HomeMy WebLinkAboutWPO201200016 Review Comments Erosion Control Plan 2012-02-27ALg�,��
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Kroger Fuel Center Erosion and Sediment Control Plan; WPO- 2012 -00016
Plan preparer: Robinson LOIA Roof Replacement PC
Owner or rep.: AEW SCT Rio Hill LLC c/o Hart Realty Advisors Inc.
Date received: 8 February 2012
Date of Comment: 27 February 2012
Engineer: Phil Custer
The erosion and sediment control plan for the Kroger Fuel Center (WPO- 2012 - 00016), received on 8
February 2012, has been reviewed. The plan can be approved after the following comments have been
addressed:
1. The proposed grading plan calls for several weeks of earthwork. Considering this and the large
drainage area to inlet 7 during the initial phases of construction, sediment trap inlet protection
must be utilized on this structure. Please show proposed trap grading on sheet C -4 with a top
contour of 504.44, a bottom contour of 502.44, and a calculation showing the necessary trap
volume. Because of the proximity to construction traffic, sizing the trap for the full pre -
development watershed, considering the full 134 cy /acre and maximum 2ft depth standards, may
be problematic. To reduce the required trap size, curb inlet 1, adjacent curbing, and the
downstream drainage should be constructed before the existing asphalt pavement is demolished.
Once this system is setup to bypass the clean water around the construction site, the trap on
structure 7 and the rest of the project can move forward. Also, county engineering would look
favorably on granting a variance of the 134cy /acre volume standard, allowing a wet volume equal
to 67cy /acre, as long as block and gravel inlet protection is used above the wet pond volume. A
variance request should be written in a word document or email to the county engineer. All
variance requests require a fee of $150 in order to be officially reviewed.
2. On the existing parking lot curb line south of the gas canopy, please provide a note stating that if
existing curb is to be demolished, the contractor shall replace with a diversion dike directing
runoff to one of the eastern inlet protections.
3. Please provide Dust Control symbols (DC) on the plan.
4. Please replace the state's CE detail with the county's Paved Wash Rack detail located on page 28
of 35 in the latest edition of the County's Design Manual. For the current location, please provide
a note that states that existing pavement will be used and maintained as a construction entrance
until approved by the county Erosion and Sediment Control Inspector.
5. At the south and southeast entrances to the site, please provide a mountable asphalt berm/RWD to
direct construction runoff to the inlet protection measures within the site on structures 5 and 7.
6. Please replace all straw bale barriers with silt fence and remove the detail from the set.
7. Before a grading permit can be issued by the county, the applicant will need to pay the first year
permit and inspection fee and post the erosion and sediment control bond. To receive a ESC bond,
please provide a completed Bond Estimate Request Form to the county engineer once the ESC
plan has been approved.
File: E1_ecp_PBC _ wpo- 2012 -00016 Kroger Fuel Center.doc