NYC-WTC_000199019

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. l’age of B TIME hcC INDOOR AIR QUALITY FIELD REPORT

LOCATION PS/IS89M DATE 31 I ?/c c PROJECT NO.

Location Occup. Temperature Relative Carbon Dioxide Carbon Monoxide Respirable TVOCs ("F) Humidity (%) (ppm) (ppm) Particulates(ug/m^) (ppm)

Gy too - - 49 39 9 C3! o o ■ c' 9 Te L 38.4 6 5S 2 IB <” c

310 2> c i 8- •Y It c- ■ c-

- > IM ( w n IJ C2N

^l 73 I ^9 j 6/7 3

3QC le 35-.B 65^ :Y 8 o. t >

•B' 2 c•c

77 8 77 3 2 678 32

33c 773 ’9 2 C •7 C ('

V Iqy GrCvCnfl N __ 73 g 40 9 414 ______ .________ C, r; GiSdeline levels 68 -TST/vvinter 30-60% Outdoor level + 9 ppm 65 ug/in I ppin ASHRAE/AIHA/EPA 73 -79®F/summer 700 ppm 24-hour average o H 1"^ Coinincnts: I—i s o o The assessed location(s) () Does () Does not meet established indoor air quality guidelines. o I o o OS Signature: Dnte: 5'//?/u< - co so OS

OS

NYC-WTC_000199025