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r TABLE 1 GROUNDWATER MONITORING AND CHEMICAL RESULTS FORMER REGAL STATION 603, 6425 PACIFIC AVENEUE STOCKTON CALIFORNIA WELL ` CASING TOP OF DATE D2PTH TO PROD VACUUM CORRECTED TOTAL PET BENZENE TOLUENE ETHYL XYLENES Methyl tent-Butyl DISSOLVE ELEVATION SLOT COP OF THICK AT WELL GW ELEV HYDROCARB BENZENE Ether OXYGEN FEET AMSL FEET AMSL WATER HEAD FT AMSL GAS-RANGE 8020 8260 IN FEET IN FEET IN FEET PPB PPB PPB PPB PPR PPR PPS PPM MW11 12 81 -37 19 10/01/92 57 2 0 0 00 -44 39 MW11 12 81 -37 19 10/08/92 57 2 0 0 00 -44 39 <50 c0 3 70 3 10 3 -,09 MW11 12 81 -37 19 11/11/92 56 84 0 0 00 -44 03 MW11 12 81 -37 19 12/09/92 S6 4 0 0 00 -43 59 <50 <0 3 10 3 <0 3 <0 9 MWil 12 81 1 -37 19 a1/15/93 55 78 0 0 00 -42 97 MW11 12 81 -37 19 02/08/93 54 7B 0 ❑ 00 -41 97 Mdll 12 81 -37 19 03/11/93 54 65 0 0 00 -41 B4 <50 <0 3 <0 3 <0 3 <0 9 Mk11 12 81 -37 19 04/15/93 53 92 0 -T-o0 -41 O1 MA11 12 81 -37 19 05/10/93 51 83 0 0 00 -39 02 M.411 12 81 -37 19 06/14/93 53 08 0 0 00 -40 27 <50 <0 3 <0 3 <❑ 3 MW11 12 81 -37 19 07/19/93 51 84 0 0 00 -39 03 MW11 12 81 -37 19 oe/ao/93 53 42 0 0 00 -40 61 MW11 12 81 -37 19 08/23/93 53 42 0 0 00 -40 61 Mwil 12 81 -37 19 09/15/93 53 6 0 0700 -40 79 MW11 12 81 -37 19 09/29/93 53 6 ❑ 0 00 -40 79 MW11 12 81 -37 19 09/29/93 53 6 0 0 00 -40 79 <So <0 3 -,03 <0 3 <❑ 9 MW11 12 81 -37 19 11/05/93 53 19 0 O 00 -40 38 MW11 12 81 -37 19 12/12/93 52 53 0 0 Go -39 72 MWiI 12 81 -37 19 02/10/94 52 48 0 0 00 -39 67 <50 <0 5 <0 5 <0 S <0 5 MW11 12 81 -37 19 03/04/94 50 96 ❑ -000 38 15 8010 017 campourld3 below detection 11m1ta MW11 12 fll -37 19 03/09/90 50 4 0 0 00 -37 59 <50 c0 5 <0 5 <❑ 5 <2 MW11 12 81 -37 19 04/26/94 49 84 0 0 00 -37 03 MW11 12 81 -37 19 05/19/90 50 1 0 0 00 -37 29 MW11 12 81 -37 19 06/x2/94 49 48 0 0 00 -36 67 <50 <0 5 <0 5 <0 5 <2 MW11 12 81 -37 19 C8/17/94 51 64 0 0 00 -38 B3 yWll 12 81 -37 19 09/14/94 50-5 -0 O 00 -37 69 <50 <0 5 <0 5 c0 5 <2 MW11 12 81 -37 19 10/26/94 Sp 7 0 ❑ 00 -37 89 MW11 12 BS -37 19 1x/16/94 S❑ 25 0 0 00 -37 44 <50 c0 5 c0 5 <0 5 c2 MW11 12 81 -37 19 01/25/95 19 64 0 0 00 -36 83 MW11 12 81 -37 19 03/15/95 18 73 0 0 00 -35 92 <50 <0 5 <0 5 <0 5 <2 MW11 12 81 -37 19 04/12/95 19 97 0 0 00 -36 16 MW11 12 81 -37 19 05/17/95 -4758 0 0 00 -34 77 MW11 12 81 -37 1906/21/95 47 26 0 ❑ 00 -34 45 <50 <0 5 <0 5 <0 5 <2 MWil 12 B1 -37 19 00/0l/95 47 36 0 ❑ O0 -39 55 MW11 12 81 -37 19 09/26/95 47 65 0 0-OG 2 -34 84 MR11 12 81 -37 19 70,111-1147 37 0 TOO -34 56 MW11 12 81 -37 19 11/14/95 47 05 0 0 00 -34 24 MW11 12 81 -37 19 12/12/;5 46 S5 0 -T-OO -33 74 Mr111 12 81 -37 19 01/22/96 45 62 0 0 00 -32 B1 MWll 12 81 -37 19 03/06/96 44 36 0 0 00 -31 55 <50 <0 5 <0 5 <0 5 <2 MW11 12 81 -37 19 04/09/96 43 02 0 0 00 -30 21 MW1112 81 -37 19 05/28/96 42 05 1 0 ��T2 29 24 MA11 12 81 -37 19 o6/zo/96 41 94 0 29 13 <50 <0 5 <0 5 c0 5 <2 <50 3 MW11 12 81 -37 19 07/30/96 42 62 0 9 91