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Preston Street sewer work stalls after water-main breaks; council approves $93,825 emergency change order
Summary
Stanwood council approved emergency change orders in December after contractors repeatedly broke an existing water line while installing the Preston Street sewer. Council approved a $93,825 change order and later authorized additional repairs and an HR Green amendment for $4,300.
Stanwood City Council approved emergency construction change orders in December after contractors installing the Preston Street sewer repeatedly broke an existing water line, leading to costly repairs and a revised construction plan.
At a Dec. 8 special meeting, Matt Wildman of engineering firm HR Green told the council contractors had encountered multiple breaks in an old water line while trenching for the sewer replacement and estimated immediate repair costs at about $25,000 plus a separate $33,000 cost to replace a segment of the water main. Wildman told the council a full-sand backfill option recommended for proper compaction could raise total additional costs to roughly $593,000 if required.
The council voted to approve a $93,825 change order to replace the water main from the manhole at Preston Street and 3rd Avenue alley to the manhole near Ash Street and to delay paving of Preston Street until 2022 to allow settling after repair work. The motion passed by roll call (all ayes).
At the Dec. 14 regular meeting the council approved Change Order No. 2 to cover emergency repairs to the water main and the backfill material needed after the breaks, and discussed Change Order No. 3, which would add valves and replace fire hydrants. A special meeting was scheduled to finalize the wording and approval of Change Order No. 3.
On Dec. 17 the council approved Change Order No. 3 (HR Green reported the change order did not increase contract days or original contract cost) and approved an amended services agreement with HR Green for $4,300 to cover the additional water-main replacement services.
Council members recorded their motions and votes in the minutes; the minutes show each change-order vote was approved by roll call with all members voting aye. The city will review final costs and return to the council as further construction invoices and pay applications are submitted.
Next steps: HR Green will submit finalized change orders and revised pay applications for council review at the scheduled follow-up meeting; the council deferred paving work to allow time for compaction and settlement following the replacement and sand/backfill work.
