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Adopted Rule - Summary - O&M Compliance Dates (WAC 173-360; WAC 173-360A) 07/17/18
This table summarizes the dates by which owners and operators of underground storage tanks systems installed on or before the effective date of the new rule, Chapter 173-360A WAC, need to comply with the new operation and maintenance requirements.
https://ecology.wa.gov/adopted-rule-summary-table-operation-and-maintenan
Summary Table: Operation and Maintenance Compliance Dates (WAC 173-360; WAC 173-360A) 01/24/18
This table summarizes the dates by which owners and operators of underground storage tanks (UST) systems installed on or before the effective date of the proposed rule, Chapter 173-360A WAC, would need to comply with the new operation and maintenance requirements specified in Part 4 of the rule.
https://ecology.wa.gov/summary-table-operation-and-maintenance-complianc
Summary of environmental penalties issued the first quarter of 2019
June 14, 2019 News release:
We issued $210,100 in 17 penalties of $1,000 or more in the first quarter of 2019.
https://ecology.wa.gov/about-us/who-we-are/news/2019/environmental-penalties-1st-quarter-2019
State and federal agencies respond to public comments, move forward on plans for cleaning up tank waste at Hanford Site
December 19, 2024 News release:
State and federal agencies responded today to public comments received on plans for treating and disposing of millions of gallons of tank waste stored in underground tanks at the Hanford Site.
https://ecology.wa.gov/about-us/who-we-are/news/2024/dec-19-holistic-agreement-responsiveness-summary
Environmental penalties issued for first half of 2025
October 15, 2025 News release:
The Washington Department of Ecology issued $794,804.89 in penalties of $1,000 or more from Jan. 1, 2025 – June 30, 2025.
https://ecology.wa.gov/about-us/who-we-are/news/2025/oct-15-penalties-for-first-half-of-2025
Summary of environmental penalties issued for 4th quarter of 2020
February 4, 2021 News release:
Ecology penalties over $1000 for the 4th quarter of 2020.
https://ecology.wa.gov/about-us/who-we-are/news/2021/feb-4-4th-quarter-penalties
Summary of environmental penalties issued in the second quarter of 2019
August 26, 2019 News release:
Summary of environmental penalties issued in the second quarter of 2019
https://ecology.wa.gov/about-us/who-we-are/news/2019/environmental-penalties-2nd-quarter-2019
Environmental penalties for fourth quarter 2019
February 24, 2020 News release:
Environmental penalties for fourth quarter 2019
https://ecology.wa.gov/about-us/who-we-are/news/2020/feb-24-4th-quarter-penalites
Environmental penalties for fourth quarter 2018
March 4, 2019 News release:
List of penalties for Ecology issued during the fourth quarter 2018
https://ecology.wa.gov/about-us/who-we-are/news/2019/march-4-environmental-penalties-for-fourth-quarter
Ecology invites comment on updates to toxic cleanup regulations
February 16, 2023 News release:
We invite the public to comment on proposed updates to toxic cleanup regulations. Proposed changes would improve the process for prioritizing, investigating, and cleaning up contaminated sites.
https://ecology.wa.gov/about-us/who-we-are/news/2023/mtca-rule-comment
Settlement reached to ensure access to critical Hanford Site data
September 14, 2023 News release:
The Washington state Department of Ecology will regain direct access to critical federal data about the Hanford Site following a settlement agreement with the U.S. Department of Energy.
https://ecology.wa.gov/about-us/who-we-are/news/2023/sept-14-settlement-reached-to-ensure-access-to-critical-hanford-site-data
Summary of environmental penalties issued for 1st quarter of 2021
April 26, 2021 News release:
We issued $82,300 in penalties of $1,000 or more from January through March of 2021.
https://ecology.wa.gov/about-us/who-we-are/news/2021/april-29-1st-quarter-penalties
Environmental penalties issued for the first quarter of 2022
May 11, 2022 News release:
Summary of penalties issued from January through March 2022.
https://ecology.wa.gov/about-us/who-we-are/news/2022/first-quarter-penalties-2022
Sunset storm drain incident
Sunset storm drain incident
https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/sunset-storm-drain-incident
Columbia River Biodiesel spill
Columbia River Biodiesel spill
https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/columbia-river-biodiesel-spill
Winlock warehouse fire
Winlock warehouse fire
https://ecology.wa.gov/spills-cleanup/spills/spill-preparedness-response/responding-to-spill-incidents/spill-incidents/winlock-warehouse-fire-2015
DeBocks Main Street Texaco
Comment Period: Oct. 10, 2025, 12 a.m. - Nov. 10, 2025, 11:59 p.m.
You are invited to review and comment on the plan to investigate contamination at this site.
You are invited to review and comment on the plan to investigate contamination at this site.
https://ecology.wa.gov/events/tcp/sitecommentperiod/debocks-main-street-texaco-aa822d3b81d8de06abc542860fba2c76
Chapter 173-360A WAC
This is the rulemaking page for Chapter 173-360A WAC.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-360a
Chapter 173-340 WAC
This is the rulemaking page for Chapter 173-340 WAC, Model Toxics Control Act Cleanup Regulations.
https://ecology.wa.gov/regulations-permits/laws-rules-rulemaking/closed-rulemaking/wac-173-340
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