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Cumulative Table of WOata and Analytical Results Vertical Measurements are in feet d Analytical results are in parts per billion b ' i; Well Ground Depth j DATE Head Water To Notes TPH- Benzene Toluene Ethyl- Xylene MTBE Elev Elev Water Gasoline Benzene ' MW-9 11 J 06/27/94 265 -1395 1660 - 90 0 9 05 0 5 ND - 09/29/94 2 65 -1511 1776 - 64 ND 0 7 ND 0 6 -- 12/08/94 265 -14 66 1731 -- 55 0 6 <0 5 <0 5 <0 5 _t 03/08/95 265 -1233 14 98 -- 4 90 <0 5 <0 5 <0 5 <0 5 - 06/01/95 265 3 -1092 1357 - <50 <0 5 <0 5 <0 5 <0 5 -- 09/11/95 265 -1285 1550 - 100 <0 5 <0 5 <0 5 <0 5 --� 12/05/95 265 -1325 15'90 -- 110 <0 5 <0 5 <0 5 <0 5 -- 03/18/96 265 -897 11 62 - <50 <0 5 <0 5 <0 5 <0 5 -- 06/18/96 265 -921 11 86 -- <50 <0 5 <0 5 <0 5 <0 5 <5 0 L 09/24/96 2 65 -921 11 86 - 2200 21 <0 5 2 6 <0 5 1500' 12/04/96 265 -11 00 1365 -- 1200 3 0 <1 0 <1 0 <1 0 2500 1r 02/25/97 2 65 -670 935 -- 120 <0 5 <0 5 <0 5 <0 5 1200 05/06/97 2 65 -748 1013 - <50 <0 5 <0 5 <0 5 <0 5 3500 09/29/97 265 -1023 1288 -- <1000 <10 <10 <10 <10 1700 - 11/25/97 265 -1011 1276 * 91 <0 5 <0 5 <0 5 <0 5 1600 03/26/98 265 -395 660 *** <50 5 3 <0 5 <0 5 <0 5 5201 06/24/98 265 -543 808 *** <50 <0 5 <0 5 <0 5 <0 5 320{ 00/10/98 265 -744 1009 -- <50 3 4 <0 5 <0 5 <0 5 390 12/17/98 265 -775 10,40 -- <50 <0 5 <0 5 <0 5 <0 5 530, 03/10/99 265 -563 828 -- <50 <0 5 <0 5 <0 5 <0 5 540 3 1i t I I I *MTBE and TAME by EPA 8260 were detected with respective values of 2100 and 65 ppb Ethanol,t-Butanol, DIPE and ETRE by EPA 8260 and Methanol by EPA 8020 were not detected, see lab report for detection limits *"*I,See Table of Additional Analyses I I +l y a L� 81alne I ec,l+Services, Inc 990310 Z 1 1 st-0 1999 Monitoring at Chevron 9-4275 2905 W Benjamin Holt Dr,Stockton,CA 14