Section 20385 - SWRCB - Required Programs. (C15: s2550.1) (California Code of Regulations)

§ 20385. SWRCB - Required Programs. (C15: s2550.1)

(a) Monitoring Programs & their Respective Triggers -A discharger subject to this article shall conduct a monitoring and response program, approved by the RWQCB, for each Unit at the facility as follows.

(1) Detection Monitoring (default) -The discharger shall institute a detection monitoring program (under s20420) except as required below under ¶(a)(2-4);

(2) Evaluation Monitoring (trigger #1) -The discharger shall institute an evaluation monitoring program (under s20425) whenever there is "measurably significant" (see s20164) evidence of a release from the Unit during a detection monitoring program [under s20420(g or i)];

(3) Evaluation Monitoring (trigger #2) -The discharger shall institute an evaluation monitoring program (under s20425) whenever there is significant physical evidence of a release from the Unit. Significant physical evidence of a release includes unexplained volumetric changes in surface impoundments, unexplained stress in biological communities, unexplained changes in soil characteristics, visible signs of leachate migration, and unexplained water table mounding beneath or adjacent to the Unit and any other change to the environment that could reasonably be expected to be the result of a release from the Unit; and

(4) Corrective Action -The discharger shall institute a corrective action program under s20430 of this article when the RWQCB determines (pursuant to s20425) that the assessment of the nature and extent of the release and the design of a Corrective Action Program have been satisfactorily completed and the RWQCB approves the application for an amended report of waste discharge for corrective action submitted by the discharger during an evaluation monitoring program [pursuant to s20425(d)].

(b) Preparation for Other Programs -The RWQCB shall specify in the WDRs the specific type or types of monitoring programs required and the specific elements of each monitoring and response program. For each Unit, the RWQCB shall require one or more of the programs identified in ¶(a) that is appropriate for the prevailing state of containment at the Unit, and shall specify the circumstances under which each of the programs will be required. In deciding whether to require the discharger to be prepared to institute a particular program, the RWQCB shall consider the potential adverse effects on human health or the environment that might occur before final administrative action on an amended report of waste discharge to incorporate such a program could be taken.

(c) Concurrent Detection Monitoring Program, Where Necessary -In conjunction with an evaluation monitoring program or a corrective action program, the discharger shall continue to conduct a detection monitoring program as necessary to provide the best assurance of the detection of subsequent releases from the Unit.

(1. New section filed 6-18-97; operative 7-18-97 (Register 97, No. 25).)

Note: Authority cited: Section 1058, Water Code. Reference: Sections 13172, 13263, 13267 and 13304, Water Code; and Section 43103, Public Resources Code.

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