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�sz <br /> Work Plan September 5, 1990 <br /> ARCO Station 545, Stockton, California AGS 30004-2 <br /> o Drill two soil borings to approximately 20 feet in the area where a new tank <br /> cavity may be excavated. <br /> ® o Collect relatively undisturbed soil samples from each boring at 5-foot intervals <br /> or other appropriale intervals from the ground surface to the total boring <br /> depth and classify the samples according to the Unified Soil Classification <br /> System. <br /> ® o Collect four discrete soil samples from the stockpiled drill cuttings to be <br /> composited into one sample for analyses to evaluate disposal options. <br /> o Analyze the soil samples for total petroleum hydrocarbons as gasoline(TPHg) <br /> and benzene, toluene, ethylbenzene, and total xylene isomers (BTEX). <br /> o Backfill borings with a slurry of cement, bentonite, and water. <br /> o Prepare a report including our interpretations, conclusions. <br /> FIELD PROCEDURES <br /> ;safety Plan <br /> '$ The attached site safety plan (Applied GeoSystems, March 23, 1990) describes the basic s <br /> safety requirements for the drilling of soil borings at the work site. The site safety plan is <br /> ® <br /> applicable to <br /> pp personnel of-Applied GeoSystems and to subcontractors of Applied <br /> ' GeoSystems. The Applied GeoSystems geologist will be the Site Safety Officer. Personnel <br /> fi <br /> - � t the site will be informed of the contents of the site safety Plan before work begins. A <br /> copy of the plan will be kept at the work site and will be available for reference by <br /> appropriate parties:during the.work. <br /> a. <br /> Aqp/sed oGeoSystems <br />