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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. 89-163 WASTE DISCHARGE REQUIREMENTS FOR KEARNEY-KPF CLOSURE OF SURFACE IMPOUNDMENTS SAN JOAQUIN COUNTY The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) finds that: 1. Kearney-KPF (hereafter Discharger) is an unpermitted facility. Waste discharge requirements (WDRs) are needed for closure of the surface impoundments and to impose a monitoring program. 2. The Discharger has submitted many reports including a Hydrogeologic Assessment Report dated 24 July 1986, a Ground Water Assessment Plan dated 11 May 1989 and a Closure Plan dated 30 May 1989. The Closure Plan proposed soil and risk assessments and four alternatives for closure. Based on the results of the soil and risk assessments, one alternative will be selected to close all of the surface impoundments. The time schedule in Section C of these WDRs requires the Discharger to submit a Report of Waste Discharge and the Selected Closure Alternative Documentation. 3. The alternatives in the Closure Plan are: 1) excavation and off-site disposal of soil which requires remediation, verification sampling, grading and revegetation; 2) leaving soil which requires remediation in-place and placement of a clay cap; 3) excavating and encapsulating soils which require remediation in an on-site cell (liner and cap) ; and 4) grading the area to divert drainage away from the surface impoundments. 4. The Discharger is a manufacturer of high voltage switching devices. The 12.6 acre facility, assessor parcel number 117-080-06, is a wholly owned subsidiary of Kearney-National Inc. of Atlanta, Georgia. The facility is in northeast central Stockton at 1624 East Alpine Avenue in Section 35, T2N, R6E, MDB&M as shown in Attachment "A" which is incorporated herein and made part of this Order. 5. Waste disposal activities from the manufacturing process have occurred in the eastern portion of the facility in surface impoundments, dry wells and by spillage to the ground. Waste disposal to the surface impoundments has caused soil contamination from heavy metals. Solvent disposal outside of the surface impoundments has contributed to ground water contamination by volatile organic constituents (VOCs). 6. The inactive waste management units to be closed consist of three unlined surface impoundments: Pond 1 , Pond 2 North (2N) and Pond 2 South (2S) , as