HomeMy WebLinkAboutSDP202000039 Review Comments Major Amendment, Final Site Plan 2020-12-10� AI
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 229024596
Phone (434) 296-5832 Fax (434) 972-4126
Project:
Project file#:
Plan preparer:
Owner or rep.
Plan received date:
(Rev. 1)
(Rev. 2)
Date of comments:
(Rev. 1)
(Rev. 2)
Reviewer:
Project Coordinator:
SDP2020-00039
Site Plan review
Major Site Plan Amendment, Malloy Ford
SDP2020-00039
Shimp Engineering, 912 E. High St. Charlottesville, VA 22902
Rachel Moon, rachelAshimp-engineering.com
Justin M. Shimp, justin(i�shimp-engineerina.com
Malloy Properties III, c/o Malloy Companies LLC
2070 Seminole Trail, Charlottesville, VA 22901
24 Apr 2020
24 Jun 2020
9 Dec 2020
26 May 2020
24 Jul 2020
10 Dec 2020, No objection
John Anderson
Christopher Perez
Note: If text grayscale, comment addressed with Rev. 1 /2.
C1
1. Recommend provide brief Major Site Plan Amendment narrative.
2. Recommend revise plan title to include reference to SDP2020-00039.
3. Provide title sheet stormwater management notes that, at a minimum, discusses on -site treatment, detention,
reliance on existing facilities, and VSMP /WPO plan submittals (planned, pending).
4. Recommend that title sheet SWM Note discuss nutrient credit purchase, if nutrient purchase proposed.
C2
5. 30,096 SF portion of building TBR: Provide demolition plan, details, narrative, sequence, etc., relative to
site access and limiting effect of demolition on the public, including the traveling public on US Rt. 29.
(Rev. 1) Withdrawn. Applicant (6/22/20 letter): `The building has actually already been demolished.'
6. Provide safety fence (SF) with demolition plan during demolition and construction phases. Immediately
adjacent to site, public visits to purchase or consider new /used car inventory. Construction site must be
isolated to prevent unwitting trespass by children, unaccompanied minors, or others.
Note: Engineering recommends fence be installed using posts set in pavement.
(Rev. 1) Withdrawn. Applicant: `Safety fences were provided at the time of demolition.'
7. Provide narrative /description of proposed boundary line adjustment. Please acknowledge separate
application /review process is required. If not yet submitted, submit BLA Application to Albemarle as
soon as possible. A BLA exhibit shown with Major Site Plan Amendment does not approve a property
boundary line adjustment by effect of site plan approval. Boundary line adjustments are distinct, important
and require separate plat review, and approval. (Rev. 1) Comment persists. Applicant: `Acknowledged, a
BLA plat is currently being prepared by Roger W. Ray & Associates, Inc. and will be submitted for review.
Engineering Review Comments
Page 2 of 4
The BLA is now mentioned in the SPA summary on the cover sheet.' (Rev. 2) Addressed, BLA plat
approved 8/18/20 (Recorded at bk-pg. 5429-77, 11/18/20 (SUB2020001291.)
8. Provide legend definition of symbol NS (Nail set? List on Cl).
9. Label Rt. 29.
10. Label Ex. building `building'.
11. Provide deed bk.-pg, reference for TMP 45-68A.
12. Show /label existing parking area fronting building, show pavement markings.
13. Label adjacent parcels: TMPs 45-68C1, 45-11213, 45-112A, 45-112131.
14. Provide complete ownership information for adjacent parcels, including deed bk.-pg. reference.
15. Show /label existing easements: power, gas, telephone, cable, private /public drainage, any on -site SWM
facility, ACSA /RWSA utility, access, etc. Provide deed bk.-pg, ref for easements.
16. Show /label Rt. 29 right-of-way.
17. Provide Rt. 29 ROW deed bk.-pg. reference. (Rev. 1) Comment persists. Applicant: `... see a reference to
DB 478 PG 523 that might be it but need to confirm before adding this to the plans.' (Rev. 2) Withdrawn.
Applicant email, Dec 8, 2020 5:53 PM: `-have tried to fmd that and cannot fmd it in any adjacent deeds,
Roger Ray does not have it, plats from Roudabush in the 1970's do not show it. I'd like to request we
disregard that comment. The BLA plat was approved without it so I feel that if its good enough for plats to
be recorded in the chain of title its good enough for the site plan?', County email, 12/9/2020 8:14 AM,
accepts this circumstance.
18. Show and label managed steep slopes on adjacent parcels. Use easily distinguishable hatching.
19. C3: Recommend provide specific details for proposed boundary line, with bearing -distance -tie information
to evaluate amendment effects on managed steep slopes, and proposed effect of BLA on major amendment.
(Rev. 1) Applicant: `Acknowledged. To be provided on the plans once BLA plat is complete.' (Rev. 2)
Addressed. Also, item 7, above.
C4
20. Provide stop bar and stop sign at site exit/s to US Rt. 29. (Rev. 1) Withdrawn. Applicant: `A stop sign
would have to be located within VDOT ROW, we will defer to VDOT for this.'
21. Label sidewalks, if any. (Rev. 1) Withdrawn. Applicant: `No sidewalks are to be provided as it is intended
for all customers to remain outside looking at the vehicles on display.'
22. Label US Rt. 29.
23. Although site plan shows HC parking, it does not include CG-12 ramps. If connection is proposed between
HC parking and Ex. 9,120 SF warehouse (to remain as vehicle sales and service), provide accessible ramps.
(Rev. 1) Withdrawn. Applicant: `No connection from the HC parking to the building is proposed. No
customers will enter the building.'
24. Provide /label HC parking sign.
25. Show /label existing travel -way feature immediately south of site which appears to be a frontage road.
(Gifel�:) [ Image removed with Rev. 1 comments. ]
C5
26. Proposed grade at south edge of new outdoor sales /storage /display parking may release to US Rt. 29. Site
runoff may not release to US Rt. 29. Provide grade, spot elevations, and inlet capture as needed to route
runoff to on -site storm detention and prevent off -site release into US Rt. 29. (Rev. 1) Persists. Applicant:
`Less water is to be released from that area of the site in post -development conditions than in pre -
development. It is unclear based on the existing topography we have of that travelway whether water will
drain from the new entrance to an existing DI outside of the ROW or not. We will need to visit the site and
get some more spot elevations.' (Rev. 2) Addressed. Applicant response (12/9/20 letter): `This has been
resolved with the approved application WPO2020-33.' Note: WPO202000033, approved 9/11/20.
27. Level 1 dry conveyance swale design is ambiguous: Level 1 and Level 2 dry swales require underdrains
that daylight. It is unclear if proposed dry swale (based on information presented) is more than a linear low
point. (Rev. 1) NA. Applicant: `The dry swale has been removed.'
28. Provide VSMP /WPO plan. VSMP /WPO plan approval is required prior to Major Site Plan Amendment
approval. (Rev. 1) Addressed. VSMP fWPO202000033 review comments sent to Applicant on 2/24/20.
Engineering Review Comments
Page 3 of 4
29. Provide means for off -site slope runoff to cross CG-2. For example: Provide grade, stone pretreatment, and
curb cut so slope runoff from the south and from channel created by proposed -to -existing grade ties on
slopes to the south may reach proposed new paved surface and transit site to storm collection /conveyance.
(Rev. 1) Addressed. Applicant: `A berm is now provided to direct water away from the parking lot (as it is
directed in existing conditions by the concrete channel).
C6
30. Show dry Swale underdrain connection to downstream receiving point (daylight /piped system). (Rev. 1)
NA. Applicant: `The dry swale has been removed.'
31. Provide public drainage easement for dry swale underdrain that extends to receiving point. (Rev. 1) NA.
Applicant: `The dry swale has been removed.'
32. If dry Swale underdrain receiving point is a piped system, provide public drainage easement for portions of
existing piped system outside VDOT ROW. (Rev. 1) NA. Applicant: `The dry Swale has been removed.'
33. Provide SWM facility easement for dry swale, and storm detention system elements. (Rev. 1) NA.
Applicant: `The dry swale and storm detention system have been removed.'
34. Provide separate easement plat for SWM facility easement and public drainage easements. (Engineering
will format both SWM facility and drainage deed templates once easement plat comments are addressed.)
(Rev. 1) NA. Applicant: `The dry Swale and storm detention system have been removed.'
35. Easement plat recordation is required prior to Major Site Plan Amendment approval. Note: Planning may
require easement plat deed bk.-pg. reference be shown on the Site Plan Amendment. (Rev. 1) NA.
Applicant: `There are no longer proposed easements.'
36. Sloped section of new 36" HDPE is designed to experience two-way flow (inflow, w/ negative slope). This
design will not be approved. Two-way flow is not approved. Design limits velocity to zero when flow
transitions, in to out. This (periodic) zero -velocity section of 36" HDPE will experience debris deposition
that will short-circuit performance. This upslope section of pipe connects with Str. A3, which outlets to a
15" DIA HDPE which connects with a weir structure in MH A2. Anticipate performance issues nearly
immediately once flow reverses, velocity is zero, and debris settles. This two-way section of 36" HDPE is
not an outlet pipe, will not experience self-cleaning velocities, and dead ends. Any piped storm system
must ensure adequate one-way flow with at least 0.5% positive grade in direction of flow. Design proposes
negative grade for water entering this section of pipe from A3. Revise design. Avoid designs that may
work briefly under ideal /hypothetical conditions. Design revision may be accomplished via conventional
storm system design that meets drainage plan review checklist (guidelines) for plan reviewers. Copy
attached. (Note: Innovative designs encounter construction and other unforeseen circumstance. Please
consider post -construction challenge certifying As -built or performance conditions of stormwater systems,
including detention elements at Hillbrook and Sparrow Hill subdivisions.) (Rev. 1) NA. Applicant: `The
detention system has been removed, but this has been acknowledged for future plans. Thank you.'
37. Provide VDOT LD-204, LD-229 (inlet and storm sewer design computations). Include additional or
increased flow in existing storm pipes in LD-229 table. (Rev. 1) Addressed. Applicant: `This information
is now provided. The existing storm pipes do not have an increased flow —overall site drainage curve
number /area to existing pipes has decreased.'
38. Str. Al appears to capture and convey a portion of site runoff without detention. Please ensure VSMP
/WPO plan accounts for un-detained flow. (Rev. 1) Addressed. Applicant: `The VSMP does account for
this, thank you.'
39. Please ensure VSMP plan accounts for off -site slope runoff. Also, item 29 above. (Rev. 1) NA. Applicant:
`The berm was added prior to VSMP submittal, so offsite water is not included.'
40. Provide CG-6 curb with storm inlets wherever curb is adjacent to storm inlets. (Rev. 1) Addressed. As
follow-up: Please label CG-2, CG-6.
41. Provide CG-6 wherever paved area (sheet) runoff concentrates against a curb. (Rev. 1) Addressed. As
follow-up: Please label CG-6.
42. CT Label circled hatched area, which appears on sheets C4-C7. (Rev. 1) Addressed. Graphic removed.
Engineering Review Comments
Page 4 of 4
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C9:
43. Check profile captions against graphic depictions, revise as needed.
44. Revise profiles once storm system is revised. Also, item 36, above.
45. Provide plan view of any MH Structure equipped with weir. Check for conflicts in 3 dimensions, including
placement of MH steps, internal geometry, clearance required to examine /clean -out detention pipes. On
the site plan and WPO plan, provide VDOT inlet shaping, steps, pipe bedding, and CG-6 (IS-1, ST-1, PB-
1) details.
46. Provide weir plate debris cage detail (site and VSMP /WPO plans). (Rev. 1) NA. Applicant: `No longer
applicable.'
47. VDOT land use permit is required for work within VDOT ROW. (Rev. 1) Applicant: `Acknowledged. No
work is proposed within the ROW at this time.'
48. Provide CG-12 detail. (Rev. 1) NA. CG-12 is not required.
Please feel free to call if any questions: 434.296-5832-x3069. Thank you
SDP2020-00039 Malloy Ford -Maj Site Plan Amend_SDP1987-6 121020rev2