HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document 2.2 Mechanical Exhaust Systei Isual Inspection Form Mechaaia~ EAaust System Identification Page 1 of 1 rtv a rs~+lc.+ti. 1t4(",5 t* u -i'~ J Ucation: Location: Area Set Ved: 7f ih N ~eF — 3 o o A1.(;A NY E7 Associated mechanical room: clean Y N dry Y N stored chemical Y N System Components surface Component F INOTE: If component not present (NP), not found (Ni) or inaccessible (1) please Dust/ WTC • not present ' Debris Dust • not found Indicate In last column] I Present? Present? • Exhaust air outlet: Location: inaccessible

Accessible for inspection? Y V N el):

— louvers, 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 attenuators — blower housing acoustical lining — vibration collars JP Exhaust air distribution: ?P — Exhaust air ducts Est. total in ft .1.0 O No. locations inspected 7. Sped 1 e (circle): l s ued me t uv fibrous slam board lex Ct woo —Accessible in-line fire dampers Ea total qty ' I No. locations inspected — Accessible t►uraing vanes NP Est. total qty No. locations inspected —Exhaust air grilles P4P Est. total city No. locations inspected . • Other (specify):

Other Information:

General impression indicate recommendations for cleaning based on finding of Wit dust): -- j'7"G V£LATLD DUST WAS 0 3SEAV£3) to i9N ACLU 17 eo N~ At~l„1~ ff5 ,%.5SvC4P!•7~D vc75

O LE 4 t q i , qo t FDR Wit WJ TE D 7Dvsr. N.CU 1T$ G.Ett4 T 4{t~ f, AU S1 TAN . ITS 0-vM?opEN7S ASso4 h'~~ oc7 S.

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

NYC-WTC 000135427