Notes
An email chain discussing the application of ‘fill criteria’ under the 401 permit conditions for the Port of Seattle’s Third Runway project. Ed Abbasi provides guidance on how different fill materials (topsoil, backfill, fill borrow, gravel) should be handled, including certification and QA/QC requirements. The original emails from Elizabeth Leavitt and Beth Clark initiated the discussion about which material types fall under Condition E of the 401 certification.
