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Comment Period

New draft tool for assessing and ranking contaminated sites

Comment on the SHARP tool

March 1, 2023 - April 16, 2023, 11:59 p.m.

We invite you to comment on the tool we plan to use to identify which contaminated sites pose the greatest risk to people and other living things.

The proposed Model Toxics Control Act (MTCA) Cleanup Rule update requires that we replace the outdated Washington Ranking Method, or WARM. We’ve developed a new site hazard assessment and ranking process, or SHARP. To support this process we developed the SHARP tool. SHARP will also be a key part of our work to improve environmental equity under MTCA and the HEAL Act.

The SHARP tool calculates scores for potential exposure to contamination in soil, groundwater, surface water, sediment, and indoor air. It will also estimate the severity of that exposure.

We would like your comments on the contents of the SHARP tool. It is currently in Microsoft Excel format. When we have reviewed your comments and finalized the content, we will convert it into an application. We’ll develop policy about how we use the rankings as a separate step.

For more information visit the site ranking webpage or read our blog about the new process.

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Eileen Webb
Environmental Remediation Coordinator

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