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10TH STREET <br /> • _ •- _ _ - MW-2 <br /> t <br /> I BH--1 <br /> FORMER STATION e <br /> BUILDING <br /> - <br /> I <br /> am <br /> MW <br /> 0 <br /> I - 4 BH— i y <br /> I+ M -1 1 <br /> � p : , t <br /> BH-3 <br /> � a <br /> I MW-3 � <br /> i Iwwt- a5/ND/230 OH2-20/s / sa + ti <br /> I <br /> I <br /> approximate area = 1,000 square feet 4 <br /> LEGEND Remaining Hydrocarbon Mass Calculation <br /> O SOIL BORINGS (VERSAR 1989) 35 000, cu f1 1 125 Lbs 45 k soil 0 298• m C 1 Ib HC <br /> + GROUNDWATER MONITORING WELL cu (1 Ib kg soil I 454 OUO mgHC <br /> (VERSAR 1989 GTI 1990 do 1994) <br /> FORMER UST LOCATIONS = 1 pound of hydrocarbons <br /> �l (0 2 gallon equivalent) <br /> SOIL SAMPLE ID—DEPTH/BENZENE (ppb)/TPH <br /> OAPPROXIMATE EXTENT OF = 1h1Cknes2 of hydrocarbon Impacted zone assumed Io be 35 feet (I5 — 50 N b9s) <br /> HYDROCARBON IMPACTED SOIL <br /> = o"eroge concentration cakulolnq analytical data om uw—t (230 ug/kg) and <br /> NOTE <br /> 91+-2 (350 u9/ 9)Ik `(230+356,/2]/1000 a 029 mg/kg <br /> 1 ALL SOIL SAMPLES NOT SHOWN ARE ND (SEE TEXT) <br /> 2 ALL STRUCTURES AND USTs <br /> HAVE BEEN REMOVED <br /> F_]o s GROUNDWATER ° FEET <br /> a0 REMAINING HYDROCARBON MASS <br /> 1100TECHNOLOGY SCALE <br /> CLIENT FILE PROJECT NO PM PE/RG, <br /> CHEVRON USA PRODUCTS CO 0189SMA2(1 40) 02070-0189 <br /> FORMER S S NO 9-5075 REV <br /> LOCATION F RE <br /> 2400 AIRPORT WAY DES DET =DATI 4 <br /> STOCKTON, -CALIFORNIA JF JF /30/96 <br />