Certified Monitoring Specialists

• Table of Contents [PDF]
• Certified Monitoring Specialist Application [PDF]

Designers

• Table of Contents [PDF]
• Designer List Application [PDF]
• Introduction to Designer Program [PDF]
• Chapter 196-33 WAC, Rules of Professional Practice for Licensees Designing On-Site Wastewater Treatment Systems
• Article I of the Thurston County Sanitary Code, General Provisions
• Thurston County Environmental Health Fee Schedule
• Sewage System Project Matrix [PDF]
• Additional Fees Required for Sewage System Design Reviews - ONST.07.POL.832 [PDF]
• Article IV of the Thurston county Sanitary Code, Sewage Disposal Regulations
• Thurston County Onsite Wastewater System Construction Manual [PDF] — Minimum standards and recommendations for the construction of onsite wastewater treatment and disposal systems in Thurston County
• Memorandum and Policy on Waivers [PDF]
• Policy on Expiration and Renewal of Sewage System CSAs - PRMT.POL.809-99-15-640 [PDF]
• Policy on Expiration and Renewal of Sewage System Applications and Permits - PRMT.POL.809.99 15-639 [PDF]
• Memorandum on Application of WSDOH Recommended Standards & Guidance for Many Different Systems [PDF]
• Standards and Guidance for Pressure Distribution Systems – July 2009 Version and Record Drawing Requirements – ONST.11.POL.802 [PDF]
• Interlacing/Fingering Drainfields Accepted Criteria –  ONST.11.POL.847 [PDF]
• Memorandum and Policy on Application of WSDOH Recommended Standards & Guidance for Sand Lined
  Trench Systems – ONST.09.POL.822 [PDF]
• Policy on Requirements for Siting of Glendon Biofilters – ONST.11.POL.819 [PDF]
• Memorandum on Article IV Clarification on Designs with Repair Applications [PDF]
• Policy on Repair and Certification of Failing Sewage Tanks – ONST.13.POL.607 [PDF]
• Use of Table VI for Sewage System Repairs and Modifications - Thurston County Policy – ONST.12.POL.814 [PDF]
• Requirements for by-passing an Intermittent Sand Filter – ONST.09.POL.845 [PDF]
• Requirements for Rebuilding Mounds and Intermittent Sand Filters - Thurston County Policy –
  ONST.12.POL.853 [PDF]

Installers

Installer Packet

• Table of Contents [PDF]
• Certified Installer Application [PDF]
• Procedures for Certification as Sewage System Installer in Thurston County [PDF]
• Thurston County Environmental Health Fee Schedule
• Article IV Rules and Regulations Governing Treatment and Dispersal of Sewage [PDF]
• Thurston County Onsite Wastewater System Construction Manual [PDF] — Minimum standards and recommendations for the construction of onsite wastewater treatment and disposal systems in Thurston County
• Department of Ecology's "Criteria for Sewage System Works Design" - DOE Website (567 page document)
• Chapter 246-272A WAC, On-Site Sewage Systems [PDF] - DOH Document
• Standards and Guidance for Pressure Distribution System - Thurston County Policy Number ONST.11.POL.802 [PDF]
• Pressure Distribution System Recommended Standards and Guidance - July 2012 [PDF] - DOH Document
• Standards and Guidance for Sand Lined Trench System - Thurston County Policy Number ONST.09.POL.822 [PDF]
• Recommended Standards and Guidance for Sand Lined Trench System - July 2012 [PDF] - DOH Document
• Recommended Standards and Guidance for Intermittent Sand Filter System - July 2012 [PDF] - DOH Document
• Recommended Standards and Guidance for Mound System - July 2012 [PDF] - DOH Document
• Miscellaneous Info and Requirements Memo dated 2-11-03 [PDF]
• Miscellaneous Items Memo dated 2-4-04 [PDF]
• County Changes and Requirement Update Memo dated 12-22-06 [PDF]
• Solids Pump Tanks Memo dated 6-29-07 [PDF]
• Environmental Health Updates Memo dated 1-4-10 [PDF]
• Proper Abandonment of Septic Tanks dated 8-29-11 [PDF]
• Repair and Certification of Failing Sewage Tanks - Thurston County Policy Number ONST.13.POL.607 [PDF]

Pumpers

Pumper Packet

• Table of Contents [PDF]
• Cover Letter [PDF]
• Certified Sewage System Pumper Application Form [PDF]
• Pumper and Pumper Firm Performance Expectations [PDF]
• Summary of Septic System Operation and Maintenance Program for the Henderson Watershed Protection Area [PDF]
• Thurston County Septic Tank Pumpers' Manual [PDF]
• Article IV Section 23.3 Pumping Firm [PDF] — taken from the Thurston County Sanitary Code
• List of Approved On-site Sewage Disposal System Additives [PDF] — WA Dept of Health
• Thurston County Septic Tank Pumper / Facility Inspection Report [PDF]
• Sample Information packet — information provided to septic system homeowners prior to having their septic systems inspected
• Septic Inspection and Pumping Guide [PDF]
• Inspecting Your Septic Tank, It's not so bad... really! [PDF]
• Understanding and Caring for Your Sand Filter System [PDF]
• Understanding and Caring for Your Septic Tank System [PDF]
• Understanding and Caring for Your Mound System [PDF]
• Understanding and Caring for Your Pressure Distribution System [PDF]
• Septic Tank Additives— Small Flows Quarterly, Winter 2002
• Your On-Site Sewage System [PDF] (Used as the holder for the handouts)