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County of Albemarle
Department of Community Development
Memorandum
To: Summer Frederick, Senior Planner
From: Amy Pflaum, Engineering Review
Division: Current Development
Date: September 14, 2009
Subject: SDP200900067, Crozet Library - Preliminary Site Plan
The preliminary site plan for the Crozet Library, submitted on August 12, 2009, has been reviewed.
Current Development Engineering can recommend approval once the following comments have been
addressed:
General Site Plan Comments
Please add a note to Sheet 1 stating that this property is in the Lickinghole Creek Watershed [18-
32.5.6.f].
2. Each development shall be provided with safe and convenient ingress from and egress to one or
more public roads. Without the completion of the New Main Street project, this proposed
development has no vehicular entrance. [18- 32.7.2]
3. The Downtown Crozet District zoning requires new sidewalks on Crozet Avenue and New Main
Street to be 10 -feet wide [18- 20B.7.A]. Although this proposal states that the sidewalk will be
built with a different project, this proposal must accommodate the required width or seek a waiver
of the Ordinance. The applicant may request a waiver of the width requirement under the
provision in 18- 2013.7.1), this is an administrative waiver to the Chief of Current Development.
4. In several locations on the plan, proposed contours do not tie back into existing contours correctly,
please revise. [18- 32.5.6.d]
5. The minimum dimensions of a dumpster pad are 18' deep by 10' wide. The concrete paving 8 feet
in front of the dumpster pad must meet the same strength requirements as the pad. [18- 4.12.19]
6. Please show sight distance triangles at the new entrance. [18- 4.12.17.b]
It is unclear from the proposed grading if an adequate landing of 40 feet at no greater than 4%
slope has been designed at the proposed entrance onto New Main Street. The cross -slope on this
entrance appears to be severe. [18- 4.12.17.b]
8. Please show location of the new rights -of -way of Crozet Avenue and New Main Street, or show
the easements necessary for access, road and sidewalk maintenance. [18- 32.5.6.i]
9. Without the completion of the New Main Street and Crozet Streetscape projects, this proposed
development lacks the infrastructure necessary for storm sewer outfall. An adequate channel
would need to be graded from the point of release to the roadside ditch of Crozet Avenue.
Stormwater Management Comments (for information purposes only)
10. The proposed Regional Stormwater Management Facility, as a Constructed Wetland, will have a
pollutant removal rate of approximately 30 %. This is significantly lower than the required
removal rate for a site with a proposed impervious area of 81% of the parcel. To meet the removal
rate, an on -site BMP would be required, however, this property is in the Lickinghole Basin
drainage area which provides for the area's water quality management. [17- 316(B)]
11. It has not been determined what the storage capability of the Regional Stormwater Management
Facility will be. To meet the requirements of the Water Protection Ordinance, Section 17 -314
Control of Peak Rate and Velocity Runoff, on -site detention may be required.
Final Site Plan comments (for information purposes only)
12. Temporary grading and construction easements will be necessary from TMP's 56A2 -1 -12, 56A2-
1-13, 56A2 -1 -14, and 56A2 -1 -15.
13. If the building site and the parking lot are to be graded at the same time, very little room is left at
the lower elevations of the parcel for erosion and sediment control measures. Please take this into
consideration when designing for E &S.
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