Technical Advisory Committee

IDTAC logoBackground

The Illegal Dumping Technical Advisory Committee (IDTAC) provides ongoing expertise for CalRecycle and the state of California, is comprised of voluntary members, and is not required to function under the statutory requirements of a legislative or department-created committee. Started as a Task Force in 2006, the group evolved into today’s technical advisory committee and relative subcommittees given the long-term problems associated with illegal dumping. The IDTAC continues to assess the extent and cost of the illegal dumping, while sharing their findings, best practices, and strategies in the Illegal Dumping Resources Toolbox.

2020 Work Plan

The IDTAC identified the need to update its original work plan. The 2020 Work Plan entails developing fresh resources and tools for jurisdictions, communities, contractors, and others to assist in addressing current illegal dumping issues.

Focused Topics have included Homeless Encampments and Abandoned Vehicles.


Subcommittees are comprised of IDTAC members and interested persons who assist the IDTAC on specific illegal dumping issues. Updates on subcommittee activities are provided during IDTAC meetings. To get involved in a subcommittee, please contact the subcommittee chair (see contact info in Committee Member table below) or

Get Involved

Attend quarterly meetings (listed below), join a subcommittee, share illegal dumping concerns and content via email or at meetings, contribute to the Illegal Dumping Toolbox, subscribe to the Illegal Dumping Listserv, become an IDTAC member, and/or email to start the conversation of how to get involved.

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Strategy Subcommittee (Chair: Tedd Ward)

Develop strategies for:

  • Guidance for creating and facilitating local and regional partnerships with public agencies, private entities, and/or non-profits
  • Measures for establishing and maintaining cleanup programs
  • Identifying available funding resources
  • Development of benchmarks or methods to gauge program effectiveness
  • Addressing and incorporating environmental justice into programs

Outreach Subcommittee (Chair: Vacant)

Develop concepts for:

  • Education and outreach methods for preventing illegal dumping, including measures to facilitate community involvement including reward programs
  • Property owners to address illegal dumping on their property
  • Effective tools for discouraging future incidents
  • Applications to report illegal dumping activities
  • Effective news and social media outreach and involvement to publicize illegal dumping convictions including case studies

Standards Subcommittee (Chair: Larry Sweetser)

Develop standards related to:

  • Cleanups of illegal dumping sites
  • Identify levels for training personnel involved in cleanups
  • Develop consistent data collection criteria
  • Identify guidance for reporting and tracking cleanup costs
  • Updating homeless encampments cleanup guidance
  • Health and safety measures

Enforcement Program Subcommittee (Co-Chairs: Gonzalo Barriga & Vacant)

Develop methods for creating effective enforcement tools including:

  • Available federal, state, local solid waste codes, ordinances, administrative orders, and other measures available as enforcement tools
  • Case studies on effective enforcement and deterrents to illegal dumping
  • Guidance on developing local Illegal Dumping Enforcement Officers and enforcement teams
  • Measures that can hinder implementation of enforcement programs and potential prosecution
  • Examples of how to document evidence successfully.
  • Information on effective surveillance systems

Group addresses general enforcement (program) inquires since many members detail enforcement strategies through other respective organizations. Group promotes training opportunities for the enforcement community and oversees the Toolbox Enforcement webpage.

Quick Links

IDTAC Meetings

Upcoming Technical Advisory Committee Meetings

June 5, 2024, 12:30–4:00 pm

Sign up for the Illegal Dumping listserv to receive updates about future meetings and illegal dumping resources – archive messages for additions, questions. Meetings are virtual unless otherwise specified.

Past Technical Advisory Committee Meetings

Technical Advisory Committee Members

For a list of past advisory committee/task force members and committee history, please see Illegal Dumping Task Force and Technical Advisory Committee History.

Committee MemberAffiliationContact
Larry Sweetser (Chair)Environmental Services Joint Powers
Gonzalo Barriga (Vice Chair)Metropolitan Water District of Southern
Erin Armstrong, representing Supervisor Nate MileyAlameda County/ California State Association of
Doug Kobold California Product Stewardship
Mark Azzouni,
Benjamin Schiesser
California Hazardous Materials Investigators Association (CHMIA),
Marr ChristianCity of San Bernardino Code
Mark De
PendingLeague of California Cities
Carlos DuqueCity of Elk Grove Public Works, Recycling and
Justine Fallon/Taylor GrimesMattress Recycling
Maria FerdinMonterey County Illegal Dumping Task
Christine Flowers/Cecile CarsonKeep California
Traci GlavesPublic Member
Rob HutselSan Diego River Park
Gary HarrisCity of Los Angeles Bureau of Street Services, Investigation and Enforcement
PendingSacramento County
Ted HortonPending
Jaron Brandon Supervisor Tuolumne
Nick LapisCalifornians Against
Avneet MahilCity of Manteca, Solid Waste Association of North
Eva MannCity of Richmond Code
Veronica PardoResource Recovery Coalition of
Heidi SanbornNational Stewardship Action
PendingDistrict Attorney(s), San Joaquin County
Tedd WardDel Norte Solid Waste Management
Sara Weaver California Conservation Corps Region
Olympia WilliamsCity of San Jose BeautifySJ
Tom MattsonCounty Engineers Association of
Jeff Lamoure, Jason PhillippeCalifornia Conference of Directors of Environmental Health (CCDEH), (alternate)

For more information contact: Illegal Dumping,