Completed NFC Projects - Greenville-Banning Channel
Greenville-Banning Channel
OCFCD Facility No. D03
2500 feet downstream of Adams Avenue
Located in Costa Mesa
Supervisorial District 2
Project Information
Greenville - Banning Channel Urban Runoff Diversion Project
The Greenville-Banning Channel Urban Runoff Diversion Project was one of four channel
sites chosen for the Urban Runoff Diversion Project within the Talbert Valley and
Lower Santa Ana River watersheds; the other three Urban Runoff Diversion Projects
were: the Huntington Beach Pump Station, Talbert Channel, and Santa Ana River Channel.
The purpose of the Urban Runoff Diversion Projects is to prevent untreated urban
runoff from reaching the ocean waters. Urban runoff has been suspected as one of
several possible sources that may contribute to high coliform bacteria counts along
Huntington State Beach. The projects include the installation of pumps to divert
over 95% of the non-storm runoff from the Talbert and Lower Santa Ana River watershed
to the nearby OCSD wastewater treatment plant. The proposed projects divert seasonal
urban runoff (containing animal waste, fertilizers, waste oils, and other chemicals
that are nutrients for bacteria) into the sanitary sewer system at four different
locations to reduce water pollution.
The construction of the Greenville-Banning Channel diversion included the installation
of low flow pumps and an inflatable rubber dam which diverts non-storm water to
OCSD for treatment before it reaches the ocean. The rubber dam is located on the
Greenville-Banning Channel east of the existing bicycle trail bridge across the
Santa Ana River and 2500 feet downstream of Adams Avenue. The pumped discharge flows
westerly through a discharge pipe attached to the bicycle bridge, then southerly
along the Santa Ana River maintenance road, then westerly on Atlanta Avenue to an
existing OCSD sewerline at Brookhurst Street.
Cost: $897,000
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