HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document Ventilation System Identification: Page 1 of 2 • AC• -1 , Location: n n Area Served: ELEVA — G`~ 2D, 3~S&~ci~+9 PLAC tL r t'A7(f. &iy • Associated mechanical room: clean ~Y N dry Y N stored chemicals/refuse Y• j N System Components Surface Canponent (NOTE: if component not present (NP), not found Debr) Dust • not present ( ') or inaccessible (1) please Dust . not found indicate in last column] Present? n.,ae:ae o:,.:—~..i... • _ --• Present? • insecessrhk

Accessible for inspection? Y_/N_ (explain):

— louvers, grates and/or screens — outside air duct — outside air danwer(s)

— outside air mixing chamber - filter racks) — filter media N — blower assembly incI. blower wheel, blower housing, air vanes, in-line tiJ noise attenuators — blower housing acoustical lining — pre-heat coils r +~ — heating coils r — cooling coils fsj — re-heat coils Ni — condensate drain pan — supply air plenum — supply air plenum damper(s) — vibration collars

— Supply air ducts Est. total In ft z No. locations inspected Specify type (circle): fibrous Was IinedmetaT~,:may bus glass board

— Accessible in-line .fire dampers Est total qty No. locations inspected N — Accessible turning vanes Est. total qty No. locations inspected ftj — In-line reheaticooling coils Est. total qty No. locations inspected ?'4 t — Supply air diffusers Est total qty ( No. locations inspected I V ki

—Return air ducts Est. total In ft No. locations inspected % Specify type (circle): ! fibrous class lined metal masomv fibrous Blass board flex-duct d — Return air plenum Est. total RA plenum areas 1 No. locations inspected. — Return air plenum damper Est. total qty No. locations inspected — ' Accessible in-line fire dampers Est. total qty No. locations inspected — Accessible turning vanes W Est. total qty No. locations inspected — Return air grilles Est. total qty No. locations inspected y N

NYC-WTC 000135504