535 VIEW RIDGE DR 2025-03-31 - Laserfiche WebLink

From the Figures 1-2.4.1, 1-2.4.2 & 1-2.5.1 Min Requirements 1-9 are required and we utilized LIST#2 proposing that the: Lawn and landscaped areas: For the landscaped areas and front yard, compost amended soils are proposed per Post-Construction Soil Quality and Depth in accordance with BMP T5.13: Post-Construction Soil Quality & Depth Proposed Roofs: 1. A. Full Dispersion in accordance with BMP T5.30: Not Feasible due to not enough flow path and site too steep to make it work plus soils not good enough for full infiltration. B. Downspout Full Infiltration Systems in accordance with BMP T5.10A: Downspout Full Infiltration Not feasible due to Alderwood soils being too shallow and the steepness of the slope to the north. 2. Rain Gardens in accordance with BMP T5.14A: Rain Gardens, or Bioretention in accordance with BMP T7.30: Bioretention Cells, Swales, and Planter Boxes. Not feasible due to soils and slopes 3. Downspout Dispersion Systems in accordance with BMP T5.10B: Downspout Dispersion Systems (D5- 03.2). Not feasible due to slopes along the north end of project being too steep. 4. Perforated Stub-out Connections in accordance with BMP T5.10C Not proposed due to soils and steepness of site. Proposed is direct tie-in to storm System. Other Hard Surfaces: 1. Full Dispersion in accordance with BMP T5.30: Full Dispersion NA Driveway to sheet flow across 24" gravel dispersion berm to vegetated strip with compost amended soils, 2. Permeable pavement 1 in accordance with BMP T5.15: Permeable Pavements, or Rain Gardens in accordance with BMP T5.14A: Rain Gardens, or Bioretention in accordance with BMP T7.30: Bioretention Cells, Swales, and Planter Boxes. NA due to driveway upslope from house foundation.