1k. Change orders Well No. 6 1
CITYOF , _...........
40: 1 , 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317
1 i (612) 937 -1900 • FAX (612) 937 -5739
I MEMORANDUM a
TO: Don Ashworth, City Manager 1-. 2 3 -J7
1 FROM: Charles Folch, City Engineer
I DATE: January 22, 1992 � . / 5a..-
SUBJ: Approve Contract Change Order Nos. 1 and 2 for
I Well No. 6 - Project No. 91 -1
Attached you will find Change Order Application Nos. 1 and 2 for
I the Well and Pumphouse No. 6 Projliet No. 91 -1. Change Order No. 1
involved the addition of two fire sprinkler heads and associated
piping to meet building code requirements related to the fire
I protection as notified by the City of Chanhassen Building
Inspection Department. This change to the original contract
involves an increase of $1,319 Change Order No. 2 involves a
modification to the development process of the well from the
I specified "water jetting and airlift process" to the "surge block"
method. Since the subsoil at the well screen depth was found to be
a very coarse material, the "surge block" development method
I provided a more thorough development of the well, and in the long-
term will benefit by restricting sand intrusion to the water
system. This change to the original contract is an additional
I $908.25.
The original contract price was $147,482. With the approval of the
two change orders, the revised contract amount will be $149,710.02.
1 Attachments: Change Order Nos. 1 2
c: Jim Bullert, B. A. Liesch
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I tool PRINTED ON RECYCLED PAPER
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CHANGE ORDER
1 Order No. 1
Date 12/20/91
Agreement Date 5/30/91
Name of Project: Chanhassen Well and Pumnhouse #6
Owner: City of Chanhassen
' Contractor: Gilbert Mechancial Contractors, Inc.
The following changes are hereby made to the Contract Documents:
Add two fire sprinkler heads and related piping to increase the number of sprinklers
from one to three in the well house control room.
Justification:
U Per request by the City of Chanhassen building inspections department.
' Change to Contract Price: $1.319.77
1 Original Contract Price: $147,482.00
' Current Contract Price adjusted
by previous Change Order: $147,482.00
Revised Contract Price: $148.801.77
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The date for completion of all work will be October 30, 1991
(Date)
Contractor En 'neer Owner
By: B • JvNA-j LX.# By:
Date: / Date: 1 Date:
1 CO -1
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CHANGE ORDER
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Order No. 2
Date 12/20/91
Agreement Date 5/30/91 1
Name of Project: Chanhassen Well-and Pumohouse #6
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Owner: City of Chanhassen 1
Contractor: Gilbert Mechancial Contractors. Inc.
The following changes are hereby made to the Contract Documents:
Change the method of well development from the specified water jetting and air
lift to a more aggressive method of surge block.
Justification: 1
The geological formation in which the well screen is located is very coarse, the
surge block development provides a more thorough development, resulting in a well
that pumps minimal sand.
Change to Contract Price: $908.25 1
Original Contract Price: $147.482.00 1
Current Contract Price adjusted
by previous Change Order: $148,801.77
Revised Contract Price: $149.710.02
The date for completion of all work will be October 30, 1991
Contractor En 'neer Owner 1
By: /1/1,4' , B , ,,_. B
Date: //7/ Date: 1Zhc/91 Date:
CO -1 1
I GILBERT
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Mechanical 8
November 26, 1991
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Mr. James Bullert P.E.
Bruce Liesch Assoc.
13400 15th Avenue North
Plymouth, MN 55441
RE: Chanhassen Pumphouse
' Dear Jim:
•
Enclosed is a bill for extra work done by Traut Well approved by your
firm. Please issue us a change order for the following:
Mobilization $700.00
Chemical Tank $165.00
Sub $865.00
5% overhead & profit $43.25
' Total change order request $908.25
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Very Truly Yours,
Gilbert Mechanical Contractors, Inc.
' Walter J. ( a' y)
1 Bonfe
Project Manager
WB /ks
Enclosure
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3012 Clinton Avenue South • Minneapolis, Minnesota 55408 • 823 -9156
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