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TO: Mayor John Laesch
FROM: Ian Wade, Capital Projects Manager
DATE: November 9, 2026
SUBJECT:
A Resolution authorizing the Director of Purchasing to execute a change order to the contract with Semper Fi Landscaping, Inc. in an amount not to exceed $648,000.00 for the Mastodon Lake Dredging project.
PURPOSE:
To cover the cost of a change to the quantity of dried, dredged material to be hauled from the dewatering area at Mastodon Lake.
BACKGROUND:
To properly address the accumulation of sediment and vegetation in Mastodon Lake, the City recently requested bids to perform hydraulic dredging of the lake. Bids were opened on April 1, 2026 and Semper Fi was found to be the lowest responsible bidder in the amount of $4,600,000, which included a base bid of $4,400,000 and $200,000 in contingency funds. (R26-138)
Among the line-item prices received in the bid was a cost per cubic yard to haul the dredged and dried material from its dewatering location near the lake to its final location of disposal or reuse. At the time of the publication of the Invitation to Bid, which had been delayed, canceled, and rebid to accommodate numerous changes to the scope resulting from feedback received from dredging contractors, the City and their consultant, HR Green, were hopeful that much of the estimated 30,000 cubic yards of dried material could ultimately remain at the dewatering location, which would eliminate the need to haul the entire amount. As a result, while the Invitiation to Bid did request pricing to regrade (spread out and compact) 30,000 cubic yards, it only requested pricing to haul 10,000 cubic yards.
Unfortunately, since the time of contract award, it was determined that the dewatering location which was selected could not accept any material due to restrictions related to adjacent lowland drainage and utilization of the property by East Aurora High School. As a result, we are requesting authorization to add an additional 20,000 cubic yards to the scope...
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