Wholesale Transmission Main Extension & Booster Pump Station

RH2 partnered with Lakewood Water District to plan, design, and permit a major wholesale water transmission main extension and associated booster pump station to support growing regional water demands in Pierce County. The project extended the District’s existing system by more than 5 miles of 20-inch ductile iron pipeline, providing new supply connections for multiple wholesale customers and a future connection for additional capacity.

The alignment required coordination across multiple jurisdictions, utility owners, and private properties. RH2 supported route evaluation, easement coordination, geotechnical investigations, and phased design strategies that reduced construction risk and minimized schedule conflicts. To control costs and maintain the District’s aggressive delivery schedule, RH2 developed bid packages that allowed for early material procurement and construction ahead of planned roadway improvements by others. The project was delivered on an accelerated schedule to meet customer demand and was recognized with an Outstanding Partner Award upon completion.

Environmental & Permitting Support: RH2 conducted comprehensive environmental investigations along the 6.8-mile alignment, including wetland and stream delineations, critical areas assessments, and agency coordination. Our team delineated and rated 26 wetlands and identified 7 regulated streams, preparing a Critical Areas Report that guided impact avoidance, mitigation, and permitting. Close collaboration between environmental and design teams minimized impacts, streamlined approvals, and kept the project moving forward.