Ecology Site Map

• Home
• Air & Climate
  • Air quality
    • Smoke & fire
      • Agricultural burning
      • Burn bans
      • Health effects from smoke
      • Outdoor & residential burning
      • Wildfire smoke
      • Wood stove info
    • Vehicle emissions
      • Diesel emissions
        • Health effects from diesel pollution
      • Clean cars
      • Investing in cleaner transportation
        • VW clean transportation projects
        • VW federal settlement & state penalty
      • Emission checks ended
    • Business & industry requirements
      • Permits for burning & industrial
      • Federal power plant standards
      • GHG standards for power plants
      • Oil refinery requirements
    • Air quality targets
      • Air emissions inventory
      • Air quality standards
        • Carbon monoxide
        • Lead pollution
        • Nitrogen dioxide
        • Ozone pollution
        • Particle pollution
        • Sulfur dioxide
      • Outdoor dust management
      • Prevent nonattainment
      • Regional haze
    • Data centers
  • Reducing Greenhouse Gas Emissions
    • Clean Fuel Standard
      • Requirements
      • Generating credits
      • Benefits
      • Data & reports
      • Economic impacts
    • Tracking greenhouse gases
      • Mandatory greenhouse gas reports
      • State agency greenhouse gas reports
      • GHG inventories
    • Zero-emission vehicles (ZEV)
    • Hydrofluorocarbons
    • What you can do
  • Clean Energy Coordination
• Water & Shorelines
  • Water quality
    • Water improvement
      • Assessment of state waters 303d
        • Assessment policy 1-11
      • Straight to implementation
      • Total Maximum Daily Load process
        • Directory of improvement projects
          • Budd Inlet
          • Columbia & Snake River TMDL
          • Clarks Creek
          • Clover Creek
          • Deschutes River and tributaries
          • East Fork Lewis River
          • French and Pilchuck watersheds
          • Green-Duwamish Watershed pollutant loading assessment
          • Hangman Creek
          • Henderson Inlet multi-parameter TMDL
          • Lake Whatcom Watershed multi-parameter TMDL
          • Little Spokane River DO and pH TMDL
          • Mid-Yakima Basin Bacteria TMDL
          • North Ocean Beaches
          • Padilla Bay FC TMDL
          • Palouse
          • Puyallup
          • Sammamish River Temperature & Dissolved Oxygen TMDL
          • Soos Creek watershed fine sediment TMDL
          • Soos Creek multi-parameter TMDL
          • South Fork Nooksack
          • South Skagit Bay assessment
          • Spokane River
          • Whatcom Creek
          • Yakima watershed toxics reduction project
    • Water quality standards
      • Updates to the standards
      • Assistance
      • Designated uses
      • Criteria
      • Antidegradation
    • Water quality permits
      • Fees
      • Water Quality general permits
      • Water Quality individual permits
    • Stormwater & runoff
      • Agricultural runoff
      • Forestry runoff
      • Stormwater
    • Wastewater
      • Contaminants of Emerging Concern
      • Discharge standards & limits
    • Reclaimed water
    • Groundwater
      • Groundwater quality standards
      • Groundwater resources
        • Groundwater diagram
        • Groundwater information
      • Nitrate data & assessment
      • Protecting aquifers
        • Critical aquifer recharge areas
        • Lower Yakima Valley groundwater
    • Saltwater
      • BEACH program
        • Swimming tips
        • Beach list
        • For BEACH samplers
          • Notification flowchart
        • Swimming standard and water quality
        • Contact BEACH
    • Freshwater
      • Freshwater algae control
      • Studies
  • Water supply
    • Water availability
      • Statewide conditions
        • Drought response
        • Drought 2023
        • Water supply monitoring
      • In your watershed
      • Watershed look-up
      • Chamokane Creek
        • Frequently asked questions
      • Lake Chelan Reserve
    • Streamflow restoration
      • Watershed planning
      • Watershed plan archive
    • Water rights
      • Public posting
      • Adjudications
        • Acquavella
        • Nooksack
      • Water banks
        • Water banking grants
      • Trust water rights
      • Metering water use
      • Groundwater permit exemption
      • Case law
        • Hirst decision
        • Foster decision
        • Lummi settlement
      • Cost reimbursement
        • Lake Chelan CCR
      • Fees
      • RSS feeds for new applications
      • Water conservancy boards
      • Water right examiners
    • Wells
      • Information for drillers
        • Abandoned wells
        • Continuing education
        • Delegation reports & contacts
        • RSS feeds for well notice of intent
      • Testing drinking water
    • Water supply projects in Eastern Washington
      • Columbia River Basin projects
        • Lake Roosevelt water rights
        • Lake Sullivan water rights
        • Odessa groundwater replacement
      • Icicle Creek strategy
        • Eightmile Dam
      • Streamflow, fish passage & habitat projects
      • Walla Walla 2050
        • Strategic plan
      • Yakima River Basin projects
        • Yakima integrated plan
    • Dams
      • Info for the public
        • Contacts
        • Dams we regulate
          • Zosel Dam
        • Incidents & failures
        • Laws, regulations, & policies
        • Report an emergency
      • Info for dam owners
        • Applications, forms & templates
        • Earthquakes, floods, & wildfires
        • Emergency Action Plan
        • Fees
        • Guidance documents
        • Impacts on earthen dams
        • Inspections
        • Operations & maintenance manual
        • Permits
        • Selecting consultants
        • Unpermitted dams
      • Info for engineers
        • Engineering design
        • Project planning
        • Technical notes
    • Protecting stream flows
      • Instream flow implementation
        • Dungeness water management
        • Nooksack basin rule
        • Skagit River basin
          • Water supply
            • Mitigation program
          • History
          • Studies
        • Spokane River basin rule
        • Stillaguamish basin
    • Water recovery solutions
      • Aquifer storage, recovery & recharge
      • Rainwater collection
  • Puget Sound
    • Protecting orcas
      • Orca task force
      • How you can help orcas
    • Issues & problems
      • Acidification
      • Bacteria
      • Dissolved oxygen & nitrogen
      • Toxic chemicals
    • Helping Puget Sound
      • Clean up & restoration
      • Reducing nutrients
        • Nutrient pollution studies
        • Puget Sound Nutrient Reduction Project
      • Policy, regulation & federal funding
      • Preventing erosion
    • Sound science
      • Marine sediments
    • Watershed characterization project
      • Applying watershed characterization
    • No discharge zone
      • Commercial vessels
      • Pump Out, Don't Dump Out
        • Y-Valve education pilot
      • Frequently asked questions
      • Resources & studies
      • Why it matters
  • Shoreline & coastal management
    • Shoreline management
      • Shoreline Master Programs amendments
      • State approved Shoreline Master Programs
        • Asotin
        • Bainbridge Island Amendment 2018
        • Bainbridge Island Limited Amendment
        • Cathlamet
        • Clallam County
        • Clark County
        • Cle Elum
        • East Wenatchee
        • Eatonville
        • Ellensburg
        • Everson
        • Ferndale
        • Forks
        • Granite Falls
        • Index
        • Issaquah
        • Kalama
        • Lakewood
        • Montesano
        • Nooksack
        • North Bend
        • North Bonneville
        • Pacific
        • Pe Ell
        • Pierce County
        • Raymond
        • Reardan
        • Redmond
        • Rock Island
        • Rosalia
        • San Juan County
        • Shelton
        • Skagit Hamilton Lyman Coalition
        • South Prairie
        • Stevens County
        • Sumas
        • Toppenish
        • Wahkiakum County
        • Westport
        • Whatcom County 2019 amendment
        • Whatcom County Limited Amendment
      • Contacts
      • Shoreline Management Act
        • Shoreline Management Act jurisdiction
          • Federal and tribal activities
          • Ordinary high water mark
          • Shorelines of statewide significance
      • Shoreline planners toolbox
      • Shoreline laws, rules, and cases
        • Public Trust Doctrine
        • Shoreline Master Program guidelines
      • Shoreline Master Programs
        • Asotin
        • Bainbridge Island Amendment 2018
        • Bainbridge Island Limited Amendment
        • Cathlamet
        • Clallam County
        • Clark County
        • Cle Elum
        • East Wenatchee
        • Eatonville
        • Ellensburg
        • Everson
        • Ferndale
        • Forks
        • Granite Falls
        • Index
        • Issaquah
        • Kalama
        • Lakewood
        • Montesano
        • Nooksack
        • North Bend
        • North Bonneville
        • Pacific
        • Pe Ell
        • Pierce County
        • Raymond
        • Reardan
        • Redmond
        • Rock Island
        • Rosalia
        • San Juan County
        • Shelton
        • Skagit Hamilton Lyman Coalition
        • South Prairie
        • Stevens County
        • Sumas
        • Toppenish
        • Wahkiakum County
        • Westport
        • Whatcom County 2019 amendment
        • Whatcom County Limited Amendment
    • Coastal zone management
      • CZM program announcements
      • Program & policies
      • Federal consistency
      • Program enhancement
      • Program evaluation
    • Hazards
      • Floods & floodplain planning
        • Planning & regulation
        • Floodplains by Design
        • Risk MAP
          • What is Risk MAP
          • Floodplain planning for governments
          • Floodplain planning for homeowners
          • Washington state projects
      • Stream channel migration zones
      • Shoreline stabilization
      • Puget Sound landslides
      • Earthquakes & tsunamis
    • Chehalis Basin
      • Strategy
      • Aquatic Species Restoration Plan
      • Community flood assistance
      • EIS
    • Padilla Bay Reserve
      • About Padilla Bay
        • About the Reserve
        • Contact the Reserve
        • Facility tour
        • Get involved at the Reserve
        • History
        • Recreation
      • Shoreline education
        • Classes & events
        • Group visits
        • Kids page
        • Newsletter
        • Teacher resources
      • Research
      • Stewardship
    • Aquaculture
      • Net pens
      • Shellfish aquaculture
      • Shellfish Interagency Permitting Team
      • State guidance for net pens
    • Education & training
    • Ocean management
      • Marine spatial planning
  • Wetlands
    • Wetlands overview
    • Regulations
      • State regulations & applicant resources
        • Irrigation-influenced wetlands
        • Prior converted croplands
      • Local regulations
      • Federal regulations & Waters of the United States
    • Mitigation
      • Avoidance & minimization
      • Interagency guidance
      • Wetland mitigation banking
        • Mitigation bank projects
          • Bellingham
          • Blue Heron Slough
          • Chehalis Basin
          • Columbia River
          • Coweeman River
          • East Fork Lewis
          • Keller Farm
          • Kitsap
          • Long Beach
          • Lummi
          • Meadowcroft
          • Moses Lake Three Ponds
          • Nookachamps
          • North Fork Newaukum
          • Paine Field
          • Port of Seattle
          • Skagit Environmental
          • Skykomish Habitat
          • Snohomish Basin
          • Springbrook Creek
          • Terrace
          • Thom
          • Upper Clear Creek
          • Wapato Valley
          • Weatherwax
        • Become a bank sponsor
        • Public notices
        • Templates & guidance documents
        • Contacts
      • In-lieu fee mitigation
      • Advance mitigation
      • Monitoring requirements
      • Compliance
    • Tools & resources
      • Contacts by subject & region
      • Rating system
      • Delineation resources
      • Mapping resources
      • Hiring a qualified wetland professional
      • Best available science
      • Credit debit method
      • Function assessment project
      • National Wetland Condition Assessment
      • Wetland program plan
      • Wetlands & climate change
    • Educational resources
      • Functions & values of wetlands
• Waste & Toxics
  • Household waste & toxics
    • Toxic chemicals in your home
      • Safer Products for Washington resources
      • Healthy home guide
      • Recycling and disposal guide
    • Household hazardous waste
      • Find a disposal site
      • Moderate-risk waste data & reports
  • Business waste
    • Manage your waste
    • Pollution prevention services
    • Reports & fees
      • Hazardous waste generation fee
      • Hazardous waste planning fee
  • Nuclear waste
    • Hanford cleanup
      • Hanford cleanup process
        • Settlements and orders
        • Tri-Party Agreement
      • High level nuclear waste definition
      • Leaking tanks
      • Tank waste management
        • Tank waste monitoring & closure
        • Tank waste treatment plant
      • Protecting air & water
        • Air quality oversight
        • Groundwater monitoring
          • Groundwater contaminants
      • Public education
    • Public comment periods
    • Radioactive waste disposal
    • Permits that direct our Nuclear Waste Program
    • Natural resources protection
  • Reducing & recycling waste
    • How to recycle
      • Recycling locations @ 1-800-RECYCLE
    • Our recycling programs
      • Electronics: E-Cycle Washington
      • Paint stewardship: Paint Care Washington
      • Mercury lights: LightRecycle
        • Mercury lights guidance
      • Solar panels
      • Battery stewardship
    • Our waste reduction programs
      • Organic waste
        • Food waste reduction
          • Use Food Well Washington Plan
        • 2022 Organics Management Law
          • Organics management for businesses
        • Composting
        • Anaerobic digesters
      • Plastics
        • Compostable product labeling requirements
        • 2021 plastics law
          • Recycled content minimums
          • Single-use serviceware
            • Toolkit
          • Expanded polystyrene ban
        • Plastic bag ban
          • Toolkit
        • Plastics study
    • Biosolids
      • Learn about biosolids
        • Permit actions
          • Fire Mountain Farms
      • Program contacts
    • Strategic policy & planning
      • Recycling Development Center
      • Contamination reduction
      • Enacting legislation
        • 2022 legislation
        • 2021-legislation
        • 2018-2020-legislation
      • Environmentally preferable purchasing
  • Reducing toxic chemicals
    • Addressing priority toxic chemicals
      • 6PPD
      • PFAS
        • AFFF
        • Food packaging
        • Cleanup sites
        • Wastewater
      • PCBs
      • Phthalates
      • Flame retardants
      • Lead
      • Mercury
      • PAH
    • Green chemistry
      • Green chemistry for K-12 classroom
      • Green chemistry in higher education
    • Product Replacement Program
      • AFFF disposal
      • Automotive degreaser
      • PCB lights
      • Recreational foam
      • Replace PERC
      • Thermal receipts
    • Toxics studies
      • Source assessments
        • Toxic chemicals in juvenile Chinook salmon
    • Washington’s toxics in products laws
      • Antifouling boat paint laws
      • Better Brakes Law
      • Children's Safe Products Act
      • Mercury Education & Reduction Act
      • Safer Products for Washington
      • Toxics in firefighting law
  • Solid waste & litter
    • Solid waste
      • Litter prevention
        • Prevention history
        • Litter Prevention Partner Toolkit
      • Litter pickup
      • Paying for litter programs
      • Ecology Youth Corps
      • Litter studies
      • Litter laws
    • PPE disposal guidance
    • Litter
      • Litter prevention
        • Prevention history
        • Litter Prevention Partner Toolkit
      • Litter pickup
      • Paying for litter programs
      • Ecology Youth Corps
      • Litter studies
      • Litter laws
    • Waste tires
• Spills & Cleanup
  • Spills
    • Cleanup sites
      • Boeing Auburn Fabrication site
      • Bothell
      • Dangerous waste facility cleanup
      • Eastern Washington
      • Everett Smelter
        • Cleanup progress
        • Lowlands cleanup
        • Parks cleanup
        • Residential cleanup and sampling
        • Site history
      • Former orchard lands
        • Model remedies for former orchards
        • School & park cleanups
      • Lower Duwamish Waterway
        • Cleanup status
        • Latest information
        • Site history
        • Source control
          • Source control areas
        • Studies & reports
      • Puget Sound cleanup
        • Bellingham Bay
        • Budd Inlet
        • Everett area baywide
        • Fidalgo & Padilla baywide
        • Port Angeles Harbor
          • Port Angeles Harbor NRDA
            • NRDA administrative record
            • NRDA site overview
        • Port Gamble baywide
          • Habitat preservation & restoration
      • Rayonier Mill cleanup
        • Extent of contamination
        • Interim actions
        • Public involvement opportunities
        • Site background
        • Site cleanup work
      • TAAG
      • Tacoma Smelter
        • Soil sampling
        • Yard cleanup program
          • Updates
          • Soil replacement
        • Technical assistance
        • Real estate
        • Soil Safety Program
        • History & studies
      • UW Tacoma
        • Common questions
        • Current events
        • Vapor intrusion
    • Covid-19 Spills response
    • Sediment cleanups
      • Sediment staff contacts
      • Swift Creek
    • Oil spill prevention
      • Oil transportation in Washington
      • Risk assessment
      • Safety of Oil Transportation Act
        • Risk modeling
          • ERTV analysis
          • Tug escort analysis
          • Outreach documentation
      • Preventing spills
        • Fatigue bites
    • Spill preparedness & response
      • Preparing for spills
        • Protecting whales during oil spills
      • Responding to spill incidents
        • Spill incidents
      • Restoring resources after spills
    • Underground storage tanks
      • UST contact list
      • UST regulation overview
      • UST public record
    • Dirt Alert program
      • Healthy actions
      • Health effects of arsenic and lead
      • Soil sampling
      • Gardening tips
      • Acciones saludables
    • Rules directing our cleanup work
      • Model Toxics Control Act
        • Updating the cleanup rule
    • Business & industry requirements
    • Cleanup process
      • Cleanup options
      • Paying for cleanups
        • Hazardous Substance Tax
      • Ranking contaminated sites
    • Brownfields
      • Locate brownfields
      • Why redevelop brownfields
      • WA Brownfields Conference
      • Affordable housing
    • Natural resource damage assessment and restoration
      • NRDAR Council restoration projects
    • Voluntary Cleanup Program
      • Before you apply
      • Apply now
      • Working with VCP
      • Expedited VCP
• Regulations & Permits
  • Laws, rules, & rulemaking
    • Biosolids laws, rules, and support documents
    • Rulemaking
      • WAC 173-460 - Exploratory rulemaking
    • Closed rulemaking
      • WAC173-303 FAQ
    • Noise pollution
      • Noise pollution - FAQ for residents
      • Noise pollution - FAQ for local government
  • Plans & policies
    • Areas meeting and not meeting air standards
      • Sulfur dioxide designations
    • Contingency planning for oil industry
      • Approved contingency plan holders
      • Oil spill drills
      • Geographic response plans for oil spills
      • Spill management teams
      • Spill response plans for mobile oil facilities
      • Spills planning standards
      • Technical manuals
      • Primary response contractors
      • Spills Best Achievable Protection
      • Wildlife response service providers
      • Worldwide Response Resource List
    • Spill prevention operations manual for regulated facilities
    • Safe & effective threshold determination reports
    • Spills prevention plans for facilities
    • State implementation plans
      • Attainment SIPs
      • Infrastructure, rule, & program plans
      • Maintenance SIPs
      • Transportation conformity
    • Toxics cleanup policies
    • Washington state waste plan
      • About the plan
      • Local waste planning
    • Water rights & dam safety policies, procedures, & guidance
  • Guidance & technical assistance
    • About the air monitoring network
    • Aquatic weed control technical assistance
    • Better Brakes guidance
    • Clean up petroleum contamination
    • Cleanup report checklists & templates
    • Contained-in determinations
    • Contamination clean up tools
      • CLARC
        • Data tables
        • Latest news
        • Glossary
        • Guidance
    • Dam construction & modification guidance
    • Dam operation & maintenance guidance
    • Dangerous waste guidance
      • Dangerous waste basics
        • Designation
          • Get ready to designate
          • Is it exempt or excluded?
          • Is it listed?
          • What are the hazards (characteristics)?
          • Check Washington state-only criteria
        • Counting dangerous waste
        • Generator category
          • Small quantity generators
        • Dangerous waste containers
        • Label dangerous waste
          • Print free labels
        • Accumulation
        • Recordkeeping
        • Prepare for an inspection
      • Common dangerous waste
        • Aerosol cans
        • Antifreeze
        • Asbestos
        • Auto body shops
        • Auto recyclers
          • Automotive mercury switch removal
        • Batteries
        • Cadmium
        • Cleaners
        • Construction & demolition
          • PCBs in buildings
        • Dental waste
        • Dry cleaner waste
        • Electronic waste
        • Empty containers
        • Fertilizers
        • Lead waste
        • Lights & lamps
        • Mercury
        • Nicotine & cannabis waste
        • Paints & coatings
        • Pharmaceutical waste
          • Management options
          • Pharmaceutical waste codes
          • Frequently Asked Questions
        • Solvents
        • Solvent wipes
        • Treated wood waste
        • Universal waste
        • Used oil
      • Dispose, recycle or treat
        • Waste service providers
        • Treatment by generator
        • Financial assurance
          • Options
          • Types
          • Updates
    • Electronics (E-Cycle) - guidance and reports
      • Collectors
      • E-Cycle outreach materials
      • Local governments
      • Manufacturers
        • Administrative fee schedule
        • Prior years administrative fees
      • Processors
      • Retailers
      • Transporters
    • Empirical demonstrations & MTCA
    • Facility/Site database
    • Financial responsibility for oil spills
    • Fish consumption rates - technical support
    • Green purchasing for businesses
      • Green products
    • Guidance for cannabis businesses
    • Guidance for floodplains - Critical Areas Ordinance
    • Guidance for oil industry
      • Vessel information
        • Prevention Resources
      • Marinas & Class 4 facilities
      • Facilities seismic measures
      • Facilities out of service
    • Guidance for residential cleanups
      • Common cleanup situations for homeowners & small businesses
      • Evaluation & cleanup for homeowners & small businesses
      • Investigating & reporting toxic releases
      • Property inspection checklist
      • Records search checklist
    • Information for air monitoring professionals
    • Learning from incidents and spills
    • Managing moderate risk waste guidance (EPA)
      • HHW-type waste not exempt from non-household generators
    • Mercury lights guidance
    • Moderate risk waste facility guidance
    • MTCA model remedies
      • Model remedies for former orchards
      • No further actions
    • Municipal water law
    • Pollution prevention
      • Pollution prevention assistance for SQGs
      • Pollution prevention for MQGs and LQGs
        • Meet our team
        • Efficiency services for manufacturing and industrial facilities
      • Pollution prevention grants
    • Pollution prevention services
      • Pollution prevention assistance for SQGs
      • Pollution prevention for MQGs and LQGs
        • Meet our team
        • Efficiency services for manufacturing and industrial facilities
      • Pollution prevention grants
    • Recycled content products
    • Requirements for bunkering
    • Safer alternatives
      • Safer products for businesses
      • Tools for assessing chemicals and alternatives
      • Quick tool for assessing chemicals
    • Sediment technical resources for sediment cleanup
    • Shoreline Master Program handbook
    • Site register lists & data
    • Solid waste financing
    • Stormwater permittee guidance & resources
      • Emerging stormwater treatment technologies (TAPE)
      • Low Impact Development (LID) guidance
      • Stormwater manuals
        • Equivalent Stormwater Manuals for Municipal stormwater permits
        • Western Washington Hydrology Model
      • Municipal stormwater permit guidance
        • Reporting
        • Stormwater management program
      • Sand & Gravel Permit guidance
      • Guidance for contaminated water on construction sites
    • Terrestrial ecological evaluation
    • Toxic cleanup acronyms
    • Underground injection control program
      • Register UIC wells online
      • UIC registration requirements & information
      • Heat pump & air conditioning return flow wells
    • Used oil generators rules
    • Used oil processors rules
    • UST owner and operator resources
      • Underground storage tank closures
      • Underground Storage Tank new owner, new tank guidance
      • Underground Storage Tank service providers
        • UST electrical work
      • Underground Storage Tank operator certification training
        • Approved vendors
    • Vapor intrusion overview
    • Water metering
    • Water quality permits database
    • Water quality permits guidance
      • WQWebPortal guidance
    • Water rights search
    • Well construction & licensing system
    • Well report gateway
  • Permits & certifications
    • Overview of permitting
    • 401 Water quality certification
      • Certifications for hydropower licenses
        • Water power licensing fees
      • Non-hydropower 401 certifications
      • Certifications for NPDES federal permits
      • Shellfish aquaculture
    • Air Quality permits
      • Air operating permits
        • Permit Register
      • Air quality general orders
      • Burn permits
      • Notice of Construction permit
        • Health impact assessment of toxic air pollutants
      • Prevention of Significant Deterioration
    • Aquatic pesticide permits
      • Aquatic & Invasive Species Control general permit
      • Aquatic invasive species management
      • Aquatic mosquito control
      • Aquatic noxious weed control
      • Aquatic plant & algae management
      • Burrowing shrimp control (Imidacloprid)
      • Fisheries resource management
      • Invasive moth control
      • Irrigation system aquatic weed control
      • Zostera japonica eelgrass management
    • Biosolids permit system
    • Biosolids facilities: Fees, forms, & annual reports
    • Boatyard general permit
    • Bridge and Ferry Terminal Washing Permit
    • Certified water right examiner
    • Certification for incinerator & landfill operators
    • Certified Erosion & Sediment Control
    • Concentrated animal feeding operation
    • Combined Sewer Overflows (CSO)
    • Cruise ship memorandum of agreement (MOU)
    • Dam safety permit
    • Dangerous waste permits
    • EPA vessel general permit (graywater)
    • Hanford Federal Facility permits
    • Facilities training & certification
    • Fresh fruit packing general permit
    • Industrial facilities permits
      • Agrium Kennewick Fertilizer Operations
      • Air Liquide
      • Alcoa Wenatchee
      • BP Refinery
      • Columbia & Cowlitz Railway
      • Cosmo Specialty Fibers
      • Eagle US 2 LLC
      • Emerald Kalama Chemical
      • Georgia Pacific, Camas
      • Goldendale Energy
      • Hasa
      • HF Sinclair Puget Sound Refinery
      • Intalco
      • Matheson, Tri-Gas Anacortes
      • McKinley Paper
      • Mint Farm
      • Nippon Dynawave, Longview
      • NORPAC
      • Northwest Alloys, Addy
      • Northwest Alloys, Longview
      • Pacific Functional Fluids
      • Packaging Corporation of America
      • Phillips 66 Refinery
      • Port Townsend Paper
      • Puget Sound Energy Ferndale Generating Station
      • SeaPort Sound Terminal
      • Solvay Chemicals
      • Sonoco
      • Specialty Minerals-Longview
      • Tesoro Logistics, Anacortes
      • Tesoro Refinery
      • US Oil & Refining
      • WestRock, Longview
      • WestRock, Tacoma
      • Weyerhaeuser Lumber
    • Laboratory Accreditation
      • Applying for laboratory accreditation
      • How to choose an analytical laboratory
      • Lab accreditation contacts
      • Laboratory quality assurance manual review checklist
      • Manual and procedures for accredited laboratories
      • Methods update rule
      • Proficiency testing providers
      • Solid and chemical materials updates
      • Using digital reference thermometers in microbiology testing laboratories
    • Mineral prospecting and placer mining
    • Nutrient permit
    • PCCC
    • Radioactive Mixed Waste permits
    • Shoreline permits & enforcement
      • Northwest Innovation Works – Kalama
      • Restoration Relief Request – Tukwila
    • Solid waste permits
      • Beneficial use determinations
        • Beneficial use determinations registry
    • Sand & Gravel General Permit
      • Sand & Gravel General Permit history
    • Stormwater general permits
      • Construction stormwater permit
        • eCoverage Packet
        • Permit history
      • Industrial stormwater permit
        • eCoverage packet
      • Municipal stormwater general permits
        • Municipal stormwater permit reissuance
        • Municipal Stormwater Phase I Permit
        • Eastern Washington Phase II Municipal Stormwater Permit
        • Western Washington Phase II Municipal Stormwater Permit
        • Municipal stormwater permit history
        • WSDOT Municipal Stormwater Permit
    • Upland finfish permit
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        • La conservación del agua: Comienza contigo