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TABLE 7 TABLE 1 SUMMARY OF GROUNDWATER MONITORING AND ANALYTI, SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL RESULTS Gardner Property,Thornton,CA , Gardner Property,p r#y,Thornton,CA Page 6 of 7 Page 6 of 7 .' measured in feet MSL RE in uI measured m feet MSL Re orted in u /I Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylene Ory Well ID Date Wellhead Depth to G W Benzene Toluene Ethyl Xylenes TPHg MTBE Fuel Dtssoved Elev Water Elev Benzene Elev Water Elev Benzenef(EPA8020) Oxygenates Ox en MW6 10/29/91 1389 1630 241 e030 <0 30 <0 30 <030 MW5 10/29/91 925 1162 237 21 <0 30 <0 30 <0 30 <30 03/04/92 1389 1430 -041 <0 5 <0 5 <0 5 <0 5 03/04/92 925 963 -038 <0 5 <0 5 <0 5 <0 5 95 03/13192 1389 1397 -008 -- -- — - 03/13/92 925 930 -005 09/01/92 1389 1708 -3 19 <0 5 <05 <0 5 <0 5 09101/92 925 1239 -314 <0 5 <0 5 <0 5 <0 5 <50 - 12/03/92 1389 1606 -217 <0 5 <0 5 <0 5 <0 5 12/03/92 925 11 37 212 <0 5 <0 5 <0 5 <05 <50 03/24/93 1389 10 70 319 <0 5 <0 5 <0 5 <05 03/24/93 925 599 326 <0 5 <0 5 <0 5 <0 5 <50 07/23/93 1389 1249 1 40 <0 50 <0 50 <0 50 <0 50 07/23/93 925 778 1 47 <0 50 <0 50 <0 50 <0 50 <50 -- 12/27/93 1389 13 32 057 -- -- -- - 12/27/93 925 861 064 -- -- -- -- -- _ 03/30194 1389 1232 1 57 03/30/94 925 762 1 63 06/24/94 1389 1358 031 -- - — - 06/24/94 925 887 038 — 09/16/94 1389 1590 -2 01 <0 50 <0 50 <050 <050 09/24/94 925 11 19 1 94 12/21/94 1389 1468 -079 -- 12/21/94 925 999 -074 -- -- -- -- -- 03/30/95 1389 930 463 <0 50 <050 <0 50 <0 50 03/30/95 925 462 463 <0 50 <0 50 <050 <0 50 <50 06/30/95 1389 1048 341 -- -- - - 06/30/95 925 578 347 -- -- -- -- __ _ 09/29/95 1389 1370 019 <0 50 <0 50 <050 <050 09/29/95 925 900 025 <050 <0 50 <0 50 <0 50 <50 12129/95 1389 1299 090 -- - -- - 12/29/95 925 828 097 - - -- -- -- 03/29/96 1389 867 522 <0 5 <0 5 <0 5 <0 5 03/29/96 925 396 529 <0 5 <0 5 <0 5 <0 5 <50 06/28/96 1389 11 25 264 -- -- -- -- 06/28/96 925 655 270 - -- -- -- -- 09/30/96 1389 1444 -055 <0 50 <0 50 <0 50 <0 50 09/30/96 925 975 -050 <0 50 <0 50 <0 50 <0 50 <50 12/17/96 1389 1340 049 -- -- - - 12/17/96 925 870 055 -- -- -- -- __ _ 03/25/97 1389 828 561 <0 50 <050 <0 50 <050 ` 03/25/97 925 355 570 <0 50 <0 50 <0 50 <050 <50 06/25/97 1389 1214 1 75 -- -- -- 06/25/97 925 742 1 83 — - -- -- 09/18/97 1389 1526 1 37 <0 5 <0 5 <05 <0 5 09/18/97 925 1058 -1 33 <0 5 <0 5 <0 5 <0 5 <50 - <M DLs 12/16/97 1389 1430 -041 -- -- -- _ 12/16/97 925 962 037 -- -- -- -- -- _ 03/20/98 1389 773 616 <0 5 <0 5 <0 5 <2 03/20/98 925 298 627 <0 5 <0 5 <0 5 <2 <60 <5 06/30/98 1389 9 77 412 -_ 06/30/98 9 25 503 422 - - -- -- -_ __ -- G9129198 1389 1477 -088 <0 50 <0 50 <050 <050 09/29/98 925 1007 082 <0 50 <050 <0 50 <0 50 <50 - <1 000 12/23/98 1389 1375 0 14 -- _- 12/23/98 925 905 020 -- -- -- -- __ _ -- 04/05/99 1389 11 99 1 90 <0 50 <0 50 <0 50 <0 50 04/05/99 926 728 1 97 <050 <050 <0 50 <0 50 <50 0 <5 0 07/09/99 1389 1356 033 -- -- -- _ 07/09/99 925 887 0 38 -- -- -- -- _- _ _ 10/07/99 1389 1540 -1 51 <0 500 <0 500 <0 500 <0 500 10/07/99 925 1070 1 45 <0 500 <0 500 <0 500 <0 500 <50 0 - 12/28/99 1389 1458 069 -- -- -- -- 12/28/99 925 989 -064 -- 03/21/00 1389 11 93 1 96 <0 500 <0 500 <0 500 <0 500 03/21100 925 724 201 <0 500 <0 500 <0 500 <0 500 <50 0 <2 So 07/13/00 1389 1355 034 -- - -- - 07/13/00 925 888 037 09/27/00 1389 1495 -1 06 <0 5 <0 5 <0 5 <0 5 09/27/00 925 1027 1 02 <0 5 <0 5 <0 5 <0 5 <50 <MDLs 12/20/00 1389 1478 089 -- -- -- -- 12/20/00 925 10 09 -084 03/29/01 1389 1379 010 <0 5 <05 <0 5 <0 5 03/29/01 925 910 015 <0 5 <0 5 <0 5 <0 5 <50 <50 06/18/01 1389 1498 -1 09 -- - - - 06/18/01 925 1029 -1 04 09/24/01 1389 1609 -220 <0 5 <0 5 <05 <05 09/24/01 925 11 41 216 <0 5 <0 5 <0 5 <0 5 <50 <50 - 01/15/02 1389 1473 -084 /// 01/15/02 925 1005 -080 -- -- — __ __ 04/03/02 1 1389 1 1405 1 -0 16 1 <0 5 <0 5 1 <0 5 <10 04/03/02 925 936 --Q11 <0 5 <0 5 <0 5 <1 0 <50 <50 W\62582\TADLEB\TABLEGW xh[8/21/2002] W\62582\TABLES\TABLEGW xls[8/21/20021