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Table 1 - Soil Sample Analytical Results Tosco 76 Branded Facility No. I 1 195 16500 South interstate 5 Lathrop, California Sample Date Sample TPHg Benzene Toluene Ethyl- Xylenes MtBE MtBE Ethanal TBA DIPE EtBE TAME Lead Location Collected Depth Benzene by 8020 by 8260 and ID (feet) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) (ppm) Former Gasoline UST Complex Excavation TX-1-11 12/31/98 11 ND2 ND2 ND2 ND ND2 19 11.0 ND2 14.0 ND2 ND2 ND 2.2 TX-2-11 12/31/98 11 ND2 ND2 ND2 ND2 ND 23 13.0 ND2 51.0 ND2 ND2 ND2 ND TX-3-11.5 12/31/98 11.5 2.31 ND ND ND 0.015 6.8 7.6 ND ND ND ND ND 3.2 TX4-12 12/31/98 12 130 ND2 1.8 2.3 1.4 20 10.0 ND'- ND2 ND2 ND2 ND2 2.7 TX-5-11.5 12/31/98 11.5 ND2 ND2 ND2 ND2 ND2 50 41.0 ND2 ND2 ND2 ND2 ND2 2.2 TX-6-11.5 12/31/98 11.5 ND2 ND ND2 ND2 ND2 40 25.0 ND2 ND ND2 ND2 ND2 3.4 TX-7-11.5 12/31/98 11.5 ND2 ND2 ND2 ND2 ND2 29 20.0 ND2 38.0 ND2 ND2 ND2 1.8 TX-8-11.5 12/31/98 11.5 ND ND2 ND2 ND2 ND2 22 14.0 ND2 28.0 ND2 ND ND2 1.3 N-1-16 12/30/98 16 1,500 ND2 20 17 17 47 3.0 290.0 19.0 ND2 ND2 ND2 ND Product Lines TT-1-3.5 12/30/98 3.5 ND ND ND ND 0.27 ND ND ND ND ND ND ND ND2 TT-2-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-3-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT4-3 12/30/98 3 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-5-3 12/30/98 3 ND ND 0.0099 0.0052 0.027 0.11 ND ND ND ND ND ND ND2 TT-6-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-7-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-8-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-9-4 12/30/98 4 ND ND ND ND ND ND ND ND ND ND ND ND ND2 TT-10-3.5 12/30/98 3.5 ND ND ND ND ND ND ND ND ND ND ND ND ND2 Former Product Lines and Overexcavation TL-1-2.5 12/31/98 2.5 506 ND2 ND2 ND2 ND2 ND2 ND ND ND ND ND ND 14 TL-1-10.5 12/31/98 10.5 8203 ND2 0.56 12 85 ND2 ND2 ND2 ND2 ND2 ND2 ND2 3.8 TL-2-3 12/31/98 3 ND ND ND ND ND 0.17 ND ND ND ND ND ND 1.6 TL-3-4 12/31/98 4 ND ND ND ND ND ND ND 64.0 ND ND ND ND 2.4 TL-4-7.5 12/31/98 7.5 ND ND ND ND ND ND ND ND ND ND ND ND 1.9 TL-5-11 12/31/98 11 120' ND2 ND2 0.35 0.71 ND'- ND'- ND2 ND2 ND2 ND2 ND'- 2.7 TL-6-8 12/31/98 8 9503 ND2 ND2 4.7 53 ND2 ND2 ND2 ND2 ND2 ND ND2 2.8 TL-7-6 12/31/98 6 ND ND ND ND ND ND ND ND ND ND ND ND 2.8 140193.03 1 4/15199