Cal. WAT § 14956

(a) Once the nature, sources, scope, and degree of the pollution affecting a commercial shellfish growing area have been determined, the regional board, with the advice of the local technical advisory committee, shall order appropriate remedial action, including the adoption of best management practices, to abate the pollution affecting that area. The regional board shall monitor water quality in the threatened area during the implementation of pollution abatement measures to ensure that the measures are effective and shall provide the results of the monitoring to the technical advisory committee. The regional board shall give public notice of any actions proposed for adoption.

(b) If agricultural sources of pollution have been identified as contributing to the degradation of shellfish growing areas, the regional board shall invite members of the local agricultural community representing the type of agricultural discharge affecting the local shellfish growing area, the local resource conservation district, the local soil conservation service, the local agricultural stabilization and conservation service, the cooperative extension of the University of California, and affected shellfish growers to develop and implement appropriate short- and long-term remediation strategies that will lead to a reduction in the pollution affecting the commercial shellfish growing area.