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 (Feb 2019)
2019 Board of Directors Contact Information (Mar 2019)
Board of Directors term timelines (Jan 2019)
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.


Geoff Brosseau, Executive Director: 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. 

Karen Cowan, Assistant Executive Director: Supports the Executive Director, provides additional resources to help set and achieve the vision, helps to grow CASQA as an organization, and acts in the Executive Director’s stead.

Board of Directors

Daniel Apt, Chair

Daniel Apt is President of Olaunu, a surface water quality company based in San Clemente, California. He has 21 years of experience in stormwater management and water quality and specializes in Low Impact Development, watershed planning, MS4permit assistance/program development, BMP planning and design for developments,and stormwater training. Mr. Apt received his Bachelors degree from the University ofCalifornia, Irvine and his Masters degree from the University of Miami. Mr. Apt serves as the Chair of the California Stormwater Quality Association Board of Directors, is Co-Developer of the California LID Web-portal, and is the consultant project manager for the Southern California Monitoring Coalition LID Evaluation and Analysis Network (SMC CLEAN).

Amanda Carr, Vice 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.

Mark Lombos, Treasurer

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 other 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. 

Cathleen Garnand, Secretary

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.

Jill Bicknell, Director

Jill Bicknell is a water resources engineer and manager at EOA, Inc. in Sunnyvale, CA, and serves as the Assistant Program Manager for the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP). She has worked extensively in the field of stormwater quality and flow controls, pollution prevention, watershed management, and permit compliance for over 25 years, specializing in assistance to municipal agencies with implementation of low impact development techniques, green infrastructure planning, stormwater treatment, and hydromodification management. She has also conducted numerous workshops and trainings on these topics throughout the state. Jill is currently leading SCVURPPP’s efforts to develop countywide tools for green infrastructure planning and to assist member agencies with development of local green infrastructure plans. Jill has represented SCVURPPP on the CASQA Board of Directors from 2005-2011 and from 2014 to the present, and served as CASQA Board Chair in 2016 and 2017.

Richard Boon, Director

Richard Boon is a Senior Flood Control Planner Chief of 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.

Brian Currier, Director

Brian holds B.S. and M.S. degrees in Environmental Engineering from the University of California, Davis, and is a California-licensed Professional Engineer. Brian has been involved in stormwater research since 1997. He is currently a research engineer with the Office of Water Programs and occasionally teaches for the Department of Civil Engineering at California State University, Sacramento.

Delyn Ellison-Lloyd, Director

Delyn graduated with a bachelor of science degree with an emphasis in biology from the University of Oregon. She worked for Sacramento County for 11 years, first in the Environmental Management Department as a hazardous materials specialist and then as an environmental compliance specialist in the County’s Business Environmental Resource Center. She returned to school and obtained her masters of science degree in civil engineering from California State University, Sacramento, and worked as a senior engineer with the City of Roseville’s Stormwater Management Program for 14 years. As of March 2019, Ms. Ellison-Lloyd is working for Municipal Consulting Group, a consulting firm based in Citrus Heights, California.

Sandy Mathews, Director

Sandy Mathews manages Larry Walker Associates’ Berkeley office and serves as a Project Manager for LWA’s work in the stormwater field. Sandy has more than 25 years of experience in developing and implementing water quality and stormwater compliance programs. She has developed and successfully implemented industrial, construction,and municipal stormwater programs. Sandy specializes in assisting agencies create compliance approaches and tools that integrate multiple stakeholder interests. Recently, Sandy has been assisting Phase II communities in Regions 2 and 5 plan for compliance with the Trash Amendments, including identifying and mapping priority land uses, developing preliminary cost estimates and assessing the feasibility of implementing track 1, and assisting stormwater program coordinators communicate the trash compliance needs to directors and elected officials.

Stephanie Reyna-Hiestand, Director

Stephanie has nearly 16 years of experience in both Storm Water and Water Efficiency Management. She is currently a Water Resources Analyst II with the City of Tracy where she is a Certified Professional in Erosion and Sediment Control (CPESC), a Qualified Stormwater Pollution Prevention Plan Developer/Practitioner (QSD/P) and a Grade I Conservation Practitioner. Stephanie administers, develops, enforces and implements the water quality and efficiency programs for compliance with federal, state and local regulatory requirements within the City. She assisted in the development of the San Joaquin Valley Stormwater Quality Partnership (SJVSWQP) and is one of the leading members in this organization. Stephanie has been a member of CASQA since 1999 with her involvement in the Public Information Public Participation Subcommittee and shortly thereafter became the Website Chair. Stephanie previously worked for San Joaquin County Department of Public Works  in the Solid Waste and Flood Control Divisions.  

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.


Committees of the Board of Directors


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

Chair: Daniel Apt


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

Chair: Mark Lombos


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

Chair: Cathleen Garnand


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: Delyn Ellison-Lloyd

Executive Program

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

Chair: Amanda Carr


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

Chair: Mark Lombos


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

Chair: Cathleen Garnand


Maintains the CASQA Vision, oversees development and achievement of annual objectives that support the Vision, and manages the relationship of the Vision to other organizations' strategies for stormwater (e.g., Water Boards' STORMS).

Chair: Richard Boon