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Memo on WTC HVAC cleaning unit pricing, May 2003

Machine-extracted title · confidence 95%

Memo clarifying unit pricing and inspection forms for WTC HVAC cleaning contractors.

NYC-WTC_000135304–000135305

Folder label: “HVAC COSTS

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Scanned page image, NYC-WTC_000135305
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NYC 9/11 Public Portal Document

The ITEM Supply Fan is usually associated with an Air-handler, which has components such as dampers, filters, and heating/cooling coils and motor-fan assembly. All these components should be cleaned and the filters replaced. Unit costs for each of these ITEMS should be given and referred to In 21Central Ventilation System.

My suggestion for unit pricing for leaning package unit is to use tonnage. As a rule-of-thumb, there are 400 dm/ton.

Provide MSDS for Encapsulation ITEM

Fresh Air Plenum should be $/ft2 instead of Per cu ft.

What type of Access Hatches; Cam lock, hinged door or panel?

Once the UNIT PRICES on the ITEMS have been further detailed, these ITEMS should also be given ITEM numbers and provided in a new price list.

Have the cleaning contractor give you several Supply & Exhaust System cleaning cost estimates for several systems In order to gain familiarity with the UNIT Pricing method.

Call me on my cell If you require further assistance

David

9Page2

NYC-WTC 000135305

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NYC-WTC_000135305Source: NYC Law Department, mirrored locally

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