HomeMy WebLinkAboutSDP200900021 Review Comments Critical Slope Waiver 2009-04-08*—&A
County of Albemarle
Department of Community Development
Memorandum
To: Summer Frederick, Current Development planning and zoning review
From: Max Greene, Current Development engineering review
Date: 10 April 2009
Subject: Patricia Ann Byrom Forest Preserve Park Improvement (SDP200900021) critical slope waiver
request
The critical slope waiver request has been reviewed. The engineering analysis of the request follows:
Description of critical slope area and proposed disturbance:
The main disturbance of critical slope is a stream crossing for access to the new pedestrian and equine trails for
the above - mentioned County Park expansion. There is an additional critical slope area approximately 600
square feet in total proposed to be disturbed in the horse trailer area. The property is approximately 213.9
acres in total and the proposed parking lot and access way expansion appears to be approximately 4 acres of
disturbance. The Stream crossing is disturbing critical slopes on both sides of the stream and a mitigation plan
will replace the buffer disturbance.
Areas
Acres
Total property
213.9
Total site
4 acres approximately
Critical slopes
0.3
8% of site
Critical slopes disturbed
0.3
100% of critical slopes
Exemptions to critical slopes waivers for driveways, roads and utilities without reasonable alternative
locations:
This disturbance is not exempt.
Compliance with Zoning Ordinance 18 -4.2:
"movement of soil and rock"
Proper slope construction, control of drainage, and vegetative stabilization will prevent any movement of
soil.
"excessive stormwater runoff'
Stormwater runoff will be reduced in this area, as the slopes will be eliminated.
"siltation"
Inspection and bonding by the County will ensure siltation control during construction. Proper stabilization
and maintenance will ensure long term stability.
"loss of aesthetic resource"
This area is not visible from the roads and houses in the area.
"septic effluent"
Public sewer does not service this site, however, the site will have a pump and haul vault toilet.
Based on the review above, there are no engineering concerns which prohibit the disturbance of the critical
slopes as shown.
files El_csw_MRG_Patricia Ann Byrom Forest Preserve Park.doc