HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 2-2 Machaniral Fv henat System Visual Jnsnectinn Form Pate 1 of 1 Mechanical Exhaust Systen Idesa5cation tc A ICAL £xk4VST Location: Area Served `U PPE K ` ooc — 9. sovrh E~ro A soc1ated. mechanical roos n: clean„/ / Y N dry-zY stored chemicals/refuse N Y.4 Durta~ Component System Components Dust/ WTC • not ps~setnt [NOTE: €f component not present (NP), not found (NF) or inaccessible (I) please Debris Dust • not found indicate in last column) Present? Present? • inaccessible Exhaust air outlet: Location:

Accessible for inspection? t t~ N (explain): . Y y — louvers, grates and/or eens — outside alr duct — outside air dampers) y Exhaust fan unit: — blower assembly incl.1:dower wheel, housing, air vanes, in-line noise attenuators — blower housing acoust :al lining I — vibration collars Exbauat air distribution: — Exhaust air ducts Est total In ft 100 No. locations inspected, C2_ Spey type (circle): i,! l sous slasc lined mets3 ~ ) fbrotts 2;ass board

—Accessible in-line fire da ipers Est. tout q y 't_ No. locations inspected Accessible turning vanes Est. total qty No. locations inspected - Exhaust air grilles Est total qty • No. locations inspected Other (specify):

Other Information:

General impression (ludic: ;..e recommendations for cleaning based on finding of Wit dust):

... W , C -`~V ST W AS C''6SE'- S -ç / N T44E 4 fc#4A UICAL CO$4 PCNE-~J1 S N., AN„~ 17SS. A"POAte-z Mucrs,

.~ t N!Nfij is 4v t De t+V'r: `PELA D Tus( Tic NFGHAP'C4L etupVNE-1u7,T bt y-t TAN ,ApJj in 4Zoc4# 1 sj %CYC lU . N r • "To *M Oi- -4 N&,D

KEY: NT = not present; N = not found; I = inaccessible; I - unknown

NYC-WTC 000135389