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1e. Authorize Preparation of Plans & Specifications for Well No. 7it f n n n n fl MEMORANDUM CITY OF ' CHANHASSEN 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937 -1900 • FAX (612) 937 -5739 TO: Don Ashworth, City Manager FROM: Charles Folch, Director of Public Works /City Engineer DATE: March 8, 1994 SUBJ: Authorize Preparation of Plans and Specifications for Well No. 7 Project No. 94 -3 #Alidli R CIN AdhitltlStfW rsirlow ✓1)i)A- 1GlodW � 70 - X15° Deb SuWtted to Commission � pa ~ 'µ Eo Gouncll During the staff presentation of the 1994 Public Works goals I had the opportunity to discuss with the Council one of this year's imperative capital improvement projects which is the addition of Well No 7 to the City's water supply system. This improvement project was identified in the approved comprehensive water supply plan and programmed funding was included in the 1994 budget. The consulting engineering firm of Bonestroo, Rosene, Anderlik & Associates was commissioned during the summer of 1990 to conduct the hydrogeologic study which will provide information on appropriate well site regions which meet design flow requirements. This study is nearing its completion and, as such, pertinent information will be incorporated into the preparation of plans and specifications and identifying potential locations for the well site. Mr. Richard Foster of Bonestroo has provided a project cost estimate along with an anticipated project timetable. The intent is to have this facility on line by the fall of this year. Engineering fees for the project will be based on the previously approved standard engineering services contract agreement with Bonestroo. I also mentioned to the Council of the new state mandates requiring municipalities to develop water conservation and emergency action plans for the water supply system. Bonestroo has estimated this additional work will take aDnroximately 3.0 to 46:1miro to nnm hlptp It is therefore recommended that the .City Council authorized Bonestroo, Rosene, 'Anderlik & Associates to prepare the project plans and specifications for the construction of Well No. 7, Project No. 94 -3 and, in concert, prepare the rr . r.'re ! , =pater conservation emergency action plans. Attachments: 1. L•- cation map. 2. Letter from Dick Foster dated March 8, 1994. c: Dave Hempel, A_. :�:..t City Engineer ' Jerry Boucher, Uti.ty Superintendent Phil Gravel, BRI Dick Foster, BRt:. . gAeng\chada\cc \well? ,.. F Existing Booster Sto Note: This well field will require a total of seven wells at ultimate development. Locations and spacing of future wells should be determined as development in this area occurs. HIGH PRESSURE ZONE a c� \\ HARMSON l LAKE i Future Well Field • Connection 1250 GPM to High Zone Pressure Reducing Vale 25 —E91 -0010 e FJ • �I V 42 LAKE LUCY RD. Pressure Zone Boundary • � I LOW PRESSURE ZONE • 5-690-02 K. Existing r Well #3 Future Well Field Connection 5,400 GPM to Low Zone 25 -690 -0010 I Possible Future Treatment Plant Site 9 N o 2W sO p swig In f*e eY � • 29 Pressure Node 25-- 010 --1220 I • Potential Well Site 255-691-0020 0 Existing Well Site Sonestroo Galpin Boulevard Well Meld Schematic 0 Rosene N Anderlik b Chanhassen, Minnesota FIGURE 4 M Associates Water Supply and Distributic�a 5+ � 393\39303\39303F04 Feb. 1993 r.OMM. 39303 Bonestroo Otto G. Bonestroo, P.E. Robert W Rosene. PE' Joseph C. Anderlik, P.E. Rosene Marvin L r PE. Richard E. Turner. P.E. T mom Anderlik & A ssociates Glenn Cook, RE. ThomasE oyes,, RE. Robert G. SChunicht. P.E. Susan M. Eoerlin. C P.A. Robert R. PfeHerle. P.E. *Senior Consultant Engineers & Architects Richard W Foster. P.E. March 8, 1994 Mr. Charles Folch City of Chanhassen 690 Coulter Dr. Chanhassen, 1V N 55317 Re: Well No. 7 Project No. 94 -3 Our File No. 39322 Dear Mr. Folch: Howard A. Sanford. PE. Michael P Rau. P.E. Mark D. Wallis, P.E. Keith A. Gordon, P.E. Philip J. Pyne. P.E. Miles B. Jensen, P.E. Robert R. PfeHerle. P.E. Agnes M. Ring, A.I.C.P L. Phillip Gravel Ill. P.E. Richard W Foster. P.E. Thomas W Peterson. PE, Karen L. Wiemeri, P.E. David O. Loskota. P.E. Michael C. Lynch. PE. Gary D. Kristofitz. P.E. Robert C. Russek. A.I.A. James R. Maland. P.E. F Todd Foster. PE. Jerry A. Bourdon, P.E. Jerry D. Pertzsch, P.E. Keith R. Yapp. P.E. Mark A. Hanson, P.E. Kenneth P. Anderson. P.E. Douglas J. Benoit. P.E. Michael T. Rautmann. PE. Mark R. Rolfs, PE. Shawn D. Gustafson. PE. Ted K. Field. P.E. Mark A. Seip. P.E. Cecilio Olivier, PE, Thomas R. Anderson. A.I.A. Gary W Morien, P.E. Charles A. Erickson Donald C. Burgardt, P.E. Daniel J. Edgerton, P.E. Leo M. Pawelsky Thomas E. Angus, P.E. Allan Rick Schmidt, P.E. Harlan M. Olson Ismael Martinez, P.E. Philip J. Caswell. P.E. James F. Engelhardt The City of Chanhassen's Water Supply and Distribution Plan projected that Well No. 7 will be required in 1994 to meet increasing water demands. The report also recommended that the well be located in the Galpin Lake Well Field to balance supply between the City's two well fields. Because of the timing and desired location, Well No. 7 is expected to be a Jordan sandstone well similar to existing Well No. 3. The first step of the design process will be to identify an approvable site for the well and to prepare the water conservation and emergency action plans recently required for all new wells. We assume that most of the information for these plans has already been completed by the City in the form of sprinkling bans and plumbing codes. Identification of a well site will be assisted by the City's Well Field Study just being completed. It is anticipated that the well will be located in the High Pressure 7.one (north of Highway 5 and west of Galpin Boulevard). Depending on the precise well location, we may be able to eliminate the existing high service booster station on Galpin Boulevard. This would save some costs, since the booster . station is in need of repair at this time. The estimated cost for the well, pumping facility, and connecting water main is as follows: Iteth B Well Well Pump Pumrhouse Water Niain jr, :.)total + 25% Indirect Costs E €i` _ated Project Costs Cost Estimate 160,000 40,000 150,000 20.000 $370,000 92.000 $462,000 5 West Mighe►vay i." : , i. i'aul, MN SS113 0 612- 636 -4600 Mr. Charles Folch March 8, 1994 City of Chanhassen I Page -2- We will complete the well and pumphouse design on a fee basis according to the terms of our standard contract with the City. We will also prepare the required water conservation and emergency action plans on a per diem basis. This work should take 30 -40 hours. Yours very truly, BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC Ri and W. Lster Phil Gravel RWFlPG:pr As the well site has not been selected, costs relating to well depth and water main length could be affected. The proposed total project cost does not include the costs for land acquisition. A ' minimum of a 100 foot by 100 foot square parcel will be effective to locate the well on City owned land if possible. required. It would be most cost If the well house is located on park property, the structure could be incorporated into a picnic shelter. ' The proposed schedule for the project is as follows: ' Event Timetable Authorize project plans and specifications March 14, 1994 ' Approve well specifications April 11, 1994 Award well contract May 9, 1994 Start well construction May 1994 ' Approve pumphouse plans and specifications July 18, 1994 Award pumphouse contract August 22, 1994 Complete well construction October 1994 1 Start pumphouse construction October 1994 Complete pumphouse construction April 1995 We will complete the well and pumphouse design on a fee basis according to the terms of our standard contract with the City. We will also prepare the required water conservation and emergency action plans on a per diem basis. This work should take 30 -40 hours. Yours very truly, BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC Ri and W. Lster Phil Gravel RWFlPG:pr