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Disclaimer: While we have
taken care with the accuracy of the files accessible here they are not
"official" state rules in the sense that they can be used before a
court of law. Errors (including human errors) can occur from translation
between formats and the variations in display by web browsers. For assurance of accuracy consult documents from the
Washington State Code Reviser, such as published in the
Washington State Register
(WSR).
Download a copy immediately from the site or order a copy from our Records Office.
Administration | Air Quality | Grants and Funds | Hazardous Waste | Environmental Assessment | Noise | Nuclear Waste | SEPA | Shorelands and Environmental Assistance | Solid Waste | Spill Prevention, Preparedness and Response | Toxics Cleanup and Sediments | Water Quality | Water Resources | Well Drilling
Chapter 173-03 WAC - Public records
Chapter 173-04 WAC - Practice and procedure - Hearings board
Chapter 173-06 WAC - Delegation of powers
Chapter 173-400 WAC - General regulation for air pollution sources - View current rulemaking, View current rulemaking,
Chapter 173-401 WAC - Operating permit regulation
Chapter 173-405 WAC - Kraft pulping mills
Chapter 173-406 WAC - Acid rain regulation - View current rulemaking
Chapter 173-407 WAC - Carbon dioxide mitigation program for fossil-fueled thermal electric generating facilities - View current rulemaking
Chapter 173-410 WAC - Sulfite pulping mills
Chapter 173-415 WAC - Primary aluminum plants
Chapter 173-420 WAC - Conformity of transportation activities to air quality Implementation Plans
Chapter 173-421 WAC - Motor vehicle emission control systems
Chapter 173-422 WAC - Motor vehicle emission inspection
Chapter 173-423 WAC - Low emission vehicles
Chapter 173-425 WAC - Outdoor burning
Chapter 173-430 WAC - Agricultural burning
Chapter 173-433 WAC - Solid fuel burning devices
Chapter 173-434 WAC - Solid waste incinerator facilities
Chapter 173-435 WAC - Emergency episode plan
Chapter 173-450 WAC - Establishing requirements for the receipt of financial aid
Chapter 173-455 WAC – Air quality fee rule
Chapter 173-460 WAC - Controls for new sources of toxic air pollutants - View current rulemaking
Chapter 173-470 WAC - Ambient air quality standards for particulate matter
Chapter 173-474 WAC - Ambient air quality standards for sulfur oxides
Chapter 173-475 WAC - Ambient air quality standards for carbon monoxide, ozone, and nitrogen dioxide
Chapter 173-480 WAC - Ambient air quality standards and emission limits for radionuclides
Chapter 173-481 WAC - Ambient air quality and environmental standards for fluorides
Chapter 173-490 WAC - Emissions standards and controls for sources emitting volatile organic compounds (VOC)
Chapter 173-491 WAC - Emission sandards and controls for sources emitting gasoline vapors
Chapter 173-492 WAC - Motor fuel specifications for oxygenated gasoline
Chapter 173-495 WAC - Weather modification
Chapter 173–312 WAC - Coordinated prevention grants
Chapter 173–313 WAC - Local solid waste enforcement grant regulation
Chapter 173–321 WAC - Public participation grants
Chapter 173–322 WAC - Remedial action grants
Chapter 173–80 WAC - Limitations on use of Referendum 39 grant funds water pollution abatement
Chapter 173-95A WAC - Uses and limitations of the centennial clean water fund
Chapter 173–98 WAC - Uses and limitations of the water pollution control state revolving fund
Chapter 173–255 WAC - Limitations on use of Referendum 26 grant funds for water pollution abatement
Chapter 173–303 WAC - Dangerous waste regulations -View current rulemaking
Chapter 173–305 WAC - Hazardous waste fee regulation
Chapter 173–307 WAC - [Pollution prevention] plans
Chapter 173-333 WAC - Persistent biocumulative toxic substances rule
Chapter 173–50 WAC - Accreditation of environmental laboratories
Chapter 173–58 WAC - Sound level measurement procedures
Chapter 173–60 WAC - Maximum environmental noise levels
Chapter 173–62 WAC - Motor vehicle noise performance standards
Chapter 173–44 WAC - Fees – radioactive waste management facilities
Chapter 173–325 WAC - Low level radioactive waste disposal
Chapter 173–326 WAC - Commercial low–level radioactive waste disposal– site use permits
Chapter 173–328 WAC - Mixed waste management fees
Chapter 173–802 WAC - SEPA procedures
Chapter 173–806 WAC - Model ordinance
Chapter 197–11 WAC - SEPA Rules
Chapter 173–15 WAC - Permits for oil or natural gas exploration activities conducted from state marine waters
Chapter 173–18 WAC - Shoreline management act — streams and rivers constituting shorelines of the state
Chapter 173–20 WAC - Shoreline management act — lakes constituting shorelines of the state
Chapter 173–22 WAC - Adoptions of designations of wetlands associated with shorelines of the state
Chapter 173–26 WAC - State master program approval – Amendment procedures
Chapter 173–27 WAC - Shoreline management permit and enforcement procedures
Chapter 173–145 WAC - Administration of the flood control assistance account program
Chapter 173–158 WAC - Floodplain management
Chapter 173-700 WAC - Wetland mitigation bank certification - View current rule-making
Chapter 173–24 WAC - Tax exemptions and credits for pollution control facilities
Chapter 173–300 WAC - Certification of operators of solid waste incinerator and landfill facilities
Chapter 173–304 WAC - Minimum functional standards for solid waste handling
Chapter 173–306 WAC - Special incinerator ash management standards
Chapter 173–308 WAC - Biosolids management
Chapter 173–310 WAC - Litter receptacles
Chapter 173–312 WAC - Coordinated prevention grants
Chapter 173–313 WAC - Local solid waste enforcement grant regulation
Chapter 173–321 WAC - Public participation grants
Chapter 173–322 WAC - Remedial action grants
Chapter 173–330 WAC - Used automobile oil recycling sign requirement for automobile oil sellers
Chapter 173–331 WAC - Vehicle battery recycling
Chapter 173-333 WAC - Persistent bioaccumulative toxic substances (PBTs
Chapter 173-350 WAC - Solid waste handling standards
Chapter 173–351 WAC - Criteria for municipal solid waste landfills
Chapter 173-900 WAC - Electronic product recycling program
Transporters of Recycled Material - View new rulemaking
Chapter 173-180 WAC - Facility oil handling standards
Chapter 173-182 WAC - Oil spill contingency planning
Chapter 173–183 WAC - Pre-assessment screening and oil spill compensation schedule regulations
Chapter 173-184 WAC - Vessel oil transfer advance notice and containment requirements
Chapter 317–05 WAC - Definitions [Office of Marine Safety]
Chapter 317–31 WAC - Cargo and passenger vessels - Substantial risk
Chapter 317–40 WAC - Bunkering operations
Chapter 317–50 WAC - Financial responsibility for small tank barges and oil spill response barges
Chapter 173-204 WAC - Sediment management standards
Chapter 173–340 WAC - Model Toxics Control Act [MTCA] cleanup
Chapter 173–342 WAC - Additional taxable hazardous substance list
Chapter 173–360 WAC - Underground storage tank regulations
Chapter 173-40 WAC - Pollution Disclosure
Chapter 173–80 WAC - Limitations on use of Referendum 39 grant funds water pollution abatement
Chapter 173-95A WAC - Uses and limitations of the centennial clean water fund
Chapter 173–98 WAC - Uses and limitations of the water pollution control state revolving fund
Chapter 173–200 WAC - Water quality standards for ground waters of the state of Washington
Chapter 173–201A WAC - Water quality standards for surface waters of the state of Washington
Chapter 173-204 WAC - Sediment management standards
Chapter 173–205 WAC - Whole effluent toxicity testing and limits
Chapter 173–208 WAC - Grant of authority sewerage systems
Chapter 173–216 WAC - State waste discharge permit program
Chapter 173–218 WAC - Underground injection control program - View current rulemaking
Chapter 173–220 WAC - National pollutant discharge elimination system permit program
Chapter 173–219 WAC - Reclaimed water use - View current rulemaking
Chapter 173–221 WAC - Discharge standards and procedures for determining effluent limitations for domestic wastewater facilities
Chapter 173–221A WAC - Wastewater discharge standards and effluent limitations
Chapter 173–224 WAC - Wastewater discharge permit fees
Chapter 173–225 WAC - FWPCA—establishment of implementation procedures of application for certification
Chapter 173–226 WAC - Waste discharge general permit program
Chapter 173–230 WAC - Certification of operators of wastewater treatment plants
Chapter 173–240 WAC - Submission of plans and reports for construction of wastewater facilities
Chapter 173–245 WAC - Submission of plans and reports for construction and operation of combined sewer overflow reduction facilities
Chapter 173–255 WAC - Limitations on use of Referendum 26 grant funds for water pollution abatement
Chapter 173–270 WAC - Puget sound highway runoff program
Chapter 372–36 WAC - Columbia Basin Irrigation Area — sewage and waste
Chapter 372–52 WAC - Water districts requests for approvals and certifications of necessity to operate sewer districts
Chapter 372–68 WAC - Water pollution control and abatement plans for sewage drainage basins
Chapter 173–100 WAC - Ground water management areas and programs
Chapter 173–124 WAC - Quincy ground water management subarea and zones
Chapter 173–128A WAC - Odessa ground water management subarea
Chapter 173–130A WAC - Odessa ground water subarea management policy
Chapter 173–132 WAC - Duck Lake ground water management subarea
Chapter 173–134A WAC - Quincy ground water subarea management policy - View current rulemaking
Chapter 173–136 WAC - Establishment of a system of authorizing the withdrawal of artificially stored ground water embodied in an approved declaration under RCW 90.44.130 which are co-mingled with public ground waters in ground water areas subareas, and zones established under 90.44.130.
Chapter 173–150 WAC - Protection of withdrawal facilities associated with ground water rights
Chapter 173–152 WAC - Water rights - View current rulemaking
Chapter 173-153 WAC - Water conservancy boards
Chapter 173–154 WAC - Protection of upper aquifer zones
Chapter 173-157 WAC - Underground artificial storage and recovery
Chapter 173–166 WAC - Emergency drought relief
Chapter 173–170 WAC - Agricultural water supply facilities
Chapter 173-173 WAC - Requirements for measuring and reporting water use
Chapter 173–175 WAC - Dam safety
Chapter 173–500 WAC - Water resources management program established pursuant to the Water Resources Act of 1971
Chapter 173–501 WAC - Instream resources protection program Nooksack River Basin - WRIA 1
(New rule) Chapter 173-502 WAC - Establishing a reservation for the beneficial use of rooftop rainwater in San Juan County WRIA 2 - View current rulemaking
Chapter 173-503 WAC - Instream Resources Protection Program – Lower and Upper Skagit WRIAs 3 and 4
(New rule) Chapter 173–503a WAC - Samish River Sub-basin Instream Resources Protection Program – Lower and Upper Skagit Water Resources Inventory Area, WRIAs 3 and 4 - View current rulemaking
Chapter 173-505 WAC - Instream resources protection program - Stillaguamish River Basin - WRIA 5
Chapter 173–507 WAC - Instream resources protection program - Snohomish River Basin - WRIA 7
Chapter 173–508 WAC - Instream resources protection program - Cedar–Sammamish Basin - WRIA 8
Chapter 173–509 WAC - Instream resources protection program - Green–Duwamish River Basin- WRIA 9
Chapter 173–510 WAC - Instream resources protection program - Puyallup River Basin - WRIA 10
Chapter 173–511 WAC - Instream resources protection program - Nisqually River Basin - WRIA 11
Chapter 173–512 WAC - Instream resources protection program - Chambers–Clover Creek Basin - WRIA 12
Chapter 173–513 WAC - Instream Resources Protection Program Deschutes River Basin - WRIA 13
Chapter 173–514 WAC - Instream resources protection program - Kennedy-Goldsbourgh Basin - WRIA 14
Chapter 173–515 WAC - Instream resources protection program - Kitsap - WRIA 15
Chapter 173-517 WAC - Instream resources protection and watershed management program - Quilcene-Snow - WRIA 17 - View current rulemaking
Chapter 173-518 WAC - Instream resources protection and watershed management program - Elwha-Dungeness - WRIA 18 - View current rulemaking
Chapter 173–522 WAC - Water resources program Chehalis River basin - WRIA 22 and 23
Chapter 173-525 WAC - Grays-Elochoman Instream resources protection and watershed management program - WRIA 25 - View current rulemaking
Chapter 173-526 WAC - Cowlitz Instream resources protection and watershed management program - WRIA 26 - View current rulemaking
Chapter 173-527 WAC - Lewis Instream resources protection and watershed management program - WRIA 27 - View current rulemaking
Chapter 173-528 WAC - Salmon-Washougal Instream resources protection and watershed management program - WRIA 28 - View current rule-making
Chapter 173–531A WAC - Water resources program for John Day–McNary Pools reach of the Columbia River - WRIA 31 and parts of 32, 33, 36, 37
Chapter 173–532 WAC - Water resources program in the Walla Walla River basin - WRIA 32
Chapter 173–545 WAC - Instream resources protection program - Wenatchee River basin - WRIA 45
Chapter 173-546 WAC - Entiat River Basin -WRIA 46
Chapter 173–548 WAC - Water resources program in the Methow River basin - WRIA 48
Chapter 173–549 WAC - Water resources program in the Okanogan River basin - WRIA 49
Chapter 173–555 WAC - Water resources program in the Little Spokane River basin - WRIA 55
Chapter 173–559 WAC - Water resources program in the Colville River basin - WRIA 59
Chapter 173–563 WAC - Instream resources protection program for the main stem of the Columbia River in Washington State - View current rulemaking
Chapter 173–564 WAC - Water resources management program for the main stem of the Snake River in Washington State
Chapter 173–590 WAC - Procedures relating to the reservation of water for future public water supply
Chapter 173–591 WAC - Reservation of future public water supply for Thurston County ground water reservation
Chapter 173–592 WAC - Reservation of future public water supply for Clark County Ground Water reservation
Chapter 508–12 WAC - Administration of surface and ground water codes - View current rulemaking
Chapter 508–14 WAC - Columbia Basin Project — ground waters
Chapter 173–160 WAC - Minimum standards for construction and maintenance of wells
Chapter 173–162 WAC - Regulation and licensing of water well contractors and operators
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