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TIV 1 �4of4
<br /> Groundwater Monitoring Data
<br /> ARCO Service Station No. 2168, 441 Charter Way, Stockton, California _
<br /> Well Elevation Static Elevation
<br /> Sample of Top Water of Total
<br /> Number Date of CasingLevel Groundwater TPHG Benzene Toluene Etli lbenzene Xylenes MTBE Observations
<br /> MW-6
<br /> MW-6(46) 05/17/95 893 3064 -2171 130,000 9,900 16,000 1,800 10,000 No FP,No S,O=NE
<br /> MW-6(46) 08/15/95 893 3022 -2129 120,000 7,700 9,700 1,500 8,900 No FP,No S,Yes 0
<br /> MW-6(45) 11/29/95 893 3030 -21 37 160,000 8,200 11 000 1,700 10,000 No FP,No 5,Yes 0
<br /> NNW-6 02/27/96 893 2755 -1862 96,000 10 000 13,000 1,400 8 100 No FP,No S, Yes 0
<br /> MW-6(47) 05/15/96 893 2579 -1686 99,000 8,800 12,000 1,400 8,000 <900** No FP,No S,Yes 0
<br /> MW-7
<br /> A�VV-7 10/28/93 899 38 11 -2923 42,000 31,000 9,300 970 6,000 No FP,No S,Yes 0
<br /> A1W-7 03/23/94 888 3663 -2775 44,000 3,000 8,600 870 5,600 No FP
<br /> MW-7 06/29/94 888 3739 -2851 24,000 850 4 500 630 4 400 No FP,S=NE O=NE
<br /> MW-7(39) 09/26/94 888 3867 -2979 46,000 1,600 6,400 610 4200 No FP,S=NE,O=NE
<br /> MW-7 12/01/94 889 3887 -2999 24 000 800 5 700 560 4,500 No FP,No S O=NE
<br /> MW-7 02/16/95 Well Inaccessible
<br /> MW-7 05/17/95 880 3050 -2170 40,000 2,300 8,200 820 4,800 No FP,Na S,O=NE
<br /> MW-7(48) 08/15/95 880 3041 -2161 30,000 1,400 4,400 490 2,800 No FP,No S,Yes O
<br /> MW-7(48) 11/29/95 880 3056 -2176 45,000 2,100 6,400 800 3,600 No FP,No S,Yes 0
<br /> MW-7 02/27/96 880 2775 -1895 40,000 2,700 7,800 740 4 000 No FP,No S,Yes O
<br /> MW-7(48) 05/15/96 880 26 13 -17 33 38,000 2,500 7,300 790 4,100 <500* No FP,No S,Yes 0
<br /> TBLB
<br /> TBLB 09/26/94 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA
<br /> TBLB 12/01/94 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA
<br /> TBLB 02/16/95 NA NA NA <50 <0 5 <0 5 <0 5 <0 5 NA
<br /> NA =Not applicable NS=Not sampled NE=Not evaluated O=Obvious product S=Sheen FP=Free product
<br /> Anal}ucal results to parts per billion
<br /> Measurements in feet
<br /> HG=Total petroleum by drocarbons as gasoline
<br /> Elevation datum is mean sea level
<br /> <=Below detection limit for anal)tical methods used
<br /> *=Raised method reporting limit due to lugh analyte concentration requiring sample dilution
<br /> **=Raised method reporting limit due to matrix interference
<br /> e des a at o s
<br /> MW 4(34)-Well ID and sample depth(feet)
<br /> W 24 MW3R Water sample,sample d (feet) R=Rtnsate blank
<br /> Revision 2 7/30196
<br /> N\XLS\0805 1460T061996S 1 XLS
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