NYC-WTC_000187239

NYC 9/11 Public Portal Document

10/16/2001 14:48 6314676305 PEDNEAULT ASSOCIATES PAGE 08

Prepared Exclusively For: rEDNEAULT ASSOCIATES, INC. NYCDBP-Emergency Response & Tech AssmL 1615 NINTH AVENUE, BOX205, BOHEMIA, NA. H7I6 96-05 Horace Harding Expressway LAB#: 01100281 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-1650 MATRIX: AIR\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 10/14/0; 7;30PM 10/14/01 9:45;00 PM 10/16/01 10/16/01 SAMPLE ORIGIN BERRY ST. & NORTH 11th ST, BROOKLYN SAMPLE ID#; 01100281-004 RESULT UNITS M-D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 1.17 ppb v/v 0.123 USEPA TO-15 10/15/01 Chloromethane 1.33 ppb v/v 0.1037 USEPATO-15 10/15/01 1.2-Dichlorotetrafluoroethane ND ppb v/v 0.2888 USePATO-15 10/15/01 Vinyl Chloride ND ppb v/v 0.1249 USEPATO-15 10/15/01 Bromomethane ND ppb v/v 0.2418 USEPATO-15 10/15/01 Chbroethane ND ppb v/v 0.2478 USEPATO-15 10/15/01 Trichlorofluoromethane 0.56 ppb v/v 0.1839 USEPATO-15 10/15/01 1,1-Dichloroethene ND ppb v/v 0.0799 USEPATO-15 10/15/01 Methylene chloride ND ppb v/v 0.1909 USEPATO-15 10/15/01 Freon 113 ND ppb v/v 0.161 USEPA TO-IS 10/15/01 1.1-Oichloroeihano ND ppb v/v 0.1398 USEPATO-15 10/15/01

Methyl-tert-butyl ether 7.15 ppb v/v 0.128 USEPATO-15 10/15/01 cis-1,2-Dichloroethene ND ppb v/v 0.1783 USEPATO-15 10/15/01 Chtorofbrm ND ppb v/v 0.1681 USEPATO-15 10/15/01 1,2-Dlchloroethane ND ppb v/v 0.1688 USEPATO-15 10/15/01 1,1,1 -Ttichloroethano ND ppb v/v 0.0974 USEPATO-15 10/15/01 Benzene 0.83 ppb v/v 0.1201 USEPATO-15 10/15/01 Cartjon T otrachtoride 0.14 ppb v/v 0.0922 USEPATO-15 10/15/01 1,2-OlchlQrapropane ND ppb v/v 0.1138 USEPATO-15 10/15/01 Trichloroethene ND ppb v/v 0.1329 USEPATO-15 10/15/01 cls-l ,3-DlchloTOpropeno ND ppb v/v 0.0924 USEPATO-15 10/15/01 trans-l ,3-Dichloropropene ND ppb v/v 0.1222 USEPATO-15 10/15/01

1.1,2-Trichloroethane ND ppb vA/ 0.0896 USEPATO-15 10/15/01 Toluene 4.94 ppb v/v 0.0735 USEPATO-15 10/15/01

1.2-Dibromoethane ND ppb v/v 0.0971 USEPATO-15 10/15/01 Tetrachloroethene 0.14 ppb viv 0.0345 USEPATO-15 10/15/01 Chlorobenzene ND ppb v/v 0.1343 USEPATO-15 10/15/01 Ethylbenzene 0.98 ppb v/v 0.0744 USEPATO-15 10/15/01

John Pedneault Page 7 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

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