HomeMy WebLinkAboutSDP201100033 Review Comments Critical Slope Waiver 2011-06-08*—&A
County of Albemarle
Department of Community Development
Memorandum
To: Megan Yaniglos, Current Development planning and zoning review
From: Max Greene, Current Development engineering review
Date: 6 June 2011
Subject: Dunlora Forest (SDP201100033) 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 area proposed for disturbance is primarily a portion of an unnamed drainage ravine. There is a grade
difference of approximately 100 feet from top of site to stream buffer. The applicant is proposing to pipe
storm drainage to a stormwater facility and fill in the area to construct an access way and residential units.
Areas
Acres
Total site
22.3 acres approximately
Critical slopes
6.09
, of site
Critical slopes disturbed
3.0
50% 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 from the roads will be conveyed in pipes to a basin, as the slopes will be
reallocated.
"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 visible from the roads and houses in the neighborhood.
"septic effluent"
Public sewer services this neighborhood.
Based on the review above, there are no engineering concerns which prohibit the disturbance of the critical
slopes as shown.
h1c:CDDE1 csvN MRG DunloraForest.doc