1b Marsh Glen Trail Change OrdeC1TYOF
CHANH4SSEN
PO 13ox 147
Clmnl~n, MN 55317
Administration
Phone: 952.227.1100
Fax: 952.227.1110
Bulldlmg Inspections
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Fax: 952.227.1190
Engineering
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Fax:. 9,52.227.1170
Finance
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Park & RecreaUon
Phone: 952.227.1120
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~oo Center
2310 Coulter Boulevard
Phone: 952.227.1400
Fax: 952.227.1404
Planning &
Natural Resources
Phone: 952.227.1130
Fax: 952.227.1110
Public Works
1591 Park Road
Phone: 952.227.1300
Fax: 952.227.1310
Senior Center
Phone: 952.~1.1125
Fax:. 952.227.1110
Web Site
www. d.~.mn.~
FROM:
Todd Gerhardt, City Manager
Todd Hoffman, Director of Parks and Recreation
DATE: March 19, 2003
SUBJ:
Approval of Change Order No. 2, Marsh Glen Trail
Attached please find a memorandum from Paul Paige of Hoisington Koegler
Group detailing the need for a substantial change order on the Marsh Glen Trail.
This trail connector is situated adjacent to Rice Marsh Lake, affording future trail
users some inspiring views. Unfortunately, tmilway ali~tmments situated near
marshes are also prone to exhibiting poor soils. In this case, soil borings were
conducted that identified some unstable soil would be encountered in the
construction of this trail. The trail desi~ and bid package accounted for the
amount of poor soils estimated to be encounterecL
The amount of poor soil actually present tamed out to be substantially greater than
initially anticipated. In order to "get to the bottom" of the bad soil deposits under
the trail alignment, an additional 609 cubic yards of soil was excavated at a cost of
$15 per cubic yard. Backfilling this sub-cut trench necessi~ the import,
placement, and compaction of select granular fill at a cost of $28.54 per cubic
yard. Other added costs include $4,757.50 in equipment and labor to haul and
grade these additional soils, and $350 for a culvert extension. On the bright side
of things, staff was StW. c. essful in negotiations to dispose of the majority of this
excess material on private property adjacent to the project site. In doing so, the
City avoided significant tmeldng costs to haul the material off site.
The original contact sm for this project was $99,655.00. Change order No. 1 for
an additional culvert cost $3,927.00. This Second change order for soil correction
cost $31,623.36, bringing the total conuact to date to $135,205.36.
RECOMMENDATION
It is recommended that the City Council approve change order No. 2 for the
Marsh Glen Trail Project in the amount $31,623.36, bringing the total contract
award to $135,205.36.
ATTAC~NT
Change Order No. 2, Marsh Glen Trail
The City of Chanhassen * A growing community with clean lakes, quality schools, a chaJming downtown, thriving businesses, winding trails, and beautiful padre. A gmat place to live, wodr, and play.
Hoisington Koegler Group Inc.
To:
Todd Hoffman, Park and Recreation Director, City of ~ Minnesota
Paul Paige
Change Order g2 for Marsh Glen Trail and Pedestrian Bridge
March 18, 2003
The Marsh Glen Trail and Pedes~ Bridge is being built directly adjacent to a wetland complex. Due to
the proximity to the wetland, the soils are wet and unstable and special subgmde preparation is needed.
Prior to construction, American En~neering Testing, Inc., a geotechnical consulting firm, took soil bc~-ings
in the trail area and recommended subgrade preparation to ensure that the trail would be stable and resist
frost heave. American Engineering Testing recommended that all organic topsoil be removed and that the
resulting subcut should be filled with select granular borrow wrapped in geotextile fabric. The ~nimum
depth of subcut in unstable areas was to be 1'-~" to allow for at least 1' of select granular borrow under 6"
of Class 5 Aggregate Base. The original contract sum is based on this cross section.
During construction, to ensure that the Contractor had completely removed the organic topsoil layer,
American Engineering Testing was asked to inspect the trail subcut. Upon inslw~on, American
Engineering Testing found that along much of the ~ the organic topsoil layer extended several feet
deeper than originally anticipated. A representative from American En~neering Testing was on site
supervising the necessary removal of organic topsoil from the subbase from December 18, 2002 to
December 28, 2002. During this time, 609 C.Y. of od_difional organic soil needed to be removed and then
filled with select granular borrow in order to ensure a stable subbase for the trail. The Conlract~ then had
to relocate the removed organic material to an on site location. All of this work was outside of the original
contract sum,
In addition to the above work, Sunram Construction has been asked to extend a 12" CMP culvert that has
been placed under the trail in a low spot to allow the flow of water under the trail. The 10' culvert
extension will allow for a safer, more gradual slope away from the finished trail edge at this location.
I have reviewed excavation information from American Engineering Testing, and select granular borrow
receipm from Sunram Construction and have determined that 609 C.Y. of additional subeut was removed to
properly prepare the trail subgrade. In addition, I have reviewed the costs of additional subeut, placed
select granular borrow, moving the additional organic topsoil on the site, and the cost of the culvert
extension and feel that the prices are fair. I recomm~d that the City Council approve the change order
sum of $31,623.36.
Due to proper preparation of the subbase, the City can be assured that the Marsh Glen Trail will remain in
excellent condition with minimal additional maintenance for many years to come.
123 North Third Street, Suite 100, M'rrme-atxflis, MN 55401-1659
Ph (612) 338-0800 Fx (612) 338-6838 www.hk~.com
Direct (612) 252-7133 F..mafl msty@hk~_com
Change Order
OWNER
LANDSCAPE ARCHITECT
CONTRACTOR
City of Chanhassee
H~lngtoe Koegler Group Inc.
Sunram Cor~stmction Inc.
OTHER
THIS DOCUMENT HAS IMPORTANT LEGAL CONSEQUENCES; CONSULTATION WITH AN A'I'rORNEY IS ENCOURAGED WITH
RESPECT TO ITS COMPLETION OR MODIFICATION.
PROJECT:
Marsh Glen Trail and Pedestrian Bridge
chanhaasan Park and Recreation Department
Chanhassen, Minnasota
TO CONTRACTOR:
Sunram Cmstrucfio~ Inc.
20010 75~ Avenue North
Corceran, MN 56340
CHANGE ORDER NUMBER: 2
DATE: 2/21/2003
PROJECT NO: 00-81
CONTRACT DATE: 10/7/2002
VENOOR NO: I~A
The Contract is changed as follows:
(see attached sheets)
Not valid until algned by the Owner, Land~capa Architect and Contractor.
The original (Contract Sum) (Guaranteed Maximum Price) was
Net change by previously authorized Change Orders
The (Contract Sum) (Guaranteed Maximum Price) prior I~ this Change Order was
The (Contract Sum) (Guaranteed Maximum Price) will be (Increased) (decreased)
(unchanged) by the Change Order in the amount of
The new (Contract Sum) (Guaranteed Maximum Pdce) Including this Change Order will be
The contract'nme will be (Increased) (decreased) (un,haneda:Il by ( ) days
The date of Compl~on as of the date of this Change Order therefore is
Note: This summary does not reflect changes In the Contract Sum, Contract Time or
Guaranteed MaxJmum Pdce which have been authorized by Construction Change DiredJve.
$ 99,655.00
$ 3,927.00
$ 103,582.00
$ 31,623.36
$ 135,205.36
lO-Jun-03
LANDSCAPE ARCHITECT
Hoisington Ko~ler Group inc.
CONTRACTOR
Sunrarn Construction, Inc.
OWNER
Chanhassen Park and Recrealt~ Department
City of Chanhaasen
Address
123 North 3rd Street, Suite 100
Minneapolis, Minnesota 55401
20010 75th Avenue North
Corcoran, MN 55340
69o my
Chanhassen, MN 55317
Change Order - 2002 Edition - HKGi Copyright 2002 M.'~Chenh__~___WIG_TralADocumm'g~ Con'
Summary of Change Order No 2.
You are directed to make the following changes in the Contract Documents:
Description'
Additional Trail Subcut 609 CY @ $15 CY
Result in Contract Price: add
Additional Select Granular Fill,
Placed 609CY@ 28.54 CY
Result in Contract Price:
add
Dirt moved on site 1/8/03 & 1/9/03
Result in Contract Price:
add
Extend 12" CMP 10 LF to Swamp Side
Result in Contract Pdce: add
$9,135.00
$17,380.86
$4,757.50
$350.00
Net Contract change for Change Order No. 2. Add $31,623.36
Change Order - 2002 Edition - HKGi Copyright 2002
Pro' ect Area
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