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Staff and
the appropriate referral agencies have reviewed this request
for conformance with the Comprehensive Plan, the Zoning
Ordinance, and other relevant policies and regulations.
Staff and referral agency findings, comments, and
recommendations are summarized below. The actual responses
from referral agencies are available upon request.
Engineering
1.
Under no circumstances shall any use, activity, fill,
and/or development within the floodplain adversely affect
the capacity of the channels or floodways of any
watercourse, drainage ditch or any other drainage facility
or system which would increase flood heights and/or
velocities on adjacent or downstream properties.
2.
A detailed hydrologic and hydraulic flood analysis is
to be provided for the flood corridor using NRCS
methodology. This is to be submitted to FEMA for CLOMR/LOMR
processing.
3.
Proper permits are to be obtained from DEQ, DOE,
and/or VMRC for any work in waters of the US and/or the
state.
4.
The CLOMR must be approved through FEMA prior to the
approval of the infrastructure/site plan. Bonding shall be
required for FEMA fees and studies as required.
5.
Based on a site visit with Parks and Recreation, the
following is an additional condition of approval that they
request be added for the safety of the park guests since
this pond will be so close to the park property: A fence is
to be provided along the common property line between the
Park property and the Vint Hill property. The fence is to
be 3 rail split or vinyl.
6.
There appears to be a well in the proposed grading of
Pond B. Documentation needs to be provided showing
disturbance can occur in the vicinity of the well.
Soils
1.
The Fauquier County Soils Survey shows that there are
soils with a high intermittent water table, low bearing
capacity, and possibility of high shrink-swell clays in the
area of disturbance.
2.
Applicants need to show the areas of contamination
near the disturbance sites. Also show the jurisdictional
wetlands on the plan.
3.
Applicants need to provide documentation that
disturbance can occur near well VNT1A and on top of the
monitoring well.
VDOT
The Special Exception Plan to construct two stormwater
management basins adjacent to the South Run floodplain may
be an acceptable means of meeting development requirements
for Vint Hill. The floodplain limits shown on FEMA FIRM MAP
# 5100550220A is dated 11/01/1979 and is listed as Zone A,
which means the boundary is not predicated on any actual
study, but is approximate only. The 2001 VDOT study for this
reach of South Run made in conjunction with Project
0215-030-102,C501, determined that the 100-year flood
elevations were slightly lower than those which could only
be approximated from the FEMA map. Below is VDOT’s study
elevations that were computed for three cross sections
within this stream reach.
They are based upon a 100 year discharge of 3934 cfs and
are:
100’ upstream from the centerline of Rte. 215 = 338.6
560’ upstream from the centerline of Rte. 215 = 339.4
750’ upstream from the centerline of Rte. 215 = 341.0
It is
VDOT’s opinion that this minor encroachment into the
floodplain of South Run will not impact Rte. 652 in a
negative manner. |
