ARCHIVED REPORTS_XR0008213 - Laserfiche WebLink

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Chanter 1 PURPOSE report is intended to provide information and suggested procedures to be used in essing the complex issues of waste classification and cleanup level determination from a purely water quality based point of view Currently available procedures of State and Federal regulatory agencies are insufficient to protect all present and probable future - beneficial uses of waters of California from waste disposal and contaminated site cleanup/ nvtigation activities, as required by the Porter-Cologne Water Quality Control Act and policies and regulations of the State Water Resources Control Board. The procedures - presented herein are not intended to supersede the authority or procedures of other regulatory agencies in these areas,but should complement them in a manner consistent with beneficial use protection. The Department of Health Services, the Department of Fish &Game,and the Air Resources Board should also be consulted with respect to human health,fish and wildlife, and air quality impacts of waste disposal and site cleanup activities. Appropriate local agencies should also be contacted for concurrence with decisions made in these areas. Our knowledge of the environmental fate and impact of chemicals on the quality of our water resources is constantly evolving. The methodology presented in this report for defining the lower boundary of the 'designated waste' classification and 'how-clean-is- clean', from a water quality perspective,reflects our current level of understanding of these complex subjects and contains sufficient flexibility to permit modifications as our knowledge increases. The Designated Level Methodology will periodically be refined and tdated to account for the evolution of our understanding of environmental fate processes 1d the effects of chemicals on water quality. Page g Designated Level Methodology