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Environmental Newsletter

Vol. 14, No. 6 - June 2025

A Professional Geologist – the Preferred Choice for CAM 17 Heavy Metals Soil Testing in Post-Wildfire Areas

After a wildland-urban interface (WUI) fire, homeowners, business owners, and industrial facility management often prefer a Professional Geologist to conduct environmental testing for hazardous materials like CAM 17 heavy metals over relying solely on an industrial hygienist due to differences in expertise, regulatory requirements, and scope of work.

What are CAM 17 Heavy Metals?

CAM 17 refers to a list of 17 toxic heavy metals commonly tested for in environmental investigations in California. These metals include arsenic, lead, mercury, cadmium, chromium, and others known to pose significant health and environmental risks. The acronym “CAM” stands for California Administrative Manual, and the CAM 17 list is used as part of hazardous waste characterization and soil analysis protocols under California regulatory standards.

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Building Occupant and Worker Exposures to Elevated Levels of Nitrogen Dioxide in the Built Environment

Nitrogen dioxide, along with nitric oxide, are the two most prevalent oxides of nitrogen, according to the U.S. Environmental Protection Agency (EPA). Both are toxic gases with nitrogen dioxide being a highly reactive oxidant and corrosive. Nitrogen dioxide is also one of the indoor pollutants frequently listed by health authorities as a possible exposure concern in the built environment.

Potential health effects associated with exposure to elevated levels of nitrogen dioxide listed by the EPA include:

Industrial Hygiene Resources to Protect Workers and Prevent New Cases of Silicosis

The National Institute for Occupational Safety and Health (NIOSH) describes silicosis as a spectrum of lung diseases caused by the inhalation of free crystalline silica. Silicosis is incurable and can lead to disability and death.

The Occupational Safety and Health Administration (OSHA) defines crystalline silica as a common mineral found in the earth’s crust. Materials like sand, stone, concrete, and mortar contain it. It is also used to make products such as glass, pottery, ceramics, bricks, and artificial stone.

Clark Seif Clark, Inc. (CSC) is the preferred environmental consultant for healthcare facilities, architects, schools, builders, contractors, developers, real estate professionals and municipalities. CSC provides air quality testing, monitoring, consulting and training services to reduce building occupant exposure to airborne pollutants and optimize indoor conditions.

Asbestos | Indoor Air Quality | Infectious Disease | Lead | Litigation Support

Mold | Occupational Health & Safety | Site Assessments | Water Quality Testing

Clark Seif Clark , Inc. (CSC)

800-807-1118

www.csceng.com

csc@csceng.com