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Groundwater Monitoring Data <br /> ARCO Service Station No. 6020 <br /> 1711 Yosemite Avenue, Manteca, California <br /> Elevation Static Water Elevation Total <br /> ILL: Date Top of Casing level of Water TPHG Benzene Toluene Eth ]benzene Xylenes MTBE Observations <br /> MW-3 <br /> MW-3 05/24/93 4284 2055 2229 NA NA NA NA NA No FP No S <br /> MW-3 06/15/93 4284 1989 2295 NA NA NA NA NA No FP,No S <br /> 111W-3(36) 08/18/93 4284 2103 2181 <50 <0 5 <0 5 <05 <0 5 No FP No S <br /> MW-3(22) 07/18/94 4284 2124 21 6 <10 <0 3 <0 3 <0 3 <0 5 No FP S=NE <br /> MW-3 12/05/94 4294 2051 2233 NS <br /> M W-3 07/28/95 4284 1969 23 15 <50 <0 5 <0 5 <0 5 <0 5 No FP S=NE <br /> MW-3 07/03/96 4284 1828 2456 <50 <0 5 <0 5 <05 <0 5 <3 No FP,No S <br /> I <br /> IN7 W-4 <br /> W-21-MW-4 12/16/92 4209 2193 2016 <50 <0 5 <0 5 <05 <05 No FP No S <br /> N1W-4(34) 02/26/93 4209 2049 2160 <50 <05 <0 5 <0 5 <05 No FP No S <br /> N1W 4 03/01/93 4209 2043 21 66 NA NA NA NA NA No FP,No S <br /> MW-4 04/02/93 4209 2000 2209 NA NA NA NA NA No FP,No S <br /> N IW-4(34) 04/20/93 4209 2004 2205 <50 <05 <0 5 <05 <0 5 No FP No S <br /> MW4 05/24/93 4209 1982 2227 NA NA NA NA NA No FP No S <br /> MW4 06/15/93 4209 19 17 2292 NA NA NA NA NA No FP No S <br /> NtW-4(34) 08/18/93 4209 2030 2179 <50 <05 <05 <0 5 <0 5 No FP No S <br /> MW-4(2 1) 07/18/94 4209 2052 2157 <10 <0 3 <0 3 <0 3 <0 5 No FP S=NE <br /> MW4 12/05/94 4209 2078 2131 NS No FP No S <br /> MW-4 07/28/95 4209 1899 23 10 <50 <05 <05 <05 <0 5 No FP No S <br /> MW-4 07/03/96 4209 1755 2454 <50 <05 <05 <05 <0 5 <3 No FP,No S <br /> *=Data before 03/10/92 collected b}RESNA NS=Not Sampled <br /> Analytical results in parts per billion(ppb) NM=Not measured <br /> TPHG= I oW petroleum hydrocarbons as gasoline,measurements in feet Elevation datum is Mean Sea Level <br /> M`FBE=Methyl-ten butylether FP=Free product <br /> <=Belou detection limit for analytical methods used S=Sheen <br /> NA=Not analyzed O=Obvious product odor <br /> Sample dLsignations S=NE <br /> MW4(34) Well 11)and sample depth(feet) <br /> NALSA805\151OM72596SI US Revision 1 7125196 <br />