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Council approves $290,580 change order for North/South Lake dredging; staff urged to verify volumes
Summary
Council approved a $290,580 increase to a contractor agreement for dredging and dewatering costs on North and South lakes, citing disposal-site changes and higher haul costs. Council asked staff to double-check dredged volumes and water-quality outcomes before equipment is demobilized.
City Council approved a first amendment to the contractor services agreement for the North and South Lake dredging project on Sept. 3, increasing the contract by $290,580 to cover higher hauling and disposal costs after the originally selected disposal site withdrew consent.
What council approved
The amendment increases the contract to $2,987,129.62 to reimburse the contractor for additional disposal and hauling charges that emerged after the contractor’s original disposal site declined to accept dredged material. The contractor found a replacement disposal site but the replacement raises the per-load charge and round-trip hauling distance; staff presented the change order as necessary to pay the contractor for the higher costs incurred.
Why it matters
The North–South lake project is part of the city’s water-quality work and the larger outfall/stormwater program. South Lake dredging was substantially complete at the time of the change order, and North Lake was in final survey stages. Staff said South Lake removal closely matched plan volumes; North Lake required an additional survey and final confirmation before demobilizing equipment.
Council direction and follow-up
Council members voiced concerns that initial quantity assumptions and disposal planning were inaccurate and asked staff to re-check survey volumes and to confirm the dredging achieved the targeted water-quality and stormwater-storage objectives. City staff agreed to verify whether additional dredging remains necessary before the contractor demobilizes equipment or acceptance is finalized.
Financial note
Staff noted the project is largely funded through a legislative grant (about $3 million was cited in public remarks) and that the amendment is within the project’s funding stack.
Ending
Council passed the change order unanimously and asked staff to confirm final volumes and post-dredge water-quality results with the contractor and permitting agencies before final acceptance and demobilization.
