Fax transmission header, Jan 2000

NYC 9/11 Public Portal Document Z:s t..entrat ventttation systems tcoAt~l"1'Acri117r;1V'1.' A — Scori Vii' WORK

Dust/Dirt/Debris Suspect %YTC• elateDust Estimate %of total dust loading • System • Light Heavy Component (<1/16 inch (2 1/16 inch Present? . System Components . Substrate Material None depth) • depth (Y/N) Outside air intake louvers, grates and/or screens•. - Outside air duct'• ' Outside air, dampers) Return air grilles' Return air•plenum'. Return air plenum dampei Returri air ducts Turning vines Mixing chambers '. • . Filter rac(s) . Filter banks/media Pre-heat coils Cooling coils ' Re-heat coils Humidification and/or air cleaning . . equipment Fire dampers In-line re-heat toils. Acoustical blower housing lining Duct connectors Blower assembly including blower wheel', blowerh'ousing, air vanes, in- line noise attenuators, acoustical treatments (e.g. baffles, duct linings) Condensate drain pan { Condensate accumulator Supply air plenum Supply airplenum damper(s) Supply air ducts • • .. -High pressure -.main trunk • -Low pressure — branches Supply plenurn or supply duct linings ' Supply air duct damper(s) • Supply air diffusers 1 . Terminal-boxes, - Open or ducted passive ventilation - shaft(s) • Other Information: Unit cyc ed prior to inspection Color of Dust/Dirt/Debris Filter loading (general impression) o -u-n.t.-I 4. . Water damage O Filter bypass (describe) Visible suspect mold growth Abraded'delaminated acoustical lining D Evidence bf animal incursion (carcasses, feathers, fecal matter) '

NYC-WTC 000117666