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Home My WebLink About5.b. Update on Valley Oak Pond Outlet, City Project #197 f y CITY OF ROSLMOUNT SXBCIITI'VE SIII�2ARY FOR ACTION CITY COUNCIL MEETING DATE: May 4, 1993 AGENDA ITEM: Update AGENDA SECTION: Valley Oak Pond, City Project #197 Old Business PREPARED BY: Ron Wasmund AGEND Public Works Director/Building Official �� ATTAC�I+TTS: Memorandum f rom SEH APL'�ROVE B . Memo from City Engineer � � �,�� Staff has reviewed the need for the storm water holdin pond project known as Valley Oak Pond Outlet, Project #197. As you may recall, the project was originally scheduled to be constructed in 1990 but has been delayed because of difficulties obtaining easements for Pond Number 4. Upon completion of the review, Staff and our Consulting Engineers have concluded that the project should proceed now as a phased project. Phase I including everything except Pond Number 4. This would allow for acquisition agreements for Pond Number 4 to be reached. Phase II would be Pond Number 4. Proceeding with Phase I now allows the City to preserve the commitment for monetary contribution from Ducks Unlimited. It provides for additional run-off storage which is critically needed and eiiminates a high maintenance eye sore from developed rear yards. We are asking for your support to proceed with this project. RECOIrIl�tENDED ACTION: None Required COUNCIL ACTION: 2 f j MEMO TO: MAYOR McMENOMY COUNCIL MEMBERS: KLASSEN STAATS WILLCOX WIPPERMANN FROM: CITY ENGINEER OSMUNDSON DATE: APRIL 29, 1993 RE: UPDATE-VALLEY OAK POND OUTLET CITY PROJECT #197 This item is on the agenda to update the Gouncil on the VaHey Oak Pond Outlet Project. Dave Simons, P.E., the project manager #or Short, Elliott, Hendrickson (SEH} has provided you with the attached memorandum which explains the technical aspects of the project, Dave and Staff will be at the meeting to present the proposed improvements and answer any questions Council may have. Tfiis project as originally planned would have provided the ultimate outlet for drainage in Section 31 and specifically the Winds Crossing area. As you may be aware, the original design of the existing pond in Winds Crossing was to be a "dry" pond which is rather aesthetically unappealing. The project was to be assessed over a large area but was later changed to be funded totally from the storm water utility. The proposed project had the existing pond in Winds Crossing draining through two ponds south of it on the Gergen property, north of 160th Street, into a fourth pond in Empire Township within the Empire Aggregate property south of 160th Street. Negotiations for storm water ponding easements were undertaken with the Gergens and Empire Aggregate. The Gergen property has been acquired, however the Empire Aggregate property negotiations did not come to any conclusion. The Empire Aggregate Company has mineral rights and wanted a large sum of money for those rights that they would lose due to ponding water. Negotiations were then undertaken with an adjacent property owner to the east for the purposes of a final outlet pond. However, these negotiations have also not come to fruition due to estate and trust issues. We will continue to pursue the easement for the fourth pond which is needed for the ultimate development of Section 31. However, we feel it is imperative to move #orward on this project for an number of reasons. First and foremost is that we can greatly increase the amount of storage of storm water for the existing pond. As you may be aware, we have pumped this pond numerous times in the past few years. This is a costly maneuver. Secondly, the residents surrounding the pond have expected the project to be undertaken in the last couple of years and Ducks Unlimited has set aside (through Koch Refinery), 530,000 for making these ponds wildlife areas. The suggested schedule for the project would be as follows: May 4, 1993 Council Update May 10, 1993 Utility Commission Update May 12, 1993 Meeting with Affected Residents May 18, 1993 Accep� Plans & Spec's/Order Ad for Bid June 11, 1993 Bid Letting June 15, 1993 Award Contract June 28, 1993 Start Construction September 1, 1993 Substantial Completion Staff recommends that we move forward on this project following the above schedule. We will bring this item back to Council for pian and specification approval on May 18. ` 0=�:23l9� 15:-�1 F.�T 612 �90 2150 SEH ST. PAUL �1402:00� �� MEIV1(�RANDUM � : O ST.PAUL�MN ` D M1NNcttP�LfS.MN ❑ S7 CLCklD.MN fl CfiIFPEwA FALL,�.Wl Q zNAOISON.W/ TO: Bud Osmundson, City Engineer/Assistant Publi+c�+lfarks Director �p�: David F. Simans,P.E. DATE: Apri128, 1993 RE; Rvsemounf,Minnesota Valley C)a.�c Pand C}utlet City Project l�to. 197 � SEI-�Fi�e No: 89245.03 From our mEetir►g last Friday,I undersi�nd that the Ciiy is proceeding with Phase I of the above referenced prc�ject.Phase I of the praject will in�iude all work north of I64th Street, and Phase II will include the remaining work located south af 16C}th street- The purpose of this memorandum is to provide you with infaxmation on �.ie added level of storm water protection which can be expected with construction of Phase L pp��ri tio af th�Project The project Iocation is shown in Exhibit A. Phase i of the praject includes construction of Ponds 2 and 3, and the interconnecting piping. Some grading work will also be done in Pond 1 under this phase of the praject. Pond 4 and the connectivn beiween P4nds 3 and 4 will be canstzu�ed under Phase II. Phase II will be �onstructed as soon as easement negotiations for Pond 4 are camplete. Currently, only Pond 1 is in place. The �onnection between Pond 1 and Pond 2 is also in place, but is bulkheaded at both ends. Therefore, Pond 1 curren�lY functians as a landlocked basin with no autlet. There is a larg;e watershed contributing storm wat�r to this small landlociced basin. 7his has resulted in the oecasional n�ed to pump the pond down to protect the hames which fixlly suz�round the pond_ �xi ti �an_. d PrQ�osed S oraa� Using the existing low floor elevation adjacent eo the pond, and the 5 foot fre�board requirennent f4r landlocked basins,the existing availabl�storage in Fond 1 is estimated to ' 0'�/2��93 15:�l1 Fi11 612 480 Z15v SEH ST. P�UL �IOOS/00-� Memoranduul April28, I993 Page 2 be about 5.6 acre-feet. A�ter construc#ion of Ponds 2 and 3 in Phase i, the total available storage will incr2ase to about 29.9 acre-feet. This will not satisfy #1ie ultimate storage requirement of I21 acre-feet,but it wiXX increase tlse ava:7able sfr�rage by over404 percerat• The ultimate storage requirement of I2'� aae-feet will be obtauted when Phase II of the project is coxztiplEted. Construction of Phase I will greatly redu�e the frequ�ncy of pumping in nand Z. If you have any questions or need additional information,please �ontact me. L7FS/cih . attaehment , � ^ �4iGO/bv la:�1 t:93 �1L 4bU Glau ��n J1. r�UL l�C UU�iUU� s � � . � . �� .y . 4 �, � �� ,fi W i^ � r�i .IS/•�;, 1 y A ��' � - � � � . � � . n� •� 1 A . . • � r + � ^"'��r '! !'�'- . .� . � i � �, a f .� � .�, � .. ` 1 •:��' - / . s 1� i'. � ��2 ' . !' �•.. �^.•j• ._ � , � ^ �ttl �� , . i I.M F +�i � . . . . V Y :� � .yo • +. •fi. `,� a.� ?� r s ,aTt~ 2��1. •.:� �• �..' _•_•r� • i = . �e w � ! � : 4� W • �t • a ea . . � �� . 8 H ,s • ' ' P• ^",j �� rwy8rw�5' . . . 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