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Receiving report for HVAC consulting services, March-April 2003

Machine-extracted title · confidence 94%

City receiving report acknowledging delivery of HVAC consulting services for WTC from TAMS Consultants Inc.

NYC-WTC_000135765–000135950
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NYC 9/11 Public Portal Document

-2.3 Central entilatlon systems (coAt TACH 'IEI\T A --SCOPE OF WORK

•~'' Dus irt/De ris Suspect WT •Relate. Dust ' • .. • Estimate %f total dust • •' ' loading System • Light Heavy Component '(cl/16 inch (Z 1/16 inch Present? System Components • Substrate Material None depth) depth O'/N) Outside air intake louvers, grates and/or screens Outside air duct' utside air•ttamperrs) >t:. Retum air grilles • etutn air plenum' Return air plenum damper Return air ducts • 'Turning vanes Mixing chambers . ..• • Filter racks) ' ;• Filter banks/media Pre-heat coils - • Cooling coils • • ' Re-heat coils : Hurnidificationand/or air'cleantng •• • • equipment • • Fire dampers • • • In-line re-heat coils Acoustical blower housing lining • .

Duct connectors Blower assem , y including blower wheel, blower housing, air vanes, in- ~. . line noise enenuato-s, acoustical . - x' treatments (e.g. baffles, duct linings) . Condensate drain pan Condensate accumulator I .Supply air plenum • f ~t Supply air'plenum damper(s) Supply air ducts • • .. -High pressure - main trunk -Low pressure — branches Supply plenum or supply duct linings Supply air duct damper(s) • ' Supply air diffusers 'Terminal-boxes - Open or ducted passive ventilation • shafts) . Other Information: Unit cycled prior to inspection : Color ofDust/D .ebris aL

4 Filter loading (general impression) • Water damage Filter bypass (describe) Visible suspect mold growth Abradedldelaminated acoustical lining • Evidence of animal incursion (carcasses, feathers, fecal matter)

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NYC-WTC 000135909

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NYC-WTC_000135909Source: NYC Law Department, mirrored locally

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January 30, 2003 letter from Athenica Environmental Services regarding HVAC and environmental inspections at 250 South End Avenue.

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