NYC-WTC_000211402

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. Page 3 of INDOOR AIR QUALITY FIELD REPORT Time: AlH LOCATION DATE:EEE I’EOJECT NO: ^,2^7^ \ Location YXaif Occupants jj Temperature (°F) ' I Relative 7; K- Inumidily ■ Carbon Respirable vjyocs Afonoxide,®:, Tarticulate' hXppm); L(%)' 5?^ ippml ir-Y® s (ug/m’) :

"30 S “7 0.^ I 1 ZCL '70. G I 4 o o,q OA.t EEE •7|. t. •70. 1 Gro i 1 I 0 FUMIvvAm _________ ‘ 32 0 "3V/V\2- -72 rr 70 .'I nh 1 fco'S *3 S' I I u c

nr 70.5 H^.( lots 1 c ^30 Ei VO -1 M'=l U (Y27 c

I o H K Ec 30-i 33 i Guideline levels ASIIRAE/AIHA hl - vo.^ 705 68-75”E/winter 73-79 °F/sunimer 47 I

30-60% t?(O

Outdoor level + 700 ppni . 9 ppm Ox 11 65 ug/m^ 1 ppm

S Comments: o o o riic assessed loca(ioii(s) ( ) Does () Does not meet established indoor air quality guidelines. Io Date: 5/^^ CO Signature:^ cn

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NYC-WTC_000211404