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Q <br /> May 18, 1988 AGS Job No. 038032--1 <br /> UNOCAL Station No. 6981, Stockton, California <br /> of Custody Record will be initiated by the sampler in the field <br /> and accompany the samples to the analytical laboratcry. A copy <br /> of this record will be included in the Appendix of our report. <br /> Soil removed during excavation will be stockpiled at the site and <br /> covered. Due to the low hydrocarbon concentrations previously <br /> detected the sail is expected to be under 100 parts per million <br /> total petroleum hydrocarbons. Applied GeoSystems will arrange to 3 <br /> have this soil removed to an appropriate disposal facility. <br /> LABORATORY ANALYSES <br /> Soil samples selected for testing will be analyzed for total <br /> petroleur+ hydrocarbons (TPH) and the volatile constituents <br /> benzene, toluene, ethylbenzene, and total xylene isomers by EPP. <br /> Method 8015 (modified) and EPA Method 8020, respectively. <br /> Detection limits suitable for the tests requested, and <br /> concentrations present will be stated on the laboratory. report. <br /> The analyses will be performed by a laboratorycertified by the <br /> State of California. <br /> 7 <br /> +� <br /> Applied GeoSystems <br />