SUBJECT/RECOMMENDATION:
Title
Ratify and confirm purchase order to Rowland, Inc. of Pinellas Park, Florida in the amount of $1,909,650.00 for the Marshall Street and Northeast Water Reclamation Facility Digester Covers Evaluation and Repairs Project (21-0022-UT) and authorize the appropriate officials to execute same. (consent)
Body
SUMMARY:
The City utilizes anaerobic digesters at its Northeast (NE) and Marshall Street (MS) Water Reclamation Facilities (WRF’s) that convert organic matter into stabilized biosolids and methane (or biogas). The digesters at MS and NE WRF were releasing small amounts of methane into the atmosphere through suspected leaks in its floating cover. The methane produced by the digester is flammable and when mixed with air, can create explosive conditions.
November 18, 2021, City Manager approved emergency procurement for engineering and construction services to remediate the issues due to the potential threat to the plants and public safety.
January 20, 2022, City Council approved (via ratify and confirm) a purchase order to Hazen and Sawyer to design the repairs. The agenda item noted plans to hire Rowland to construct the repairs with an estimated cost of $725,000.00, and Engineering would return to Council later for approval once the construction estimate was complete.
On January 31, 2022, the City Manager approved the initial $1,500,000 PO to Rowland to make the necessary repairs and remediate the emergencies to the MS and NE digesters, on an as-needed basis.
Work to date includes installing a bypass system to isolate the digester tank, removal of its contents, and cleaning the interior of the tank. Ongoing and future work includes repairing seams in the digester cover to eliminate leaks and, subsequently, seeding and placing the digester back into service. The NE digester has been stabilized by installing a flame arrestor and will be repaired separately in a future project.
To complete the work, based on current and best available information, it is estimated an additional $409,650.00 is required for a total expected final estimate of $1,909,650.00. Due to Rowland currently making the necessary repairs, it would be impractical and not cost effective to bid this additional amount of $409,650.00 to any other vendor.
The work is anticipated to last up to 3 additional months.
APPROPRIATION CODE AND AMOUNT:
3277327-546900-96664 $409,650
Funds are available in capital improvement project 327-96664, Water Pollution Control R&R, to fund this contract.