WTC Cleaning Recommendation Memo, 45 Wall Street, January 2003

NYC 9/11 Public Portal Document

VENTILATION SYSTEM EVALUATION FORM Part 1.0 General Information Date of Evaluation: 9-27-02 Report #2 Building contact name and hone: Walter Grzybonska/ (212) 269-3003 3rd Floor Laundry Rooms Evaluation Team (list name and affiliation): Claude Linton / Joy K. Kurin Environmental Professional: Cole Consulting Inc. HVAC Contractor: DJH MECHANICAL ASSOCIATES LTD. Sheet Metal Professional: Building Address: 45 Wall Street, New Type of Facility (check all that apply): York, NY 10005 ❑ Residential Building Age: 45 Years ® Multi-use Distance from Ground Zero: Half Mile ❑ Other (describe) Direction from Ground Zero: South East Number of residential units: NIC Number of floors: 29 + 2(b) HVAC System Types (check all that apply) ❑ Unit ventilator (single residence unit) ❑ Wall/window AC unit (single residence unit) 0 Fan coil unit (single residence unit) ❑ Central ventilation system ® Heat pump unit (single residence unit) ❑ Passive shaft/duct There is a small pump fixed on the window providing heat. HVAC Shut Down: System Didn't Shutdown There is no evidence for the WTC Dust. We cannot find any Frequency of filter change-outs: Every Two months in model no. and serial no. because they have painted the unit. Commercial Place Impacted by WTC dust: No Location: 3 1d Floor Laundry System Cleaned: No. Rooms Outside air intake accessible Yes x No (explain)

2.0 General Description Of HVAC System

No. Of Air Intakes: - 0 (No Fresh air intakes) Location of Air Intakes: - N/A

Floor Served: - N/A Whether Intakes at Street Level: -N/A No. Of Rooftop Blower/Mushroom Vents: 15 General Description: -N/A Individual Heating / AC unit Present or not: - YES

General Description: Two exhaust pumps in the basement, which serve 1 51 to 17"' floor for kitchen and bathroom air out. Two additional small exhaust pumps located on 18"' floor. They serve 18 — 24`h floors for bathrooms and kitchens air out. In addition, 15 mushroom fans on rooftop to serve 25 — 30th floors for kitchens and bathrooms air out. Enclosed please find pictures taken of the passive shaft/duct shaft and mushroom fans, which showed no signs of WTC dust debris.

3.0 Fan coil/ heat pump units in common spaces

Ventilation System Identification: Make: McQuay <We can't Find> Serial No : < we can't find> Location: 3`d Floor Window Serve:- Serving heat air to 3rd Floor Laundry Room. Access adequate for inspection of components: NO. Since it is painted we, can't open it as the nuts and bolts are jammed.

4.0 Conclusions/ Recommendations:-

General Impression: There is a small heat pump on the window providing the heat. There is no access to look for fresh air intake. There is no evidence for WTC-related dust.

NYC-WTC 000133536