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

NYC 9/11 Public Portal Document

10/22/2001 17:00 6314676905 PEDNEAULT ASSOCIATES 06

prepared .Exclusivel}’ For: PEDNEAULTASSOCIATES, INC. NYCDEP-Einergency Response & Tech Assmt, leisffmnfAVENUE. BOX205. bohe/j/a.nk ij7J6 96-05 Horace Harding Expressway LAB#: 01100399 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 10/19/0: 6:35 PM 10/19/01 9:50:00 PM 10/22/01 10,22/01

SAMPLE ORIGIN CENTAL PARK N. & LENOX, MANHATTAN SAMTLE ID#: 01100399-003 RESULT UNITS M.D.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.71 ppb v/v 0,123 USEPATO-15 10/21/01 Chloromethane 0.74 ppb v/v 0.1037 USEPATO-15 10/21/01 1,2-Dichlorotetrafluoroethane ND ppb v/v 0.2886 USEPATO-15 10/21/01 Vinyl Chloride ND ppb v/v 0.1249 USEPA TO-15 10/21/01 Bromomelhane ND ppb v/v 0.2418 USEPATO-15 10'21/01 Chloroethane ND ppb v/v 0.2478 USEPATO-15 10/21/01

T richlorofluoromethane 0.30 ppb v/v 0,1839 USEPATO-15 10/21/01 1.1-Dichloroethene ND ppb v/v 0.0799 USEPATO-15 10/21/01 Methylene chloride ND ppb v/v 0.1909 USEPATO-15 10/21/01 Freon 113 ND ppb v/v 0.161 USEPATO-15 10/21/01 1,1-Dichloroethane ND ppb v/v 0.1398 USEPATO-15 10/21/01 Methyl-tert-butyl ether 3.13 ppb v/v 0.128 USEPA TO-15 IO.'21/OI cis-1,2-Dlchloroethene ND ppb v/v 0,1783 USEPA TO-15 lO-^l/Ol Chloroform ND ppb v/v 0,1681 USEPATO-15 10/21/01 1,2-Dlchloroethane ND ppb v/v 0.16Q8 USEPA TO-15 10/21/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPATO-15 10/21/01 Benzene 1.39 ppb v/v 0.1201 USEPA TO-15 10/21/01 Carbon Tetrachloride 0.12 ppb v/v 0.0922 USEPA TO-15 10,21/01 1,2-Dichloropropane ND ppb v/v 0,1138 USEPATO-15 10,21/01 Trichloroethene ND ppb v/v 0.1329 USEPATO-15 10,21/01 cis-1,3-Dichloroproperie ND ppb v/v 0.0924 USEPA TO-15 10/21/01 tran3-1,3-Dichloropropene ND ppb v/v 0.1222 USEPATO-15 10,21/01

1,1,2-Trichloroethari6 ND ppb v/v 0.0896 USEPATO-15 10/21/01 Toluene 2.96 ppb v/v 0.0735 USEPA TO-15 10/21/01 1,2-Dibromoethane ND ppb v/v 0,0971 USEPATO-15 10/21/01 Tetrachloroethene o.ie ppb v/v 0.0845 USEPA .TO-15 10/21/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/21/01 Ethylbenzene 0.41 ppb v/v 0.0744 USEPATO-15 10/21/01

John Pedneault Page 5 of 16 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

CITY_21MC100_011107334

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