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Table 3, Continued <br /> ANALYTICAL RESULTS OF AIR SAMPLES <br /> ' Former Conrady Service Station <br /> 1002 North Yosemite Street <br /> ' Stockton,California <br /> NOTES <br /> ' TPHg=Total petroleum hydrocarbons as gasoline <br /> ' ND=Not detected in concentrations exceeding the indicated method detection limit <br /> ' VW-1 Presparge sample taken after approximately 50 minutes of applying a <br /> vacuum of 50-60 inches water Vacuum reduced to 10 inches immediately before sampling <br /> ' VW-1 Post-sparge sample taken the following day after applying 12 psi to <br /> sparge well SW-1 for 26 minutes,NO VAPOR EXTRACTION FROM VW-1 WHILE SPARGING, <br /> sample consists of air forced into well by spargmg SW-1 <br /> ' VW-2 Pre-sparge sample taken after approximately 60 minutes of applying a vacuum <br /> of 20-50 inches water Vacuum reduced to 10 inches immediately before sampling <br /> VW-2 Post-sparge sample taken the following day after applying 12 psi to <br /> ' sparge well SW-2 for approximately 60 minutes,NO VAPOR EXTRACTION FROM VW-2 <br /> WHILE SPARGING,sample consists of air forced into well by spargiing SW-2 <br /> I I I <br /> I � I <br /> ( I i <br /> f ` ' <br /> i I I <br /> I `I <br /> I II <br /> I I � <br /> " I I <br /> I[J! <br /> I I r ' I I <br /> '' �� I' !4 I �I I 'I II I <br /> I I"V11 "I I II 'I i If ,f I i I I �lli I "I II �I �� +I E III 41 I II{ li nl III�I I� <br /> '� I d�I'f I it � I I 14 <br />