet ¯Location 11 2024 Evaporation & Infiltration Study Page 117 of 199 Rosemount Water Quality Monitoring Program – 2022 City of Rosemount, MN WSB Project No. 021143-000 Attachment B Attachment B – 2024 Water Level Tables and Charts B.1 2024 Water Levels B.2 2024 Rainfall to Runoff Tables and Charts B.3 2024 Evaporation & Infiltration Tables Page 118 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 1 (Marcotte #1408) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/4--6/8 907.97 907.96 0.00 75.0 0.001 1.90 0.01 6/8--6/11 907.95 907.85 0.10 68.0 0.017 1.90 0.19 6/11--6/12 907.85 907.82 0.04 23.0 0.020 1.90 0.07 6/12--6/15 907.83 907.74 0.09 68.0 0.015 1.90 0.17 6/24--6/27 909.07 908.97 0.10 72.0 0.017 1.90 0.19 6/28--7/1 909.07 908.96 0.11 71.0 0.018 1.90 0.20 7/2--7/4 908.96 908.88 0.08 50.0 0.019 1.90 0.15 7/5--7/14 908.98 908.61 0.38 198.0 0.023 1.90 0.72 7/14--7/15 908.62 908.55 0.08 27.0 0.034 1.90 0.14 7/15--7/21 908.55 908.24 0.31 143.0 0.026 1.90 0.59 7/21--7/22 908.28 908.25 0.03 26.0 0.012 1.90 0.05 7/23--7/28 908.33 908.09 0.24 138.0 0.021 1.90 0.46 7/29--7/31 908.06 907.99 0.07 52.0 0.016 1.90 0.13 8/1--8/3 908.26 908.24 0.02 48.0 0.005 1.90 0.04 8/4--8/5 908.25 908.22 0.04 26.0 0.017 1.90 0.07 8/6--8/15 908.46 908.02 0.44 200.0 0.027 1.90 0.84 8/15--8/16 908.11 908.06 0.06 26.0 0.027 1.90 0.11 8/17--8/22 908.05 907.77 0.28 115.0 0.029 1.90 0.53 8/22--8/26 907.79 907.67 0.12 98.0 0.015 1.90 0.23 8/30--9/2 908.94 908.82 0.12 53.0 0.028 1.90 0.23 SUM = 5.13 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.001 0.034 Average Evaporation and Infiltration Rate (in/hr)0.019 Page 119 of 199 y = 0.409x R² = 0.808 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 1 (Marcotte #1408) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 120 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 1 (Marcotte #1408) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr) Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in) Rainfall / Runoff Ratio 21-Jun 1.83 908.08 909.44 64 0.0016 1.90 2.76 27.4 1.211 0.66 27-Jun 0.71 908.95 909.04 12 0.0016 1.90 0.20 27.4 0.089 0.13 31-Jul 0.95 907.97 908.28 27 0.0016 1.90 0.67 27.4 0.294 0.31 5-Aug 1.70 908.21 908.48 38 0.0016 1.90 0.63 27.4 0.276 0.16 29-Aug 1.86 908.03 908.96 26 0.0016 1.90 1.86 27.4 0.815 0.44 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.13 0.66 Rainfall to Runoff Ratio Based on Linear Regression 0.41 Page 121 of 199 2024 Water Quality and Quantity Monitoring Program 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 905.0 905.5 906.0 906.5 907.0 907.5 908.0 908.5 909.0 909.5 910.0 Da i l y R a i n f a l l ( i n c h e s ) Monitoring Location # 1 (Marcotte #1408) Surface Water Elevation & Rainfall Water Elevation (feet) Daily Rainfall (in.) Pump 2 On = 907.0' NWL/Pumps Off = 905.5' Pump 1 On = 906.5' High Water Level = 909.42' Page 122 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 2 (Glendalough #1486) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 925.34 925.18 0.16 28 0.069 1.39 0.22 6/3--6/4 925.78 925.54 0.25 32 0.092 1.39 0.34 6/4--6/11 925.61 924.74 0.87 151 0.069 1.39 1.21 6/11--6/12 924.74 924.67 0.08 24 0.038 1.39 0.11 6/12--6/13 924.76 924.73 0.03 10 0.038 1.39 0.04 6/13--6/15 924.73 924.58 0.15 55 0.033 1.39 0.21 6/16--6/17 925.21 925.13 0.08 23 0.041 1.39 0.11 6/18--6/18 925.78 925.64 0.14 18 0.093 1.39 0.19 6/19--6/21 925.87 925.48 0.39 50 0.093 1.39 0.54 6/22--6/27 926.23 925.27 0.96 117 0.099 1.39 1.34 6/28--6/28 925.49 925.43 0.06 10 0.072 1.39 0.08 6/28--6/29 925.43 925.39 0.04 7 0.065 1.39 0.05 6/29--7/1 925.38 925.04 0.34 62 0.065 1.39 0.47 7/2--7/4 925.05 924.85 0.19 50 0.047 1.39 0.27 7/5--7/14 925.11 924.53 0.58 208 0.034 1.39 0.81 7/14--7/15 924.57 924.53 0.05 26 0.022 1.39 0.07 7/15--7/21 924.54 924.33 0.22 141 0.018 1.39 0.30 7/21--7/22 924.71 924.66 0.05 27 0.024 1.39 0.08 7/23--7/28 925.06 924.70 0.36 140 0.031 1.39 0.50 8/1--8/3 925.53 925.28 0.25 52 0.058 1.39 0.35 8/4--8/5 925.33 925.24 0.09 26 0.042 1.39 0.13 8/5--8/15 925.82 925.03 0.78 219 0.043 1.39 1.09 8/15--8/16 925.31 925.25 0.06 26 0.028 1.39 0.08 8/17--8/22 925.25 925.02 0.23 115 0.024 1.39 0.33 8/22--8/23 925.05 925.03 0.02 15 0.017 1.39 0.03 8/23--8/26 925.03 924.92 0.11 79 0.017 1.39 0.16 8/27--8/29 925.79 925.53 0.27 56 0.057 1.39 0.37 8/29--9/5 926.45 925.52 0.93 149 0.075 1.39 1.30 9/5--9/6 925.51 925.43 0.09 33 0.031 1.39 0.12 9/6--9/14 925.43 925.02 0.41 186 0.026 1.39 0.57 9/14--9/19 925.06 924.87 0.19 120 0.019 1.39 0.26 9/19--10/24 924.88 924.17 0.70 831 0.010 1.39 0.98 SUM = 12.7 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.010 0.099 Average Evaporation and Infiltration Rate (in/hr)0.047 Page 123 of 199 y = 0.052x R² = 0.926 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.00 0.50 1.00 1.50 2.00 2.50 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 2 (Glendalough #1486) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 124 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 2 (Glendalough #1486) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 2.07 924.85 925.37 21 0.0039 1.39 0.84 143.3 0.070 0.03 2-Jun 1.30 925.18 925.79 16 0.0039 1.39 0.93 143.3 0.078 0.06 4-Jun 0.48 925.54 925.61 4 0.0039 1.39 0.12 143.3 0.010 0.02 12-Jun 0.38 924.67 924.76 2 0.0039 1.39 0.15 143.3 0.012 0.03 15-Jun 1.55 924.57 925.21 15 0.0039 1.39 0.96 143.3 0.081 0.05 17-Jun 1.42 925.13 925.81 17 0.0039 1.39 1.05 143.3 0.088 0.06 18-Jun 0.44 925.64 925.87 3 0.0039 1.39 0.33 143.3 0.028 0.06 21-Jun 1.81 925.48 926.24 38 0.0039 1.39 1.27 143.3 0.106 0.06 28-Jun 0.68 925.24 925.49 7 0.0039 1.39 0.39 143.3 0.032 0.05 4-Jul 1.12 924.85 925.10 11 0.0039 1.39 0.40 143.3 0.034 0.03 5-Jul 0.30 925.07 925.11 3 0.0039 1.39 0.07 143.3 0.006 0.02 14-Jul 0.13 924.53 924.58 3 0.0039 1.39 0.09 143.3 0.007 0.06 15-Jul 0.19 924.53 924.54 3 0.0039 1.39 0.04 143.3 0.004 0.02 21-Jul 0.67 924.33 924.71 2 0.0039 1.39 0.53 143.3 0.045 0.07 22-Jul 0.69 924.65 925.08 2 0.0039 1.39 0.61 143.3 0.051 0.07 1-Aug 0.02 925.51 925.55 3 0.0039 1.39 0.08 143.3 0.007 0.38 3-Aug 0.30 925.28 925.34 3 0.0039 1.39 0.09 143.3 0.008 0.03 5-Aug 1.64 925.24 925.82 14 0.0039 1.39 0.88 143.3 0.074 0.05 15-Aug 0.95 925.03 925.31 3 0.0039 1.39 0.40 143.3 0.034 0.04 16-Aug 0.18 925.25 925.26 17 0.0039 1.39 0.11 143.3 0.009 0.05 22-Aug 0.19 925.02 925.06 3 0.0039 1.39 0.07 143.3 0.006 0.03 26-Aug 1.32 924.92 925.80 12 0.0039 1.39 1.29 143.3 0.108 0.08 29-Aug 1.74 925.53 926.47 3 0.0039 1.39 1.32 143.3 0.111 0.06 14-Sep 0.09 925.02 925.06 2 0.0039 1.39 0.06 143.3 0.005 0.06 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.02 0.38 Rainfall to Runoff Ratio Based on Linear Regression 0.05 Page 125 of 199 2024 Water Quality and Quantity Monitoring Program 0.000 0.500 1.000 1.500 2.000 923.0 923.5 924.0 924.5 925.0 925.5 926.0 926.5 927.0 927.5 928.0 928.5 929.0 929.5 930.0 930.5 Da i l y R a i n f a l l ( i n c h e s ) Monitoring Location # 2 (Glendalough #1486) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) Pump 1 Off /NWL = 926.0' High Water Level = 935.3' Pump 1 On/Pump 2 Off Level = 927.5' Pump 2 On Level = 930.0' Page 126 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 3 (Trailer Park #1589) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 927.72 926.77 0.95 36 0.318 0.87 0.83 6/2--6/3 926.99 926.27 0.72 16 0.536 0.87 0.62 6/3--6/4 927.63 927.01 0.63 21 0.359 0.87 0.55 6/5--6/7 926.96 926.38 0.58 37 0.187 0.87 0.50 6/7--6/8 926.53 926.37 0.16 13 0.145 0.87 0.14 6/8--6/11 926.32 925.82 0.50 68 0.088 0.87 0.43 6/11--6/12 925.86 925.77 0.09 23 0.047 0.87 0.08 6/12--6/13 926.15 926.10 0.05 10 0.059 0.87 0.04 6/13--6/15 926.09 925.82 0.27 55 0.059 0.87 0.24 6/16--6/17 927.58 927.07 0.51 16 0.385 0.87 0.45 6/18--6/18 926.58 926.29 0.29 4 0.876 0.87 0.25 6/18--6/18 927.60 927.23 0.37 10 0.443 0.87 0.32 6/19--6/21 927.75 926.56 1.18 50 0.283 0.87 1.03 6/22--6/27 928.46 925.96 2.49 119 0.251 0.87 2.17 6/28--6/28 927.06 926.90 0.16 10 0.190 0.87 0.14 6/29--7/1 926.80 926.18 0.63 62 0.121 0.87 0.54 7/2--7/4 926.23 925.91 0.32 49 0.078 0.87 0.28 7/4--7/5 927.00 926.90 0.10 7 0.165 0.87 0.08 7/5--7/7 927.16 926.62 0.54 39 0.167 0.87 0.47 7/7--7/9 926.63 926.10 0.53 61 0.104 0.87 0.46 7/9--7/13 926.08 925.74 0.34 91 0.045 0.87 0.29 7/13--7/14 925.75 925.74 0.01 9 0.012 0.87 0.01 7/14--7/15 925.90 925.83 0.07 27 0.033 0.87 0.06 7/15--7/21 925.91 925.61 0.30 141 0.026 0.87 0.27 7/21--7/22 926.99 926.51 0.47 29 0.196 0.87 0.41 7/22--7/28 927.65 925.90 1.75 147 0.143 0.87 1.52 7/29--7/31 926.12 925.89 0.23 52 0.053 0.87 0.20 8/1--8/3 929.24 927.95 1.29 58 0.267 0.87 1.12 8/4--8/5 928.15 927.87 0.27 26 0.126 0.87 0.24 8/6--8/7 928.96 928.29 0.66 40 0.199 0.87 0.58 8/8--8/15 928.27 927.24 1.03 170 0.072 0.87 0.89 8/15--8/16 928.17 927.93 0.25 32 0.092 0.87 0.21 8/16--8/17 928.00 927.93 0.07 12 0.068 0.87 0.06 8/17--8/22 928.02 927.36 0.66 116 0.069 0.87 0.58 8/22--8/23 927.51 927.46 0.05 16 0.038 0.87 0.04 8/23--8/26 927.45 927.21 0.24 79 0.036 0.87 0.21 8/27--8/29 927.87 926.60 1.27 52 0.293 0.87 1.10 8/29--8/30 927.31 926.80 0.50 7 0.861 0.87 0.44 8/30--9/5 927.97 925.99 1.98 133 0.179 0.87 1.73 9/5--9/14 926.00 925.53 0.47 221 0.026 0.87 0.41 9/14--9/19 925.83 925.62 0.22 120 0.022 0.87 0.19 9/19--10/24 925.61 925.25 0.37 832 0.005 0.87 0.32 SUM = 20.50 * Evaporation and Infiltration rates were selected from periods of no rain. Range of Evaporation and Infiltration Rates (in/hr)0.005 0.876 Average Evaporation and Infiltration Rate (in/hr)0.184 Page 127 of 199 y = 0.290x R² = 0.897 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.00 0.50 1.00 1.50 2.00 2.50 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 3 (Trailer Park #1589) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 128 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 3 (Trailer Park #1589) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 2.07 925.90 927.76 21 0.0153 0.87 1.90 38.3 0.596 0.29 2-Jun 0.28 926.75 926.99 2 0.0153 0.87 0.23 38.3 0.074 0.26 3-Jun 0.93 926.86 927.67 16 0.0153 0.87 0.92 38.3 0.288 0.31 4-Jun 0.48 927.01 927.35 11 0.0153 0.87 0.45 38.3 0.141 0.30 7-Jun 0.22 926.35 926.55 4 0.0153 0.87 0.23 38.3 0.071 0.32 11-Jun 0.07 925.82 925.86 2 0.0153 0.87 0.06 38.3 0.020 0.27 12-Jun 0.39 925.77 926.15 3 0.0153 0.87 0.37 38.3 0.118 0.30 15-Jun 0.77 925.83 926.83 7 0.0153 0.87 0.96 38.3 0.302 0.40 15-Jun 0.38 926.86 927.38 2 0.0153 0.87 0.48 38.3 0.151 0.39 18-Jun 1.43 926.29 927.64 3 0.0153 0.87 1.22 38.3 0.381 0.27 18-Jun 0.37 927.23 927.80 1 0.0153 0.87 0.51 38.3 0.161 0.44 21-Jun 0.48 926.57 927.03 4 0.0153 0.87 0.46 38.3 0.143 0.30 21-Jun 0.14 926.97 927.08 2 0.0153 0.87 0.13 38.3 0.041 0.29 21-Jun 0.66 927.07 927.94 5 0.0153 0.87 0.82 38.3 0.256 0.39 22-Jun 0.44 927.59 928.54 2 0.0153 0.87 0.85 38.3 0.268 0.61 28-Jun 0.69 925.93 927.07 8 0.0153 0.87 1.10 38.3 0.345 0.50 28-Jun 0.07 926.89 926.94 1 0.0153 0.87 0.06 38.3 0.018 0.25 2-Jul 0.09 926.16 926.24 3 0.0153 0.87 0.11 38.3 0.035 0.38 4-Jul 0.39 925.91 926.16 5 0.0153 0.87 0.28 38.3 0.089 0.23 4-Jul 0.73 926.16 927.01 4 0.0153 0.87 0.79 38.3 0.249 0.34 5-Jul 0.30 926.88 927.18 3 0.0153 0.87 0.30 38.3 0.093 0.31 7-Jul 0.06 926.62 926.64 1 0.0153 0.87 0.03 38.3 0.010 0.17 14-Jul 0.13 925.74 925.91 2 0.0153 0.87 0.17 38.3 0.054 0.41 15-Jul 0.17 925.83 925.91 2 0.0153 0.87 0.10 38.3 0.030 0.18 21-Jul 0.67 925.61 927.00 3 0.0153 0.87 1.25 38.3 0.392 0.58 22-Jul 0.62 926.51 927.67 1 0.0153 0.87 1.02 38.3 0.319 0.51 28-Jul 0.17 925.90 926.09 2 0.0153 0.87 0.19 38.3 0.059 0.34 29-Jul 0.01 926.08 926.12 2 0.0153 0.87 0.06 38.3 0.020 1.63 3-Aug 0.30 927.95 928.16 3 0.0153 0.87 0.22 38.3 0.069 0.23 5-Aug 0.13 927.87 928.01 2 0.0153 0.87 0.15 38.3 0.046 0.35 5-Aug 1.34 927.97 929.07 4 0.0153 0.87 1.00 38.3 0.315 0.23 15-Aug 0.95 927.24 928.18 3 0.0153 0.87 0.85 38.3 0.268 0.28 16-Aug 0.18 927.93 928.07 21 0.0153 0.87 0.41 38.3 0.128 0.71 22-Aug 0.19 927.36 927.51 2 0.0153 0.87 0.16 38.3 0.050 0.27 26-Aug 0.79 927.21 927.61 1 0.0153 0.87 0.36 38.3 0.111 0.14 30-Aug 1.86 926.80 928.02 8 0.0153 0.87 1.16 38.3 0.364 0.20 5-Sep 0.04 925.99 926.00 2 0.0153 0.87 0.04 38.3 0.013 0.30 14-Sep 0.09 925.53 925.83 2 0.0153 0.87 0.29 38.3 0.092 1.00 * E/I = Evaporation and infiltration rate included in volume calculation 0.29 Rainfall to Runoff Ratio Based on Linear Regression Range of Rainfall to Runoff Ratios 0.14 1.63 Page 129 of 199 2024 Water Quality and Quantity Monitoring Program 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 924.0 924.5 925.0 925.5 926.0 926.5 927.0 927.5 928.0 928.5 929.0 929.5 930.0 930.5 931.0 931.5 932.0 932.5 933.0 933.5 934.0 934.5 935.0 935.5 936.0 Monitoring Location # 3 (Trailer Park #1589) Surface Water Elevation & Rainfall Water Elevation (feet) Daily Rainfall (in.) Outlet Elevation = 935.7' NWL = 928' High Water Elevation = 940.68' Page 130 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 4 (Unnamed #1687) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 929.58 929.26 0.31 25 0.151 0.55 0.17 6/3--6/4 930.41 929.39 1.02 32 0.384 0.55 0.57 6/4--6/8 929.59 928.59 0.99 75 0.159 0.55 0.55 6/8--6/11 928.55 928.10 0.45 68 0.080 0.55 0.25 6/11--6/12 928.12 927.97 0.14 24 0.072 0.55 0.08 6/12--6/13 928.18 928.12 0.06 11 0.070 0.55 0.04 6/13--6/15 928.11 927.81 0.30 55 0.065 0.55 0.17 6/16--6/17 929.52 929.32 0.20 21 0.115 0.55 0.11 6/18--6/18 929.90 929.56 0.34 16 0.256 0.55 0.19 6/19--6/21 929.91 929.08 0.83 49 0.203 0.55 0.46 6/22--6/22 930.32 930.01 0.31 8 0.468 0.55 0.17 6/22--6/27 930.69 928.50 2.19 118 0.223 0.55 1.21 6/29--7/1 929.06 928.50 0.55 62 0.107 0.55 0.31 7/2--7/4 928.55 928.28 0.26 50 0.063 0.55 0.14 7/5--7/14 929.02 927.95 1.07 208 0.062 0.55 0.59 7/14--7/15 928.06 927.96 0.10 29 0.040 0.55 0.05 7/15--7/21 928.01 927.56 0.45 142 0.038 0.55 0.25 7/21--7/22 928.44 928.27 0.17 27 0.076 0.55 0.09 7/23--7/28 929.09 928.12 0.96 140 0.082 0.55 0.53 7/29--7/31 928.25 928.03 0.22 57 0.046 0.55 0.12 8/1--8/3 929.60 928.98 0.61 52 0.141 0.55 0.34 8/4--8/5 929.10 928.92 0.18 27 0.079 0.55 0.10 8/6--8/15 930.20 928.44 1.76 217 0.097 0.55 0.97 8/15--8/16 928.96 928.82 0.14 24 0.070 0.55 0.08 8/16--8/16 928.81 928.81 0.01 6 0.012 0.55 0.00 8/16--8/17 928.84 928.79 0.05 12 0.052 0.55 0.03 8/17--8/22 928.83 928.36 0.47 115 0.049 0.55 0.26 8/22--8/23 928.44 928.40 0.04 16 0.034 0.55 0.02 8/23--8/26 928.39 928.16 0.22 79 0.034 0.55 0.12 8/27--8/29 929.99 929.06 0.93 56 0.198 0.55 0.51 8/29--9/14 931.42 928.25 3.17 374 0.102 0.55 1.76 9/14--10/24 928.39 927.02 1.38 954 0.017 0.55 0.76 SUM = 11.02 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.012 0.468 Average Evaporation and Infiltration Rate (in/hr)0.114 Page 131 of 199 y = 0.118x R² = 0.944 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0 0.5 1 1.5 2 2.5 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 4 (Unnamed #1687) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 132 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 4 (Unnamed #1687) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac)Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 2.15 927.94 929.60 30 0.0095 0.55 1.08 58.8 0.220 0.10 2-Jun 0.351 929.26 929.40 3 0.0095 0.55 0.09 58.8 0.018 0.05 3-Jun 0.932 929.29 930.43 5 0.0095 0.55 0.66 58.8 0.134 0.14 4-Jun 0.429 929.39 929.61 3 0.0095 0.55 0.14 58.8 0.028 0.07 11-Jun 0.072 928.10 928.12 1 0.0095 0.55 0.01 58.8 0.003 0.04 12-Jun 0.382 927.98 928.18 2 0.0095 0.55 0.12 58.8 0.025 0.06 15-Jun 1.548 927.81 929.52 17 0.0095 0.55 1.04 58.8 0.212 0.14 17-Jun 1.265 929.32 930.70 6 0.0095 0.55 0.79 58.8 0.162 0.13 18-Jun 0.438 929.55 929.92 5 0.0095 0.55 0.23 58.8 0.048 0.11 21-Jun 1.394 929.08 930.33 25 0.0095 0.55 0.82 58.8 0.168 0.12 22-Jun 0.44 930.01 930.69 4 0.0095 0.55 0.40 58.8 0.081 0.18 28-Jun 0.676 928.47 929.12 7 0.0095 0.55 0.40 58.8 0.081 0.12 28-Jun 0.07 929.09 929.11 1 0.0095 0.55 0.01 58.8 0.003 0.04 2-Jul 0.092 928.50 928.55 2 0.0095 0.55 0.04 58.8 0.008 0.09 4-Jul 1.081 928.28 928.89 11 0.0095 0.55 0.39 58.8 0.080 0.07 5-Jul 0.527 928.85 929.02 4 0.0095 0.55 0.12 58.8 0.024 0.05 14-Jul 0.13 927.95 928.06 1 0.0095 0.55 0.06 58.8 0.013 0.10 15-Jul 0.19 927.96 928.01 2 0.0095 0.55 0.04 58.8 0.007 0.04 21-Jul 0.705 927.56 928.44 5 0.0095 0.55 0.51 58.8 0.104 0.15 22-Jul 0.686 928.27 929.14 5 0.0095 0.55 0.51 58.8 0.104 0.15 28-Jul 0.185 928.12 928.25 8 0.0095 0.55 0.11 58.8 0.023 0.12 3-Aug 0.227 928.98 929.10 2 0.0095 0.55 0.08 58.8 0.016 0.07 5-Aug 1.682 928.93 930.23 18 0.0095 0.55 0.82 58.8 0.167 0.10 15-Aug 0.945 928.44 928.97 5 0.0095 0.55 0.32 58.8 0.064 0.07 16-Aug 0.079 928.81 928.84 1 0.0095 0.55 0.03 58.8 0.005 0.07 17-Aug 0.089 928.79 928.87 2 0.0095 0.55 0.05 58.8 0.010 0.11 22-Aug 0.189 928.36 928.44 2 0.0095 0.55 0.06 58.8 0.011 0.06 26-Aug 0.787 928.16 929.36 5 0.0095 0.55 0.69 58.8 0.140 0.18 27-Aug 0.53 929.29 929.99 2 0.0095 0.55 0.40 58.8 0.081 0.15 29-Aug 1.86 929.06 931.45 6 0.0095 0.55 1.36 58.8 0.277 0.15 14-Sep 0.092 928.25 928.39 2 0.0095 0.55 0.09 58.8 0.019 0.20 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.04 0.20 Rainfall to Runoff Ratio Based on Linear Regression 0.12 Page 133 of 199 2023 Water Quality and Quantity Monitoring Program 0.00 0.50 1.00 1.50 2.00 925.0 925.5 926.0 926.5 927.0 927.5 928.0 928.5 929.0 929.5 930.0 930.5 931.0 931.5 932.0 932.5 Monitoring Location # 4 (Unnamed #1687) Surface Water Elevation & Rainfall Water Elevation (feet) Daily Rainfall (in.) NWL = 929.74' High water elevation = 940.03' OCS Closed Gate Valve Outlet Elevation = 932' Page 134 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 5 (Cat #1716) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 916.70 916.35 0.35 34 0.124 0.55 0.19 6/3--6/4 917.09 916.43 0.67 33 0.242 0.55 0.37 6/4--6/8 916.63 916.19 0.43 76 0.069 0.55 0.24 6/8--6/11 916.19 916.00 0.19 68 0.033 0.55 0.10 6/11--6/12 916.01 915.96 0.05 23 0.026 0.55 0.03 6/12--6/13 916.14 916.14 0.00 9 0.004 0.55 0.00 6/13--6/15 916.14 916.02 0.12 55 0.027 0.55 0.07 6/16--6/17 916.92 916.41 0.51 23 0.269 0.55 0.28 6/18--6/18 916.72 916.72 0.01 18 0.004 0.55 0.00 6/19--6/20 916.74 916.40 0.34 37 0.109 0.55 0.19 6/20--6/21 916.39 916.37 0.03 11 0.029 0.55 0.01 6/22--6/22 917.17 916.87 0.30 10 0.361 0.55 0.17 6/22--6/27 917.30 916.34 0.96 120 0.096 0.55 0.53 6/28--6/28 916.81 916.57 0.24 12 0.240 0.55 0.13 6/28--6/29 916.55 916.49 0.06 7 0.099 0.55 0.03 6/29--7/1 916.49 916.29 0.19 62 0.037 0.55 0.11 7/2--7/4 916.34 916.25 0.09 49 0.022 0.55 0.05 7/4--7/5 916.63 916.53 0.09 7 0.161 0.55 0.05 7/5--7/5 916.58 916.52 0.06 7 0.098 0.55 0.03 7/5--7/7 916.50 916.35 0.16 31 0.061 0.55 0.09 7/7--7/9 916.35 916.22 0.13 62 0.025 0.55 0.07 7/9--7/13 916.22 916.03 0.20 101 0.023 0.55 0.11 7/14--7/15 916.13 916.09 0.04 25 0.018 0.55 0.02 7/15--7/21 916.13 915.92 0.21 143 0.018 0.55 0.12 7/21--7/22 916.18 916.17 0.02 19 0.010 0.55 0.01 7/23--7/28 916.59 916.08 0.51 138 0.044 0.55 0.28 7/29--7/31 916.72 916.28 0.44 55 0.096 0.55 0.24 8/1--8/3 917.20 916.33 0.87 66 0.159 0.55 0.48 8/4--8/5 916.42 916.34 0.08 26 0.037 0.55 0.04 8/5--8/7 917.23 916.42 0.81 50 0.195 0.55 0.45 8/8--8/15 916.42 916.13 0.29 169 0.021 0.55 0.16 8/15--8/16 916.55 916.37 0.18 26 0.083 0.55 0.10 8/17--8/22 916.43 916.17 0.27 114 0.028 0.55 0.15 8/22--8/26 916.23 916.12 0.11 95 0.014 0.55 0.06 8/27--8/29 917.08 916.33 0.74 55 0.162 0.55 0.41 8/29--9/5 917.52 916.32 1.20 149 0.097 0.55 0.66 9/5--9/6 916.33 916.29 0.04 27 0.017 0.55 0.02 9/6--9/14 916.32 916.06 0.26 186 0.017 0.55 0.14 9/14--9/19 916.15 916.00 0.15 120 0.015 0.55 0.08 9/19--10/24 916.00 915.24 0.76 831 0.011 0.55 0.42 SUM = 6.70 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.004 0.361 Average Evaporation and Infiltration Rate (in/hr)0.080 Page 135 of 199 y = 0.133x R² = 0.892 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 5 (Cat #1716) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 136 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 5 (Cat #1716) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft)End Elevation (ft)Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 1.652 916.17 916.94 15 0.0067 2.69 2.33 169.2 0.165 0.10 2-Jun 1.297 916.35 917.11 14 0.0067 2.69 2.30 169.2 0.163 0.13 4-Jun 0.429 916.43 916.63 4 0.0067 2.69 0.62 169.2 0.044 0.10 11-Jun 0.072 916.00 916.01 3 0.0067 2.69 0.10 169.2 0.007 0.10 12-Jun 0.388 915.96 916.15 5 0.0067 2.69 0.58 169.2 0.041 0.11 15-Jun 1.54 916.02 917.00 16 0.0067 2.69 2.93 169.2 0.208 0.13 17-Jun 1.185 916.59 917.11 4 0.0067 2.69 1.49 169.2 0.105 0.09 18-Jun 0.436 916.47 916.75 3 0.0067 2.69 0.81 169.2 0.057 0.13 21-Jun 1.362 916.37 917.21 24 0.0067 2.69 2.70 169.2 0.191 0.14 22-Jun 0.436 916.87 917.34 2 0.0067 2.69 1.28 169.2 0.091 0.21 27-Jun 0.664 916.33 916.81 8 0.0067 2.69 1.42 169.2 0.101 0.15 1-Jul 0.1 916.29 916.34 7 0.0067 2.69 0.26 169.2 0.018 0.18 4-Jul 1.081 916.25 916.65 11 0.0067 2.69 1.28 169.2 0.091 0.08 5-Jul 0.585 916.53 916.59 4 0.0067 2.69 0.24 169.2 0.017 0.03 9-Jul 0.006 916.22 916.22 1 0.0067 2.69 0.02 169.2 0.001 0.24 14-Jul 0.13 916.03 916.13 5 0.0067 2.69 0.37 169.2 0.027 0.20 15-Jul 0.19 916.09 916.13 3 0.0067 2.69 0.16 169.2 0.012 0.06 21-Jul 0.705 915.92 916.18 11 0.0067 2.69 0.91 169.2 0.064 0.09 22-Jul 0.17 916.17 916.77 2 0.0067 2.69 1.65 169.2 0.117 0.69 31-Jul 0.667 916.28 917.21 10 0.0067 2.69 2.68 169.2 0.190 0.29 3-Aug 0.227 916.33 916.42 2 0.0067 2.69 0.29 169.2 0.021 0.09 5-Aug 0.197 916.34 916.42 6 0.0067 2.69 0.33 169.2 0.023 0.12 5-Aug 1.356 916.41 917.23 5 0.0067 2.69 2.30 169.2 0.163 0.12 15-Aug 0.945 916.13 916.55 3 0.0067 2.69 1.18 169.2 0.084 0.09 16-Aug 0.212 916.37 916.48 26 0.0067 2.69 0.75 169.2 0.053 0.25 22-Aug 0.189 916.17 916.24 4 0.0067 2.69 0.26 169.2 0.018 0.10 26-Aug 1.297 916.12 917.16 12 0.0067 2.69 3.02 169.2 0.214 0.17 29-Aug 1.86 916.33 918.06 2 0.0067 2.69 4.70 169.2 0.333 0.18 6-Sep 0.012 916.29 916.32 6 0.0067 2.69 0.19 169.2 0.013 1.11 14-Sep 0.092 916.06 916.15 2 0.0067 2.69 0.29 169.2 0.020 0.22 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.03 1.11 Rainfall to Runoff Ratio Based on Linear Regression 0.13 Page 137 of 199 2024 Water Quality and Quantity Monitoring Program 0.245 0 0 0 0 0.00 0.50 1.00 1.50 2.00 913.5 914.0 914.5 915.0 915.5 916.0 916.5 917.0 917.5 918.0 918.5 Monitoring Location # 5 (Cat #1716) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) NWL= 916' Closed valve outlet elevation is 924.0" Highest water elevation is = 923.8' Page 138 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 6 (Erickson #579) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/12--6/13 919.69 919.54 0.14 14 0.121 2.26 0.32 6/16--6/17 920.11 919.63 0.48 25 0.230 2.26 1.08 6/18--6/18 920.10 919.81 0.29 16 0.220 2.26 0.66 6/19--6/21 920.03 919.45 0.57 49 0.140 2.26 1.29 7/2--7/2 919.67 919.53 0.14 7 0.247 2.26 0.33 7/5--7/6 919.67 919.49 0.18 17 0.126 2.26 0.40 7/23--7/23 919.85 919.68 0.17 8 0.256 2.26 0.39 8/5--8/7 920.03 919.47 0.56 34 0.198 2.26 1.27 8/27--8/28 919.97 919.54 0.43 27 0.193 2.26 0.98 8/29--8/31 920.64 919.66 0.98 35 0.336 2.26 2.22 9/15--10/24 919.68 918.74 0.94 930 0.012 2.26 2.12 SUM = 11.06 * Evaporation and Infiltration rates were calculated during periods of no rain and when the splash pad was not in operation. Range of Evaporation and Infiltration Rates (in/hr)0.012 0.336 Average Evaporation and Infiltration Rate (in/hr)0.189 Page 139 of 199 y = 0.173x R² = 0.857 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 6 (Erickson #579) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 140 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 6 (Erickson #579) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 12-Jun 0.39 919.51 919.70 7 0.0158 2.26 166.2 0.049 0.13 15-Jun 0.59 919.50 920.30 9 0.0158 2.26 166.2 0.153 0.26 17-Jun 1.19 919.62 920.61 5 0.0158 2.26 166.2 0.174 0.15 15-Jun 0.26 919.45 920.01 3 0.0158 2.26 166.2 0.099 0.38 17-Jun 0.45 919.53 920.26 7 0.0158 2.26 166.2 0.138 0.30 21-Jun 0.09 919.54 919.67 3 0.0158 2.26 166.2 0.030 0.33 2-Jul 0.29 919.54 920.07 2 0.0158 2.26 166.2 0.091 0.31 4-Jul 0.33 919.49 920.34 2 0.0158 2.26 166.2 0.144 0.43 5-Jul 0.62 919.48 920.18 10 0.0158 2.26 166.2 0.139 0.22 22-Jul 0.35 919.48 920.39 1 0.0158 2.26 166.2 0.151 0.43 5-Aug 0.64 919.65 920.23 1 0.0158 2.26 166.2 0.097 0.15 15-Aug 0.51 919.55 920.03 1 0.0158 2.26 166.2 0.082 0.16 26-Aug 1.73 919.47 920.78 9 0.0158 2.26 166.2 0.237 0.14 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.13 0.43 Rainfall to Runoff Ratio Based on Linear Regression 0.17 Page 141 of 199 2024 Water Quality and Quantity Monitoring Program 0.00 0.50 1.00 1.50 2.00 918.0 918.5 919.0 919.5 920.0 920.5 921.0 921.5 922.0 Da i l y R a i n f a l l ( i n c h e s ) Su r f a c e W a t e r E l e v a t i o n ( f t ) Monitoring Location # 6 (Erickson #579) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) No outlet NWL = 923, HWL = 933.73 ** Discharge from the pond to the adjacent wetland has been observed through a preferntial drainage path within the wooded area seperating the basin and the wetland 2024 Splash Pad Operation: 6/6 through 9/15. Pond Outlet to Wetland = 919.69' Observed Discharge Point from Pond to Wetland = 919.09'** Page 142 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 7 (Bloomfield #1864) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 908.73 908.44 0.28 28 0.120 0.79 0.22 6/3--6/4 909.00 908.58 0.41 31 0.161 0.79 0.33 6/4--6/11 908.78 908.17 0.62 151 0.049 0.79 0.49 6/11--6/12 908.17 908.13 0.04 24 0.022 0.79 0.03 6/12--6/15 908.28 908.15 0.13 68 0.022 0.79 0.10 6/16--6/17 908.94 908.55 0.38 24 0.192 0.79 0.30 6/18--6/18 908.79 908.62 0.18 18 0.117 0.79 0.14 6/19--6/21 908.85 908.52 0.32 50 0.078 0.79 0.26 6/22--6/22 909.00 908.94 0.06 3 0.240 0.79 0.05 6/23--6/27 908.98 908.47 0.51 111 0.055 0.79 0.41 6/28--6/28 908.87 908.78 0.09 10 0.103 0.79 0.07 6/28--7/1 908.78 908.53 0.25 71 0.042 0.79 0.20 7/2--7/4 908.54 908.44 0.10 50 0.024 0.79 0.08 7/5--7/7 908.96 908.72 0.24 40 0.073 0.79 0.19 7/7--7/9 908.72 908.56 0.15 61 0.030 0.79 0.12 7/9--7/14 908.56 908.39 0.17 102 0.020 0.79 0.13 7/14--7/15 908.48 908.44 0.04 27 0.017 0.79 0.03 7/15--7/21 908.46 908.26 0.21 141 0.018 0.79 0.16 7/21--7/22 908.51 908.46 0.05 27 0.021 0.79 0.04 7/22--7/28 908.86 908.41 0.44 147 0.036 0.79 0.35 7/29--7/31 908.98 908.64 0.33 56 0.071 0.79 0.26 8/1--8/3 909.00 908.71 0.29 52 0.066 0.79 0.23 8/4--8/5 908.78 908.69 0.08 26 0.037 0.79 0.06 8/6--8/15 908.99 908.43 0.56 209 0.032 0.79 0.44 8/15--8/16 908.85 908.71 0.13 26 0.061 0.79 0.11 8/16--8/17 908.79 908.75 0.04 12 0.042 0.79 0.03 8/17--8/22 908.77 908.52 0.25 116 0.026 0.79 0.20 8/22--8/23 908.57 908.54 0.02 16 0.019 0.79 0.02 8/27--8/29 908.99 908.71 0.29 50 0.068 0.79 0.23 8/30--9/5 908.99 908.54 0.45 139 0.039 0.79 0.36 9/5--9/14 908.54 908.30 0.24 222 0.013 0.79 0.19 9/14--9/19 908.37 908.26 0.11 120 0.011 0.79 0.09 9/19--10/24 908.31 907.72 0.59 832 0.009 0.79 0.47 * Evaporation and Infiltration rates were selected from periods on no rain. SUM = 6.39 Average Evaporation and Infiltration Rate (in/hr)0.059 Range of Evaporation and Infiltration Rates (in/hr)0.009 0.240 Page 143 of 199 y = 0.140x R² = 0.933 0.00 0.05 0.10 0.15 0.20 0.25 0.00 0.50 1.00 1.50 2.00 2.50 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 7 (Bloomfield #1864) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 144 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 7 (Bloomfield #1864) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)*Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 1.94 908.09 908.92 18 0.0049 0.79 0.73 37.3 0.235 0.12 2-Jun 1.30 908.44 909.11 14 0.0049 0.79 0.58 37.3 0.185 0.14 4-Jun 0.48 908.58 908.79 4 0.0049 0.79 0.18 37.3 0.059 0.12 12-Jun 0.39 908.13 908.28 4 0.0049 0.79 0.13 37.3 0.043 0.11 15-Jun 1.55 908.15 908.97 15 0.0049 0.79 0.70 37.3 0.226 0.15 17-Jun 1.27 908.55 909.11 5 0.0049 0.79 0.46 37.3 0.148 0.12 18-Jun 0.44 908.62 908.86 3 0.0049 0.79 0.20 37.3 0.065 0.15 21-Jun 1.27 908.52 909.23 21 0.0049 0.79 0.64 37.3 0.207 0.16 22-Jun 0.44 908.94 909.28 2 0.0049 0.79 0.28 37.3 0.090 0.21 28-Jun 0.69 908.46 908.88 8 0.0049 0.79 0.36 37.3 0.116 0.17 4-Jul 1.70 908.44 908.96 25 0.0049 0.79 0.51 37.3 0.164 0.10 14-Jul 0.13 908.39 908.48 3 0.0049 0.79 0.08 37.3 0.026 0.20 15-Jul 0.19 908.44 908.47 4 0.0049 0.79 0.04 37.3 0.012 0.06 21-Jul 0.67 908.26 908.51 3 0.0049 0.79 0.21 37.3 0.067 0.10 22-Jul 0.69 908.46 908.86 2 0.0049 0.79 0.32 37.3 0.104 0.15 31-Jul 0.90 908.64 909.25 10 0.0049 0.79 0.52 37.3 0.166 0.19 3-Aug 0.30 908.71 908.78 3 0.0049 0.79 0.06 37.3 0.020 0.07 5-Aug 1.49 908.69 909.31 12 0.0049 0.79 0.53 37.3 0.172 0.12 15-Aug 0.95 908.43 908.85 4 0.0049 0.79 0.35 37.3 0.112 0.12 16-Aug 0.08 908.69 908.79 1 0.0049 0.79 0.08 37.3 0.027 0.34 17-Aug 0.09 908.75 908.80 3 0.0049 0.79 0.05 37.3 0.017 0.19 22-Aug 0.19 908.52 908.57 2 0.0049 0.79 0.04 37.3 0.014 0.07 26-Aug 0.79 908.42 908.97 2 0.0049 0.79 0.44 37.3 0.140 0.18 27-Aug 0.51 908.85 909.21 1 0.0049 0.79 0.29 37.3 0.092 0.18 29-Aug 1.41 908.71 909.97 1 0.0049 0.79 1.00 37.3 0.321 0.23 14-Sep 0.09 908.30 908.37 2 0.0049 0.79 0.07 37.3 0.021 0.23 19-Sep 0.04 908.26 908.31 2 0.0049 0.79 0.05 37.3 0.016 0.41 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.06 0.41 Rainfall to Runoff Ratio Based on Linear Regression 0.14 Page 145 of 199 2024 Water Quality and Quantity Monitoring Program 0.0 0.5 1.0 1.5 2.0 907.0 907.5 908.0 908.5 909.0 909.5 910.0 Monitoring Location # 7 (Bloomfield #1864) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) NWL = 909.0 High Water Level: 913.89' Page 146 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 8 (O'Leary's #600) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 5/29--5/31 930.07 929.97 0.10 43 0.028 5.56 0.56 6/1--6/2 930.33 930.10 0.23 27 0.101 5.56 1.27 6/4--6/8 930.33 930.04 0.29 75 0.046 5.56 1.61 6/8--6/11 930.04 929.94 0.10 68 0.018 5.56 0.56 6/11--6/12 929.95 929.92 0.03 21 0.017 5.56 0.16 6/13--6/15 930.05 929.95 0.10 55 0.021 5.56 0.53 6/16--6/17 930.58 930.27 0.31 23 0.161 5.56 1.71 6/18--6/18 930.46 930.33 0.13 17 0.095 5.56 0.75 6/19--6/20 930.50 930.28 0.23 37 0.074 5.56 1.26 6/22--6/22 930.63 930.47 0.16 8 0.242 5.56 0.90 6/22--6/27 930.65 930.09 0.56 119 0.057 5.56 3.12 6/28--6/28 930.43 930.33 0.09 10 0.112 5.56 0.52 6/29--7/1 930.28 930.12 0.16 62 0.031 5.56 0.90 7/2--7/4 930.15 930.08 0.07 49 0.016 5.56 0.37 7/5--7/7 930.55 930.24 0.31 39 0.094 5.56 1.71 7/7--7/14 930.24 930.00 0.24 165 0.018 5.56 1.34 7/14--7/15 930.05 930.03 0.02 26 0.012 5.56 0.14 7/15--7/21 930.08 929.92 0.16 139 0.014 5.56 0.88 7/21--7/22 930.32 930.17 0.15 27 0.065 5.56 0.82 7/23--7/28 930.43 930.01 0.42 128 0.039 5.56 2.32 7/29--7/31 930.05 930.00 0.06 55 0.012 5.56 0.32 8/1--8/3 930.29 930.11 0.19 52 0.043 5.56 1.04 8/4--8/5 930.22 930.15 0.07 27 0.030 5.56 0.38 8/5--8/15 930.77 930.01 0.76 219 0.041 5.56 4.20 8/15--8/16 930.46 930.24 0.22 35 0.075 5.56 1.22 8/17--8/22 930.22 930.04 0.19 114 0.020 5.56 1.05 8/22--8/23 930.10 930.08 0.02 15 0.013 5.56 0.09 8/23--8/26 930.08 930.02 0.07 74 0.011 5.56 0.36 8/27--8/29 930.71 930.23 0.48 48 0.119 5.56 2.66 8/29--9/4 930.97 930.10 0.87 135 0.078 5.56 4.85 9/4--9/14 930.10 929.94 0.17 235 0.008 5.56 0.92 9/14--9/19 929.98 929.90 0.08 114 0.008 5.56 0.43 9/19--10/24 929.90 929.53 0.37 831 0.005 5.56 2.06 sum = 41.00 * Evaporation and Infiltration rates were selected from periods of no rain. Range of Evaporation and Infiltration Rates (in/hr)0.005 0.242 Average Evaporation and Infiltration Rate (in/hr)0.052 Page 147 of 199 Weir Overflow Calculations for: Monitoring Location # 8 (O'Leary's #600) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Event No Outflow Start Time Pond Elev Outflow End Time Pond Elev Event Hours Weir Overflow Volume (ac-ft) 1 5/31/24 7:45 930.06 6/7/24 16:45 930.05 177 565329.18 2 6/15/24 15:45 930.06 7/11/24 20:45 930.05 629 2001650.29 3 7/21/24 11:45 930.33 7/27/24 10:45 930.05 143 457079.77 4 7/29/24 0:45 930.06 7/29/24 10:45 930.05 10 34846.65 5 7/31/24 18:45 930.23 8/12/24 21:45 930.05 291 927016.16 6 8/15/24 4:45 930.44 8/21/24 21:45 930.05 161 514131.41 7 8/22/24 15:45 930.09 8/25/24 3:45 930.05 60 193293.73 8 8/26/24 19:45 930.06 9/7/24 7:45 930.05 276 880156.57 1747 5573503.8Total Outflow Volume Page 148 of 199 y = 0.282x R² = 0.964 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 8 (O'Leary's #600) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 149 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 8 (O'Leary's #600) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 1.486 929.97 930.58 14 0.0044 5.56 3.75 125.5 0.358 0.24 2-Jun 1.162 930.10 930.71 14 0.0044 5.56 3.76 125.5 0.360 0.31 4-Jun 0.429 930.21 930.33 4 0.0044 5.56 0.78 125.5 0.075 0.17 12-Jun 0.388 929.92 930.04 5 0.0044 5.56 0.80 125.5 0.076 0.20 12-Jun 0.046 930.02 930.05 2 0.0044 5.56 0.23 125.5 0.022 0.47 15-Jun 1.502 929.96 930.63 15 0.0044 5.56 4.13 125.5 0.394 0.26 17-Jun 1.185 930.27 930.85 5 0.0044 5.56 3.35 125.5 0.320 0.27 18-Jun 0.366 930.33 930.53 2 0.0044 5.56 1.15 125.5 0.110 0.30 21-Jun 1.288 930.25 930.69 23 0.0044 5.56 2.99 125.5 0.286 0.22 22-Jun 0.436 930.47 930.70 3 0.0044 5.56 1.39 125.5 0.133 0.30 27-Jun 0.676 930.09 930.46 10 0.0044 5.56 2.28 125.5 0.218 0.32 1-Jul 0.1 930.12 930.15 5 0.0044 5.56 0.30 125.5 0.029 0.29 4-Jul 1.081 930.08 930.57 12 0.0044 5.56 3.00 125.5 0.287 0.27 5-Jul 0.539 930.41 930.60 4 0.0044 5.56 1.15 125.5 0.110 0.20 14-Jul 0.13 930.00 930.05 3 0.0044 5.56 0.36 125.5 0.034 0.26 15-Jul 0.19 930.03 930.08 4 0.0044 5.56 0.40 125.5 0.038 0.20 21-Jul 0.673 929.92 930.34 3 0.0044 5.56 2.38 125.5 0.227 0.34 22-Jul 0.62 930.17 930.58 2 0.0044 5.56 2.29 125.5 0.219 0.35 28-Jul 0.173 930.00 930.06 3 0.0044 5.56 0.41 125.5 0.039 0.22 31-Jul 0.896 930.00 930.42 11 0.0044 5.56 2.60 125.5 0.249 0.28 3-Aug 0.227 930.11 930.22 2 0.0044 5.56 0.69 125.5 0.066 0.29 5-Aug 1.597 930.15 930.83 17 0.0044 5.56 4.18 125.5 0.400 0.25 15-Aug 0.887 930.01 930.48 3 0.0044 5.56 2.67 125.5 0.256 0.29 16-Aug 0.079 930.24 930.26 2 0.0044 5.56 0.14 125.5 0.013 0.17 17-Aug 0.028 930.22 930.24 1 0.0044 5.56 0.11 125.5 0.011 0.39 22-Aug 0.189 930.04 930.11 4 0.0044 5.56 0.50 125.5 0.048 0.25 26-Aug 0.641 930.02 930.52 3 0.0044 5.56 2.85 125.5 0.273 0.43 27-Aug 0.53 930.41 930.74 3 0.0044 5.56 1.92 125.5 0.184 0.35 29-Aug 1.411 930.23 931.23 10 0.0044 5.56 5.78 125.5 0.552 0.39 14-Sep 0.092 929.94 929.98 3 0.0044 5.56 0.30 125.5 0.029 0.31 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.17 0.47 Rainfall to Runoff Ratio Based on Linear Regression 0.28 Page 150 of 199 2024 Water Quality and Quantity Monitoring Program 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 928.0 928.5 929.0 929.5 930.0 930.5 931.0 931.5 Monitoring Location # 8 (O'Leary's #600) Surface Water Elevations & Rainfall Amounts Water Elevation (feet)Daily Rainfall (in.) Outlet Elevation = 929.7' High Water Elevation= 931.20' Page 151 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 9 (Wachter #2443) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 5/29--5/31 914.52 914.32 0.21 42 0.059 5.1 1.05 6/1--6/2 916.02 915.48 0.54 28 0.231 5.1 2.74 6/3--6/4 916.53 915.88 0.66 33 0.239 5.1 3.35 6/5--6/8 916.06 915.09 0.97 73 0.159 5.1 4.93 6/8--6/11 915.07 914.50 0.56 67 0.101 5.1 2.87 6/11--6/12 914.49 914.31 0.18 23 0.093 5.1 0.91 6/13--6/15 914.54 914.25 0.28 52 0.066 5.1 1.45 6/16--6/17 915.78 915.57 0.21 16 0.158 5.1 1.08 6/18--6/18 916.75 916.29 0.46 19 0.289 5.1 2.34 6/19--6/21 916.58 915.67 0.91 50 0.218 5.1 4.63 6/22--6/27 917.02 915.27 1.75 123 0.171 5.1 8.95 6/28--6/28 915.83 915.81 0.02 5 0.058 5.1 0.12 6/29--6/29 915.82 915.77 0.05 6 0.094 5.1 0.24 6/29--7/1 915.76 915.26 0.50 59 0.101 5.1 2.53 7/2--7/4 915.28 915.00 0.28 48 0.070 5.1 1.42 7/5--7/13 916.31 914.94 1.37 199 0.083 5.1 6.99 7/14--7/15 915.01 914.87 0.15 28 0.063 5.1 0.75 7/15--7/21 914.97 914.42 0.55 140 0.047 5.1 2.82 7/21--7/22 915.32 915.25 0.07 18 0.049 5.1 0.37 7/23--7/28 916.00 915.14 0.87 138 0.075 5.1 4.43 7/29--7/31 915.35 915.13 0.22 61 0.044 5.1 1.14 8/1--8/3 916.04 915.54 0.51 59 0.103 5.1 2.58 8/4--8/5 915.79 915.62 0.16 27 0.072 5.1 0.83 8/6--8/15 916.84 915.17 1.66 216 0.092 5.1 8.48 8/15--8/16 915.91 915.85 0.06 21 0.035 5.1 0.32 8/17--8/22 915.78 915.28 0.50 113 0.053 5.1 2.53 8/22--8/23 915.37 915.30 0.07 15 0.053 5.1 0.34 8/23--8/26 915.30 915.06 0.23 72 0.039 5.1 1.18 8/27--8/29 916.59 916.03 0.56 53 0.127 5.1 2.85 8/30--9/5 917.95 915.70 2.24 146 0.184 5.1 11.44 9/5--9/14 915.71 914.88 0.83 221 0.045 5.1 4.24 9/14--9/19 914.92 914.59 0.32 119 0.033 5.1 1.66 9/19--10/24 914.63 913.08 1.55 834 0.022 5.1 7.93 SUM = 99.48 * Evaporation and Infiltration rates were selected from periods of no rain. Range of Evaporation and Infiltration Rates (in/hr)0.022 0.289 Average Evaporation and Infiltration Rate (in/hr)0.101 Page 152 of 199 y = 0.161x R² = 0.977 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0 0.5 1 1.5 2 2.5 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 9 (Wachter #2443) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 153 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 9 (Wachter #2443) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 2.074 914.32 916.08 25 0.0084 5.10 10.07 384.8 0.314 0.15 2-Jun 0.357 915.48 915.67 4 0.0084 5.10 1.14 384.8 0.036 0.10 3-Jun 0.932 915.54 916.54 4 0.0084 5.10 5.29 384.8 0.165 0.18 4-Jun 0.475 915.88 916.07 5 0.0084 5.10 1.21 384.8 0.038 0.08 8-Jun 0.048 915.09 915.10 3 0.0084 5.10 0.17 384.8 0.005 0.11 11-Jun 0.072 914.50 914.54 4 0.0084 5.10 0.37 384.8 0.011 0.16 12-Jun 0.388 914.31 914.55 4 0.0084 5.10 1.38 384.8 0.043 0.11 12-Jun 0.066 914.48 914.54 4 0.0084 5.10 0.48 384.8 0.015 0.23 15-Jun 1.586 914.25 915.80 28 0.0084 5.10 9.08 384.8 0.283 0.18 17-Jun 1.285 915.57 916.83 10 0.0084 5.10 6.86 384.8 0.214 0.17 18-Jun 0.406 916.29 916.59 2 0.0084 5.10 1.59 384.8 0.049 0.12 21-Jun 1.834 915.67 917.02 41 0.0084 5.10 8.63 384.8 0.269 0.15 27-Jun 0.696 915.27 915.86 14 0.0084 5.10 3.61 384.8 0.113 0.16 1-Jul 0.1 915.26 915.28 8 0.0084 5.10 0.45 384.8 0.014 0.14 4-Jul 1.706 915.00 916.32 30 0.0084 5.10 8.04 384.8 0.251 0.15 13-Jul 0.13 914.94 915.03 4 0.0084 5.10 0.63 384.8 0.020 0.15 15-Jul 0.19 914.87 914.98 4 0.0084 5.10 0.73 384.8 0.023 0.12 21-Jul 0.705 914.42 915.33 12 0.0084 5.10 5.16 384.8 0.161 0.23 22-Jul 0.692 915.25 916.02 9 0.0084 5.10 4.28 384.8 0.134 0.19 28-Jul 0.173 915.14 915.39 6 0.0084 5.10 1.54 384.8 0.048 0.28 31-Jul 0.908 915.13 916.05 17 0.0084 5.10 5.44 384.8 0.170 0.19 3-Aug 0.304 915.54 915.79 4 0.0084 5.10 1.44 384.8 0.045 0.15 5-Aug 1.702 915.62 916.91 21 0.0084 5.10 7.44 384.8 0.232 0.14 15-Aug 0.945 915.17 915.93 14 0.0084 5.10 4.43 384.8 0.138 0.15 22-Aug 0.189 915.28 915.37 3 0.0084 5.10 0.63 384.8 0.020 0.10 23-Aug 0.044 915.30 915.32 2 0.0084 5.10 0.20 384.8 0.006 0.14 26-Aug 1.317 915.02 916.62 21 0.0084 5.10 9.08 384.8 0.283 0.22 29-Aug 1.86 916.03 917.98 7 0.0084 5.10 10.25 384.8 0.320 0.17 14-Sep 0.092 914.88 914.93 3 0.0084 5.10 0.38 384.8 0.012 0.13 19-Sep 0.014 914.59 914.68 2 0.0084 5.10 0.53 384.8 0.017 1.18 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.08 1.18 Rainfall to Runoff Ratio Based on Linear Regression 0.16 Page 154 of 199 2024 Water Quality Quantity Monitoring Program 0 0.5 1 1.5 2 909.0 909.5 910.0 910.5 911.0 911.5 912.0 912.5 913.0 913.5 914.0 914.5 915.0 915.5 916.0 916.5 917.0 917.5 918.0 918.5 919.0 Monitoring Location # 9 (Wachter #2443) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) NWL = 906' Pumping Required = 916' 5- Day Monitoring Required = 910' OHWL = 911' Page 155 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 10 (Shannon #614) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 5/29--5/31 919.67 919.64 0.03 42 0.009 3.17 0.10 6/1--6/2 920.44 920.27 0.17 28 0.073 3.17 0.54 6/3--6/4 920.70 920.49 0.21 33 0.078 3.17 0.68 6/5--6/8 920.56 920.08 0.48 73 0.079 3.17 1.52 6/8--6/11 920.10 919.74 0.36 69 0.063 3.17 1.16 6/11--6/12 919.70 919.50 0.20 23 0.103 3.17 0.63 6/13--6/15 919.65 919.40 0.25 54 0.057 3.17 0.81 6/18--6/18 920.62 920.54 0.09 17 0.061 3.17 0.27 6/19--6/21 920.68 920.37 0.31 48 0.077 3.17 0.98 6/22--6/27 920.93 920.31 0.62 118 0.063 3.17 1.96 6/29--7/1 920.53 920.27 0.25 69 0.044 3.17 0.80 7/2--7/4 920.27 920.10 0.17 50 0.041 3.17 0.54 7/5--7/7 920.68 920.61 0.07 31 0.027 3.17 0.22 7/7--7/9 920.62 920.40 0.22 61 0.043 3.17 0.69 7/9--7/15 920.37 920.01 0.36 129 0.033 3.17 1.13 7/15--7/21 920.06 919.62 0.44 141 0.038 3.17 1.41 7/23--7/28 920.18 919.82 0.36 132 0.033 3.17 1.14 7/29--7/31 919.88 919.73 0.15 54 0.034 3.17 0.48 8/1--8/3 920.03 919.84 0.19 58 0.040 3.17 0.61 8/4--8/5 920.03 919.93 0.10 23 0.052 3.17 0.32 8/6--8/15 920.60 919.98 0.62 209 0.035 3.17 1.96 8/16--8/17 920.37 920.35 0.02 11 0.025 3.17 0.07 8/17--8/22 920.35 920.11 0.24 115 0.025 3.17 0.77 8/22--8/23 920.14 920.11 0.02 13 0.021 3.17 0.07 8/23--8/26 920.11 919.94 0.16 76 0.026 3.17 0.52 8/27--8/29 920.55 920.46 0.09 55 0.019 3.17 0.27 8/30--9/5 921.30 920.93 0.37 146 0.030 3.17 1.17 9/5--9/18 920.93 920.81 0.12 322 0.005 3.17 0.38 9/20--10/24 921.31 920.04 1.27 817 0.019 3.17 4.02 SUM=25.21 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.005 0.103 Average Evaporation and Infiltration Rate (in/hr)0.043 Page 156 of 199 y = 0.087x R² = 0.973 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0 0.5 1 1.5 2 2.5 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 10 (Shannon #614) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 157 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 10 (Shannon #614) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac)Runoff (in)Rainfall / Runoff Ratio 31-May 2.066 919.64 920.45 22 0.0000 3.17 2.57 176.8 0.174 0.08 2-Jun 1.297 920.27 920.73 15 0.0000 3.17 1.47 176.8 0.100 0.08 4-Jun 0.475 920.49 920.56 5 0.0000 3.17 0.24 176.8 0.016 0.03 8-Jun 0.064 920.08 920.10 6 0.0000 3.17 0.05 176.8 0.003 0.05 11-Jun 0.072 919.70 919.74 4 0.0000 3.17 0.14 176.8 0.009 0.13 12-Jun 0.262 919.50 919.73 2 0.0000 3.17 0.73 176.8 0.049 0.19 12-Jun 0.066 919.62 919.65 3 0.0000 3.17 0.10 176.8 0.007 0.11 15-Jun 1.586 919.40 920.13 32 0.0000 3.17 2.33 176.8 0.158 0.10 17-Jun 1.051 920.08 920.54 3 0.0000 3.17 1.47 176.8 0.100 0.09 17-Jun 0.146 920.57 920.64 9 0.0000 3.17 0.22 176.8 0.015 0.10 18-Jun 0.406 920.54 920.71 3 0.0000 3.17 0.56 176.8 0.038 0.09 21-Jun 1.362 920.37 920.80 25 0.0000 3.17 1.36 176.8 0.092 0.07 22-Jun 0.436 920.76 920.96 2 0.0000 3.17 0.63 176.8 0.043 0.10 27-Jun 0.728 920.31 920.51 17 0.0000 3.17 0.64 176.8 0.043 0.06 28-Jun 0.07 920.49 920.54 5 0.0000 3.17 0.14 176.8 0.009 0.14 4-Jul 1.714 920.10 920.70 34 0.0000 3.17 1.91 176.8 0.130 0.08 9-Jul 0.006 920.38 920.41 3 0.0000 3.17 0.10 176.8 0.006 1.08 15-Jul 0.19 919.98 920.06 4 0.0000 3.17 0.26 176.8 0.017 0.09 21-Jul 0.673 919.62 919.91 3 0.0000 3.17 0.94 176.8 0.064 0.09 22-Jul 0.686 919.77 920.17 5 0.0000 3.17 1.26 176.8 0.085 0.12 28-Jul 0.185 919.82 919.92 10 0.0000 3.17 0.32 176.8 0.022 0.12 31-Jul 0.908 919.73 920.03 18 0.0000 3.17 0.95 176.8 0.065 0.07 3-Aug 0.304 919.84 920.03 5 0.0000 3.17 0.60 176.8 0.041 0.13 5-Aug 1.702 919.93 920.62 30 0.0000 3.17 2.20 176.8 0.149 0.09 15-Aug 0.945 919.98 920.37 4 0.0000 3.17 1.25 176.8 0.085 0.09 16-Aug 0.079 920.33 920.37 2 0.0000 3.17 0.14 176.8 0.009 0.12 17-Aug 0.089 920.34 920.37 2 0.0000 3.17 0.09 176.8 0.006 0.07 22-Aug 0.189 920.08 920.16 4 0.0000 3.17 0.24 176.8 0.016 0.09 26-Aug 1.317 919.94 920.56 15 0.0000 3.17 1.94 176.8 0.132 0.10 29-Aug 1.86 920.46 921.32 9 0.0000 3.17 2.73 176.8 0.185 0.10 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.03 1.08 Rainfall to Runoff Ratio Based on Linear Regression 0.09 Page 158 of 199 2024 Water Quality Quantity Monitoring Program 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 917.0 917.5 918.0 918.5 919.0 919.5 920.0 920.5 921.0 921.5 922.0 Da i l y R a i n f a l l ( i n c h e s ) Monitoring Location # 10 (Shannon# 614) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) Outlet Elevation = None HWL / 5-Day Monitoring Required = 920.2' Page 159 of 199 Infiltration and Evaporation Rates for: Monitoring Location # 11 (#0232) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Period of no Rainfall Beginning Elevation (ft) Ending Elevation (ft) Change in Elevation (ft) Duration of Period (hr) Evaporation & Infiltration Rate* (in/hr) Pond Area (ac) Overall Volume Reduction within Period (ac-ft) 6/1--6/2 913.91 913.15 0.77 28 0.329 0.58 0.44 6/3--6/4 915.03 913.35 1.69 31 0.653 0.58 0.98 6/4--6/8 913.96 912.70 1.26 75 0.202 0.58 0.73 6/8--6/11 912.68 912.31 0.37 68 0.065 0.58 0.21 6/11--6/12 912.36 912.26 0.10 24 0.048 0.58 0.06 6/12--6/13 912.78 912.71 0.07 10 0.082 0.58 0.04 6/13--6/15 912.70 912.41 0.29 55 0.063 0.58 0.17 6/16--6/17 914.64 913.27 1.36 25 0.654 0.58 0.79 6/18--6/18 913.69 913.21 0.48 17 0.340 0.58 0.28 6/19--6/20 913.78 913.02 0.76 37 0.246 0.58 0.44 6/20--6/21 913.01 912.91 0.09 11 0.101 0.58 0.05 6/22--6/27 915.20 912.67 2.53 120 0.253 0.58 1.47 6/28--6/28 913.90 913.59 0.31 11 0.336 0.58 0.18 6/28--7/1 913.57 912.86 0.71 71 0.120 0.58 0.41 7/2--7/4 912.94 912.71 0.23 50 0.055 0.58 0.13 7/4--7/5 913.63 913.52 0.11 7 0.187 0.58 0.06 7/5--7/7 913.83 913.33 0.49 31 0.190 0.58 0.29 7/7--7/9 913.35 912.91 0.44 61 0.086 0.58 0.25 7/9--7/13 912.94 912.57 0.37 91 0.049 0.58 0.21 7/14--7/15 912.95 912.83 0.12 28 0.051 0.58 0.07 7/15--7/21 912.92 912.46 0.46 142 0.039 0.58 0.27 7/21--7/22 913.49 913.03 0.46 29 0.190 0.58 0.27 7/22--7/28 914.58 912.67 1.92 146 0.158 0.58 1.11 7/29--7/31 914.25 912.99 1.26 56 0.269 0.58 0.73 8/1--8/3 914.14 913.22 0.92 52 0.213 0.58 0.54 8/4--8/5 913.44 913.24 0.20 27 0.088 0.58 0.11 8/5--8/15 915.30 912.76 2.54 219 0.139 0.58 1.48 8/15--8/16 914.00 913.33 0.66 27 0.295 0.58 0.39 8/17--8/22 913.32 912.72 0.60 117 0.062 0.58 0.35 8/22--8/23 912.87 912.81 0.05 16 0.040 0.58 0.03 8/23--8/26 912.80 912.61 0.20 79 0.030 0.58 0.11 8/27--8/29 915.13 913.19 1.94 57 0.408 0.58 1.13 8/29--8/31 915.77 913.57 2.20 48 0.549 0.58 1.27 sum = 15.05 * Evaporation and Infiltration rates were selected from periods on no rain. Range of Evaporation and Infiltration Rates (in/hr)0.030 0.654 Average Evaporation and Infiltration Rate (in/hr)0.200 Page 160 of 199 y = 0.227x R² = 0.917 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 Ru n o f f ( i n ) Rainfall (in) Monitoring Location # 11 (0232) Rainfall to Runoff Relationship Linear (Rainfall to Runoff Ratio) Page 161 of 199 Rainfall to Runoff Ratio Data for: Monitoring Location # 11 (#0232) 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Rain Event Rainfall Event (in) Start Elevation (ft) End Elevation (ft) Duration of Period (hr) Hourly Average E/I (ft/hr)* Pond Area (ac) Runoff Inflow Volume* (ac-ft) Watershed Area (ac) Runoff (in) Rainfall / Runoff Ratio 31-May 0.268 912.73 913.21 2 0.0166 0.58 0.30 49.9 0.073 0.27 31-May 1.572 913.18 914.69 11 0.0166 0.58 0.99 49.9 0.237 0.15 2-Jun 0.351 913.15 913.35 3 0.0166 0.58 0.15 49.9 0.036 0.10 3-Jun 0.94 913.28 915.15 7 0.0166 0.58 1.15 49.9 0.277 0.29 4-Jun 0.429 913.35 914.03 4 0.0166 0.58 0.44 49.9 0.105 0.24 11-Jun 0.072 912.31 912.36 2 0.0166 0.58 0.05 49.9 0.012 0.16 12-Jun 0.388 912.26 912.79 4 0.0166 0.58 0.34 49.9 0.083 0.21 15-Jun 1.442 912.41 914.64 13 0.0166 0.58 1.42 49.9 0.342 0.24 17-Jun 1.185 913.27 914.66 5 0.0166 0.58 0.85 49.9 0.205 0.17 18-Jun 0.406 913.21 913.82 3 0.0166 0.58 0.39 49.9 0.093 0.23 21-Jun 1.83 912.91 915.31 37 0.0166 0.58 1.75 49.9 0.420 0.23 27-Jun 0.664 912.65 913.92 8 0.0166 0.58 0.82 49.9 0.197 0.30 1-Jul 0.1 912.86 912.94 6 0.0166 0.58 0.11 49.9 0.026 0.26 4-Jul 1.081 912.71 913.66 11 0.0166 0.58 0.66 49.9 0.158 0.15 5-Jul 0.591 913.52 913.88 13 0.0166 0.58 0.33 49.9 0.079 0.13 7-Jul 0.016 913.33 913.35 1 0.0166 0.58 0.02 49.9 0.005 0.32 9-Jul 0.006 912.91 912.94 2 0.0166 0.58 0.03 49.9 0.008 1.38 13-Jul 0.142 912.57 912.95 13 0.0166 0.58 0.35 49.9 0.084 0.59 15-Jul 0.19 912.83 912.93 3 0.0166 0.58 0.09 49.9 0.021 0.11 21-Jul 0.334 912.46 913.49 2 0.0166 0.58 0.62 49.9 0.149 0.45 22-Jul 0.62 913.03 914.70 2 0.0166 0.58 0.99 49.9 0.238 0.38 31-Jul 0.667 912.99 915.28 9 0.0166 0.58 1.41 49.9 0.340 0.51 3-Aug 0.227 913.22 913.45 2 0.0166 0.58 0.15 49.9 0.037 0.16 5-Aug 1.553 913.24 915.32 17 0.0166 0.58 1.37 49.9 0.330 0.21 15-Aug 0.887 912.75 914.01 3 0.0166 0.58 0.76 49.9 0.182 0.20 16-Aug 0.212 913.30 913.33 27 0.0166 0.58 0.28 49.9 0.067 0.32 22-Aug 0.189 912.72 912.87 2 0.0166 0.58 0.11 49.9 0.026 0.14 26-Aug 1.297 912.61 915.25 11 0.0166 0.58 1.64 49.9 0.395 0.30 29-Aug 1.792 913.19 915.96 5 0.0166 0.58 1.66 49.9 0.399 0.22 * E/I = Evaporation and infiltration rate included in volume calculation Range of Rainfall to Runoff Ratios 0.10 1.38 Rainfall to Runoff Ratio Based on Linear Regression 0.23 Page 162 of 199 2022 Water Quality Quantity Monitoring Program 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 911.0 911.5 912.0 912.5 913.0 913.5 914.0 914.5 915.0 915.5 916.0 916.5 917.0 917.5 918.0 918.5 919.0 Da i l y R a i n f a l l ( i n c h e s ) Monitoring Location #11 (#0230) Surface Water Elevations & Rainfall Amounts Water Elevation (feet) Daily Rainfall (in.) NWL = 918.5'3- cell pond system outlet elevation = 923' High Water Elevation = 923' Page 163 of 199 Rosemount Water Quality Monitoring Program – 2022 City of Rosemount, MN WSB Project No. 021143-000 Attachment C Attachment C – Water Quality Data C.1 Long-Term Water Quality Tables C.2 Long-Term Water Quality Box and Whisker Charts C.3 Chloride Charts Page 164 of 199 WSB Project No. 025921-000 Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.19 0.080 6 7/16/2014 0.28 0.020 9 8/11/2014 0.09 0.040 6 9/17/2014 0.17 0.020 7 10/28/2014 0.18 0.010 16 5/20/2015 0.20 0.130 3.0 7/14/2015 0.13 0.070 4.0 8/6/2015 0.13 0.020 6.0 8/25/2015 0.16 0.080 7.0 9/22/2015 0.15 0.100 6.0 10/29/2015 0.15 0.044 5.00 2/16/2016 0.12 0.070 2 19.5 3/16/2016 0.07 0.010 3 15.8 4/28/2016 0.08 0.070 2 34.7 5/26/2016 0.10 0.080 2 33.5 6/23/2016 0.30 0.190 27 20.7 7/16/2016 0.09 0.020 3 18.1 8/31/2016 0.11 0.020 3 11.1 9/27/2016 0.15 0.090 1 8.15 10/25/2016 0.20 0.100 1 8.4 4/28/2017 0.13 0.080 2 91.8 5/25/2017 0.08 0.010 1 56 6/21/2017 0.11 0.059 6 61.5 7/31/2017 0.22 0.020 24 20.4 8/30/2017 0.12 0.046 36 14.9 9/27/2017 0.10 0.026 4 15.9 10/31/2017 0.11 0.023 3 14.9 2/14/2018 1.03 0.329 41 66.1 3/14/2018 0.80 0.603 30 106 5/30/2018 0.19 0.020 15 62.3 6/27/2018 0.12 0.046 11 60 7/25/2018 0.06 0.020 6 49.6 8/29/2018 0.06 0.000 3 39.2 9/27/2018 0.01 0.039 4 25.3 10/29/2018 0.10 0.033 5 24 1/7/2019 0.16 0.072 7 37.1 3/11/2019 0.38 0.339 13 95.3 6/25/2019 0.09 0.029 4 61 7/17/2019 0.13 0.010 16 37.4 8/12/2019 0.12 0.029 8 33.3 9/17/2019 0.14 0.052 7 27.4 10/8/2019 0.07 0.075 1 24.1 2/12/2020 0.18 0.091 9 39.2 3/11/2020 0.18 0.072 27 277.0 7/7/2020 0.13 0.010 12 24.3 8/3/2020 0.06 0.000 5 21.9 9/9/2020 0.08 0.013 6 21.9 11/2/2020 0.10 0.000 10 23.9 2/22/2021 0.45 0.221 101 5780.0 3/16/2021 0.00 0.007 7 33.7 5/12/2021 0.09 0.000 0 53.5 6/24/2021 0.06 0.000 4 50.8 7/28/2021 0.03 0.010 0 53.8 8/31/2021 0.04 0.010 5 39.0 9/23/2021 0.05 0.007 10 38.2 10/25/2021 0.10 0.023 22 36.8 3/1/2022 0.93 0.635 57 58.0 3/23/2022 0.39 0.166 10 44.5 6/28/2022 0.18 0.000 12 45.9 7/28/2022 0.20 0.000 6 48.7 0.025 8/24/2022 0.17 0.000 10 42.9 0.025 9/21/2022 0.26 0.003 10 40.7 0.025 11/3/2022 0.18 0.039 5 44.9 0.025 2/8/2023 1.09 0.095 21 44.2 0.025 3/21/2023 0.18 0.049 8 151.0 0.439 5/4/2023 0.07 0.003 24 146.0 0.025 6/7/2023 0.09 0.000 5 15.1 0.025 7/10/2023 0.15 0.000 26 110.0 0.025 8/3/2023 0.13 0.000 31 0.025 9/21/2023 0.33 0.065 35 92.7 0.025 10/11/2023 0.26 0.049 31 0.025 2/20/2024 0.10 0.003 2 29.4 0.025 5/21/2024 0.14 0.225 16 8.7 0.025 7/2/2024 0.08 0.000 6 13.7 0.025 7/30/2024 0.00 0.000 5 13.5 0.025 8/20/2024 0.08 0.000 14 12.4 0.025 9/30/2024 0.19 0.026 2 11.3 0.025 10/24/2024 0.00 0.000 3 11.1 0.025 2024 Average 0.08 0.04 6.87 14.29 0.03 AVERAGE 0.18 0.06 11.81 133.42 0.05 MEDIAN 0.13 0.03 6.00 37.10 0.03 MAX 1.09 0.64 101.00 5780.00 0.44 MIN 0.00 0.00 0.00 8.15 0.03 STDEV 0.20 0.11 14.97 712.57 0.09 75TH PERCENTILE 0.18 0.07 14.55 54.90 0.03 25TH PERCENTILE 0.09 0.01 3.60 19.95 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Water Quality Sampling Results City of Rosemount, MN 2024 Water Quality and Quantity Monitoring Study Location 1 Page 165 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.18 0.0900 0 7/16/2014 0.40 0.0100 11 8/11/2014 0.04 0.0500 100 9/17/2014 0.23 0.0300 10 10/28/2014 0.07 0.0100 4 5/20/2015 0.06 0.0300 16.0 7/14/2015 0.13 0.0700 11.0 8/6/2015 0.07 0.0600 2.0 8/25/2015 0.14 0.0600 13.0 9/22/2015 0.24 0.0300 17.0 10/29/2015 0.05 0.0050 5.0 4/28/2016 0.10 0.0300 6 29.0 5/26/2016 0.18 0.0400 12 38.2 6/23/2016 0.24 0.0100 30 16.0 7/16/2016 0.17 0.0200 17 11.4 8/31/2016 0.19 0.0100 17 5.6 9/27/2016 0.16 0.0400 8 13.1 10/24/2016 0.10 0.0100 6 10.2 4/28/2017 0.13 0.0800 8 91.8 5/25/2017 0.02 0.0293 8 52.0 6/21/2017 0.22 0.0000 15 48.6 7/31/2017 0.15 0.0033 13 10.8 8/30/2017 0.01 0.0000 13 6.8 9/27/2017 0.09 0.0261 17 20.1 10/31/2017 0.13 0.0098 13 15.0 5/30/2018 0.13 0.0000 6 73.3 6/27/2018 0.09 0.0033 2 36.2 7/25/2018 0.04 0.0098 6 28.3 8/29/2018 0.08 0.0228 8 13.6 9/27/2018 0.04 0.0130 5 17.3 10/29/2018 0.09 0.0130 9 13.2 6/25/2019 0.05 0.0098 4 48.0 7/17/2019 0.09 0.0000 12 18.4 8/12/2019 0.13 0.0065 11 15.9 9/17/2019 0.09 0.0326 13 18.0 10/8/2019 0.07 0.0358 9 22.6 7/6/2020 0.00 0.0000 5 16.2 8/3/2020 0.05 0.0000 6 10.7 9/9/2020 0.11 0.0163 11 9.3 11/2/2020 0.10 0.0000 10 8.1 5/12/2021 0.19 0.1240 3 541.0 6/24/2021 0.14 0.0521 42 121.0 7/28/2021 0.81 0.1430 5450 84.6 8/31/2021 0.11 0.0000 19 42.8 9/23/2021 0.04 0.0000 7 41.1 10/25/2021 0.00 0.0000 21 50.3 6/28/2022 0.19 0.0000 19 55.4 7/28/2022 0.21 0.0000 27 49.2 0.025 8/24/2022 0.25 0.0000 39 34.0 0.025 9/21/2022 0.28 0.0065 21 39.3 0.025 11/3/2022 0.23 0.0228 89 40.8 0.025 5/4/2023 0.08 0.003 14 161.0 0.025 6/7/2023 0.12 0.007 5 144.0 0.025 7/10/2023 0.02 0.013 1 110.0 0.025 8/3/2023 0.12 0.000 4 0.025 9/21/2023 0.10 0.007 3 77.0 0.025 10/11/2023 0.08 0.003 9 0.025 4/2/2024 0.09 0.003 13 29.4 0.025 5/21/2024 0.12 0.020 13 9.1 0.025 7/2/2024 0.03 0.000 3 10.8 0.025 7/30/2024 0.00 0.000 13 7.9 0.025 8/20/2024 0.13 0.000 15 5.8 0.025 9/30/2024 0.27 0.000 21 24.1 0.025 10/24/2024 0.09 0.000 21 24.9 0.025 2024 Average 0.11 0.00 14.03 16.00 0.03 AVERAGE 0.13 0.02 99.36 47.47 0.03 MEDIAN 0.11 0.01 11.00 24.90 0.03 MAX 0.81 0.14 5450.00 541.00 0.03 MIN 0.00 0.00 0.00 5.62 0.03 STDEV 0.12 0.03 679.65 79.01 0.00 75TH PERCENTILE 0.18 0.03 17.00 49.20 0.03 25TH PERCENTILE 0.07 0.00 6.00 13.10 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 2 Page 166 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.10 0.100 1 7/16/2014 0.18 0.050 2 8/11/2014 0.33 0.110 14 9/17/2014 0.21 0.030 10 10/28/2014 0.15 0.010 1 5/20/2015 0.20 0.090 6.0 7/14/2015 0.20 0.160 2.0 8/6/2015 0.35 0.100 30.0 8/25/2015 0.15 0.110 7.0 9/22/2015 0.24 0.090 13.0 10/29/2015 0.26 0.160 10.0 4/28/2016 0.19 0.050 13 53.9 5/26/2016 0.47 0.050 26 19.3 6/23/2016 0.41 0.170 3 6.5 7/16/2016 0.19 0.100 6 4.1 8/31/2016 0.14 0.100 10 6.9 9/27/2016 0.25 0.010 8 9.3 10/24/2016 0.36 0.030 14 7.2 4/28/2017 0.06 0.020 8 109.6 5/25/2017 0.05 0.003 3 13.2 6/21/2017 0.22 0.036 9 16.0 7/31/2017 0.13 0.016 8 7.4 8/30/2017 0.07 0.000 4 7.7 9/27/2017 0.14 0.020 1 8.0 10/30/2017 0.24 0.055 6 21.5 5/30/2018 0.39 0.052 55 32.0 6/27/2018 0.13 0.078 2 14.8 7/25/2018 0.03 0.020 5 13.6 8/29/2018 0.14 0.068 17 6.6 9/27/2018 0.98 0.065 3 14.0 10/29/2018 0.21 0.065 10 15.0 6/25/2019 0.19 0.104 3 24.0 7/17/2019 0.09 0.085 3 4.6 8/12/2019 0.18 0.055 7 12.7 9/17/2019 0.09 0.085 2 4.1 10/8/2019 0.09 0.081 1 11.4 7/6/2020 0.06 0.016 4 11.1 8/3/2020 0.08 0.000 4 6.8 9/9/2020 0.16 0.052 9 8.8 11/2/2020 0.32 0.215 7 27.1 5/12/2021 0.13 0.033 7 204.0 6/24/2021 0.20 0.046 7 56.8 7/28/2021 0.16 0.016 10 25.9 8/31/2021 0.12 0.013 7 4.5 9/23/2021 0.14 0.049 7 16.2 10/25/2021 0.05 0.000 5 8.7 6/28/2022 0.30 0.065 5 57.0 7/28/2022 0.18 0.000 10 22.2 0.025 8/24/2022 0.10 0.000 11 6.5 0.025 9/21/2022 0.21 0.000 1 49.6 0.025 11/3/2022 0.34 0.065 22 65.0 0.025 5/4/2023 0.03 0.007 6 425.0 0.401 6/7/2023 0.16 0.000 4 321.0 0.025 7/10/2023 0.23 0.134 6 80.1 0.025 8/3/2023 0.15 0.039 4 0.025 9/21/2023 0.23 0.059 3 52.4 0.025 10/11/2023 0.16 0.062 2 0.025 5/21/2024 0.17 0.072 30 4.9 0.08 7/2/2024 0.05 0.013 9 14.1 0.025 7/30/2024 0.10 0.013 7 10.8 0.025 8/20/2024 0.26 0.023 54 9.0 0.025 9/30/2024 0.19 0.124 21 45.7 0.025 10/24/2024 0.09 0.046 5 35.9 0.025 2024 Average 0.14 0.05 20.80 20.07 0.03 AVERAGE 0.19 0.06 9.31 40.24 0.05 MEDIAN 0.17 0.05 6.70 14.05 0.03 MAX 0.98 0.22 55.00 425.00 0.40 MIN 0.03 0.00 0.50 4.06 0.03 STDEV 0.14 0.05 10.48 77.24 0.09 75TH PERCENTILE 0.23 0.08 10.00 38.35 0.03 25TH PERCENTILE 0.10 0.02 3.00 7.64 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 3 Page 167 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.10 0.020 8 7/16/2014 0.07 0.000 8 8/11/2014 0.15 0.010 22 9/19/2014 0.16 0.000 16 10/28/2014 0.07 0.000 13 5/20/2015 0.07 0.020 15.0 7/14/2015 0.08 0.020 9.0 8/6/2015 0.13 0.040 18.0 8/25/2015 0.13 0.060 10.0 9/22/2015 0.11 0.010 17.0 10/29/2015 0.07 0.005 14.0 4/28/2016 0.07 0.010 10 59.6 5/26/2016 0.12 0.010 15 40.5 6/23/2016 0.08 0.010 2 37.4 7/16/2016 0.06 0.010 13 18.4 8/31/2016 0.02 0.010 15 16.0 9/27/2016 0.15 0.150 3 33.3 10/24/2016 0.07 0.010 3 33.6 4/28/2017 0.02 0.020 4 78.4 5/25/2017 0.06 0.000 3 59.2 6/21/2017 0.08 0.003 3 43.4 7/31/2017 0.08 0.007 6 38.1 8/30/2017 0.08 0.000 4 36.4 9/27/2017 0.04 0.013 5 85.5 10/31/2017 0.05 0.020 2 37.3 5/30/2018 0.11 0.000 129 64.9 6/27/2018 0.19 0.003 5 45.7 7/25/2018 0.07 0.020 17 35.8 8/29/2018 0.07 0.013 11 18.7 9/27/2018 0.07 0.016 11 19.8 10/29/2018 0.07 0.003 10 22.1 6/25/2019 0.02 0.003 3 49.0 7/17/2019 0.03 0.016 4 31.7 8/12/2019 0.05 0.020 5 38.7 9/17/2019 0.05 0.016 4 31.9 10/8/2019 0.01 0.010 3 28.0 7/6/2020 0.00 0.000 4 40.2 8/3/2020 0.00 0.000 5 40.1 9/9/2020 0.07 0.000 7 22.1 11/2/2020 0.07 0.000 4 30.7 5/12/2021 0.07 0.000 8 154.0 6/24/2021 0.10 0.026 24 90.2 7/28/2021 0.03 0.003 4 56.6 8/31/2021 0.00 0.003 3 16.7 9/23/2021 0.01 0.000 1 9.4 10/25/2021 0.00 0.000 1 6.9 6/28/2022 0.32 0.016 69 53.8 7/28/2022 0.18 0.000 25 36.6 0.025 8/24/2022 0.16 0.000 37 13.8 0.025 9/21/2022 0.15 0.000 23 11.0 0.025 11/3/2022 0.17 0.033 21 13.1 0.025 5/4/2023 0.00 0.000 6 169.0 0.025 6/7/2023 0.06 0.000 4 218.0 0.025 7/10/2023 0.05 0.010 4 184.0 0.025 8/3/2023 0.14 0.000 20 0.025 9/21/2023 0.20 0.036 27 43.8 0.025 10/11/2023 0.14 0.039 16 0.025 5/21/2024 0.18 0.010 23 10.3 0.025 7/2/2024 0.04 0.000 3 16.7 0.025 7/30/2024 0.00 0.000 3 12.9 0.025 8/20/2024 0.11 0.020 12 8.8 0.0512 9/30/2024 0.07 0.000 8 10.2 0.025 10/24/2024 0.04 0.000 5 9.9 0.025 2024 Average 0.07 0.00 8.93 11.47 0.03 AVERAGE 0.08 0.01 12.77 45.64 0.03 MEDIAN 0.07 0.01 8.00 36.10 0.03 MAX 0.32 0.15 129.00 218.00 0.05 MIN 0.00 0.00 0.80 6.94 0.03 STDEV 0.06 0.02 18.30 45.47 0.01 75TH PERCENTILE 0.12 0.02 15.80 50.20 0.03 25TH PERCENTILE 0.04 0.00 4.00 16.70 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 4 Page 168 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.10 0.020 10 7/16/2014 0.16 0.000 11 8/11/2014 0.08 0.010 19 9/17/2014 0.20 0.000 24 10/28/2014 0.14 0.040 15 5/20/2015 0.26 0.070 27.0 7/14/2015 0.23 0.050 12.0 8/6/2015 0.14 0.030 16.0 8/25/2015 0.20 0.070 19.0 9/22/2015 0.14 0.010 18.0 10/29/2015 0.12 0.005 12.0 2/16/2016 0.08 0.010 15 48.4 3/16/2016 0.07 0.010 9 64.6 4/28/2016 0.07 0.010 10 45.2 5/26/2016 0.07 0.010 20 33.6 6/23/2016 0.13 0.010 6 20.6 7/16/2016 0.14 0.010 18 10.7 8/31/2016 0.20 0.010 19 5.5 9/27/2016 0.15 0.040 6 2.5 10/24/2016 0.07 0.010 4 38.0 4/28/2017 0.02 0.020 8 98.4 5/25/2017 0.07 0.000 2 40.4 6/21/2017 0.07 0.020 2 41.8 7/31/2017 0.05 0.010 2 34.8 8/30/2017 0.05 0.000 1 27.9 9/27/2017 0.08 0.075 4 27.3 10/30/2017 0.07 0.023 2 26.4 2/14/2018 0.73 0.401 29 109.0 3/14/2018 0.71 0.570 10 176.0 5/30/2018 0.13 0.000 7 98.6 6/27/2018 0.13 0.020 1 55.8 7/25/2018 0.07 0.020 11 44.3 8/29/2018 0.02 0.013 12 28.4 9/27/2018 0.07 0.013 5 25.1 10/29/2018 0.07 0.010 7 33.5 1/7/2019 0.07 0.033 3 49.3 3/11/2019 0.32 0.283 17 336.0 6/25/2019 0.03 0.016 2 48.0 7/17/2019 0.04 0.020 4 27.6 8/12/2019 0.09 0.020 12 31.6 9/17/2019 0.07 0.016 3 23.6 10/8/2019 0.02 0.007 2 25.8 2/12/2020 0.12 0.013 6 131.0 3/11/2020 0.32 0.241 5 52.0 7/6/2020 0.00 0.000 3 59.0 8/3/2020 0.03 0.000 8 26.9 9/9/2020 0.19 0.020 14 18.0 11/2/2020 0.13 0.000 11 16.1 2/22/2021 0.56 0.095 164 5080.0 3/16/2021 0.34 0.163 24 106.0 5/12/2021 0.14 0.000 2 145.0 6/24/2021 0.11 0.000 4.8 98.7 7/28/2021 0.05 0.000 5.7 76.6 8/31/2021 0.11 0.000 24 30.3 9/23/2021 0.14 0.000 14 20.5 10/25/2021 0.02 0.000 10.6 17.7 3/1/2022 0.35 0.205 10 72.5 3/23/2022 0.40 0.277 5.6 48.1 6/28/2022 0.11 0.010 3.5 37.7 7/28/2022 0.12 0.000 17.3 30.7 0.025 8/24/2022 0.16 0.000 16.7 13.8 0.025 9/21/2022 0.18 0.000 13.3 13.9 0.025 11/3/2022 0.11 0.016 10.7 16.0 0.158 2/8/2023 0.28 0.137 14 132.0 0.059 3/21/2023 0.18 0.029 8 268.0 0.159 5/4/2023 0.09 0.000 14 232.0 0.025 6/7/2023 0.07 0.000 7 105.0 0.025 7/10/2023 0.10 0.000 8 127.0 0.025 8/3/2023 0.15 0.000 17 0.025 9/21/2023 0.17 0.013 22 48.6 0.025 10/11/2023 0.15 0.023 8 0.025 2/20/2024 0.07 0.026 4 33.9 0.085 4/2/2024 0.12 0.000 53 61.7 0.025 5/21/2024 0.16 0.003 16 5.3 0.025 7/2/2024 0.00 0.000 8 14.5 0.025 7/30/2024 0.05 0.000 17 9.2 0.025 8/26/2024 0.17 0.033 25 7.6 0.025 9/30/2024 0.16 0.010 26 11.3 0.025 10/24/2024 0.27 0.000 30 11.8 0.025 2024 Average 0.13 0.01 22.21 19.41 0.03 AVERAGE 0.15 0.04 13.73 134.20 0.04 MEDIAN 0.12 0.01 10.60 36.25 0.03 MAX 0.73 0.57 164.00 5080.00 0.16 MIN 0.00 0.00 1.00 2.47 0.03 STDEV 0.13 0.09 19.22 621.29 0.04 75TH PERCENTILE 0.17 0.03 16.90 73.53 0.03 25TH PERCENTILE 0.07 0.00 5.00 20.58 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 5 Page 169 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.12 0.020 8 7.2 7/16/2014 0.10 0.000 11 8/11/2014 0.29 0.180 19 20.0 9/17/2014 0.26 0.070 12 10/28/2014 0.11 0.070 15 9.3 5/20/2015 0.24 0.170 4 7/14/2015 0.21 0.150 5 8/6/2015 0.41 0.270 13 8/25/2015 0.23 0.190 7 9/22/2015 0.33 0.210 5 10/29/2015 0.23 0.091 12 2/16/2016 0.34 0.170 23 1080.0 3/16/2016 0.06 0.030 13 216.4 4/28/2016 0.23 0.010 14 150.8 5/26/2016 0.23 0.090 13 205.2 6/23/2016 0.19 0.080 1 13.6 7/16/2016 0.23 0.160 7 13.5 8/31/2016 0.17 0.050 8 16.8 9/27/2016 0.08 0.030 6 2.5 10/24/2016 0.01 0.040 9 3.4 4/28/2017 0.07 0.030 16 89.4 5/25/2017 0.10 0.042 20 28.9 6/21/2017 0.17 0.055 8 19.1 7/31/2017 0.19 0.117 7 11.4 8/30/2017 0.13 0.078 14 7.4 9/27/2017 0.50 0.277 17 11.8 10/31/2017 0.22 0.095 7 4.9 2/14/2018 0.95 0.603 25 618.0 3/14/2018 0.85 0.417 38 1830.0 5/30/2018 0.23 0.085 7 67.7 6/27/2018 0.30 0.195 15 37.1 7/25/2018 0.14 0.095 8 27.4 8/29/2018 0.16 0.124 5 9.1 9/27/2018 0.13 0.065 5 4.5 10/29/2018 0.44 0.055 30 4.8 1/7/2019 0.23 0.052 19 242.0 3/11/2019 0.30 0.241 209 2280.0 6/25/2019 0.15 0.085 4 24.0 7/17/2019 0.14 0.068 9 7.7 8/12/2019 0.45 0.290 16 16.0 9/17/2019 0.20 0.127 5 4.3 10/8/2019 0.15 0.081 12 3.9 2/12/2020 0.85 0.808 9 1580.0 3/11/2020 0.95 0.463 88 310.0 7/6/2020 0.06 0.078 3 59.8 8/3/2020 0.11 0.091 3 14.1 9/9/2020 0.31 0.166 17 9.9 11/2/2020 0.29 0.189 13 73.7 2/22/2021 0.94 0.257 252 7840.0 3/16/2021 0.14 0.081 10 2800.0 5/12/2021 0.16 0.068 2 257.0 6/24/2021 0.26 0.215 9 59.8 7/28/2021 0.19 0.029 20 78.4 8/31/2021 0.09 0.016 6 7.2 9/23/2021 0.13 0.046 16 6.9 10/25/2021 0.00 0.000 11 7.0 3/1/2022 0.64 0.404 11 996.0 3/23/2022 0.15 0.078 9 106.0 6/28/2022 0.42 0.202 10 42.4 7/28/2022 0.44 0.287 5 47.0 0.025 8/24/2022 0.24 0.176 2 30.7 0.025 9/21/2022 0.44 0.316 18 34.3 0.025 11/3/2022 0.54 0.420 19 41.2 0.025 2/8/2023 0.62 0.420 18 2620.0 0.025 3/21/2023 0.53 0.381 11 0.5 0.0675 5/4/2023 0.06 0.013 50 25.1 0.113 6/7/2023 0.33 0.143 6 94.0 0.025 7/10/2023 0.34 0.290 2 39.7 0.025 8/3/2023 0.59 0.186 3 0.025 9/21/2023 0.46 0.316 4 23.1 0.025 10/11/2023 0.23 0.085 12 0.0762 2/20/2024 0.01 0.000 2 236.0 0.025 4/2/2024 0.00 0.010 28 368.0 0.064 5/21/2024 0.43 0.257 114 11.3 0.025 7/2/2024 0.18 0.049 16 11.0 0.025 7/30/2024 0.36 0.244 45 19.9 0.025 8/26/2024 0.31 0.137 16 21.5 0.025 9/30/2024 0.21 0.098 32 25.6 0.025 10/24/2024 0.19 0.016 29 25.5 0.025 2024 Average 0.21 0.10 35.21 89.85 0.03 AVERAGE 0.28 0.16 20.53 362.47 0.04 MEDIAN 0.23 0.09 11.40 25.60 0.03 MAX 0.95 0.81 252.00 7840.00 0.11 MIN 0.00 0.00 1.00 0.50 0.03 STDEV 0.22 0.15 38.18 1093.31 0.02 75TH PERCENTILE 0.36 0.22 17.70 128.40 0.03 25TH PERCENTILE 0.14 0.06 6.40 10.47 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 6 Page 170 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.45 0.310 2 7/16/2014 0.49 0.050 174 8/11/2014 0.26 0.020 51 9/17/2014 0.15 0.000 9 10/28/2014 0.56 0.010 260 5/20/2015 0.19 0.120 2.0 7/14/2015 1.03 0.070 397.0 8/6/2015 0.19 0.030 22.0 8/25/2015 0.17 0.050 312.0 9/22/2015 0.07 0.010 9.0 10/29/2015 0.07 0.005 13.0 4/28/2016 0.06 0.010 7 46.3 5/26/2016 0.10 0.010 10 37.0 6/23/2016 1.03 0.040 29 7.0 7/16/2016 0.11 0.010 5 3.9 8/31/2016 0.12 0.010 8 4.7 9/27/2016 0.18 0.020 6 4.4 10/24/2016 0.46 0.010 2 5.8 4/28/2017 0.10 0.030 15 99.8 5/25/2017 0.09 0.029 4 15.3 6/21/2017 0.59 0.078 34 15.7 7/31/2017 0.15 0.026 17 5.6 8/30/2017 0.13 0.013 60 5.5 9/27/2017 0.02 0.020 51 8.4 10/31/2017 0.04 0.003 3 8.2 2/14/2018 1.59 0.762 353 350.0 3/14/2018 1.28 0.612 94 198.0 5/30/2018 0.20 0.000 4 80.4 6/27/2018 0.23 0.062 14 26.4 7/25/2018 0.57 0.160 157 28.8 8/29/2018 0.38 0.189 34 18.2 9/27/2018 0.28 0.052 20 7.6 10/29/2018 0.26 0.521 9 10.7 1/7/2019 0.29 0.111 18 54.5 3/11/2019 0.59 0.515 112 745.0 6/25/2019 0.15 0.101 8 33.0 7/17/2019 0.08 0.055 10 2.5 8/12/2019 0.12 0.016 17 7.6 9/17/2019 0.17 0.016 19 4.2 10/8/2019 0.07 0.003 7 6.1 2/12/2020 0.74 0.596 27 383.0 3/11/2020 0.42 0.182 38 57.0 7/6/2020 0.08 0.046 16 38.9 8/3/2020 0.15 0.000 19 9.2 9/9/2020 0.18 0.010 15 9.8 11/2/2020 0.07 0.000 4 16.0 2/22/2021 0.50 0.137 115 5880.0 3/16/2021 0.18 0.062 10 41.3 5/12/2021 0.21 0.095 2 103.0 6/24/2021 0.93 0.212 428 42.6 7/28/2021 0.60 0.088 4920 39.7 8/31/2021 0.17 0.010 32 14.7 9/23/2021 0.30 0.062 19 9.9 10/25/2021 0.03 ND 3 12.1 3/1/2022 1.35 0.951 76 148.0 3/23/2022 0.29 0.039 10 22.4 6/28/2022 0.31 0.091 12 45.3 7/28/2022 0.50 0.163 161 29.8 0.025 8/24/2022 0.20 0.055 6 8.9 0.025 9/21/2022 0.22 0.020 2 14.5 0.025 11/3/2022 0.32 0.068 18 24.9 0.025 2/8/2023 0.79 0.508 25 102.0 0.025 3/21/2023 0.52 0.358 11 756.0 0.0625 5/4/2023 0.04 0.007 13 142.0 0.025 6/7/2023 0.15 0.000 8 133.0 0.025 7/10/2023 0.22 0.104 2 58.4 0.025 8/3/2023 0.63 0.046 45 0.025 9/21/2023 0.17 0.036 2 26.4 0.025 10/11/2023 0.22 0.062 8 0.025 2/20/2024 0.06 0.013 14 36.6 0.025 4/2/2024 0.00 0.013 9 86.1 0.148 5/21/2024 0.20 0.036 8 17.2 0.025 7/2/2024 0.13 0.000 12 4.9 0.025 7/30/2024 0.18 0.023 17 4.3 0.025 8/26/2024 0.11 0.007 8 3.9 0.025 9/30/2024 0.25 0.026 74 4.7 0.025 10/24/2024 0.12 0.000 14 6.9 0.025 2024 Average 0.13 0.01 19.38 20.56 0.04 AVERAGE 0.32 0.11 111.41 158.97 0.03 MEDIAN 0.20 0.04 14.00 20.30 0.03 MAX 1.59 0.95 4920.00 5880.00 0.15 MIN 0.00 0.00 1.60 2.54 0.03 STDEV 0.32 0.19 562.33 740.31 0.03 75TH PERCENTILE 0.46 0.10 36.00 56.38 0.03 25TH PERCENTILE 0.12 0.01 7.95 7.59 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 7 Page 171 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.17 0.030 2 7/16/2014 0.27 0.020 45 8/11/2014 0.22 0.020 39 9/17/2014 0.23 0.000 46 10/28/2014 0.08 0.030 19 5/20/2015 0.10 0.020 14.0 7/14/2015 0.19 0.010 32.0 8/6/2015 0.25 0.030 44.0 8/25/2015 0.23 0.090 36.0 9/22/2015 0.17 0.010 24.0 10/29/2015 0.14 0.005 14.0 2/16/2016 0.03 0.010 10 292.0 3/16/2016 0.12 0.010 27 286.0 4/28/2016 0.09 0.010 15 193.6 5/26/2016 0.13 0.040 3 174.4 6/23/2016 0.23 0.050 6 73.6 7/16/2016 0.25 0.070 10 47.3 8/31/2016 0.03 0.010 5 19.5 9/27/2016 0.21 0.010 18 9.6 10/24/2016 0.08 0.010 7 8.3 4/28/2017 0.10 0.040 7 250.0 5/25/2017 0.05 0.010 9 122.0 6/21/2017 0.14 0.036 6 110.0 7/31/2017 0.19 0.078 9 28.9 8/30/2017 0.20 0.016 12 16.4 9/27/2017 0.15 0.020 16 18.3 10/31/2017 0.11 0.010 8 13.1 5/30/2018 0.20 0.036 2 351.0 6/27/2018 0.20 0.020 8 159.0 7/25/2018 0.61 0.007 98 82.4 8/29/2018 0.31 0.003 42 48.7 9/27/2018 0.13 0.000 17 20.7 10/29/2018 0.09 0.010 11 15.9 6/25/2019 0.22 0.010 29 75.0 7/17/2019 0.27 0.000 52 39.1 8/12/2019 0.28 0.010 58 37.3 9/17/2019 0.08 0.020 14 14.7 10/8/2019 0.08 0.016 16 13.3 7/6/2020 0.07 0.007 17 13.1 8/3/2020 0.22 0.003 50 34.3 9/9/2020 0.22 0.026 56 20.8 11/2/2020 0.14 0.013 15 32.9 5/12/2021 0.12 0.000 8 326.0 6/24/2021 0.24 0.033 47 230.0 7/28/2021 0.14 0.020 110 158.0 8/31/2021 0.06 0.003 24 63.8 9/23/2021 0.09 0.003 10 47.1 10/25/2021 0.03 0.000 9 49.8 6/28/2022 0.17 0.062 3 125.0 7/28/2022 0.21 0.072 4 60.6 0.025 8/24/2022 0.11 0.023 2 59.2 0.025 9/21/2022 0.11 0.046 4 58.7 0.025 11/3/2022 0.15 0.075 14 84.7 0.089 5/4/2023 0.04 0.000 9 380.0 0.025 6/7/2023 0.12 0.000 78 293.0 0.025 7/10/2023 0.13 0.016 6 192.0 0.025 8/3/2023 0.31 0.000 45 0.025 9/21/2023 0.23 0.033 20 118.0 0.025 10/11/2023 0.14 0.010 7 0.025 5/21/2024 0.10 0.010 6 68.2 0.025 7/2/2024 0.26 0.000 34 11.7 0.025 7/30/2024 0.23 0.003 48 9.4 0.025 8/26/2024 0.12 0.039 24 8.1 0.025 9/30/2024 0.20 0.016 55 9.0 0.025 10/24/2024 0.22 0.000 52 10.6 0.025 2024 Average 0.19 0.01 36.48 19.51 0.03 AVERAGE 0.17 0.02 24.38 95.85 0.03 MEDIAN 0.15 0.01 15.00 54.25 0.03 MAX 0.61 0.09 110.00 380.00 0.09 MIN 0.03 0.00 1.80 8.11 0.03 STDEV 0.09 0.02 23.07 102.82 0.02 75TH PERCENTILE 0.22 0.03 40.50 149.75 0.03 25TH PERCENTILE 0.10 0.01 8.00 16.88 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 8 Page 172 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.19 0.050 2 7/16/2014 0.13 0.000 50 8/11/2014 0.19 0.030 14 9/17/2014 0.15 0.000 13 10/28/2014 0.27 0.020 19 5/20/2015 0.16 0.020 19.0 7/14/2015 0.10 0.010 17.0 8/6/2015 0.12 0.020 18.0 8/25/2015 0.15 0.040 16.0 9/22/2015 0.09 0.010 11.0 10/29/2015 0.19 0.026 18.0 2/16/2016 0.32 0.060 15 3440.0 3/16/2016 0.12 0.010 27 96.9 4/28/2016 0.28 0.010 22 152.8 5/26/2016 0.13 0.030 6 126.0 6/23/2016 0.14 0.010 18 58.4 7/16/2016 0.11 0.010 8 38.7 8/31/2016 0.03 0.010 5 19.5 9/27/2016 0.21 0.030 7 22.9 10/24/2016 0.28 0.100 16 19.5 4/28/2017 0.11 0.050 13 173.4 5/25/2017 0.05 0.013 5 108.0 6/21/2017 0.15 0.007 22 96.8 7/31/2017 0.06 0.010 7 51.0 8/30/2017 0.06 0.000 9 35.6 9/27/2017 0.05 0.016 5 41.9 10/31/2017 0.42 0.205 6 74.6 2/14/2018 0.59 0.329 16 361.0 3/14/2018 0.68 0.384 44 179.0 5/30/2018 0.22 0.026 10 155.0 6/27/2018 0.13 0.007 5 109.0 7/25/2018 0.19 0.020 89 92.0 8/29/2018 0.65 0.010 11 75.4 9/27/2018 0.09 0.003 9 73.6 10/29/2018 0.19 0.036 10 106.0 1/7/2019 0.15 0.095 4 63.8 3/11/2019 0.21 0.192 3 177.0 6/25/2019 0.08 0.007 6 90.0 7/17/2019 0.12 0.007 40 42.7 8/12/2019 0.07 0.007 15 44.9 9/17/2019 0.09 0.023 12 52.2 10/8/2019 0.07 0.010 10 52.7 2/12/2020 0.10 0.026 9 193.0 3/11/2020 0.18 0.039 4 43.0 7/7/2020 0.00 0.000 10 49.0 8/3/2020 0.05 0.000 16 39.2 9/16/2020 0.04 0.000 8 52.6 11/2/2020 0.24 0.104 20 119.0 2/22/2021 0.62 0.137 176 5890.0 3/16/2021 0.19 0.033 10 94.2 5/12/2021 0.07 0.000 3 150.0 6/24/2021 0.10 0.016 38 130.0 7/28/2021 0.08 0.003 8 122.0 8/31/2021 0.03 0.003 8 78.9 9/23/2021 0.07 0.000 8 84.6 10/25/2021 0.06 0.000 6 137.0 3/1/2022 0.24 0.192 1 139.0 3/23/2022 0.27 0.127 10 75.2 6/28/2022 0.11 0.000 13 109.0 7/28/2022 0.11 0.000 21 93.8 0.025 8/24/2022 0.06 0.000 17 68.3 0.025 9/21/2022 0.07 0.000 13 60.2 0.025 11/3/2022 0.20 0.010 28 135.0 0.205 2/8/2023 0.17 0.020 5 113.0 0.025 3/21/2023 0.28 0.062 15 139.0 0.131 5/4/2023 0.05 0.000 7 203.0 0.025 6/7/2023 0.03 0.000 19 33.6 0.025 7/10/2023 0.04 0.000 5 122.0 0.025 8/3/2023 0.13 0.000 7 0.025 9/21/2023 0.12 0.007 8 145.0 0.025 10/11/2023 0.10 0.000 6 0.025 2/20/2024 0.19 0.036 3 81.3 0.244 4/2/2024 0.04 0.003 8 124.0 0.2225 5/21/2024 0.19 0.085 4 57.3 0.0743 7/2/2024 0.05 0.000 13 16.6 0.025 7/30/2024 0.00 0.000 9 11.6 0.025 8/26/2024 0.08 0.010 10 11.1 0.025 9/30/2024 0.03 0.003 9 13.4 0.025 10/24/2024 0.06 0.000 16 25.7 0.025 2024 Average 0.11 0.02 10.60 84.62 0.06 AVERAGE 0.15 0.04 15.70 230.15 0.06 MEDIAN 0.12 0.01 10.00 87.30 0.03 MAX 0.68 0.38 176.00 5890.00 0.24 MIN 0.00 0.00 0.80 11.10 0.03 STDEV 0.14 0.07 22.15 820.82 0.07 75TH PERCENTILE 0.19 0.03 16.70 131.25 0.06 25TH PERCENTILE 0.07 0.00 7.00 47.98 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 9 Page 173 of 199 Water Quality Sampling Results WSB Project No. 025921-000 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) Nitrate (mg/L) 6/10/2014 0.14 0.050 3 7/16/2014 0.26 0.010 19 8/11/2014 0.86 0.070 340 9/17/2014 0.41 0.010 66 10/28/2014 0.68 0.060 22 5/20/2015 0.26 0.040 59 7/14/2015 0.24 0.010 32 8/6/2016 0.23 0.020 26 8/25/2015 0.25 0.020 38 9/22/2015 0.21 0.010 19 10/29/2015 0.13 0.005 17 4/28/2016 0.12 0.010 37 12.9 5/26/2016 0.43 0.060 53 25.4 6/23/2016 1.06 0.740 35 40.8 7/16/2016 0.33 0.040 48 21.8 8/31/2016 0.24 0.010 35 21.6 9/27/2016 0.25 0.020 20 21.4 10/24/2016 0.26 0.010 33 15.3 4/28/2017 0.05 0.020 13 96.4 5/25/2017 0.05 0.010 10 58.0 6/21/2017 0.30 0.029 50 53.1 7/31/2017 0.22 0.000 35 35.1 8/30/2017 0.25 0.000 65 27.9 9/27/2017 0.28 0.036 59 24.2 10/31/2017 0.21 0.016 32 16.9 5/30/2018 0.32 0.000 32 86.7 6/27/2018 0.24 0.003 31 69.6 7/25/2018 0.33 0.020 97 51.6 8/29/2018 0.29 0.020 50 38.2 9/27/2018 0.21 0.003 32 39.6 10/29/2018 0.07 0.010 11 30.7 6/25/2019 0.13 0.000 20 72.0 7/17/2019 0.16 0.007 40 49.4 8/12/2019 0.24 0.010 51 46.3 9/17/2019 0.22 0.078 41 31.8 10/8/2019 0.15 0.029 27 27.9 7/7/2020 0.13 0.000 43 39.6 8/3/2020 0.17 0.000 31 35.7 9/16/2020 0.20 0.000 36 29.2 11/2/2020 0.22 0.000 21 38.5 5/12/2021 0.08 0.000 10 107.0 6/28/2021 0.13 0.042 21 90.1 7/28/2021 0.13 0.004 9 103.0 8/31/2021 0.16 0.007 51 59.7 9/23/2021 0.15 0.000 50 54.1 10/25/2021 0.06 0.000 35 56.8 6/28/2022 0.28 0.000 26 66.5 7/28/2022 0.38 0.000 109 80.0 0.025 8/24/2022 0.27 0.000 36 59.9 0.025 9/21/2022 0.32 0.000 52 51.0 0.025 11/3/2022 0.20 0.020 41 60.0 0.025 5/4/2023 0.07 0.003 24 146.0 0.025 6/7/2023 0.09 0.000 5 15.1 0.025 7/10/2023 0.15 0.000 26 110.0 0.025 8/3/2023 0.13 0.000 31 0.025 9/21/2023 0.33 0.065 35 92.7 0.025 10/11/2023 0.26 0.049 31 0.025 5/21/2024 0.19 0.010 25 59.8 0.025 7/2/2024 0.13 0.000 36 20.2 0.025 7/30/2024 0.03 0.003 13 18.7 0.025 8/20/2024 0.24 0.000 56 15.6 0.025 9/30/2024 0.20 0.033 42 21.2 0.025 10/24/2024 0.12 0.000 34 23.8 0.025 2024 Average 0.15 0.01 34.38 26.55 0.03 AVERAGE 0.24 0.03 40.11 49.37 0.03 MEDIAN 0.22 0.01 34.20 40.20 0.03 MAX 1.06 0.74 340.00 146.00 0.03 MIN 0.03 0.00 3.00 12.88 0.03 STDEV 0.17 0.09 42.92 30.18 0.00 75TH PERCENTILE 0.27 0.02 48.00 61.63 0.03 25TH PERCENTILE 0.13 0.00 22.00 24.10 0.03 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Location 10 Page 174 of 199 Water Quality Sampling Results WSB Project No. 025921 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Sampling Date1 Total Phosphorus (mg/L) Ortho Phosphorus (mg/L) Total Suspended Solids (mg/L) Chloride (mg/L) 6/10/2014 0.04 0.0300 34 60.4 7/16/2014 0.36 0.0400 24 8/11/2014 0.04 0.0200 8 39.8 9/17/2014 0.19 0.0700 11 10/28/2014 0.10 0.0700 2 40.4 2/16/2016 0.07 0.0100 2 44.6 3/16/2016 0.03 0.0100 4 53.5 2/14/2018 0.17 0.0456 4 44.4 3/14/2018 0.22 0.0195 10 58.1 1/7/2019 0.06 0.0195 5 49.7 3/11/2019 0.05 0.0456 5 50.1 2/12/2020 0.08 0.0000 9 65.8 3/11/2020 0.14 0.0000 6 27.7 2/22/2021 0.21 0.0586 12 47.5 3/16/2021 0.12 0.0065 12 20.9 3/1/2022 0.23 0.0000 15 56.5 3/23/2022 0.24 0.0521 20 45.3 4/21/2022 0.07 4/26/2022 0.11 5/10/2022 0.10 5/23/2022 0.13 6/6/2022 0.10 6/28/2022 0.09 7/4/2022 0.57 7/18/2022 0.58 8/6/2022 0.51 8/15/2022 0.15 9/1/2022 0.07 9/16/2022 0.06 9/27/2022 0.12 10/14/2022 0.13 2/8/2023 0.24 0.0100 21.4 51.0 3/21/2023 0.24 0.0130 14.2 54.4 2/21/2024 0.10 0.0065 4.2 49.0 4/3/2024 0.02 0.0100 18.8 53.4 2024 Average 0.06 0.0083 11.5 51.20 AVERAGE 0.17 0.0293 10.7 46.98 MEDIAN 0.12 0.0200 9.0 47.50 MAX 0.58 0.0700 34.0 65.80 MIN 0.03 0.0000 2.0 20.90 STDEV 0.15 0.0243 8.5 11.86 75TH PERCENTILE 0.21 0.0489 13.3 56.50 25TH PERCENTILE 0.07 0.0083 4.5 40.40 1 - Water quality analysis was performed by William Lloyd / Tri-City Laboratory Indicates sample result below lab detection limits, 1/2 MDL value reported Birger Page 175 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.19 0.08 6.00 2014 0.28 0.02 9.00 2014 0.09 0.04 6.00 2014 0.17 0.02 7.00 2014 0.18 0.01 16.00 2015 0.20 0.13 3.00 2015 0.13 0.07 4.00 2015 0.13 0.02 6.00 2015 0.16 0.08 7.00 2015 0.15 0.10 6.00 2015 0.15 0.04 5.00 2016 0.08 0.07 2.00 34.70 2016 0.10 0.08 2.00 33.50 2016 0.30 0.19 27.00 20.70 2016 0.09 0.02 3.00 18.10 2016 0.11 0.02 3.00 11.10 2016 0.15 0.09 1.00 8.15 2016 0.20 0.10 1.00 8.40 2017 0.13 0.08 2.00 91.80 2017 0.08 0.01 1.00 56.00 2017 0.11 0.06 6.00 61.50 2017 0.22 0.02 24.00 20.40 2017 0.12 0.05 36.00 14.90 2017 0.10 0.03 4.00 15.90 2017 0.11 0.02 3.00 14.90 2018 0.19 0.02 15.00 62.30 2018 0.12 0.05 11.00 60.00 2018 0.06 0.02 6.00 49.60 2018 0.06 0.00 3.00 39.20 2018 0.01 0.04 4.00 25.30 2018 0.10 0.03 5.00 24.00 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.050 0.100 0.150 0.200 0.250 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 20 40 60 80 100 120 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 5 10 15 20 25 30 35 40 ANNUAL TOTAL SUSPENDED SOLIDS Location 1 - Marcotte 1408 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 176 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.18 0.090 0 2014 0.40 0.010 11 2014 0.04 0.050 100 2014 0.23 0.030 10 2014 0.07 0.010 4 2015 0.06 0.030 16.0 2015 0.13 0.070 11.0 2015 0.07 0.060 2.0 2015 0.14 0.060 13.0 2015 0.24 0.030 17.0 2015 0.05 0.005 5.0 2016 0.10 0.03 6 29.0 2016 0.18 0.04 12 38.2 2016 0.24 0.01 30 16.0 2016 0.17 0.02 17 11.4 2016 0.19 0.01 17 5.6 2016 0.16 0.04 8 13.1 2016 0.10 0.01 6 10.2 2017 0.13 0.08 8 91.8 2017 0.02 0.03 8 52.0 2017 0.22 0.00 15 48.6 2017 0.15 0.00 13 10.8 2017 0.01 0.00 13 6.8 2017 0.09 0.03 17 20.1 2017 0.13 0.01 13 15.0 2018 0.13 0.00 6 73.3 2018 0.09 0.00 2 36.2 2018 0.04 0.01 6 28.3 2018 0.08 0.02 8 13.6 2018 0.04 0.01 5 17.3 2018 0.09 0.01 9 13.2 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.140 0.160 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 300 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 20 40 60 80 100 120 ANNUAL TOTAL SUSPENDED SOLIDS Location 2 – Glendalough 1486 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 177 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.10 0.100 1 2014 0.18 0.050 2 2014 0.33 0.110 14 2014 0.21 0.030 10 2014 0.15 0.010 1 2015 0.20 0.090 6.0 2015 0.20 0.160 2.0 2015 0.35 0.100 30.0 2015 0.15 0.110 7.0 2015 0.24 0.090 13.0 2015 0.26 0.160 10.0 2016 0.19 0.05 13 53.9 2016 0.47 0.05 26 19.3 2016 0.41 0.17 3 6.5 2016 0.19 0.10 6 4.1 2016 0.14 0.10 10 6.9 2016 0.25 0.01 8 9.3 2016 0.36 0.03 14 7.2 2017 0.06 0.02 8 109.6 2017 0.05 0.00 3 13.2 2017 0.22 0.04 9 16.0 2017 0.13 0.02 8 7.4 2017 0.07 0.00 4 7.7 2017 0.14 0.02 1 8.0 2017 0.24 0.06 6 21.5 2018 0.39 0.05 55 32.0 2018 0.13 0.08 2 14.8 2018 0.03 0.02 5 13.6 2018 0.14 0.07 17 6.6 2018 0.98 0.07 3 14.0 2018 0.21 0.07 10 15.0 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.050 0.100 0.150 0.200 0.250 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.20 0.40 0.60 0.80 1.00 1.20 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 300 350 400 450 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 10 20 30 40 50 60 ANNUAL TOTAL SUSPENDED SOLIDS Location 3 – Trailer Park 1589 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 178 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.10 0.020 8 2014 0.07 0.000 8 2014 0.15 0.010 22 2014 0.16 0.000 16 2014 0.07 0.000 13 2015 0.07 0.020 15.0 2015 0.08 0.020 9.0 2015 0.13 0.040 18.0 2015 0.13 0.060 10.0 2015 0.11 0.010 17.0 2015 0.07 0.005 14.0 2016 0.07 0.01 10 59.6 2016 0.12 0.01 15 40.5 2016 0.08 0.01 2 37.4 2016 0.06 0.01 13 18.4 2016 0.02 0.01 15 16.0 2016 0.15 0.15 3 33.3 2016 0.07 0.01 3 33.6 2017 0.02 0.02 4 78.4 2017 0.06 0.00 3 59.2 2107 0.08 0.00 3 43.4 2017 0.08 0.01 6 38.1 2017 0.08 0.00 4 36.4 2017 0.04 0.01 5 85.5 2017 0.05 0.02 2 37.3 2018 0.11 0.00 129 64.9 2018 0.19 0.00 5 45.7 2018 0.07 0.02 17 35.8 2018 0.07 0.01 11 18.7 2018 0.07 0.02 11 19.8 2018 0.07 0.00 10 22.1 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 10 20 30 40 50 60 70 80 ANNUAL TOTAL SUSPENDED SOLIDS Location 4 – Unnamed 1687 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 179 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.10 0.02 10 2014 0.16 0.00 11 2014 0.08 0.01 19 2014 0.20 0.00 24 2014 0.14 0.04 15 2015 0.26 0.070 27.0 2015 0.23 0.050 12.0 2015 0.14 0.030 16.0 2015 0.20 0.070 19.0 2015 0.14 0.010 18.0 2015 0.12 0.005 12.0 2016 0.07 0.01 10 45.2 2016 0.07 0.01 20 33.6 2016 0.13 0.01 6 20.6 2016 0.14 0.01 18 10.7 2016 0.20 0.01 19 5.5 2016 0.15 0.04 6 2.5 2016 0.07 0.01 4 38.0 2017 0.02 0.02 8 98.4 2017 0.07 0.00 2 40.4 2017 0.07 0.02 2 41.8 2017 0.05 0.01 2 34.8 2017 0.05 0.00 1 27.9 2017 0.08 0.07 4 27.3 2017 0.07 0.02 2 26.4 2018 0.13 0.00 7 98.6 2018 0.13 0.02 1 55.8 2018 0.07 0.02 11 44.3 2018 0.02 0.01 12 28.4 2018 0.07 0.01 5 25.1 2018 0.07 0.01 7 33.5 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.140 0.160 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.05 0.10 0.15 0.20 0.25 0.30 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 300 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 10 20 30 40 50 60 ANNUAL TOTAL SUSPENDED SOLIDS Location 5 – Regional 1716 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 180 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.12 0.020 8 7.2 2014 0.10 0.000 11 2014 0.29 0.180 19 20.0 2014 0.26 0.070 12 2014 0.11 0.070 15 9.3 2015 0.24 0.170 4.0 2015 0.21 0.150 5.0 2015 0.41 0.270 13.0 2015 0.23 0.190 7.0 2015 0.33 0.210 5.0 2015 0.23 0.091 12.0 2016 0.23 0.01 14 150.8 2016 0.23 0.09 13 205.2 2016 0.19 0.08 1 13.6 2016 0.23 0.16 7 13.5 2016 0.17 0.05 8 16.8 2016 0.08 0.03 6 2.5 2016 0.01 0.04 9 3.4 2017 0.07 0.03 16 89.4 2017 0.10 0.04 20 28.9 2017 0.17 0.06 8 19.1 2017 0.19 0.12 7 11.4 2017 0.13 0.08 14 7.4 2017 0.50 0.28 17 11.8 10/31/217 0.22 0.09 7 4.9 2018 0.23 0.08 7 67.7 2018 0.30 0.20 15 37.1 2018 0.14 0.09 8 27.4 2018 0.16 0.12 5 9.1 2018 0.13 0.07 5 4.5 2018 0.44 0.06 30 4.8 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400 0.450 0.500 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0.0 100.0 200.0 300.0 400.0 500.0 600.0 700.0 800.0 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 10 20 30 40 50 60 ANNUAL TOTAL SUSPENDED SOLIDS Location 6 – Erickson 578 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 181 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.45 0.310 2 2014 0.49 0.050 174 2014 0.26 0.020 51 2014 0.15 0.000 9 2014 0.56 0.010 260 2015 0.19 0.120 2.0 2015 1.03 0.070 397.0 2015 0.19 0.030 22.0 2015 0.17 0.050 312.0 2015 0.07 0.010 9.0 2015 0.07 0.005 13.0 2016 0.06 0.01 7 46.3 2016 0.10 0.01 10 37.0 2016 1.03 0.04 29 7.0 2016 0.11 0.01 5 3.9 2016 0.12 0.01 8 4.7 2016 0.18 0.02 6 4.4 2016 0.46 0.01 2 5.8 2017 0.10 0.03 15 99.8 2017 0.09 0.03 4 15.3 2017 0.59 0.08 34 15.7 2017 0.15 0.03 17 5.6 2017 0.13 0.01 60 5.5 2017 0.02 0.02 51 8.4 2017 0.04 0.00 3 8.2 2018 0.20 0.00 4 80.4 2018 0.23 0.06 14 26.4 2018 0.57 0.16 157 28.8 2018 0.38 0.19 34 18.2 2018 0.28 0.05 20 7.6 2018 0.26 0.52 9 10.7 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.100 0.200 0.300 0.400 0.500 0.600 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.20 0.40 0.60 0.80 1.00 1.20 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 300 350 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 50 100 150 200 250 300 350 400 450 ANNUAL TOTAL SUSPENDED SOLIDS Location 7 – Bloomfield 1864 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Page 182 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.17 0.030 2 2014 0.27 0.020 45 2014 0.22 0.020 39 2014 0.23 0.000 46 2014 0.08 0.030 19 2015 0.10 0.020 14.0 2015 0.19 0.010 32.0 2015 0.25 0.030 44.0 2015 0.23 0.090 36.0 2015 0.17 0.010 24.0 2015 0.14 0.005 14.0 2016 0.09 0.01 15 193.6 2016 0.13 0.04 3 174.4 2016 0.23 0.05 6 73.6 2016 0.25 0.07 10 47.3 2016 0.03 0.01 5 19.5 2016 0.21 0.01 18 9.6 2016 0.08 0.01 7 8.3 2017 0.10 0.04 7 250.0 2017 0.05 0.01 9 122.0 2017 0.14 0.04 6 110.0 2017 0.19 0.08 9 28.9 2017 0.20 0.02 12 16.4 2017 0.15 0.02 16 18.3 2017 0.11 0.01 8 13.1 2018 0.20 0.04 2 351.0 2018 0.20 0.02 8 159.0 2018 0.61 0.01 98 82.4 2018 0.31 0.00 42 48.7 2018 0.13 0.00 17 20.7 2018 0.09 0.01 11 15.9 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0 20 40 60 80 100 120 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 300 350 400 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 20 40 60 80 100 120 ANNUAL TOTAL SUSPENDED SOLIDS Location 8 – O’Leary’s 600 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 183 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phospho rus (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.19 0.050 2 2014 0.13 0.000 50 2014 0.19 0.030 14 2014 0.15 0.000 13 2014 0.27 0.020 19 2015 0.16 0.020 19.0 2015 0.10 0.010 17.0 2015 0.12 0.020 18.0 2015 0.15 0.040 16.0 2015 0.09 0.010 11.0 2015 0.19 0.026 18.0 2016 0.28 0.01 22 152.8 2016 0.13 0.03 6 126.0 2016 0.14 0.01 18 58.4 2016 0.11 0.01 8 38.7 2016 0.03 0.01 5 19.5 2016 0.21 0.03 7 22.9 2016 0.28 0.10 16 19.5 2017 0.11 0.05 13 173.4 2017 0.05 0.01 5 108.0 2017 0.15 0.01 22 96.8 2017 0.06 0.01 7 51.0 2017 0.06 0.00 9 35.6 2017 0.05 0.02 5 41.9 2017 0.42 0.21 6 74.6 2018 0.22 0.03 10 155.0 2018 0.13 0.01 5 109.0 2018 0.19 0.02 89 92.0 2018 0.65 0.01 11 75.4 2018 0.09 0.00 9 73.6 2018 0.19 0.04 10 106.0 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090 0.100 0.110 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 50 100 150 200 250 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 10 20 30 40 50 60 70 80 90 100 ANNUAL TOTAL SUSPENDED SOLIDS Location 9 – Wachter 2443 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN WSB Project No. 025921 Page 184 of 199 Sampling Date1 Total Phospho rus (mg/L) Ortho Phosphor us (mg/L) Total Suspend ed Solids (mg/L) Chloride (mg/L) 2014 0.14 0.050 3 2014 0.26 0.010 19 2014 0.86 0.070 340 2014 0.41 0.010 66 2014 0.68 0.060 22 2015 0.26 0.040 59.0 2015 0.24 0.010 32.0 2016 0.23 0.020 26.0 2015 0.25 0.020 38.0 2015 0.21 0.010 19.0 2015 0.13 0.005 17.0 2016 0.12 0.010 37 12.9 2016 0.43 0.060 53 25.4 2016 0.33 0.040 48 21.8 2016 0.24 0.010 35 21.6 2016 0.25 0.020 20 21.4 2016 0.26 0.010 33 15.3 2017 0.05 0.020 13 96.4 2017 0.05 0.010 10 58.0 2017 0.30 0.029 50 53.1 2017 0.22 0.000 35 35.1 2017 0.25 0.000 65 27.9 2017 0.28 0.036 59 24.2 2017 0.21 0.016 32 16.9 2018 0.32 0.000 32 86.7 2018 0.24 0.003 31 69.6 2018 0.33 0.020 97 51.6 2018 0.29 0.020 50 38.2 2018 0.21 0.003 32 39.6 2018 0.07 0.010 11 30.7 Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l O r t h o -Ph o s p h a t e ( m g / L ) 0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.140 0.160 0.180 0.200 ANNUAL TOTAL ORTHO-PHOSPHATE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l P h o s p h o r u s ( m g / L ) 0.00 0.20 0.40 0.60 0.80 1.00 1.20 ANNUAL TOTAL PHOSPHORUS Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0 20 40 60 80 100 120 140 160 ANNUAL TOTAL CHLORIDE Year 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 To t a l S u s p e n d e d S o l i d s ( m g / L ) 0 50 100 150 200 250 300 350 400 ANNUAL TOTAL SUSPENDED SOLIDS Location 10 – Shannon 614 Water Quality Sampling Results Annual summary concentrations of Total Phosphorus, Ortho-Phosphate, Total Suspended Solids, and Chloride 2024 Water Quality and Quantity Monitoring Study City of Rosemount, MN Page 185 of 199 Year 2014 2016 2018 2019 2020 2021 2022 2023 2024 To t a l C h l o r i d e ( m g / L ) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 ANNUAL TOTAL CHLORIDE Page 186 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Marcotte #1408 (1) 4-Day Chronic Standard (230 mg/L) Page 187 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Glendalough #1486 (2) 4-Day Chronic Standard (230 mg/L) Page 188 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Trailer Park #1589 (3) 4-Day Chronic Standard (230 mg/L) Page 189 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Unnamed #1687 (4) 4-Day Chronic Standard (230 mg/L) Page 190 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Cat #1716 (5) 4-Day Chronic Standard (230 mg/L) Page 191 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Erickson #578 (6) 4-Day Chronic Standard (230 mg/L) Page 192 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Bloomfield #1864 (7) 4-Day Chronic Standard (230 mg/L) Page 193 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations O'Leary's #600 (8) 4-Day Chronic Standard (230 mg/L) Page 194 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Wachter #2443 (9) 4-Day Chronic Standard (230 mg/L) Page 195 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Shannon #614 (10) 4-Day Chronic Standard (230 mg/L) Page 196 of 199 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 Ch l o r i d e C o n c e n t r a t i o n ( m g / L ) Chloride Concentrations Birger 4-Day Chronic Standard (230 mg/L) Page 197 of 199 GPM 1,200 1,235 1,600 1,500 1,500 1,500 2,000 500 500 2025 Well 7 Well 8 Well 9 Well 12 Well 14 Well 15 Well 16 Rural 1 Rural 2 2025 Total 2024 Total % Change 2024 2025 Diff Jan 3,000 0 21,065,000 0 111,000 15,871,000 10,463,000 12,000 4,720,000 52,245,000 49,142,000 6.3% 0.13 0.13 0.00 Feb 17,000 19,000 18,332,000 13,000 14,000 22,453,000 1,700,000 2,090,000 2,140,000 46,778,000 40,577,000 15.3% 0.65 0.41 -0.24 Mar 49,000 21,000 20,553,000 4,242,000 69,000 0 17,766,000 2,413,000 2,344,000 47,457,000 47,841,000 -0.8% 2.51 2.96 0.45 Q1 Total 69,000 40,000 59,950,000 4,255,000 194,000 38,324,000 29,929,000 4,515,000 9,204,000 146,480,000 137,560,000 6.5% 3.29 3.50 0.21 Apr 60,000 15,000 23,632,000 19,843,000 16,000 16,000 252,000 3,137,000 2,788,000 49,759,000 55,991,000 -11.1% 4.19 1.98 -2.21 May 21,000 19,229,000 28,603,000 20,674,000 17,212,000 13,861,000 32,390,000 1,394,000 1,622,000 135,006,000 101,270,000 33.3% 5.81 3.27 -2.54 Jun 0 90,507,000 -100.0% 7.27 -7.27 Q2 Total 81,000 19,244,000 52,235,000 40,517,000 17,228,000 13,877,000 32,642,000 4,531,000 4,410,000 184,765,000 247,768,000 -25.4% 17.27 5.25 -12.02 Jul 0 144,584,000 -100.0% 5.61 -5.61 Aug 0 127,865,000 -100.0% 5.37 -5.37 Sep 0 153,032,000 -100.0% 0.06 -0.06 Q3 Total 0 0 00 00000 0425,481,000 -100.0% 11.04 0.00 -11.04 Oct 0 110,407,000 -100.0% 1.74 -1.74 Nov 0 53,984,000 -100.0% 1.94 -1.94 Dec 0 50,288,000 -100.0% 0.00 Q4 Total 0 0 00 00000 0214,679,000 -100.0%3.68 0.00 -3.68 Total 150,000 19,284,000 112,185,000 44,772,000 17,422,000 52,201,000 62,571,000 9,046,000 13,614,000 331,245,000 1,025,488,000 -67.7%35.28 8.75 -26.53 Average/Mo 30,000 3,856,800 22,437,000 8,954,400 3,484,400 10,440,200 12,514,200 1,809,200 2,817,500 66,343,700 85,555,803 -22.5% Average/Day 411 52,833 307,356 122,663 47,732 143,016 171,427 24,784 37,299 907,521 2,809,556 -67.7% 331,245,000 294,821,000 12.4% 35.28 8.75 -26.53 2025 Well Pumping Record Precipitation Year To-Date Page 198 of 199 GPM 1,200 1,235 1,600 1,500 1,500 1,500 2,000 500 500 2024 Well 7 Well 8 Well 9 Well 12 Well 14 Well 15 Well 16 Rural 1 Rural 2 2024 Total 2023 Total % Change 2023 2024 Diff Jan 0 0 0 17,166,000 1,052,000 25,843,000 0 2,620,000 2,461,000 49,142,000 44,173,000 11.2% 2.25 0.13 -2.12 Feb 0 15,000 16,606,000 73,000 0 114,000 18,910,000 2,472,000 2,387,000 40,577,000 42,162,000 -3.8% 2.38 0.65 -1.73 Mar 0 0 1,953,000 15,206,000 23,484,000 0 2,231,000 2,518,000 2,449,000 47,841,000 47,112,000 1.5% 2.72 2.51 -0.21 Q1 Total 0 15,000 18,559,000 32,445,000 24,536,000 25,957,000 21,141,000 7,610,000 7,297,000 137,560,000 133,447,000 3.1% 7.35 3.29 -4.06 Apr 3,000 21,814,000 792,000 78,000 112,000 27,480,000 216,000 2,580,000 2,916,000 55,991,000 46,373,000 20.7% 2.39 4.19 1.80 May 0 35,153,000 1,848,000 8,863,000 42,627,000 2,570,000 3,889,000 1,652,000 4,668,000 101,270,000 110,781,000 -8.6% 1.62 5.81 4.19 Jun 0 3,372,000 29,922,000 4,838,000 1,883,000 10,411,000 34,736,000 2,607,000 2,738,000 90,507,000 162,212,500 -44.2% 0.93 7.27 6.34 Q2 Total 3,000 60,339,000 32,562,000 13,779,000 44,622,000 40,461,000 38,841,000 6,839,000 10,322,000 247,768,000 359,517,000 -31.1% 4.94 17.27 12.33 Jul 504,000 38,591,000 8,475,000 13,024,000 12,672,000 41,238,000 20,103,000 4,945,000 5,032,000 144,584,000 168,701,000 -14.3% 2.57 5.61 3.04 Aug 727,000 6,338,000 37,460,000 9,199,000 49,513,000 5,665,000 9,392,000 4,584,000 4,987,000 127,865,000 182,711,000 -30.0% 2.29 5.37 3.08 Sep 1,607,000 39,092,000 11,575,000 13,785,000 12,139,000 31,348,000 37,108,000 2,935,000 3,443,000 153,032,000 151,939,000 0.7% 5.72 0.06 -5.66 Q3 Total 2,838,000 84,021,000 57,510,000 36,008,000 74,324,000 78,251,000 66,603,000 12,464,000 13,462,000 425,481,000 503,351,000 -15.5% 10.58 11.04 0.46 Oct 50,000 27,626,000 10,965,000 3,717,000 3,687,000 29,806,000 27,837,000 3,309,000 3,410,000 110,407,000 87,864,000 25.7% 4.50 1.74 -2.76 Nov 8,000 0 2,960,000 16,740,000 25,935,000 4,043,000 0 765,000 3,533,000 53,984,000 46,602,000 15.8% 0.04 1.94 1.90 Dec 6,000 10,000 18,745,000 2,100,000 3,638,000 0 21,427,000 0 4,362,000 50,288,000 50,371,000 -0.2% 2.28 1.27 -1.01 Q4 Total 64,000 27,636,000 32,670,000 22,557,000 33,260,000 33,849,000 49,264,000 4,074,000 11,305,000 214,679,000 153,856,000 39.5% 6.82 4.95 -1.87 Total 2,905,000 172,011,000 141,301,000 104,789,000 176,742,000 178,518,000 175,849,000 30,987,000 42,386,000 1,025,488,000 1,150,171,000 -10.8% 29.69 36.55 6.86 Average/Mo 242,083 14,334,250 11,775,083 8,732,417 14,728,500 14,876,500 14,654,083 2,582,250 3,630,636 85,555,803 101,790,826 -15.9% Average/Day 7,959 471,263 387,126 287,093 484,225 489,090 481,778 84,896 116,126 2,809,556 3,335,118 -15.8% 1,025,488,000 1,141,001,500 -10.1% 29.69 36.55 6.86 2024 Well Pumping Record Precipitation Year To-Date Page 199 of 199