Air sample lab report, Broadway and 31st St, Oct 2001

NYC 9/11 Public Portal Document PEDNEAULT ASSOCIATES HAGE 14 10/22/2001 17:08 6314678305

L Prepared Edclusivety For: PJEDN^AUJLTASSOCIATJES, INC. NYCDEP-Emergency Response & Tech Assmt. UtS NINTH AVENUE. BOX2C5. BOHEMIA, N.Y. 11716 96-05 Horace Harding Expressway LAB#: 01100399 Corona , NY 11368 PROJECT ro WORLD TRADE CENTER- 5 Boro Sampling (718)595-4650 MATRIX; AIR\GAS

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COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE lO/ID/O: 6:00 PM 10/19/01 9:50:00 PM 10/22/01 10/22/01 SAMPLE ORIGIN DUP/138th St. & 3rd AVENUE, BRONX SAMPLE K)#: 01100399-007 RESULT UNITS MD.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.96 ppb v/v 0.123 USEPA TO-15 10/21/01 Chloromethane 0.95 ppb v/v 0.1037 USEPA TO-15 10/21/01 1,2-Dichlorotetrafluorciefhane ND ppb v/v 0.2886 USEPA TO-15 10.^21/01 Vinyl Chloride ND ppb v/v 0.1249 USEPA TO-15 10,21/01 Bromomethane ND ppb 0.2418 USEPA TO-15 10/21/01 Chloroethane ND ppb y/v 0.2478 USEPA TO-15 10/21/01 Trichlorofluoromethana 0.42 ppb 0.1839 USEPA TO-15 10/21/01 1,1-Dlchloroethene ND ppb v/v 0.0799 USEPA TO-15 10/21/01 Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 10/21/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/21/01 1,1-Dichlorosthane ND ppb v/v 0.1398 USEPA TO-15 10/21/01 Methyl-tert-buty! ether 6.00 ppb v/v 0.128 USEPA TO-15 10/21/01 cis-1,2-Dichloroethene ND ppb v/v 0.1783 USEPA TO-15 10/21/01 Chloroform ND ppb v/v 0.1661 USEPA TO-15 10/21/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 10/21/01 1.1,1-Thchloroethane ND ppb v/v 0.0974 USEPA TO-15 10/21/01 Benzene 2.90 ppb v/v 0.1201 USEPA TO-15 10/21/01 Carbon Tetrachloride 0.10 ppb v/v 0.0922 USEPA TO-15 10/21/01 1,2-Dlchloropropane nd / ppbv/v 0.1138 USEPATO-15 10/21/01 Trichloroethene ND ppb v/v 0.1329 USEPA TO-15 10/21/01 cis-1,3-DlchlorQpropene ND ppb v/v 0.0924 USEPA TO-15 10/21/01 trans-1,3-DIchloropropene ND ppb v/v 0.1222 USEPA TO-15 10/21/01 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 10/21/01 Toluene 5.15 ppb V/V 0.0735 USEPA TO-15 10/21/01 1,2-Dlbromoethane ND ppb v/v 0.0971 USEPA TO-15 10/21/01 Tetrachloroethene 0.12 ppb 0.0845 USEPA TO-15 10/21/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/21/01 Ethylbenzene 0.78 ppb v/v 0.0744 USEPA TO-15 10/21/01

John Pedneault Page 13 of 16 Nri=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 WV,/BE #46075

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