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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_000133930
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OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

2.2 Mechanical Exhaust System Visual Inspection Form S Poe •I nf 1 Mechanical Exhaust System Identification: Location: (~ Area Served:

Associated mechanical room: clean Y N dry ? N stored chemicals!refuse Y N Surface Component System Components Dust/ WTC p not ~TOTE: if cornP onent itbtpresent (NP), not found m) F or inaccessible (1) please Debris Dust present indicate in last column] Present? Present? not found

inaccessible Exhaust air outlet: Location:

Accessible for inspection? Y V TT (explain):

louvP s, grates and/or screens /V outside air duct outside air damper(s) At Exhaust fan unit: blower assembly incl. blower wheel, housing, air vanes, in-line noise attenuators Al blower housing acoustical lining N vibration collars n/ p Exhaust air distribution: Exhaust air ducts Est total In ft_____________ No. locations inspected_ • • Specify type (circle): Lnetal fibrous class lined metal masonry fibrous glass board ex-duct wood Accessible in-line fire dam rs Est. total t y `? No. locations ins ected D Accessible turning vanes Est. total No. location_ inspected NA Exhaust air grilles Est. total gxy 7 No. locations inspected 0 Other (specify):

__ Other Information:

General impression (indicate recommendations for cleaning based on finding of \1TC dust):

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

NYC-WTC 000133930

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NYC-WTC_000133930Source: NYC Law Department, mirrored locally

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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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