HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document ~J'Sle. ISM Inspection Pores . Mechani t+ em Identification: Page 1 of I 1-ovation: +tlws ~1.2- ~''' I N 2&9F . - J e o A t aA n►y ,AFT Area Served: . Associated mechanical room: clean Y N dry Y N stored chemicals/refose Y N System Components Surface Component 'NOTE: if component not present (NP), not found Dusr ( or inaccessible (1) please WTC • not present indicate in last column] Debris Dust Present? Pmt? • not found Exhaust air outlet: Location: • inaccessible Accessible for inspection? Y V/ N (mil ): I

louvers, grates and/or screens ide air duct I -i de air damper(s) fan unit: y er assembly Incl. blower wheel, housing, air vanes, in-line noise attenuators er housing acoustical lining tion ars rExhau air distribution: Ij F air ducts Est. total in ft 10 0 No. locations inspected t Specify type (circle): s J s ' fibrous si• w, ~ i ;

—Accessible in-line fire dampers Est. total qty No. locations inspected I —Accessible turning vanes Est, total qty NJ No. locations inspected —Exhaust air grilles Est. total No. locations inspected 0 ~P Other (specify): ._

Other information:

General Impression (iindicate recommendations for cleaning based on fording of WTC dust): TG LhTLD DUST WAS 035"VEj) to't+( q j s .D 1TS CO JV~• IZ7 duff cis ~l9soc.cA?£~ J>uCTS.

C LE Si c i3 qt id F WTC 9 tLJ •TED DUST. -- 0-vo si r.i{E f xKAU sY 1A N , ierS eoftoNefJ75 AND 1TS ASsdec,}'T Zoc7S.

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

NYC-WTC 000135424