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Pro No S8100-06-18 � � ` r June 21, 1995 TABLE III (continued) SUMMARY OF GROUNDWATER ELEVATION AND ANALYTICAL DATA CALTRANS SHOP 10 1603 SOUTH B STREET, STOCKTON, CA (PAGE 2 OF 3) TOC Depth to Groundwater' Ethyl- Total Well Elevation Groundwater Elevation TPH9 TPHd Benzene Toluene benzene Xylenes Sampled by Number Date (MSL) (feet) (MSL) (mg/L) (mg/L) (ug/L) (ug/L) (ug/L) (ug/L) MW-8 05/11/90 100 36 59 89 40 47 1 9 --- 200 5 1 0 7 22 WCC MW-8 05/17/91 100 36 64 74 35 62 <O 5 -- <0 3 <0 3 <0 3 <0 3 WCC MW-8 07/05/91 100 36 65 22 35 14 --- --- --- --- --- --- WCC MW-8 04/07/92 21 35 65 56 -44 21 <30 <50 <0 3 0 57 <0 3 <0 3 ALTON MW-8* 05/24/94 21 35 65 18 -43 83 --- --- --- --- --- --- NM MW-9 05/10/90 100 87 60 42 40 45 3 4 --- 60 a 0 <0 5 170 WCC MW-9 05/17/91 100 87 65 34 35 53 2 1 - - 310 10 1 7 32 WCC MW-9 07/05/91 100 87 65 83 35 04 --- - - --- --- --- --- WCC MW-9 04/07/92 21 88 DRY --- --- --- --- --- --- --- ALTON MW-9 05/24/94 21 88 65 84 -43 96 --- --- --- --- --- --- NM MW-10 04/07/92 21 87 66 26 -44 39 5 6 1 8 920 460 38 520 ALTON MW-10 10/22/93 21 87 67 18 -45 31 8 0 --- 1,300 1,000 190 700 EA MW-10* 05/27/94 21 87 65 94 -44 07 2 57 ND 13,000 3,400 22 9 2,800 NM MW-11 04/07/92 21 37 65 94 -44 57 0 42 <50 33 0 68 0 37 0 64 ALTON MW-11 10/22/93 21 37 67 92 -46 55 0 15 --- 4 2 2 2 NO 1 1 EA MW-11 05/27/94 21 37 65 63 -44 26 ND ND 6 58 1 89 NO ND NM MW-12 04/07/92 21 23 65 86 -44 63 <30 <50 <0 3 <0 3 <0 3 <0 3 ALTON MW-12 10/22/93 21 23 67 74 -46 51 ND --- 0 6 1 7 ND 1 1 EA MW-12 05/27/94 21 23 65 63 -44 26 ND ND 1 37 0 69 ND ND NM MW-13 10/22/93 20 94 67 12 -46 18 1 0 --- 1,300 1,000 190 700 EA MW-13 05/26/94 20 94 64 79 -43 85 NO ND NO 2 54 ND ND NM MW-14 10/22/93 21 95 67 92 -45 97 NO --- ND 1 4 ND ND €A MW-14 05/26/94 21 95 65 60 -43 65 0 52 ND 58 7 5 96 ND 1 73 NM MW-16 10/22/93 22 12 67 92 -45 80 ND -- ND ND ND 0 6 EA MW-16 05/25/94 22 12 65 58 -43 46 ND ND ND ND ND ND NM MW-19 10/22/93 21 79 67 94 -46 15 ND --- ND ND ND ND EA MW-19 05/26/94 21 79 65 50 -43 71 ND ND ND 2 27 ND ND NM MW-20 10/22/93 22 12 67 92 -45 80 ND --- ND ND ND ND EA i MW-20 05/24/94 22 12 65 50 -43 38 ND ND ND NO ND ND NM I See notes on page 3