Washington Administrative Code
2023 Archive

Chapter 173-340 WAC
Last Update: 8/23/23

MODEL TOXICS CONTROL ACT CLEANUP REGULATIONS
PDF of Chapter Digest
WAC Sections
PART 1—OVERALL CLEANUP PROCESS
173-340-100Purpose.
173-340-110Applicability.
173-340-120Overview.
173-340-130Administrative principles.
PART 2—DEFINITIONS AND USAGE
173-340-200Definitions.
173-340-210Usage.
PART 3—SITE REPORTS AND CLEANUP DECISIONS
173-340-300Site discovery and reporting.
173-340-310Initial investigation.
173-340-320Site hazard assessment and ranking.
173-340-330Contaminated sites list.
173-340-335No further action sites list.
173-340-340Program planning and assessment.
173-340-350Remedial investigation.
173-340-351Feasibility study.
173-340-355Development of cleanup action alternatives that include remediation levels.
173-340-357Quantitative risk assessment of cleanup action alternatives.
173-340-360Cleanup action requirements.
173-340-370Cleanup action expectations.
173-340-380Cleanup action plan.
173-340-390Model remedies.
PART 4—SITE CLEANUP AND MONITORING
173-340-400Cleanup action implementation.
173-340-410Compliance monitoring.
173-340-420Periodic review.
173-340-430Interim actions.
173-340-440Institutional controls.
173-340-450Releases from regulated underground storage tank systems.
PART 5—ADMINISTRATIVE PROCEDURES FOR REMEDIAL ACTIONS
173-340-500Determination of status as a potentially liable person.
173-340-510Administrative options for remedial actions.
173-340-515Independent remedial actions.
173-340-520Consent decrees.
173-340-530Agreed orders.
173-340-540Enforcement orders.
173-340-545Private rights of action.
173-340-550Payment of remedial action costs.
173-340-560Mixed funding.
PART 6—PUBLIC PARTICIPATION AND TRIBAL ENGAGEMENT
173-340-600Public notification and participation.
173-340-620Tribal engagement.
PART 7—CLEANUP STANDARDS
173-340-700Overview of cleanup standards.
173-340-702General policies.
173-340-703Selection of indicator hazardous substances.
173-340-704Use of Method A.
173-340-705Use of Method B.
173-340-706Use of Method C.
173-340-707Analytical considerations.
173-340-708Human health risk assessment procedures.
173-340-709Methods for defining background concentrations.
173-340-710Applicable local, state and federal laws.
173-340-720Groundwater cleanup standards.
173-340-730Surface water cleanup standards.
173-340-740Unrestricted land use soil cleanup standards.
173-340-745Soil cleanup standards for industrial properties.
173-340-747Deriving soil concentrations for groundwater protection.
173-340-7490Terrestrial ecological evaluation procedures.
173-340-7491Exclusions from a terrestrial ecological evaluation.
173-340-7492Simplified terrestrial ecological evaluation procedures.
173-340-7493Site-specific terrestrial ecological evaluation procedures.
173-340-7494Priority contaminants of ecological concern.
173-340-750Cleanup standards to protect air quality.
173-340-760Sediment cleanup standards.
PART 8—GENERAL PROVISIONS
173-340-800Property access.
173-340-810Worker health and safety.
173-340-815Cultural resource protection.
173-340-820Sampling and analysis plans.
173-340-830Sampling and analysis procedures.
173-340-840General submittal requirements.
173-340-850Recordkeeping requirements.
173-340-860Endangerment.
173-340-870Project coordinator.
173-340-880Emergency actions.
173-340-890Severability.
173-340-900Tables.
DISPOSITION OF SECTIONS FORMERLY CODIFIED IN THIS TITLE
173-340-010Purpose. [Statutory Authority: Chapter 70.105B RCW. WSR 88-13-036 (Order 88-40), § 173-340-010, filed 6/8/88.] Repealed by WSR 90-08-086, filed 4/3/90, effective 5/4/90. Statutory Authority: Chapter 70.105D RCW.
173-340-020Definitions. [Statutory Authority: Chapter 70.105B RCW. WSR 88-13-036 (Order 88-40), § 173-340-020, filed 6/8/88.] Repealed by WSR 90-08-086, filed 4/3/90, effective 5/4/90. Statutory Authority: Chapter 70.105D RCW.
173-340-030Emergency actions. [Statutory Authority: Chapter 70.105B RCW. WSR 88-13-036 (Order 88-40), § 173-340-030, filed 6/8/88.] Repealed by WSR 90-08-086, filed 4/3/90, effective 5/4/90. Statutory Authority: Chapter 70.105D RCW.
173-340-040Settlement procedures. [Statutory Authority: Chapter 70.105B RCW. WSR 88-13-036 (Order 88-40), § 173-340-040, filed 6/8/88.] Repealed by WSR 90-08-086, filed 4/3/90, effective 5/4/90. Statutory Authority: Chapter 70.105D RCW.
173-340-050State conducted remedial action—Notice. [Statutory Authority: Chapter 70.105B RCW. WSR 88-13-036 (Order 88-40), § 173-340-050, filed 6/8/88.] Repealed by WSR 90-08-086, filed 4/3/90, effective 5/4/90. Statutory Authority: Chapter 70.105D RCW.
173-340-140Deadlines. [Statutory Authority: Chapter 70.105D RCW. WSR 01-05-024 (Order 97-09A), § 173-340-140, filed 2/12/01, effective 8/15/01; WSR 90-08-086, § 173-340-140, filed 4/3/90, effective 5/4/90.] Repealed by WSR 23-17-159 (Order 18-09), filed 8/23/23, effective 1/1/24. Statutory Authority: Chapters 70A.305 and 70A.355 RCW.
173-340-610Regional citizens' advisory committees. [Statutory Authority: Chapter 70.105D RCW. WSR 01-05-024 (Order 97-09A), § 173-340-610, filed 2/12/01, effective 8/15/01; WSR 90-08-086, § 173-340-610, filed 4/3/90, effective 5/4/90.] Repealed by WSR 23-17-159 (Order 18-09), filed 8/23/23, effective 1/1/24. Statutory Authority: Chapters 70A.305 and 70A.355 RCW.