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Table 1 <br /> Groundwater Elevations and Sample Analytical Results <br />' Former E-Z Serve Location No 100966 <br /> 2537 Waterloo Road,Stockton, California <br /> Well Sampling TOC DTW GWE" PSH TPHg B T E X MTBE <br /> No Date feet feet feet feet) ) ( (µ <br /> MW-12 617/01 2082 4801 -2719 000 19,000 6,600 <100 760 1,100 <1,000 <br /> 11/6/012 2082 5527 -3445 000 15,000 4,100 <30 950 1,800 <1,000 <br />' 1/29/02 2082 5172 -3090 000 19,000 3,100 13 500 3,211 350 <br /> VW-1 6/20/97 2059 -- -- -- -- -` -- <br /> 11/19/97 2059 5786 -3727 000 72,000 28,000 5,200 800 5,000 <5 0 <br />' 6/7/01 2059 48 11 -2752 000 8,100 3,700 75 140 250 <250 <br /> 11/6/012 2059 55 17 -3458 000 10,000 3,800 87 130 410 <1,000 <br /> 1/29/02 2059 5146 -3087 000 1,100 700 74 270 286 54 <br /> 1 VW-2 6/20/97 2085 5250 -3165 000 -- -- -- -- "- `- <br /> 11/19/97 2085 5827 -3742 000 70,000 27,000 100 700 3,300 < <br /> 6/7/01 2085 4859 -2774 000 570 71 1 5 28 57 <br /> 11/6/012 2085 5565 -3480 000 1,100 35 1 8 22 32 87 <br /> 1/29/02 2085 5183 -3098 000 <500 14 24 46 13 1 75 <br /> VW-3 11/19/97 2102 58 13 -3711 000 110 22 1 5 < 41 91 <br /> 6/7/01 21 02 4848 -2746 000 71 <0 5 072 <0 5 <0 5 <5 <br /> 11/6/012 2102 5553 -3451 000 72 <0 30 <0 30 <0 30 <0 60 <10 <br /> 1/29/02 2102 5191 -3089 000 <500 <0 5 <0 5 <0 5 <1 5 34 <br /> Notes No known groundwater monitoring or sampling was conducted between December 9,1994 and September 17, 1996 and <br /> June 7,2001 and November 6,2001 <br /> TOC =Top of casing referenced to City of Stockton Benchmark No 63 [elevation=20 87 feet above mean sea level] <br /> DTW =Depth to water measured from top of casing <br /> GWE =Groundwater elevation as referenced to benchmark in feet below mean sea level <br />' PSH =Phase Separate Hydrocarbon thickness <br /> TPHg =Total Petroleum Hydrocarbons as gasoline(EPA Method 8015) <br /> B =Benzene(EPA Method 602 or 802011) <br /> T =Toluene(EPA Method 602 or 8020/1) <br /> E =Ethylbenzene(EPA Method 602 or 802011) <br /> X =Total Xylenes(EPA Method 602 or 802011) <br /> MTBE=Methyl t-Butyl Ether(EPA Method 8020 or 802 1) <br /> µg/L=Micrograms per liter(—parts per billion) <br /> <=Sample reported as"not detected,"in previous tables,reporting limit not known <br /> i =If PSH present,corrected GWE=TOC-Measured DTW+Corrected PSH <br /> Thickness(PSH Thickness x gas density[0 75 glcc]) <br /> 2 =MTBE analysts performed by EPA Method 8260 beginning on November 6,2001 <br />' --=Not measured,surveyed,sampled,or analyzed <br /> 1 <br /> Page 4 of 4 <br />