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NVORK PLAN FOR HYDROCARBON-IMPACTED SOIL REMEDIATION PROGRESS DRILLING February 1995 Art & Artists 204 East Lodi Avenue Lodi, California 1.0. INTRODUCTION In accordance with the request of Mr. James DeMera of Mullen, Sullivan & Newton, Advanced GeoEnvironmental, Inc. (AGE) has prepared this Work Plan for soil remediation monitoring at 204 East Lodi Avenue in Lodi, California (Figure i - Location klap). The scope of work includes the drilling of up to two soil borings at the site. The work plan is prepared in accordance with San Joaquin County Public Health Services - Environmental Health Division (PHS-EIID) and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites. 2.0. BACKGROUND In July 1994, a Final Remedial Plan (FRP) for the site v,'as prepared by Geological Audit Services, Inc. (GAS). The FRP recommended installation of a soil vapor extraction/in-situ air sparging (SVE/IAS) system for hydrocarbon-impacted soil and ground water remediation. The FRP was approved by the PHS-EHD in August 1994. In July 1995, an SVE/IAS system was installed inside a fenced enclosure at the southeast corner of the Art & Artists building. The system began operation in August 1995. Remediation monitoring recommendations contained in the FRP included the biannual drilling of soil borings and collection of soil samples to evaluate progress of the SVE system. 3.0. SCOPE OF WORK 11. DRILLING AN-D SAMPLING The scope of work will include the drilling of one or two soil borings within the estimated area of impacted soil. Estimates are based upon information contained in the Problem Assessment Report (PAR) and FRP, both prepared by GAS. Initially, a single boring will be advanced approximately 15 east well MW-1, immediately outside the fenced enclosure containing the SVE/IAS systems. If hydrocarbon-impacted soil is not encountered in samples collected from the first boring, a second boring will be advanced