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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_000133917
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NYC 9111 Public Portal Document ==•rr=]r i'''iS2L r .t , 1. w~~,a ovau Vt

hart Y -D (_anprat Tnfnrrnatinn . Date of Evaluation: • T1' . Building:contact naive and phone:

Evaluation Team (list name• and affiliation):. ; •• (Envirorunental .Professional) •_ .:~ v• ~ •' (HVAC E ctrical Professional) (Sheet Metal Professional) Building Address I Type of Facility (check all that apply): q tWAj. Residential / 1j Multi-use . Other (describe) Number.of residential units: • . • Number of floors: HVAC S}stem T)pes (check all that apply) fl Unit ventilator (single residence unit). Wall/window AC unit (single residence unit) Fan coil unit (single re idence unit) Central ventilation system - Beat pump unit (single residence unit) Passive shaftlduct. Otber'(descn'bt) Location of outside air intake: Outside.eir intake accessible for'inspection • Y N (explain) . S ' Part 2.0 Checklists 2.1 Ventilators, wail air conditioning units and window air conditioning:nits In common ;paces Ventilation System Identification: ' .,~ S Location: Access adequate for inspection of components: - , •Dust,'Dirt / Debris Suspect WTC-Related Dust System Component Substrate Material • (sheet metal wrapped) Light Heavy System Components (sheet metal lined) Noire (<3/16 inch (2 1/16 inch present' Estimate % of total dust (fiberglass) depth) depth 0Ii) 'loading (flexible connector) (double walled) • Outside air intake louvers, grates ( and,'or screens • Outside air duct Outside air damper(s) Return air grille • , Return air plenum •

Filter rack ' Filter media Coils (evaporator) • Blower assembly Condensate drain pan In-line electrical resistance strip - hea:ers (in supply ducts S + j connected to unit ventilators) Fire dampers . f I III Turning vanes : Supply air plenum or supply duct f Supply air plenum or supply duct liner ' Supply air diffuser . i

2.1 Ventilators, wall air conditioning units and window air conditioning units In common spaces (cont.)

NYC-WTC 000133917

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NYC-WTC_000133917Source: 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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