Laboratory form, 209 Broadway, Sept 2001

NYC 9/11 Public Portal Document

11L. TESTWELLL' Microbial Abatement 55 Church Street New York, NY LABORATORIES,INC, Page 1

WORK PROCEDURES

The following procedures shall be followed for the removal of the microbial contaminated drywall surfaces from tower floors 26 through 55 as identified on the attached drawings. 1. The Contractor shall be responsible for providing trained, experienced and qualified workers for this project.

2. Drawings identify locations where visible growth has been observed along with an estimated quantity of affected drywall surface

3. The Contractor shall abide by all health and safety requirements including NYC Department of Health Guidelines for fungi remediation. It is the responsibility of the Contractor to provide adequate Personal Protection Equipment (PPE) including protective clothing, respiratory protection in accordance with OSHA 1910.134, and the workers and inspectors involved in the microbial cleanup decontamination facilities to and sanitization. 4. Removal of affected drywall surfaces identified as affected shall be as follows: a. Small Isolated Areas (30 sq. ft or less).

(1). One (1) layer of plastic sheeting shall be placed on the floor directly under the sheetrock to act as a drop cloth.

(2). Materials to be removed shall be lightly misted with a ~.S disinfectant for dust suppression prior to removal (3). The Sub-contractor must use a HEPA vacuum in cutting and removal. conjunction with sheetrock

(4). All contaminated absorbed wall and/or ceiling drywall shall be removed and placed in six mil plastic bag for disposal. Contractor the affected areas and an additional 2'-0" shall remove sheetrock in beyond the affected adjacent planar surface. Do not extend cutting into other significant wall to chase, wall to ceiling, etc.) structures (i.e chase to wall,

Where affected drywall includes a vertical chase enclosure containing mechanical systems, such mechanical systems shall be inspected for signs of visible growth and, if determined to be present, said insulation shall be removed. All exposed metal studs shall be leaned and sanitized after sheetrock removal. Do not disturb or otherwise undermine finished stone base, flooring, sinks, bathtubs, tile walls, ceilings, etc. If such items are remove as much drywall as possible adjacent to affected surfaces, and spray the remaining surfaces with disinfectant. (8). Affected areas shall be allowed to thoroughly dry prior to-closing openings.

'rti

NYC-WTC 000105885