SITE INFORMATION AND CORRESPONDENCE 1995-2004

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Code of Reguiations (CCR), Title 23, Division 3, Chapter 15); upgradient and downgradient water quality; 23. State Water Board regulations governing site investigation and corrective action at.underground 4 Industry-wide operational practices that historical storage tank unauthorized release sites are found in y have led tfrom discharges, such as leakage of 23 CCR Division 3, Chapter 16, in particular pollutants wastewater .Article I i commencing with Section 2720; collection and conveyance systems, sumps, storage tanks, landfills, and clarifiers; 24. It is the responsibility of the Regional Water Board to make decisions regarding cleanup and abatement 5. Evidence of poor management of materials goals and objectives for the protection of water or wastes, such improper storage quality and the beneficial uses of waters of the practices or inabitlity to reconcile state within each Region; inventories; 25. Cleanup and abatement alternatives that entail 6. Lack of documentation of responsible discharge of residual wastes to waters of the state, management of materials k wastes, such as lack discharges to regulated waste management units, or nmanifests or lack of documenta leaving wastes in place, create additional regulatory tion of proper disposal; constraints and long-term liability, which must be 7• Physical evidence, such as analytical data, considered in any evaluation of cost-effectiveness; soil or pavement staining, distressed 26. The Porter-Cologne Water Quality Control Act vegetation. or unusual odor or appearance; allows Regional Water Boards to impose more 8. Reports and complaints; stringent requirements on discharges of waste than 9. Other agencies' records of possible or any statewide requirements promulgated by the known discharge; and State Water Board (e.g., in this PoLv) or than water quality objectives established in statewide or 10. Refusal or failure to respond to Regional regional water quality control plans as needed to Water Board inquiries; V protect water cualiry and to reflect regional and B. Make a reasonable etfort to identify the site-specific conditions. dischargers associated with the discharge. It is not necessary to identify all dischargers for the THEREFORE BE IT RESOLVED: Regional Water Board to proceed with requirements for a discharger to investigate and These policies and procedures apply to all clean up; investieations, and cleanuo and abatement activities, for C. Require one or more persons identified as a all types of discharges Subject to Section 13304 of the discharger associated with a discharge or Water Code. threatened discharge subiect to WC I. The Regional Water Board shall apply the Section 13304 to undertake an investigation. following procedures in determining whether a based on findings of I.A and LB above: person shall be required to investieate a discharge D. Notify appropriate federal, state• and local under WC Section 13267, or to clean up waste and agencies regarding discharges subiect to WC abate the effects of a discharge or a threat of a Section 13304 and coordinate with these discharge under WC Section 13304. The Regional agencies on investigation, and cleanup and Water Board shall: abatement activities. A. Use any relevant evidence, whether direct or -- circumstantial, including, but not limited to. II The Regional Water Board shall apply the evidence in the following categories: following policies in overseeing: (a) investigations 1. Documentation of historical or current to determine the nature and horizontal and vertical activities, waste characteristics, chemical extent of a discharge and (b) appropriate cleanup use, storage or disposal information, as and abatement measures. documented by public records, responses to questionnaires, or other sources of A. The Regional Water Board shall: information; I. Require the discharger to conduct 2. Site characteristics and location in relation investigation, and cleanup and abatement. to other potential sources of a discharge; in a progressive sequence ordinarily 3. Hydrologic and hydroeeoloeic consisting of the following phases. information, such as differences in provided that the sequence shall adjusted to accommodate site-specific circumstances, if necessary: