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TABLE ANALYTICAL RESULTS OF SOIL SAMPLES Global Materials Management 1640 Broadway Avenue, Stockton, California (mg/kg) 6020/6020A Depth TPH-d TPH-mo Sb As Ba Be Cd Cr Co Cul Pb Mo Ni Se Ag V Zn Hg Sample ID Location (ft) Date S6SW-N north sidewall - S6 2' 08/15/18 <10 <50 <1.0 1.93 137 <0.5 <0.5 54.5 13.4 24.4 4.25 <5.0 38.0 <1.0 <1.0 45.9 56.0 <0.01 excavation Floor (bottom) - S6 S6B-2 excavation 2' 08/15/18 <10 <50 <1.0 2.58 144 <0.5 <0.5 56.9 13.6 26.1 4.74 <5.0 39.8 <1.0 <1.0 48.5 60.4 0.013 S6SW-S south sidewall - S6 2' 08/15/18 66.2 * 191 <1.0 6.06 152 <0.5 <0.5 55.7 14.2 28.8 7.14 <5.0 22.2 <1.0 <1.0 48.2 70.9 0.014 excavation SPA Main excavation _ 08/15/18 464- 1,550 <1.0 7.07 229 <0.5 <0.5 61.6 15.0 39.3 66.3 <5.0 46.6 <1.0 <1.0 50.2 211 0.050 stockpile SP-2/SP-3 S6 excavation stockpile - 08/15/18 27.4 * 134 <1.0 7.76 156 <0.5 <0.5 54.5 14.2 28.2 17.6 <5.0 38.3 <1.0 <1.0 46.9 84.9 0.047 SP -4 Client generated _ 08/15/18 226 * 924 <1.0 19.5 204 <0.5 1.29 63.9 14.3 58.4 96.8 <5.0 25.6 <1.0 <1.0 41.1 416 0.323 stockpile S12-2 sample point west of S5 1 2' 08/31/18 10.9 1 <10 I - I - I - - - 89.0 1 - I - 1 7.14 1 - I - I - - - - - STLC: results in milligrams per liter (mg/I) Samples collected by SJCEHD S1 Used Oil Storage Area 01/18/18 9.55 45.9 S3 SE Corner Pad 01/18/18 1.69 Samples collected by AGE B-5 floor (bottom) - SW 5' 08/15/18 - - - - - - - 0.164 - - - - - - - - - - excavation S5-2 sample point west of 2' 08/15/18 - - - - - - - 1.20 - - 7.25** - - - - - - - SW excavation S5-5 sample point west of 5' 08/15/18 - - - - - - - 0.216 - - - - - - - - - - main excavation S6-5 sample point east of SW 5' 08/15/18 - - - - - - - 0.092 - - - - - - - - - - excavation S7-2 sample point east of S6 2' 08/15/18 - - - - - - - 0.295 - - - - - - - - - - S7-5 sample point east of S6 5' 11/01/18 - - - - - - - 0.088 - - - - - - - - - - S8-2 sample point north of 2' 08/15/18 - - - - - - - 0.101 - - - - - - - - - - main excavation S8-5 sample point north of 5' 11/01/18 - - - - - - - 0.065 - - - - - - - - - - main excavation S9-2 sample point north of S6 2' 08/15/18 - - - - - - - 0.270 - - - - - - - - - - excavation S9-5 sample point north of S6 5' 11/01/18 - - - - - - - 0.063 - - - - - - - - - - excavation S11-2 sample point northeast 2' 08/15/18 - - - - - - - 0.115 - - - - - - - - - Of S9 S11-5 sample point northeast 5' 11/01/18 - - - - - - - 0.065 - - - - - - - - - of S9 Environmental Screening Levels - All Levels in miligram per kilogram (mg/kg) DTSC-SL(com) - - - 0.36 - - - 170,000 - - 320 - 64,000 - 1,500 1,000 - 23 DTSC-SL(res) - - - 0.11 - - - 36,000 - - 80 - 490 - 390 390 - 4.5 EPA-RSL(com) - - 470 3.0 220,000 2,300 980 1.8+6 350 47,000 800 5,800 22,000 5,800 5,800 5,800 35,000 46 EPA-RSL(res) - - 31 0.7 15,000 160 71 120,000 23 3,100 400 390 1,500 390 390 390 23,000 5.1 California Hazardous Waste Limits (mg/I) - - - - - - - 5.0 - - 5.0 - - - - - - - SFBRWQCB ESL (Com) - 140,000 - - - - - - - - - - - - - - - -