TagPCHB(607)

Exhibit 2033 placeholder page from Administrative Record AR 031165.01, indicating the exhibit was not present at the time of scanning. No substantive content available; document serves solely as a scanning gap marker within the administrative record.

Exhibit 2026 was not present at the time of scanning. Administrative Record reference AR 030913.01. No substantive content available; placeholder page only.

Administrative Record exhibit AR028118 is a placeholder page indicating the exhibit was still being copied and would be supplied later. No substantive content is present. Filed as EXH0791028118.

Administrative Record placeholder page AR028117 indicating the referenced exhibit was still being copied at time of filing and would be supplied later. No substantive content is present in this document.

Administrative Record placeholder page AR028115 indicating that the exhibit referenced at this location in the administrative record was still being copied and would be supplied later. No substantive content is present. Filed as part of an administrative record production, likely related to Sea-Tac Airport or Port of Seattle proceedings.

AR 028050 placeholder page indicating the exhibit was still being copied and would be supplied later. No substantive content is present. Administrative record document from PCHB or related proceeding, file reference EXH0781028050.

Administrative Record placeholder page AR 027880 indicating the exhibit referenced at this location in the record was still being copied and would be supplied later. No substantive content is present. Filed as EXH0766027880.

Placeholder page for exhibit AR027765 indicating the document was still being copied and would be supplied later. No substantive content is present. Administrative record exhibit placeholder associated with AR number 027765.

This research study examines how heavy metals in highway stormwater runoff behave as water flows off pavement, finding that most heavy metals remain dissolved rather than attaching to solid particles due to low alkalinity and short travel times on the pavement surface. The study, conducted on Interstate 75 in Cincinnati over two years, explores how best management practices like detention basins or infiltration trenches could be used to capture these metals before they reach receiving waters.

Reference list compiled by Peter Willing, Ph.D., of documents relied upon in testimony regarding the 401 Water Quality Certification for the Third Runway at Sea-Tac Airport. Sources cited include studies on highway runoff chemistry, heavy metals partitioning, urban stormwater BMPs, treatment wetlands, NPDES permits, and Port of Seattle annual stormwater monitoring reports (1998–2001). Key references