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mobm m m m mW m m m m m = m 0 Table 5-1 Summary of Simulprobe soil and groundwater sampling results for boring NP-1 by Method 8020 at former UNOC No 0187, 437 E Miner Ave , Stockton, CA , sampled November 16-18, 1998 Soil Samples Sample TPH-Gasoline MTBE* Benzene Toluene Ethylbenzene Total Xylenes Depth (ft bgs) Sample ID mg/kg mg/kg mg/kg mg&g mg/kg mg/kg COMMENTS 10 NPi-10 ND<1 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 20 NP1-20 34 ND<0 005 ND<0 005 0 019 022 14 30 NP1-30 4 3 ND<0 005 ND<0 005 0 023 0 14 010 32 NP1-32 390 027 16 1 5 69 15 40 NP1-40 43 0 31 072 16 4 0 74 50 NP 1-50 34 0 047 029 061 050 42 60 NP 1-60 420 57 3 0 11 59 37 70 NPI-70 41 076 025 13 062 6 6 80 NP1-80 35 0 038 0 029 017 0 082 076 90 NP1-90 ND<1 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 100 NP1-100 ND<1 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 110 NP1-110 ND<1 0 010 0 011 0 040 0 023 019 119 NP1-119 ND<1 ND<0 005 ND<0 005 ND<0 005 ND<0 005 ND<0 005 Water Samples Sample TPH-Gasoline MTBE* Benzene Toluene Ethylbenzene Total Xylenes Depth (ft bgs) Sample 1D ug/L ug/L ug/L ug/L ug/L ug/L COMMENTS 32 NPI-32 12000 16 770 52 720 2000 40 NP1-40 no water yield 50 NP1-50 13000 11 680 43 620 1700 60 NP1-60 71000 3100 4200 12000 1900 12000 70 NP1-70 73000 930 1100 9000 2500 22000 80 NPI-80 1200 27 51 260 49 280 90 NP1-90 660 10 86 62 20 120 100 NP1-100 700 9 2 6 9 52 20 120 110 NP1-110 2500 16 38 220 87 560 119 NPI-119 no water yield ND Not Detected at the Indicated Practical Quantification Limit(Reporting Limit) ft bgs=feet below ground surface MTBE confirmation results by Method 8260(given in Table 5-2)were all ND Indicating these Method 8020 results are false positives 1 �Y ARCADIS GERAGHTY&MILLER GIAPRO_SBOIUNOCALIC_VALLEYWIINERIREPORTIUNCO0187 XLS