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TABLE 3 SUMMARY OF HISTORICAL GROUNDWATER GAUGING AND LABORATORY ANALYTICAL DATA Former Tosco Bulk Terminal No.10013 3505 Navy Drive,Stockton,CA Approadmate ..._. .. - _.... e'• 4';. - �3 s , -. TOC .Constructed Depth to Orouhd atcr TP11 D (p6/ ) -Benzene.. Toluene Ethylbevcne Total Xyjehe9 MTBE DIPS(N1 -) 1r CSE �TAME. TBjt Methanol -EtHririol�- TYA C L Well Elevation - Total Well Groundwater +Elevation (µp/1,) fpF/L) ..(µBn-) W�)..;, .WgIL) Sample Date - Number (feet above Depth (feet below (feet above ..MSL) ..(feet below.., TOC): MsL) ... .. T� EPA Melhod I3015M 's EPA Method$260)#•�- ., ,._., _._.... ... ., ,...� .. ..._ _. .:. ___ 0.41 75 <.100 '-2511 MW-1 09/08/11 8.00 25 10.11 -2.11 -- <50 --- E<D, --- MW-I 12/06/11 8.00 25 10.11 -2.11 --- '"" -- <0.50 --- --- UO <I00 <250 MW-I 03/06/12 800 25 9.88 -1.88 <50 <50 <0.50 <0.50 <1,0MW-2 08/17/87 2.64 25 10.57 -7.93 ND<1000 ND<50 ND<0.50 -- ND<0.50 --- -- - -- -- -- --- MW-2 02/02/88 2.64 25 --- 1 150 ND<0.50 ND<0.50 ND<0.50 2.6 -- --- -- -- -- --- --- MW-2 03/08/88 2.64 25 10.67 -8.03 -- -- --- -- --' --- - --- -- MW-2 04/14/88 2.64 25 10.83 -8.19 - -"" -- - -� - --- --- MW-2 06/01/88 1 2.64 25 1045 -7.81 --- 490 l5 3 2.5 4.3 -- --- - - -- --- -"_ MW'-2 02/89 2.64 25 --- -- 150 9.5 ND<0.50 ND<0.50 ND<0.50 -- -- - -- --- -- '" MW-2 09/18/92 2.64 25 11,81 -9.17 81 370 34 3.1 ND<0.50 5.2 -- --- --- --- -"" ""- --- MW-2 12/11/92 2.64 25 11.54 -8.90 ND<50 71 4.8 0.5 ND<0.50 ND<0.50 - -- -- --- - -- -- MW-2 03/01/93 2.64 25 8.79 -6.15 140 840 110 2.8 ND<0.50 23 --- --- --- --- --- --- --- MW-2 06/04/93 2.64 25 9.64 -7.00 1,100 270 110 3.7 ND<0.50 17 --- -- --- -- -- -- ""' MW-2 09/28/93 2.64 25 1 11.23 1 -8.59 1 2,100 1.800 200 34 ND<0.50 28 -- --- - --- --- --' --- MW-2 1 12/02/93 2.64 25 11.28 1 -8.64 1 2,100 530 86 7.5 ND<0.50 8.8 -- - -- -- -- - '- ftMW-2 03/04/94 2.64 25 10.03 -7.39 860 280 140 5.8 ND<0.50 14 -- -- -- -- - - -- 06/03/94 2.64 25 10.57 -7.93 500 440 160 3.8 ND<0.50 14 -- -- -- - -- -09/28/94 2.64 25 11.20 -8.56 470 340 120 2.7 ND<0.50 48 12/02/94 264 25 10.70 -806 1,200 160 51 1 ND<0.50 4 03/31/95 2.64 25 8.09 -5.45 800 320 14o 3.3 1.4 12 -- -- --- -- --- ---06/02/95 2.64 25 9.67 -7.03 510 76 28 0.55 ND10.50 1.5 --- - --- -- --- -- --- MW-2 1 11/01/95 2.64 25 11.99 -9.35 240 220 1 ND<0.50 ND<0.50 19 5.8 ND<5.0 --- - -- --- --- --- QC-I(c) 11/01/95 2.64 25 --- -- 200 ND<0.50 ND<0.50 1.5 4.8 ND<5.0 --- --- -- --- - --- MW-2 02/14/96 2.64 25 8.65 -6.01 - d 1,600 430 6.8 2.4 27.1 9900 --- --- -- --- --- --- MW-2 05/14/96 2.64 25 9.32 -6.68 720 4,100 120 ND<5 ND<5 8 6300 --- --- -- - -- --- MW-2 09/10/96 2-64 25 9.90 -7.26 140 440 62 1.7 ND<I.0 8.4 3200 --- - -- -- - --- MW-2 11/21/96 2.64 25 1 12.61 -9-97 100 9,800 120 5.9 ND<5.0 5.5 28000 -- -- - - -- --- QC-1(c) 11/21/96 2.64 25 --- --- --- 23,000 140 ND<25 ND<25 ND<25 31000 --- - --- --- -- --- N[W-2 04/16/97 2-64 25 8.68 -6.04 260 1 8,100- 89 ND<5.0 ND<5.0 ND<5.0 17000 -- -- --- --- --- --- QC-I(c) 04/16/97 2.64 25 --- --- I --- 1 8,500 91 UND<500 ND<5.0 ND<5.0 - 16000 --- - --- -- -- -" MW-2 08/06/97 2.64 25 10.10 -7.46 --- --- -- --- --- MW-2 08/07/97 2.64 25 --- ND<100 ND<500 47ND<10 51 9200 -- --- -- -'- -- -- MW-2 01/23/98 2.64 25 8.33 -5.69 2,400 57,000 140 ND<5.0 5.6 50000 -- -- --- -- --- --- M5V-2 07/10/98 2.64 25 8.65 -6.01 610 B 200 180 ND<5.0 7.7 69000 -- - -- -- - - -- QC-I(c) 07/10/98 2.64 25 -- --- --- 7,900 ND<250 ND<500 ND<500 68000 -- - - - MW-2 09/17/98 2.64 25 9.91 -7.27 690 73,000 200ND<5.0 9.1 86000QC-I(c) 09/17/98 2.64 25 -- --- --- 90,000 45ND<1,0 1.3 100000 -- -- - MW-2 12/30/98 264 25 9.91 -727 440 20,000 22 ND<5.0 ND<5.0 ND<5.() 20000/Z2000 i --- -- -- -- - -- MW-2 02/16/99 2.64 25 9.02 -6.38 550 18,000 30 ND<5.0 ND<5.0 ND<5.0 23000 --- --- ""' --- MW-2 06/30/99 2.64 25 9.63 -699 ND<I00 ND<25000 38 ND<10 I ND<I.0 ND<1.0 19000 -- -- --- --- --- --- Page 5 of 33 ATC Protco No 075 75119 0888