Open Channel Monitoring in the Los Angeles River, Ballona Creek, and Dominguez Channel Watersheds
The Illicit Connections and Illicit Discharges Elimination Program in the National Pollutant Discharge Elimination System (NPDES) permit states that Permittees shall eliminate all illicit connections and illicit discharges to the storm drain system, and shall document, track, and report all such cases.
The language is as follows…
Tracking: All Permittees shall, no later than February 3, 2003, develop and maintain a listing of all permitted connections to their storm drain system. All Permittees shall map at a scale and in a format specified by the Principal Permittee all illicit connections and discharges on their baseline maps, and shall transmit this information to the Principal Permittee. No later than February 3, 2003, the Principal Permittee shall use this information as well as results of baseline and priority screening for illicit connections.
"Screening" means using proactive methods to identify illicit connections through a continuously narrowing process. The methods may include: performing baseline monitoring of open channels…
In response to this NPDES permit language, the status and trends water quality monitoring program was initiated on the Los Angeles River on January 24, 2001 at eight locations (see Table). Bacterial samples are collected weekly and samples for metals analysis are collected monthly. Status and trends sampling was initiated along Ballona Creek and the Dominguez Channel on April 3, 2001.
Bacterial samples are collected at four locations along both the Ballona Creek and the Dominguez Channel (see Table). Samples for bacterial analysis are collected weekly and samples for metals analysis are collected monthly.
Tributary monitoring commenced in January 2002. During 2002 the tributary channels of the Los Angeles River (9 stations), Ballona Creek (4 stations), and Dominguez Channel (2 stations) were monitored. The program is designed to track the status and trends of water quality and pollutants in the Los Angeles River, Ballona Creek, and Dominguez Channel watersheds to support effective water quality management for these watersheds.