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CLEANUP AND ABATEMENT ORDER -2- SOUTHWEST HIDE COMPANY SAN JOAQUIN COUNTY water pollution. The Board has requested, as supplemental information to the Report of Waste Discharge, the discharger' s plans ( including time schedule) to retrofit the impoundments to Subchapter 15 Class II standards. 8. The characterization of the site's hydrogeology is insufficient. There has been no interpretation of the lithology of the site, based upon completed well and soil boring logs; no identification of the potential pathways of migration; and no estimation nor determination of aquifer characteristics (i .e. , permeability, hydraulic gradient, flow velocity) . 9. The areal and vertical extent of the ground water pollution plume has not been delineated. 10. The Discharger has discharged wastes in violation of Board Order No. 80-061 and has polluted ground water. IT IS HEREBY ORDERED, that pursuant to Section 13304, 13260, and 13267 of the California Water Code, Southwest Hide Company shall prepare a technical report based upon the field activities and studies conducted as of the effective date of this Order. This report should be submitted to this office by 5 April 1989. In addition, Southwest Hide Company shall submit, to this office, a Beneficial Use Analysis and Ground Water Remedial Action plan, by 1 August 1989. These reports should include the following: 1. TECHNICAL REPORT A. Pollutant Source Identification And Delineation Numerous references are made within the technical reports and correspon- dence associated with this site regarding potential historical and existing sources of pollution. These sources include the surface impoundments, leachfield, broken sewer line, washrack, four brine storage tanks, waste brine collection tanks, salts storage facilities, stormwater runoff, and previous site occupants. The current status of each potential source, based upon the finding of the ongoing investigation, should be discussed. The objectives of this activity are to identify all potential sources and delineate the areal and vertical extent of soil pollution. Each potential source should be separately assessed. If existing data are insufficient to adequately assess and/or mitigate a potential source, then a field investigation work plan, including time lines, should be