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Mr. Ken Smith -2- 8 May 1990 <br /> Delta Truck Sales <br /> excavation could be completed by 1 July 1990, the water quality analysis could <br /> be completed by 1 August 1990 and that the TPCA HAR could be submitted to this <br /> office by 1 September 1990. <br /> We understand that this schedule is dependent on several favorable factors, <br /> including: <br /> 1 . The assumption that existing supply wells and the proposed three around <br /> water monitoring wells are sufficient to characterize the lateral and <br /> vertical extent of potential ground water contamination. <br /> 2. The soil borings and subsequent chemical characterization are sufficient <br /> to document the extent of soils contamination beneath and adjacent to the <br /> surface impoundment <br /> 3. San Joaquin County approval of well installation and site investigation. <br /> We also discussed waste pile remediation, disposal options and closure options <br /> and possible closure monitoring requirements. The results of the waste <br /> characterization will guide the closure issue. Delta Truck Sales must submit to <br /> this office for review and approval by 1 September 1990 a closure plan/soils <br /> remediation plan describing the methods of waste disposal and closure of the <br /> surface impoundment. A formal time schedule to bring the facility into <br /> compliance with the requirements of the TPCA will be identified in a Cleanup and <br /> Abatement Order. You will be notified prior to its issuance. <br /> If you have any questions or if I can be of assistance, please call me at (916) <br /> 361-5738. <br /> JAMES E. BRATHOVDE <br /> Associate Engineering Geologist <br /> TPCA/RCRA Unit <br /> JEB:mk <br /> cc: Mr. Ron Valinoti , San Joaquin Public Health Services, Stockton <br /> Mr. David Frank, Trainor, Robertson, Smits and Wade, Sacramento <br /> Mr. Paul Graff, Environmental Science and Engineering, Martinez <br />