HomeMy WebLinkAbout7.a. Rosemount 2020 Comprehensive Plan Corrective Text AmendmentCITY OF ROSEMOUNT
EXECUTIVE SUMMARY FOR ACTION
City Council Meeting Date: November 20, 2001
AGENDA ITEM: Rosemount 2020 Comprehensive Plan
AGENDA SECTION:
Corrective Text Amendment
Old Business
PREPARED BY: Rick Pearson, City Planner
AGENDA -
ATTACHMENTS: Service District Boundary Map,
APPROVED BY:
Correspondence, Comp Plan excerpt.
SUMMARY
This item is a result of Met Council discussions with Staff. Rosemount has two sanitary sewer service areas.
Most of Rosemount's effluent goes to the Rosemount Waste Water Treatment Plant (WWTP) east of US. 52,
which is north of 140 Street East across from the Rich Valley Golf Course. However, most of the area south of
CSAH 42 is in the Empire Waste Water Service area (see map). In the preparation of the 2020 Rosemount
Comprehensive Plan, an error was made relative to the estimated flows to the Empire WWTP.
The Comprehensive Plan indicates the increase inflows based on projected development, but omitted the
existing flows in the Empire WWTP service area. Met Council Staff might have caught the oversight, however,
the plan was reviewed at a time when every city in the Metro area had a Comp Plan in process or being
reviewed. Therefore, the amendment is being presented to Met Council as a "corrective text amendment" with
no influence on any other issue contemplated by either Rosemount or the Met Council.
PLANNING COMMISSION PUBLIC HEARING
No one attended or commented at the public hearing. The Planning Commissioners requested minimal
clarification, then adopted a motion (4 -0) to recommend adoption of the amendment.
RECOMMENDED ACTION:
Motion to authorize staff to prepare a corrective text amendment to the 2020 Rosemount Comprehensive Plan
concerning sanitary sewer flows to the Empire Waste Water Treatment Plant and submit it to the Met
Council.
CITY COUNCIL ACTION:
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May 10, 2001
Mr. Thomas Burt
City Administrator
City of Rosemount
2875 145 St. W
Rosemount, MN 550684997
Dear Mr. Burt:
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Environmental Services
This letter is a follow up to the meeting of April 11, 2001 you had with Metropolitan Council staff
concerning the City's existing flows to the Empire WWTP. Over the last 9 months the flows from the
City of Rosemount to the Empire WWTP have increased from an average daily flow of .27 mgd to .32
mgd which will be adequate through 2005 based on the comprehensive plans of the tributary
communities.
On January 26, 2000, the Metropolitan Council acted on the comprehensive plan for the City of
Rosemount. The comprehensive plan for the City indicated that the 2005 flow from the Empire WWTP
service area would be 0.3 mgd and the 2020 flow would be 0.35 mgd. The existing Empire WWTP has a
capacity of 12 mgd. The schedule for the expansion of the Empire WWTP is very tight. For this reason,
all the tributary communities to the Empire plant must keep their flows within the limits defined by their
comprehensive plans until additional capacity can be provided. The Metropolitan Council has approved
the hiring of a consultant to evaluate the capacity of the existing Empire WWTP and to recommend
possible interim capacity 'improvements to the plant. This study should be completed in September of
2001.
At the April 11 meeting„ the City indicated that a mistake had been made in calculating the projected
flows from the City's Empire WWTP service area. The City indicated that approximately 149 vacant
sewered residential lots, a portion of the City's industrial park, and the tributary to the service area could
add an additional flow of up to 0.23 mgd to the service area for a total flow of 0.55 mgd. Since the flow
from this area of the City has already exceeded the 0.3 mgd limit within the Empire service district, the
City will have to amend its comprehensive plan to be allowed to add additional flows to this area. The
remaining capacity at the Empire WWTP has been committed to other tributary communities through the
approval of their comprehensive plans. A plan amendment requesting additional capacity, to be supported
by staff, must include a plan to divert flows greater then 0.3 mgd to the Rosemount WWTP if the MC
deems it necessary.
If you have any questions, please contact Mr. Donald Bluhm at telephone number 651- 602 -1116 of my
staff.
Sincerely,
William G. Moore
General Manager, Wastewater Services
cc: John Conzemius, Metro Council member
Eli Cooper, MC
ww.metrocouncil . org Mike King, MC
Metro into Line 602 -1888
230 East Fifth Street • St. Paul, Minnesota 55101 -1626 • (651) 602.1005 • Fax 602 -1138 • TIY 229 -3760
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2020 Comprehensive Plan Update
gheight of 200fekt or more above ground level be
itional, or interim use (IUP) requirements and
of Mn /DOT and the FAAQf such development
dockings per week. C. F. Industries transfers bulk fertilizer from barges onto 80
trucks per day. All barge activity takes place within the Mississippi River Critical
Corridor (See also Section 3.8).
1 Aviation
The City o osemount has no public airport or any heliport I facilities in its
jurisdiction. all private airstrip, Jensen Field, is located on niversity of
Minnesota Agricu al Research Center campus, just sout the Dakota
County Technical Co e. The nearest airports to RX ount are the South St.
Paul and the AIdake .airp s. The City does lie wit Ae Critical Airspace Policy
Area which must be protect against the encr- hment of obstructions to air
navigation (structures over 500 t tall).
Aviation Policies
The City intends to:
1. require that towers
subject to variance,
procedures and
requests;
2. require t "heliports comply with the licensing requirem
apprg4h and altitude standards of the FAA and the noise
A as requirements of CUP approval; and
3 rohibit the use of seaplanes in the City.
of Mn /DOT, the
andards of the
4.2 Sewer Plan
The City is provided sewer service by the Metropolitan Council Environmental
Services (MCES) Rosemount Wastewater Treatment Plant and the Empire
Wastewater Treatment Plant. The City will have approximately 770 acres that
will flow to the Empire Treatment Plant that is approximately 75% developed at
this time. The majority of the City sewage flows to the Rosemount Wastewater
Treatment Plant that is located east of US Hwy 52 on 140th Street East. The
City system consists of lateral lines, numerous trunk lines, and five lift stations.
Figure 4.2 -13 shows the MCES interceptor and the City trunk lines.
Currently, the Rosemount VWVTP is an aerated lagoon facility that discharges
into the Mississippi River. It is scheduled for conversion to a conventional
activated sludge treatment facility by the Year 2002. The MCES is aware of the
City's growth rate and is scheduled to have capacity in this plant between 1.45
and 1.76 mgd by 2010 and between 2.24 and 2.87 mgd by 2020. Flows to the
Empire WWP are also identified in Figure 4.2 -13. Currently the City sends
approximately .88 mgd to the two treatment plants based on the latest billing
information provided by the MCES.
147
City of Rosemount
In 1998 the City installed the first segment of the City's Brockway Draw Trunk
Sanitary Sewer which will provide sanitary sewer service to the City's newest
MUSA areas, In 1998 the City also constructed the first segment of a trunk
facility in the US Hwy 52 /County Road 42 MUSA area.
In 1997 the City initiated a study to investigate the feasibility of providing sanitary
sewer service to a portion of the north central part of the City which currently has
individual sanitary septic facilities. This study was performed in response to
requests by residents living in the area concerned about failing septic systems.
When considering cluster ISTS for this area, the soils and prohibitive land costs
led the City to the conclusion that connecting this area to the sanitary sewer
system was the most feasible alternative for providing sewer service to the area.
However, due to funding constraints and city council direction, this area is
remaining either Rural Residential or Transition Residential. A future
amendment to this Comprehensive Plan will be made if MUSA is requested.
Please refer to the North Central Sanitary Sewer Study for more information on
this subject.
In an effort to eliminate sources of infiltration and inflow, the City has replaced
much of its older (50 years +) piping in the central portion of the urbanized area
of the City. This has been at a cost of over one million dollars to the system
users of the City. In the future, the City will be working closely with its Building
Inspections staff to design a program to eliminate groundwater from sump pumps
being directed to the sanitary sewer system.
The Cities of Rosemount and Inver Grove Heights jointly developed a software
system for recording and tracking individual sewage treatment systems (ISTS).
This was done in order to implement the city's newly adopted ordinance (9/19/97)
for installing and maintaining ISTS. The software system is currently being used
for nearly 800 maintenance records as a database with tracking capabilities.
ISTS owners are informed about the status of their operational permits (i.e.,
violation notices). Figure 4.2 -C shows the locations of parcels with private septic
systems.
Figure 4.2 -D provides a five -year phasing plan for trunk sanitary sewer
extensions within the existing /proposed MUSA. The timing in eastern
Rosemount may be contingent on the scale of industrial development and a
corresponding new water supply system. All expansions fall within the projected
flows to Empire and Rosemount WWTPs as identified in Figure 4.2 -A.
Projected Flows from Rosemount — M.G.D.
Facility
2000
2010
2020
Rosemount
0.85
1.65
2.70
Empire
0.25
0.35
0.35
Total
1.10
2.00
3.05
148
1
2020 Comprehensive Plan Update
Figure 4.2 -A
Assumptions for Proiected Flows:
1. 1995 =.20 MGD Empire +.65 MGD Rosemount = .85 total MGD
2. 2000 = 1,000 new households x 250 gpd = .25 additional MGD
=.85 (1995) +.25 = 1.10 MGD
3. 2010 = 2,250 new households x 250 gpd = .55 additional MdD
= 225 additional CA acres x 1500 gpd /acre = .35 additional MGD
= 1.10 (2000) +.90 = 2.00 MGD
4. 2020 = 2,250 new households x 250 gpd = .55 additional MGD
= 325 additional CA acres x 1500 gpd /acre = .50 additional MGD
= 2.00 (2010) + 1.05 = 3.05 MGD
Connections to the metropolitan system (Rosemount interceptor only) are shown
in Figure 4.2 -E with flow projections (MGD) as follows:
Connection Points
1 &2 - Brockway Draw
3 - Clark Road
4 - Conley Ave. North
5 - Conley Ave. South
6 East Edge
2000
2005
2010
2015
2020
0.05
0.50
0.70
0.70
0.70
-0-
0.06
0.13
0.19
0.26
-0-
0.05
0.`09
0.14
0.18
0.06
0.07
0.08
0.12
0.17
-0-
-0-
-0-
0.14
0.24
Note: The above projections assume that 0.50 MGD will flow into the interceptor
system within existing connection points (1.55 MGD will flow via new connection
points numbers 1 -6).
149