Lockwood, Andrews & Newnam
Navarro County, Texas
United States
Design
Construction Management
Environmental
TarrantRegional Water District (TRWD) and Dallas Water Utilities (DWU) partnered todevelop the Integrated Pipeline (IPL) Project to bring raw water from theirEast Texas sources (Richland-Chambers Reservoir, Cedar Creek Reservoir, andLake Palestine) to the Metroplex. The overall project consists of 150 miles ofpipeline, three new lake pump stations, and three new booster pump stationswith the capacity to deliver up to 350 million gallons per day (mgd). The IPLProject will be constructed in phases, with a combined estimated constructioncost of more than $2 billion.
Plummerserved on the design team for IPL Section 15-1, which encompassed more than 15miles of 108-inch diameter pipeline. Plummer provided the following services:
TheRichland-Chambers intertie connects the existing 90-inch TRWD transmissionpipeline with the new 108-inch IPL and will be required to continuouslydissipate approximately 40 psi of operating pressure through the entire rangeof flow from 0 to 150 mgd. This design required multiple orifice plates inseries with control valves to dissipate the pressure head without cavitationwhile maintaining stable control at the Richland-Chambers raw water intake pumpstation.
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.
As the largest project in Texas using reclaimed water to augment a surface water supply source, the East Fork Water Reuse Project provides the NTMWD with over 102,000 acre-feet of water per year.
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