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NYC 9/11 Public Portal Document By/2B/20M1 14:bS bS14b7bg05 PEDNEAUUT ASSOCIATES PAGE 10/14

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59-37 JU>4'CnON BOULEVARD LAB#: 01090230 CORONA NY 11368 PROJECT ID WORLD TRADE CENTER (718)595-6433 MATRIX: AIR\GAS 1.... ' J I tn.p-Xylane 9.59 ppb v/v 0.1785 USEPATO-15 9/19/01 Slyrene 0.19 ppb v/v 0.089A IJSFPA TO-1S 9/! 9/01 1,1,2,2-T etrachloroethane ND ppb v/v 0.1471 USEPATO.15 9/19/01 o-Xylene 3.98 ppb v/v 0.0111 USEPATO-15 9/19/1)1 i 1,3,5-Trimettiylbenzene 1.05 ppp v/v 0.0757 USEPA TO-15 9/19/01 1,2,4-Triniethyiben2cnc 3.38 ppb v/v 0.1511 USEPATO-16 9/19/01 1,3-Dichloroberizene ND ppb v/v 0.1564 USEPA TO-1S 9/19/01 i 1,4-Dichlorobenzenc ND ppb v/v 0.169 USEPATO.15 9/19/01 ; 1,2-Dichlorobenzefie ND ppb v/v 0.2014 USLPATO-1S 9/19/01 1,2,4-Tririil(iir,l>fin7fina ND ppb v/v 0.1785 USEPATO-15 9/19/01 Hex0Chloro-1,3-Butadien6 ND ppb v/v 0.1976 USEPATO-15 9/19/01 Tentatively Identified Compounds 9/19/01 I Z-Msthyi butane 7.83 ppb v/v 9/19/01 I 2-Methyl Pentane 6.01 ppb v/v 9/19/01

John Podneauit Page 10 of 14 Lab Director ND-RESULT IS EQUAL TO OR LESS THAN MDL NYS ELAP #10224 MWBE #40070

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