COUNTY OF FAUQUIER
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNING COMMISSION STAFF REPORT
APRIL 25, 2002
EXCEPTION CASE #SE 02-S-19
jamison farms floodplain crossings
applicant is seeking special exception approval to construct two road
crossings through the floodplain of Mill Run and a tributary of Mill Run,
in the New Baltimore Service District.
The larger of the two road crossings would carry Mill Race Drive
through the Mill Run floodplain, with the use of six (6) box culverts. The smaller crossing would carry Jamison Farm Drive across a
tributary of Mill Run with the use of two (2) box culverts.
applicant has submitted a detailed floodplain study to indicate that there
will be no significant off-site impacts to the floodplain level through
the construction process associated with the two road crossings and
associated grading work. The
floodplain study has also been conducted to factor in certain stormwater
management ponds and recreational facilities that will be located in the
floodplain as indicated on the preliminary subdivision plat, which is
currently under review. The
study does indicate a rise in the on-site floodplain elevation, but no
increase to off-site floodplain elevations are indicated.
is staff’s evaluation that this request is in conformance with the
Comprehensive Plan and the applicable Zoning Ordinance provisions, with
the incorporation of the proposed development conditions at Attachment 1.
It should be noted that the stormwater management ponds shown in
the floodplain have not been through final engineering.
Because the size and other design elements of these ponds may
change, it is staff’s evaluation that they either be removed from the
floodplain or removed from the special exception application.
Staff recommends that the Planning Commission forward this
application to the Board of Supervisors with a recommendation of approval,
subject to the staff’s conditions.
and appropriate referral agencies have reviewed this request for
conformance with the Comprehensive Plan, the Zoning Ordinance, and other
relevant policies and regulations. Staff
findings, comments and recommendations, as well as referral agency
Regarding floodplain issues identified in Chapter 2
of the Comprehensive Plan, the applicant has provided a revised and more
detailed flood evaluation than currently available with FEMA maps as
The County Engineer has indicated that the size of
the proposed box culverts used in the road crossing must have a minimum
rise of 4 feet to meet VDOT specifications, as opposed to the 3-foot rise
proposed by the applicant.
It is further noted that the stormwater management
ponds shown in the floodplain and factored into the study could change in
size at the time of final engineering.
For this reason it is recommended that the facilities be removed
from this special exception application, because it cannot be determined
if the final designs for the ponds would increase the floodplain levels
greater than the current study indicates.