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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. MEMORANDUM TO: Sarah Yoon FROM: Sophie Varga, Zoning Enforcement Officer DATE: 09/16/2021 RE: 135 W Francis – LPA 21-016 Please see the residential zoning checklist for a list of what should be shown on the zoning summary sheet, site plans, demolition calculations, floor area calculations, roof plans, and elevations. The checklist can be found here: https://www.cityofaspen.com/280/Documents-and-Permits. Examples of the sheets can also be found on this page. 1. Please update Attachment 3 to the Land Use Packet, Dimensional Requirements Form, to accurately represent the proposed varied setbacks. 2. Please provide a zoning summary sheet. Please provide a table showing the Net Lot Area calculation. 3. Site Plans – Plan Sheets: A.1.01, A.1.02 a. Existing: show roofline/roof eaves. b. Proposed: i. Show roofline/roof eaves ii. The outline of the addition is unclear. Please increase the weight of the lines showing the addition. iii. The topographic lines shown on the proposed site plan are those of the natural grade. The proposed topography should be shown on the proposed site plan. iv. Dimension any proposed projections into the setback. The land use application requests a variance for egress wells in the setback. Please be sure to dimension those. 4. Floor Area Calculations – Plan Sheets: A.1.05 - A.1.07. a. Existing: i. It appears that a sheet of existing FA Calculations is missing. Subgrade wall exposure and the table is missing. ii. Lower level: the entry way counts towards the deck allotment. The stairs to the basement also count towards deck. iii. Main level: show the exterior porches and decks. If it is exempt space, note why - the covered West entry steps are exempt per the front porch exemption, the back deck is exempt because it is within 6” of grade (I believe), etc. Please provide photos of the southern deck. iv. Upper level: 1. No method of entry is shown for the North or South sides of the space. How do you get up to these spaces? Please show the stairs and count any landings towards floor area. 2. Provide a dimensioned section specific to the floor area sheet showing what areas have thirty vertical inches or less between the finished floor level and the finished ceiling. b. Proposed: sheet A.1.07 is also provided as sheet A.1.03. I believe A.1.03 is an error; please only provide one of these sheets. i. Main Level: The stairs adjacent to the garage are not shaded. Please confirm they are counted towards floor area. ii. Upper Level: Provide a dimensioned section specific to the floor area sheet showing what areas have thirty vertical inches or less between the finished floor level and the finished ceiling. iii. Rooftop Deck Level: The top-most interior level of the vertical circulation (stairs) is exempt from floor area calculations. 5. Please provide a height over topography sheet. 6. Please provide demolition calculations. 7. Elevations – Plan Sheets: A.3.01- A.3.04 a. Please show natural and finished grade. b. Please see zoning checklist for other requirements. c. The garage door appears partially subgrade. d. If the pitch of the southern portion of the historic structure is 8:12 or greater the chimney may not extend above the highest ridge of the structure by more than required by adopted building codes or as otherwise approved by the Chief Building Official to accommodate safe venting (26.575.020.F(4)a) This memorandum summarizes major items. Zoning would request to review the updated plans prior to floor area benefits being granted. A variety of other requirements may be necessary for building permit submittal and zoning review.