1h Approve Comp Sanitary sewer & Water Policy Plans: Authorize prep of Hydrogeologic Well Field Study Project 91-12 /.
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CITY OF
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1 CHANHASSEN
. 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
1 (612) 937 -1900 • FAX (612) 937 -5739
1 MEMORANDUM
I TO: Don Ashworth, City Manager
FROM: Charles Folch, City Engineer
1 DATE: May 13, 1993
I SUBJ: Approve Comprehensive Sanitary Sewer and Water Policy Plans; Authorize
Preparation of Hydrogeologic Well Field Study .
Project File No. 91 -12
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At their regular meeting on Monday, April,26, 1993, the City Council received the draft
1 plans for the Comprehensive Sanitary Sewer and Water Policy Plans as prepared by
Bonestroo, Rosene, Anderlik & Associates (BRA). The following week this topic was
discussed with the City Council at a informal work session which was held Wednesday, May
I 5, 1993. Mr. Bob Schunicht, Mr. Phil Gravel and Mr'Dick Foster of BRA were present at
the work session to provide the City Council with a more detailed presentation of the results
I and findings of these comprehensive sewer and water policy plans. These plans have
basically outlined a road map for the locations of futu* trunk utility infrastructure and a
capital improvement program schedule based on anticipated City goals to meet the needs
of the City. ""
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One of the key elements =ci the - Water volicsk conducting a hydrogeologic
I reconnaissance study to determine locations:and,pr capacity Ware. wells and site
locations. As discussed in their report and at the work session, it is predicted that 6 to 7
more wells will ultimately'need to be located at each of the Galpin Boulevard and Lotus
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Lake well fields. The need for perforg.�this st>�dy, was a�"- �scfitssed at the informational
work session.
I I have asked BRA to prepare a detailed prop outlining the work tasks to be performed
as a part of the hydrogeologic study and a cost estimate accordingly. The estimated cost to
complete this study is $52,000. It should be noted that this study will be divided into three
1 separate phases and the results and findings and information available from each phase will
likely affect the amount of work effort needed to complete the next succeeding phase.
Therefore, staff would propose to present the findings from each phase to the Council prior
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1 tle PRINTED ON RECYCLED PAPER
Don Ashworth
May 13, 1993
Page 2
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The necessity to complete this hydrogeologic study expeditiously is very important to be able to
1 designate locations of future well sites and allow the City to be able to secure these site locations
before they may be potentially lost to land development. It is therefore recommended that the
City Council approve the Comprehensive Sanitary Sewer and Water Policy plans and authorized
1 BRA to conduct the hydrogeologic study for defining future well site locations, Project No. 91-
12.
ktm
Attachment: Letter from BRA dated May 5, 1993
' c: Dave Hempel, Assistant City Engineer
P tY g
Jerry Boucher, Utility Superintendent
Phil Gravel, BRA
' Manager's Comments: The costs of the study referred to above are no different than the costs
associated with the actual construction of the trunk sewer and water facilities. As the Council
' is aware, the first phase of the Upper Bluff Creek trunk sewer project began this past fall and
bonding occurred for that phase. Costs incurred this year to complete the second phase,
including the study costs in this proposal, will be part of bonding conducted later this year.
' Study costs were included in the engineer's estimates of overall revenues anticipated to be
derived through assessments in comparison to total costs. It should also be noted that in addition
to each phase of the study being brought back to the City Council, this 3 -phase study work will
in all likelihood traverse the two year construction years of 1993 and 1994. Approval is
recommended.
1 DWA (5- 18 -93)
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690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 is
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(612) 937 -1900 • FAX (612) 937 -5739
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MEMORANDUM
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TO: Todd Hoffman, Park & Recreation Director
FROM: Scott Harr, Public Safety Director
DATE: May 17, 1993 I
SUBJ: Emergency Management Plan
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Attached is an article from the 5/9/93 Star & Tribune. It caught my eye because of the
portion of the article I've underlined regarding what that community did to help people I
that were being temporarily housed. While our emergency plan provides for temporary
shelter, an area that Park & Recreation might be ideally suited for is to help the families
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that are taking shelter by keeping spirits up, etc. When you have had a chance to look
this over, can we get together to discuss this idea further? Thanks, Todd.
cc: Don Ashworth, City Manager I
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t wOr PRINTED ON RECYCLED PAPER 1
40 m . r �� -
t � C i -z .h,...,4-' . , '.. • .. -- .21_ 9 - ffi?v - " , Y ■
_ 1 , ,.4.-4."‘c a , . h _ - fir y" y ,
�eir homes t i ^ ,a • f. . i - , 7 �� . 1 , • , • t i L '` , p is ., a ..- � b � . •
1 Marshall , y s - .. ;: . v „ . i c , � i a ' ..4 0 `. �' 4.?
:L oam ` r " - , sq t s a i, DPW 4i 1 , e � . f
rshall, Minn. ` ; y 3 r . 7t. , •
ut 40 residents were evacuated ' 1 t u � ,I L F` ' • 4 ' ; !� ��: s;
m their homes in Marshall Satur- < a ,)o , t -. = -
y after severe storms caused the ; r- _ , c .a �yy��, p sz. wood River to flood the night .> Y � r „ ,, - .'../
re. , T. r
ne man was in stable condition at
ner Memorial Hospital after suf • . , ,, � I
g severe cuts when his farm- - r ' 3 """,� > ' ' , .
s e was hit by the storms Friday, a y :$ 4 _
u rse said. : , . t. s "L;- : x a r ,
. k t rt
storms were part of a system that . k
ned 70 tornadoes across the cen ,._ �K -,,, , '' , i i 3'
plains from South Dakota and
innesota south to Texas.
'
e orologists expected the Twin = �°
s to get up to 1.5 inches of rain F
fpm last night through today, but ;' • 1. did not predict the severe prob ti' ' .,
that the storm caused in south- '1
ern Minnesota. .r —._- .. „....,.....-1,,,L1- ...,...- __,..
Associated Press
Lyon County, where Marshall is
Floodwaters covered the north end of Pipestone Saturday after a severe storm struck Friday. The rain
ms continued on page 2B part of a storm system that produced 70 tornadoes and spanned an area from Minnesota to Texas.
- - - - - — _
f Storms/ River forecast to crest ____ __ ____ _____
at 18 feet above flood stage
I Continued from page 1B Hwy. 23 between Pipestone and In-
terstate Hwy. 90 was closed yester-
located, tornadoes heavily damaged day, the State Patrol said. Officers
I at least two farms, and heavy winds said that the entire stretch of road
damaged a barn 3 miles east of Mar- was not under water, but that many
shall late Friday. areas were and there was consider-
able erosion along the shoulders.
evacuated sh all t
The
I took shelter at East Mar Side Elementary Other washouts were reported in
School, said Principal Bill Swope. Rock, Pipestone, Murray and Lyon
"We've got kids playing ball in the counties.
gym, and two of our restaurants in
1 town are on deck to do catering,” he Winds were clocked at more than 60
said. "W e're well ire ap red.” miles per hour when the storms
moved through Redwood County,
The Redwood River flooded where it which also was pelted with large hail.
meets a diversion channel on the
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north side of town, according to the On Thursday, high winds flattened a
State Patrol. The main downtown vacant trailer home, destroyed a dou- `
area was not affected, but roads and ble garage and ripped off the roof of
towns all over the area were cut off the only tavern in the southwestern
by the heavy rains. Minnesota town of Florence. I
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The National Weather Service posted "There's still a tremendous amount
a flood warning for Marshall and of rain, but for the most part it's '
I reported unofficial rainfall totals of going to miss the area that was hit
up to 9 inches in the southwestern [Friday] night," said Todd Krause,
Minnesota area. The Weather Ser- meteorologist with the National
vice forecast that the Redwood River Weather Service.
would crest last night near 18 feet, 4
feet above flood stage.
Friday's storm pummeled the area, i
ripping roofs off barns and downing
I trees and power lines. Several funnel
clouds were reported.
t
ra, 9/4 2— --
Otto G. Bonestroo, PE Howard A. Sanford, PE. Michael P Rau. P.E. Mark D Wallis. P.E
Bonestroo Robert W Rosene, PE* Keith A Gordon. P.E Philip 1 Pyne. PE. Miles B. Jensen. P.E.
ki Joseph C. Anderlik. P.E. Robert R Pfefferle. P.E. Agnes M. Ring, A.LC.P L. Philip Gravel 111, P.E.
Marvin L. Sorvala. PE. Richard W Foster, P.E. Thomas W Peterson, PE. Karen L Wiemen, P.E.
Rosene Richard E. Turner. P.E. David O. Loskota, P.E. Michael C Lynch, P.E. Gary D. Knstofitz, P.E.
MOE Glenn R. Cook. P.E. Robert C. Russek, A.I.A. James R. Maland. P.E. F Todd Foster. P.E.
Anderlik &
Thomas E. Noyes. PE. Jerry A Bourdon. P.E Jerry D. Pertzsch, PE. Keith R. Yapp. PE.
Robert G. Schunicht. P.E. Mark A. Hanson. PE. Kenneth P Anderson. P.E. Douglas J. Benoit. P.E.
A ssociates Susan M Eberlin. C.P.A. Michael T. Rautmann, P.E. Mark R. Rolfs, P.E. Shawn D Gustafson. PE
*Senior Consultant Ted K. Field. PE. Mark A. Seip. P.E. Cecilio Olivier, PE. I
Thomas R. Anderson. A.I.A. Gary W Morten. P.E. Charles A. Erickson
Engineers & Architects Donald C. Burgardt, P.E. Daniel J. Edgerton, P.E. Leo M Pawelsky
Thomas E Angus, PE. Allan Rick Schmidt, P.E. Harlan M. Olson
Ismael Martinez, P.E. Philip J. Caswell. P.E. James F Engelhardt
May 5, 1993 1
CITY OF H ANHASSEN 1
Mr. Charles Folch EMBED
City of Chanhassen MAY 1 2 1993 1
690 Coulter Drive
Chanhassen, MN 55317 ENGINEERN DEPT.
I
Re: Well Field Plans
File No. 393 Gen 1
Dear Charles:
As requested, we have prepared an outline of the steps necessary to complete well field 1
studies for the Lotus Lake and Galpin Boulevard well fields. The objective of the study is
to find 6 to 7 sand and gravel or Jordan Sandstone well sites for both the Galpin and Lotus 1
Lake well fields. The study will identify the water supply options for the City and find the
optimal blend of aquifers and well locations to provide a sustainable supply of potable
water. The study will be conducted in three phases: 1
Phase I - Regional Hydrogeologic Reconnaissance and Contamination Assessment
Phase II - Geophysical Exploration 1
Phase III - Test Drilling
Phase I will consist of two parts as described below: 1
PHASE I, PART A: REGIONAL HYDROGEOLOGIC RECONNAISSANCE 1
Currently, the City of Chanhassen has both sand and gravel wells and Cambrian Jordan
Sandstone wells. The wells are excellent producers with production capacities ranging from
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750 to over 1200 gpm. The Jordan sandstone is present throughout most of the City of
Chanhassen, whereas the sand and gravel deposits with the greatest water production
potential are present in bedrock valleys. For this phase of the study, all available geologic 1
information will be compiled for the Chanhassen area. The available sources of information
that will be collected will include reports from the state geologic survey and the USGS, and ,
logs of domestic and high capacity wells. This information will be compiled to produce
maps which show the depth to bedrock, the elevation of the bedrock surface, and areas
which appear to be favorable for high capacity sand and gravel well sites.
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2335 West Highway 36 • St. Paul, MN 55113 • 612- 636-460
Mr. Charles Folch May 5, 1993
City of Chanhassen
' Page 2
1 PHASE I, PART B: CONTAMINATION ASSESSMENT
All reported potential sources of ground water contamination in the vicinity of the
' Chanhassen area will be identified and located. All available information from the
Minnesota Pollution Control Agency such as known chemical spills, active and abandoned
landfills, solid waste transfer, storage and disposal storage tanks will be plotted to show
1 areas of known or potential ground water contamination.
At the conclusion of Phase I, the prepared maps will be included with a report which will
' discuss the methods used and present the relevant conclusions. At this time, we will meet
with the City to present the results and discuss the scope for the next phases.
Phase II (Geophysical Exploration) would be completed as determined by the results of
Phase I. The work associated with Phase II would consist of resistivity study to verify
' subsurface conditions. The resistivity study would be completed in conjunction with a
subcontractor. Depending on the results of Phase I, all or part of the Phase II work could
be eliminated.
' Phase III (Test Drilling) will include test drilling of potential sites to determine well
characteristics. Much of the work will be completed by a subcontracted geotechnical firm.
The work associated with this phase is highly dependent upon the results of the first two
phases. The precise scope of Phase III will be determined when phases I and II are
completed.
A final report will be prepared at the completion of all three phases. As stated above,
Phase II could possibly be eliminated and the scope of Phase III could vary widely. Our
' best estimate of the project costs is shown below. A more precise estimate of the Phase III
costs will be available once Phase II is completed. We will request prior approval if any of
the costs shown below are expected to change.
Phase I - Reconnaissance Study $ 7,000
' Phase II - Geophysical Exploration 15,000
Phase III - Test Drilling 25,000
' Final Report 5,000
TOTAL WELL FIELD PLANS $52,000
It is important that this work be completed soon to enable the City to secure its future well
sites and establish a well head protection program. The personnel working on this project
will include John Jansen, Dick Foster, Bob Schunicht, and me.
Mr. Charles Folch May 5, 1993
City of Chanhassen
Page 3
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We look forward to receiving a notice -to- proceed and working with you on this project.
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Please feel welcome to contact me if you have any questions.
Sincerely, 1
BONESTROO, ROSENE, ANDERLIK & ASSOCIATES, INC.
k litL`S. 1
Phil Gravel
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