HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document L.t. _ ~. c_ i_ ~_ -- - - `=v = • v, a,a ~•,~•••,im rate 1 ot- 1 LU LU=U=QaUQ . — "-- ~- I CGHRNIC4L X+tkvS 1Ø4J 1J Location: / Area Sewed: i forty ~89~ ~- ~0O AZ8RNY T Associated mechanical room: clean Y N dry Y N stored chemicaishrefose Y N System Components Surface Component [NOTE: If component not P resent (NP), not found (NY+'j or inaccessible (l) please Dust( WTC • not present P ' Debris Dust indicate in last column] . not found ! Present? Present? • Exhaust air outlet: inaccessible Location: Accessible for inspection? Y Y N (explain):

— lowers, grates and/or screens — outside air duct — outside air damper(s) Exhaust fan unit: —blower assembly incl. blower wheel, housing, air vanes, in-line noise s tators — blower housing acoustical lining — vibration collars P Exhaust air distribution: — Exhaust air ducts Est total in ft ~.0 O No. locations inspected a. Specify type (fie): i ass a masonry fibrous ¢lass board

essible in-line lire dampers Est, total qty Y y No. locations inspected I P essible turning vanes NP Est. total qty No. locations inspected aust air grilles Est. total qty No. locations inspected C (specify):

Other Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust): VTC L.A'TF-D D u.ST WAS )B5 AVED FM 741E "N AMD ITS AP AWiD c - ,k tsDC. tFt rED ,'7, uc i5•

CLENt1.S4 l5 qoit4 F'oR Wit €LJzE D usr. AN, ITS ect4pNENTS N13 iTS G.£&>) '.r4 E EXHAUa7 Doe.1S.

KEY: NP - not present; NF = not found; I = inaccessible; U = unknown

NYC-WTC 000135435