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a <br /> TABLE FOUR <br /> Summary of Chemical Analy5i5 of GROUNDWATER 5ample5 <br /> 547 West Grant Dine Road, Tracy, California <br /> DATE TPH Ethyl y Total Other <br />'. Welf LD. 5AMF LED Gasoline benzene Toluene Benzene Xylenes MT15E TAME TBA Compounds <br /> MW-1 10/12/2000 <50 <0.5 <0.5 <0.5 <0.5 65 <0.5 <5.0 NO <br /> 1/31/2001 <50 <0.5 <0.5 <0.5 <0.5 150 <0.5 23 ND <br /> f 4/11/2001 <50 <0.5 <0.5 <0.5 <0.5 720 0.8 34 ND ° <br /> 5/23/2001 90 0.74 <0.5 <0.5 <0.5 290 <0.5 13 ND <br />{ 7/31/2001 <50 <0.5 <0.5 <0.5 <0.5 130 <0.5 <5.0 ND <br /> 10/30/2001 <50 <0.5 <0.5 <0.5 <0.5 63 <0.5 <5.0 ND <br /> 1/29/2002 <50 <0.5 <0.5 <0.5 <0.5 17 <0.5 <5.0 ND <br /> i 4/30/2002 <50 <0.5 <0.5 <0.5 <0.5 14 <0.5 <5.0 ND <br /> MW-2 10/12/2000 10,000 310 440 170 1,100 1,400 4.8 82 ND <br /> 1/31/2001 3,000 320 97 180 200 1,900 5.6 160 ND <br /> 4/1112001 2,200 210 83 110 170 1,500 5.2 130 ND <br /> 5/23/2001 1,500 250 7.0 82 18 1,900 8.3 250 ND <br /> 7/31/2001 1,400 120 76 71 160 1,500 5.5 520 ND <br /> 10/30/2001 4,800 330 330 250 720 5,300 15 900 ND <br /> 1/29/2002 5,700 340 66 260 220 6,000 23 710 ND I <br /> 4/3012002 7,600 390 360 340 1,100 3,700 14 370 ND l <br /> MW-3 1011212000 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 ND <br /> 1/31/2001 <50 <0.5 <0.5 <0.5 <0.5 84 <0.5 <5.0 ND <br /> 4/11/2001 <50 <0.5 <0.5 <0.5 <0.5 4.0 <0.5 <5.0 ND <br /> 5/23/2001 <50 <0.5 <0.5 <0.5 <0.5 1.4 <0.5 <5.0 ND <br /> 713112001 <50 <0.5 <0.5 <0.5 <0.5 0.65 <0.5 <5.0 ND <br /> 10/30/2001 <50 <0.5 <0.5 <0.5 <0.5 1.5 <0.5 <5.0 ND <br /> 1/29/2002 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 ND <br /> 4/30/2002 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 ND <br /> MW-4 10/12/2000 260 17 <0.5 5.0 7.5 140 6.0 <5.0 ND <br /> 1/31/2001 380 37 <0.5 43 4.3 140 5.8 <5.0 ND <br /> 4/11/2001 680 69 <0.5 36 3.4 280 13 9.8 ND <br /> 5/23/2001 290 31 <0.5 6.4 <0.5 260 14 24 ND <br /> 7/3112001 210 15 <0.5 3.0 <0.5 200 11 28 NI) <br /> 10/30/2001 810 49 <0.5 29 0.93 290 22 9.0 0.54* II <br /> P 1/29/2002 630 84 <2.0 32 <2.0 510 19 <20 ND r <br /> 413012002 290 25 <2.0 <2.0 <2.0 540 25 <20 ND <br /> t <br /> MW-5 10/12/2000 2,600 <0.5 <0.5 11 1.6 84 <0.5 52 ND <br /> 1/31/2001 350 <0.5 <0.5 0.62 <0.5 15 <0.5 7.6 ND <br /> 4/11/2001 1,000 <0.5 <0.5 <0.5 <0.5 28 <0.5 26 ND <br /> 5/23/2001 920 <0.5 <0.5 3.8 <0.5 66 <0.5 79 ND <br /> 7/31/2001 240 <0.5 <0.5 <0.5 <0.5 24 <0.5 35 ND <br /> 10/3012001 510 <0.5 <0.5 <0.5 <0.5 33 <0.5 25 ND <br /> 1/29/2002 <50 <0.5 <0.5 <0.5 <0.5 17 <0.5 6.1 ND <br /> 4/30/2002 130 <0.5 <0.5 <0.5 <0.5 14 <0.5 10 ND <br /> MW-6 8/24/2001 67 <0.5 <0.5 <0.5 <0.5 1.4 <0.5 <5.0 ND <br /> 1/29/2002 <50 <0.5 <0.5 <0.5 <0.5 0.77 <0.5 <5.0 ND <br /> 4/30/2002 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <5.0 NO <br /> 3 F <br /> No e• <br /> Non-detectable concentrations are noted by the less than yymbo6(<) followed by the detection limit. i <br /> Current analytical data is in bold. <br /> DH5 MCL is the California DeKrartment of Health Servicer,maximum contaminant level for drinking water. i <br /> ND=Not Detected above laboratory detection limits. <br /> NE=DHS MCLS are not established, <br /> MTBE=Methyl tert-butyl-ether <br /> TAME-Tert-amyl methyl ether <br /> TBA=Tert Butanol <br /> "=Ethyl-t-butyl ether(ET6E)detected. <br /> I <br /> i <br /> i <br /> i <br />