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ft " 4rw dbaokft = �- MW WORM TABLE 2-2 SUMMARY OF GROUNDWATER ANALYTICAL DATA CALTRANS SHOP 10 STOCKTON, CALIFORNIA Sample TOC Depth to Groundwater TPI-Ig TPHd Benzene Toluene Ethylbenzene Total MTBE WeIII.D. Date Elevation Groundwater Elevation (pgll) W11) W11) W") hig,l) Xylene W/O (}�glt) 4924 A 9,000 <5000 100 00 3 00 6 0 0000 < VM-2 8125198 < <06 10/23/96 21 95 90 -3 9 60 < 0 26 0 15 61 <0 MW-25 5122197 2195 5484 -3289 <500 <500 <0 3 <0 3 <0 6 <0 6 <0 6 MW-25 9125197 2195 5728 -3533 <500 <500 <0 3 <0 3 <0 3 <0 6 <0 6 MW-25 12/29/97 2195 5642 -3447 <50 <5000 <0 5 <0 5 <0 5 <1 <5 MW-25 3116198 2195 5284 -3089 <50 <50 <0 5 <0 5 <0 5 <1 <5 MW-25 6115198 2195 4919 -2724 <500 <5000 <0 3 <0 3 <0 3 <0 6 <5 MW-25 8125198 -2783 <500 < ---<DT— < < < -26 10/24/96 59 8 -38 100 < 0 < MW-26 5122197 2121 5457 -3336 <500 <500 1 <0 3 <0 6 <06 <0 6 MW-26 9125197 2121 5681 -3560 <500 <500 <0 3 <0 3 <0 3 <06 <0 6 MW-26 12/29/97 2121 5616 -3495 <50 <5000 <0 5 <0 5 <0 5 1 <5 MW-26 9125197 2121 5681 -3560 <500 <500 <0 3 <0 3 <0 3 <0 6 <0 6 MW-26 6115198 21 21 48 83 -27 62 <SDO <5000 <0 3 <0 3 <0 3 <0 6 <5 MW-26 1 8125198 Well abandonedfremoved <500 <500 29 1 5 Q50d 05 32 1 <05 TOC=Top of casing elevations MSL= Mean Sea Level TPHG=Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015M TPHD=Total Petroleum Hydrocarbons as Diesel by EPA Method 8015M BTEX=Benzene,Toluene, Ethylbenzene,and Total Xylenes by EPA Method 8020 MTBE=Methyl Tertiary Butyl Ether by EPA Method 8020 <=Less than method detection limb =Not measured,sampled tested,or present NA=Not analyzed(chemical data)or not available(well survey data) All measurements are presented In feet mg/l=milligrams per Ider pgll=micrograms per filer (<5)=MTBE concentration calculated by EPA Method 8260 Pap 6 Tab1c2-2TJ&"