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HomeMy WebLinkAboutFile Documents.1265 Mountain View Dr.0031-2021-BCHO (5)Markup Summary Page: 4 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Read drainage report requirements in Appendix A of URMP. 4 (1) Page: 5 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Detention requirements are for 100year storm. 5 (3) Page: 5 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Show how all affected impervious area is directed to the bioretention area. Page: 5 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf No snowmelt is allowed to drain to the street. Snowmelt must be captured and detained on site. Page: 8 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Survey must be provided and stamped by a certified surveyor. 8 (1) Lot 7, West Meadows July 1.0 Introduction 1.1 Project Background and Location The proposed project is located at 1265 Mountain View Dr in this City of Aspen, Pitkin County Colorado. Currently there is an existing Single-Family Residence, driveway and landscaping. Read drainage report requirements in Appendix A of URMP. age from the developed area was designed to be released at a rate flows. Runoff from the developed areas, which includes the xe ay, and parking area, are conveyed via a series of drainage swa o onsite landscaped areas for bio retention of WQCV. mary of the drainage basin and peak runoff for the 5-year and 1 mmarized in the appendix of this report Detention requirements are for 100year storm. his parcel with respect to offsite runoff. These areas have not been report due their unchanged status. loped area was designed to be released at a rate consistent with from the developed areas, which includes the xeriscape gravel areas, g area, are conveyed via a series of drainage swales and downspout caped areas for bio retention of WQCV . ainage basin and peak runoff for the 5-year and 100-year design storms e appendix of this report Show how all affected impervious area is directed to the bioretention area. July 2021 t 7 consists of a single-family home consisting of one overall drainage patterns as part of the original design are e patterns and represent the existing conditions. etery area to the south are not proposed to change, and do with respect to offsite runoff. These areas have not been e their unchanged status. No snowmelt is allowed to drain to the street. Snowmelt must be captured and detained on site. Survey must be provided and stamped by a certified surveyor. Report section names have been updated to URMP Appendix A. There are several areas That do not pertain to this project due to only minimal disturbance and minimal improvements being made to the existing site. Report updated to reflect 100 year detention. bio retention volumes have been provided that exceed the required storage volume of the 100 year storm. The driveway area is graded / sloped to the North and east and will sheet flow to a bio retention area. The walk to the main entrance is to be installed that the sheet flow is directed to the inner planting / bio retention area. Additionally roof gutter downspouts have been direct to the retention areas to provide for additional capture volume. retention area has been added to the end of the drive. see response above for grading and sloping to flow areas to retention. Survey added, now provided with report. 08/31/2021 Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Show how driveway is routed to retention areas. 9 (6) Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Stamped Civil plans required. Read requirements on Civil plan submittals in URMP. Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Provide plans to show how retention is accommodated. Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf No snowmelt is allowed to be discharged to the street. Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf Show in Civil plans how this retention is accomplished. Show how driveway is routed to retention areas. Stamped Civil plans required. Read requirements on Civil plan submittals in URMP. Provide plans to show how retention is accommodated. No snowmelt is allowed to be discharged to the street. Show in Civil plans how this retention is accomplished. Drive will be installed to slope at a minimum of 0.5% to the North and east to discharge into the bio retention area Plans and report are stamped. bio retention cross section is on pg PRDR1 Proposed volume is also shown on page Drive will be installed to slope at a minimum of 0.5% to the North and east to discharge into the bio retention area that has been added. Bio retention cross section is on pg PRDR1. Size and volume of retention area is shown on PRDR1. Putting green area removed from scope. 08/31/2021 Page: 9 Author: jackd Capture: No File Name: 40.Final Drainage Report.20210802.pdf All affected impervious area drainage must be captured. Show on civil plans how this is routed to detention. All affected impervious area drainage must be captured. Show on civil plans how this is routed to detention. The driveway area is graded / sloped to the North and east and will sheet flow to a bio retention area. The walk to the main entrance is to be installed that the sheet flow is directed to the inner planting / bio retention area. Additionally roof gutter downspouts have been direct to the retention areas to provide for additional capture volume. 08/31/2021