Search Results - Washington State Department of Ecology

Borrador de la Declaración del Impacto Ambiental para el proyecto propuesto de reducción de daños por inundaciones en la cuenca del Río Chehalis

Esta hoja de enfoque describe el proceso de revisión ambiental y el período de comentarios públicos con una visión general del proyecto propuesto por el solicitante.

https://ecology.wa.gov/chehalisdeis-focussheet-espanol

Error Analysis for Water Quality Policy 1-11: Pertaining to the Water Quality Assessment December 2016

Water Quality Policy 1-11 is the policy that guides listing decisions for Washington’s Water Quality Assessment to meet Clean Water Act requirements for sections 303(d) and 305(b). During updates to Policy 1-11 in 2012, several comments were received about the risk of listing errors for waters that were placed on the 303(d) list based on limited data.

https://ecology.wa.gov/erroranalysispolicy1-11

Bioassessment Alternatives Comments to support refinements to Water Quality Policy 1-11

2017 comments by interagency team about Bioassessment Alternatives to support refinements to Water Quality Policy 1-11, the Water Quality Assessment and Total Maximum Daily Load Programs

https://ecology.wa.gov/interagencyteambioassessaltscomment

WasteCharacterization2015-16

Washington's 2015-2016 waste characterization study samples landfills from across the state to estimate overall solid waste composition.

https://ecology.wa.gov/washington-waste-characterization-2015-2016

WasteCharacterization2020-2021

Washington's 2020-2021 waste characterization study samples landfills from across the state to estimate overall solid waste composition.

https://ecology.wa.gov/washington-waste-characterization-2020-2021

Historic 2010 Upland Fin-fish Hatching and Rearing General Permit

This is the 2010 general permit for upland fin-fish hatching and rearing general permit. This is a National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for discharges to water associated with upland fin-fish hatching and rearing activities.

https://ecology.wa.gov/2010permitfinal

Floodplain Habitat Assessment and Mitigation Regional Guidance for the Puget Sound Basin

This guidance document was developed by Region 10 of the Federal Emergency Management Agency, as part of its continuing effort to improve floodplain management practices and assist communities in meeting the requirements of the Endangered Species Act.

https://ecology.wa.gov/floodplain-habitat-assessment-and-mitigation-regio

2015 Fact Sheet for Upland Fin-fish Hatching and Rearing General Permit

This is a fact sheet for the 2015 Upland Fin-fish Hatching and Rearing General Permit. This fact sheet explains the nature of the discharges covered by the general permit, our decisions on limiting the pollutants in the wastewater, and the regulatory and technical bases for those decisions.

https://ecology.wa.gov/factsheetfinal12152015

Pilot Use Level Technologies Notice of Intent (application) form

Local governments with a National Pollutant Discharge Elimination System (NPDES) permit must submit this Notice of Intent Form to Ecology, and receive Ecology’s approval prior to installing a pilot-designated technology (except in retrofit situations).

https://ecology.wa.gov/puldnoi

Industrial Stormwater Monthly Site Inspection Form

Use this form for your monthly inspections if you are industrial stormwater permit holder. Inspections must be conducted by a person with the knowledge and skills to assess conditions and activities that could impact stormwater quality at the facility, and evaluate the effectiveness of best management practices required by this permit. Retain a copy of the completed and signed form.

https://ecology.wa.gov/industrial-stormwater-monthly-site-inspection-form

Ch173350_3rdPrelimDraft121516-PartOne.pdf

Part One: 010 Purpose, -020 Applicability, -021 Determination of solid waste, -025 Owner responsibilities for solid waste, -030 Effective dates, -040 Performance standards, -100 Definitions, and -200 Beneficial use permit exemptions.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-partone-pdf

Ch173350_3rdPrelimDraft121516-PartTwo.pdf

Part Two: 210 Recycling and material recovery facilities, -220 Composting facilities, -225 Other organic material handling activities, -230 Land application, -240 Energy recovery and incineration facilities, -250 Anaerobic digesters, and -300 On-site storage, collection and transportation standards.

https://ecology.wa.gov/ch173350_3rdprelimdraft121516-parttwo-pdf

Waste Treatment and Immobilization Plant Analytical Laboratory Public Comment Period Focus Sheet

This Class 3 permit modification (8C.2017.4D) focuses on the operations of the Analytical Laboratory (Lab) and provides the operating details for the Analytical Lab under the Direct-Feed Low-Activity Waste configuration.

https://ecology.wa.gov/focus-sheet-3a9ad83c09b26cfd707a988692e9ab96

Response to Comments: Modification of RCRA WTP Lab Operations

Response to Comments: Modification of the Hanford Facility Resource Conservation and Recovery Act Permit for the Treatment, Storage, and Disposal of Dangerous Waste, Part III, Operating Unit Group 10 (WA7890008967) Waste Treatment and Immobilization Plant Analytical Laboratory Operations, 24590-LAB-PCN-ENV-16-002

https://ecology.wa.gov/response-to-comments

Draft GAP Rule Conceptual Framework for Informal Review

This document provides a narrative description of the concepts being used to draft the GAP rule. It includes changes to the initial ideas presented by the Washington State Department of Ecology (Ecology) in five public webinars from June to November 2020, based on public input and feedback. This document provides information as of the time of release for informal comment.

https://ecology.wa.gov/draft-gap-rule-conceptual-framework-for-informal-r

Aquatic Invasive Species General Permit

The Aquatic Invasive Species General Permit covers the in-water treatment of aquatic invasive animal species and nonnative invasive marine algae. This permit will allow for the treatment of early infestations and for small localized projects that may lead to the eradication or containment of invasive species.

https://ecology.wa.gov/aipermit08082016

Aquatic Mosquito Control General Permit

The Aquatic Mosquito Control Permit is an important tool to protect public health and the environment. It protects water quality and allows spraying for both nuisance and disease-carrying mosquitoes. It allows mosquito control districts, local government and others to legally spray to control larvae and adult mosquitoes.

https://ecology.wa.gov/amcgppermit2015

EAGL Progress Report and Payment Request forms guidance

Guidance document for using the Ecology EAGL system for completing required project progress reports and payment requests for reimbursement

https://ecology.wa.gov/wqc-recipient-training-eagl-prpr-guidance

Tier 1 Calculator for Biomethane Organic Waste (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced biomethane from organic waste. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-biomethane-organic-waste-2

Tier 1 Calculator for Biomethane Sludge (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced biomethane from wastewater sludge. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-biomethane-sludge-wac-17-2

Tier 1 Calculator for Biomethane Sludge (WAC 173-424) 07-15-22

This is the (Tier 1) simplified calculator for conventionally-produced biomethane from wastewater sludge. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-biomethane-sludge-wac-17-1

Tier 1 Calculator for Biomethane Wastewater Sludge (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced biomethane from wastewater sludge. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-biomethane-sludge-wac-173-42

Tier 1 Calculator for LNG (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced liquid natural gas and liquid to compressed natural gas. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-lng-wac-173-424-11-28-22

Tier 1 Calculator for LNG (WAC 173-424) 07-15-22

This is the (Tier 1) simplified calculator for conventionally-produced liquid natural gas and liquid to compressed natural gas. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-lng-wac-173-424-07-15-22

Tier 1 Calculator for LNG (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced liquid natural gas and liquid to compressed natural gas. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-lng-wac-173-424-03-15-22

Tier 1 Calculator for Renewable Diesel (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced renewable diesel. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-renewable-diesel-wac-173-2

Tier 1 Calculator for Renewable Diesel (WAC 173-424) 07-18-22

This is the (Tier 1) simplified calculator for conventionally-produced renewable diesel. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-renewable-diesel-wac-173-1

Tier 1 Calculator for Renewable Diesel (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced renewable diesel. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-renewable-diesel-wac-173-424

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-2

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 07-15-22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-1

Tier 1 Calculator for Starch-Fiber Ethanol (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced starch and fiber ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-starch-fiber-ethanol-wac-173

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 11-28-22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethano-2

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 07-18-22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethano-1

Tier 1 Calculator for Sugarcane-Derived Ethanol (WAC 173-424) 03/15/22

This is the (Tier 1) simplified calculator for conventionally-produced sugarcane-derived ethanol. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-for-sugarcane-derived-ethanol-wa

Tier 1 calculator manual (WAC 173-424) 11-22

This is the November 2022 instruction manual for Tier 1 simplified carbon intensity calculators. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-manual-wac-173-424-11-22

Tier 1 calculator manual (WAC 173-424) 07-20

This is the instruction manual for Tier 1 simplified carbon intensity calculators. The calculator is used for fuel life cycle analysis for the Clean Fuels Program.

https://ecology.wa.gov/tier-1-calculator-manual-wac-173-424-07-20

Industrial Stormwater General Permit

We issued the Industrial Stormwater General Permit in 2014. This is a National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for stormwater discharges associated with industrial activities.

https://ecology.wa.gov/industrialstormwatergeneralpermit

Washington State RiskMAP 2016 Strategic Plan

This 2016 Strategic Plan compliments the 2016 Business Plan by detailing State agency involvement and what resources each agency provides to the risk map program.

https://ecology.wa.gov/washington-state-riskmap-2016-strategic-plan

Fact Sheet for the Sand and Gravel General Permit

Fact sheet for permitted discharges from Process Water, Stormwater, and Mine Dewatering Water Discharges Associated with Sand and Gravel Operations, Rock Quarries, and Similar Mining Facilities, Including Stockpiles of Mined Materials, Concrete Batch Operations and Hot Mix Asphalt Operations

https://ecology.wa.gov/2015factsheet

Construction Stormwater General Permit

Stormwater runoff from construction sites can carry muddy water, debris, and chemicals into local waterways. Sediments, chemicals, and debris can harm aquatic life and reduce water quality. Following the requirements in the Construction Stormwater General Permit (CSWGP) results in discharges that help control and reduce water pollution.

https://ecology.wa.gov/cswgpfinalmod2017

Port Orchard Limited Amendment Attachment A: Findings and Conclusions

Attachment A: Findings and Conclusions for Proposed Amendments. This document Ecology’s formal description of the local SMP update process and conclusions regarding consistency with state laws and rules.

https://ecology.wa.gov/portorclaattafincon

Construction Stormwater General Permit Fact Sheet

This is the detailed explanation of the authority and defensibility of the Construction Stormwater General Permit. This fact sheet is a companion document to the draft revised National Pollutant Discharge Elimination System (NPDES) and State Waste Discharge General Permit for Stormwater Discharges Associated with Construction Activity (Construction Stormwater General Permit).

https://ecology.wa.gov/factsheet2015

CSWGP High Turbidity/Low Transparency Reporting

Sites covered under the Construction Stormwater General Permit (Permit) must take specific reporting and adaptive management actions in order to comply with permit requirements when obtaining high turbidity results (greater than or equal to 250 Nephelometric Turbidity Units (NTUs)) or low transparency results (less than or equal to 6 centimeters).

https://ecology.wa.gov/highturbidity

Plate 2 (WAC 173-557; 173-555) 01/27/15

Plate 2 - Simplified surficial geology, generalized hydrogeologic sections, and surface geophysical transects, Spokane Valley–Rathdrum Prairie Aquifer WAC 173-557; 173-555 Water Resources Management Program (WRMP) for the Spokane River and Spokane Valley Rathdrum Prairie (SVRP) Aquifer and amendment to WAC 173-555-010.

https://ecology.wa.gov/plate-2-wac-173-557;-173-555-01-27-15

Treatment Systems for Contaminated Construction Runoff (TSCCR)

This spreadsheet shows treatment systems that may be effective in treating specific contaminants. Users should evaluate the effectiveness of any treatment system they plan to implement and confirm that the chosen treatment system does not cause or contribute to a violation of the water quality standards.

https://ecology.wa.gov/treatmentsystems

NORPAC Supplemental Fact Sheet

This supplemental fact sheet explains and documents the decisions the Department of Ecology (Ecology) made in drafting the proposed National Pollutant Discharge Elimination System (NPDES) permit modification for North Pacific Paper Company, LLC (NORPAC).

https://ecology.wa.gov/norpac-supplemental-fact-sheet

Annual Report 2023

The Washington State Mercury-Containing Lights Product Stewardship Program began on Jan. 1, 2015, for the collection and recycling of mercury-containing lights sold at retail. Pursuant to WAC 173-910-430, each stewardship organization must submit an annual report to the department describing the results of implementing the stewardship organization's plan for the prior calendar year.

https://ecology.wa.gov/annual-report-2023

SEPA determination of nonsignificance

This document is a determination of nonsignificance (DNS) in which Ecology has determined the proposed biosolids general permit will not have a probable significant adverse impact on the environment.

https://ecology.wa.gov/sepa-determination-of-nonsignificance-26201b433614b0478c7dbc8114f0a4ba

Simplot Feeders Draft Permit

Comment Period: April 10, 2025, 12 a.m. - June 11, 2025, 11:59 p.m.
We invite your comments on draft State Waste Discharge permit ST0501324 being issued to Simplot Feeders Concentrated Animal Feeding Operation (CAFO) located in Walla Walla County.

https://ecology.wa.gov/events/wq/simplot/simplot-feeders-public-notice

Public Hearing

Public Event: May 13, 2025, 5:30 p.m., in Online only
We will host a public hearing on Zoom on May 13, 2025 at 5:30 p.m.

https://ecology.wa.gov/events/wq/simplot/hearing