Cal. Code Regs. tit. 23 § 3929.13
The Regional Water Quality Control Board, Central Coast Region (Central Coast Water Board) adopted Resolution No. R3-2014-0009 on January 30, 2014, amending the Water Quality Control Plan for the Central Coast Region (Basin Plan). The State Water Resources Control Board approved the amendment under Resolution No. 2014-0033 on July 2, 2014.
Resolution No. R3-2014-0009 establishes toxicity and pesticide Total Maximum Daily Loads (TMDLs) and an implementation plan for the Santa Maria River watershed. The TMDLs address impairments in the Santa Maria River Watershed (including Blosser Channel, Bradley Canyon Creek, Bradley Channel, Greene Valley Creek, Little Oso Flaco Creek, Main Street Canal, Orcutt Creek, Oso Flaco Creek, Oso Flaco Lake, and the Santa Maria River) due to unknown toxicity, sediment toxicity, and elevated levels of pesticides. The impairments are based on surface waters not meeting the Basin Plan narrative water quality objectives for toxicity and pesticides. The TMDL establishes numeric toxicity and pesticide targets.
Responsibility for achieving waste load allocations and load allocations falls upon several entities as described in Table 11 of the Basin Plan Amendment. An implicit margin of safety is utilized in the TMDL to account for uncertainties. The Water Board is relying on existing regulatory measures (i.e., the Agricultural Order and storm water permits) to ensure implementation actions are carried out by implementing parties, as well as utilizing a Management Agency Agreement and pesticide management plan between the California Department of Pesticide Regulation, the State Water Resources Control Board, and the Central Coast Water Board to address impairments.
Milestones are established for achieving the TMDLs and the Central Coast Water Board will track progress towards achieving the TMDLs through review of implementation actions and monitoring conducted by the implementing parties. Water Board staff will conduct triennial reviews of implementation actions and monitoring results. If existing efforts are not expected to achieve the TMDLs as scheduled (as determined by triennial reviews), the Executive Officer or the Water Board may require changes to existing monitoring, reporting, or implementation efforts pursuant to California Water Code Sections 13263, 13267 or 13383.
Cal. Code Regs. Tit. 23, § 3929.13