1g. Well No. 5 Plans & Specs li
II ,
CITY OF
1...i.......
,,,, i _.,,
. - 7 %"- CHANHASSEN
1 .
Ar 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN,
MINNESOTA 55317
I (612) 937-1900 • FAX (612) 937-5739
Action by City Admini^trator
IMEMORANDUM En,' _ __ter,1.7iWer
T0: Don Ashworth, City Manager Re;c:' _�.___ T __ _
FROM: Gary Warren, City Engineer DE, ,___Date £u'. .sfcn
DATE: April 18, 1990 !kit - i,o,oci
ISUBJ: Approve Plans and Specifications for Production Well for 4'7.3 -10
Well No. 5; Authorize Advertising for Bids
IIImprovement Project No. 89-4A
I Over the past several months the City's well contractor has been busy drilling
and test pumping the test well and observation well at Wellhouse No. 2 near
South Lotus Lake. As will be recalled, this is a glacial drift well which we
hope, from review of the hydrogeology, to produce approximately 500 gallons per
I minute. Our goal is to place this well in service in a relatively short period
of time and at half the expense of the deeper Prairie du Chien (bedrock) well.
11 I am pleased to report that the test well and pumping have turned out to be
quite productive and indications at this point in time indicate that the City
may be able to produce close to 700 gallons per minute from this site. The
I water quality results for this well also indicate a good quality content with
iron and manganese undetected which is highly unusual for a drift aquifer.
Based on these favorable results, the attached plans and specifications have
II been prepared for construction of the production well and discharge piping
modification at Wellhouse No. 2. It is hoped that construction of the
production well can continue to proceed on schedule such that this additional
1 capacity can be brought on-line in July of this year. The engineer's estimate
for construction of the production well and piping is $90,700.
It is therefore recommended that the attached plans and specifications prepared
1 by Bruce A. Liesch Associates, Inc. be approved for Production Well No. 5 and
that authorization be given for advertising for bids.
I ktm
Attachment: Plans and Specifications
IIc: Jim Bullert, Liesch Associates
II
II