HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document

2.2 Mechanical Exhaust System Visual Insnectinn Form Pea. 1 of 1 Mechanical Exhaust System Identification: ;R. E WAUS1 Location Area Served: 5n5 o fi&ivj P..oOF '' n,zQY ,r Associated mechanical room: clean Y N dry Y N stored chemicals/refuse Y N Surface Component System Components Dust/ WTC • not present [NOTE: if 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? Y ~ N (explain): `

— louvers, grates and/or screens — outside air duct — outside air damper(s) Exhaust fan unit: jP — blower assembly incl. blower wheel, housing, air vanes, in-line noise attenuators — blower housing acoustical lining N7 — vibration collars N Exhaust air distribution: — Exhaust air ducts Est. total In ft tF3) No. locations inspected Specify type (circle): b ous lass lined eus + fibrous class board ) fl ex -duct wood — Accessible in-line fire dampers Est. total qty No. locations inspected _ (J P — Accessible turning vanes — Exhaust air grilles Est. total qty Est. total qty No. locations inspected N 1 No. locations inspected N r Other (specify):

Other Information: E, HAt)ST JEE11S <cCuLFI'~ % NCZ-

General impression (indicate recommendations for cleaning based on finding of WTC dust):

-- No WTC 2ELA1 WAS o -B.30 VED IN T+4£ cdr~PONENTs T .'ST 0 T4' E K4{ AU5T 14lJ. t.5 EQ u t~ E-1~ FoR VJ?'G 1 CLA?E1r \JE ppp 1

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

NYC-WTC 000135525