HomeMy WebLinkAboutSUB200800287 Review Comments Preliminary Plat 2012-08-10*-&A
County of Albemarle
Department of Community Development
Memorandum
To: Megan Yaniglos, Planning Department
From: Phil Custer, Engineering Department
Date: 10 August 2012
Subject: Fontana Phase 4C Preliminary Plat (SUB- 2008 - 00287)
The fifth submittal of the preliminary plat for Fontana Phase 4C, received on 25 June 2012, has been
reviewed. Because of the 15 months between submittals and the length of the last engineering comment
letter, I have started over with a new document. Engineering can recommend approval of the preliminary
plat after the following comments are addressed.
1. After further discussion between the Zoning and Engineering Departments regarding the
prohibition of retaining walls in Proffer 2.13, the determination has been made that retaining walls
can be permitted in Open Space lots (in Fontana 4C, the extended detention facility lot) if they are
limited to tiered 3ft walls with a reasonable separation between them.
2. The applicant has provided fees for Final Stormwater Management and Road Plan reviews. These
plans were requested by the County to address uncertainties with the overlot grading plan in the
area of Belluno Lane. However, the fifth submittal lacks most of the information necessary to
review a final road and stormwater plan such as vertical street profiles showing landings at
intersections, final routings of the critical storm, stormwater facility cross - sections, stormwater
facility landscape plans, etc. The applicant acknowledges throughout his response letter that the
issues raised by the county in the previous four reviews will be addressed in the final construction
plan. Considering the lack of a submittal of complete road and stormwater plans, a refund of $550
will be given to the applicant.
3. The stormwater concept in Section 2 is unacceptable. The two biofilters would be nuisances for
the owners of Lots 1, 10, and 11 and will be extremely difficult for county inspection and
enforcement personnel after construction. Additionally, the northern facility would not work as
designed because the pipe from Belluno Lane would act as a second outlet. The facilities must be
combined and placed in an open space parcel located where Lot 1 is currently proposed. Since
there are no stormwater facilities capturing the western half of Section 1, the Via Florence roadside
ditch must be directed into this new facility. It looks as though an alternate alignment of Belluno
Lane (and the elimination of Cortina Way) could allow Section 2 to be modified without losing a
lot. After a preliminary review of this possible alteration, the Zoning Department believes this
change would still allow the plan to be in "general accord" with the application plan.
4. The grading plan around Belluno Lane must be adjusted so that a reasonable k -value and transition
can occur between the entrance onto Via Florence and the 10% grade. The grade currently shown
by the applicant is unrealistic. A safe landing is also needed at this intersection.
5. Please adjust the alignment of Belluno Lane so that a radius of at least 200ft is provided for each
horizontal curve. This radius is the minimum allowed by VDOT on residential streets.
6. A storm drain system is needed from Lot 3 to the biofilter to comply with Proffer 2.E.
7. The Albemarle County Fire and Rescue Department requires all culdesacs to be at least 96ft in
diameter.
File: E5_ppt_PBC_sub200800287.doc