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Table 1: Sunmnary of Soil Boring Analytical Data Valentine(Castle Motors) 2315 N.Et Dorado Stockton,CA Project No.723.2 Soil Sartaple Analysis Date Boring Depth Benzene Toluene Ethyl Total TPH TPH-MO MTBE DIPE ETBE TAME TBA u Benzene Xylenes Gasoline ug/Kg ug/Kg ug/K8 nWKB 06/23/96 B Ill ND<3 ND<3 ND<3 ND<3 ND 16' <41 7.2 11 33 1,900 N/A <270 N/A N/A N/A N/A 21' <15 620 1,400 6,300 500 N/A <100 N/A N/A N/A N/A 26' 1 7,800 75,000 80,000 1 150,000 5,200 N/A <3,300 1 N/A N/A N/A N/A 31' 61,000 83,000 120,000 170,000 13,000 NIA <330 N/A N/A N/A N/A 36' 38,000 50,000 36,000 "'000 3/400 N/A <330 N/A N/A N/A N/A 41' 36,000 26,000 16,000 43,000 1,100 NIA <170 N/A N/A N/A N/A 46' 76,000 63,000 73,000 170,000 8,000 N/A <330 N/A N/A N/A N/A 51' 24,000 26,000 16,000 56,000 2,300 N/A <170 N/A N/A N/A N/A r 06/23/96 MW4 36' ND<3 ND<3 ND<3 ND<3 ND<1 N/A ND<20 N/A N/A N/A N/A 41' <15 <15 <15 <15 11 N/A <100 N/A N/A N/A N/A 45' 140 <45 <45 2,100 1,400 N/A <300 N/A NIA N/A N/A 06/23/96 MW-5 26' <15 <15 <15 <15 ND<1 N/A <250 N/A N/A N/A N/A 31' <8 <8 <8 <80 ND<1 N/A <130 N/A N/A N/A N/A 36' <8 <8 <8 <80 700 NIA <130 N/A N/A N/A N/A 41' 860 540 530 2,000 170 N/A <250 N/A N/A N/A N/A 46' 330 50 100 1 <15 120 N/A <250 N/A N/A I N/A N/A ..r 06/23/96 MW-6 31' <6 <6 <6 <6 58 N/A <40 N/A N/A N/A N/A 36' <6 <6 <6 <60 5 N/A <40 N/A N/A N/A NIA 41' 2 800 290 450 19,000 900 N/A <420 N/A N/A N/A N/A 46' 260 <15 130 <150 65 N/A <250 N/A N/A N/A N/A 09/30/97 SP-6 35' ND<5 ND<5 ND<5 ND<10 ND<1 N/A ND<20 N/A N/A N/A N/A 08/20/99 MW-101 67.5-68' 1 342 1,230 346 1,520 44 N/A ND<50 ND<50 ND<50 ND<50 ND<200 08/21/99 SB-201 80.5-81' 185 595 116 636 7 NIA ND<50 ND<50 ND<50 ND<50 ND<200 �..r 95.5-96' 368 1,050 235 1,120 26 N/A ND<50 ND<50 ND<50 ND<50 N13<200 111-111.5' 33 127 36 193 4 N/A ND<5 ND<5 ND<5 ND<5 ND<20 10/24/01 MW-201 110.5-111' 3.2 10.3 3.0 179 ND<1 N/A ND<5 ND<5 ND<5 ND<5 ND<20 116.5-117' 9.6 32.3 8.7 60.6 1.1 N/A ND<5 N/A N/A N/A N/A 127.5-128-1 32.7 138.0 36A 247.0 5.1 N/A ND<5 ND<5 ND<5 ND<5 ND<20 wr 11/20/03 MW-7 30' <3 <3 <3 <3 ND<1 N/A ND<5 N/A N/A N/A N/A 41' <3 <3 <3 <3 ND<l N/A ND<5 N/A N/A N/A N/A 11/21/03 92' <3 <3 <3 <3 ND<1 N/A ND<5 NIA N/A N/A N/A ..r 11/25/03 MW-8 30' <600 611 2,870 191300 2010 N/A <1000 N/A N/A N/A N/A 40' <3 <3 <3 <3 ND<1 NIA ND<5 N/A N/A N/A N/A 75' 69.3 34.6 4.5 18.1 ND<1 N/A ND<5 N/A N/A N/A N/A 11/24/03 MW-9 30' <3 <3 <3 <3 ND 40' <3 <3 <3 <3 ND<1 N/A ND<5 N/A N/A N/A N/A 80' <3 <3 <3 <3 ND<1 N/A ND<5 NIA N/A N/A N/A .r w r Geological Technics Inc. Page 2 Valentine(Castle Motors) ■.r