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Stantec Consulting Project# 185750217.700.9401 666 West Weber Avenue, Stockton, California PRELIMINARY DATA PRELIMINARY DATA TEG Project 940711E BTEK Naphthalene, Oxygenates&TPH(EPA method 82608) Analyses of SOIL VAPOR in ug/L of Vapor METHANE Analyses of SOIL VAPOR in ppmV SAMPLE NUMBERBlank Shroud APSV-9 APSV-10 APSV-1 APSV-3 APSV-6 APSV-7 APSV-8 UPSV-1 UPSV-2 UPSV-3 UPSV-5 UPSV-6 Sample PURGE VOLUME. 7 7 7 7 7 7 7 7 7 7 7 7 AMOUNTPURGED(mi): 312 196 336 177 336 213 213 364 364 364 364 364 COLLECTION DATE: 7/11/14 7/11/14 7/11/14 7/11114 7/11/14 7/11114 7/11/14 7111/14 7/11/14 7/11/14 7/11/14 7/11/14 7/11114 7/11/14 COLLECTION TIME: 08:50 08:30 09:15 10:05 10:44 1106 11:34 11:56 1212 12:48 1312 13:34 14.'20 14:40 DILUTION FACTOR(VOCs): 1 10000 1 1 1 1 1 1 1 1 1 1 1 1 RL Benzene 0.040 nit -- 0.051 0.12 nit ne na nit nit rn nit ,b nd 0.29 Toluene 0.20 nd -- nd nd ne nd nd nd na ,w nit nd nd nd Ethylbenzene 0.10 nit -- nd nd .w nd nd nd nd nit nd nd nit nd Total Xylenes 0.10 nit -- nd nd nd nd nit nd nd w nit nit ne „d Naphthalene x035 nit -- nd nd nd nd nit nd nit m nit nit nit nit Tert-Butanol(TBA) 1.0 .w - nd nd nd nd nit nit nit ,w nit ,w ne nd Methyl-t-butyl ether(MtBE) 0.10 w - nd nd nd ,w nd nd nd nit ne nit nd ,w Diisopropyl ether(DIPE) 0,10 w -- nd nd ,w nd nd nd nd ,w nit ,m nd .w Ethyl-t-butyl ether(EtBE) 0,10 nd -- nit ,w m rw .w nd nit .w m nd nd nd Tert-amyl methyl ether(TAME) 0,10 nit - nd nd nit nd nd nit nd rw nd nd nd nd TPH 10 ,a -- 570 1200 .w .w nit 24 nit nd 120 23 3200 190 Methane 1000 nd - 300000 320000 nd 48000 66000 13000 iro ,w 85000 380000 18000 290000 1,1 Diflouroethane(leak check) 10 nd 450000 nd nd m ,w nd nd ne nd nd nd m nit 'nd' Indicates not detected at listed reporting limits 'RL' Indicates reporting limit in ug/L of Vapor at a dilution factor of 1 (Methane in parts per million by Volume(ppmV)) Analyses performed by: Mc Lane Sharon page 1