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r u <br /> NANO oqW 'WM. 'M110 Mrw <br /> les <br /> O'EMA-,"! PAN <br /> 4' <br /> Subsurface Investigation December 12, 1990 <br /> Former Unocal Station No. 2859, Stockton, California AGS 38012-5 <br /> TABLE 2 <br /> CONCENTRATION OF HYDROCARBONS IN SOIL SAMPLES <br /> COLLECTED BENEATH UNDERGROUND STORAGE TANKS <br /> Former Unocal Service Station No. 2859 <br /> 1665 Pacific Avenue <br /> Stockton, California <br /> March and April 1988 <br /> Sample Depth Ethyl- Total <br /> Number (Feet) TPHg Benzene Toluene benzene Xylenes <br /> Gasoline TanX Cavity <br /> S-0329--1STP 16 582 0.60 6.50 10.40 39.10 <br /> S-0329-2STP 16 38 0.19 <0.05 <0.05 1.01 <br /> S-0329-35TP 16 2 0.14 <0.05 <0.05 <0.05 <br /> S-0329-4NTP 16 23 0.27 1.31 0.62 4.05 <br /> S-0329-5NTP 16 <2 0.13 <0.05 <0.05 <0.05 <br /> S-0329-6NTP 16 <2 <0.05 <0.05 <0.05 <0.05 <br /> S-0329-9A 26 13 0.29 1.07 <0.05 1.32 <br /> S-0406-12A 28 18 1.72 5.01 0.58 3.83 <br /> - S-0406-13A 30 3 <0.05 <0.05 <0.05 <A.05 <br /> Product Lines <br /> S-0330-11 6.0 <0.05 <0.05 <0.05 <0.05 <br /> Waste-oil Tank cavity <br /> S-0329-8A 8 <2 <0.05 <0.05 <0.05 <0.05 <br /> VOC PCB's <br /> S-0329-8B <0.05 <0.02 <br /> Results in parts per million (ppm) <br /> TPHg W Total petroleum hydrocarbons as gasoline <br /> < = Below detection limit for analysis <br /> used <br /> VOC = Volatile organic compounds <br /> PCB's = Poly <br /> S-0406-1STP <br /> L----- Soil sample number (STP=south tank pit, N=north) <br /> �--- Date sample collectel <br /> Soil sample <br /> -� 5 <br /> APPIled GeoSvstems <br />