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Cumulative Table of Well Data and Analytical Results Vertical Measurements are In feet Analytical results are In parts per billion(ppb) Well roueDepth — __ 15757 DATE Head Water To Notes TPH-Benzene Toluene Ethyl- Xylene TPH- MTBE EPA 1,2-DCA Phenol Oil& Cr Ca Pb N1 Zn Elev Elev Water Gasoline Benzene Diesel 8270 Grease MW-11 � 03/23/95 1038 -2322 33 60 -- -- -- -- -- -- -- -- - -- -- -- 05l26/95 1038 -21 91 3229 -- 340 67 <0 5 11 72 170* -- -- 79 14 <5000 44 - 15 59 110 08/15/95 1038 -2140 3178 -- 57 12 <0 5 079 0 67 54* -- -- 58 <5 0 <5000 150 - 92 150 260 11/16/95 1038 -2047 3085 4900 750 <12 100 150 650* -- -- 17 8 3 <5000 <10 -- <100 <50 20 02/27/96 1038 -1906 29 44 -- 1200 130 <2 5 45 28 500" -- -- 17 <5 0 <5000 <10 -- <100 <50 33 05/15/96 1038 -1748 2786 -- 240 3 8 <0 5 21 <0 5 -- 19 -- -- -- -- -- -- -- -- -- 06/19/96 1038 -1703 2741 -- -- -- -- -- -- 350* -- <5 0-<10 15 <5 0 <5000 <10 -- <100 <50 20 08/22/96 1038 -1668 2706 -- 3500 590 <10 <10 270 1800* 510 ** 33 43 <5000 <10 -- <100 <50 17 11/25/96 1038 -1627 2665 -- 8400 $00 <10 140 550 1300* 110 <5 0-<10 81 12 7900 <10 -- <100 <50 35 05/19/97 10 38 -13 56 2394 -- 8600 1700 <20 420 430 1600* 1900 **' 49 32 <5000 <10 <100 <50 210 08/21/97 1038 -1420 2458 -- 5900 1100 <10 340 330 1000' 1300 **** 44 93 <5000 <10 -- <100 <50 120 11/17/97 1038 -1517 2555 -- 5000 780 <10 180 150 1400* 1300 + 14 7 7 17,000 <10 -- <5 0 <50 35 11/17/97 1038 -1517 25 55 EPA 8260++ -- -- -- -- -- -- 1800 -- -- -- -- -- -- -- -- -- 02/09/98 1038 -2205 3243 -- 620 110 1 8 15 23 130* 280 <5 0-<10 8 2 <5 0 <5000 <10 -- <100 <50 85 05/21/98 1038 -919 1957 -- <50 <0 5 <0 5 <0 5 <0 5 500* 41 <5 0-<10 <0 5 <5 0 <5000 <10 -- <100 <50 180 05/21/98 1038 -919 1957 EPA 8260 ++ -- -- -- -- -- -- 49 -- -- -- -- -- -- -- -- -- 08/11/98 110 38 -900 1938 -- 1200 71 4 5 2 0 79 1000` 300 A 47 <5 0 5500 <10 -- <5 0 <50 270 11/09/98 1038 -1014 2052 -- 2400 420 <10 12 30 600* 7000 +++ 47 <5 0 <5000 <10 -- <5 0 <50 150 02/17/99 1038 -927 1965 -- 87 <0 5 077 0 6 <0 5 220' 80 <10-<50 096 -- <5000 <10 <10 <5 0 <30 43 7 05/25/99 1036 -8 74 1912 -- <50 <0 5 <0 5 <0 5 <0 5 140* 210 <5 0-<50 29 <5 0 <1000 <10 <10 <20 10 140 `Chromatogram pattern indicates an unidentified hydrocarbon **2-Methyinaphtalene and Naphthalene were 8 7 and 33 ppb respectively ***2-Methylnaphtalene and Naphthalene were 8 7 and 50 ppb respectively ****Naphthalene was detected at 34 ppb +2-Methyinaphtalene and Naphthalene were 5 3 and 35 ppb respectively ++Ethanol, t-Butanol, DIPE,TAME and ETBE by EPA 8260 were not detected,see lab report for detection limits +++Naphthalene was detected at 6 8 ppb ^Dlethylphthalate was detected at 6 9 ppb Blaine Tech Services,Inc 990525-R-1 2nd-Q 1999 Monitoring at Chevron 9-2033 508 W Charter Way,Stockton,CA j I