EXH0206018548

PCHBPollution Control Hearings Board of the State of Washington

General Issues: background on the review process - • Requirements for 401 certification: • "Reasonable assurance" • Interaction of Sections 401 and 402 of the federal Clean Water Act Specific Issues Related to Aquatic resource Protection: to be resolved as part of Ecology's 401 review- • Determine direct, indirect, and cumulative impacts and identify necessary mitigation • Determine compliance with other associated aquatic resource-related regulations • Determine standards for "clean fill" material • Develop an acceptable stormwater plan • Develop an acceptable streamflow augmentation plan • Develop an acceptable wetland impacts and mitigation GENERAL ISSUES: - My primary job duty has been to ensure that our 401 decisions result in clean water. For most proposed projects, this means looking at the full range of known or anticipated impacts associated with the construction and operation of a project, reviewing those impacts against the water quality standards, and determining if the standards will be met and what permit conditions are needed to ensure they are met. With regards to the proposed SeaTac expansion, the intent of my review throughout the process was to develop a fully defensible 401 decision to ensure that applicable water quality regulations would be met. Requirements for 401 certification: The basic requirement of Ecology's review has remained the same throughout the history of this proposed project -to determine whether the proposal will meet the state's water quality standards. The three main questions to be answered with regards to meeting the standards are: • Will the proposed discharges (construction…
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