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

NYC 9/11 Public Portal Document 10/22/2001 17:08 6314676905 PEDNEAULT ASSOCIATES PAGE 16

[ 1 Prepared Exclusivtly For; PEDNEAULTASSOCIATES, INC. NYCDEP-Emergenc/ Response & Tech Assmt 1615 WNTHAVSNUE, 80X205. BOJfEMIA. N.YH7I6 96-05 Horace Harding Expressway LAB#: 01100399 Corona , NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX; AIRIGAS

collect DATE DATE RECEIVED RELEASE DATE REPORT DATE 10/19/0: 3:30 PM 10/19/01 9:50:00 PM . 10/22/01 10/22/01 SAMPLE ORIGIN TRIPBIANKS SAMPLE ID#! 01100399-008 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane ND ppb v/v 0.123 USEPA TO-15 10/21/0] Chloromethane ND ppb vN 0.1037 USEPA TO-15 10/21/01 1,2-Dichlorotelrafluoroethane 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 Bromcmethane ND ppb v/v 0.2418 USEPA TO-15 10/21/0) Chloroethane ND ppb v/v 0.2478 USEPA TO-15 10,21/01 T richlorofluoromsthane ND ppb v/v 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-Dichloroethane ND ppb v/v 0.1398 USEPA TO-15 10/21/01 Methyl-tert-butyl ether ND ppb VA/ 0.128 USEPA TO-15 10/21/01 cls-1,2-Dichloroethenei ND ppb v/v 0.1783 USEPA TO-15 10/21/01 Chloroform ND ppb v/v 0.1681 USEPA TO-15 10/21/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 10/21/01 1.1,1-Trichloroelhane ND ppb v/v 0.0974 USEPA TO-15 10/21/01 Benzene ND ppb v/v 0.1201 USEPA TO-15 10/21/01 Carbon Tetrachloride ND ppb v/v 0.0922 USEPA TO-15 10/21/01 1,2-Dichloropropane ND ppb vAr 0.1138 USEPA TO-15 10/21/01 Tri chloroethene ND ppb v/v 0.1329 USEPA TO-15 10/21/01 cis-1,3-Dichloropropene 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 vl'j 0,0896 USEPA TO-15 10/21/01 Toluene ND ppb v/v 0.0735 USEPA TO-15 10/21/01 1,2-Dibromoethane ND ppb v/v 0.0971 USEPA TO-15 10/21/01 Tetrachloroethene ND ppb v/v 0.0845 USEPA TO-15 10/21/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/11/01 Ethylbenzene ND ppb v/v 0.0744 USEPA TO-15 10/11/01

John Pedneault Page 15 of 16 N1>=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS FLAP #10224 MJVBE #46075

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