HomeMy WebLinkAboutSDP201800002 Review Comments Final Site Plan and Comps. 2018-09-20 (2)County of Albemarle
Department of Community Development
Memorandum
To: Cameron Langille
From: Emily Cox
Date: 25 July 2018
Rev 1 Date: 20 Sept 2018
Subject: Brookhill Block 4A & 4B — (SDP201800050)
The final site plan for Brookhill — Blocks 4A & 4B has been reviewed by Engineering. The following
comments will need to be addressed before approval:
1. WPO Plan must be approved before final site plan can be approved. Rev. 1: Comment
not addressed.
2. Road Plan must be approved before final site plan can be approved. Rev. 1: Comment
not addressed.
3. VDOT approval is necessary before site plan can be approved. Rev. 1: Comment not
addressed.
4. Show steep slopes on all applicable sheets. Rev. 1: Refer to County Code Section
30.7.4.b.l.h regarding submission of new topographic information showing slopes
less than 25%. Proposed disturbance to preserved steep slopes as shown is not
permitted.
5. Show stormwater management facility easements. These will need to be recorded with a
deed. These are intended to be processed with the subdivision plat of Archer and Stella
Lane, correct? Rev. 1: Please label these as stormwater management facility
easements, not storm drain easements. These will need deeds when they are
recorded.
6. There is no existing 100 buffer on the northern end of the site. Please remove label. This
is proposed greenspace/buffer or open space. Rev. 1: Sheet C-106A still shows this
label.
7. Sidewalk adjacent to parking should be 6' wide, unless bumper blocks are provided. See
design standards manual, section 7.C.
http://www.albemarle.org/upload/images/forms_center/departments/community developm
ent/forms/design standards _manual/Albemarle _ County Design Standards_ Manual_2015
-04-25_draft.pdf Rev. 1: Comment addressed.
8. Label all 3:1 and 2:1 slopes. Rev. 1: Labels are not visible. Please ensure they are
shown.
9. Proposed 2:1 slopes must specify low maintenance (not grass) ground cover. Please note
this on the landscape sheets. Rev. 1: The type of planting that can withstand this slope
must be actually specified on the landscape plan.
10. Provide drainage divide sheet for the storm pipes. This was included in the WPO plan,
but should accompany the pipe calculations. Rev. 1: Comment addressed.
11. Label proposed curbing (CG-6, etc.) Rev. 1: Comment addressed.
Engineering Review Comments
Page 2 of 2
12. Provide dumpster/trash compactor pad detail. Rev. 1: Provide detail for the PAD.
Ensure dumpster pad detail or specification has a minimum 4" stone base and 6"
concrete of 3000psi at 28 days, or stronger, reinforced with a minimum grid of wire
reinforcing or #4 bars at 12" on center.
13. The location of loading spaces is not clear. Please label and show dimensions. Rev. 1:
Comment addressed.
14. Per the COD, Page 23, provide final design of retaining walls and approval to be over 6
feet in height. Rev. 1: Comment still valid.
15. Retaining wall should not be so close to stormwater facility and easement. There must be
enough space for equipment/maintenance of stormwater facility. See Section 6 of the
Design Standards Manual equipment landing graphic. Rev. 1: Comment addressed.
16. Show the handicap parking areas on the grading plan with spots verifying ADA compliant
grading. Rev. 1: Comment addressed.
17. Storm drain easements are not necessary on all pipes. They are needed for stormwater
management facilities and public systems. See Section 6 of the Design Standards Manual.
Contact engineering with any questions. Rev. 1: Ensure that all pipes associates with
SWM facilities are in an easement. This includes the isolator row and the outfall
from the underground storage. Also, the ditches to the level spreaders should be in
an easement.
18. Provide calculations for the ditches going to the level spreader. Rev. 1: Swale
calculations shown, however it is not clear which channel is which? Also, please
provide the drainage area to these swales (show how Q was calculated).
19. Provide Rip -rap sizing calculations. Rev. 1: Comment addressed.
20. Show HGL line on storm profiles. Also, provide VDOT form LD-347 for HGL
calculations. It appears rim elevation was missing on sheet C-808. Rev. 1: Comment
addressed.
21. Rev. 1: Velocity from pipe Al or AO is too high. Velocity must be less than 15 ft/s.