NYC-WTC_000203356

NYC 9/11 Public Portal Document

. [ 1 Prepared Exclii.<;ive!y For: PEDNEAULTASSOCIATES, INC. NYCDEP-Emergency Response & Tech Assmt. J6I5 ff/fm/AVENUE. BOX205^ BOHEMIA. N.Y. II7I6

96-05 Horace Harding Expressway LAB#: 01100508 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 10/28/01 7:13 PM 10/28/01 9:54:00 PM 10/30/01 10/30/01

SAMPLE ORIGIN DUP/-ATLANTIC AVE. & SMITH ST., BROOKLYN SAMPLE in#: 01100508-007 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.66 ppb v/v 0.123 USEPA TO-15 10/29/01 Chloromethane 0.64 ppb v/v 0.1037 USEPA TO-15 10/29/01 1,2-Dichlorotetrafluoroethane ND ppb v/v 0.2886 USEPA TO-15 10/29/01 Vinyl Chloride ND ppb v/v 0.1249 USEPA TO-15 10/29/01 Bromomethane ND ppb v/v 0.2418 USEPA TO-15 10/29/01 Chloroethane ND ppb v/v 0.2478 USEPA TO-15 10/29/01

( Trichlorofluoromethane 0.19 ppb v/v 0.1839 USEPA TO-15 10/29/01 1,1-Dichloroethene ND ppb v/v 0.0799 USEPA TO-15 10/29/01 Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 10/29/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/29/01 1.1-Dichloroefhane ND ppb v/v 0.1398 USEPA TO-15 10/29/01 Methyl-tert-butyl ether 0.52 ppb v/v 0.128 USEPA TO-15 10/29'01 j cis-1,2-Dichloroethene ND ppb v/v 0.1783 USEPA TO-15 10/29/01 ! Chloroform ND ppb v/v 0.1681 USEPA TO-15 10/29/01

! 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 10/29/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPA TO-15 10/29/01 Benzene 0.23 ppb v/v 0.1201 USEPA TO-15 10/29/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPA TO-15 10/29/01 1,2-Dichloropropane ND ppb v/v 0.1138 USEPA TO-15 10/29/01 Trichloroethene ND ppb v/v 0.1329 USEPA TO-15 10/29/01 cis-1,3-Dichloropropene ND ppb v/v 0.0924 USEPA TO-15 10/29/01 trans-1,3-Dichloropropene ND ppb v/v 0.1222 USEPA TO-15 10/29/01 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 10/29/01 Toluene 0.44 ppb v/v 0.0735 USEPA TO-15 10/29/01 1,2-Dibromoethane ND ppb v/v 0.0971 USEPA TO 15 10/29/01

Tetrachloroethene ND ppb v/v 0.0845 USEPA TO-15 10/29/01

Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/29/01 I Ethylbenzene 0.08 ppb v/v 0.0744 USEPA TO-15 10/29/01

John Pedneault Page 13 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS FLAP #10224 NR=NON REPORTABLE RESULTS MWBE #46075

CITY_21MC1OO_OO3O71397 NYC-WTC_000203368