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Harding Lawson Associates <br /> Log of Site Visits - Exxon Station 7-3942 <br /> 4444 North Pershing Street, Stockton, California <br /> September 9, 1986 Surveyed and sampled approximately 300 Cubic yams <br /> Of excavated soils; 24 samples for 6 composites. <br /> Samples delivered to laboratory. 10 hours <br /> September 18, 1986 Coordinated spreading of soils for aeration. <br /> Equipment could not excavate deeper (no extender <br /> arm) . AEMC excavated waste oil tank soils. <br /> Collected ground-water sample and delivered to <br /> laboratory. 12 hours <br /> September 23, 1986 AEMC excavating additional soils from gasoline tank <br /> excavation. Sampled excavation floor at 20-21 <br /> feet. Surveyed soil stockpile; 12 samples for 3 <br /> composites. Samples delivered to laboratory. <br /> 13 hours <br /> October 3, 1986 Screened stockpiles and collected 12 samples for 3 <br /> composites. Samples delivered to laboratory. <br /> 11 hours <br /> October 20, 1986 Sampled aerated soils. 5 hours <br /> November 13, 1986 Sampled aerated soils. 4 hours <br /> November 21, 1986 Sampled aerated soils. 4 hours <br />