Law Department notice on WTC document preservation, Oct 2001

NYC 9/11 Public Portal Document

as to whether the following contaminants are present:

• Man-made Vitreous Fibers • Crystalline Silica • Lead • Asbestos

Bulk samples when applicable will be collected for quantitative analysis of the above-referenced analytes. Samples for analysis of man-made vitreous fibers, crystalline silica, lead and Asbestos may only be submitted to an EPA approved laboratory. Wipe samples and air samples may be taken when the quantity of dust to be analyzed is insufficient for bulk collection.

The onsite Environmental Cleaning Contractor shall note any mold growth, rodent droppings, or other biological hazards if observed.

5.0 SITE EXAMINATION

Prior to conunencing work, all ventilation system/duct cleaning professionals shall visit the site to examine the conditions under which the work is to be performed in order to identify those conditions that might adversely affect the work. These conditions may include, but may not be limited to the following:

1. Difficulty accessing ventilation system components.

2. Ventilation systems components located in parts of the building that are not included in the scope of ventilation system cleaning, but that may cause the ventilation system components to become re­ contaminated following cleaning.

3. Asbestos-containing materials on ventilation system components to be cleaned or damaged asbestos-containing materials in the vicinity of the ventilation system components to be cleaned.

4. Specific scaffolding and/or fall protection requirements.

6.0 VENTILATION SYSTEM/DUCT CLEANING FIRM REQUIREMENTS

6.1 The ventilation system/duct cleaning firm shall meet the following minimum health and safety requirements:

Appropriate Respiratory Protection Program as required by 29 CFR 1910.134.

Appropriate Hazard Communication Training as required by 29 CFR 1910.1200, to include health hazards associated with man-made vitreous fibers, crystalline silica, lead, asbestos, and microbiological hazards that may likely be encountered in ventilation systems, in addition to chemicals brought on site to perform the work.

Prior experience in cleaning HVAC systems.

Appropriate personal protective equipment and written program.

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NYC-WTC_000145208