HVAC consulting services invoice, NYC WTC site, 2003

NYC 9/11 Public Portal Document • 2.2 Mechanical Exhaust System Visual Inspection Form Mechanical Exhaust System Identification: Page 1 of 1 fXNAuS7 #~ Location: ,, Area Served: • X50 c1 TN.) ✓4Ef(C(a'4 7c3 AW Associated mechanical room: clean Y N dry Y N stored chemicals/refuse Y N System Components miurraee Component [NOTE: if component not present (NP), not found (NF) or Dubs/ WTC Dust • not present inaccessible (I) please Debris Dust • not found indicate in last column] Present? Present? Exhaust air outlet: Location: • inaccessible

Accessible for inspection? YEN (explain): I I , j — louvers, grates and/or screens — outside air duct — outside air damper(s) j1 Exhaust fan unit: n~ — blower assembly incl. blower wheel, housing, air vanes, in-line noise attenuators — blower housing acoustical lining ►_ — vibration collars R:Yh9n C, sir fliNrij...•:w~. NF — Exhaust air ducts Est. total In ft No. locations inspected,_ Specify type (circle): ~-,--~ t las s 'd ( ) so fibrous glass board flex-duct wood l — Accessible in-line fire dampers Est total qty No. locations inspected — Accessible turning vanes Est. total qty No. locations inspected —Exhaust air grilles Est. total qty_ No. locations inspected O At hr (cnani&,l. I

Information:

General impression (indicate recommendations for cleaning based on finding of WTC dust): ) EX Av5-r FAN'SJ1 4£t'cp L,N,N5 +5 C~vFRCD v, jm-i kT(, retr&Ll c.cc Q,t_E A N I J Ca I S E'Q U tR E NB .c..t.fl7 'D 1L-EAN TAIL' EX•4tAus7 FLAN Ut3JT A "MC% i ) flH ITS (POEI'3 L

Ai ITS i°1"i i ,D uc.'Y.

KEY: NP = NF = not found: I = inacreccihln, it =

NYC-WTC 000135530