WTC Cleaning Recommendation Memo, 45 Wall Street, January 2003

NYC 9/11 Public Portal Document

Sent By: COLE CONSULTING CORPORATION C; 914 345 0045; Jan-15-03 12:17; Page 213

VENTILATION SYSTEM EVALUATION FOAM.

f ill l 1.V Vcu..■ s. ■..SW* - v.. 269-3003 Date of Evaluation: 09-27-02 itrp.rt #z I Building contact Blame and phone: Walter Grzybonskai (212) 3U Floor Evaluation Team (list name and affiliation); Claude Linton / Joy K Kirin 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 0 Residential Building Abe: 45 Years Multi-use Distance froth Ground Zero: Half Mile 0 Other;(describe) Zero: South East Number of residential units: NIC Number of floors: 29 + 2(b) Direction from Ground HVAC System Types (check all that apply) Unit ventilator (single residence unit) ________ Wall/wittdow AC unit (single residence unit) -Fan coil unit (single residence unit) Central ventilation system Heat pump unit (single residence unit) Passive shaft/duct This unit heat pumps in the floor supplying heat and cool to HVAC Shut Down: System Didn't Shutdown the 311`a Floor. Frequency Of filter change-outs: Every Two months in Commercial Place __.. lmpactt~d by WTC dust: Location: 30" Floor Elevator ` System Cleaned; No. YES Outside airintake accessible _1_Yes No (explain)

2.0 General Description Of HVAC System

No. Of Air Intakes: -One(]) W l.,ocation of Air Intakes: - North side of the Elevator Room . .

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

General Description: Two exhaust pumps in the basement, which serve! I" to 17th floor for kitchen and bathroom air out. th Two additional small exhaust pumps located on I8'h floor. They serve 110 24 floors for bathrooms and kitchens air out. , In addition, 15 mushroom fans on rooftop to serve 25 — 30t 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 unit8 in common soaee

Ventilation Svstctn identification: Make: McQuay M#LPHIVWHI2DMDR Serial No. 76GO9249-07 T. ocation: 30'" Floor Elevator Serve: - Serving beat and cool air to the Gym. Kitchen and Club. Access adequate for inspvvlion of components: Yea A I B C r' D Suspect WTC-Related Dust

Dust/Diit/Debtls System Component Calor Light Heavy Present Estimate Substrate Material N'- While (<_ 1/16 (Z 1/16 inch depth 7 (Y/N) dust loading B - Rrown inch depth); (sheet metart wrapped) c - urcy System Components (sheet metal lined) (fiberglass) -Black (tlexible connector) ldmihlr ws,11n11

NYC-WTC-000133537