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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 - '�'+pI!roximate TOC . �Corisiructed bepth to Crtoundw•ster TP _ \Nell Elevation TotalWell,- Ground ester £imation (� MTBE P -) ETBE TAME TBA 'Iwiethaziol Ethanol Numbcr Simple Date _ n r Y�eAr- Depth:- I, .... _.MSL3 (feet below TOC') . ' MSL) - TOC) EPA s `EPA Me(od 8260B mw-15 05!29/07 0 83 ''5 i - 3.67 -2.84 - r-- ..-,._ ,.• Mw-Is oa27ro7 0.83 - - - 4.20 3.37 - - M7W-15 11110/07 0.83 25 q pp - - - - - - ND<I0,000 ND<250 MW 15 03/19/08 083 25 2.86 -2.03 ND<50 ND<50 ND10.50 ND<0.50 /01X0.50 ND<1.0 1 - - MW-IS 052008 0.83 25 3.4q ND<0.50 ND<0.50 ND<0.50- ND<10 ND<IO ND<250 MW-15 0828/08 0.83 -2.61 - -- - - - 25 3.85 -3.02 '- --- - - -- MW-15 11/06/08 0.83 25 3.53 - - - - - - - - - -- ND<IO ND<250 2.70 - _ _ _ MW-IS 02/09/09 0.83 25 2.95 212 MX50 ND<50 1VDm.50 ND�.50 /01X0.50 NDc1.0 /01X0.50 --- _2 - - - - MW-IS 05/01/09 0.83 25 2.98 - --- ND<I00 NDQ50 M1-fW-IS 08/31/09 0.49 -215 - 25 3.45 _2.96 ND<50 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<I.0 Z - MW-IS 11/12/09 0.49 25 3.14 - -- ND<IO NDQ 00 ND--250 MW-15 02/03/10 0.49 -2.65 -- - - - - - 25 2.10 -1.61 ND<50 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<L0 ND<0.50 --- -- --- -- - M-- 05/06/10 0.49 25 2.15 --- - - ND<lo 1,700 ND<250 MW-15 08/30/10 0.49 -1.66 - �- - - 25 3-39 -2.90 100 /01X50 R-D<D 5 ND<0.50 NiX0.50 IYDc1.0 /01X0.50 -- -- --- --- --- MW-IS 12/03/10 0.49 25 2.97 '- - - NIXIO ND<I00 ND<250 MSV-IS 02/18/11 0.49 -2.48 - _ - - - 25 1.74 -125 <50 c50 x.50 <p.50 <p.50 <1.0 -- --- --- --- -- --- MW-15 05/I1/11 0.49 25 2.20 -' -- --- --- <10 <I00 <50 1.71 - - - -- - 1 MW-15 09/07/II 0.49 25 3.25 -2.76 - - --- --- <10 __ ___ MW-IS 12/06/11 0.49 25 1,26 ---_ -� - - --- <100 Q50 -Z.7J - _ - -- - MW-IS 03/06/12 0.49 25 288 2.39 - <0.50 - - - <50 <50 <0.50 <0.50 <0.50 <I.0 0.77 - --- -- <10 <100 Q50 MW-16 05!30103 2.40 23 5.45 -3.05 670(r) /01X50 NDm.50 - N1X0.50 ND<0.50 ND MW-I6 08/13813 2.40 23 6.32 /01X0.50 /01X0.50 IIO ND<100 -3.92 560(r) /01X50 /01X0.50 NI)W.50 ND<0.50 /01X0.50 ND<0.50 28 ND<0.50 ND<0.50 130 MW-16 12/22/03 2.40 23 5.99 - _- ND<I000 MW-16 02/IOro4 2.40 -3.59 360(r) ND<50 ND<0.50 ND<0.50 NIX0.50 174 050 ND<"o 17 ND<0.50 ND<0.50 43 4.54 2.14 120(r) ND<50 NDc0.50 ND<0.50 ND<0.50 ND<I0 ND<I000 MW-16 0520/04 2.40 23 5.55 1 39 /01X0.50 ND<0.50 16 ND<50 ND<5.0 MW-16 08/16/04 2.40 -3.15 -- - - - - 23 6.30 -3.90 400 41 ND<0.50 NDm.50 - - MW-16 1129/04 240 23 580 /01X0.50 ND<0.5o - 21 ND<0.50 ND<0.50 130 ND<50 ND<5 0 MW_t6 -3.40 -- -- - - - munro5 zao 23 3.1a - -- - - MW-16 05/12/05 240 -0.74 82(r) 60 ND<0S0 ND<0.50 ND<0.50 ND<I.0 _ 22 - --- --- --- 23 4.37 -197 _ _ _ - - 180 ND<500 ND<50 MtV-16 08/30/05 2.40 23 600 - - _ - - MW-16 11110ro5 2.40 -3.60 41 NIX50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 22 - -- _-_ 23 6.45 4.05 - - 180 ND<500 ND<50 MW-16 02/02/06 2.40 23 3.78 --_ -- -- - - -- --- - _ MW-16 05/30/06 -1.3,8 54 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<I.0 6 - -- -- -- 2.40 23 4.04 -1.64 _ _ _ - - 7 ND<10,000 ND<100 MW-16 08/31/06 2.40 23 5.34 _2.94 78 ND<50 ND<0.50 ND<0.50 _ND<0.50 - MW-I6 II/t6ro6 2.40 23 5.62 ND<1.0 -- 19 - 130 MX10,000 ND<250 biW-16 0226/07 -3.22 -- -- _ --- -- 240 23 4.93 -2.53 ND<50 NIX50 ND<0.50 ND<0.50 ND<0.50 1YD<I.0 -- - MW-16 0529/07 2.40 23 5.62 --- 13 - 22 /01X50 ND<250 MW-16 0827/07 2.40 -3.22 - -_ --- -- - - 23 6.18 -3.78 1ViX50 NIX50 1`ID<0.50 ND<0.50 ND<0.50 /01X1.0 - MW-16 11/30/07 2 40 23 6 11 --- 18 -- - 140 ND<f 0,000 ND<250 �V,V-16 03:19/08 2 40 -3 JI --- ___ - -_ -- '-3 4.61 -2.21 ND<50 ND<50 ND<0.50 ND<0.50 MX0.50 ND<I.0 --- -- --_ --_ --- -- N - --- 6 12 ND�0 50 ND<0.50 42 ND<10 ND--250 l agc 2n of; \I( I'ngrq No 117<11119 I'M