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agpm m m mm m mw r Project No S8100-06-11A June 29, 1995 TABLE I1] CUMULATIVE SUMMARY OF GROUNDWATER MONITORING DATA AND ANALYTICAL RESULTS CALTRANS STOCKTON YARD MAINTENANCE FACILITY STOCKTON, CALIFORNIA PAGE 1 OF 2 WELL ID DATE DEPTH TO TOC GROUNDWATER TPHg TPHd B T E K SAMPLED GROUNDWATER ELEVATION (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) BY MW-1 04/06/92 65 96 21 49 -44 47 4,900 180* 1,100 360 <3 400 AG MW-1 10/22/93 67 92 21 49 -46 43 27,000 --- 11,000 1,500 <50 1,400 EA Mw-1 06/01/94 65 68 21 49 -44 19 1,500 <50 13,700 418 14 5 206 N&M Mw-1 03/06/95 65 01 21 49 -43 52 2,200 280 150 75 13 71 Geocon MW-ldup 03/06/95 65 01 21 49 -43 52 2,300 --- 150 80 13 71 Geocon MW-1 03/08/95 65 03 21 49 -43 54 --- --- --- --- --- --- Geocon Mw-1 05/02/95 64 18 21 49 -42 69 --- --- --- --- --- --- Geocon Mw-1 05/05/95 --- 21 49 --- 2,900 <50 240 110 13 100 Geocon MW-ldup 05/05/95 --- 21 49 --- --- <50 --- --- --- --- Geocon Mw-2 04/06/92 66 17 21 71 -44 46 3,200 73* 450 12 <3 49 AG MW-2 10/22/93 68 12 21 71 -46 41 4,500 --- 1,000 93 25 170 EA MW-2 06/01/94 65 85 21 71 -44 14 588 <50 337 151 <2 5 45 7 N&M Mw-2 03/06/95 65 28 21 71 -43 57 1,400 100 150 10 5 3 15 Geocon MW-2 03/08/95 65 21 21 71 -43 50 --- --- --- --- --- --- Geocon MW-2 05/02/95 64 36 21 71 -42 65 --- --- --- --- --- --- Geocon MW-2 05/05/95 --- 21 71 --- 600 <50 78 11 2 5 10 Geocon MW-3 04/06/92 65 98 21 41 -44 57 2,400 84* 260 9 8 <3 22 AG MW-3 10/22/93 67 80 21 41 -46 39 4,700 --- 520 100 9 0 110 EA MW-3 06/01/94 65 48 21 41 -44 07 1,200 <50 238 411 <5 0 295 N&M MW-3 03/06/95 65 01 21 41 -43 60 1,700 110 150 38 4 1 38 Geocon MW-3dup 03/06/95 65 01 21 41 -43 60 1,900 --- 140 37 4 0 37 Geocon Mw-3 03/08/95 64 91 21 41 -43 50 --- - - --- --- --- --- Geocon MW-3 05/02/95 64 08 21 41 -42 67 --- --- --- --- --- --- Geocon Mw-3 05/05/95 --- 21 41 --- 650 <50 400 6 0 2 9 9 0 Geocon MW-4 05/02/95 64 20 21 63 -42 57 130 <50 <0 5 0 6 <0 5 <0 5 Geocon see notes on page 2