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NOV-11-1991 14 09 FROM TREATEK INC TO 9-1-916-972-1683 P 02 T!eSTg � Inc. October 31, 1991 Jim Thorpe Oil Company P,O, Box 357 Lodi, California 96241-10357 Attention' Mr. Richard Thorpe SUBJECT, PROPOSAL FOR THE REMEDIATION OF EXCAVATED SOILS, JAHANT ROAD SITE, LODI, CALIFORNIA, Proposal Number- ST/91-0132 TreaTek Ino, (TreaTek) is pleased to submit the enclosed proposal for the remediation of the excavated Soils at the Jahant Road site It is TreaTek's understanding that there is approximately goo cubic yards (cu yd) of soil stockpiled on the site containing petroleum hydrocarbon compounds as gasoline in concentrations ranging from 335 mg/kg to 618 mg/kg, In order for the current land owner to gait the site, the petroleum hydrocarbon residues must be removed from these soils Due to both the nature of the soils (sandy alit to silty sands with very tittle clay material) and the • nature of the compound (gasoline),TreaTek proposes to ramediate those soils via biological means. We feet this is the most cost effwive approach for the remediation of the gasoline contaminated sod SCgpE OF WORK In order to verify the applicability of biological remediation for the Jahart Road site and determine the optimal conditions for treatment, TreaTek will conduct an Initial scientific evaluation of the soil conditions. This ev2ivaticn will consist of soil characterization, nutrient characterization, respirometric tests and analytical scans, Upon completion of this evaluation, enough data will be available to optimize the biological degradation process, Two samples will be collected from the stockpile and shipped to TreaTek's analytical treatability laboratory for evaluation. In conjunction with the scientific evaluation, a hazardous characterization evaluation must be conducted on the efts soils per San Joaquin County Health Department requirements. This evaluation will require sample analysis per the California Administrative Code, Title 22. Once the evaluation and hazardous characterization evalustfon have been completed, TreaTek will prepare a site biological remediation work plan as well as a site specific health and safety plan The work plan will provide detailed discussions/descriptions of our proposed remedlal process including methodologies and rationale. The site health and safety plan will Identrfy site specific hazards and characterize proper protection against these hazards. Both the work plan and the health and safety plan will be submitted to the San Joaquin County Environmental Health Department and Air Pollution Control District for review, concurrence and approval. Once approved by the county, the remediation will begin. Environmental Service Subsidiary of 27D1 Cjsj Hjilimer Lane Suite 103 Stockton S;Olitornia 45210• Pham 209/472-2020• Fax 21191=72-,?027