Oak_tree-xOur mission is to educate, advocate and act to protect and enhance San Luis Obispo County natural resources

We promote resilient ecosystems and healthy lifestyles in San Luis Obispo. We envision a conscious community that understands and values the essential inter-dependencies of natural systems, human health, and the local community which actively takes responsibility for a healthy environment on quality of all life in San Luis Obispo County.


45 Years of ECOSLO

45th Anniversary Celebration


Mary Ciesinski

Mary Ciesinski

Executive Director

Mary CiesinskiExecutive Director of ECOSLO, is a motivated nonprofit professional with business background and experience in the tech industry.  She is passionate about bringing sustainable organizational practices to nonprofits, elevating them to new levels of community engagement, which allows for operational growth in programs, services, and volunteer needs.  Mary has a life-long love for and dedication to the environment, our collective home.  When not working at ECOSLO, Mary can be found relaxing at the beach, enjoying a backyard bonfire with friends, or caring for her gardens of veggies, roses, and succulents.

Eden Knapp

Eden Knapp

AmeriCorps Volunteer Infrastructure Program (VIP) Fellow

Eden Knapp, AmeriCorps Volunteer Infrastructure Program (VIP) Fellow 2019-2020, is serving her second year in the AmeriCorps program, but her first year with ECOSLO.  She grew up in Huntington Beach, California and moved to San Luis Obispo in 2013 to attend Cal Poly.  Eden graduated from Cal Poly in 2017 with a Bachelors of Science in Anthropology & Geography and has been living in the area ever since.  She spent most of her childhood camping and backpacking all over California, Oregon, and Nevada so she is very excited to have the opportunity to give back to the environment.  When not serving through ECOSLO, Eden can be found roller skating or visiting a local movie theater.


Krista Burke

Krista Burke

Board Chair

Formerly the ECOSLO Membership and Volunteer Coordinator, Krista has moved from her staff position and has served on the Board of Directors for the past four years. Krista graduated from Cal Poly with a Bachelor of Arts in Communication Studies in 2014. Her favorite hiking trail is the Valencia Peak and favorite camping spot is on the Northern Coast at Patrick’s Point in Trinidad. Krista’s love for the outdoors and passion for the environment drew her to ECOSLO and continues to inspire her involvement on the board. Krista hopes to bring more people to the ECOSLO family and to make ECOSLO a bigger part of our community.

Nicole Sisneros

Nicole Sisneros


A California native, but a SLO transplant, Nicole moved to the area in July of 2013. Her passion for conservancy began during her childhood when she started writing letters to then-President Reagan regarding water recycling. Looking for ways to be involved in the community she calls home, Nicole joined the ECOSLO board in July 2018.
Bill Bradlee

Bill Bradlee

Board Member, Fundraising Committee Chair, Green Drinks

Bill Bradlee joined the board in December 2015. Bill has been doing nonprofit environmental work for for over twenty years. He’s worked with and volunteered for many nonprofits and currently works with The Interfaith Power & Light campaign. Bill completed his Master of Environmental Studies degree at the Evergreen State College. In 2007 he bicycled across the United States giving talks on climate change along the way. Now he mostly bicycles to the ocean to visit with the shorebirds.

Chris Hamma

Chris Hamma

Board Secretary, SLO Stewards

Chris is a longtime outdoorsman who grew up in San Diego County and has lived in San Luis Obispo County for nearly 15 years. In addition to obtaining BS and MS degrees in Natural Resources Management from Cal Poly SLO, he has worked for and volunteered with the U.S. Forest Service, National Park Service, SLO County Parks, and UC Berkeley Forestry, as well as spent several years working in the hotels and restaurants in Yosemite. Chris has served as a SLO Stewards docent with ECOSLO since 2015 and joined the Board of Directors in December 2017.

Andrea Biniskiewicz

Andrea Biniskiewicz

Vice Chair, Marketing Chair

Andrea is the former Social Media Strategist intern and current Marketing Committee Chair for ECOSLO. Her interest lies in increasing environmental awareness and community via digital media and valuable time spent outdoors. You can find her at a trailhead after work or enjoying the dog beach on the weekends!

Melissa Danehey

Melissa Danehey

Melissa is a nonprofit professional and native North Carolinian, whose love for the California coast drew her here in 2014. She has a BS in Animal Science/Nutrition and Masters in Nutritional Sciences. Her passion for local environment grew over the years after discovering her love for running, surfing and paddle boarding. In her spare time, Melissa also competes in ultra marathons, plays piano, and spends time with her teenage daughter and 2 dogs. She is also a foster/resource parent and a Big Sister.

ECOSLO is currently recruiting for new Board Members, specifically to focus in the following areas:

  • Business Partners & Event Sponsors
  • Event Fundraising
  • Accounting

If interested, please contact programs@ecoslo.org or call (805) 544-1777 for more info!

Updated May 2019


We thank former board members for their service and dedication to ECOSLO:

Jodee Bennett
Susan Christopher
Melody DeMeritt
Mike di Milo
John Ewan
Liz Scott-Graham
Nancy Graves
Alex Henige
Deborah Hillyard
Richard Krejsa
Laura Grace
Pam Heatherington

Carolyn Huddleston
Geoff Land
Tim LaSalle
Bob Lavelle
Sandra Marshall
Jan Marx
Christine Mulholland
Sean Murphy
Allyson Nakasone
Jim Patterson

Sandra Sarrouf
Scott Secrest
Sandi Sigurdson
David Slade
Noah Smukler
Chuck Tribbey
Pat Veesart
Dirk Walters
Mary White
Rosemary Wilvert
Cal Wilvert
Arlene Winn
Bob Wolf

If you are a former board member of ECOSLO and your name is not listed, please let us know!  You can contact us by phone or email – see our contact information below.  Thank you for your service and dedication to protecting SLO County’s natural resources.


Office Location & Hours

Office Address:

2830 McMillan Ave, Unit 2
San Luis Obispo, CA 93401

The nearest major intersection is Broad St. & Orcutt Rd.  Click here for Google Maps directions.

Office Hours: Typically we are open the following days & times:

9:00am – 2:00pm on Tuesdays
9:00am – 4:00pm on Wednesdays & Thursdays
9:00am – 2:00pm on Fridays


Call or Write

Phone: (805) 544-1777

Email: info@ecoslo.org

Mailing Address:

P.O. Box 1014
San Luis Obispo, CA 93406

Send an Email

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