Regulations & Permits

We oversee many state and federal laws designed to protect Washington's land, air, and water. Rules and regulations that direct state agencies, local governments, businesses, and others on how to comply with relevant laws are compiled in the Washington Administrative Code. See our laws, rules, & rulemaking page for more information about our current rules and rulemaking.
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Air quality monitoring network
Learn about the air monitoring network that measures local air quality conditions and see the map interface for near real-time data.
Tools for cleaning up petroleum contaminated sites
We have online tools and guidance to help you clean up petroleum-contaminated sites.
Online tools for cleaning up sites
We have online tools and statistical packages to help you clean up contaminated sites.
Noise pollution
Learn more about how to manage noise pollution.
Our air quality implementation plan
The State Implementation Plan is an overarching plan to keep air clean.
Spill response plans for Class 2 mobile facilities
We require Class 2 mobile oil-handling facilities in Washington to have a spill response plan.
Contingency planning for oil industry
Oil-handling operations must have contingency plans describing how they would respond to oil spills.
Geographic Response Plans (GRPs)
GRPs, a Northwest Area Contingency Plan tool, guide early, localized actions when oil spills happen.
Operations manual requirements
Operations manuals help prevent spills during the transfer, storage, and handling of oil.
Safe and effective threshold determination reports
Safe and effective reports establish conditions for protecting open water with oil containment boom.
Oil spill prevention plans for facilities
Oil spill prevention plans reduce the risk of oil spills at large refineries and marine terminals.
Policies and guidance for site cleanups
Policies and guidance interpret the MTCA cleanup law and help you clean up contaminated sites.
State Solid and Hazardous Waste Plan
Washington state’s management plan for solid waste and toxic materials.
Information for air monitoring professionals
Standard operating procedures, quality assurance plans, and monitoring guidance for air monitoring professionals.
Aquatic weed control technical assistance
We provide advice on identifying, monitoring, and managing invasive freshwater aquatic plants.
Best Achievable Protection for spill response
Best Achievable Protection (BAP) is training, operations, and technologies for successful responses.
Biosolids permitting and forms
We issue permits and regulate biosolids production and use in Washington.
Contained-in determinations for contaminated soil and groundwater
This policy helps us determine how contaminated soil and groundwater is managed and disposed.
Dam construction & modification guidance
We provide guidance and technical notes for dam construction and modification.
Dam operation & maintenance guidance
We provide guidance to assist dam owners with operations and maintenance.
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