Firestone Water Treatment Plant

CLIENT NAME

Town of Firestone

LOCATION

Firestone, Colorado
United States

PRACTICE AREA

Water Treatment

SERVICES INCLUDED

Planning

Design

Construction Management

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Plummer collaborated with the Town of Firestone, Colorado Civil Group, and LRE Water to evaluate water supply options and treatability. Plummer provided a feasibility evaluation of treatment options, bench scale testing, and conceptual through final design for the St. Vrain Water Treatment Plant. LRE Water provided water rights planning and water quality sampling. A Technical, Managerial, and Financial (TMF) Capacity assessment was also prepared early on and submitted as part of a Drinking Water Revolving Fund application.  

The water treatment plant will include chlorine dioxide, coagulation, 3-stage flocculation, sedimentation using plate settlers, pressurized ultrafiltration membranes (UF), reverse osmosis (RO), corrosion control using calcite contractors and orthophosphate, and disinfection using gas chlorination. The Phase 1 design capacity is 1.5 MGD with planning and design provisions for a future Phase 2 expansion to 5 MGD. The project also includes a 0.5 MG welded steel raw water storage tank, a below-grade chlorine contact clearwell, a backwash recovery system with geotubes, a lined pond and recycle pumps, an approximately 20,000-square-foot metal building, and a 1.0 MG welded steel finished water storage tank. LRE Water and Plummer collaborated to evaluate RO brine disposal options; deep well injection disposal is planned.  

During the design phase, the UF membrane system was pre-procured, and the CMAR was brought on board after the 30% design phase. Plummer prepared the bid packages and contract documents for both the pre-procurement and CMAR processes. The 60% Plan Set and Basis of Design Report were submitted to CDPHE, and approval was received in approximately 4 months. The 80% Plan Set was utilized by the CMAR to prepare the Guaranteed Maximum Price (GMP). Construction began in 2020, and Plummer will provide construction administration and oversight services to the Town of Firestone.

The water treatment plant is projected to be online by the end of 2021 with an overall construction budget of $18 Million.

"You all have done a wonderful job for the Town on this project." -Public Works Director


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