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• �E 1 Oage 7 of 7 - <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2166 <br /> 3212 North Califomia Street Stockton California <br /> Top of Casing Static Water[i] Screen Groundwater Total <br /> Well Sample Elevation Level Interval Elevation Groundwater TPHg Benzene Toluene Ethylbenzene Xylenes MIRE[3] <br /> Sample No Date feet msl feet b s feet b s feet msl Flow Direction m L —m L---m m LA Observations <br /> VW 3B 5/23/1996 1501 4576 4261 3075 E 290 <0 5 <05 <0 5 <0 5 <30 No FP No S <br /> 9/19/1996 5402 3901 NE 310 <G5 <0 5 <05 <0 5 <3 0 No FP No S <br /> 11/27/1996 51 15 3614 SE 280 <0 5 <0 5 <0 5 <0 5 <3 0 No FP No$ <br /> 3/21/1997 4249 2748 SE 180 <0 5 <0 5 <05 <0 5 <3 0 No FP No S <br /> 5/22/1997 4428 2927 E NE 240 <0 5 <0 5 <05 45 <3 0 No FP No S <br /> 8/20/1997 5021 3520 E NE 200 <05 <0 5 <05 <0 5 <5 0 No FP Nos <br /> 1112011997 4946 3445 E 160 46 44 26 67 <5 0 No FP,No S <br /> 2/17/1998 4472 2971 ESE 93 <05 <05 <05 <05 <50 No FP NoS <br /> 6!24!1998 3628 2127 E <50 <0 5 <0 5 <0 5 <0 5 <5 0 No FP No 5 <br /> 9121!1998 39 69 2468 E NE 227 455 <0 5 222 324 159 No FP No S <br /> 12/14/1998 3790 2289 E NE 571 <05 <0 5 <0 5 105 <5 0 No FP No S <br /> 3131/1999 3581 2080 NNE <50 <0 5 <05 <05 <0 5 <5 0 No FP No S <br /> 611111999 3460 1959 ENE 152 19 <05 699 162 186 No FP No <br /> 9/1011999 38 77 2376 E NE 1 210 546 <05 545 137 1590 No FP No S <br /> 12/311999 3876 2375 E 804 <05 <0 5 <0 5 <05 149 No FP No S <br /> 4/312000 3545 2044 NE <50 338 <0 5 186 562 30 No FP No 5 <br /> 6/22/2000 3551 2050 E 1 690 848 384 227 432 3 180[4] No FP No S <br /> 9/27/2000 4081 2580 E NE NS NS NS N5 NS NS No FP,No S <br /> 1011912000 4064 2563 E NE NS NS NS NS NS NS No FP No S <br /> 12120/2000 3871 2370 E NE <50 <0 5 <0 5 <0 5 <0 5 26 5[4) No FP No S <br /> 3/16/2001 3760 2259 E NE <50 <05 <05 <05 <0 5 9 12[4] No FP No S <br /> 6/21/2001 4043 2542 NE <1 000" 97 53 290 750 5 000141 No FP No S <br /> x9113101[81 4619 3118 ENE <50 <05 <05 <05 <05 9014] No FP No <br /> 12/11/2001 4341 2840 NE <50 <0 50 <0 50 <0 50 <0 50 200[4) No FP No S <br /> 3114/2002 4037 2536 E NE <50 <0 50 <0 50 <0 50 <0 50 26[4) No FP No S <br /> 611912002 4271 2770 E NE 46017] <0 50 <0 5o <0 50 <0 50 1 500[4) No FP No S <br /> 9/12/2002 4960 3459 E NE 320 <25 <25 <2 5 <25 140 No FP No S <br /> 1213/2002 4660 31$9 ENE <500 <5 0 <5 0 <5 0 <50 69 No FP No S <br /> 3/11/2003 4651 3150 NE 380 <2 5 <2 5 <2 5 <2 5 370 No FP No S <br /> 6/912003 4239 2736 E NE 2,600 <10 <10 <10 <10 6,900 No FP,No S <br /> Notes <br /> msi=mean sea level TPHg=Total petroleum hydrocarbons as gasoline `=Raised MRL due to high analyte concentration requiring sample dilutioi <br /> bgs=below ground surface MtBE=Methyl tert-butyl ether "=Reporting limit raised due to matrix interference <br /> mg/L=micrograms per Liter <=Below detection limit for the analytical method used <br /> [1]Measured below top of casing <br /> (2]Measured from ground surface FP=Free product Measured In feet <br /> [3]MtBE was analyzed using USEPA Method 8020 5=Sheen <br /> [4]MTBE was analyzed using USEPA Method 8260 NM=Not measured <br /> (5]Chromatogram Pattern Weathered Gasoline C6 C-12 NA=Not analyzed <br /> [6]Sample analyzed outside USEPA recommended hold time NS=Not sampled <br /> [71 Hydrocarbon pattern is present in the requested fuel quantitation range,but does not resemble the pattern of the requested fuel <br /> ]8]On the chain-of-custody forms,samples were Identified as MW-1 B,MW-2B,and MW-3B,respectively <br /> K 1WprocessU5 BP ARC010218MQuarleriyR2 QTR 0312186 GWMR 2Q03 <br />