ARCHIVED REPORTS XR0000829 - Laserfiche WebLink

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Or T 1 Groundwater Monitoring Data ARCO Service Station No 2186 3212 North California Street, Stockton, California Elevation of Static Water[]] Screen Elevation of Total Well Top of Casing Level Interval Groundwater Groundwater TPHG Benzene Toluene Ethylbenzene Xylenes MTBE[31 ISample No Date feet msl) feet b s feet b s feet msl Flow Direction !L L L L Observations VW-311 5/23196 1501 4576 42 61 -3075 E 290 <0 5 <0 5 <0 5 <0 5 <3 0 No r P,No S 9119/96 5402 -3901 NE 310 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 11/27/96 51 15 -36 14 SE 280 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 3/21/97 4249 -2748 SE 180 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 5/22/97 4428 -2927 E NE 240 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 8/20197 5021 -3520 E NE 200 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 11/20/97 4946 -3445 E 160 46 44 26 67 <5 0 No FP No S 2117/98 4472 -2971 E-SE 93 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 6/24198 3628 -2127 E <50 <0 5 <0 5 <0 5 <0 5 <5 0 No FP No S 9/21198 3969 -2468 F--NF 227 456 <0 5 222 324 159 No FP,No S 12/14/98 3790 -2289 E-NE 57 1 <0 5 <0 5 <0 5 105 <5 0 No FP,No S 3131/99 35 81 -2080 NNE <50 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 6/11199 3460 1959 E-NE 152 1 9 <0 5 699 162 186 No FP,No S 9110199 3977 23 76 E-NE 1210 546 <0 5 54 5 1 37 1590 No FP No S 1213/99 3876 23 75 E 804 <0 5 <0 5 <0 5 <0 5 149 No FP,No S 4/3100 35 45 2044 NE <50 3 38 <0 5 1 86 562 30 No FP,No S 6122/00 35 51 -2050 E 1,690 948 3 84 227 432 3,180[4] No FP,No S 9127100 4081 25 80 ENE NS NS NS NS NS NS No FP,No S 10/19/00 4064 -25 63 E-NE NS NS NS NS NS NS No FP,No S 12/20/00 3871 2370 E-NE <50 <0 5 <0 5 <0 5 <0 5 26 5[41 No FP No S 3116101 3760 2259 ENE <50 <0 5 <0 5 <0 5 <0 5 9 12[41 No FP,No S 6121101 4043 -2542 NE <1 000** 97 53 290 750 5,000[4] No FP,No S 09/13/01 [8] 46 19 -31 18 E-NE <50 <0 5 <0 5 <0 5 <0 5 90[41 No FP,No S 12/11/01 4341 -2940 NE <50 <0 50 <0 50 <0 50 <0 50 200[4] No FP,No S 3114102 4037 -2536 E NE <50 <0 50 <0 50 <0 50 <0 50 26[4] No FP,No S msl=mean sea level TPHG=Total petroleum hydrocarbons as gasoline *=Raised MRL due to high analyte concentration requiring sample dilution bgs=below ground surface MTBE=Methyl tertiary butyl ether •"=Reporting limit raised due to matrix interference [1]Measured below top of casing <=Below detection limit for the analytical method used [2]Measured from ground surface FP=Free product Measured in feet [3]MTBE was analyzed using USEPA Method 8020 S=Sheen [4]MTBE was analyzed using USEPA Method 8260 NM=Not measured [5]Chromatogram Pattern Weathered Gasoline C&C 12 NA=Not analyzed [6]Sample analyzed outside USEPA recommended hold time NS=Not sampled [71 Hydrocarbon pattern is present in the requested fuel quantitation range,but does not resemble the pattern of the requested fuel [81 On the chain-of-custody forms,samples were identified as MW-IB,MW-2B,and MW-313,respectively ARCO_21H_Quar1erly_Dat8XIS 6 of 6 Delta