Notes
Deliberative memorandum dated August 1, 2001, from Katie Walter to Ann Kenny, Washington State Department of Ecology, re Draft 401 Conditions for the Auburn Mitigation Site. Covers culvert placement issues in the revised grading plan (June 28, 2001) including northwest corner drainage swale culvert (approximately 60 feet long), south central mis-located culvert, and two additional culverts along the new drainage swale near the southwestern basin. Performance standards section addresses NRMP plant community boundaries, 15-year monitoring table 7.5-1, statistically valid vegetation sampling, US Army Corps of Engineers and Ecology notification of field work, as-built monitoring transect plans, hydrologic monitoring using piezometers and shallow hand dug soil pits in undisturbed wetlands and Borrow Site 3 near Wetland 29, bi-monthly hydrologic monitoring for first three wet seasons (November–May), 100-year 24-hour design storm replacement drainage channel standard, and Miller Creek mitigation area irrigation plan. AR 018272–018274, document identifier 21-1-12020-001.