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r <br /> Table 1 <br /> HISTORICAL GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA <br /> CHEVRON SERVICE STATION#9-4275 <br /> 2905 WEST BENJAMIN HOLT DRIVE,STOCKTON CALIFORNIA <br /> WELL I n/ ETHYL— <br /> TOC ELEVATION SAMPLE BENZENE TOt[JENE BENZENE XYLENES TPH—G DTW SPT WTE <br /> feet DAVE b b b b feet feet feet <br /> MW-4 <br /> 281 03/22/89 NO NO ND NO NO 16 29 000 —1348 <br /> 06/12/89 ND NO ND ND NO 16 97 000 —1416 <br /> 09/07/89 17 NO ND NO 170 18 35 000 —1554 <br /> 12/18/89 ND ND NO ND NO 17 80 000 --14 99 <br /> 03/20/90 29 NO NO 0 9 85 17 40 000 —1459 <br /> 07/03/80 ND ND ND ND 93 1805 D 00 —15 24 <br /> 10/19/90 NO 2 8 1 5 NO 73 1958 000 —1677 <br /> 01/17/91 ND ND NO ND 150* 1919 0.00 —1638 <br /> 03/19/91 ND ND ND <br /> 07/18/91 NO ND ND ND 100 —— __ _— <br /> 7/31/91 NO NO 81 1905 000 —1824 <br /> 01/16/92 NO NO ND ND ND 180* 1952 000 —1671 <br /> 05 20 ND 1882 000 —1601 <br /> 03/11/92 -- __ _ <br /> 03/17/92 2 9 9 7 — __ 4— 17 90 000 —1509 <br /> 05/18/93 NO 9 97 150 1778 000 —1497 <br /> 08/05/93 ND ND ND ND NO 1604 000 —1323 <br /> 11/09/93 Np NO NO 1683 000 --14 02 <br /> ND NO ND ND 1752 000 —1471 <br /> MW-5 <br /> 379 03/22/89 35 23 110 760 4,000 1718 000 —1339 <br /> 06/12/89 24 2 2 53 900 1780 000 --�44.01 <br /> 09/07/89 16 4 12 50 410 1911 000 —1532 <br /> 09/07/890 15 4 11 49 380 _ -- <br /> 1 z/1 8/89 24 22 100 590 2,900 1863 000 —1484 <br /> 03/20/90 37 29 120 630 3,400 1819 000 —1440 <br /> 07/03/90 65 89 200 1,200 5,500 1943 000 --1564 <br /> . 10/19/90 55 82 190 1,100 5.900 2004 000 —1625 <br /> 01/17/91 26 51 140 830 4,900 1998 000 —1619 <br /> 03/19/91 i8 24 21 790 6,800 <br /> 07/18/91 60 65 190 800 7,600 1972 000 —1593 <br /> 10/31/91 44 24 64 <br /> 310 2.600 20 20 000 —1641 <br /> 01/16/92 120 72 250 1,000 5,400 1960 000 —1581 <br /> 01/16/92D 110 63 230 960 4.700 -- -- -- <br /> 03/11/92 -- -- —— 1864 000 —1485 <br /> 03/17/92 37 13 52 170 '1,100 1853 000 —1474 <br /> 05/18/93 58 10 170 190 2'000 1674 000 —1295 <br /> 08/05/93 32 4.6 50 100 750 1755 0 00 —1376 <br /> MW-6 11/09/93 29 38 46 190 1.400 1828 000 —1449 <br /> 143 03/11/92 -- -- —— 1699 000 —t S 5fi <br /> 03/17/32 63 23 370 57 31900 1695 000 —15.52 <br /> 05/18/93 ND 37 1 5 so 760 1518 000 —1375 <br /> 08/05/93 ND 77 39 1 6 1.300 1605 000 —1462 <br /> 11/09/93 35 1 4 ND 0 8 630 16 59 000 —1516 <br /> MW-7 <br /> 314 03/11/92 — _ __ __ <br /> 03/17/92 ND NO ND ND ND 1715 000 —140110 <br /> 05/18/93 ND NO NO ND ND 1566 000 —1252 <br /> 08/05/93 NO ND ND NO ND 1656 000 —1342 <br /> 11/09/93 ND NO NO ND ND 1729 000 —14 15 <br /> EXPLANATION Page 2 of 2 <br /> Well elevations given in feet above mean see level D = Duplicate <br /> TOC = Top of casing NO = Not detected at or above method detection limit <br /> TPH—G =Total petroleum hydrocarbons—as—gasoline - — = Not analyzed/not measured <br /> DTW= Depth to water W Does not match typical gasoline pattern <br /> SPT= Separate phase thickness NOTE See laboratory reports for method detection limits <br /> WTE = Water table elevation <br /> �TA81 WK7 <br /> GROUNDWATER <br /> --j - TECHNOLOGY <br />