Troubleshooting guide with operating tips for common installation problems associated with compatibility with MS EXCEL 2000, 2003, 2007, 2010 versions.

This document provides a crosswalk between the provisions in the new Underground Storage Tank Rule and the provisions in both the repealed rule and the federal rule.

This document provides a summary of changes to the repealed chapter, WAC 173-360. Changes highlighted grey were made to be consistent with federal rule requirements in 40 C.F.R. Part 280 or to comply with state program approval (SPA) requirements in 40 C.F.R. Part 281.

This table identifies the underground storage tank system services requiring use of a service provider and the certification that a service provider must have to perform those services under the new rule, Chapter 173-360A WAC.

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.

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.

This document identifies the differences between the new rule (Chapter 173-360A) and the repealed rule (Chapter 173-360).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 This document also provides a crosswalk between the provisions in the new rule and the provisions in both the repealed rule and the federal rule.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

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

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.

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

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

This document identifies changes to the current rule, WAC 173-360, Underground Storage Tank (UST) Regulations, that are included in WAC 173-360A.

This document tracks changes between the preliminary draft of WAC 173-360A and the proposed rule of WAC 173-360A, Underground Storage Tank (UST) Regulations.

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

Before buying property, use the property inspection checklist to complete an onsite inspection.

Download CLARC data tables for information that helps site managers determine cleanup levels.

Policies and guidance interpret the MTCA cleanup law and help you clean up contaminated sites.

Spills to water must be reported immediately to help reduce impacts to the environment.