Board of Directors & Committees

The 11 individuals who comprise the CASQA Board of Directors are elected by the membership for staggered two-year terms, with a maximum of three consecutive terms. Officers of the Board are: Chair, Vice-Chair, Treasurer, and Secretary. Officers are elected by the Board of Directors and serve two–year terms. The Board meets bi-monthly at various locations throughout California and by conference call the other months. View the current Board of Directors' biographies below, as well as their term timelines. If you are a CASQA member and would like to help lead the direction of CASQA, consider running for the Board (elections occur each Fall).

The Board of Directors creates committees that accomplish the goals of CASQA, each consisting of two or more directors, and other persons that the directors may appoint. Standing Board Committees are: Audit, Awards, Bylaws, Events, Executive Program, Finance, Membership, and Vision. View details on the Board Committees below.


CASQA Organizational Chart (Dec 2020)
2021 Board of Directors Contact Information (July 2021)
Directors and Associated Terms (Sep 2021)
List of current and past Chairs of the California Stormwater Quality Task Force (SWQTF) and California Stormwater Quality Association (CASQA)
The Board Resources page can only be viewed by CASQA Board members who have logged into their account. If you are a Board member, log in to view the resources.

Board of Directors

Amanda Carr, Chair

Amanda Carr is the Deputy Director of OC Environmental Resources for the County of Orange. The County serves as the lead permittee for the 34 cities of Orange County under municipal NPDES permits issued by the Santa Ana and San Diego Regional Water Quality Control Boards. Amanda has 16 years of experience in water quality and stormwater regulation, with a focus on Total Maximum Daily Loads and municipal NPDES program development through collaborative stakeholder processes. She holds a Masters of Science in Environmental Science and a Masters of Public Affairs in Environmental Policy and Natural Resource Management from the Indiana University School of Public and Environmental Affairs.

Dalia FadlVice Chair

Dalia has a B.S. in Civil & Environmental Engineering from UC Berkeley and over 16 years of experience working as an engineer in the stormwater management and regulatory fields. In her current role, Dalia manages the Stormwater Division in the City of Rancho Cordova’s Public Works Department. Dalia has extensive knowledge and experience with stormwater quality regulations and National Pollutant Discharge Elimination System (NPDES) permit compliance. She is a registered engineer in the State of California.  

Richard Boon, Treasurer

Richard Boon is Chief of the Watershed Protection Division, Riverside County Flood Control and Water Conservation District. He has 29 years of experience in water quality protection and management gained in local and national government both in the United Kingdom and United States. Prior to joining the District in 2017, Richard managed the Orange County Stormwater Program. Richard served as CASQA Board Chair in 2012 and 2013.

Jamison Crosby, Secretary

Jamison Crosby is the Stormwater Program Manager for the Napa Countywide Stormwater Pollution Prevention Program where she assists 6 municipalities with NPDES permit compliance. She has 20 years of experience in municipal stormwater management and erosion and sediment control, working for both Phase I and Phase II stormwater programs and Caltrans. Ms. Crosby has a B.S. in Environmental Science from UC Riverside and a Certificate in Landscape Architecture from UC Berkeley Extension and is a registered CPESC. She has been involved with CASQA’s Phase II and Pesticides Subcommittees and in 2020 began her tenure on the CASQA Board of Directors. 

Ashli Desai, Director

Ashli is the President of Larry Walker Associates, an environmental engineering and science consulting firm specializing in water resources management. She has over 20 years of experience in assisting public agencies with Total Maximum Daily Loads, watershed planning, and stormwater management. Ashli supports municipalities in their efforts to address stormwater-related permitting and programmatic issues through an understanding of the interface between robust science, engineering, and emerging policy. Ashli received her B.S. in Earth Systems, Environmental Technology and M.S. in Civil and Environmental Engineering and Science from Stanford University.

Cathleen Garnand, Director

Cathleen manages the County of Santa Barbara’s Project Clean Water program, overseeing the County’s implementation of the NPDES Municipal General Permit. Cathleen has been a part of the County’s Project Clean Water program since 1999, is involved with the CASQA Phase II Subcommittee, and works closely with the Santa Barbara County Association of MS4 Managers and other Central Coast municipal permittees. Cathleen has a B.S. in Environmental Resources Engineering from Humboldt State University.

Mark Lombos, Director

Mark is a Principal Engineer with the Los Angeles County Public Works, Stormwater Quality Division. He has over 20 years of experience in the field of water resources and stormwater management, including hydrology, project management, and stormwater quality planning, all with Public Works. In his current role, he manages the County’s compliance with the MS4 Permit and TMDL requirements, which includes collaborating with ot her agencies for the funding and implementation of stormwater programs and projects. Mark received his B.S. degree in Civil and Environmental Engineering from the University of California, Irvine (Zot! Zot!) and is a registered Civil Engineer.

Rinta Perkins, Director

Rinta Perkins is the Compliance Division Manager for the City of Santa Clara. She has 17 years of experience in managing stormwater compliance, sustainable land use, hazardous, universal and non-hazardous waste management, fuel storage tanks, air permitting, safety and code enforcement programs. Rinta have represented local agencies’ interests and participated in regional initiatives and collaboration, including municipal regional permit negotiations. She received her B.S. degree in Industrial Engineering and a Master of Business Administration from California State University, Fresno.

Chris Sommers, Director

Chris is a Vice President at EOA, Inc., a small environmental engineering and science consulting firm based in the San Francisco Bay Area. Chris has over 20 years of experience assisting California public agencies in stormwater  and watershed management, with a focus on municipal stormwater, water quality monitoring, watershed assessment, Total Maximum Daily Loads, pollutant control programs, and program effectiveness evaluation. Chris holds a bachelor’s degree in environmental science from Indiana University and a Master of Science degree from Humboldt State University in Natural Resources Management.

Melanie Sotelo, Director

Melanie is an Associate Director of Environmental Services at CASC Engineering and Consulting, a civil and environmental engineering firm located in Southern California. Melanie has over 15 years of Phase I and Phase II stormwater program management experience, and has served as a consultant Stormwater Program Manager for a municipality in the Whitewater River Watershed since 2016. Additionally, Melanie has served as the Co-Chair of the Construction Subcommittee for the past several years. Melanie holds a B.S. in Environmental Science and M.S. in Environmental Engineering Systems from U.C. Riverside.

Dave Tamayo, Director

Dave Tamayo has been with Sacramento County’s Stormwater Program since 1995. In addition to being a CASQA Board member, he is chair of CASQA’s pesticides subcommittee. He’s been involved in many facets of stormwater, but for the last 15 years he’s had a focus on local, state, and federal pesticide and pest management policy. Dave is vice-president of the California Structural Pest Control Board, and an elected official as a Board member of the Sacramento Municipal Utility District.  He has a BA in zoology from UC Berkeley and an MS in entomology from the University of Florida.

Executive Director

Karen Cowan

Manages the day-to-day activities of CASQA, serves as the primary liaison with members, government agencies, and other organizations, and helps to set and achieve the vision for the future and growth of CASQA. 

Executive Director Transition Announcement

With deep appreciation for his years of outstanding leadership, the California Stormwater Quality Association (CASQA) Board of Directors announced that Geoff Brosseau has transitioned from the role of Executive Director to that of Executive Advisor, and Karen Cowan has assumed the role of Executive Director (effective January 1, 2021). 

On behalf of the Board of Directors, please see the press release announcing the CASQA Executive Director transition (Nov 12, 2020).


Committees of the Board of Directors


Oversees the annual audit of CASQA’s finances and policies and procedures, and preparation of tax returns.

Chair: Amanda Carr


Identifies and recognizes exemplary leadership, outstanding projects, activities, and contributions to the field of stormwater quality management

Chair: Jamison Crosby


Reviews the Bylaws annually and makes recommendations for revisions as necessary to ensure smooth and efficient operation of CASQA.

Chair: Jamison Crosby

Events and Communications

Ensures a coordinated approach is used to plan, design, and conduct all CASQA events, including the annual conferences, quarterly General Membership meetings / webcasts, and trainings. Plans the quarterly meetings / webcasts.

Chair: Melanie Sotelo

Executive Program

Comprises no more than twenty-seven (27) committee members and directs the technical work of the association through subcommittees.

Chair: Dalia Fadl


Manages CASQA’s fiscal resources, including proposing the annual operating budget and overseeing all financial transactions.

Chair: Richard Boon


Retain existing members, outreach to potential new members, and improve membership value.

Chair: Cathleen Garnand

Strategic Planning

Advises the Board of Directors on the strategic direction of CASQA. Oversees the implementation of the Strategic Plan and Vision within CASQA.

Chair: Ashli Desai