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IEQ Expert from Clark Seif Clark Shares Knowledge with Restoration & Remediation Magazine

CSCís Derrick Dennis shares his comprehensive indoor environmental quality (IEQ) expertise with R&Rís readers.


Last month, readers of Restoration & Remediation (R&R) magazine got a special opportunity to hear from one of the nationís leading indoor air and environmental quality experts.† Derrick Dennis, Vice President of IEQ for Clark Seif Clark (CSC) and the Indoor Air Quality Associationís (IAQA) First Vice President had the opportunity to share his knowledge with R&Rís readers.

The article appeared in the July issue of R&R and was entitled, ďAn Introduction to Indoor Air and Environmental Quality.Ē Mr. Dennis discussed how every day across the nation people perceive indoor environmental quality issues, problems or deficiencies.†† He shares with the readers, ďIn my time as an IEQ expert, I have developed my own abridged definition of Ďgood IEQ.í As with all things abbreviated, it is an oversimplification of an infinitely complex set of factors. In Ďthe gospel according to Derrick Denis,í good IEQ is ambient, comfortable, compliant and safe.Ē†

On the issue of safety, Mr. Dennis reported, ďThere are many potential indoor environmental hazards (and disorders associated thereto). There are chemical contaminants like chlorine (pulmonary edema) and carbon monoxide (asphyxiation). There are biological contaminants like bacteria, such as Legionella pneumophila (Legiolellosis) and MRSA (necrotizing fasciitis), and fungi such as Coccidioides immitis (Valley Fever) and Aspergillus niger (aspergillosis). There are physical contaminants such as asbestos (mesothelioma) and silica dust (silicosis). There are energetic contaminants such as ultraviolet light (skin cancer) and x-ray radiation (radiation sickness). Each of these mentioned, and the infinitely larger list of unmentioned hazardous contaminants, can be harmful in the indoor environment.Ē

The full article can be seen at:

To learn more about indoor air and environmental quality, industrial hygiene, or health and safety issues, please visit, email or call (800) 807-1118.†

About Clark Seif Clark
CSC was established in 1989 to help clients in both public and private sectors address environmental, IAQ, and health and safety (EH&S) issues. CSC is a leading provider of these services with multiple offices along the western seaboard and southwest. The company believes in science-based protocols and has a strong background in engineering, making them the preferred environmental consultants to industrial clients, healthcare facilities, architects, schools, builders, contractors, developers and real estate professionals.


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