California Code of Regulations › Title 23 - Waters › Division 3 - State Water Resources Control Board and Regional Water Quality Control Boards › Chapter 15 - Discharges of Hazardous Waste to Land › Article 5 - Water Quality Monitoring and Response Programs for Waste Management Units › Section 2550.10 - Corrective Action Program

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) A
				  discharger required pursuant to section
				  2550.1 of this article to
				  establish a corrective action program for a waste management unit shall, at a
				  minimum, comply with the requirements of this section for that unit.
(b) The discharger shall take corrective
				  action to remediate releases from the waste management unit and to ensure that
				  the waste management unit achieves compliance with the water quality protection
				  standard under section
				  2550.2 of this article. The
				  regional board shall specify the water quality protection standard for
				  corrective action in the waste discharge requirements.
(c) The discharger shall implement corrective
				  action measures that ensure that constituents of concern achieve their
				  respective concentration limits at all monitoring points and throughout the
				  zone affected by the release, including any portions thereof that extend beyond
				  the facility boundary, by removing the waste constituents or treating them in
				  place. The discharger shall take other action approved by the regional board to
				  prevent noncompliance with those limits due to a continued or subsequent
				  release from the waste management unit, including but not limited to, source
				  control. The waste discharge requirements shall specify the specific measures
				  that will be taken.
(d) In
				  conjunction with the corrective action measures, the discharger shall establish
				  and implement a water quality monitoring program to demonstrate the
				  effectiveness of the corrective action program. Such a monitoring program may
				  be based on the requirements for an evaluation monitoring program under section
				  2550.9 of this article, and shall
				  be effective in determining compliance with the water quality protection
				  standard under section
				  2550.2 of this article and in
				  determining the success of the corrective action measures pursuant to
				  subsection (c) of this section.
(e)
				  Corrective action measures taken pursuant to this section shall be initiated
				  and completed by the discharger within a period of time specified by the
				  regional board in the waste discharge requirements.
(f) Corrective action measures taken pursuant
				  to subsection (c) of this section may be terminated when the discharger
				  demonstrates to the satisfaction of the regional board that the concentrations
				  of all constituents of concern are reduced to levels below their respective
				  concentration limits.
(g) After
				  suspending the corrective action measures, pursuant to subsection (f) of this
				  section, the waste management unit shall remain in the Corrective Action
				  Program until an approved Detection Monitoring Program meeting the requirements
				  of section
				  2550.8 of this article has been
				  incorporated into waste discharge requirements and until the discharger
				  demonstrates to the satisfaction of the regional board that the waste
				  management unit is in compliance with the water quality protection standard.
				  This demonstration shall be based on the following criteria and requirements:
(1) The concentration of each constituent of
				  concern in each sample from each monitoring point in the Corrective Action
				  Program for the waste management unit must have remained at or below its
				  respective concentration limit during a proof period of at least one year,
				  beginning immediately after the suspension of corrective action measures;
				  and
(2) The individual sampling
				  events for each monitoring point must have been evenly distributed throughout
				  the proof period and have consisted of no less than eight sampling events per
				  year per monitoring point.