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� � � � � � � � � i � � I• � Ittllllr � »� � <br /> TABLE 2-2 <br /> SUMMARY OF GROUNDWATER ANALYTICAL DATA <br /> SHOP 10 MAINTENANCE STATION, CALTRANS <br /> STOCKTON, CALIFORNIA <br /> Sample TOC Depth to Groundwater TPHcg TPHd Benzene Toluene Ethylbenzene Total MTBE <br /> Well l.DXylenes <br /> ®ate Elevation Groundwater Elevation W") W") W") W") {p9lly Xylenes <br /> ) WOO <br /> 9 09 6 < 0 < <br /> VW-1 113/16/98 22 09 5299 -3090 2,500 940 520 120 67 230 <5 <br /> We as not been surveyed 9,0 < , 00 , 0 9 1,106 <0 <br /> VM-1 9125197 Well was dry <br /> VM-1 12129/97 5666 23,000 <5000 4,000 1,300 910 2,300 <100 <br /> VIM 22 97 Well has not been surve 64,000 <500 28,000 0 , D 7000 <0 <br /> VM-2 9125197 Well has not been surveyed 72,000 <500 26,000 3,700 1,800 4,600 51 <50 <br /> VM-2 12/29/97 Well has not been surveyed 48,000 <5000 12,000 840 1,700 2,500 <250 <br /> -25 10/23/96 9 0 60 <90 50 10 61 < <br /> MW-25 5/22197 2195 5484 -3289 <500 <500 <0 3 1 <0 3 <0 6 <0 6 <0 6 <br /> MW-25 9125197 2195 5728 -3533 <500 <500 <0 3 <0 3 <0 6 <0 6 <0 6— <br /> MW-25 12/29/97 2195 5642 -3447 <50 <5000 <0 5 <0 5 <0 5 <1 <5 <br /> < < < < < <T—,—<5 <br /> 96 2 21 5958 - 8 00 <56 <0 5 <0 5 <0 5 <0 <br /> MW-26 5/22/97 2121 5457 -3336 <500 <500 1 <03 <0 6 <0 6 <0 6 <br /> MW-26 9125197 2121 5681 -3560 <500 <500 <0 3 <0 3 <0 6 <4 6 <0 6 <br /> MW-26 12/29/97 2121 5616 -3495 <50 <5000 <0 5 <0 5 <0 5 12 <5 <br /> MW-26 311§ILL 2121 5261 .1140 <50 92 <0 5 <0 5 <0 5 12 <5 <br /> TQC=Top of casing elevations <br /> MSL= Mean Sea Level <br /> TPHG=Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015M <br /> TPHD=Total Petroleum Hydrocarbons as Diesel by EPA Method 8015M <br /> BTEX=Benzene,Toluene,Ethylbenzene,and Total Xylenes by EPA Method 8020 <br /> MTBE=Methyl Terhary Butyl Ether by EPA Method 8020 <br /> <=Less than method detection limits <br /> =Not measured,sampled tested,or present <br /> RWGCB=Central VaAey Regional Water Quality Control Board <br /> All measurements are presented In feet <br /> mg1l=milligrams per lifter <br /> pg1l=micrograms per rater <br /> (<5)=MTBE concentration calculated by EPA Method 8260 <br /> Page 5 Tablet-2lOM/98 <br />