Tuesday - November 10, 2026

 6:00 p.m. to 8:00 p.m. PDT

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"Risky Rocks - Application of Industrial Hygiene to Environmental Projects"

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By:

Dale Walsh, Walsh Certified Consultants

Aurelia Walsh, UES Professional Solutions  

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Abstract:​

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This presentation will include the following topics as time allows: common toxic minerals and their hazardous components; asbestiform minerals; other hazardous fibrous minerals such as erionite; naturally occurring asbestos (NOA) air and soil sampling; respirable crystalline silica description and management; monitoring and management of sulfur dioxide and sulfuric acid from marcasite decay in a copper mine; methane and hydrogen sulfide emissions into buildings from shallow petroleum in southern California; radon emissions and accumulation in buildings from uranium, thorium and radium decay in soil; aerially deposited lead at old roads and other lead sources and exposures requiring written compliance program; elevated arsenic in southwest U.S. soils and monitoring during property development; and mercury sources, management and monitoring methods.

This Power Point presentation will include photos, quizzes and a question period at its conclusion.  Examples of some of the minerals and other interesting objects will be distributed for additional audience interaction. 

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​​​​​​​​​​​​​​​​​​​​​BIO:

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Dale Walsh is a Certified Industrial Hygienist with a Toxicology Master of Science from the University of Arizona and over 40 years of consulting experience in mold assessment, remediation, and litigation, indoor air quality, industrial hygiene and OSHA compliance.  He has worked for Converse Consultants Las Vegas since 1992 as well as other environmental consulting firms including his own.  Mr. Walsh has been President of local health and safety related organizations and actively participates on ASTM standard committees involving indoor air quality and microbial sampling and analysis.  He has also taught at the local University and College (UNLV and CSN).  He has been deposed by both plaintiff and defense counsel more than a dozen times and testified in court three times in the last five years.

Aurelia Walsh is an Environmental Project Manager with UES in Las Vegas, Nevada, with approximately 10 years of experience in environmental consulting, project management, and industrial hygiene. She is a Nevada-certified Asbestos Abatement Consultant and holds training credentials in AHERA Building Inspection, Project Monitoring, Project Design, and Management Planning. Her technical experience includes mold investigations, indoor air quality assessments, asbestos and lead-based paint surveys, occupational exposure monitoring, and environmental site assessments. Ms. Walsh has managed environmental investigations for commercial, industrial, and public-sector clients throughout the western United States. Her work encompasses field investigations, environmental sampling, technical reporting, regulatory compliance, and assisting clients with environmental health and safety concerns.

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