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Home My WebLink AboutSUB201900024 Review Comments Road Plan and Comps. 2019-05-31COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, Room 227 Charlottesville, Virginia 22902-4596 Phone (434) 296-5832 Fax (434) 972-4126 Road Plan Review Project title: Pantops Corner —Road Plan Plan preparer: Justin Shimp, Shimp Engineering, 912 E. High Street Charlottesville, VA 22902 f iustin(a,shimp-enizineering com] Owner or Rep: Pantops Corner LC, 12704 Crimson Court, Suite 101; Henrico,VA 23233-7657 Plan received date: 11 Feb 2019 (Rev. 1) 3 May 2019 Date of comments: 10 Apr 2019 (Rev. 1) 31 May 2019 Reviewer: John Anderson SUB201900024 — Road Plan C1 1. Revise trip generation table to include trips generated by Pantops Corner Self Storage (SDP201900008). (Rev. 1) Addressed. 2. Include ZMA2013-00002 Proffer:. (Rev. 1) Addressed. 3. Integrate design response to 4/3/19 SDP201900008 Engineering ISP review road plan -related comments into the revised Road Plan. (Rev. 1) Addressed; Engineering recommends a last check final comparison with associated Site Plan review comments (Self Storage, Wawa, Pantops Corner /hotel). 4. Provide Note ref. to: SDP201900008, SDP201900013, SDP201800089, and WP0201800088. (Rev. 1) Addressed. As follow-up: Please revise typo at SDP201900089, which should read SDP201800089. 5. C2: Review SDP201900008 Engineering ISP comments re. boundary plan. Revise accordingly. (Rev. 1) Comment persists. BLA plat is under review. 6. C3: Label Ex. storm pipe material and diameter, and inlets located on U.S. Rt. 250. (Rev. 1) Addressed. C4 7. Show all existing storm system DIs, ditches, pipes, etc. to which proposed storm lines connect. Show in grayscale. It is unreasonable to show proposed elements without existing system point of reference. (Rev. 1) Addressed. 8. Show connection of proposed 13I-313 to Ex. storm pipe on U.S. Rt. 250. (Rev. 1) Addressed. 9. Show CG-12 ramps graphically at pedestrian crosswalk at Pantops Corner Way entrance, U.S. Rt. 250. (Rev. 1) Partially addressed. As follow up: Detectable warning surfaces need to align without offset; that is, without skew. Once aligned, detectable warning surfaces indicate path or direction of crossing for visually impaired who rely on detectable surface orientation to point them toward a receiving ramp. 10. Show Ex. AT&T easement. (Rev. 1) Addressed. Asefollow-up: Engineering recommends coordinate project design with AT&T. It is possible utility may need to reset utilities at a higher elevation, given proposed depth of fill. Engineering Review Comments Page 2 of 4 11. Label pedestrian crosswalk striping. (Rev. 1) Withdrawn. Extraneous comment. 12. Label all pipes /DIs, consistent with LD-204. (Rev. 1) Addressed. As follow-up: Pantops Corner WPO201800088 shows a portion of Pantops Corner Way storm runoff entering proposed development on TMP (Revised) 78-513, crossing asphalt parking areas to a DI, which then connects with storm Str. Al 1A on Pantops Corner Way. This TMP 78-513 DI captures a portion of Pantops Corner Way road runoff, and should be depicted. It may be shown in grayscale, or labeled to be constructed by others, but should be shown on the Road Plan consistent with design shown on WPO201800088, sheet C4. 13. Provide LD-229, Storm Drain Design Computations. (Rev. 1) Addressed. 14. Revise sheet title to eliminate reference to Site Plan (recommend `Site Layout') (Rev. 1) Addressed. C6 15. Label existing and proposed contours. (Rev. 1) Addressed. 16. Provide roadway CL horizontal radius of curvature, FC-FC travelway width, PC -PT stations, etc. It is surprising that basic horizontal design information is missing from this sheet. (Rev. 1) Partially addressed. Please provide radius of curvature label, on CL. 17. Ref. VDOT Road Design Manual, Appx. B1, pg. B(1)-42 (Fig. 10), and text at pg. B(1)-31, J.1.A.4. for planting strip location between walk and curb. Also, ACDSM , pg. 19, table titled Albemarle County Private Street Standards, asterisk Note: "Where standards are not specified (for guardrail or drainage for example) standards are to be as required by VDOT." Also, table Note 4.: "In the development areas, curb and gutter, sidewalks (5'), and planting strips (6' min) are required." The road sections on C6 do not meet VDOT standards for sidewalk -to -street min. 6' separation. Please revise accordingly. (Rev. 1) Comment persists unless Planning or Zoning approval takes precedence and eliminates this feature of VDOT typical curb /gutter section. Engineering view is that "In the development areas, curb and gutter, sidewalks (5'), and planting strips (6' min) are required." Please revise design or provide narrative response through Planning Division Site Plan review coordinator for this project. 18. Provide Pavement Design. (Rev. 1) Partially addressed. Asfollow-up: Dr =20.9 (Ref. 2018 VDOT Pavement Design Guide for Subdivision and Secondary Roads in Virginia). Dp=20.55, but if base stone depth =9", rather than 8", Dr is satisfied. D20.9. Provide pavement design to meet Dr. C7 19. Show CG-12 ramps graphically at pedestrian crosswalk at Travelway B Interparcel Connection. (Rev. 1) Addressed. 20. Travelway B Interparcel Connection cannot be constructed to the PL without an offsite easement. Provide temporary construction easement. (Rev. 1) Comment persists. Please provide deed bk.-pg. reff, if an off -site temporary construction easement has been recorded. 21. Provide Pavement Design for Travelway B Interparcel Connection. (Rev. 1) Partially addressed. As follow-up: If 50% of gas station ADT (2,304) enters /exits via Road B, Dr=18.33. Dp=16.05, but if BM 25.OA depth =4", rather than 3", Dr is satisfied. Dr=18.33. Provide pavement design to meet Dr. C8 22. Provide /acquire /record sight distance easement along State Rt. 20. (Rev. 1) Comment persists. Please provide sight distance easement on TMP78-5C. Provide receipt of circuit court recordation. It may be simplest to show /record this easement with (revised) SUB201900059, which is under review. 23. C8: Show State Rt. 20 widening between U.S. Rt. 250 and entrance to Pantops Corner Way on Rt. 20. (Rev. 1) Withdrawn. Review error. 24. C9: Provide safety slab and inlet shaping details. (Rev. 1) Addressed. 25. At 4-Apr SRC, SDP201900008 Applicant (Pantops Corner Self Storage/Justin Shimp) volunteered to review question of whether Rt. 20 widening from U.S. 250 to entrance to Pantops Corner Way on Rt. 20 is required with this road plan. Engineering requests Applicant confirm understanding of whether Rt. 20 widening is required with this road plan. Engineering requests this road plan show widening of Engineering Review Comments Page 3 of 4 Rt. 20 since, at time of ZMA2013-00002, Exhibit C-1, TMP #78-58G1 included the now -subdivided portion of land slated to be developed as Pantops Corner Self Storage. If Rt. 20 widening is not shown with this Road Plan, it is unclear when or with what application it would be shown. (Rev. 1) Withdrawn. ZMA201300002 proffer 3. is met by design that `provides two full north bound lanes on Route 20 from its intersection with U.S. Route 250 to the intersection of Pantops Corner Way (Road "A„ RI REST EIGIAl HIGHWAY 78'6 COMMEMOAL CONCEPTUAL ALKHMEH7 A]R _ OPERAARC£C CONNLCAON TOOLYMP"DR H.mA ao�o -e' COMMERICµI FEZOW 1* _ H�YCCN%*Tack .� f �10 7B, Sf j 78 SE 78 SC 711V c HIGHWAY COMMERCIAL 78 Sfi COMMERCIAL OFFICE 111811WAY _ COMMEILCUL [1 COMMERCIAL n i � 1 v° t W C 11 26. Provide Mfr. technical specification for limits of depth of burial for HDPE; specifically for depths proposed in storm sewer profile: A5-A13, BA-137. (Rev. 1) Addressed. ADS reference information: Table 3, Max. cover for ADS HP Storm pipe, https://www.buildsite.com/pdf/ads/HP-Storm-Pipe-12- 60-Technical-Notes-1458378.pdf Table 1, Classes of Embedment and Backfill Materials, https://www.ads- pipe.com/sites/default/files/Installation_Guide_ Single Wall _HDPE_Pipe%o28IG_1.02A%29.pdf These references show that ADS HP Storm ® pipe may be utilized at proposed depths if installed properly at proposed depth with proposed backfill at specified level/s of compaction. 27. Engineering requests RCP be used for storm line between 96" detention system and Str. A7, and between Str. B3 and B2. (Rev. 1) Withdrawn. While design does not reflect request, design is acceptable. Ref. ADS Mfr. literature (links, item 26, above). 28. Provide SL-1 label, Str. BIA. (Rev. 1) Addressed. 29. Provide LD-229, all storm lines. (Rev. 1) Addressed. 30. Revise Note at Storm Sewer Profile: Al-A4 to include reference to WP0201800088. (Rev. 1) Addressed. Engineering Review Comments Page 4 of 4 31. C12: Provide detail for Waterline Typical Steel Sleeve Installation Under Roadways, if required. VDOT Notes, CI, appears to require. (Rev. 1) Addressed. Please feel free to call if any questions. Thank you J. Anderson 434.296-5832 -0069 SUB201900024 Pantops Corner road_053119revl