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Table 1 <br /> Groundwater Elevations and Sample Analytical Results <br /> Former E-Z Serve Location No 100878 <br /> 1012 West Yosemite Avenue,Manteca,California <br /> Well No Sampling TOC DTW GWEi PSH TPHg B T E X MTBE <br /> (screened interval) Date feet (feet) (feet) (feet ) ( -- - ) ( ) - <br /> 11/21/97 3125 1498 1627 000 <br /> 12/10/98 3125 1181 1944 000 <50 <0 5 <0 5 <0 5 <0 5 <5 0 <br /> 215/012 31 25 1345 1780 000 <50 <0 5 <0 5 <0 5 <0 5 <0 5 <br /> 5/24101 3125 1415 1710 000 -- - -- -1118101 31 25 1636 1489 000 <50 <0 30 <0 30 <0 30 <0 60 <1 0* <br /> 1/31/023 3125 1381 1744 000 <500 <0 5 <0 5 <0 5 <0 5 <1 <br /> 5/2102 3125 1420 1705 000 <500 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> 8123/02 3125 18 16 1309 000 <50 <0 50 <0 50 <0 50 <1 5 <1 0 <br /> 11/22/02 31 25 1712 14 13 000 <50 <0 5 <0 5 <0 5 <05 <0 5 <br /> Notes Latest analytical results above their respective Practical Quantitation Limits are in boldface font No Known <br /> �I groundwater monitoring or sampling was conducted between December 10,1998 and February 5,2001 <br /> TOC =Top of casing referenced to USGS Benchmark HSo208[elevation=38 20 feet above mean sea level] <br /> DTW =Depth to water measured from the top of casing <br /> GWE =Groundwater elevation as referenced to benchmark in feet above mean sea level <br /> PSH =Phase Separate Hydrocarbons thickness <br /> TPHg =Total Petroleum Hydrocarbons as gasoline(EPA Method 80 15) <br /> B =Benzene(EPA Method 8020 or 802 1) <br /> T =Toluene(EPA Method 8020 or 8021) <br /> E =Ethylbenzene(EPA Method 8020 or 802 1) <br /> X =Total Xylenes(EPA Method 8020 or 802 1) <br /> MTBE =Methyl-ten Butyl Ether(EPA Method 8020,8021,or 8260) <br /> ' µg/L =Micrograms per liter(--parts per billion) <br /> (10'-24') =Well screen interval(in feet) <br /> < =Sample reported as not detected in previous tables,reporting limit not known <br /> NP=No-purge sample collected <br /> i =1f PSH present,corrected OWE=TOC-Measured DTW+Corrected PSH <br /> Thickness(PSH Thickness x gas density[0 75]) <br /> 2 =All analysis by EPA Method 8260 <br /> 3 =All analysis by EPA Method 8260 on January 31,2002 and thereafter <br /> =MTBE analysis by EPA Method 8260B <br /> ' =Not measured,sampled,or analyzed <br /> r r , <br /> I <br /> { 'I <br /> I I I <br /> r r <br /> I- <br /> i <br /> I <br /> II <br /> 151E Z3erve11008761Rsvorts1EZ878GwR0o1 Page 5 of <br /> k_ I <br />