Regulations & Permits - Washington State Department of Ecology

Proposed Rule Text without Tracked Changes (WAC 173-340) 02/15/23

This document displays WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations, as if the proposed rule changes were adopted. This document does not track or footnote the changes.

https://ecology.wa.gov/proposed-rule-text-with-no-tracked-changes-to-curr

Proposed Rule Text with Tracked and Footnoted Changes (WAC 173-340) 02/15/23

This document tracks and footnotes proposed changes to WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/proposed-rule-text-with-tracked-and-footnoted-chan

MTCAStat97: Backgound Module

A statistical analysis tool / workbook for analyzing background data for sites cleaned up under the Model Toxics Control Act.

https://ecology.wa.gov/mtcastat97backgroundmodule

MTCAStat97: Site Module

A statistical analysis tool / workbook for calculating compliance statistics for sites cleaned up under the Model Toxics Control Act.

https://ecology.wa.gov/mtcastat97sitemodule

MTCASTtat97: Technical supplement #1

Statistical guidance for using MTCAStat97 for sites cleaned up under the Model Toxics Control Act.

https://ecology.wa.gov/mtcastattechsupplement

Rulemaking Announcement (WAC 173-340) 12/20/18

This is a rulemaking announcement (CR-101) for WAC 173-340, Model Toxics Control Act - Cleanup

https://ecology.wa.gov/rulemaking-announcement-wac-173-340-12-20-18

Rulemaking Proposal (WAC 173-340) 02/15/23

This is a rulemaking proposal (CR-102) for WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/rulemaking-proposal-wac-173-340-02-15-23

Package A - Natural Attenuation Tool (Modules 1,2,3)

A calculation tool for demonstrating natural attenuation of groundwater is occurring and help predict when groundwater cleanup levels will be met under the Model Toxics Control Act.

https://ecology.wa.gov/pkganaturalattenuation

Rulemaking proposed language (WAC 173-340) 02/15/23

This is proposed rule language for WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/rulemaking-proposed-language-wac-173-340-02-15-23

Package B - Natural Attenuation (Modules 4,5,6)

A calculation tool for demonstrating natural attenuation of groundwater is occurring and help predict when groundwater cleanup levels will be met under the Model Toxics Control Act.

https://ecology.wa.gov/pkgbnaturalattenuation

Public hearing presentation (WAC 173-360; 173-360A) 02/28/18

This is the presentation provided at the public hearings on the rulemaking proposal for the underground storage tank regulations (WAC 173-360; 173-360A). The hearings occurred on February 28, 2018 and March 2, 2018.

https://ecology.wa.gov/public-hearing-presentation-wac-173-360;-173-360a

Repealed rule language (WAC 173-360; WAC 173-360A) 07/17/18

This is the repealed rule language for WAC 173-360; WAC 173-360A, Underground Storage Tank (UST) Regulations.

https://ecology.wa.gov/repealed-rule-language-wac-173-360;-wac-173-360a

Rulemaking Adoption Notice (WAC 173-360; WAC 173-360A) 07/17/18

This is the rulemaking adoption (CR-103) WAC 173-360; WAC 173-360A, Underground Storage Tank (UST) Regulations.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-360;-wac-173-3

Rulemaking Adoption Notice (WAC 173-360; WAC 173-360A) 07/18/2018

This is a rulemaking adoption (CR-103) for WAC 173-360A, Underground Storage Tank Regulations.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-360;-wac-1-1

Rulemaking Adoption Notice (WAC 173-340) 08/23/23

This is a rulemaking adoption (CR-103) for WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/rulemaking-adoption-notice-wac-173-340-08-23-23

Adopted Rule Text with Tracked and Footnoted Changes to Current Rule (WAC 173-340) 08/23/23

This document tracks and footnotes adopted changes to current WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/adopted-rule-text-with-tracked-and-footnoted-changes-to-current-rule-wac-173-340-08-23-23

Adopted Rule Text with Tracked Changes to Proposed Rule (WAC 173-340) 08/23/23

This document tracks adopted changes to proposed WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations.

https://ecology.wa.gov/adopted-rule-text-with-tracked-changes-to-proposed-rule-wac-173-340-08-23-23

Adopted Rule Text without Tracked Changes (WAC 173-340) 08/23/23

This document displays WAC 173-340, Model Toxics Control Act (MTCA) Cleanup Regulations, with the adopted rule changes. This document does not track or footnote the changes.

https://ecology.wa.gov/adopted-rule-text-with-no-tracked-changes-wac-173-340-08-23-23

Common cleanup situations for homeowners and small businesses

Learn about common cleanup situations likely to affect home and small business owners.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/common-cleanup-situations-for-homeowners-small-b

FAQ: Evaluate options to clean up homes and small businesses

These FAQs help homeowners and small businesses evaluate cleanup options and complete cleanup work.

https://ecology.wa.gov/regulations-permits/guidance-technical-assistance/guidance-for-residential-cleanups/evaluation-cleanup-for-homeowners-small-busine