Preliminary scope of work document for cleaning 114 Liberty Street,

NYC 9/11 Public Portal Document

December 17,2002 114 LIBERTY STREET REMOVAL OF DUST, DEBRIS, AND CONTAMINATED MATERIALS 3.03 WORK AREA ENTRANCE AND DECONTAMINATION SEQUENCE:

A. All workers and other persons who will enter the work area shall remove street clothes, put on clean overalls, and respirator in clean rooms. Workers shall then pass through showers to the equipment room. B. Workers shall then proceed to wrk area.

C. Before leaving the work area, the worker shall remove all gross contamination and debris from the coveralls. This is to be accomplished by one worker assisting another in brushing each other off or vacuuming with HEPA filter equipment vacuums approved for asbestos and/or contaminated material clean-up.

D. The worker then proceeds to equipment room and removes all clothing except respiratory protection equipment. Contaminated extra clothing may be placed in a bag for disposal with other material.

E. Any additional clothing such as non-disposable footwear, and equipment shall be left in the equipment room. The Contractor shall provide workers with additional warm garments as required by climatic conditions. These must be treated as contaminated clothing and left In the equipment room and disposed of at the end of the project.

F. The worker then proceeds immediately into the shower room. Respiratory protection equipment shall be removed after worker has completely showered to prevent inhalation of fibers.

G. After showering, the worker moves to the clean room and dresses in either new coveralls for another entry, or street clothes, if leaving.

H. Workers shall not eat, drink, smoke, or chew gum or tobacco in the work area. To do any of the above, the worker shall have to follow the complete decontamination sequence.

I. Worker footwear shall remain inside the work area (equipment room) until completion of the project and then be disposed of as contaminated waste.

J. Everyone entering the work area must follow this procedure completely every time he/she enters and leaves the work area.

K. The Contractor, in order to prevent contamination of the environment, shall be responsible for controlling access at the work site and shall maintain a daily log of personnel entering the work area. A list of names of workers shall be posted with their start and stop times br each day.

L. The interior of the worker decontamination enclosure system shall be wet cleaned/HEPA vacuumed, as appropriate, after each shift change and meal break.

3.04 MAINTENANCE OF DECONTAMINATION ENCLOSURE SYSTEMS & BARRIERS:

A. The following procedures shall be followed during the conduct of abatement activities. B. All polyethylene barriers inside the work place and partitions constructed to isolate the work area from occupied areas shall be inspected bythe supervisor at least twice per shift.

48 ® AMBIENT GROUP, INC.-2002

DECONTAMINATION UNITS

NYC-VVTC_000155576