News & Events

Celebrating 30 Years: The Colden Corporation Journey

For three decades, Colden Corporation has partnered with organizations to deliver practical, innovative health, safety, and environmental solutions. Founded in Philadelphia in 1996 by David de Lalla, Greg Richey, and Chris Wesley, who remain actively involved in the firm today, what began as a small venture has grown into a trusted independent consulting partner supporting U.S. and international clients. Our progress over the past 30 years has been a testament to the hard work of our talented team and the meaningful connections we’ve established with clients across industries and geographies.

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News & Events

Colden’s Michele Shepard to Present SESHA Webinar on Industrial Hygiene Assessment Strategies

Join Colden’s Michele N. Shepard, PhD, MS, CIH, Principal and Vice President of EHS Services for an upcoming SESHA webinar, “Industrial Hygiene Assessment and Monitoring Strategies for Semiconductor Facilities and Cleanrooms,” on September 9, 2026, at 4:00 p.m. EST.

During this session, Michele will highlight practical exposure assessment and monitoring strategies to support effective safety and health management systems.

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Technical Resource

Colden’s Favorite OSHA Letters of Interpretation (LOI): Who Can Provide Fall Protection Training?

You’ve identified fall hazards at your non-construction site and are ready to develop a fall protection program and train your team. But then the question comes up: who can actually provide that training?

After reviewing the Occupational Safety and Health Administration (OSHA) Walking Working Surfaces standard under 29 CFR 1910 Subpart D, two requirements stand out:

  1. Employees must be trained before exposure to fall hazards.
  2. Training must be conducted by a qualified person.

So what does that actually mean in practice? Does a qualified person need a specific certification or degree?

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News & Events

Colden to Present at AIHA Deep South September Industrial Hygiene Seminar

Join the AIHA Deep South Section for its annual September Industrial Hygiene Seminar on Friday, September 18, 2026, at the Edward Dufresne Community Center in Luling, Louisiana.

Chrisy Walsh, MS, CIH, CSP will co-present “Rethinking Risk: Applying Statistics to Exposure Data” with Tuan Nguyen, MSPH, CIH, CSP of Shell Americas, exploring practical statistical approaches for interpreting exposure data and supporting risk management decisions.

Shannon R. Magari, ScD, MS, MPH will present “Practical Methods for Investigating and Addressing the Health and Safety Risks of Water Intrusion and Microbial Growth: Analysis of Four Case Studies”, highlighting real-world investigation and response strategies.

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Technical Resource

EHS Auditing Principles and Practices

Audits are important tools for effective environmental health and safety (EHS) management and continual improvement, including for compliance, EHS management system internal reviews and external certifications, and as part of corporate social responsibility, due diligence and supply chain management. The term audit is defined by the International Organization for Standardization (ISO) as a “systematic, independent and documented process for obtaining objective evidence and evaluating it to determine the extent to which the audit criteria are fulfilled.” [ISO 19011:2018]

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News & Events

Chrisy Walsh Contributes to Newly Released Occupational Safety and Health Handbook

We’re thrilled to share that our own Chrisy Walsh, MS, CIH, CSP, out of our New Orleans Regional Office, is a published contributor in the newly released Handbook of Occupational Safety and Health, Fourth Edition (Wiley), edited by S. Z. Mansdorf.

Chrisy co-authored Chapter 2, “Information Resources for Occupational Safety and Health Professionals,” alongside Leah R. McEwen (Cornell University Library) and Robert F. Herrick (Harvard T.H. Chan School of Public Health, retired).

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Technical Resource

Colden’s Favorite OSHA Letters of Interpretation (LOI): Eyewash and Shower Requirements

In 2020, exposure to harmful substances or environments accounted for 4,830 cases of eye-related injury or illness cases that resulted in at least one day away from work.

Research estimates that eighty to eighty five percent of our perception, learning, cognition and activities are mediated through vision, (Politzer, 2008).  A team of neuroscientists from MIT has found that the human brain can process entire images that the eye sees in as little as 13 milliseconds — the first evidence of such rapid processing speed. (Trafton, 2014). An eye injury can have serious implications for employees including their ability to drive, watch a game, or effectively communicate.

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