2024 CEPA Board of Directors

Rob Schimberg | President

Colorado Cleanup, Inc.

Mr. Schimberg has over 20 years of experience in the Environmental Services Industry, as well as experience in General Construction, Demolition, Renovation, Waste Management, Hazardous Materials Packaging, Transportation, and Soil Remediation. Rob also has a large depth of experience in working Emergency Response Management Teams for Asbestos, Lead, Mold and Hazardous Materials.

Education: BA Chemistry Marquette University 1993

James Devalois | Vice President


James R. DeValois is the president of KEMWest, Inc. He holds a Bachelor of Science degree in Geophysical Engineering from Colorado School of Mines and has worked in the environmental industry since 1992. Mr. DeValois has been certified in the Comprehensive Practice of Industrial Hygiene by the American Board of Industrial Hygiene since 2003. He specializes in fungal investigations and asbestos project management, as well as Indoor Air Quality and employee exposure monitoring. James is an avid home-brewer, a fair guitar player and a hack golfer.

George Robles | Treasurer

M. E. Training

George Robles has been in the environmental industry since 2005. Throughout the years he has performed the task of worker , supervisor and project manager. George is Co-owner of Meridian Environmental which has been in business since 2015. Meridian is an abatement contractor for mold, lead and asbestos. George has been a CDPHE state approved instructor for worker and supervisor disciplines and has been teaching initial and refresher courses since December 2013. George has taught primarily for M.E. Training where he is owner and training manager. In 2019 George co-founded M.E. Workforce which is a temporary labor provider for the abatement and demolition industries throughout Colorado.

Brandon Sinkbeil | Past President

DS Environmental Consulting, Inc.

Brandon grew up in western Montana and attended the School of Mines in Butte and the University of Montana, earning degrees in Society and Technology, English Literature, and German. After spending a couple of years in Europe, he moved to Colorado in 2005 and became a founding partner of DS Environmental Consulting. Brandon is tasked with business development and overseeing the day-to-day operations of a full-service environmental consulting firm.

Bonnie Begert

Jefferson County School District

Bonnie manages the district asbestos program including removal, disposal, inspection, and sampling. Her responsibilities include performing periodic building inspections and three year re-inspections, record keeping, and management plan updates. Bonnie is also responsible for responding to indoor air quality concerns and investigating causes and developing solutions. Other responsibilities include lead and IPM programs, stormwater compliance, radon testing, site safety inspections, and hazardous waste management and disposal.

Mike Griffin

Hillen Abatement

Mike began his career in the environmental industry in 1991, with 29 years of environmental experience he understands the abatement industry and emergency response. Originally employed with The Dow Chemical Company in the Business Development division, and EH&S Manager.   Mike is the Owner and President of Hillen Abatement. Mike holds a Bachelor of Science (BS), Business Administration and Management.

Matt Little

Anser Advisory

Matt grew up in Colorado, and graduated from Colorado State University with a B.S. in Environmental Health.  He enjoys running, camping, and hiking while exploring the beautiful country we live in.


Chris Lehman

DS Environmental Consulting, Inc.

Chris has been in the environmental industry since 2007. Starting in environmental remediation, Chris has a unique perspective in industrial hygiene that has facilitated a wide range of skills. Specializing in client development, project management and excellent customer service that has created a passion for continual development. Chris possesses a strong knowledge of State and Federal regulations in a wide variety of environmental disciplines including asbestos, lead, mold, radon, hazardous materials, and safety. Chris attended Colorado State University with a BS in Business Management and an AA in Hotel / Restaurant Management and Culinary Arts. As a Colorado native Chris enjoys skiing and being outdoors, creating culinary delights, spending time with his wife and 2 beautiful daughters, and is a fanatic for all the local sports teams.

Primo Navarette

Element Environmental

Primo is a Partner at  Element Environmental.  Element  Environmental is a group of highly experienced and certified personal to take on any size abatement project in the industry today.

John Peterson

GHP Environmental + Architecture

John joined GHP, Inc. in 2003 as an Environmental Specialist and beginning 2004 as a  trainer and project manager for GHP.  Prior to joining GHP, John worked at Orcom as a Programmer from 1998 – 2003.

John cleans up other people’s messes. The big scary messes. Asbestos, mold, you name it and John has seen it and remediated it.  Not only does John help GHP, Inc. clients clean up, he also trains our clients on how to avoid those messes in the first place. In fact, that’s his favorite part of the job – getting challenging questions from his students.

But John isn’t all work and no play. Hanging out in our Denver office has its perks for the avid fly fisherman and skier. Although John has a very serious job he’s always trying to lighten the mood and even incorporates a little comedy into his training programs. After all, his favorite quote is, “Don’t take life too seriously, you’ll never get out of it alive.”

Matthew Valdez

Keystone Environmental LLC

Tim Wieser

Peak Environmental

Mr. Wieser has over 27 years of experience within the environmental industry. His specialties include planning, directing, and coordinating all field operations. Duties and responsibilities include formulating policies, managing daily operations and planning the use of materials and human resources.

Danaya Wilson

CHC Training

Danaya was raised in the environmental industry. When Dan, her father, was working for Denver Public Schools, she remembers frequenting the educational facilities with him and following around in awe. She started working for Dan’s first company, Colorado Hazard Control, in 2007 after graduating with a Bachelor’s degree in Business, Marketing from the University of Colorado. Danaya held many roles within the company including Marketing Manager, Project Manager and Corporate Branch Manager, but it was her role of Training Program Manager that excited her the most. There was just something about having a part in helping students discover new ways of working that ignited her passion for instruction and course development.

In 2015, Danaya graduated from Colorado State University with a Master’s in Organizational Leadership, with an emphasis in Online Course Development and Instruction. She began to work on a website that would host online environmental training courses without losing the magic of live classroom events. CHC Training was born shortly thereafter.

Debra Scifo

Executive Director

Debra is a managing partner of OBS Consultants, providing business development and organizational strategies to small to medium sized businesses. Debra has spent the last 20 years working with not for profit Board of Directors to develop value and grow resources for their representative industry and memberships. I believe that delivering the tools business needs is best accomplished through a trade association, they are the best community to deliver resources, benefits and services to the industry they represent.