Health and Safety Consulting
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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.
News & Events
Join Colden at the 2026 AWMA/AIHA Conference
Join Colden at the 2026 Central New York Chapters of the Air and Waste Management Association (AWMA) and American Industrial Hygiene Association (AIHA) Joint Technical Conference on March 24th in Skaneateles, NY. Clint Smith, MS, CIH, CSP, Chizoba Onwubuche, MS, CSP and Joshua Pinals will be in attendance. Don’t miss this opportunity to engage with local industry professionals and enhance your knowledge.
Technical Resource
Colden’s Favorite OSHA Letters of Interpretation (LOI): Who’s In and Who’s Out for Laboratories: I have a lab onsite; do I need a chemical hygiene plan (CHP)?
Many facilities have lab areas, but only certain types of operations are required to have an OSHA chemical hygiene plan (CHP). In 29 CFR 1910.1450 OSHA defines the “laboratory use of hazardous chemicals” to include the handling or use of hazardous chemicals where all of the following conditions are met: 1) chemical manipulations are carried out on a “laboratory scale” 2) multiple chemical procedures or chemicals are used 3) the procedures involved are not part of a production process, nor in any way simulate a production process, and 4) “Protective laboratory practices and equipment” are available and in common use to minimize the potential for employee exposure to hazardous chemicals.
News & Events
Join Colden at the 79th Annual Northeast Industrial Hygiene Conference and Exposition (NEIHCE)
Colden will sponsor and exhibit at the 2025 Northeast Industrial Hygiene Conference and Expo (NEIHCE). The event will be held on Friday, December 5th at 7:15am – 4:00pm EST at The Pines Manor in Edison, NJ. In attendance will be Greg W. Richey, MS, CIH, CSP, AIHA Fellow, Christopher J. Wesley, CIH, Chrysoula J. Komis, PhD, MS, CIH, CSP, CHMM, CPEA, AIHA Fellow, Catherine Bobenhausen, MS, CIH, CSP, AIHA Fellow, LEED BD+C, Brian Hovendon, CIH, Giovanni Delgado, Daniel Inman, MSPH, CIH, CSP, and Thomas Rodgers, CIH, GSP.
Technical Resource
Colden’s Favorite OSHA Letters of Interpretation: Air Sampling for Total and Inhalable Size Fractions
Can you collect air samples using a method for the inhalable size fraction and use those results to demonstrate compliance with OSHA Permissible Exposure Limits for total size fractions?
Determining the appropriate aerosol particle size fraction(s) [1] to monitor is an important consideration in industrial hygiene exposure assessments.
News & Events
Join Colden at SESHA’s Fall Mini-Conference on Environmental, Safety and Health for High Technology
Colden will be exhibiting and presenting at SESHA’s Fall Mini-Conference! The symposium will begin on Tuesday, October 28th and conclude on Wednesday, October 29th at the Hilton Albany in Albany, NY.
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.
