HomeMy WebLinkAboutSDP200900062 Review Comments Critical Slope Waiver 2009-11-16�'IRGI1�1�
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
To: Elizabeth Marrotta, Senior Planner
From: Amy Pflaum, Current Development Engineering Review
Subject: SDP200900062, Free Bridge Office, Critical Slope Waiver Request
Date received: 20 October 2009
Date of Comment: 16 November 2009 2009
The request for a waiver to develop on areas of critical slope for grading incorporated with proposed development
on TMP 78 -11 was received on 20 October 2009. The existing critical slopes and proposed grading are shown on
the Preliminary Site Plan dated 19 October 2009. The disturbance is for the construction of a 2 -story office
building and adjacent parking.
In accordance with the Section 18 -4.2.5 the agent may waive the prohibition of disturbing critical slopes
on any parcel not within the Rural Areas (RA), Monticello Historic District (MHD) or Village
Residential (VR) zoning districts if the critical slopes were created during the development of the
property pursuant to a site plan approved by the county.
The critical slope areas to be disturbed are manmade slopes created with the Town & Country and
Olympia Drive Road construction (Site Plan, WP0200600075, approved 8/20/2007) and the Free Bridge
Auto Sales construction (Major Amendment, SDP200000062, approved 12/14/2000).
The agent may grant a waiver if it is found that:
1. The property is not identified in the open space plan as one having any protected resources and a
field inspection has confirmed that there are no significant or critical features on the property identified
for protection in the open space plan: TMP78 -11 is not identified in the open space plan for protection.
2. There is no reasonable alternative that would eliminate or reduce the disturbance of critical slopes:
Manmade critical slopes cover 25% of the parcel, development without disturbance would be limited.
3. The developer or subdivider submitted and obtained approval from the program authority of an
erosion and sediment control plan, regardless of whether the area disturbed is less than ten thousand
(10,000) square feet: Approval of Erosion & Sediment Control Plan is required prior to the approval of a
Final Site Plan for this development.
4. The developer or subdivider submitted and obtained approval from the county engineer of a plan that
describes how the movement of soil and rock, stormwater runoff, siltation of natural and man -made
bodies of water, the loss of aesthetic resources identified in the open space element of the
comprehensive plan and, in the event of the failure of a treatment works and subsurface drainfield, a
greater travel distance of septic effluent, will be mitigated through design, construction techniques,
revegetation, stormwater management and other best management practices: Please see Request for
Waiver submitted October 12, 2009 by Dominion Engineering.
Engineering analysis is as follows:
Below, each of the concerns of Zoning Ordinance section 18 -4.2 is addressed:
"rapid and/or large scale movement of soil and rock ": The areas of critical slope are the cut
area for Olympia Drive and the embankment of a temporary erosion & sediment control
basin. Large scale movement of soil and rock is not anticipated to occur as a result of this
construction.
2. "excessive stormwater run - off ": Conceptual stormwater management for the development,
as shown on the preliminary site plan will be refined prior to Current Development
engineering approval of the final site plan. Olympia Drive currently has storm sewer features
in place, directing stormwater to a regional (non- County owned) facility. Excessive
stormwater run -off is not expected to occur.
3. "siltation of natural and man -made bodies of water ": The applicant will submit an Erosion
and Sediment Control Plan with the Final Site Plan which will be reviewed for County and
State compliance. Proposed E &S measures are anticipated to reduce sediment -laden runoff
from leaving the site. Inspection and bonding by the County will monitor maintenance of the
erosion control facilities during construction. Proper stabilization and maintenance will
achieve long term stability.
4. "loss of aesthetic resource": This is an area that has been previously disturbed. Existing
mature vegetation is expected to be sparse.
5. "septic effluent ": The existing subdivision is served by public sewer and there are no septic
drainfields within the area of this disturbance.
No portion of this site plan is located inside the 100 -year flood plain area according to FEMA Maps,
dated 04 February 2005.
Based on the above review, the applicant has satisfactorily addressed the technical criteria for the
disturbance of critical slopes.
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