NYC-WTC_000187581

NYC 9/11 Public Portal Document

10/04/2001 17:20 6314676905 PEDNEAULT ASSOCIATES PAGE 14

Prepared Exclusively For: PEDNEAULTASSOCIATES, INC. NYCDEP-Emergency Re; ponse & Tech Assmt. 161! NINTH AVENUE. BOX205. BOHEMA. N.Y. 11716

96-05 Horace Harding Expressway LAB#: 01100065 Corona NY 11363 PROJECT ID WORLD TRADE CENTERS Boro Sampling (718) 595-4650 MATRIX: AIR\GAS

COLLECT DATE date RECEIVED RELEASE DATE REPORT DATE 10/2/01 8:25 PM 10/3/01 1:10:00 AM 10/4/01 10/4/01

Sample origin issth st. & 3rd avenue, Bronx SAMPLE ID#: 01100065-002 RESULT UNITS M.P.L. METHOD ANALYSIS DATE Dichlorodifluoromethane 0.76 ppb v/v 0.123 USEPATO-15 10/3/01 Cbloromethane 0.64 ppb v/v 0.1037 USEPATO-15 10/3/01 1,2-Dichlorotetrafluoro0than9 ND ppb v/v 0.2086 USEPATO-15 10/3/01 Vinyl Chloride ND ppb v/m 0.1249 USEPATO-15 10/3/01 Bromomethane ND ppb v/v 0.2418 USEPA TO-15 10/3/01 Chloroethane ND ppb v/v 0.2478 USEPATO-15 10/3/01 Trichlorofluoromethane; 0.30 ppb v/v 0.1839 USEPATO-15 10/3/01 1,1-Dichloroethene ND ppb v/v 0.0799 USEPA TO-15 10/3/01 Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 10/3/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 10/3/01

1,1-Dichloroethane ND ppb v/v 0.1396 USEPATO-15 10/3/01 Methyl-tert-butyl ether 9.16 ppb v/v 0.128 USEPA TO-15 10/3/0) ci3-1,2-Dlchloroelhene ND ppb v/v 0.1783 USEPA TO-15 10/3/01 Chloroform ND ppb v/v 0.1681 USEPATO-15 10/3/01 1,2-Dichloroethane ND ppb yjiv 0.1688 USEPATO-15 10/3/01 1,1,1-Trlchloroethane ND ppb v/v 0.0974 USEPA TO-15 10/3/01 Benzene 2.48 ppb v/v 0.1201 USEPA TO-15 10/3/01 Carbon Tetrachloride 0.13 ppb viv 0.0922 USEPATO-15 10/3/01 1,2-Dichloropropane ND ppb vN 0.1138 USEPATO-15 10/3/01 Trichloroothene ND ppb v/v 0.1329 USEPA TO-15 10/3/01 j ci6-1,3-Dich1oroproperiG ND ppb v/v 0.0924 USEPATO-15 10/3/01 , trans-1,3-Dichloroproperie ND ppb 'jN 0.1222 USEPATO-15 10/3/01 i 1,1,2-Trichloroothane ND ppb uN 0.0896 USEPA TO-15 10/3/01 ! Toluene 6.83 ppb v/v 0.0735 USEPATO-15 10/3/01 1,2-Dibromoethan0 ND ppb v/v 0.0971 USEPATO-15 10/3/01 Tetrachloroethene 0.37 ppb 'Jh 0.0845 USEPA TO-15 10/3/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 10/3/01 Ethylbenzene 1.01 ppb v/v 0.0744 USEPATO-15 10/3/01

John Pedneault Page 3 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NTS ELAP (*10224 MWeE #46075

CITY_21MC100_002968633 NYC-WTC_000187583