NYC-WTC_000187416

NYC 9/11 Public Portal Document

09/26/2001 17:39 6314676905 PEDNEAULT ASSOCIATES PASE 15

Prepai'ed Exclusively For: PEDNEAULTASSOCIATES, INC. I6IS mmAVFNUl. BOX205. BOffEMJA. N T. 11716 NYCDEP-Emergency Response & Tech Assmt. 96-05 Horace Harding Expressway LAB#: 01090292 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Air Sampling (718) 595-4650 MATRIX: AIRGAS

COLUECT DATE DATE RECEIVED RELEASE DATE REPORT DATE 9/21/01 9;30PM 9/22/01 / ; 9/23/01 7 9/23/01

SAMPLE ORIGIN CENTAL PARK N. & LENOX .MANHATTAN SAMn^EID#: 01090292-003 RESULT UNITS mJJJ- METHOD ANALYSIS DATE Dlchlorodlftuoromothane 0.65 ppb vA/ 0.123 USEPA TO-15 9/23/01 Chloromethane 1.19 ppb v/v 0.1037 USEPA TO-15 9/23/01 1,2-Dlchlorotetrafluoroethane ND ppb v/v 0.2386 USEPA TO-15 9/23/01 Vinyl Chloride ND ppb v/v 0.1249 USEPA TO-15 9/23/01 Bromomethane ND ppb v/v 0.2418 USEPA TO-15 9/23/01 Chloroethane ND ppb v/v 0.2478 USEPA TO-15 9/23/01 T richlorofluoro methane 0.55 ppb v/v 0.1839 USEPA TO-15 9/23/01 1.1 -Oichloroethene ND ppb v/v 0.0799 USEPA TO-15 9/23/01 Methylene chloride ND ppb v/v 0.1909 USEPA TO-15 9/23/01 Freon 113 ND ppb v/v 0.161 USEPA TO-15 9/23/01 1,1-Dlchloroethane ND ppb v/v 0.1398 USEPATO-1S 9/23/01 Methyl-tert-butyl ether 3,44 ppb v/v 0.128 USEPA TO-15 9/23/01 C13-1,2-Dichloroethene ND ppb v/v 0.1783 USEPA TO-15 9/23/01 Chlorolornn ND ppb v/v 0.1681 USEPA TO-15 9/23/01 1,2-Dichloroethane ND ppb v/v 0.1688 USEPA TO-15 9/23/01 1,1,1-Trichloroethane ND ppb v/v 0.0974 USEPA TO-15 9/23/01 Benzene 1.42 ppb v/v 0.1201 USEPA TO-15 9/23/01 Carbon Tetrachloride 0.11 ppb v/v 0.0922 USEPA TO-15 9/23/01 1.2-Dichloropropane ND ppb v/v 0.1138 USEPATO-1S 9/23/01 Trichloroethene ND ppb v/v 0.1329 USEPA TO-15 9/23/01 clG-1,3-Dlchloropropene ND ppb v/v 0.0924 USEPA TO-15 9/23/01 trans-1.3-Dichloropropeno ND ppb v/v 0.1222 USEPA TO-15 9/23/01 1.1.2-Trichloroethane ND ppb v/v 0.0896 USEPA TO-15 9/23/01 Toluene 3.66 ppb v/v 0.0735 USEPA TO-15 9/23/01 1.2-Dibromoethane ND ppb v/v 0.0971 USEPA TO-IS 9/23/01 Tetrachloroethene 0.53 ppb v/v 0.0845 USEPA TO-15 9/23/01 Chlorobenzene ND ppb v/v 0.1343 USEPA TO-15 9/23/01 Ethylbenzene 0.74 ppb v/v 0.0744 USEPA TO-15 9/23/01

John Psdneault Page 5 of 14 ND=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

CITY_21MC100_002952567

NYC-WTC_000187420