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TABLE 2 SUMMARY OF HISTORICAL GROUNDWATER GAUGING AND LABORATORY ANALYTICAL DATA Circle K Store No. 06671 8606 Thornton Road, Stockton, California TOC Approximate ConarmcledTp I Depth to Groundwater TPH-G Demi Toluene Ethylbenzene Tela) Xylenes MTBE TAIL.. TDA . DIPE ME Ethanol EDC,(µpfL) EDB Well Smnple Dat EI 'r Total Well Depth E8 non Groundwater Elevation Thickness (PPJL) hat/L) (µyL) (ygl.) (µ4/L) (µ8/L) (µ4/L) (µ&/L) (VINE) (V4/L) (PPJLl (µpp.) Number (feetabove (feel below (feet above (I lbelow (Ret above (Ret) MSL). TOC) MSL) TOC) MSL) . - EPA Method 82609 MN'-] 2/2/2010 Ia.W 45 35. 19 -20.85 0.00 130 ND<0.50 ND<0.50 ND<O 50 ND MW-7 7/12010 14,34 45 33.24 -18.90 0.00 Ito ND<O.50 ND<0OD ND<050 ND<1 .0 160 0.86 ND<10 ND<0.50 ND<0.50 ND<o.50 ND<050 hD<250 MW-7 1/20'2011 14.34 45 32.38 -1854 0.00 100 ND<0ED ND<0.50 ND<0.50 ND<LD 240 1.2 ND<10 ND<o:50 ND<0.50 ND<O.50 ND<050 ND<50 M\4-] J/ 15/2011 14.34 45 30.69 -16.35 0.00 130 ND<0.50 ND<0.50 ND<0.50 ND<L0 160 ND<0.50 ND<10 ND<0.50 ND<.50 ND<0.50 ND<D.50 ND<25o MW-9 12/10/2003 13. 18 111 - 0.00 ND<50 ND<05D ND<0.50 ND<0.50 1 .5 IlD<2.0 ND<2.0 ND<IO0 ND<20 ND<20 ND<2.0 ND<2.0 ND<500 MW-8 2/12/2004 13.18 111 34.90 -21.]2 000 ND<50 ND<050 ND<0,50 ND<0.5o ND<I.0 ND<.0 ND<2.0 ND<I00 ND<2.0 NDQO ND<2.O ND<.0 ND<SOD MW-8 5114/2004 13.18 111 34.Oi -20.87 0.00 ND<50 0.96 4.D 0.68 3.4 0.57 ND<050 NDc5.0 Ntaeln ND<0.50 NO<0.50 ND<0,50 ND<50 MW-8 8/4/2004 13.18 111 36.99 -23.81 0.00 ND<50 ND<0.50 ND<0.50 ND<p.$p ND<I.0 ND<0.50 NDcp,iO ND<S.D ND<I.0 ND<o.50 ND<0.50 ND<D.$Q ND<i0 MW4 11/23/2004 13.18 111 37.05 -2387 0.00 ND<50 ND<0.50 ND<0.50 ND<0.50 ND<1.0 ND<0.50 -X,3<0` D<0NDG$,D ND<I.0 ND<050 ND<0.50 ND<050 ND<50 MW-B 11262005 13.18 Ill 34.40 -21.22 0.00 ND<50 ND<0.50 0.94 ND<0.50 1.2 ND<050 ND<0.50 ND<50 ND<0.50 N 0,50 ND<0.So ND<0,5o 2100 MW-B 4118/2005 13.18 111 31.]3 -18.55 0.00 ND<50 ND<p50 ND<0.50 ND<O50 ND<IO ND<O50 7D<050 ND<5,0 ND<O.SG ND<050 ND<050 ND<0.50 ND'e5o MW-8 8/2312005 13, 18 111 3489 -21.]1 0.00 ND<50 ND<0.50 ND<0.50 ND<O50 ND MW-8 10/14/2005 13. 18 III 3620 -23.02 0.00 NO<50 ND<O50 ND<0.50 ND<0.50 ND<1 ,0 ND<0.50 ND<0.50 ND<5.0 NDc0:50 ND<0.50 ND<0.50 ND<0.50 ND<50 MW-8 1/18/2006 13, 18 III 33.05 -19.87 0,00 ND<50 ND<0.50 ND<0.5p ND<0.50 ND<1.0 ND<o.5o NTa<0.50 ND<50 IJD<1 ,0 NDc0.50 ND<050 ND<050 ND<100 MWS 1 4/132006 13, 18 III 1 29.90 -16.72 DOD ND<50 Nl)<.50 ND<0.50 ND<0,50 ND<1.0 ND<0.50 ND<0.50 1 ND<1O ND<050 I ND<0.50 ND<.50 ND<0.50 ND<IOOO MW-S 7/11/2006 13. 18 111 30.54 -17.36 000 ND<5D ND<0.50 ND<0.50 TF<0 ND<1.0 ND<O50 ND<O.50 ND<10 ND<0.50 ND<D50 ND<0,50 11D<0.50 ND<IOOO MW-8 10/30/2006 13, 19 111 33.62 -20.44 0,00 ND<50 NDz0.50 Np<0.50 ND<0.50 ND<1.0 ND<0.50 ND<O50 ND<10 ND<050 ND<D.50 ND<0.50 ND<O50 ND<1000 MW-8 228/200] 13. 18 III 30.95 -17.77 0.00 310 ND<0.50 ND<0.50 ND<0.50 ND<I.0 500 1.5 ND<lo ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<1000 MW-S p/26/2007 13. 13 III 30.86 -17.fi8 0.00 120 2.2 28 5.7 30ND<0.50 N770.50 ND<I0 ITII 1%JD<050 ND<0.50 N 050 ND<50 MW-S 8/9/2007 13, 13 111 33.92 -20.74 0.00 ND<i0 ND<0.50 ND<O.SO ND<O50 ND<0.50 NDc0:50 ND<0.50 30 ND<0.50 ND<0.50 ND<O.SO NTXO.50 ND<50 MW-8 10/252007 13. 13 111 35, 19 32.01 0.00 NDGD ND<0:50 ND<O.So ND<O.SO ND<0.50 NDc050 ND<0.50 Npc10 ND<050 ND <p.50 ND<O.SD NO<0.50 NDQ$p 'WW_9123/2008 13.18 III 33, 19 -2001 0.00 NDtiO ND<O.So ND<0.50 ND<0.50 ND<1:0 ND<0,50 ND<0.50 ND<]0 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<50 MW-B 5/19/2008 13. 18 III 32,04 -18,86 000 Np<50 ND<0.50 ND<0.50 <0 50 ND<].0 NDc0.50 ND<0.50 ND<IO ND<0.50 <0 So ND<0.50 <0 So ND<250 MW-S 7/10/2008 13.18 III 33:81 -20.63 0.00 ND<50 ND<0 SO ND<O50 ND<0.50 ND<1.0 NDc0.50 ND<0.50 ND<10 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<50 MW,e1113/2008 13.18 ill 35,77 42.59 0.00 ND<50 ND<0.50 ND<O.5D ND<0.50 ND<IA ND<050 ND<O.50 ND<10 ND<0.50 ND<O.50 ND<O.50 1 ND<0.50 N7250 MW-8 2112/2009 13.18 111 34.35 -21.17 0.00 ND<50 ND<0.50 ND<050 Nl)<.50 ND<I.0 ND<0.50 ND<0.50 hili ND<0450 ND<O.50 ND<0.50 ND<0.50 ND<50 MW-8 4/14/2009 13.18 111 32.94 -19.76 0.00 ND<5p NDN.50 ND<0.50 ND<0.50 ND<Lp ND<0.50 NDc0.50 ND<40 ND<O.SO ND<0.50 NDc0.50 ND<05D NO<50 MW-8 7/152009 13.18 111 34.03 -20.35 0.00 ND<50 ND<050 ND<0.50 ND<p.50 ND<I.0 ND<0.50 ND<0.50 ND<10 ND<p.50 ND<0.50 ND<O.So ND<0.50 ND<250 ' M\V-8 10/2/2009 13.18 111 35.84 -22.6fi 0.00 MW-8 22/2010 13.18 111 33 ]2 -20.54 0.00 -- .VIW-9 7/1/2010 13.18 111 31.]3 -18.55 0.00 ND<$p ND<050 ND<O50 1,1D<050 ND<I.0 ND<0.50 ND<0.50 ND<10 ND10.50 3,113<0.50 ND<0.50 1%lD<050 ND<250 \IAV'-e I/±0/2011 13.18 111 11 .47 -1829 0.00 ND<50 ND<0.50 NDc0,50 ND<0.50 ND<I.0 NDc0.50 ND<0.50 ND<10 ND<0.5o ND<O.50 ND<050 ND<0.50 N'D<25O \4'-8 7'I5;2011 11. 18. III 29. 19 -16.01 0,00 ND<50 ND<.50 N. <0.50 ND<O 50 ND MW19 12/10'3003NW38442 05 .- ODD ND<50 ND<0�50 ND<M0 ND<050 ND<l .0 NDQ.O ND<.p ND<100 NO<L.0 - NO<2.0 - NDQ.O ND<500 MW-9 2; 132004DS 36.30 -2253 0.00 ND<50 ND<O 50 ND<0.50 ND<0.50 ND<I.0 ND<.p ND<.0 ND<l0O Np<2,0 ND<2.0 ND<.0 ND<2.0 ND<S00 MW-9 5/14/2006 05 3542 -21 . 15 0.00 ND<50 ND<o.50 ND<0.5( ND<0,50 ND<1:0 ND<0.50 ND<0.50 ND<5.0 ND<1.0 ND<0.50 NO<0.50 ND<0.50 ND<Sp MW-9 8/420045 33,45 -24, 13 000 ND<50 ND<0.50 ND<0.50. ND<0,50 ND<l.o ND<050 ND<O50 ND<5.0 Mein ND<0.50 ND<0.50 ND<0.50 NEI MW-9 1123/20045 38,42 -24. 15 0.00 ND<SO ND<0.50 ND<050 ND<050 ND<1.0 ND<0,so 1D 0.50 ND<5.0 ND<l0 ND<0.50 ND<0.50 NDc050 MW-9 1/26/200505 3565 -2138 0.00 ND<50 ND<0.50 0.62 ND<0.50 ND<1.0 ND<030 ND<0.50 ND<5.0 ND<0.50 ND<O50MW-9 4118/2D0505 33.00 -18.]3 0.00 ND<50 ND<p50 ND<0.50 ND<O.SO ND<I.0 ND<0.50 Np<O50MW-9 8/23/200505 36.43 -22.16 0.00 ND<50 ND<0.50 ND<0.50 ND<o.SO NDc1 .0 ND<0.50 ND<0.50 NDGID NOc0.50 ND<0.50 ND<o.5p ND<0.50 ND<1000 8671 Historical GW Table PQ 20 11) Pafi Page Ba 0 ATC Proj¢t N6. 075.751183781