HomeMy WebLinkAboutSDP201800082 Review Comments Appeal to BOS 2019-04-25 (3)Christopher Perez
From:
John Anderson
Sent:
Tuesday, April 09, 2019 2:04 PM
To:
Kendra Patrick
Cc:
Christopher Perez
Subject:
RE: Oak Hill Final Site Plan
Kendra,
Thanks for writing.
Engineering review comments are addressed; please feel free to submit print plans to Christopher's attention.
Thanks —we appreciate this.
best,
J. Anderson 434.296-5832 -x3069
From: Kendra Patrick <kendra@shimp-engineering.com>
Sent: Tuesday, April 09, 2019 1:53 PM
To: John Anderson <janderson2@albemarle.org>
Subject: Oak Hill Final Site Plan
John,
Please see the attached Final Site Plan and comment response letter for Oak Hill Convenience Store. Please let me know
if there are revisions I should make before submitting paper copies.
Thank you,
Kendra Patrick
VIRGlN1P
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
Project:
Plan preparer:
Owner or rep.:
Plan received date:
(Rev. 1)
(Rev. 2)
Date of comments:
(Rev. 1)
(Rev. 2)
Reviewer:
Project Coordinator:
SDP2018-00082
Site Plan review
Oak Hill Convenience Store — Final Site Plan
Justin Shimp, PE, Shimp Engineering — 201 E. Main St., Suite M
Charlottesville, VA 22902 fiustin@shimp-engineering com ]
SIDDH LLC, 1096 Foxvale Lane, Charlottesville, VA 22902-8255
30 Oct 2018
17 Dec 2018
19 Feb 2019
30 Nov 2018
23 Jan 2019
5 Mar 2019
John Anderson
Christopher Perez
Initial Site Plan comments, below (FSP, below =FSP Initial):
1. Provide offsite topography that extends at least fifty (50) feet outside the site (18-32.5.2.d.). (FSP)
Addressed.
2. Show and label blue line (watercourse) feature shown on County GIS system. Identify as ditch, intermittent
stream, or perennial stream. Provide date of Engineer's site visit to identify and evaluate characteristics of
this existing topographic drainage feature (18-32.5.2.£). (FSP) Addressed.
3. Provide sight lines on SR 875 (Country Green Road) for design speed limit (18-32.5.2.i.). (FSP) Partially
addressed. As follow-up: Show sight lines on C4 (Site Plan) rather than Grading and Utility plan.
Recommend inset detail at 1" =50' or 60' scale to preserve C4 current scale of 1" =20'. (Rev. 1)
Addressed.
4. Show existing and proposed sewer and drainage facilities (18-32.5.2.j./k.). (FSP) Addressed.
5. Show existing and proposed utilities and easements (18-32.5.2.1.). (FSP) Addressed.
6. Improvements (18-32.5.2.n.) (FSP) Addressed, or withdrawn..
a. Provide pavement design based on ADT. (FSP) Comment withdrawn.
b. Provide pavement section details. (FSP) Addressed.
c. Provide dimensions of proposed fuel storage tanks. (FSP) Addressed.
d. Specify pavement design for pavement above fuel storage tanks. (FSP) Addressed.
7. Provide wheel stops for the twelve (12) 9' X 18' parking spaces. (FSP) Comment withdrawn.
8. Indicate area to be dedicated as SWM Facility Easement (18-32.5.2.o.). (FSP) Addressed.
9. Indicate areas to be permanent drainage easements (18-32.5.2.o.). (FSP) Not addressed. Ref. 18-
32.7.4.2.a. Also, please see WP0201800049 SWM Plan comment 5u. (7-Nov 2018). (Rev. 1)
Addressed. SUB201900005, Easement Plat, is under review. (Rev. 2) Plat under review.
Engineering Review Comments
Page 2 of 3
a. Easements required. The following easements shall be required:
1. An easement for all stormwater management facilities and drainage control improvements located
on the site shall be established whenever the improvement is designed, constructed, or both,
beyond a street right-of-way or access easement, and shall extend from all drainage outfalls to an
adequate channel as defined in 9VAC25-840-10 that satisfies the minimum standards in 9VAC25-
840-40(19) to the boundary of the site.
10. Provide curb and gutter for parking lot (18-4.12.15.g.). (FSP) Not addressed. Ref. 18-4.12.15.g. Gutter is
required. Replace CG-2 with CG-6. Provide CG-6 detail. (Rev. 1) Addressed. Applicant response:
`While curb is required for this site, gutter is only required "where necessary to control or direct stormwater
runoff' (I 8.4.12.15.g.). Gutter is necessary for very flat parking lots (around 1 % slope). With a parking lot
slope of 2-3%, curbs are sufficient. Gutter was added in one area near the parallel parking where the grade
is rather flat.' Engineering accepts this design approach.
11. Show preserved and managed steep slopes. (FSP) Addressed.
12. State building code requires building permits when a wall retains three (3) or more feet of unbalanced fill.
Albemarle County Building Inspections Division requires engineered design when wall is four (4) or more
feet in height, in addition to a building permit. Please submit engineered design /building permit
application, if needed. (FSP) Not addressed. Applicant response: `The design is in process and will be
submitted with the Final Site Plan at a later time.' Engineering acknowledges Applicant intent to furnish
design with the FSP at a later time. (Rev. 1) In progress. Applicant response: `Retaining wall design is in
progress.' (Rev. 2) Addressed.
13. Proposed slopes steeper than 3:1 require landscaping vegetation hardier than grass. Provide acceptable
landscaping. Ref. ACDSM, Sec. 8, Grading, A.2 (p. 22 of .PDF; Link:
http://www.albemarle.or)4/nyload/images/forms center/departments/community development/forms/design standards
manual/Albemarle County Design Standards Manual 2015-04-25 draft.pdf ). (FSP) Addressed.
14. Provide complete drainage design. Provide calculations, plan and profile. (FSP) Partially addressed. As
follow-up: Revise LD-229, Storm Drain Design Computations table, C8, to include A3 to A2 (31.47 LF
15" HDPE pipe). (Rev. 1) Addressed.
15. Provide curb and gutter. Evaluate inlet spread and capacity. (FSP) Partially addressed. As follow-up:
Provide gutter. Revise LD-204 to include gutter cross -slope. (Rev. 1) Addressed.
16. Provide sight distance easements, as needed. (FSP) Addressed. Sight distance easement/s are not required.
17. VSMP Approval is required. (FSP) In process. WPO201800049 is under review; most recent review
comments: 7-Nov 2018. (Rev. 1) Addressed. WPO201800049, `Approved (1/14/19) pending purchase of
0.32 lb./yr. nutrient credits.' (CV comment) (Rev. 2) Comment persists.
18. Required for VSMP Approval:
a. VSMP Plan meeting requirements of 17-401; (FSP) In process: see #17, above.
b. SWM Facility Maintenance Agreement recordation; (FSP) Applicant acknowledges.
c. SWM and Permanent Drainage Easement recordation. (FSP) Applicant acknowledges.
d. Provide minimum distance from release point of (detained) stormwater flow and minimum distance
from sheet flow release from any edge of paved areas to sj g on -site well serving multiple
residents of at least 100 feet. Provide pipe conduit of sufficient length to convey storm runoff past
(or beyond) the well, as needed. In certain circumstance, storm runoff may contain petroleum
distillate. Ensure daylight release point is at least 100 feet from the on -site well. From discharge
outfall, at no point may drainage design show storm runoff release from vehicle fueling areas or
storage tank (fill) port areas within one hundred (100) feet of the single on -site well, which serves
multiple residential dwellings (mobile homes). (Rev. 1) Addressed. Applicant response: `The
discharge point is 103.2' from the well. This dimension is shown on Sheet C5.'
New (with FSP)
19. Recommend ramp (CG-12) for loading space. (Rev. 1) Addressed.
20. Recommend sign that identifies loading space. (Rev. 1) Addressed.
21. Revise Max. wall height (6' =Max.) — Ref. (retaining wall) construction standards at 18-30.7.5.a. (Rev. 1)
Addressed. Applicant response: `The retaining wall is a maximum of 6' high in the managed steep slopes
Engineering Review Comments
Page 3 of 3
overlay districts. It reaches a maximum of 8' outside of the steep slopes overlay. A note has been added
that it is not to exceed 6' in the steep slopes area.'
22. Ensure parking spaces are separated from entrances and streets (to prevent queuing onto streets) a min 18'
from back of entrance radius [see VDOT Road Design Manual, App. F, throat length and corner clearance].
Revise HC parking space location to meet VDOT Road Design Manual App. F, throat length and corner
clearance. Also, please ref. Final Site Plan review checklist attached to review comments. (Rev. 1)
Addressed. Applicant response: `After receiving feedback from an Access Management Exception
Request submitted to VDOT, we have revised our parking lot such that there are separate entrances for
entering and exiting the site. The prior entrance near the HC parking space is now exit only, which will
prevent queuing onto the street.' Engineering appreciates and accepts this statement.
23. Provide (vehicular) guardrail for the four 9' x 18' parking spaces adjacent to retaining wall. (Rev. 1) Not
addressed. Applicant response: `Rather than providing vehicular guardrail, we have revised the retaining
wall in that area so that there is a 4' separation between the back of curb and the retaining wall.' A 4' space
is: not a protective barrier, or sufficient, or consistent with Engineering Final Site Plan review checklist,
which reads: `Guardrail with VDOT designations or equivalent shown for retaining walls next to parking or
travelways.' Revise design. Provide guardrail. (Rev. 2) Partially addressed. As follow-up: Ref. C 10
Retaining Wall design.
a. Ensure proposed GR-2 guardrail location and installation are consistent with Retaining Wall
design. Provide geotechnical-PE written confirmation that proposed location of GR-2 will not
compromise or affect design or integrity of retaining wall, else relocate GR-2.
b. Wall Sta. 54 (f) to 64.5 exceeds max. 6' wall ht. (TW=480.67'; BW=473.34'). Revise design.
c. Coordinate with geotechnical-PE.
d. Provide VDOT GR-2 detail.
24. Provide handrail and handrail detail for retaining wall. (Rev. 1) Addressed.
25. Label CG-12 near HC parking space. (Rev. 1) Addressed.
26. Provide VDOT IS-1 detail (inlet shaping). (Rev. 1) Addressed.
[Link: http://www.extranet.vdot.state.va.us/LocDes/Electronic%20Pubs/Standards/Sectionl00/106 08.pdf]
27. Revise plan title to reference SDP201800082. (Rev. 1) Addressed.
28. C8 /Note: 0.2% (detention pipe) grade must be shown by As -built survey to ensure positive drainage.
(Rev. 1) Partially addressed. Applicant response: `A note to this effect has been placed in detail 3/C8.'
As follow-up: Please copy (this) note from detail 3 to detail 6, Detention Pipe B Profile (0.2% grade).
(Rev. 2) Addressed.
29. C6: Tree canopy intersects loading space. Revise to ensure 14' vertical clear space above loading space.
(Rev. 1) Addressed.
30. Label, dimension, and provide detail for proposed new landscape screening fence near west property line.
(Rev. 1) Partially addressed. As follow-up: Please refine detail 2, sheet C8, so all dimensions, including
height, bedding stone depth, etc., are readable —for the moment, print is obscure, and requires guesswork.
(Rev. 2) Addressed.
31. New: C4 label: `42" handrails on wall (HR-1)' is inconsistent with C10 retaining wall details, which show
24" setback, with 42 " tall safety handrail or fence located 2' behind top of wall. Also, CIO, General Note
20. Revise handrail label, C4, consistent with retaining wall design /Note 20.
Please feel free to call if any questions: 434.296-5832—0069.
Thank you
SDP201800082-Oak Hill Convenience Store FSP 030519rev2.doc