California Code of Regulations › Title 23 - Waters › Division 4 - Regional Water Quality Control Boards › Chapter 1 - Water Quality Control Plans, Policies, and Guidelines › Article 4 - Los Angeles Region › Section 3939 - Resolution NO. 2002-022, Amendments to the Water Quality Control Plan for the los Angeles Region to Incorporate Implementation Provisions for the Region's Bacteria Objectives and to Incorporate a Wet-Weather Total Maximum Daily Load for Bacteria at Santa Monica Bay Beaches

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
This basin plan amendment establishes implementation
					 provisions for the bacteria objectives set to protect the water contact
					 recreation (REC1) beneficial use. Specifically, this amendment incorporates a
					 "reference system/antidegradation approach" and a "natural exclusion approach"
					 as implementation procedures for the single sample bacteria objectives in the
					 Basin Plan. It also amends the dry weather TMDL to change the reevaluation date
					 in the TMDL from two years after its effective date to four years after the
					 effective date of the wet weather TMDL to achieve consistency in scheduling
					 between the dry-weather and wet-weather TMDLs.
This basin plan amendment establishes a Total Maximum Daily
					 Load (TMDL) for bacteria for Santa Monica Bay Beaches during wet weather,
					 defined as days with one-tenth of an inch of rain or greater and the three days
					 following the rain event as well. The TMDL:
(1) establishes the loading capacity of the
				  bay beaches as the maximum densities of the four bacterial indicators (total
				  coliform, fecal coliform, enterococcus, and total coliform when fecal-to-total
				  ratio exceeds 0.1) specified in the basin plan as bacteriological water quality
				  objectives for marine water having a water contact beneficial use
				  designation;
(2) specifies the
				  maximum number of daily and weekly wet-weather sampling days per year which
				  each of the 67 shoreline monitoring stations may exceed any singe sample
				  maximum bacterial density water quality objective;
(3) provides that all responsible
				  jurisdictions and agencies within a subwatershed are jointly responsible for
				  complying with the allowable number of exceedance days for each associated
				  shoreline monitoring site;
(4)
				  establishes zero exceedance days during wet weather for the two Publicly Owned
				  Treatment Works discharging into Santa Monica Bay and its watershed;
(5) establishes zero exceedance days during
				  wet weather for nonpoint sources;
(6) specifies that the allowable exceedance
				  days, and the rolling 30-day geometric bacteria density means (specified in the
				  basin plan as bacteriological water quality objectives) must be achieved no
				  later than ten or eighteen years after the effective date of the TMDL,
				  depending on the implementation approach undertaken;
(7) requires responsible jurisdictions and
				  agencies to conduct daily or systematic weekly sampling at all major drains and
				  creeks and at existing monitoring stations at beaches without storm drains or
				  creeks; and,
(8) specifies that the
				  samples are to be collected from the wave wash (the compliance point).
The amendment identifies the principal regulatory
					 mechanisms to be used to implement the TMDL as the Los Angeles County Municipal
					 Storm Water NPDES permit, the Caltrans Statewide Storm Water Permit, any future
					 Phase 2 Municipal Storm Water NPDES permits within the Santa Monica Bay
					 watershed management area, the General Industrial Stormwater Permit, the
					 General Construction Stormwater Permit, the two NPDES permits for the POTWs,
					 the authority vested in the Executive officer by Water Code sections
					 13263 and
					 13267, and
					 regulations to be adopted pursuant to Water Code section
					 13291. The
					 amendment sets compliance milestones at years 6, 10, 15 and 18.
Resolution No R12-007, Amendment to the Water Quality
					 Control Plan for the Los Angeles Region to Revise the Total Maximum Daily Loads
					 for Bacteria in the Santa Monica Bay Beaches; the Marina del Rey Harbor
					 Mothers' Beach and Back Basins; and the Los Angeles Harbor Inner Cabrillo Beach
					 and Main Ship Channel and to Revise Implementation Provisions for Water Contact
					 Recreation Bacteria Objectives
The basin plan amendment revises Resolution No. 2002-004
					 and 2002-022 by refining allowable exceedances through re-evaluation of the
					 reference system. The amendment further refines the geometric mean
					 implementation provisions and provides that the regional board shall reconsider
					 the TMDL by July 15, 2018.
1. New
					 section summarizing amendments to the Water Quality Control Plan filed
					 5-20-2003; amendments adopted by the Los Angeles Regional Water Quality Control
					 Board 12-12-2002 per Resolution No. 2002-022; approved by OAL and effective
					 5-20-2003 pursuant to Government Code section
					 11353
					 (Register 2003, No. 21).
2. Amendments to basin plan filed
					 11-7-2013; amendments approved by State Water Resources Control Board 3-19-2013
					 pursuant to Resolution No. 2013-0008; amendments approved by OAL pursuant to
					 Government Code section
					 11353
					 11-7-2013 (Register 2013, No. 45).