HomeMy WebLinkAboutSUB201400063 Review Comments Preliminary Plat 2014-05-21COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Fontana — Phase 4C
Plan preparer: Terra Engineering and Land Solutions, P.C.
Owner or rep.: Fontana Land Trust
Plan received date: 15 Apr 2014
Date of comments: 20 May 2014
Reviewer: Michelle Roberge
Engineering has completed the review of application SUB2014 -63.
A. Preliminary Subdivision Plat (SUB201400063)
1) Please submit a separate road plan with an application. Please address on road plans the abrupt
grade changes near the entrance of Belluno Lane and Brunello Ct. Show a sag curves. The road
plans included on this preliminary subdivision plat will be thoroughly reviewed with the road
plan application.
2) Please state on plan if roads are public or private. Also, label existing roads as public or private.
3) The pedestrian paths for Phase 4C are not shown. Please clarify the trail location. The trails
should show interconnection with other Fontana phases.
4) Proffer 5 states that pedestrian paths shall be Class A, Type 1 from the Albemarle County Design
Standards Manual. Please show section detail.
H. Trail Standards:
Classification
Min. surface
requirements
Min.
61 idth
Design
alignment
Other design
considerations
Class A — type
2" asphalt
-5' surface
10% maximum
Drainage design as
1 low-
over 4"
longitudinal
given below
maintenance
aggregate
grade, 2%
pedestrian
base
maximum cross -
path
grade
5) Trails should be in common areas, and maintained through neighborhood covenants or private
agreements. When not in common areas, all trails are required to have easements which must be a
minimum of 10' wide.
6) Brunello Court is proposed as 24' wide f/c to Fc. Are you proposing parking on one side or no
parking at all? Please clarify.
7) It is not clear why Belluno Lane is designed as a rural road with a ditch. The curb and gutter
waiver request for Belluno Lane does not appear to have been approved by the Planning
Commision or the BOS. Also, the road section on sheet C6.0.0 does not appear to meet VDOT
road standards. Please revise to meet VDOT road standards from Appendix B(1) -14.
8) Previous comments mentioned that a waterline connection from the existing Ashcroft Subdivision
may be necessary to achieve adequate fire flows. Please clarify if this is still the case.
9) Driveways cannot be sloped greater than 10 %. Please label all the driveway grades to clarify if
proffer 2(G) is satisfied.
10) Please note that the SWM and Drainage calcs will be thoroughly reviewed with a WPO
application. An approval of this preliminary plat does not allow you to grade the site. An
approved WPO application (E &S and SWM plans), along with posting of bonds will be required
prior to obtaining a grading permit.
11) Please show the approved pedestrian/emergency connector from the Cascadia Subdivision to
Fontana 4C. This should match the approved ZMA2004 -18.
12) Label the standard VDOT driveway aprons and show the detail.
13) The critical slopes section in the ordinance has changed. A critical slopes waiver was already
approved, but plans should meet Section 30.7.5 Design Standards. This is in conjunction with
comment # 17.
14) Please show SWM easements and access easements on plan.
15) Some trees on the landscaping plan are in conflict with the stormsewer pipes. Please address.
16) It appears that the existing rip rap should be removed on final grading plan. Please clarify.
17) Please address the Final Grading Plan comments to satisfy Proffer 2 :
a. There appears to be a significant amount of 2:1 slopes behind lots as backyards. Proffer
2(D) calls for 3:1 slopes. Any slopes steeper than 3:1 up to 2:1 should be the last resort
since ground cover will be harder to establish.
b. It will be difficult to grade and maintain the swales behind lots 19 -27 and lots 14 -18.
These swales are too close to decks. This also assumes that homeowners will not regrade
their own backyards. There are also areas that do not meet the "inlet for every 3 lot"
policy. I recommend showing retaining walls to provide backyards for lots and showing
easements for swales along the retaining wall.
c. Please note the final grading plan shall be approved by the County Engineer prior to the
approval of the first preliminary subdivision plat.
d. On Brunello Court, there is a low point near station 14 +50. Please label the elevation on
Sheet C4.0.1. It appears this area will need to address relief for lots 23,24, and 31 if
inlets are clogged.
e. Clarify stormsewer behind lots 30 -34. There is only one inlet between lots 29 -30. Capture
as much of the impervious area into the stormsewer. It appears that a substantial berm
may be needed to divert drainage from steep slopes to the SWM facility.
f. There is a proposed Swale and berm behind lots 1 -5. It appears grading will be beyond
the property line. Please address and obtain permission from adjacent property owners.
g. Clarify where runoff for single family dwellings will be diverted for lot 5 -11. Will it be
towards front of homes or released in backyards?
Sincerely,
�10-
Michelle Roberge