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HomeMy WebLinkAboutSDP200800084 Review Comments 2008-06-11of ar,a, o IRGIN County of Albemarle Department of Community Development Memorandum To:Michael Myers (mmyers @enggroupe.com) From:Megan Yaniglos- Senior Planner Division:Zoning & Current Development Date:June 11, 2008 Subject:SDP -2008 -084- Dunlora Gates- Final Site Plan The Planner for the Zoning & Current Development Division of the Albemarle County Department Community Development will recommend approve the plan referred to above when the following items have been satisfactorily addressed. (The following comments are those that have been identified at this time. Additional comments or conditions may be added or eliminated based on further review.) [Each comment is preceded by the applicable reference to the Albemarle County Code.] 1. Provide a deed of easement for the temporary grading easement for review and approval from County Attorney. 2. [32.7.9.4(c)(1)] Provide the general type of the wooded area to be saved (evergreen or deciduous). Please contact Megan Yaniglos at the Department of Community Development 296 -5832 ext. 3004 for further information. koW f COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road Charlottesville, Virginia 22902 -4596 Phone (434) 296 -5832 Project: Plan preparer: Owner or rep.: Plan received date: Date of comments: Reviewer: Fax WPO -2008- 00057, Dunlora Gates E &SC, SWM and Road Plans SDP -2008- 00084, Dunlora Gates Site Plan Mr. Mike Myers PE, The Engineering Groupe fax: 703.670.7769 Mr. Jim Gates 21 May 2008 7 July 2008 Phil Custer fax: 434.263.4691 972 -4126 A. General Review Comments 1. Please include the following on the plan: source of topography, date of topography, and a benchmark. 2. Please provide confirmation of the grading easement on the open space adjacent to lot 394. A letter or an email from the property owner will do. 3. Before this plan can be approved, drainage easements will need to be recorded from drainage systems 10 -11 -12 and 9- existing. Stonn structure 6 should be moved off of the property line; otherwise, an easement will be needed in this area as well. 4. On the cover sheet, please update all standard county notes for general construction and general construction for streets. These notes are available in the latest edition of the design standards manual which can be found online. B. Site Plan Comments (SDP - 2008 - 00084) 1. A drainage easement is required on the outfall of the biofilter to the stream. 2. A drainage easement is required on storm sewer system 6B -6A -6 and the upstream channel. The width of this easement should be computed using the equation found in the design manual. 3. Please callout a non - grassy, low maintenance groundcover in all areas where grades are steeper than 3:1. [DM] 4. Please show the driveway on lot 394. The new sidewalk in this area does not appear to be long enough. 5. The sidewalk on lot 16 should be angled towards the sidewalk crossing across the street between lots 2 and 3. This crossing should also be angled towards the sidewalk on lot 16. 6. There should be a turn in the sidewalk on lot 384 directing pedestrians across the street 7. Inlet shaping (IS -1) is required on all inlets with a drop of water flow of 4ft or greater. This fall requirement includes drops from the grate of an inlet as well. 8. The minimum deflection angle in a stonn sewer system is 90 degrees. Please amend the configuration on storm line 6B -6A -6 so that the deflection angle is greater than 90 degrees. 9. The drop connection shown in stonn structure 3 is not allowed. Engineering review policy is to have all grade and angle changes occurring in manholes. 10. The easement along the storm system 213-3 -4 should be widened based on the equation in the design manual. C. Road Plan Comments (WPO -2008- 00057) 1. VDOT approval is required. VDOT approval has not yet been received at the time of this letter. Albemarlt,- county Community Development Engineering Review Comments Page 2 of 2 2. A crossdrain (CD -1) appears to be needed at Sta. 13 +40. [DM] 3. In addition to the proposed grade elevation, please include the existing grade elevation at each 50ft station in the profiles. [DM] 4. Please provide speed limit signs on the plan. [DM] 5. All driveways should be designed to conform to VDOT standard PE -1. 6. The following comments are typically reviewed by VDOT and, if approved by VDOT, do not need to be amended to obtain county approval. a. Some of the K- values appear to be steeper than the minimum value based upon the design speed. b. For rural road intersections, engineering review maintains a policy that the intersecting cross street continue the 2°/, cross of the intersected primary street for at least 20ft. 7. A new road bond will be calculated with this application. To request a road bond, the applicant must complete a Subdivision Road Bond Estimate Request and a Schedule of Completion for Bonded Improvements. D. Erosion and Sediment Control Plan Comments (WPO -2008- 00057) 1. The diversion at the southern end of the property should be extended to the SW corner and pulled up the western boundary to the construction entrance. This would satisfy engineering review's requirement of construction entrances draining to trapping measures. The silt fence in the SW corner would need to stay in place. 2. In phase If of the ESC plan, the back halves of lots 10 -15 do not appear to be adequately protected. A trap or a diversion directing water to sediment basin 1 may be required. 3. The installation of the sanitary sewer line south of lot 395 will require ESC measures. 4. Please provide a staging and parking area on the plan. [DM] 5. Please provide a soil stockpile area. [DM] 6. In the narrative under "Critical Erosion Areas," please note that all areas steeper than 3 :1 will require low maintenanced, non - grassed gnoundcover. [DM] 7. The following comments are regarding the sediment basin calculations. a. Barrel from sediment basin is mislabeled as 48" RCP in the detail. b. Please provide stage - volume tables and volume calculations for the sediment basin. c. An emergency spillway does not appear to be provided in plan view. Please provide a note calling out the 8ft wide spillway on both sheets 9, 10, and 14. d. Please submit dewatering orifice calculations. My calculations showed the orifice needed to be 3" (rounded down from 3.8 "). 8. The ESC portion of the WPO bond will be computed once all comments have been addressed. E. Stormwater Nlanagement Plan Comments (WPO -2008- 00057) 1. The maintenance agreement submitted with the original WPO was recorded with the property and another agu is not necessary. If a fee was submitted with this latest agreement submittal, please let me know and I will refer you to correct person to obtain a refund. 2. Please show emergency spillway on sheet 14. 3. The gravel layer in a biofilter must be 1.5ft. [DM] 4. Please provide a planting schedule for the biofilter meeting the planting quanity requirements of the VSMH. Please also be sure to specify at least 3 species of trees and 3 species of shrub. 5. The SWM portion of the WPO bond will be computed once all comments have been addressed. Affiemade Service Auth4rity rving Conserving October 14, 2008 The Engineering Groupe Attn: Mr. Michael Myers, P.E. 2148 Berkmar Drive Charlottesville, Virginia 22901 Re: Dunlora Gates Dear Mr. Myers: The plan, entitled "Final Site Plan for Dunlora Gates" dated May 7, 2008, last revised October 3, 2008, is hereby approved for construction. One set of the approved plan is enclosed for your records. Any previously approved plans are voided with this approval. This approval is for basic compliance with the General Water & Sewer Construction Specifications of the Albemarle County Service Authority (ACSA) and does not relieve the contractor from responsibility for his work as it relates to the plan and specifications. The ACSA requires that a copy of the approved construction plan be on the job site. The contractor is responsible for marking up a copy of the approved construction plan showing as -built information and provide this data to your client at the completion of utility installation. The final as -built plan shall be submitted in a format of one paper copy and one mylar copy. A preconstruction conference shall be scheduled with the project manager to ensure coordination and answer any questions. This will be a short meeting to review the project, materials, test methods and schedule, in order to expedite construction. Please have the proper party call me at 977 -4511 to schedule the meeting. This approval is valid for a period of 18 months from this date. If construction is not in progress at the end of this time period, the approval shall be void. The pressure for water may exceed 80 psi at some meter locations 050601 Dunlora Gates Owner Approval Ltr 101308 168 Spotnap Road • Charlottesville, VA 22911 • Tel (434) 977-4511 • Fax (434) 979 -0698 vrvw.serviceauthority.org If you have any questions or if we can be of assistance, please give us a call at 434) 977 -4511. Sincerely, Jeremy M. Lynn,`P.E. Senior Civil Engineer JML /dbh cc: Mr. Jim Gates State Health Department Current Development, Bill Fritz Bldg Codes & Zoning Services Soil Erosion Inspector t Iro 050601 Dunlora Gates Approval Ltr 101308 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- 00057, Dunlora Gates E &SC, SWM and Road Plans SDP -2008- 00084, Dunlora Gates Site Plan Plan preparer:Mr. Mike Myers PE, The Engineering Groupe fax: 703.670.7769 Owner or rep.:Mr. Jim Gates fax: 434.263.4691 Plan received date:21 May 2008 Rev:14 October 2008 Date of comments:7 July 2008 Rev:21 October 2008 Reviewer:Phil Custer Rev:John P. Diez The revised E &SC, SWM, and Road plans for Dunlora gates, received on October 14th, have been reviewed. Engineering recommends approval based on the conditions left in the comments. Please submit 10 copies of plans with the latest revised sets. A. General Review Comments B. Site Plan Comments (SDP -2008- 00084) Albemarle City Community Development Engineering Review Comments Page 2 of 4 C. Road Plan Comments (WPO -2008- 00057) 1. VDOT approval is required. VDOT approval has not yet been received at the time of this letter. 6. The following comments are typically reviewed by VDOT and, if approved by VDOT, do not need to be amended to obtain county approval. a. Some of the K- values appear to be steeper than the minimum value based upon the design speed. b. For rural road intersections, engineering review maintains a policy that the intersecting cross street continue the 2% cross of the intersected primary street for at least 20ft. 7. A new road bond will be calculated with this application. To request a road bond, the applicant must complete a Subdivision Road Bond Estimate Request and a Schedule of Completion for Bonded Improvements. Albemarle C,nty Community Development Engineering Review Comments Page 3 of 4 D. Erosion and Sediment Control Plan Comments (WPO -2008- 00057) 7. The following comments are regarding the sediment basin calculations. d. Please submit dewatering orifice calculations. My calculations showed the orifice needed to be 3" (rounded down from 3.8 "). Rev. 1) Comment has not been addressed. The 3" is labeled in the calculations. However, it still says S" under the Basin Volume Design ( #9) The ESC portion of the WPO bond will be computed once all continents have been addressed. E. Stormwater Management Plan Comments (WPO -2008- 00057) 1. The maintenance agreement submitted with the original WPO was recorded with the property and another agreement is not necessary. If a fee was submitted with this latest agreement submittal, please let me know and 1 will refer you to correct person to obtain a refund. 5. The SWM portion of the WPO bond will be computed once all comments have been addressed. Albemarle C,nty Community Development Engineering Review Comments Page 4 of 4 The E &SC bond amount is $31,900. The SWM bond amount is $29,500. Please contact Pam Shifflett (Albemarle County Department of Community Development) at ext. 3246 for bondingprocedures. Once the E &SC bond and the SWM bond have been posted, you may contact the Department of Community Development to arrange a pre - construction meeting. In addition, should the County Inspector find the limits of disturbance increased or the need for additional control measures required to protect the site, additional fees will be required. Please contact Megan Yaniglos of Current Development Planning at ext. 3004 regarding approvaloftheFinalSitePlan.