As Remedial Construction Services, (RECON) moves into higher hazard work regarding demolition, special attention should be focused on increased awareness, communication, and engineering controls to mitigate hazards on these projects:
• The simple nature of a demolition project creates continued changing conditions. Therefore, always thoroughly review your JSAs/JSAPs each day and discuss how the project will change as progress is achieved, and implement a "Stop Work" at any time if a situation arises which requires communication and engagement by the project team to adequately assess and mitigate the condition(s).
• Always review hazardous materials survey information (e.g., lead based paint, ACM, universal waste, etc.) prior to commencement of field operations, and insure these areas (if not abated) are properly and clearly marked for identification purposes.
• When setting up a controlled work zone within a high hazard area, be aware of wind direction by utilizing a wind sock to constantly observe wind direction. Always designate a primary and contingency safe zone based on typical prevailing wind direction as falling debris may be directed in the path of wind. In addition, when lead based paints are present on the exterior surfaces, wind-blown dust/lead particulates will travel in the path of wind. Appropriate respiratory protection should be assessed to minimize chemical exposure potential.
• Understand that during demolition, debris "will" fall, and as such, designate a radius between the active work area and workers such that no personnel should be allowed entry into the "restricted barrier zone" during active demolition. The restricted barrier zone radius should consider the height of structure and wind direction.
• Review your applicable state/federal OSHA regulations which govern the requirement to perform pre- and post-work blood lead and zinc protoporphyrin screening (state of California has specific requirements regarding lead in construction - CCR Title 8, Section 5192 which supersedes the federal standard). Measurement of zinc protoporphyrin in red blood cells has been used as a screening test for lead poisoning.
• Never enter a structure or building after demolition is in progress. Structural integrity can be greatly diminished very quickly while appearing safe for entry.
• Demolition debris always has jagged or sharp edges, nails etc. Maintain proper good housekeeping and security of demotion debris.
• Use of hard tire or track equipment in lieu of rubber tire equipment will reduce tire damage.
