NYC-WTC_000198950

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC. Page of TIME INDOOR AIR QUALITY FIELD REPORT

LOCATION P58A M DATE <3/56 PROJECT NO. tqias- I Tin I wRelaliv mil Diinidi Cai lalde dilvC (ppm) es(im/ili') nrii ■IS

3og Ch^ii ) 70.3 ?3.5 HTO 0 17 O

3io 7(.o Me T- 0 18 O

3l M c MA), 1 7c.- 53-4 4C7 O O

31C A 7o.y ?5. I H83 o 17 o

33-S o 17 0

351 33 6 468 o 17 O

3.3g Ch^ ”•) 33. 6 MTM O o

33 o 71.3 53 8 loi O /7 o

33 7 18 71.$ 24-1 SS3 O (3 o

___ L_ 71.G ■53.3 3(T60% Outdoor level + 6) 9 ppm (C 65 ug/m^ o 1 ppm Q Guideline levels 68 -VST/winter H ASHRAE/AIHA/EPA 73 -79’F/summer 700 ppm 24-hour average 8 I—i s o Comments; o o Io The assessed location(s) () Does () Does not meet established indoor air quality guidelines. o OS

co Date: 3ZJi4/c>i Signature: co OS co

NYC-WTC_000198956