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i PROPOSED REMEDIATION EFFORT We are recommendation the 124 cubic yard of contaminated soli be treated by aeration of the soils. San Joaquin County has reviewed the application for aeration and exempted the site. The exemption was granted because of the overall small amount of contamination involved in the soils . We would like to start aeration of the soils on September 14, 1990 by removing the 6 mil plastic sheeting covering the 124 cubic yards of contaminated soils . The week of the September 19, 1990 we will bring in equipment to move the soil around on the designated stock pile site. The intent of the moving of the soil is to release contaminates by exposing soil to air and sun light. Starting on or before October 1, 1990 two representative soil samples will be taken from the contaminated soil stock pile and sent to the laboratory for analysis by EPA Method 8020 and GC-FID for paint thinner. The screen of the soil for representative soil samples will be done by the using GasTech Model 1314 or Davis Model 850 hydrocarbon detector. All soil samples taken will be tracked by a formal chain-of-custody of samples to maintain the integrity of samples taken. All soil samples taken shall be with brass sampling tubes to minimize disturbance of soil sample. Once a sample is taken the brass tube shall be sealed with teflon caps and duct tape on both ends. The samples shall be labeled and placed in a cold storage box for transportation to the laboratory. Each sample taken will be issued its own sample identification number for identification proposes. Screen and aeration of contaminated soils in the stockpile will continue until no detectable contamination of soils is reported. Each two weeks two samples of soil will be sent to the laboratory for analysis by EPA Method 8020 and GC-FID. Movement of soil for aeration purposes is anticipated every two to three weeks depending on field measurements and laboratory analysis. We anticipate the aeration of the soils to be complete with eight weeks or by November 14, 1990 . ' A summary report with all laboratory analysis will be submitted to San Joaquin County Environmental Health Division upon completion of aeration on or before November 14, 1990. Once soil aeration is complete all stockpile soils will be returned to the excavation and all work will have been complete on the remediation project. TIME SCHEDULE Our time schedule is eight weeks starting from September 14, 1990 for completion of remediation effort at the site. HEALTH PLAN •r A six foot chain-link fence has been erected around soil removal area to prevent anyone entering the area. Area entrance is through a ten foot gate to the area. The fence will remain in place until the soils are returned to the hole. The gate to the excavation is padlocked for safety. Appropriate cloth overalls and rubber gloves will be worn to protect those in immediate contact with soil when deemed necessary because of contamination levels. Nearest hospital to the project site is Lodi Memorial at 975 South Fairmont Street in lodi .