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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_000133933
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NYC 9/11 Public Portal Document MAR-18-2888 @6:37A FROM:SERVICE 9146634160 i . 2.2 Mechanical Exhaust System Visual Inspection Form TO: 912126373185 P3373 Page] of J Mechanical Exhaust System Identification. ° ak {Y Location: 3 JOR: (QQ } Ee Area Served: 20 eg eens eS Associated mechanical roon: cleen Y N_ stored chemice!s‘refuse Y N dv Y N Serface Component System: Components Dust! WTC — not [NOTE: if component not present (NI), net found (NF) or inaccessible (1) please Debris Dust present indicate in las¢ column] Present? Present? | gine fovad é - . inaccdssible Eahaust air outlet: Location Accessible for inspection? Y rN (explain): “ loustts, crates and’or screens INEZ onside air duct y Vv ; 7 outside air damper(s) ‘ NE Enhaust fan unit: : = hlower essenidly incl. blower wheel, housing, ai: vanes, in-line nose ; attenuators : Y y blower housing acoustical lining 4 . « . = = J e : Vibsetion collars ATey Exhaust air distribution: Exhaust ait ducts Est total In ft___ N54) No. locezions inspected { . Specify type (circle): Gasial) fibrous class lined mets? masonry fibrous class hoard figacducr = wood Accessible in-line fise dampers Est. totelaty “7 No. lacations insnected © T agent t The yee Tee epee © int ae. . lees we ot == Se _ ; . . xs waNSSS esreareveces concess +4 8 eee cw see Asis . St etr grilles Est totalqtv 7) No, locations inspected (5 Zz Other (specify): ry Other Information: General impression (indicate recommendations for cleaning based on finding of WIC NN oo Dust Foun oN SY>Ter, CLEAN LVE tS Cust}: gy KEY: NP = not present; NF = not found; I = inaccessible; U = unknown NYC-WTC_000133933

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NYC-WTC_000133933Source: 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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