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�. �� e � �r err � � � _,� � � �_ � 1♦ , n TABLE 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES EPA Method 8015/8020/8260 Den's Auto Repair- 308 South El Dorado Street, Stockton, California Well Sample Ground Screen TPH g Benzene oluene Ethyl- Xylene MTBE DTPE ETBE TAME TBA Methanol Ethanol EDB 1,2- I D, Date Water luterval benzene 8260 1)CA Depth (feet bsg) N4W2A 09-24-97 30 70 65-60 feet 11,000 1,900 55 260 990 <75 120 <75 <75 <375 -- -- __ 04-09-98 2564 9,400 2,100 48 70 110 <10 61 <10 <10 <100 11-20-98 2547 5,900 1,100 28 54 53 <20 200 <20 <20 <100 -- -- __ 09-23-99 2482 4,720 95 10 <0 5 <0 5 130 170 <0 5 <0 5 <0 5 -- -- -- 12-30-99 2633 650 93 23 28 46 67 41 18 41 <0 5 03-30-00 2333 2,990 175 54 76 93 <0 5 25 <0 5 <0 5 <10 -- -- <5 0 <5 0 04-09-01 2418 1,590 145_ 5.5 6.4 11 <0 5 44 <0 5 <0 5 <10 <25 <25 <0 5 <0 5 10-18-01 2609 410 38 2,0 22 41 <1 0 20 <1 0 <1 0 <5 0 <500 <50 <1 0 <1 0 02-26-02 25 18 2,700 71 60 11 16 <5 0 57 <1 0 <1 0 35 <1,000 <50 <0 5 <0 5 01-31 3 26 84 2,400 200 14 26 29 <1 0 30 <1 0 <1 0 <10 -- — <0 5 <0 5 i 2B 09-24-97 3032 45-25 feet 11,000 120 20 190 1,500 <30 74 <30 X30 <150 04-09-98 2536 4,700 340 10 85 44 <2 0 15 <2 0 52 200 -- -- - - 11-20-98 2503 5,300 1,100 11 250 230 <25 <25 <25 <25 650 09-23-99 2448 3,235 900 30 195 420 1,250 17 <0 5 250 <0 5 12-30-99 2505 4,240 220 86 42 648 202 26 131 454 <0 5 03-30-00 2340 20,800 82 7.0 11 36 <0 5 29 <0 5 36 <10 -- -- <5 0 <5 0 04-09-01 2391 4,680 490 10 90 74 20 <0 5 <0 5 <0 5 160 <25 <25 <0 5 <0 5 10-18-01 2574 3,900 97 12 7.8 26 39 20 <1 0 <1 0 480 <500 <50 <1 0 <1 0 - 02-26-02 2498 2,700 67 9A 31 51 34 32 <1 0 <1 0 630 <1,000 <50 <0 5 <0 5 01-31- 2656 2,800 21 5 7 22 295 29 <1 0 <1 0 1 <1 0 1 <10 -- <0 5 <0 5 Notes Methyl tertiary Butyl Ether(MTBE) Ground water depth measurements in feet tertiary-Amyl Methyl Ether(TAME) ligll micrograms per liter ternary-Butanol(TBA) TPH-g=Total petroleum hydrocarbons quantified as gasoline ethyleuedibromide(EDB) - Di-isopropyl Ether(D1PE), 1,2 dichloroethan(1,2-BCA) % Ethyl ternary-Butyl Ether(EME), Advanced GeoE+nvironmental,Inc