Law Department notice on WTC document preservation, Oct 2001

NYC 9/11 Public Portal Document

4.1.1 Physical Hazards

Noise - vacuums produce noise exposures in excess of the permissible exposure limit (90dBA). Operators of these pieces of equipment must wear hearing protection (plugs). Others working in the same room/ area must wear hearing protection as well.

Ambient temperatures - capable of producing either heat are expected to impact the projec. The WRS SOP for Heat Stress Management is included as an Appendix B.

Motor vehicles - obey local traffic laws, use qualified drivers in insured vehicles. Seatbelt use is mandatory.

Flame, Heat or Spark Producine (iterations - The use of flame, heat or spark producing equipment (e.g., cutting or welding torches and abrasive saws) is prohibited.

High or Elevated Work - All work near an unprotected side or edge (no handrail) which would allow a fall to a lower level of six feet or more will be performed using fall protection (e.g., body harness and lifeline). Fall protection equipment will provide continuous protection. Workers in aerial lift baskets will utilize full body harnesses with lanyards attached to the man basket. See the WRS Standard Operating Procedure for Fall Protection (Appendix D)

Electrical Safety - Groimd fault protection devices (GFCI) will be provided for all electric power tools and extension cords. Vacuums directly (no extension cord) plugged into the building’s outlets are exempt from this requirement when the outlet has been tested and verified to provide adequate grounding. Voltage detectors may be used to facilitate electrical safety. The WRS Lockout/ Tagout SOP (Appendix C) will be applied specifically to cleaning the elevator, and generally to activities specified in the SOP

jgye Protection - Eye protection is mandatory in all areas of the project site at all times. Eye protection will conform to ANSI Standard Z87.

Head Protection - Hardhats will be worn when overhead hazards exist and when the hazard of an employee bumping his head on an overhead object exists.

Floor Holes - cover floor holes in the building.

-001 WRS Infrastructure and Environment, Inc. 11

NYC-WTC_000145088