Chapter 246-272B WAC
LARGE ON-SITE SEWAGE SYSTEM REGULATIONS
Last Update: 5/26/11

WAC SECTIONS

PART 1: GENERAL PROVISIONS
246-272B-01000 Purpose and objectives.
246-272B-01100 Acronyms and definitions.
246-272B-01200 Applicability and relationship to other statutes and regulations.
246-272B-01300 General requirements.
PART 2: APPROVAL AND PERMITTING PROCESS
Subpart A - New Construction
246-272B-02000 Site review -- Predesign report, soil characterization, and site inspection.
246-272B-02050 Environmental review -- Site risk survey and hydrogeology report.
246-272B-02100 Engineering.
246-272B-02150 LOSS 14,500 gpd and below -- Operating permit application and approval to construct.
246-272B-02200 LOSS greater than 14,500 gpd -- Operating permit application.
246-272B-02250 LOSS greater than 14,500 gpd -- Public notice.
246-272B-02300 LOSS greater than 14,500 gpd -- Operating permit and approval to construct.
246-272B-02350 Construction.
Subpart B - First Department Operating Permit for Existing LOSS
246-272B-02400 LOSS constructed on or before July 1, 1984.
246-272B-02450 LOSS with current permit from department of ecology or local health jurisdiction.
246-272B-02500 LOSS constructed after July 1, 1984, without current operating or discharge permit.
Subpart C - Permitted LOSS
246-272B-02550 LOSS modifications.
246-272B-02650 Operating permit renewals.
246-272B-02700 Operating permit requirements and conditions.
PART 3: SITE AND ENVIRONMENTAL REVIEW REQUIREMENTS
Subpart A - Site Review
246-272B-03000 Site review -- Predesign report.
246-272B-03100 Site review -- Inspection.
Subpart B - Environmental Review
246-272B-03200 Environmental review -- Site risk survey.
246-272B-03300 Environmental review -- Hydrogeology report.
Subpart C - Site Standards
246-272B-03400 Soil characterization.
246-272B-03500 Minimum land area.
PART 4: ENGINEERING REQUIREMENTS
246-272B-04000 Engineering report.
246-272B-04100 Management plan.
246-272B-04200 Operations and maintenance manual.
246-272B-04300 Monitoring and reporting plan.
246-272B-04400 Plans and specifications.
PART 5: CONSTRUCTION REQUIREMENTS
246-272B-05000 Installer qualifications and responsibilities.
246-272B-05100 Construction oversight and testing.
246-272B-05200 Water tightness testing of sewage tanks.
246-272B-05300 Department final inspection.
246-272B-05400 Post-construction documentation.
PART 6: DESIGN AND TECHNICAL STANDARDS
Subpart A - General Requirements
246-272B-06000 General design requirements.
246-272B-06050 Horizontal setbacks.
246-272B-06100 Vertical separation.
246-272B-06150 Design flows.
246-272B-06200 Sewage characterization.
246-272B-06250 Treatment.
246-272B-06350 Drainfields.
246-272B-06400 Design requirements to allow monitoring and maintenance.
246-272B-06450 Sewage tanks.
246-272B-06500 Collection, conveyance, and other piping appurtenances.
Subpart B - Specific Technologies
246-272B-06550 Public domain and proprietary technologies.
246-272B-06600 Pressure distribution.
246-272B-06650 Subsurface drip systems.
246-272B-06700 Sand-lined trenches and beds.
246-272B-06750 Intermittent sand filters.
246-272B-06800 Recirculating gravel filters.
246-272B-06850 Cesspools and seepage pits.
246-272B-06900 Holding tank sewage systems.
PART 7: LOSS OPERATIONS REQUIREMENTS
Subpart A - Routine Operations
246-272B-07000 Management requirements.
246-272B-07050 Operations and maintenance requirements.
246-272B-07100 Department inspections.
246-272B-07150 Reliability and emergency response.
246-272B-07200 Operator qualifications and responsibilities.
246-272B-07250 Metering.
246-272B-07300 Sewage tank management.
Subpart B - LOSS Changes
246-272B-07400 Modifications.
246-272B-07450 Failures.
246-272B-07500 Abandonment.
246-272B-07550 Connection to a sanitary sewer system.
PART 8: WAIVERS, ENFORCEMENT, AND APPEALS
246-272B-08000 Waivers.
246-272B-08100 Enforcement.
246-272B-08200 Notice of decision, appeals, and adjudicative proceedings.
246-272B-08300 Third-party appeals to department permit decisions for LOSS over 14,500 gpd and adjudicative proceedings.
PART 9: SEVERABILITY
246-272B-09000 Severability.
DISPOSITIONS OF SECTIONS FORMERLY CODIFIED IN THIS CHAPTER
246-272B-00101 Purpose, objectives, and authority. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-00101, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-00501 Administration. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-00501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-01001 Definitions. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-01001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-03001 Applicability. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-03001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.02 0and chapter 70.118B RCW. 
246-272B-07001 Connection to public sewer system. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-07001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-08001 Application and approval process. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-08001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-09501 Location. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-09501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-11001 Soil and site evaluation. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-11001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-11501 Design. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-11501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-12501 Holding tank sewage systems. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-12501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-13501 Installation. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-13501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-15501 Operation and maintenance. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-15501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-16501 Repair of failures. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-16501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-17501 Expansions. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-17501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-18501 Abandonment. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-18501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-19501 Septage management. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-19501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-20501 Developments, subdivisions, and minimum land area requirements. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-20501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-21501 Areas of special concern. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-21501, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-24001 State advisory committee. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-24001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-25001 Waiver of state regulations. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-25001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-26001 Enforcement. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-26001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-27001 Notice of decision -- Adjudicative proceeding. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-27001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-28001 Severability. [Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-28001, filed 11/5/03, effective 12/6/03.]  Repealed by 11-12-050, filed 5/26/11, effective 7/1/11. Statutory Authority: RCW 70.118B.020 and chapter 70.118B RCW. 
246-272B-990 Fees. [Statutory Authority: RCW 43.70.110 and 43.70.250. 06-20-078, § 246-272B-990, filed 10/2/06, effective 1/1/07. Statutory Authority: RCW 43.20.050. 03-22-098, § 246-272B-990, filed 11/5/03, effective 12/6/03.]  Repealed by 10-16-108, filed 8/2/10, effective 9/2/10. Statutory Authority: RCW 43.70.110, 43.70.250, 43.20B.020, and 2010 c 37. Later promulgation, see chapter 246-272 WAC.