NYC-WTC_000203356

NYC 9/11 Public Portal Document

[ ] Prepared Exclusively For: PEDNEAULTASSOCIATES, TNC. NYCDEP-Emergency Response & Tech Assmt. 1615 NINTH AVENUE, BON 205, BOHEMIA. N.Y. 11716

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 REPOK1 DATE 10/28/01 10/28/01 9:54:00 PM 10/30/01 I0/30/C-1

SAMPLE ORIGIN TRIP BLANKS SAMPLE ID#; 01100508-008 METHOD RESULT UNITS M.D.L. ANALYSIS DATE Dichlorodifluoromethane ND ppb vly 0.123 USEPATO-15 10/29/01 Chloromethane ND ppb v/v 0.1037 USEPATO-15 10/29/01 1,2-Dichlorotetrafluoroethane ND ppb v/v 0.2886 USEPATO-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 USEPATO-15 10/29/01 Chloroethane ND ppb v/v 0.2478 USEPA TO-15 10/29/01 T richlorofluoromethane ND ppb v/v 0.1839 USEPA TO-15 10/29/01 1,1-Dichloroethene ND ppb v/v 0.0799 USEPATO-15 10/29/01 Methylene chloride ND ppb v/v 0.1909 USEPATO-15 10/29/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/29/01 1,1-Dichloroethane ND ppb v/v 0.1398 USEPATO-15 10/29/01 Methyl-tert-butyl ether ND ppb v/v 0.128 USEPATO-15 10/29/01 cis-1,2-Dichloroethene ND ppb v/v 0.1783 USEPATO-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 USEPATO-15 10/29/01 Benzene ND ppb v/v 0.1201 USEPATO-15 10/29/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPATO-15 10/29/01 1,2-Dichloropropane ND ppb v/v 0.1138 USEPATO-15 10/29/01 Trichloroethene ND ppb v/v 0.1329 USEPATO-15 10/29/01 cis-1,3-Dichloropropene ND ppb v/v 0.0924 USEPATO-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 ND ppb v/v 0.0735 USEPATO-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 USEPATO-15 10/29/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/29/01 i Ethylbenzene ND ppb v/v 0.0744 USEPA TO-15 10/29/01

John Pedneault Page 15 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS EU<P #10224 NR=NON REPORTABLE RESULTS MWBE #46075

CITY_21MC100_003071399

NYC-WTC_000203370