NYC-WTC_000187581

NYC 9/11 Public Portal Document

10/04/2001 17:20 &314676g05 PEDNEAULT ASSOCIATES PASE 24

[ prepared Exclusively For: PEDNJSAUtTASSOCIATES, INC. NYCDEP-Emergency Response & Tech Assmt 1615 NWTfi AVENUE, BOX205, BOlfEJXM, U.K 11716

96-05 Horace Harding Expressway LAB#: 01100065 Corona NY 11368 PROJECT ID WORLD TRADE CENTER-5 Boro Sampling

(718)595-4650 MATRIX: A1R\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 10/2/01 5:00 PM 10/3/01 1:10:00 AM 10/4/01 10/4/01

SAMPLE ORIGIN TRIP BLANKS SAMPLE ED#: 01100065-007 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dlchlorodifluoromothane ND ppb v/v 0.123 USEPATO-15 10/4/01

Chloromethane ND ppb v/v 0.1037 USEPATO-15 10/4/01 1,2-Dlch(oro(etrafluoro«than0 ND ppb v/v 0.2886 USEPATO-15 10/4/01 Vinyl Chloride ND ppb v/v 0.1240 USEPATO-15 10/4/01 Bromomefhane NO ppb v/v 0.2418 USEPATO-15 10/4/01

Chloroethane ND ppb v/v 0.2478 USEPATO-15 10/4/01 Trichlorofluoromethane ND ppb v/v 0.1839 USEPATO-15 10/4/01

1,1-Dichloroethene ND ppb v/v 0.0799 USEPA TO-15 10/4/01

Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 10/4/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/4/01

1.1-Dlchloroethane ND ppb v/v 0.1398 USEPATO-15 10/4/01

Methyl-tert-butyl ether ND ppb v/v 0.128 USEPA TO-15 10/4/01 cis-1,2-Dichloroethen0 ND ppb v/v 0.1783 USEPA TO-15 10/4/01

Chloroform ND ppb v/v 0.1681 USEPA TO-15 10/4/01

1,2-Dichloroethane ND ppb v/v 0.1688 USEPATO-15 10/4/01 1.1,1-Trichloroethane ND ppb v/v 0.0974 USEPATO-15 10/4/01 Benzene ND ppb v/v 0.1201 USEPATO-15 10/4/01

Carbon Tetrachloride ND ppb v/v 0.0922 USEPATO-15 10/4/01

1.2-Dlchloropropane ND ppb v/v 0.1138 USEPATO-15 10/4/01

Trichloroethene ND ppb v/v 0.1329 USEPA TO-15 10./4/01

cls-1,3-Dlchloropropene ND ppb v/v 0.0924 USEPATO-15 10/4/01 tran3-1,3-Dlchloropropen = ND ppb v/v 0.1222 USEPATO-15 10/4/01 1.1,2-Trichloroethane ND ppb v/v 0.0896 USEPATO-15 10/4/01 Toluene ND ppb v/v 0.0735 USEPATO-15 10/4/01

1,2-Dibromoethane ND ppb v/v 0.0971 USEPA TO-15 10/4/01

Tetrachloroethene ND ppb v/v 0.0345 USEPATO-15 10/4/01

Chlorobenzene ND ppb v/v 0.1343 USEPATO-15 10/4/01 Ethylbenzene ND ppb v/v 0.0744 USEPA TO-15 10/4/0]

John Pedneault Page 13 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

CITY_21MC1OO_OO2968643

NYC-WTC_000187593