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Our Clients Say It Best:  


"Sterling and Associates has been a valued member of the Phylmar Affiliate Network for more than 10 years.  They perform at a consistently high quality level earning a place in Phylmar’s Inner Circle of best in class consultants—an honor granted to only the top 10% of our 500 affiliates."  

Mark Katchen, CIH
Managing Principal
The Phylmar Group, Inc.  


"For more than 15 years, PES Environmental Inc. has had a solid working relationship with Sterling & Associates. We have relied upon Sterling & Associates to provide Industrial Hygiene assistance on our projects and have referred many clients to them over the years. They have consistently provided us and our clients with high quality services including worker health and safety plans, training programs, indoor air quality evaluations, mold assessments and remediation, construction site monitoring and general industrial hygiene consultation covering a variety of projects. We rely on Sterling & Associates for responsiveness and dependability that is provided with a high level of expertise."

William Frizzell, P.E. 
President/Principal Engineer
PES Environmental, Inc. 


“Adobe has been using Sterling & Associates for over ten years now. We have found them professional, responsive, and flexible in meeting our needs. Sterling played a key supporting role in Adobe’s achievement of their LEED-EB Platinum Certification. It’s a great partnership!”

George Denise, Sr.
Global Account Manager, Corporate Occupier & Investor Services
Cushman & Wakefield, on behalf of Adobe Systems Incorporated


"Sterling & Associates are proactive in their approach. They are responsive and take great care of the customer. I like that Sterling is a local company that demonstrates a team effort on each project, prices their services equitably, and provides consistent quality and personal service."

Ken Sullivan
Safety Officer
Devcon Construction Inc.


"When it comes to IAQ and other EH&S issues, I know I can trust Sterling & Associates to provide professional and efficient expert help. For the past several years, and as a representative for various organizations, I have confidently called on Sterling & Associates, and will continue to do so whenever a need arises. Their investigative, analytical and reporting work consistently meets my organizations’ need to complete its due diligence with regards to employee health and safety. Reports are always delivered in a timely fashion, and are easily understood. I would definitely recommend Sterling & Associates’ services."

April Kelsey
Facilities Coordinator
Netflix, Inc.