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HomeMy WebLinkAboutSDP200800128 Review Comments 2008-09-11COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 Project: WPO -2008-00085; SDP -2008-00128; Sieg Maintenance Facility Plan preparer: Mr, Brajesh Tiwari, PE; McKee Carson Owner or rep.: Rectors and Visitors of the University of Virginia Date received: 12 August 2008 Date of Comment: 11 September 2008 Engineer: Phil Custer The final site, ESC, and SWM plan for the UVA Sieg Maintenance Facility Site has been reviewed. The following comments are provided. A. SDP -2008-00128 General Review Comments 1. Please show an access and parking easement over all spaces and drive aisles on the property. 2. The handicap ramps do not appear to meet the VDOT standard. (This may be a building official comment as well). The applicant may design the sidewalk at the pavement elevation around the handicap spaces as long as bumper blocks are provided and taper the curb back to the 6" height. 3. Please provide a date for the topographic infor►nation. 4. Please show the WPO buffer line. This should not affect the development at all. 5. What is the purpose of 30ft easement on the western boundary of the property? Is this the access easement that will be abandoned with the plat? 6. The parking calculations submitted in this site plan need to be approved by the Zoning Administrator. After taking part in a meeting with Charlie Hurt, I understand that a separate study will be submitted to the County. B. SDP -2008-00128 Final Site Plan Comments 1. VDOT approval of the site will be required. VDOT comments will be forwarded once they are received. 2. The applicant must provide a traffic generation and distribution summary for the site development. The traffic impact analysis was not submitted with this application and must be submitted prior to final approval. (PC condition #2) 3. All slopes steeper than 3:1 need a low -maintenance, non -grassed groundcover. [DM] 4. It appears that some of the wall elevations along the southern side of the property have typos. 5. All retaining walls 4ft or taller require a safety railing. [DM] 6. A detail showing the retaining wall used near the Northridge interconnection drive is required in this set. This detail should include any safety railing. [DM] 7. A drainage easement is needed along the pipe system on the Moser property carrying Sieg drainage. The width of the drainage easement must be computed using the equation listed in the design manual. The existing trees on the Moser Radiation site will be allowed to remain in the easement. This drainage easement must be recorded with a deed of easement before the site plan can be approved. 8. The existing entrance on the Moser radiation site must be called out as a VDOT Standard entrance. If this entrance does not meet the VDOT standard referenced, it must be upgraded with this application. 9. Please show adequate sight distance from the entrance onto Route 250. [DM] 10. Please provide a VL— L' designation for the curbing. [DM] r I 1. A dumpster and pad are needed for this use. The dumpster should be located in a convenient location away from any concentrated surface stor nwater runoff. [I 8-4.12.13e] 12. Please move the curbs on the drive aisle south of the Sieg maintenance building so that it is closer to the travelway lane so the loading spaces are protected by a curb and to prohibit unauthorized parking along the travelway. [I 8-4.12.15t] 13. The maximum grade for parking areas is 5% in any direction. [18-4.12.15c] 14. The maximum grade allowed on the travelway connecting the two adjacent parcels is 10%, measured from any direction. [18-4.12.17a, and PC Condition #4] 15. Engineering review maintains a policy of overland flow relief to prevent damage to buildings and structures in case of inlet/drainage system failure. Along the loading spaces and at the northwestern end of the building, water appears to be directed towards the building. 16. Please include in the sheet set the standard County notes for General Construction, verbatim. [DM] 17. Please provide a calculation for the curb cut provided on the Northridge site to the existing D1 -3B. Atter visiting the site, it appears that there is a low point in the curbline west of this inlet. Please correct with this plan. 18. Please provide a calculation for the trenchdrains above the rain garden showing that the total spread will be less than 1 Ott and that the depth is shallow enough not to spillover towards the travelway to the north. 19. Please accurately show all existing roofdrains and proposed measures for collecting roofdrains. All roofdrains (except 1 adjacent to the proposed loading area) appear to come down on the west and east sides of the building and are currently routed to the north. The roofdrain on the west side of the building should be extended to pick up all roof leaders. Please adjust the stormwater analysis based on these conditions. 20. The construction of the interparcel connection will require removing the existing dumpster and biohazard waste location. Please show where these facilities will be moved to on the Northridge site. C. WPO -2008-00085 Stormwater Management Plan Comments 1. A SWM facility maintenance agreement will need to be recorded before the site plan can be approved. Please submit this document with fee directly to Pam Shifflett after consulting the guidelines available on the county website. 2. The drainage divides for BMP maps do not appear to be accurate. Water that enters the low point between the building and the railroad tracks does not drain to the inlet on the Moser site. Please amend SWM analysis to reflect the true site drainage patterns (including roofdrains). 3. Please provide a routing using the ADS stage -discharge curve. On the plan please specify the product number of the grate the contractor needs to use. 4. Appropriate scour protection from the curb cuts and trench drains should be provided into the biofilter and rain garden. Landscaping should be removed from the scour protection area measures. 5. The biofilter must be planted with at least 3 species of trees and at least 3 species of shrubs. Please provide a separate planting schedule for the biotilter. 6. The rain garden will be considered a measure above and beyond the county's SWM requirements. Please clearly label this on the plan so future SWM inspectors will not require upkeep of the rain garden. 7. The underdrain in the biotilter must be in the gravel layer. 8. Please provide a modified simple removal rate spreadsheet for each drainage area/facility, not the entire site. 9. A SWM bond will be computed once the WPO plan is ready for approval. D. WPO -2008-00085 Erosion and Sediment Control Plan Comments 1. Adequate channel analyses are needed for each discharge point. The analysis should stop once the development is I% of the watershed as stated in Virginia ESC law. (The downstream network appears to need maintenance to clean out debris and riprap that has moved into the culvert.) 2. Please amend the EI_ —.totes in the plan set to match the notes in t_—narrative. 3. The limits of clearing and grading should include all construction activity and site disturbance. 4. The limits of clearing and grading should also include the earth disturbance for pavement removal in the southwest corner of the site. ESC measures should be provided for this work as well. 5. Move the ROW diversion onto the construction entrance showing that water is to drain to the trap. 6. The sediment trap 1 needs to be designed for the total drainage area without the use of the cleanwater diversion on the west end of the site. The county does not allow the use of diversion dikes to route clean water around traps and basins to reduce their size. An ESC bond will be computed once the WPO plan is ready for approval. FW: SDP -2008-00128 Sieg W-ntenance Facility Gerald Gatobu From: Denunzio, Joel D., P.E. [Joel.Denunzio@VDOT.virginia.gov] Sent: Thursday, October 30, 2008 2:53 PM To: Gerald Gatobu Subject: FW: SDP -2008-00128 Sieg Maintenance Facility Gerald, I have received and reviewed the latest plan for the above site and have no comments. Thanks, Joel Joel DeNunzio, P.E. Staff Engineer 434-293-0011 Ext. 120 joel._denunzio@_v_d_ot.virgini_a._gov From: Denunzio, Joel D., P.E. Sent: Friday, October 03, 2008 09:31 AM To: 'Gerald Gatobu' Subject: SDP -2008-00128 Sieg Maintenance Facility SDP -2008-00128 Sieg Maintenance Facility Gerald, We have reviewed the above plan and have no comments. Thanks, Joel Joel DeNunzio, P.E. Staff Engineer 434-293-0011 Ext. 120 joe1.denunzio@_v_dot._virginia.gov 11/24/2008 Page 1 of 1 Z- ■ � t7 t A r COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902-4596 Phone(434)296-5832 Fax(434)972-4126 Project: WPO -2008-00085: SDP -2008-00128: Sieg Maintenance Facility Plan preparer: Mr. Brajesh Tiwari. PE. McKee Carson Owner or rep.: Rectors and Visitors of the University of Virginia Date received: 12 August 2008 (Rev. 1) 03 October 2008 Date of Comment: 1 1 September 2008 (Rev. 1) 20 November 2008 Engineer: Phil Custer The final site. ESC, and SWM plans for the UVA Sieg Maintenance Facility Site have been reviewed. The following comments are provided. A. SDP -2008-00128 General Review Comments 5. What is the purpose of 3011 easement on the western boundary of the property? Is this the access easement that will be abandoned with the plat? (Rev. 1) Please remove this easement from the site plan if it is to be abandoned with the plat that has been submitted to the planner. B. SDP -2008-00128 Final Site Plan Comments 1. VDOT approval of the site will be required. VDOT comments will be forwarded once they are received. (Rev. 1) At the time of this letter, approval from VDOT has not been given. 12. Please move the curbs on the drive aisle south of the Sieg maintenance building so that it is closer to the travelway lane so the loading spaces are protected by a curb and to prohibit unauthorized parking along the travelway. [I 8-4.12.15t] (Rev. 1) Please extend the curbed island at the west end of the building towards the travelway. 13. The maximum grade for parking areas is 517c in any direction. [18-4.1?.15c] (Rev. 1) Comment has not been addressed. The slope in the southwest parking area is greater than 5%. Please also note that the grade adjacent to the loading space at the western end of the building cannot exceed 5% as well. Currently, there are grades exceeding 15% in this area. 14. The maximum grade allowed on the travelway connecting the two adjacent parcels is 10%. measured from any direction. [18-4.12.17a, and PC Condition #4] (Rev. 1) Comment has not been addressed. The slope of the travelway is steeper than 10% along the southern curb of the interconnector. Please also note that the grade adjacent to the loading space at the western end of the building cannot exceed 5%. Currently, there are grades exceeding 15% in this area. 16. Please include in the sheet set the standard County notes for General Construction. verbatim. [DM] (Rev. 1) Comment has not been addressed. The notes appear to be from an older version of the design manual. C. WPO -2008-00085 Stormwater Management Plan Comments 1. A SWM facility maintenance agreement will need to be recorded before the site plan can be approved. Please submit this document with fee directly to Pam Shifflett after consulting the guidelines available on the county website. (Rev. 1) Comment has not been addressed. 2. The draina-e divides for BMP maps do not appear to be accurate. Water that enters the low point between the building and the railroad tracks does not drain to the inlet on the Moser site. Please amend SWM analysis to reflect the true site drainage patterns (including roofdrains). (Rev. I) The drainage area to the rain garden is not correct. The drainage area line runs into tire property line. It appears the drainage area to the rain garden stops at the sidewalk along the landscape walls along Route 250. Please correct and amend the affected calculations. 3. Please provide a routing using the ADS stage -discharge curve. On the plan please specify the product number of the grate the contractor needs to use. (Rev. 1) Comment has not been addressed. Please specify the product number oil the plan so the contractor does not purchase a grate that will increase or decrease the hydraulic capacity of tire riser. 4. Appropriate scour protection from the curb cuts and trench drains should be provided into the biofilter and rain garden. Landscaping should be removed from the scour protection area measures. (Rev. l) Comment has not been addressed. The stone at the trenchdrains should be extended to the base of the rain gardens and the entire western slope of the biofilter should be lined with stone. Trees and shrubs should not be planted in the path of discharged water. The biofilter must be planted with at least 3 species of trees and at least 3 species of shrubs. Please provide a separate planting schedule for the biofilter. (Rev. 1) All landscaping that is to be counted in the biofilter must located in the bed (602 elevation). Since the bed area of the biofilter is 1,025sf, a minimum of 10 trees or shrubs must be provided in the bed area. The shrub to tree ratio within the biofilter must be between 2:1 or 3:1. Additional plantings outside of the biofilter bed will not be bonded with the biofilter and should not be included in the schedule. Please provide a modified simple removal rate spreadsheet for each drainage area/facility, not the entire site. (Rev. 1) A spreadsheet for the rain garden was not included in the submittal packet. A SWM bond will be computed once the WPO plan is ready for approval. (Rev. I) A SWM bond will be computed once the N'PO plan is ready for approval. D. WPO -2008-00085 Erosion and Sediment Control Plan Comments The sediment trap 1 needs to be designed for the total drainage area without the use of the cleanwater diversion on the west end of the site. The county does not allow the use of diversion dikes to route clean water- around traps and basins to reduce their size. (Rev. I) Sediment trap calculations were not submitted with the revised set. An ESC bond will be computed once the WPO plan is ready for approval. (Rev. I) An ESC bond will be computed once the WPO plan is ready for approval. COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 Project: WPO -2008-00085; SDP -2008-00128; Sieg Maintenance Facility Plan preparer: Mr. Brajesh Tiwari, PE; McKee Carson Owner or rep.: Rectors and Visitors of the University of Virginia Date received: 12 August 2008 (Rev. 1) 03 October 2008 (Rev. 2) 25 Novemeber 2008 Date of Comment: 11 September 2008 (Rev. 1) 20 November 2008 (Rev. 2) 5 December 2008 Engineer: Phil Custer The final site, ESC, and SWM plans for the UVA Sieg Maintenance Facility Site have been reviewed. Engineering review recommends approval to the final site plan. Engineering review approves the WPO plan. A. SDP -2008-00128 General Review Comments B. SDP -2008-00128 Final Site Plan Comments C. WPO-2008-00085 Stormwater Management Plan Comments 1. A SWM facility maintenance agreement will need to be recorded before the site plan can be approved. Please submit this document with fee directly to Pam Shifflett after consulting the guidelines available on the county website. (Rev. 1) Comment has not been addressed. (Rev. 2) Comment has not peen addressed. 9. A SWM bond will be computed once the WPO plan is ready for approval. (Rev. I) A SWM bond will be comparted once the WPO plan is readv f or approval. (Rev. 2) The SWMportion of the WPO bond has been computed to be $13,000. D. WPO -2008-00085 Erosion and Sediment Control Plan Comments 7. An ESC bond will be computed once the WPO plan is ready for approval. (Rev. 1) An ESC bond will be comparted once the WPO plan is ready,for approval. (Rev. 2) The ESC portion of the WPO bond has been computed to be $19,000.