HomeMy WebLinkAboutA001 - Council Action Form dated April 8, 2025ITEM #:32
DATE:04-08-25
DEPT:PW
SUBJECT:2023/24 AMES PLAN 2040 SANITARY SEWER UTILITY INFRASTRUCTURE
(265TH STREET EXTENSION) - CHANGE ORDER NO. 1
COUNCIL ACTION FORM
BACKGROUND:
This new program involves installation of public sanitary sewer infrastructure into the priority growth
tiers shown in Ames Plan 2040. Installing the sanitary sewer system proactively opens the ability to
develop land in the adopted growth tiers. This project includes extending a new sanitary sewer along
Ken Maril Road, and along 550th Avenue from Ken Maril Road to 265th Street.
On December 10, 2024, City Council awarded the contract to S.M. Hentges and Sons, Inc. of Jordan,
Minnesota in the amount of $2,036,000. The specifications that were developed by City staff and
included in the contract initially estimated 200 cubic yards (CY) of removal of frozen soil.
Frozen soil is unique in construction in that it must be hauled off-site and replaced by regular, non-
frozen fill, resulting in increased costs. The 200 CY figure was included in the specifications to
establish a unit price for this material. The actual amount depends on conditions encountered in the field
and the timing of the project.
At the time the contract was awarded, staff encouraged the contractor to commence work rapidly
in order to minimize disruption to adjacent properties and a gravel county road. However, this
schedule resulted in 9,533 CY of frozen materials being encountered due to the winter weather
and a greater than expected depth of frost. This overage (9,333 CY) necessitates a Change Order
in the amount of $167,994.
It should be noted that although this change order is an increase in cost, this construction
approach was pursued in consultation with property owners and avoids impacts to their
properties, which would likely have resulted in crop damage expenses and costs to install and
remove temporary field access.
Revenue and expenses associated with this program are estimated as follows:
Funding Source Available
Revenue
Estimated
Expenses
ARPA $2,300,000
Sewer Utility Fund $200,000
Construction $2,036,000
Change Order No.1 $ 167,994
Engineering/Administration $ 290,000
Total $2,500,000 $2,493,994
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ALTERNATIVES:
1. Approve Change Order No. 1 in the amount of $167,994 for the 2023/24 Ames Plan 2040
Sanitary Sewer Utility Infrastructure Project (265th Street Extension).
2. Direct staff to pursue changes to the project.
CITY MANAGER'S RECOMMENDED ACTION:
The change order proposed is a result of the timing and coordination of the sanitary sewer
installation project with adjacent property owners. Staff has reviewed the change order and
believes it is appropriate. Therefore, it is the recommendation of the City Manager that the City
Council adopt Alternative No. 1, as described above.
ATTACHMENT(S):
Ames 2040 Plan Overview.pdf
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