Notes
Memorandum dated August 7, 2001, from Katie Walter (Shannon & Wilson, Inc.) to Ann Kenny (Washington State Department of Ecology) regarding draft 401 conditions for the Port Of Seattle Natural Resource Mitigation Plan (NRMP), marked Deliberative — Do Not Disclose. Covers Auburn mitigation site culvert placement issues from the June 28, 2001 revised grading plan, including mislocated culvert in south central portion, northwest corner drainage swale culvert sizing, and two additional culverts needed along new drainage swale at southwestern basin. Performance standards section addresses 15-year monitoring update, invasive plant species cover limits (no greater than 10%), addition of hedge bindweed (Convolvulus sepium), giant knotweed (Polygonum sachalinense), and evergreen blackberry (Rubus laciniatus) to monitoring list, shade cloth mapping for new channel (Table 5.1-7), bi-monthly hydrologic monitoring using piezometers, wetland boundary delineation at years 5, 10, and 15, 100-year 24-hour design storm replacement channel standard, Wetland Indicator Status (WIS) monitoring, soil saturation standards, and TESC measures. Administrative Record numbers AR 018349–AR 018351, Exhibit 157.