ARCHIVED REPORTS XR0000813 - Laserfiche WebLink

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• TA 1 Groundwater Monitoring Data ARCO Service Station No 2186 3212 North California Street, Stockton, California Elevation of Static Water[11 Screen Elevation of Total Well Top of Casing Level Interval Groundwater Groundwater TPHG Benzene Toluene Ethylbenzene Xylenes MTBE[3] Sample No Date (feet ms]) (feet b s) (feet b s) feet rnsl) Flow Direction pph ppb ppb ppb ppb PPb, Observations VW-2B 9/12/2002 4931 3439 ' E-NE 400 <2.5 Q.5 Q.5 <2.5 210 No FP,No S (Cont) VW-3A 10/19/2000 1502 3600 22-37 -2098 NS NS NS NS NS NS No FP No S 12/20/2000 3605 -2103 --- NS NS NS NS NS NS No FP,No S 3/16/2001 3600 -2098 --- NS NS NS NS NS NS No FP,No S 6/21/200] 3604 -2102 --- NS NS NS NS NS NS No FP,No S 9/13/2001 3610 -2108 NS NS NS NS NS NS No FP No S 12/11/2001 35 85 -2083 -- NS NS NS NS NS NS No FP,No S 3/14/2002 35 89 -2087 NS NS NS NS NS NS No FP,No S 6/19/2002 3590 -2088 NS NS NS NS NS NS No FP No S 9112!2002 DRY DRY --- NS NS NS NS NS NS No FP,No S VW-3B 5/23/1996 1501 4576 42-61 3075 E 290 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 9/19/1996 5402 -3901 NE 310 <0 5 <0 5 <0 5 <0 5 <3 0 No FP No S 11/27/1996 5115 -36 14 SE 280 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 3/21/1997 4249 -2748 SE 180 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 5/22/1997 4428 -2927 E-NE 240 <0 5 <0 5 <0 5 <0 5 <3 0 No FP,No S 8/20/1997 5021 -3520 E-NE 200 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 11/20/1997 4946 -3445 E 160 46 44 26 67 <5 0 No FP,No S 2/17/1998 4472 -2971 E-SE 93 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 6/24/1998 3628 -2127 E <50 <0 5 <0 5 <0 5 <0 5 <5 0 No FP No S 9/21/1998 3969 -2468 E-NE 227 456 <0 5 222 324 159 No FP No S 12/14/1998 3790 -2289 E NE 571 <0 5 <0 5 <0 5 105 <5 0 No FP,No S 3/31/1999 35 81 -2080 N-NE <50 <0 5 <0 5 <0 5 <0 5 <5 0 No FP,No S 6111/1999 3460 -1959 E-NE 152 19 <0 5 699 162 186 No FP No S 9/10/1999 3877 -2376 E-NE 1 210 546 <0 5 545 137 1590 No FP No S 12/3/1999 3876 -2375 E 804 <0 5 <0 5 <0 5 <0 5 149 No FP,No S 4/3/2000 3545 -20 44 NE <50 338 <0 5 186 562 30 No FP,No S 6/22/2000 35 51 -2050 E 1,690 848 394 227 432 3,180[41 No FP,No S 9/27/2000 4081 -2590 E-NE NS NS NS NS NS NS No FP No S 10/19/2000 4064 -2563 E-NE NS NS NS NS NS NS No FP,No S 12/20/2000 3871 -2370 E NE <50 <0 5 <0 5 <0 5 <0 5 26 5[41 No FP,No S 3/16/2001 3760 -2259 E NE <50 <0 5 <0 5 <0 5 <0 5 9 12[41 No FP,No S 6/21/2001 4043 -2542 NE <1,000** 97 53 290 750 5 000[4] No FP,No S 09/13/01[81 46 19 -31 18 E-NE <50 <0 5 <0 5 <0 5 <0 5 90[41 No FP,No S 12/11/2001 4341 -2840 NE <50 <0 50 <0 50 <0 50 <0 50 200[4] No FP No S 3/14/2002 4037 -2536 E-NE <50 <0 50 <0 50 <0 50 <0 50 26[4] No FP,No S 6!1912002 4271 -2770 E NE 460[7] <0 50 <0 50 <0 50 <0 50 1,500[4] No FP No S 9/12/2002 4960 -3459 — E-NE 320 <2 5 4.5 <2 5 d.5 140 No FP,No S Notes msl=mean sea level TPHg=Total petroleum hydrocarbons as gasoline *=Raised MRL due to high analyte concentration requiring sample dilution bgs=below ground surface M(BE=Methyl tert butyl ether **=Reporting lirrut raised due to matrix interference j I]Measured belowlop of casing <=Below detection limit for the analytical method used K U5 BP ARC0T21861Quarterly\3_QTR 0212186 GWMR 3Q02