Laserfiche WebLink
TO 1 <br /> Groundwater Monitoring Data Page 2 of 2 <br /> ARCO Service Station No. 2186 <br /> 3212 North California Street <br /> Stockton, California <br /> Well Elevation of Static Water[1] Top of Elevation of Total <br /> Sample No. Date Top of Casing Level Screen[2] Groundwater TPHG Benzene Toluene Eth lbenzene Xylenes MTBE Observations <br /> MW-3 (cont.) 11/27/96 14.55 50.51 -35.96 <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 03/21/97 14.55 41.97 -27.42 <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 05/22/97 14.55 43.61 -29.06 <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 08/20/97 14.55 49.43 -34.88 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S <br /> 11/20/97 1455 48.82 -34.27 <50 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S <br /> MW-4 11/20/97 13.83 48.36 45.00 -34.53 89 1.0 1.1 0.63 2.0 11 [3] No FP,No S <br /> VW-3 05/23/96 NM 45.76 41.80 NM 290 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 09/19/96 54.02 NM 310 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 11/27/96 NM 51.15 NM 280 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 03/21/97 NM 42.49 NM 180 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 05/22/97 NM 44.28 NM 240 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S <br /> 08/2.0/97 NM 50.21 NM 200 <0.5 <0.5 <0.5 <0.5 <5 No FP,No S <br /> 11/20/97 NM 49.46 NM 160 4.6 4.4 2.6 6.7 <5 [3] No FP,No S <br /> [l1 Measured below top of casing. <br /> [21 Measured from ground surface. <br /> [31 For the 11/20/97 monitoring event,MTBE was also analyzed using USEPA Method 8260,see Table 2. <br /> *=Raised MRL due to high analyte concentration requiring sample dilution. MTBE=Methyl tert-butyl ether. <br /> *=Reporting limit raised due to matrix interference. FP=Free product.Measured in feet. <br /> Analytical results in parts per billion(ppb). S=Sheen. <br /> Elevation datum is mean sea level. NM=Not measured. <br /> HG=Total petroleum hydrocarbons as gasoline. NA=Not analyzed. <br /> Below detection limit for the analytical method used. <br /> N:\XLS\0805\14703\011498M1.XLS Emcon <br /> Sheetl <br /> 2120198 <br />