HomeMy WebLinkAboutSDP201100038 Review Comments 2011-06-10on
Al
COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 229024596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Crozet Library ESC & SWM Plan [SDP201100038, WP0201100032]
Plan preparer: John D. Reno Uohn.reno @PHRA.com]
Owner or rep.: County of Albemarle c/o Finance Administration RM 149
Plan received date: 3 June 2011
Date of comments: 10 June 2011
Reviewer: John P. Diez — Engineering Technician
Engineering has reviewed the final site plan associated with the Crozet Library received 3 June 2011. The
plan can be approved once the following comments have been addressed:
A. Final Site Plan (SDP201100038)
1. Please update the existing contours on Main Street on the existing conditions sheet. Please revise
all necessary sheets to show the new existing contours.
2. Please provide date and source of the topographic information. All topography should be at least
visually field verified by the designer within the last year.
3. A Letter of Intent is needed from the owner of TMP:56A2- 01 -15, TMP:56A2- 01 -14, and
TMP:56A2- 01 -12. Grading easements must be recorded prior to final site plan approval.
4. VDOT approval must be obtained for any plan affecting public right -of -way.
5. Please show the existing contour lines of Main Street as dashed lines throughout the set of plans.
6. Please provide Albemarle County General Construction Notes. Please refer to the Design
Standards Manual. ,
7. Please provide islands at each end of the center area of the parking lot. The island may consist of
grass, wood blocks, or a concrete curb.
8. It appears that some of the runoff from the south side of the parking lot will not be captured by the
biofilter. Please provide either curb or a small ditch /swale to help capture and direct the runoff to
the facility.
B. Erosion and Sediment Control (WP0201100032)
1. Please provide County Erosion and Sediment Control Notes. Please refer to the Design Standards
Manual.
2. Please update the project description and existing site conditions on the E &S narrative. Please
remove anything relating to the construction of a building or library.
3. Please update the construction sequence and include the demolition.
4. Engineering recommends:
a. In the initial phase, remove the silt fence on the north and south side of the site and
replace them with diversion dikes directing the runoff to a sediment trap at the lowest
point of the site on the west side of the property. This will allow the entire site's runoff,
including the construction entrance, to be captured by the sediment trap. The silt fence on
the west side of the property can remain.
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Engineering Review Comments
Page 2 of 2
b. In phase 1, move the sediment trap to the area of the proposed Bio- retention pond.
Reshape the sediment trap so it can be converted to the bio- retention pond once the site
has been stabilized. (Engineering allows over sizing the sediment trap with a weir to allow
runoff to sheet flow from the sediment trap down to the west.)
Please include all proposed grading within the limits of disturbance for all phases.
Please provide dust control (DC) in all E &S phases.
Tree protection must be provided to all trees that are being saved.
Please show the proposed contours for the sediment trap.
C. Stormwater Management Plan (WPO201100032)
9. A completed copy of the standard stormwater maintenance agreement and fee for recordation for
any stormwater management facility must be submitted prior to plan approval.
10. Please provide Albemarle County General Stormwater Management Notes. Please refer to the
Design Standards Manual.