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HomeMy WebLinkAboutSDP200800052 Review Comments Preliminary Site Plan 2008-04-15 (3)*-&A County of Albemarle Department of Community Development Memorandum To: Gerald Gatobu, Current Development Project Planner From: Phil Custer, Current Development engineering review Date: 15 April 2008 Subject: UVA Long Term Acute Care Hospital Preliminary Site plan (SDP -2008- 00053) The preliminary site plan for the UVA Long Term Acute Care Hospital property has been reviewed. The engineering review for current development can recommend approval to the plan after the following changes have been made. 1. Please provide an amendment to the traffic impact and parking study to include the additional parking being proposed for the Sieg Maintenance site. 2. Please provide interconnection between the three parcels involved in this plan so that Route 250 will not be used as the interconnecting travelway. [32.7.2.5] 3. Please provide a Modified simple spreadsheet for each SWM drainage area on site. Please note that as policy, engineering review does not allow the water quality treatment of one drainage area to "overtreat" for other areas of the site. The runoff from each watershed leaving the site must be treated to the required removal rate. For instance, the biofilter will have a separate removal rate computation and it is likely that the resulting removal rate would be closer to 65% than 50% as shown on the plan. 4. The use of the parking spaces of the Kirtley Warehouse as mentioned in the parking study will require waivers of County Code 4.12.15.c and 4.12.17.a from the Zoning Administrator. The access drive to the warehouse is approximately a 15% grade. This is steeper than the ordinance requirement of a maximum 10% grade for travelways and maximum 5% grade for parking areas. Engineering review will not support either of these waivers. 5. Please move the entrance from the rear of the hospital farther north. Engineering believes the entrance is too close to the intersection of the access easement and Route 250. 6. Please show all of the grading necessary for the creation of the biofilter facility. This will be helpful in writing the critical slope wavier report. 7. A critical slope waiver report will be written separate from this comment letter. The following comments are not required for preliminary site plan approval but will need to be addressed during the final site plan process. 1. The width of the curb cannot be included in the width of the sidewalk. Sidewalks adjacent to parking spaces must be 6ft in width or bumper blocks must be provided. 2. It appears from the grading of the accessway on the southwest side of the building that the filterra boxes will need to be relocated so they are designed to capture as much water as possible while still having a bypass inlet available. 3. It appears an inlet is needed in the ambulance drop -off area. File: El_psp_PBC_sdp200800053 Current Development Engineering Review Comments Page 2 of 3 vrRC1N1� County of Albemarle Department of Community Development Memorandum To: Gerald Gatobu, Current Development Project Planner From: Phil Custer, Current Development engineering review Date: 15 April 2008 Subject: Sieg Maintenance Preliminary Site Plan (SDP- 2008 - 00052) The preliminary site plan for the Sieg Maintenance property has been reviewed. The engineering review for current development can recommend approval to the plan after the following changes have been made. 1. Please show curb and gutter on the plan where it has not been waived. A waiver of the curb and gutter standard will not be given for this project except at those locations to the east end of the site where curb cuts allow water to pass into the biofilter and swale. Engineering review feels that allowing water to travel through landscaped parking islands would create stabilization issues and long term erosion problems. From each of these curb cuts where the waiver has been granted, there should be a grassed channel that is kept free of landscaping or other groundcover. 2. It appears there are several issues with the number of lot lines and parcels for this single building. Each separate TMP parcel needs the appropriate amount of spaces based on the building square footage within it. Boundary line adjustments for these properties seem unavoidable. It appears combining TMP's 59 -23D, 59 -23F, 59 -23C1, and the Folly Drive easement into one parcel would simplify this application. 3. Please update the parking and traffic study for the LTACH development to include the amendment to the Sieg Maintenance parking lot and vehicle demand loads. 4. Please provide vehicular interparcel connection to TMP 59 -23B. [32.7.2.5] 5. Please show all critical slopes on the plan even though they may not exist on the parcel. 6. Please show adequate sight distance onto Route 250 on the plan. 7. Please provide pedestrian access to LTACH through the Northridge site. A minor amendment for the Northridge site should be processed at this time for the improvements shown to TMP 59 -23B in the LTACH and Sieg Maintenance preliminary site plan applications. [32.7.2.8] 8. The area allotted for SWM appears to be large enough for water quality treatment and detention. The final review of the SWM computations will be performed during the WPO submittal. The following comments are not required for preliminary site plan approval but will need to be addressed during the final site plan process. 1. The width of the curb cannot be included in the width of the sidewalk. The sidewalk on the southern edge of the building measures to be 4.5'. 2. Sidewalks adjacent to parking spaces must either be 6ft in width or 5ft in width with bumper blocks in the parking spaces. Sidewalk widths are measured exclusive of curb. Current Development Engineering Review Comments Page 3 of 3 3. Parking spaces may have a depth of 16ft, if a 2ft overhang is available, but the 16ft distance must be measured from the end of the space (the travelway) to the face of the curb (or as shown in this instance, a bumper block). 4. There is not an available 2ft overhang for the parking spaces at the western end of the lot due to the row of bushes. 5. The addition of the northeastern parking lot displaces many utility items that appear to be necessary for the building. Where are these items to be relocated? If some of the items are to remain, the sidewalk must be widened to accommodate. 6. The maximum grade in the parking lot is 5%. This includes areas where there is parallel parking. 7. It appears that a dumpster pad may be needed by the building occupants. Pilc: E1-psp_PBC_sdp200800052