HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document — 1 1 i ---' -- a awLQiit P-umua Jys[em iaentmcation: - ------ CN A J t. 1U(*US mortis ' B____________________________________ Area Served: (IhN 2ee -- ;3oo AL8AAY E7 • Associated mechanical room: clean Y N &y_Y N stored chemicals.refuse Y N System Components Surface ComPonent Dust/ WTC I• not present (NOTE: If component not present (NP), not found (NF) or inaccessible (I) please Debris Dust Indicate in last column] I Present? . not found Pl+essnt? . Exhaust air outlet: not sible Location:

Accessible for inspection? Y Y N to l ):

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

Exhaust fan unit: — blower assembly incl. blower wheel, housing, air vanes, inline noise attenuatars — blower housing acoustical lining — vibration collars P Exhaust air distribution: — Exhaust air ducts Est, total In i4 9.0 O No. locations inspected t Specify type (circle): -zx.etst 1 s i nssmuv fibrous ciass board ! flex-duct — Accessible in-line fire dampers Est total qt No. locations inspected 7 y E NP — Accessible turning vanes Est. total qty No. locations inspected — Exhaust air grilles Est. total qty No. locations inspected NP ) Other (specify):

Other Informatinnz

General impression (indicate recommendations for cleaning based on finding of WTC dust): w +G VEz..ATLt) D oS1 WAS oBSEAV£D IM 7 NE fAti AMD iT 3 &WPbJV

— C LEAK) I m ci s , ~ FoR WIt 'P~Et 7E D )uST.

PA N s ITS C'.oM?DNE-N?S rlNJO STS C E#,t l 'T#{ E E?cfAu a1 As soeaR-'~ ~uc7 S.

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

NYC-WTC 000135440