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EXH AR026605: Seattle Master Plan Update — Natural Resources Mitigation Plan Changes (Auburn Grading Plan, June 28, 2001)

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This document summarizes changes made to the Port of Seattle Master Plan Update's Natural Resources Mitigation Plan to comply with a Water Quality Certification issued September 21, 2001. It outlines revisions to grading plans, culvert placements, wetland crossings, drainage controls, and planting schedules at the Auburn mitigation site, along with corresponding resolutions for each identified concern. The updates address issues such as water impoundment, erosion prevention, bald eagle habitat protection, and invasive species removal.

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Port Of Seattle summary document (Draft, January 2, 2002) listing changes to the Natural Resources Mitigation Plan (NRMP) made to comply with Water Quality Certification #1996-4-02325 (September 21, 2001) for the Seattle Master Plan Update improvements. Covers Revised Auburn Grading Plan dated June 28, 2001: five numbered comments and resolutions addressing culvert placement in northwest corner drainage swale, culvert in south central mitigation site (Sheets C4, C5), new drainage swale maintenance pathway culverts (Sheet C7.1), construction culverts for impounded water (Notes 6 and 7, Sheet C8), and revised grading plan addressing Appendix E items 1–4 (Sheets C3–C6). Also covers Sheets C6, C7, C8, TE1, L7, L8, L9, and Appendix E Auburn Wetland Mitigation including canary grass removal (Sheet C5). Administrative Record numbers AR026605–AR026607; document identifier 556-2912-001 (01/03), page 17 of 17.

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