Fax transmission header, Jan 2000

NYC 9/11 Public Portal Document A PP A rtmirL NT A - Qrn•PTI'_ flV. W(1RK pther Information: -- Unit cycled pnorlo inspection Color of dustldirt/debris' ilter lbading (general impression) -F Water damage filter bypass (describe) Visible suspect mold growth Abradedlde}aminatedaeoustical lining Evidence. of animal;incursion (carcasses, feathers, fecal matter General Impression:

2.2 ' Fan'coil/heat pump units In common spaces

Ventilation System Identification: Location: ' Access adequate for inspection of components: ' -Dust/Dfrt/Debris ' • Suspect NV'TC-Related Dust System

Component None ' • Light Heavy Present?. )estimate % of total dust Substrate 1.1aterial' . (<1/16 inch (2 I/16 inch .(Y/N) loading (sheet metal wrapped) • depth) depth System Components (sheet metal lined) . (fiberglass)' (flexible connector) . • (double walled)' • • Return air grille Return air'plenum . . Filter-rack • ' Filter media Blower assembly ' . Thermal coils ' . . - . . 0 0

. .. .

Supply air•plenum Supply air diffuser' Other Information: . Unit cycled prior to inspection. . Color of Dust/Dirt. ebris Filter loading (general -impression) Water damage • Filter bypass (describe) Visible suspect mold growth • • Abraded/delaminated acoustical lining Evidence.of animal incursion (carcasses, feathers, fecal matter) -' GereralImpression: '

2.3 Central ventilation systems

Ventilation System Identification: . w;

1L. 4L'vA - t3a M -a b4& c - NV5 Location: Area Served: . Mechanical room: clean Y dry N Y N stored chemicals/refuse ' Access adequate for inspection of components: AHU interior surfaces are visibly accessible:

NYC-WTC 000117665