![]() ![]() The University of Washington has long-term plans to redevelop its parking lots along Montlake Boulevard into additional office and classroom space, forming the new "East Campus" area. The University of Washington moved from its downtown campus to the north side of Portage Bay in 1895, later expanding during the Alaska–Yukon–Pacific Exposition of 1909 that was hosted at the site. In 1911, urban planner Virgil Bogue's rejected comprehensive plan for Seattle envisioned a citywide subway system, including a line serving the east side of the university campus and connected to Ravenna and eastern Capitol Hill. The Forward Thrust Committee's planned regional rapid transit system, which was rejected by voters in 19, included a subway station at the University Hospital near Husky Stadium, from where trains would continue south through Capitol Hill to Downtown Seattle. ![]() A 1986 regional transit plan from the Puget Sound Council of Governments proposed a light rail line through the University District, including a station at the University Hospital, continuing through Eastlake to Downtown Seattle. In the 1990s, a regional transit authority-later Sound Transit-was formed to build a light rail system for the Seattle metropolitan area. The University District was named as a major destination for the system and given two stations at NE Pacific Street and NE 45th Street on the western side of the university campus, which would be connected to Downtown Seattle via a tunnel under Capitol Hill. The $6.7 billion proposal, including a light rail line continuing north from the University District to Northgate and Lynnwood, was rejected by voters in 1995 and replaced with a smaller plan. In November 1996, voters approved a condensed $3.9-billion regional transit plan that included a shorter light rail line from the University District to Downtown Seattle and SeaTac. A surface alignment through Eastlake was also proposed in the event boring a tunnel through Capitol Hill and under Portage Bay would be too expensive. We recommend a planting soil or filter media depth of 300 mm to support grasses, 600 mm for shrubs and perennials, and 1000 mm for trees.Sound Transit finalized its preferred alignment for the light rail project, which included stations at NE Pacific Street and NE 45th Street, in 1999. ![]() Specify that 4 litre samples of topsoil, from each source to be drawn upon, be provided to the consultant for visual inspection, along with topsoil quality test results from an accredited soil testing laboratory, or a quality assurance certificate from the supplier. Must have a cationic exchange capacity greater than 10 milliequivalents per 100 grams (meq/100 g).Must have a sodium absorption ratio less than 15.For use in producing bioretention filter media Blend B (water quality treatment priority), the topsoil must contain at least 9%, and not greater than 36% clay-sized particles and at least 2% organic matter by dry weight. ![]() For use as planting soil for a vegetated stormwater practice, the topsoil must contain a minimum of 5% organic matter by dry weight or be amended so, through addition of an organic soil conditioner.Should have a Loamy Sand, Sandy Loam, Sandy Clay Loam, Loam or Silty Loam soil texture.Should not have been passed through sieves or screens smaller than 50 mm (2”) to avoid eliminating peds.Must be free from toxic material and roots, stones or debris over 50 mm (2") in diameter.Must be friable and capable of sustaining vigorous plant growth.The factors to consider in determining if a topsoil is suitable for use as planting soil for a vegetated stormwater practice, or use in producing a bioretention filter media mixture include the following: Soil laboratory reports shall certify the material to be suitable for re-use on residential, parkland, institutional, industrial, commercial, or community landscapes for the germination of seeds and the support of vegetative growth.Topsoil shall be in compliance with Ontario Regulation 153/04 Record of Site Condition standards for soil quality or as amended through Ontario Management of Excess Soil - A Guide for Best Management Practices.Topsoil may be material that was stripped from the project site and stored in stockpiles for re-use, or material imported to the site from a supplier provided the physical and chemical characteristics are within acceptable ranges. ![]()
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