This July 2019 document compiles the Cleanup Rule comments received from the public, Ecology staff and Office of the Attorney General from 2009 through 2018.

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.

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

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

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

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.

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

This table summarizes the dates by which owners and operators of previously deferred underground storage tank systems installed on or before the effective date of the new rule, Chapter 173-360A WAC, need to comply with the requirements of the rule.

This table summarizes how long owners and operators of underground storage tank systems need to retain records of various regulated activities under the new rule, Chapter 173-360A WAC.

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.

This document identifies the differences between the new rule (Chapter 173-360A) and the repealed rule (Chapter 173-360). The changes are identified in the footnotes. This document also provides a crosswalk between the provisions in the new rule and the provisions in both the repealed rule and the federal rule.

There are some differences between the proposed Underground Storage Tank rule filed on January 24, 2018, and the adopted rule filed on July 18, 2018. This document identifies all of the changes Ecology made to the text of the proposed rule, including all deletions and additions.

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.

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

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.

This is the repealed rule language for WAC 173-360; WAC 173-360A, Underground Storage Tank (UST) Regulations.

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

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

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

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.