Board of Directors


Caleb Roberts, Co-Chair May 2023 - Present

Board Members Since October 2022

Hailing from Milwaukee, Wisconsin, with a background in community organizing around issues of transportation, economic development, and affordable housing. Caleb is a graduate of the University of Texas at Austin with an M.S. in Community and Regional Planning and received his B.A. in Business Administration from the University of Wisconsin La Crosse. He currently works as a senior planner for Gap Strategies. He is a husband, a writer of science fiction, and a lifelong track athlete.

Evelyn Mayo, Co-Chair of the Board 2018 to present

Particulate Matter Education Committee Chair 2017-2018

Evelyn Mayo is a community educator and organizer on environmental justice and neighborhood equity issues. Her day job is with Paul Quinn College as the Urban Research Fellow and Professor focused on Land Use Planning and Environmental Justice. She has an Bachelor of Arts in Environmental Science and Race and Ethnicity from Columbia University, and finished her Masters in City and Regional Planning at UTA in May 2022. She is a loyal sister, avid painter and neighborhood gardener. Evelyn is a 2018 graduate of our College of Constructive Hell-Raising.


Cindy Hua, Chair of the Particulate Matter Education Committee 2019 to present

Cindy is a PhD candidate at SMU with a Masters in Sustainable Design and Bachelors in Biology. As a STEAM educator, Cindy is committed to  environmental justice and making science and data accessible to the public for advocacy efforts.


Satavia (Tae) Hopkins, Treasurer 2021 - present

Satavia is an Oak Cliff born-and-breed Air Force veteran who's now an independent project manager and consultant. As of 2021, she's also a new mom.


Misti O'Quinn, Joppa Community Liaison (2019 - present) & former Particulate Matter Education Committee Chair (2018-2019)

Misti is a Dallas native, mother, and the North Texas Sierra club/Beyond Coal organizer. She's Community Liaison for our Joppa Environmental Health Project and SharedAirDFW Network if volunteer monitor hosts.  Misti is a 2018 graduate of our College of Constructive Hell-Raising.


Essence O'Quinn, Youth Representation since 2020

Essence O'Quinn has been working with us as a youth volunteer and leader since 2020. She first got involved in the Shingle Mountain campaign as a theatre student, and is not pursuing her undergraduate degree at the University of North Texas, Denton. We love having her on board.


Laura Quintero-Chavez, Neighborhood Self-Defense Project Team since 2021

Laura started working with the Board on the West Dallas NSDP in 2021. She helped do outreach and engagement in the Singleton industrial corridor and has supported the GAFs Gotta Go/GAF Vete Ya campaign. She is a former DISD Architecture teacher, is pursuing her Masters in City and Regional Planning at UTA and currently works at Dallas Truth, Racial Healing and Transformation. Laura graduated from the College of Constructive Hell Raising in Spring 2022.

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Cresanda (Eka) Allen, Particulate Matter Education Committee Member Since 2017

Allen is the founder of the McCarty & Maathai Community Garden. In 2014 she started  Sankofa Science, which provides youth African centered curriculum and lab instruction.  For 2 years, Cresanda has served as a board member and Particulate Matter Committee member for Downwinders at Risk. Cresanda has published Soil Benders: An African­-centered Agricultural Lab & Activity Book. She continues to write to further develop her curriculum and enrichment programs. Allen is currently pursuing her Masters in Agricultural Science. Cresanda is a 2018 graduate of Downwinders' College of Constructive Hell-Raising.


Collin Yarborough, Board Member Since October 2022

Collin is a Dallas native and current PhD student at SMU’s Lyle School of Engineering. His research is focused on creating an equitable intersection of transportation and land use. In 2021, Collin Published “Paved A Way,” a book taking a historical look at the impacts of infrastructure, policy, and racism in shaping neighborhoods of color in Dallas. Prior to returning to school, Collin worked for seven years as an engineer and compliance manager in the utility industry in Texas. He serves on the boards of the Dallas Mexican American Historical League and Downwinders at Risk while volunteering in other environmental justice advocacy capacities across Dallas. On the side, Collin runs and bikes around Dallas and helps his mother with their non-profit cookie bakery.


Shannon Gribble Vorpahl, Particulate Matter Education Committee Member Since 2017

Shannon is an original member of our Particulate Matter Education and Training  Committee and portable air monitor Trainer.  Shannon is a 2018 graduate of our College of Constructive Hell-Raising.