Board Members


Gregg W Thomas

Division director over 43 scientists and engineers who are responsible for clean air, land, and water across the City and County of Denver. Meteorologist and environmental engineer by degrees.

Denver Department of Public Health and Environment
Contact: (720) 865-5413
[email protected]

Vice Chair

Ty Smith

Lesair Environmental, Inc.
11786 Shaffer Place, Unit 210, Littleton, CO 80127
(303) 904-2525
[email protected]


Ginger Fast

CDH Consulting, LLC
4600 W 60th Avenue Arvada, CO  80003
(303) 433-9788
[email protected]


Bethany Moffat


Bethany is an environmental consultant that focuses on air permitting, emission inventories, GHG reporting. Bethany has a Master of Applied Science in Environmental Management with a focus in energy and sustainability.

Applewood Environmental
Contact: (303) 981-0607
[email protected]

Past Chair

Joe Rubino

Joe is a Principal Scientist with 35 years of experience in environmental consulting, private industry, and government agencies. He has managed state and local permitting, environmental assessments and compliance projects for numerous markets including manufacturing, utilities (fossil fuel generation, transmission/ distribution, renewables), oil refineries, chemical plants, transportation, and higher education.

SLR International Corporation
Contact: (970) 549-0040
[email protected]

Board Members

Vincent DeCianne

Vincent is a Chemical and Petroleum Engineer with over 23 years of environmental consulting experience who has managed several water, waste, and air permitting and compliance projects across several disciplines including in the transpiration, oil and gas, water, and renewables market sectors.

Kleinfelder, Inc.
Contact: (303) 319-2456
[email protected]

Angelique Giraud

Angelique is an environmental scientist and resource economist with  experience in diverse systems and industries. She evaluates climate change risk and strategizes adaptive resource management to foster long-term business growth using her advanced quantitative and qualitative analytical skills. She specializes in addressing emerging environmental challenges of resource constraints and fluctuating regulatory and voluntary expectations.

Montrose Environmental
Contact: (401) 680-2158
[email protected]

Miriam Hacker

Oversees all air permit dispersion modeling review and related projects for the stationary source permitting program. Manages 9 staff to ensure tasks are completed efficiently and accurately.

Colorado Department of Public Health and Environment/ Air Pollution Control Division
Contact: [email protected]

Il Kim

Contact: (307) 752-2666

Over 10 years of experience in GHG inventories, emissions inventories, air permitting, ESG, sustainability, and environmental matters in many industries including oil and gas. Chemical engineer by degree and very outgoing.

Garrett Clemons
Denver, CO

Sergio Guerra, PhD
Colorado Department of Public Health and Environment

Lori Marquez
Barr Engineering Co.
(303) 278-3650
(303) 503-4735 (cell)

Sara Nuttall
RTP Environmental Associates, Inc.
(919) 845-1422 ext. 32 (work)
(720) 345-1188 (cell)