HomeMy WebLinkAboutSDP201800048 Review Comments Final Site Plan and Comps. 2018-11-02WAWA — FINAL
SDP201800048
Engineering comments (New comments in bold):
1. VSMP plan approval required before the FSP can be approved.
(Rev.2) Comment still valid.
2. Remove the E&SC and SWM plan sheets from the FSP (Sheets C404-409, C601-C604).
(Rev.2) Addressed.
3. Show all existing easements (access, drainage, sight, sanitary easements, etc.) with deed
book & page references.
(Rev.2) Addressed.
4. Show existing ROW line and width for streets with deed book & page references.
(Rev.2) Acknowedged. Applicant is still researching any deed reference for adjacent
streets.
5. Offsite grading and improvements will need to be shown in an easement. Provide copy
of letter of intent to grant them from offsite property owner.
(Rev.2) Addressed.
6. Proposed work outside of property limits to be shown in an easement.
(Rev.2) Addressed.
7. Show proposed easements and indicate whether they are public or private (outside of
ROW).
(Rev.2) Not addressed.
a. Connection from STM EX-A4 and outfall to be shown in a 20' (Min) easement;
offset from centerline of structure.
b. STM E-6 and outfall appears to be receiving water from the public road (Rt. 29),
and therefore should be should in a public easement.
8. Show stormwater vault system in a SWF easement. Required width: 10'+(pipe dia. or
channel width) + 2'+ 2(depth-5'). {Design Manual, section 6)
(Rev.2) Show a 10' offset for the easement minimum around SWF. Also show a 20'
(Min) easement around the outfall structures of SWF that extend to the edge of
property.
9. Provide a drainage summary table similar to the sanitary schedule. Indicate type of
VDOT structure.
Stricture
Description
Length
Iuvert
Invert
Slape
Remarks
Niunber
In
Out
1
42-- RCP
70-
24.30
4?4.00
100.00%
Proizde
Class III
2. EW
2
DI- 3B
L=S
26.00
43100
-
IS-1
Top
3
PG-2A
400-
420.00
400.00
5.00%
D=1-'-'
4
Grade
200-
420.00
415.00
1. ,0%
D=lS--
Swale
(Rev.2) Will need to verify the drainage design of inlet structures (TBA with review of
VSMP plan).
10. Show the existing Rt.29 pavement & edge/curb connecting from your proposed right
turn lane.
(Rev.2) Addressed.
11. Show VDOT designations for type of drainage structure/entrance, including curb &
gutter.
(Rev.2) Not Addressed. Show callouts on the site plan.
12. Provide curb & gutter details with callouts w/VDOT designation.
(Rev.2) See #11 above.
13. Sheet C401—
a. Proposed slopes greater than 3:1 to have low maintenance (not grass) ground
cover specified on the plans, which will not require mowing. {Design Manual,
section 81
(Rev.2) Addressed.
b. Provide entrance landing that meet VDOT standard of 2% max grade and having
a 50' minimum length.
(Rev.2) Addressed.
14. A safety provision (a guardrail, wall or fence) required to be installed for walls over 30"
high.
(Rev.2) I'm not seeing the guardrail called out (GR-2, etc.). The guardrail should be a
few feet in front of the wall. If the guardrail is up against the wall or integrated into
the wall a certified wall design would be required.
15. Sheet C301— Label wall max height.
(Rev.2) Addressed.
16. Sheet C701— You're showing trees in the path of drainage. Proposed trees should be
outside of drainage easements. {Design Manual, section 61
(Rev.2) Not addressed. Landscape plan — The trees located near STM E-2, STM F-2,
STM E-6, and between B-2 & B-3, between E-3 & E-4 would have to be removed if
within a drainage easement.
17. Provide drain inlet in SE corner of parking lot. Also, drainage should not run across,
through, or backwater in dumpster areas [18-4.12.19].
(Rev.2) Addressed.
18. Provide throat length for each DI.
(Rev.2) Currently addressed.
19. Add note to the profiles/details that safety slabs (SL-1) shall be installed for any
manhole structures taller than 12'.
(Rev.2) Addressed.
20. Add note to the profiles/details that concrete inlet shaping (IS-1) shall be in any
structure with a 4' or greater drop.
(Rev.2) Partially addressed. Add note to the profiles.
21. It looks like some of storm pipes could be operating under pressure under design flow
HGL. The network should operate under open channel flow where no pressure situation
exists. {Design Manual, section 61
(Rev.2) Currently addressed.
22. Provide typical section, lining type requirement & design talcs. for the ditch alongside
Proffit Road.
(Rev.2) Addressed.
23. (Rev.2) Trench drains - Show dimensions in the details (sheet C-801), show profiles
(sheet C-502), and provide correct design (sheet C-503).
24. (Rev.2) VDOT to extend ROW along Proffit Rd (Rt.649) improvements?