California Code of Regulations
Title 23 - Waters
Division 4 - Regional Water Quality Control Boards
Chapter 1 - Water Quality Control Plans, Policies, and Guidelines
Article 9 - San Diego Region
Section 3989.7 - Total Maximum Daily Load for Dissolved Copper, Lead and Zinc in Chollas Creek, Tributary to San Diego Bay
Through Regional Water Board Resolution R9-2007-0043, adopted June 13, 2007, the San Diego Regional Water Quality Control Board amended the Water Quality Control Plan for the San Diego Region (Basin Plan). On July 15, 2008, the State Water Resources Control Board (State Water Board approved this amendment under State Water Board Resolution No. 2008-0054. This Basin Plan amendment establishes a Total Maximum Daily Load (TMDL) and associated load and wasteload allocations for copper, lead and zinc in Chollas Creek, and revises the Toxic Pollutants section of Chapter 3 to reference in the California Toxics Rule [40 CFR 131.38]. This amendment includes a program to implement the TMDL and monitor its effectiveness. Full implementation of the TMDLs for dissolved copper, lead and zinc shall be completed within 20 years from the effective date of the Basin Plan amendment. The compliance schedule for implementing the wasteload reductions required under these TMDLs is structured in a phased manner, with 80 percent of reductions required in 10 years, and 100 percent of reductions required within 20 years. The 20-year compliance schedule is contingent upon the discharges implementing integrated controls to achieve required copper, lead, zinc, indicator bacteria, diazinon, and trash reductions. Water quality monitoring will be necessary to assess progress in achieving wasteload allocations and compliance in Chollas Creek with the water quality criteria for dissolved copper, lead, and zinc.
1. New section summarizing amendments to Basin Plan filed 10-22-2008; amendments adopted by the San Diego Regional Water Quality Control Board 6-13-2007 per Resolution No. R9-2007-0043. Approved by the State Water Resources Control Board 7-15-2008 per Resolution No. 2008-0054; approved by OAL 10-22-2008 pursuant to Government Code section 11353 (Register 2008, No. 43).
