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Stantec Consulting <br />Project # 185750217 <br />666 West Weber Avenue, Stockton, Califomia <br />TEG Project#60324E <br />Analyses of SOIL VAPOR <br />BTEX, Naphthalene, Oxygenates & TPH (EPA method 82608) in micrograms per cubic meter of Vapor <br />METHANE in parts per million by Volume <br />(ppmV) <br />SAMPLE NUMBER: <br />APSV-6 APSV-7 APSV-8 <br />APSV-9 <br />APSV-10 <br />APSV-11 <br />PURGE VOLUME: <br />7 7 7 <br />7 <br />7 <br />7 <br />AMOUNT PURGED (m1): <br />336 213 213 <br />312 <br />196 <br />297 <br />COLLECTION DATE: <br />324/16 324(16 324116 <br />325116 <br />325116 <br />324116 <br />COLLECTION TIME: <br />12:13 12:14 13:25 <br />09:06 <br />09:07 <br />11:10 <br />DILUTION FACTOR: <br />1 1 1 <br />2.5 <br />2,5 <br />1 <br />RL <br />Benzene 40 <br />ntl ad nd <br />ad <br />ntl <br />nd <br />Toluene 200 <br />nd ntl nd <br />ad <br />nd <br />nd <br />Ethylbenzene 100 <br />nd nd nd <br />nd <br />ad <br />ad <br />Total Xylenes 100 <br />nd nd nd <br />ad <br />nd <br />ad <br />Naphthalene 35 <br />nd nd nd <br />nd <br />nd <br />nd <br />Tert-Butanol (TBA) 1000 <br />rd ad nd <br />nd <br />ad <br />nd <br />Methyl-t-butyl ether(MtBE) 100 <br />nd nd nd <br />ad <br />ad <br />nd <br />Diisopropyl ether (DIPE) 100 <br />ad nd nd <br />ad <br />ad <br />ad <br />Ethyl-t-butyl other(EtBE) 100 <br />nd ad ad <br />ad <br />ad <br />nd <br />Tert-amyl methyl ether (TAME) 100 <br />nd nd nd <br />nd <br />ad <br />nd <br />TPH 10000 <br />nd nd ad <br />510000 <br />830000 <br />11000 <br />Methane 1000 <br />rd nd ad <br />290000 <br />250000 <br />ad <br />1,1 Difluoroethane (leak check) 10000 <br />nd ad ad <br />ntl <br />ad <br />nd <br />Surrogate Recovery: <br />DBFM <br />80% 80% 79% <br />77% <br />76% <br />79% <br />1,2-DCA-d4 <br />89% 91% 94% <br />84% <br />79% <br />86% <br />1,4-BFB <br />81% 81% 79% <br />85% <br />84% <br />82% <br />nd' Indicates not detected at listed reporting limits <br />'RL' Indicates reporting limit in ug4n3 of Vapor at a dilution factor of 1 (Methane in ppmV) <br />Analyses performed by: Mr. Leif Jonsson <br />page 2 <br />wga,n Mnnicr Park Plarca RanrM1n rnnirn,a <br />re OS7a7 . P ,M- r91R1 RED-anrn <br />c-- rorr_i m0 on�n <br />