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Document / 66 pages

Invoice for HVAC consulting services, April-May 2003

Machine-extracted title · confidence 95%

Invoice submitted for professional engineering services related to HVAC consulting and oversight of World Trade Center evaluation and cleaning.

NYC-WTC_000133898–000133963
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Scanned page image, NYC-WTC_000133918
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NYC 9/11 Public Portal Document - . . _ - • •w•." t• A• IY M A-V M*I• A._Nf iaYM.42r.-VVt IMi tl.

C,ther nfor;natioa: Unat cycled pnor to inspection ,- Color of dust/dirt/debris' Filter loading (genera) pression) ' Waterdamage iltgr bypass (describe) . • ?' Visible'suspect mold growth. Abradedfdelaminated acoustical lining • Evidence. of antmal.incursiori (carcasses, feathers,Iecal matter General Impression

2.2 Fan 'coil! heat pump units in common spaces

Ventilation System Identification: Location: Access adequate fo1 inspecton of components: •Dust/Dlrt/Debrls Sus p t 1N7C-)Ze1ated Dust System Component • None "' ' Light Heavy Present?. estimate % of total dust Substrate Material' (<1/16 inch (a 1/16 inch (YIN) loading (sheet metal wrapped) ' depth) depth System Components (sheet metal lined) (fiberglass)" • , (flexible connector) • (double walled) • • Return air grille .Return air plenum Filter-lack Filter media Blower assemtlly' Thermal coils ' Supply'air plenum • . ' Supply air diffuser' Other Information: . •.Unit cycled prior to inspection • ' Color of Dust/DirtfDebris Filter loading (genera) impression) Water damage Filter bypass (describ) Vitible suspect mold growth" Abradeii/delaminated acoustical lining _ Ev idernceof .. animal incursion (carcasses, feathers, fecal matter) General lmpression: .

2.3 . Central ventilation systems

Ventilation S stem Identif cation: • , Jl~t_. ( LaL wAL - Location: TN Fl. Area Served: . Mechanical room: clean Y N, • dry .,Y N stored chemicals/refuse •. Y N Access adequate for inspection of components: ' AHU interior surfaces are visibly accessible: ' .

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NYC-WTC_000133918Source: NYC Law Department, mirrored locally

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NYC-WTC_000133762 · Box DEP Box 55

Cole Consulting identifies impacted HVAC units at 50 [Street] requiring cleaning due to WTC dust found during a February 2003 inspection.

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