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HomeMy WebLinkAboutExhibitB_ReferralComments Exhibit B - Referral Comments HP Project: 135 W. Francis Street Parks Department Comments: Dave Radeck, david.radeck@cityofaspen.com 1. Move water quality vault to the south to keep excavation away from the cottonwood. 2. Keep all stormwater piping out of driplines of trees, especially the cottonwoods in the NW corner. 3. Move window well in the SE corner to the south side of the house and use a one sided pour for remaining window well. 4. Air-spading is required in driplines of all trees for curb and gutter and any other driplines that are impacted by activity. 5. Inspection of exposed roots by City Forester will be required before any root cutting can occur. 6. Fence post locations within the driplines of trees will need to be approved by the City Forester. 7. Irrigation of all grass and trees will be required throughout the project. 8. Remove Item 3 in Notes on Page C2. 9. Plan on enclosing most of the front and side yard with a 6' tree protection fence. 10. Carefully remove existing storm inlet and piping within the dripline of cottonwood. 11. Submit for a tree removal permit. Building Department Comments: Bonnie Muhigirwa, bonnie.muhigirwa@cityofaspen.com 1. Fire sprinklers will be required because the fire area exceeds 5,000 sq ft. With fire sprinklers, the exterior walls and projections will not need to fire- rated because they are more than three feet from the property line. 2. Snow stops will be required at all roof pitches that shed onto walking and driving paths and into emergency escape and rescue opening window wells (Ordinance 40, 2016). 3. The edge of the spa appears to be within 18” of the edge of the roof deck. This will require the guard around the spa to be extended an additional 18” (https://www.cityofaspen.com/DocumentCenter/View/6202/Hot-Tub-and- Spa-Safety-Railings) Engineering Department Comments: Hailey Guglielmo, hailey.guglielmo@cityofaspen.com 1. Applicant will be required to follow the requirements of a major development within the Urban Runoff Management Plan. The conceptual HPC plan shows the installation of a water quality vault to account for stormwater requirements. The plans show an infiltration vault to accommodate the WQCV within 10’ of two property lines. Infiltration vaults must follow the same guidelines as drywells. Drywells must be 10' from property corners. If there are no alternatives a variance is required to allow an infiltration vault within 10' of the property lines. The variance shall address proper separation from the hydrant so as not to cause freezing issues. 2. The plans show a transformer across the alley. Does this transformer serve the property and does the existing transformer have capacity for the increased use? Will this property require a new transformer? Work with the City Electric Department to determine available capacity. A Load Calc Form will be required at time of building permit. 3. The conceptual plans show a new water service line. At building permit also show abandonment of the existing line. Verify if the structure will have a fire suppression system and call out water service line size. If a 2” is requested provide a memo from the fire suppression company stating a smaller line size will not provide adequate flows. 4. Excavation for the proposed water quality vault must be examined with the Engineering and Parks Departments. No excavation will be allowed within the ROW or the tree drip lines of the large trees in the vicinity. 5. Application calls out the historic building to be relocated for excavation. What is the proposed system for stabilization? At building permit, provide excavation and stabilization plans. Include information on how the structure will be supported.