2127 100TH ST SE 2024-06-14 - Laserfiche WebLink

5.4.2 Post-Restoration Functions and Values The proposed restoration plantings and removal of invasives and debris material will restore functions of disturbed portions of the wetland and buffer to a state equal or superior than pre- clearing. Over time, areas that were formerly cleared and graded will progress to a dense scrub- shrub and forested condition, recreating structurally diverse areas that will provide higher values for slowing surface flows,decreasing erosion potential,performing water quality improvement,and providing higher quality wildlife habitat. The restoration of trees and shrubs in areas that are currently bare will increase the opportunity for foraging, thermal cover, nesting, or hiding for wildlife that historically utilized the site. Overall, the proposed restoration measures are expected to lift the functions and values currently provided by the on-site wetland and buffer. 5.5 WETLAND AND BUFFER RESTORATION PLANTINGS Plant quantities and spacings have been adjusted to accommodate site conditions for areas of existing native vegetation remaining and/or emerging. The following planting plans are expected to restore the impacted wetland and buffer areas to equal or superior functions than pre- disturbance conditions. 5.5.1 WETLAND RESTORATION AREA A PLANTINGS (11,204 SQUARE FEET) Common Name Latin Name Size Spacing Quantity Western red cedar Thuja plicata 1 gallon 10, 25 Sitka spruce Picea sitchensis 1 gallon 10, 25 Red alder Alnus rubra 1 gallon 10, 25 Pacific willow Salix lasiandra 1 gallon 53 50 Sitka willow Salix sitchensis 1 gallon 53 50 Vine maple Acer circinatum 1 gallon 53 50 Salmonberry Rubus spectabilis 1 gallon 53 50 Twinberry Lonicera inaolucrate 1 gallon 5 50 Red-osier Dogwood Cornus sericea 1 gallon 53 50 5.5.2 BUFFER RESTORATION AREA B1 PLANTINGS (10,667 SQUARE FEET) Common Name Latin Name Size SjRacin Quantity Douglas fir Pseudotsuga menziesii 1 gallon 10, 18 Western hemlock Tsuga heterophylla 1 gallon 10, 18 Western red cedar Thuja plicata 1 gallon 10 18 Big-leaf maple Acer macrophyllum 1 gallon 10, 18 Nootka rose Rosa nutkana 1 gallon 53 40 Osoberry Oemleria cerasiformis 1 gallon 53 40 Snowberry Symphoricarpos albus 1 gallon 53 40 Thimbleberry Rubus para Porus 1 gallon 53 40 Salmonberry Rubus spectabilis 1 gallon 53 40 Salal Gaultheria Shallon 1 gallon 53 40 Sword fern Polystichum munitum 1 gallon 53 40 2127100th Street SE 12 WRI#23188 Critical Area Study and Mitigation Plan October 9, 2023