Lockwood, Andrews & Newnam
Navarro County, Texas
Tarrant Regional Water District (TRWD) and Dallas Water Utilities (DWU) partnered to develop the Integrated Pipeline (IPL) Project to bring raw water from their East Texas sources (Richland-Chambers Reservoir, Cedar Creek Reservoir, and Lake Palestine) to the Metroplex. The overall project consists of 150 miles of pipeline, three new lake pump stations, and three new booster pump stations with the capacity to deliver up to 350 million gallons per day (mgd). The IPL Project will be constructed in phases, with a combined estimated construction cost of more than $2 billion.
Plummer served on the design team for IPL Section 15-1, which encompassed more than 15miles of 108-inch diameter pipeline. Plummer provided the following services:
The Richland-Chambers intertie connects the existing 90-inch TRWD transmission pipeline with the new 108-inch IPL and will be required to continuously dissipate approximately 40 psi of operating pressure through the entire range of flow from 0 to 150 mgd. This design required multiple orifice plates in series with control valves to dissipate the pressure head without cavitation while maintaining stable control at the Richland-Chambers raw water intake pump station.
Plummer provided assessment, design, and coordination services for this five-mile gravity wastewater interceptor.
Oklahoma City receives a significant portion of its water from southeastern Oklahoma via a 100-mile-long, 60-inch diameter, pre-stressed concrete cylinder pipeline (PCCP) that was originally installed in the early 1960s.
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