HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document A YJJ\V4 V IM wbv a v. s

Passive Shaft/lluct Identification: .

Location: .-, - 30o AL NI f- Area ed: 4~V.D1?- ' —' S ____ _______

Surface Component System Components Dust! WTC . not present [NOTE: If component not present (NP), not found (NF) or Inaccessible (1) please Debris Dust . not found indicate in last columnl- Present? Present? . Inaccessible Outside air intake (if servicing supply air): Location:

Accessible for inspection? Y V N (explain):

— louvers, grates, screens or weather cap /~, Exhaust outlet/louver (if servicia exhaust air): Location:

Accessible for inspection? Y N (explain):

— louvers, grates, screens or weather cap Supply air distribution (if servicing supply air): — Supply air outlet(s) Est. total qty tO No. locations inspected 3 Specify shaft substrate (circle): gge fibrous class lined metal ii t fibrous glass board flex-duct v — Accessible fire dampers Est. total qty No. locations inspected 3 — Pipes/mechanical equipment, etc. located in shaft Return air distribution (if servicing exhaust air): — Exhaust air inlet(s) Est. total qty No. locations inspected_ Specify shaft substrate (circle): ) fibrous class lined metal masonry fibrous glass board flex-duct wo — Accessible fire dampers Est. total qty No. locations inspected — Pipes/mechanical equipment etc. located in shaft Other (specify):

Other Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust): tiJa V1TG of vst c c fi5e rvc- - 0 i$ sQ u

KEY: NP = not present; NF = not found; I = inaccessible; U = unknown

NYC-WTC 000135441