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Pro No 58100-06-18 0 June 21, 1995 r TABLE III SUMMARY OF GROUNDWATER ELEVATION AND ANALYTICAL DATA CALTRANS SHOP 10 1603 SOUTH B STREET, STOCKTON, CA PAGE 1 OF 3 TOC Depth to Groundwater' Ethyl- Total WeLL Elevation Groundwater Elevation TPNg TPHd Benzene Toluene benzene Xylenes Sampled by Number Date (MSL) (feet) (MSL) OWL) (mg/L) (ug/L) (ug/L) (ug/L) (ug/L) MW-1 1987 --- --- --- 154 NA 14,700 25,300 2,500 9,800 WCC MW-1 05/17/91 --- --- --- --- NA --- --- --- --- WCC MW-1 07/05/91 --- --- --- --- NA --- --- --- --- WCC MW-1 04/07/92 21 64 DRY - --- --- --- --- --- --- ALTON MW-1* 05/24/94 21 64 DRY --- --- --- --- --- --- --- NM MW-2 1987 _-- --- --- 210 NA 19,900 38,800 4,000 15,900 WCC MW-2 05/17/91 DRY NA WCC MW-2 07/05/91 --- DRY --- --- NA --- --- - - --- WCC MW-2 04/07/92 21 51 DRY --- --- - - --- --- --- --- ALTON MW-2* 05/24/94 21 51 DRY --- --- --- --- --- --- --- NM MW-3 1987 --- --- --- 231 NA 25,700 36,700 2,700 12,300 WCC MW-3 05/17/91 --- DRY --- --- NA --- --- --- --- WCC MW-3 07/05/91 --- DRY --- --- NA --- --- --- --- WCC MW-3 04/07/92 21 56 DRY --- --- --- --- --- --- --- ALTON MW-3* 05/24/94 21 56 DRY --- --- --- --- --- --- --- NM MW-4 1987 --- --- --- 174 NA 21,200 26,100 1,300 10,600 WCC MW-4 05/17/91 --- DRY --- --- NA --- --- --- --- WCC MW-4 07/05/91 --- DRY --- --- NA --- --- --- --- WCC MW-4 04/07/92 21 13 DRY --- --- --- --- --- --- --- ALTON MW-4* 05/24/94 21 13 DRY --- --- --- --- --- --- --- NM MW-5 05/10/90 100 55 57 95 42 60 <0 05 NA <0 5 <0 5 <0 5 <0 5 WCC MW-5 05/17/91 100 55 DRY --- --- NA --- --- --- --- WCC MW-5 07/05/91 100 55 DRY - --- NA --- --- --- --- WCC MW-5 04/07/92 21 57 DRY --- --- --- --- --- --- --- ALTON MW-5* 05/24/94 21 57 DRY --- --- --- --- --- --- --- NM MW-6 05/10/90 99 71 57 95 42 60 <0 05 NA <0 5 <0 5 <0 5 <0 5 MW-6 07/05/91 99 71 DRY DRY --- NA --- --- --- --- MW-6 04/07/92 99 71 DRY DRY --- --- --- --- - - MW-6* 05/24/94 20 74 DRY --- --- --- --- --- --- --- NM MW-7 05/04/90 100 00 50 78 40 22 <0 05 NA 1 5 <0 5 <0 5 <0 5 WCC MW-7 05/17/91 100 00 64 50 35 50 <0 05 NA <0 5 <0 5 <0 5 <O 5 WCC MW-7 07/05/91 100 00 64 96 35 04 --- NA --- --- --- --- WCC MW-7 04/07/92 21 03 65 28 -44 25 <0 03 <0 03 <0 3 <0 3 <0 3 <0 37 ALTON MW-7 10/22/93 21 03 67 14 -46 11 ND ND ND ND ND EA MW-7* 05/24/94 21 03 64 90 -43 87 --- --- --- --- --- --- NM See notes on page 3