HVAC Inspection Report 257 Water Street, Nov 2002

NYC 9/11 Public Portal Document

. 23 C!ntralti~entilation systemi~C4 jTACHIMENT.A—= SCOPE OF WORK

' Dust/Dirt/Debris • Suspect \YTC-Related Dust - Estimate %•of total dust I loading System Light Heavy Component . • '(<1/16 inch 1/16 inch Present? System Components Substrate Material None depth) • depth (YIN) Outside air intake louvers, grates and/or screens • ' Outside air duct` . Outside air dampers) • 7. Return air grilles' ' Return airplenum'. Return air plenum damper Return air ducts 'Turning vanes Mixing chambers ... Filter rack(s) :; . Filter banks/media ' . Pre-heat coils Cooling coils +~( Re-heat coils Humidificationand/or air'cleaning .equipment • Fire dampers In-line re-heat coils ' Acoustical blower housing lining Duct connectors Blower assembly including blower wheel, blowerh'ousing, air vanes, in- ,. . line noise attenuators, acoustical treatments (e.g..baffies, duct linings) • . Condensate drain pan Condensate'accumulator - Supplyair plenum Supply air'plenum damper(s) Supply air ducts -High pressure -main trunk -Low pressure — blanches • • Supply plenum or supply duct linings ' Supply air duct dampers) • •• Supply air diffusers Terminal-boxes •, Open or ducted passive ventilation • shafts} Other Information: Unit cycled prior to inspection : Color ofDust/Dirt/Debris Filter loading (general impression) 4 Water damage ❑ Filter by ss (describe) Visible suspect mold growth ❑ Abraded/delaminated acoustical lining ❑ Evidence of animal incursion (carcasses, feathers, fecal matter)

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