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HomeMy WebLinkAboutSUB202100161 Correspondence 2022-03-18 (2)® ROUDABUSH, GALE & ASSOCIATES, INC.1 March 151h, 2022 Mr. Adam Moore Virginia Department of Transportation Charlottesville Residency 701 VDOT Way Charlottesville, VA 22911 Project Title: Dunlora Farm — Phase 1 Road & DFainage Utility Plan Dear Adam, Please find attached the revised plans. The plans have been updated to address the comments received from VDOT dated October 21", 2021. 1. Please remove trees within 30' of intersections per B(1)-44 RDM. • Response: Comment noted. Trees have been relocated to be no less than 30' from the intersection per B(1)-44 RDM. 2. Landscaping plants and trees adjacent to the sight distance triangle will needto be maintained in area between 2 and 7 feet above ground as a clear zone to preserve sight lines and accommodate pedestrians. The HOA will be responsible for the maintenance of sight lines. • Response: Comment noted. VDOT Notes on Sheet 15 have been updated to include verbiage indicating that the HOA will be responsible for the maintenance of sight lines. 3. There are multiple pipe flow velocities that exceed 10 fps. The drainage manual states that pipe velocities in excess of 10 fps are to be avoided. It'srecommended that velocities be adjusted accordingly. Response: Comment noted. Please note that in the previous submittal, Sheet 12 indicates that no pipes exceeded a velocity of 10 fps. However, Storm sewer design and calculations have been updated/revised to accommodate additional demands for the site. As a result, there are a few instances where pipe velocities fall above 10 fps in order to minimize the need for drop manholes in those areas. 4. For step down manholes located in the VDOT right of way that require manhole bottom protection (e.g., additional concrete, steel plate, etc.), bottom protection designs shall be submitted for VDOT approval prior to fabrication. Response: Comment noted. No step down manholes are required for our Storm Sewer design within the VDOT right of way. 5. CG-12 design appears to be from the commercial entrance detail (Heavy Truck Traffic Anticipated) or the method of installation on radius pages of the Road & Bridge Standards. Please utilize Type A (with Buffer) or Type C(perpendicular) application. • Response: Comment noted. All entrances have been updated, and type(s) have been indicated on sheet 5. 6. Temporary turn -around or cul-de-sacs are required per Road Design Manual Appendix B, page B(1)-25. See details for minimum lengths. • Response: Comment noted. A temporary branch type turnaround has been added on Fowler Street per Appendix B, page B(1)-25. 7. Please verify inlet #106 is placed in the lowest point of the sag so no ponding will occur. • Response: Inlet #106 structure location has been adjusted, moving to the lowest point of the sag. Concurrently, water laterals and street trees have been revised accordingly. 8. Storm MH #144 should be moved out of the roadway prism. • Response: The storm layout and numbering has changed and no structures are located in the roadway prism. 9. San. Sew. MH #4 appears to be in the curb/gutter and should be moved outof the roadway prism. • Response: MH#4 has been shifted outside of the roadway 10. Every effort should be made to minimize manhole installations at street intersections and in the normal wheel path of the travel lanes. • Response: Comment noted. Manholes have been moved from the wheel path of travel lanes. 11. Please show and label the cross drains in plan and profile and where they will be attached or day lighted to drain. Please see UD's and CD's in the Road & Bridge Standards, Section 108. • Response: Comment noted. Cross Drains have been added and labeled in both plan and profile. 12. Stop signs appear to be missing or in the wrong locations. Please review the stop sign locations for through traffic design. 0 Response: Comment noted. Stop sign locations have been revised. 13. Please show the mail boxes & cluster box units per RDM Appendix B(1) • Response: Cluster Box Units have been added to Sheet 5 as required per RDM Appendix B(1). 14. Note that the final plan must show conformance with the VDOT Road Design Manual Appendices B(1) and F, as well as any other applicable standards, regulations or other requirements. • Response: Comment noted. We thank you for taking the time to review these plans and trust the above adequately addresses your comments. However, please let me know if you have any questions or require additional information. Sincerely, Chris Mulligan, P.E.