Waste Discharge
WDR Feasibility StudiesUpdated
Map of Watersheds and Soft Bottom Reaches
Annual Maintenance and Monitoring Report
Maintenance Clearing Activities Schedule
WDR Working Group Meetings and AttachmentsNew
Annual Maintenance and Monitoring Report
Soft-Bottom Channel Clearing

On February 4, 2010, the California Regional Water Quality Control Board issued a new Waste Discharge Requirement (WDR) Order Number R4-2010-0021 to regulate the District’s Soft-Bottom Channel (SBC) maintenance clearing activities. This WDR supersedes the 1999 401 Certification, as last amended in August 2008. The first Annual Project and Mitigation Monitoring Report to be submitted under the new WDR will cover the 2010-11 SBC maintenance clearing activities and was available on May 1, 2011.

In compliance with the new WDR permit, the following are the links to FTP folders that contain the Biological Reports, Annual Reporting Documentation and other files related to the maintenance of these SBC reaches by year:

WDR Annual reporting outline

Annual Biological and Monitoring Reports

Additional Resources
Hazard Analysis and Critical Control Plan(HACCP)
Los Angeles County Flood Control District(LACFCD)
Los Angeles Regional Water Quality Control Board (LARWQCB)

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