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HVAC consulting services invoice, NYC WTC site, 2003

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Invoice for HVAC consulting services provided at the World Trade Center site in 2003.

NYC-WTC_000135339–000135553
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NYC 9/11 Public Portal Document

250 South End Avenue, Manhattan, NY January 30, 2003

Inspection Details:

As part of the survey, the Mechanical and the Environmental Professionals inspected the HVAC system types listed below.

A. A total of five (5) mechanical exhaust fans of kitchens and bathrooms located on the main roof, two (2) mechanical exhaust fans located on the roof of the elevator room, one (1) mechanical exhaust fan located on the roof of the ME room, two (2) mechanical exhaust fans located on the 14th floor, one (1) mechanical exhaust fan located in the basement. B. Two (2) chimneys stacks located on the main roof and two (2) chimneystacks located on the roof of the elevator room (these two (2) stacks were not inspected because the air outlets more than 20 If. in height above the roof level). C. One (1) HVAC unit located on the roof of the elevator room and serving the elevator room D. One (1) AC-2 unit located in the compactor room and serving the lobby. E. One (1) heating unit located in the lobby and serving the east side of the lobby. F. One (1) heating unit located in the lobby and serving the west side of the lobby. G. One (1) HV-I located in the basement and serving the basement rooms and the hallways on all floors.

Detailed identification data and visual inspections are documented in the attached checklists.

Summary of Findings:

HV-1 unit heavy accumulation of WTC related dust was observed inside the unit between the air intake grill and the filter. WTC related dust was not observed beyond the filters.

\V TC related dust was observed in the mechanical exhaust fans # 03, 04, 05, 06, 07, 08, 09 (as they are numbered in the evaluation forms) in the units and their associated components. Approximately 1,300.00 linear feet of ductwork is covered with W'I'C related dust and needs to be cleaned.

All the other systems inspected appear to be free of WTC dust. All the findings are documented in the attached evaluation forms.

Scope of Work:

Clean the exhaust fans #03,04,05,06,07,08,09 located on the main roof, on the roof of the elevator room and on the 14th floor, along with their associated components and ducts. Also clean the entire system of the HV1 located in the basement.

Please feel free to contact me should you require any further information.

Si cerely,

V iiios Director of Operations

Attachments Ventilation System Evaluation forms

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NYC-WTC 000135522

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NYC-WTC_000135522Source: NYC Law Department, mirrored locally

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