All waste sites change constantly as the remediation effort progresses, and the initial safety and health practices may not always be appropriate for a changing site. As new site hazards emerge, responsible bodies must revise health and safety plans and update personal monitoring. Because of the changing nature of hazardous waste remediation sites, health and safety officers are needed during all site operations to implement the health and safety plans and revise them as needed to address new hazards. Rigorous daily on-site inspections and exposure monitoring by experienced industrial hygiene personnel provide the best possible insurance that workers will not be overexposed to health hazards and that the documentation to prove safe working conditions will be available in the future.

Helix Environmental, Inc. brings to its projects years of expertise gained in hazardous waste site operations and asbestos abatement projects, from the perspective of industrial hygienists and occupational health professionals. Other projects have included providing site health and safety oversight at "Superfund" and private waste remediation sites, air sampling and analysis for personnel and boundary line locations evaluating chemical contaminants at both industrial and construction sites and workplace and community noise studies.