NYC-WTC_000187430

NYC 9/11 Public Portal Document

09/2b/20ai lY □ 3146 /b90b HEDNEAULT ASSOCIATEE

[ Prepared Exclusively Tor. PEDNEAULTA SSOCIATES, INC. 1615 AVENUE. 8OXi05. BOHE/^HA. NY !CI6 NYCDEP-Ernergency Response & Tech Assmt. 96-05 Horace Harding Expressway LAB#: 01090294 Corona NY 11368 PROJECT ID WORLD TRADE CENTER ■ 5 Boro Air Sampling (718) 595-4650 MATRIX: AIR\GAS

COLLECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 9/23/01 9:10 PM 9/24/01 9/25/01 9/25/01

SAMPLE OMGIN BERRY ST. & NORTH 11th ST, BROOKLYN SyQIPUE ID#; 01090294-004 RESULT UNITS MJOJL. METHOD ANALYSISDATE Dichlorodifluoromettiane 0.53 ppb v/v 0.123 USEPA TO-15 9/24/01 Chloromethane 0.53 ppb v/v 0.1037 USEPA TO-15 9/24/01

1,2-Dichlorotatrafluoroethane ND ppb v/v 0.2886 USEPA TO-15 9/24/01 Ynyl Chlorida ND ppb v/v 0.1249 USEPA TO-15 9/24/01 Elromomethane ND ppb v/v 0.2418 USEPA TO-15 9/24/01 Chioroethare ND ppb v/v 0.2478 USEPA TO-15 9/24/01 Trichlorofluoromethano ND ppb v/v 0.1839 USEPA TO-15 9/24/01 1,1-Dlchloroethene ND ppb v/v 0.0799 USEPA TO-15 9/24/01

Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 9/24/01 FTeon 113 ND ppb v/v 0.161 USEPA TO-15 9/24/01 i——-------------------- 1,1-Dichloroethana ND ppb v/v 0.1398 USEPA TO-15 9/24/01 I Methyl-tert-butyl ether 15.7 ppb v/v 0.128 USEPA TO-15 9/24/01 j cl3-1,2-Dichloroethene ND ppb v/v 0.1783 USEPA TO-15 9/24/01 Chloroform ND ppb v/v 0.1681 USEPA TO-15 9/24/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 9/24/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 IJSEPATO-1S 9/24/01 Benzene 1.96 ppb v/v 0.1201 USEPA TO-15 9/24/01 Carbon Tatrachlorida 0.12 ppb v/v 0.0922 USEPA TO-15 9/24/01 1,2-Dichloropropane ND ppb v/v 0.1138 USEPA TO-15 9/24/01 Trlchloroethone ND ppb v/v 0.1329 USEPA TO-15 9/24/01 <;is-1,3-Dichloropropene ND ppb v/v 0.0924 USEPA TO-15 9/24/01 trans-1,3-Dichloroprop6ne ND ppb v/v 0 1222 USEPA TO-15 9/24/01 1,1,2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 9/24/01 Toluene 10.2 ppb v/v 0.0735 USEPA TO-15 9/24/01 1.2-Dibromoethane ND ppb \j/\i 0.0971 USEPA TO-15 9/24/01 I Tetrachloroethene ND ppb v/v 0.0845 USEPA TO-15 9/24/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 9/24/01 Irthyl benzene 1.88 ppb v/v 0.0744 USEPA TO-15 9/24/01

John Pedncault Page 7 of 14 XD RESVLT IS EQUAL TO OR LESS THAN MDL Lab Director VYS £L4P #10224 MWBE #46075

CITY_21MC100_008914334

NYC-WTC_000187436