NYC-WTC_000187255

NYC 9/11 Public Portal Document

10/17/2001 15:15 6314676905 PEDNEALILT ASSOCIATES PAQE 22

r ] frepared Exclustvely For: PEPNJSAULTASSOCMrJSS, INC. NYCDEP-Emergcncy Response & Tech Assmt. leiSNIHTHAVENUE. BOX20S. BOHEMTA. N.Y. U716

96-05 Horace Harding Expressway LAB#: 01100307 Corona NY 11368 PROJECT ID WORLD TRADE CENTER- 5 Boro Sampling (718) 595-4650 MATRIX: AIR\GAS I ------------------ 1— m.p-Xylene 4.29 ppb v/v 0.1785 USEPATO-15 10/16/01 Styrene 0.25 ppb v/v 0.0896 USEPATO-15 10/16/01 1,1.2,2-TetrachloroetbanQ ND ppb v/v 0.1471 USEPATO-15 10/16/01 o-Xylene 1.67 ppb v/v 0.0111 USEPATO-1S 10/16/01 1,3,5-Tilmethylbenzene 0.77 ppb v/v 0.0757 USEPATO-15 10/16/01 1,2,4-Trimethylbenzen9 2.35 ppb v/v 0.1511 USEPATO-15 10/16/01 1,3-Dlctiloroben2ene NO ppb v/v 0.1564 USEPATO-15 10/16/01 1,4-DictilQrobenzene NO ppb v/v 0.169 USEPA TO-15 10/16/01 1,2-Dictilorobenzene ND ppb v/v 0.2014 USEPATO-15 10/16/01 1,2,4-Trichlorobenzene ND ppb v/v 0.1705 USEPATO.15 10/16/01 Hexactiloto-1,3-Butadicne ND ppb v/v 0.1976 USEPATO-15 10/16/01 Tentatively Identified Compounds 10/16/01 Isobutane 1.88 ppb v/v USEPA TO-15 10/16/01 2-Methyl-1-propene 1.17 ppb v/v USEPA TO-15 10/16/01 Butane 2.88 ppb v/v USEPATO-15 10/16/01 2-Methyt butane 5.32 ppb v/v USEPA TO-15 10/16/01 Pentane 1.98 ppb \iN USEPATO-15 10/16/01 1,1 -Dimethyl cyclopropane 0.91 ppb USEPATO-15 10/16/01 Isopropyl alcohol 1.21 . ppb vN USEPA TO-15 10/16/01 i 2-Methyl Pentane 2.06 ppb vlv USEPA TO-15 10/16/01 3-Methyl pentane 1.01 ppb v/v USEPATO-15 10/16/01 2,2,4-TriinQthyl Pentane 1.61 ppb v/v USEPATO-15 10/16/01

John Pedneault Page Wot 16 NI)=RESULT IS EQUAL TO OR LESS THAN MDL Lab Director NYS ELAP #10224 MWBE #46075

CITY_21MC100_0 02966123

NYC-WTC_000187264