SUBJECT
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Approve Amendment No. 1 to Agreement 2023-074, with Wharton-Smith, Inc., to provide additional Construction Manager at Risk (CMAR) preconstruction services for the Northeast Regional Wastewater Treatment Facility expansion from 6 to 9 million gallons daily. ($926,576.00 preconstruction services one-time expense)
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DESCRIPTION
On December 5, 2023, the County entered into Agreement 2023-074, with Wharton-Smith, Inc., to provide pre-construction CMAR services for the Northeast Regional Wastewater Treatment Facility (NERWWTF) expansion from 6 to 9 Million Gallons Daily (MGD) project. This project was initially broken down into two parts, Part 1 for Biosolids Improvements, and Part 2 for Capacity Expansion, due to the size and complexity of the facility expansion.
Part 1, Biosolids Improvements preconstruction services, included value engineering suggestions, constructability reviews, management of pre-bid conferences with sub-contractors, bid solicitation services, along with management of pre-award meetings with sub-contractors for Part 1 in the amount of $116,003.00.
Part 2, Capacity Expansion services, included conceptual pre-construction services through 30% design including project coordination, cost estimation, constructability review and value engineering, and initial scheduling in the amount of $204,510.00.
Upon completion of the above preconstruction services, it was determined the most cost-efficient approach would be to combine Parts 1 and 2 and break down the entire expansion project into four phases to include but not limited to:
* Phase A - Deep Bed Filters, Chlorine Contact Chambers, Dewatering, Chemical Feed Building
* Phase B - Headworks, Return Pump Station, Electrical Building No. 3
* Phase C - Biological Nutrient Removal, Equalization Tank, Splitter Box Blower/MCC Building
* Phase D - Ground Storage Reservoir, High Service Pump Station, Augmentation Wells
The four phases will take an estimated three years to design. It is es...
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