HomeMy WebLinkAboutSUB200900061 Review Comments Critical Slope Waiver 2009-05-26�'IRGINLP
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
To: Summer Frederick, Senior Planner
From: Amy Pflaum, Current Development Engineering Review
Subject: SUB200900061, Foxcroft Multi -Use Playfield, Critical Slope Waiver Request
Date received: 14 April 2009
Date of Comment: 26 May 2009
The request for a waiver to develop on areas of critical slope for grading incorporated with the fill project
proposed on TMP 76M1 -04 -A was received on 14 April 2009. The existing critical slopes and proposed grading
are shown on the Erosion & Sediment Control Plan dated 23 December 2008.
The engineering analysis of the request follows:
Description of critical slope area and proposed disturbance:
The critical slope areas within TMP 76M1 -04 -A.
The critical slope disturbance is in the form of grading required to fill in an existing drainage swale and
create a flat spot for neighborhood use.
Areas
Acres
Total site area
0.57 acre parcel
Area of critical slopes
0.32
56% of parcel
Total critical slopes disturbed
0.32
100% of critical slopes
Below, each of the concerns of Zoning Ordinance section 18 -4.2 is addressed:
1. "rapid and/or large scale movement of soil and rock ": Critical slope disturbance is mostly
in the form of fill in a drainage swale that was created during construction of the subdivision.
Large scale movement of soil and rock is not anticipated to occur as a result of this
construction.
2. "excessive stormwater run - off ": An existing stormwater pipe that outletted into the
drainage swale will be extended to carry flow to the intermittent stream. This disturbance
does not propose an increase in existing impervious area, and therefore no excessive
stormwater run -off is expected.
3. "siltation of natural and man -made bodies of water ": The applicant has submitted an
Erosion and Sediment Control Plan which is being reviewed for County compliance. The
Plan proposes measures to capture sediment -laden run -off during construction. These
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": The disturbance of the existing critical slopes with this
development involves the removal of existing vegetation.
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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