917 112TH ST SE Geotech Report 2022-10-25

Habitat for Humanity of Snohomish County ES-5168 April 26, 2017 Page 10 E P W I a P e as Lawns and Landscaped Areas T5.13: Post-construction soil quality and depth Yes No site limitations. (Volume V, Chapter 5) Roofs T5.30: Full dispersion (Volume V, Chapter 5) No The proposed project will not preserve at least 65 percent of the site. The unweathered glacial till soil (hardpan) observed at relatively T5.10A: Downspout full infiltration systems shallow depths exhibits very poor soil (Volume III, Chapter 3) No infiltration characteristics. Additionally, native soils generally classify as sandy loam. The unweathered glacial till soil T7.30: Bioretention (Volume V, Chapter 7) (hardpan) observed at relatively T5.14A: Rain Gardens (Volume V, Chapter 5) No shallow depths exhibits very poor soil infiltration characteristics. T5.10B: Downspout dispersion systems Proper setbacks and vegetated flow (Volume III, Chapter 3) No paths are not available. T5.10C: Perforated stub-out connections Unweathered glacial till soil (hardpan) (Volume III, Chapter 3) No will interfere with the trench bottom. Other Hard Surfaces T5.30: Full dispersion (Volume V, Chapter 5) No The proposed project will not preserve at least 65 percent of the site. Unweathered glacial till soil (hardpan) —' T5.15: Permeable pavement (Volume V, will interfere with the pavement base Chapter 5) No which compromise adjacent impervious pavements and structures. The unweathered glacial till soil T7.30: Bioretention (Volume V, Chapter 7) (hardpan) observed at relatively T5.14A: Rain Gardens (Volume V, Chapter 5) No shallow depths exhibits very poor soil infiltration characteristics. T5.12: Sheet flow dispersion Proper setbacks and vegetated flow T5.11: Concentrated flow dispersion (Volume No paths are not available. V, Chapter 5) Earth Solutions NW, LLC