ARCHIVED REPORTS_FIRST QUARTER 2012 STATUS SUMMARY REPORT

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TABLES SUMMARY OF HISTORICAL GROUNDWATER GAUGING AND LABORATORY ANALYTICAL DATA Former Tosco Bulk Terminal No.10013 3505 Navy Drive-Stockton,CA l . Approximate yHTotlXylmeslDB'E(pF/L)eerucne Toluene Eth IbenzoMTBE 7;! AME TBA Mehanol ETOC Constmcted Depth to Gmundwaler TPH-D PH-G(pg8.)Sempl Dm, Cl,mioa Tom]Well G oandwater Ele+abn (pg/L) (p5/L) (P6ti) (per) (po./L) p�L) (µg8-) Numher (teel above Depth (feetbelow (f ctabove hI5L) (feetbelow TOC) EPA Method 8015M EPAMethod 8260B TOC) <1 0 54 MW-19C OJI B/11 10,60 70 13.14 -254 150 65 x0.50 x050 - MW-19C OS/11/11 10.60 70 1329 MW-19(7, 09/08/11 1060 70 14.37 -377 x50 19 <050 - MW-19C 12/06/11 1060 70 14.33 1 -3.73 MW-19C 03/05/12 10.60 70 13.92 -3.32 60 x50 x0.50 <0 S0 c0.50 <IO c0.50 -- ND<1000 MW-20 12122/03 2.58 29 6.26 -368 I80(r) ND<50 ND<0.50 N 5 ND<0.50 Nl)<0.50 1 0.42(s,u) ND<D30(I) NDm.50(Q 3](ts) ND<50 NDG5.0 MW-20 02/10/04 2.58 29 5.05 -247 94(r) NIXSD 0.34("" 065([) 0.35(1) 14(I) - MW-20 0520/04 2.58 29 6.15 -357 280 20 ND<0.50 ND<0.50 ND<0.50 NDm.50 1 MW-20 08/16104 2.58 29 6.67 4.29 1,I0D NDQD ND<0.50 ND�.50 ND<0.50 ND<0.50 I 1 ND<O SD NON.50 ND<5.0 ND<50 ND<50 MW-20 1129/04 2.58 29 624 -366 200 NDCO ND<0.50 ND<0.50 ND<0.50 ND<O.SD 20(u) 0$u) ND<O50 ND<O.SDI]S0 ND<500 ND<50 MW-20 02/17/05 2.58 29 5.70 -3.12 N1><50 ND<50 NDN.50 ND�.50 ND<0.50 ND<10 5 MW-20 05/17/05 2.58 29 496 -2.38 100 28h ND<O.SO ND<D.50 ND<0.50 ND<IO 4 I NDx0.50 ND<050 10 MW-20 08/30N5 .56 2 29 6.47 -3.89 38 ND60 ND<0.50 NDN.50 ND<0.50 NIXIO 3 I ND<D.SD ND<0.5D 8 ND<500 ND<50 MW-20 11/30/05 2.58 - 6.6] -0.29 ND150 ND<50 ND<030 ND<0.50 ND<0.50 ND<IO 11 2 ND<0.50 ND<0.50 2 MW-20 0^J02/06 2.58 29 4.30 -172 ND60 Nl<m ND MW-20 05!30/06 2.58 29 470 -212 ND60 M 50 ND<0.50 ND<0.50 ND�.50 ND<10 9 I ND<D 50 NDm.50 19 ND<10,000 NDQ50 MW-20 08/31/06 2.58 29 6.25 -3.67 110 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<L0 5 - MW_20 11/16/06 2.58 29 6.20 -3.62 110 ND<50 ND<0.50 N13<0 50 ND<0.50 ND<10 6 1 ND<050 ND�.50 10 MW-20 02126/0] 2.56 29 5.43 -2.85 NIXED ND<50 NDm.50 ND<0.50 NDW.50 ND<10 IS I ND<0.50 ND<0-50 11 120 NDQ50 MW-20 05/29/07 2.58 29 6.10 -3.52 ND<50 ND�ND6O NDm.50 NDm50 ND<0.50 ND<IO 15 I ND<0�50 PID<OSO 20 ND<10,000 NDQ50 MW_20 08/2]/07 258 29 661 -0.03 -- NDQ50 MW-20 11/30/0] 2.58 29 6.55 -3.9] 110 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<IO 9 1 ND<0.50 NDm.50 20 MW-20 03/19/08 2.58 295.11 -253 ND<SD ND<50 NDm.50 NDN.50 ND<0.50 ND<IO 12 I ND<0.50 NDN.50 ND<IO ND<IO NDQ50 MW-20 05/21/08 2.58 29 598 -1 m 52 ND<50 NDeZ.50 ox m.50 NI ,5D ND<10 13 1 MX0.50 NDm.50 ND<!0 MW-20 05/28108 258 29 6.60 -0.02 ND<SD NDO ND<0.50 N"50 ND 0.50 ND<IO 12 1 ND<0.50 ND<0.50 60 ND<1D NDC$D MW-20 11/09/08 2.58 29 6.12 -354 5] ND150 ND<0.50 M 0.50 N"50 ND<10 II 1 ND<0.50 ND<0.50 12 MW-20 00/09 2.56 29 5.52 -294 N1XSD 55 ND<0.50 ND<0.50 ND<0.50 ND<IO ] I ND<050 N�50 12 ND<100 ND<250 MW-20 OS/0]/09 2.58 29 5.38 -2.80 9] ND<50 ND<0.50 ND<o.50 ND<0.50 ND<Lp 10 2 ND<0�50 ND<0.50 ND<I00 NDQ50 MW-20 08/31/09 2.32 29 6.22 -390 6G ND<50 ND<0.50 Nl) .,5 ND<0.50 ND<10 5 - MW-20 11111 U9 2.32 29 5.9b -364 52 ND60 NDm.50 ND<0.50 ND<0.50 Nl)<IO 3 1 Np<p,50 ND�SO ND<IO ND<I00 NDQ50 MW-20 02/03/10 29 4.]3 -?41 ND<SD ND<$D ND<O.SD NO<0.50 2.32 ND<1D ND<10 2 1 Np<o.50 ND<O.SD NiX10 NMt00 MW-20 05/06/10 2.32 29 4.80 -2.48 ND<50 ND<50 NDN.50 NDm.50 ND<ID NIXIO 2 MW-20 08/30/10 2.32 29 622 -J90 71 ND<50 N"50 ND�.SO ND<0.50 ND<10 ND<D.SD 1 ND<050 NDm.50 ND3<SI0 ND<100 NDQ50 MW-20 12/03/10 232 29 5.74 -3.42 130 NDG50 ND<0,50 ND <0.50 ND<O.SD ND<IO 2 I x0.50 x0.50 28 x100 Q50 <0 So x0.50 m.50 x1.0 2 MW-20 02/18/11 232 29 46] -2.35 1� 60 x050 x050 @50 <IO 2 1 x0.50 x050 ]2 - - MW-20 05/11/11 232 1 29 1 4.86 -2.54 310 �0 <IO 19 1.1 0.32 x0.50 39 x100 QSO MW-20 09/0]/11 239 29 6.02 -3.6J 130 18 x0.50 x0,50 x0.50 <IO 1.8 1.5 x.50 cp.50 58 - Q50 MW-20 12/06/11 2.39 29 6.16 -377 6o x50 x0.50 x.50 IC50 1100 Q50 MW-20 03/05/12 1 239 1 29 1 5.68 1 -319 530 <50 <0.50 U.50 x0.50 <1O I8 x0.50 0.52 x0.50 93 ATC Pmject No.075.75118 0888 Pa6e 30 of33