Each client comes to us with a unique opportunity seeking strategic problem solving and solutions driven need. Our team has become known for working with our clients by providing specialized experience and expertise to deliver solutions each time. The core of each relationship is centered around trust through our reputation including holding our core values of professionalism, accountability, transparency, and honesty at the heart of everything we do.
Timothy R. McAuley, MS, PhD
Founder and CEO
Dr. McAuley is a leading authority and multi-award-winning environmental leader and recognized expert across various environmental disciplines. He is a highly respected and recognized expert in air quality and human health exposure and risk assessment. He has directed, managed, and consulted on numerous domestic and global environmental consulting and research studies, and has been invited to give several keynote speeches and has become a global resource for environmental forward thinking.
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“Tim is a knowledgable expert in his field, and superb in developing solutions for business that reflect regulatory requirements and market opportunities. His work is thorough, timely, and of excellent quality.”
David G. Kruczlnicki
High Peaks Strategic Business Advisor
“Tim has been pushing the envelope regarding perspective and approach to environmental his entire career. The environmental industry is full of people who can solve one problem, but only the truly special will take the time to create a plan to address ancillary impacts. Tim has the knowledge and skillset to bring creative and effective solutions to any issue.”
Risk Leader for Caesars Entertainment
“Tim and I worked together at a NY state school site. Tim’s tireless commitment to the client and their need to be fiscally responsible paired with his ability to keep the team focused on the original objectives of the investigation would make him a great choice for any client trying to navigate indoor air issues.”
Chief Executive Manager – TRM Geoenvironmental Engineer
Dr. McAuley is a dedicated professional and forward thinker who is clearly at the top of his field. He demonstrates a genuine concern for his clients and colleagues and he utilizes his strong work ethic and technical expertise to efficiently tackle projects. I highly recommend Tim and his colleagues at CHANGE.
Cottage + Castle Ventures Inc.
Contact Tim McAuley, MS, PhD
Susan Cahalan, PG, ISSP-SA, ALM
Ms. Cahalan is a geologist (PG), sustainability educator, project manager, and environmental scientist with more than 20 years of expertise in leading and conducting a full range of geological and environmental projects. She focuses on sustainability, assessment and remediation, NEPA, SAP, COP, EIA, G&G, EIS, Superfund, Brownfields, renewable energy (wind, geothermal and solar), groundwater resources, hazardous waste, health & safety and building sciences.
“Without hesitation, I highly recommend Susan Cahalan. She was an invaluable asset to our organization. She was an always-reliable take-charge leader who ably navigated tight deadlines and unforeseen problems with dedication, organization, and creativity. Her technical and technological fluency are matched by her engaging people skills and excellent communication. ”
Contact Susan Cahalan, PG, ISSP-SA, ALM
We are a team of industry recognized experts, environmental scientists, field researchers, published authors, and consulting professionals from around the world.
Our top-tier experts work together in partnership with clients to solve their most pressing and important environmental issues in a cost effective and highly professional way, and in doing so we create lasting relationships that continue to build sustainable results.