1600 121ST ST SE 2016-01-01 MF Import

native plants. Phase II - The new wetland would be excavated to the height of the top of bank of Silver Lake Creek channel. Annual ryegrass would be planted at 15 Ibs./acre and willow cuttings would be planted at 2 foot spacing. A garage and shed would be removed from the wetland buNer area. The disturbed area and a 37-1/2 foot buffer would be planted with native trees and shrubs in a random triangular spacing pattem. The 25 foot buffer for the outfluw fmm Silver Lake will have an enhanced buffer of 25 feet, with proposed species listed in the mitigation plan dated June 25, 1992. Additional Wetland Mitiaation Reauirements Development of the site must be in confortnance with the proposeo mitigation plans and the following modifications and additional conditions: A. Phase I : 1. A 35 foot buffer is wetland on the site. the 35 foot buHer. 3. il required around the entire perimeter of the central A 10-toot building setback must be provided outside A wetland at the southeast portion of the site would remain undisturbed. A 50 foot buffer is required adjacent to the wetland and a 10 foot building setback must be provided outside the 50 foot buffer. The surtace blanket of organic soils placed in the new wetland areas must be a minimum of 8 inches deep. The buHer enhancement adjacent to wetland #1 and wetland #2 and proposed wetland plantings must include the following species substitutions: a. � c. � e Rather than holly, the following species shall be planted: nootka rose (Rosa nutkana), hazelnut, ninebark and vine ma�le. These should be planted in equal numbers to total 180. Mock orange (Philadelphus lewisii) may not be used, since it is generally found in dry clearings of Douglas fir forests. Physocarpus capitatus (ninebark), or another species approved by the Planning Department, shall be used instead. Rather than hardhack, an equal number oi hardhack and redstem dogwood shall be provided; and Rather than soft rush the plantings must inGude bullrush (Scirpus microcarpus), slough sedge (Carex obnupta), spike rush (Eleocharis spp.), and/or sawbeak sedge (Carex stipata). Populus tricncarpa (Black cottonwood) shouid be planted along the southem and eastem wetland area. There are a number of seedlings and saplings already coming up in the southem area, a number ot which could be used for transplantinp to other portions of the wetland and stream cortidor. In addition, cutting from the existing Salix sp. should be used to vegetate the open areas within the eastem wetland cortidor. To minimize erosion in Geared areas, either appropriato native