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King County Washington home

On-site Sewage/Septic System Technical Advisory Committee

About the On-site Sewage/Septic System Technical Advisory Committee

The On-site Sewage/Septic System (OSS) Technical Advisory Committee brings together industry partners and impacted parties to participate in OSS policy development and problem resolution. Their work contributes to a common understanding of OSS policies and best practices, and helps maximize the public health benefit provided by the King County OSS Programs.

King County On-Site Sewage System Technical Advisory Committee 2026 Members

  • George Streepy (Streepy Septic Design)
    A designer or engineer licensed by the State of Washington
  • Curtis Johnson (Bravo Enterprises)
    An installer certified by the health officer
  • Shelby Middling (GreenTree Dosing)
    An on-site system maintainer certified by the health officer
  • Peter Rusher (Evergreen Sanitation)
    An on-site system maintainer certified by the health officer (alternate)
  • Craig Belongia (G&N Septic)
    A pumper certified by the health officer
  • Rocky Anderson (ADC Wastewater)
    A Seattle Master Builders Association representative
  • Pam McCain (John L Scott)
    Seattle King County Association of Realtors representative
  • Scott Flaherty (Seattle Dive Tours)
    A representative of nonprofit, nonpartisan public affairs or environmental affairs organization
  • Vicky Navarro
    A representative of Urban Areas
  • Mary Wictor
    A representative of Urban Areas (alternate)
  • Pat Traum
    A consumer representing the King County Unincorporated Areas
  • Warren Iverson (Greater Maple Valley Unincorporated Area Council)
    A representative of commercial OSS owner
  • Daniel Valencia (Sammamish Plateau)
    A representative of a sewer utility district
  • Marla Oswald (City of Kirkland)
    A representative of a city stormwater program
  • Marissa Kingtalik (PHSKC)
    A field sanitarian
  • David Winfrey (Puyallup Tribe of Indians)
    Representatives of tribal agencies
  • Alison Schweitzer
    King County Department of Natural Resources and Parks
  • Dan Cardwell
    King County Department of Local Services
  • Cleo Neculae
    Washington State Department of Ecology
  • Roger Parker
    Washington State Department of Health

Upcoming meeting information

The On-site Sewage System Technical Advisory Committee meeting schedule will be listed below. Meetings are held via Zoom unless otherwise noted on meeting agendas. The committee's final agenda is prepared at least one week prior to each meeting.

Subcommittee for Community Member Septic Maintenance

This TAC Subcommittee will support the King County Local Management Plan update process to address community needs in septic maintenance.

If you have any questions or interest in the Subcommittee, please email Meagan Jackson at mejackson@kingcounty.gov

Public participation

All regular committee meetings are open to the public. During the meeting, members of the public can listen to committee member discussions about proposed policies and approaches. During the last 15 minutes of the meeting, you’ll have an opportunity to provide public comment.

Please be respectful and wait until the comment period to speak. The committee chair may order the removal of individuals who are interrupting the meeting.

Previous meeting materials

For materials from prior meetings not listed here, please email mejackson@kingcounty.gov