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TABLE 2 SIINDVIARY OF HISTORICAL GROUNDWATER GAUGING AND LABORATORY ANALYTICAL DATA Circle K Store No, 08671 8606 Thornton Road, Stockton, California TOC App 'e Top f Depth to Groundwater TPHG senwoeve Toluene Efnytbenzene Total Xylenes MTBE TAME TDA DIPE ETRE Ethanol Constructed screen PSR EDC (pg/L) EDB (pgyL) Well EI Gr000dwaler Elevazian (pPJL) (PSL) (pSL) (yg/L) (p8/L) (µp/L) (k41L) (pB0-) (pB/L) (VEL) Sample ➢at Total WUl Pepth h�a Thickness Number (feet vbove (feet below (feel above M$L) (F TOC) (feelubcve TOGO MSL) (feet) TOCJ. MSL) EPA Method 82600 MW-1 L15/1999 12.59 45 -12.41 23. 11 0 106 ND ND ND 3.06 ND ND ND ND MW-I 5/14/1999 12.59 45 -12.41 2698 -14.39 0 ND ND NO ND 22 ND ND ND NDND MW-I 8/17/1999 12.59 45 -12.41 30.38 -1].79 0 1.3 ND ND ND 76 ND ND ND ND - - MW-I 11/1/1999 12.59 45 -12.41 31 .96 -1937 0 ND ND ND ND 190 ND ND ND - MW-I 2/7/2000 12.59 45 -12.41 2946 -16.87 0 1 ND ND ND 530 ND ND ND ND MW-I 5/1/2000 12.59 45 -12.41 26.48 -13.89 0 ND ND ND ND 3570 ND ND ND ND - - MW-I 7/28,'2000 12.59 45 -12.41 31.42 -18.83 0 - ND ND ND ND 1100 ND ND ND ND - - -- 1 MW.I 11/2]/2000 12.59 45 -12.41 30.30 -17.71 0 ND ND ND ND 270 ND ND ND ND J mw� l 1 /31 /2001 12.59 45 -12.41 28.31 -1622 0 ND ND ND ND 839 ND ND ND ND ND ND ND Mw- ; 1 - _ Nol 1259 45 -12,41 28.15 -1556 0. ND ND ND ND 1610 ND ND ND ND ND - ND D Mwd 522/2001 1259 45 -12,41 31.76 -19. 17 0 - ND<a50 ND<0,50 ND<o.5o ND<0.50 510 ND<10 ND<500 ND<10 ND<l0 ND<10 ND<10 ND<5000 li MW- I 11/2N2aal 12.59 45 -12.41 32.27 -19.68 0 - NIX0.50 0.78 ND<0,50 0.92 450 ND<,$ ND<50 ND25 NDQ.S NDQ.S ND<2.5 ND<1200 MW-1 ?/122002 12.59 45 -12.41 29.92 -1733 0 ND<.0 ND<2.0 ND<.0 NDQ.O 1100 NDQO ND<1000 N1 Q0 ND<0 ND<0 ND<20 ND<5000 MW-1 5/612002 12.59 45 -12.41 29.34 -16.75 0 5700 ND<25 ND<25 Nl) .5 ND<25 44W Nl) 5o Nl) 500 ND<50 ND<50 oz) 5o ND<50 ND<12000 MW- I 8/7'2002 12.59 45 -12,41 33.58 '0.99 0 420 ND<1.0 ND<1,0 ND MW 1 11/4/2002 1259 45 2,41 35.80 -23.21 0 ND<50 N13<0.50 ND<0.50 ND<0.50 ND<1.0 140 ND<2.0 ND<100 ND<.0 NDQ.0 ND<0 ND<2.0 ND<500 MW-1 2/3/2003 12.59 45 -12.41 32.72 -20.13 0 NDQ00 ND2.0 ND<2.0 ND<2.0 ND<4.0 450 ND<8.0 ND<400 ND<8.0 ND<8.0 ND<8.0 ND<S.0 ND<2000 MW- 1 5/142003 1259 45 -12.41 30.75 -19.16 0 NDQ50 ND<2.5 ND<J ND<2.5 ND<50 500 ND<10 ND<500 ND<10 ND<10 ND<10 ND<10 M<25(h) N4W-1 3/13/2003 12,59 45 -12.41 35.44 -22.85 0 300 N13<1.0 ND<1.0 ND<1.0 NDQ.O 200 ND<4.0 ND<.00 ND<4.0 ND<4.0 ND<4.0 NDW.O ND<1000 MW-1 11/14/2003 1259 45 -12.41 3].61 -25.02 0 200 ND<050 ND<,50 ND<050 ND<1.0 80 NIX2.0 ND<I00 ND20 ND<2.0 NDQ.p ND<.0 ND<00 MW-1 2/12'2004 .12,59 45 -12.41 3429 -21]0 0 680 ND<5.0 ND<50 ND<5.0 ND< 0 740 NDQO ND<1000 NDQO N'D<0 ND<0 NDQO NDti000 MW-1 5/14/2004 12.59 45 -12.41 3375 -21. 16 0 720 ND<5.0 ND<5.0 ND<5.0 ND<10 990 ND<5.0 ND<50 ND<10 ND<5.0 ND<5.0 ND<5.0 ND<500 MW-I 8/42004 1259 45 -12.41 36.39 -2380 0 ND<500 ND<5.0 ND<5.0 NI)<50 ND<10 610 N3<5.0 NDtio ND<10 ND<5.0 ND<no Nl) 5 () Nl) 5w MW-1 11/23/2004 12.59 45 -1241 37.45 -24.86 0 640 ND<0.50 ND<0 so ND<050 ND<1.0 820 2.0 8.7 ND<1.0 ND<0.50 ND<0.50 ND<0.50 ND<50 MW-1 1/26/2005 12.59 45 -1241 33.80 -21.21 0 ND<500 N )<0,50 ND<0.50 N'D<050 ND<1.0 590 ND<.0 N. < o ND<5.0 ND<5.0 ND<5.0 ND<5.0 ND<Soo MW-I 4/19/2005 12.59 45 -1241 31.13 -18.54 0 ND<50 ND<050 ND<050 ND<050 ND<1.0 860 2.8 ND<25 ND<050 ND<o.50 ND<0.50 ND<050 ND<250 NIw'-1 81�32Oi 712.59 45 -12.41 34.31 -21]2 0 160 ND<0,50 ND<050 ND<p$0 ND<I.0 1000 3.2 30 Nl)Q.50 ND<0.50 ND<0.50 ND<0.50 ND<I000 NIIV-I 10;14/2003 12.59 45 -1241 35.61 -23.02 0 ND<50 l<0 so ND<0.50 ND<050 ND<1,0 120 ND<050 9.1 ND<050 ND<0.50 ND<050 ND<050 ND<50 MW-1 1/18/2006 12.59 45 -12.41 32.50 -19.91 0 2100 ND<10 ND<10 ND<10 M<20 1600 ND<10 470 ND<l.0 ND<10 ND<10 ND<10 ND<000 f MW-1 4/132006 12,59 45 -12.41 29.32 -16.73 0 640 ND<0.50 ND<0.50 ND<0.50 ND<L0 2000 82 ND<10 N0<0.50 ND<0,50 N0<0.50 ND<0.50 ND<1000 ' 9 mw-1 7/1 U2006 12,59 45 -12.41 29.93 1 -17.34 o ND<2500 ND<5 ND<5 ND<25 ND<50 1800 ND<25 ND<500 I ND<25 1 ND<25 ND<25 ND<5 ND<50000 MW-1 10/3012006 1259E45 -1241 33.05 -20.46 0 310 ND<050 ND<0.so N➢<050 ND<1.0 840 30 120 ND<0.50 ND<0.50 ND<050 ND<0.50 ND<1000 MW-1 2/28/2007 12,59 -12.41 -. - _ _ _ _ MW-I 4/261200> 12.59 -12.41 30.28 -1769 0 310 050 7.7 1.7 9.8 420 1.6 ND<10 ND<0.50 ND<0.50 ND<0.50 ND<0.50 ND<250 MW-1 8/92007 12.59 -12.41 33,28 20.69 0 370 ND<.5 ND<,5 ND<2.5 ND¢5 760 ND<2.5 ND<50 NDQ.S ND<2.5 N '5 ND2.5 ND<12W MW-1 10/25200] 1259 '712.41 34.62 22.03 0 66 ND<p$p ND<p,50 ND<0.50 ND<0,50 52 ND<0.50 ND<10 ND<050 ND<0.50 ND<050 ND<0,50 ND250 MW-1 1123/2003 1259 -12.41 32.63 -20.04 0 50 ND<0.50 ND<0,50 ND<0.50 ND<1 .0 49 ND<050 ND<l0 ND<0.50 ND<0.50 ND<0.50 ND<0,50 Nl) 2 o MW4 5/19/2008 1259 -12.41 31.50 -1891 0 ND<50 ND<0.50 ND<050 ND<O50 ND<1 .0 19 ND<050 ND<10 ND<0.50 ND<0.50 ND<0,50 ND<050 NO<50 MW-] 7/10/2008 "T- 2.59 -1241 33.25 -20.66 0 57 ND<0.50 ND<0,50 ND<0.50 ND MW-1 11/32008 12.59 -1241 35.18 -22.59 0 ND<50 ND<050 ND<050 ND<0.50 ND MW-1 4/142009 12.59 45 -1241 32:35 -19.]6 p ND<50 ND<0.50 ND<0.50 ND<0.50 ND 8671 Historical GW Table QQ 20111 Page I of to ATC Pmjat No. 075.7511e.2781