HomeMy WebLinkAboutWPO201100055 Review Comments Erosion Control Plan 2011-08-03ALg�,��
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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: The Shops at Stonefield -Regal Cinema Final Site, ESC, and SWM Plans;
SDP-2011-00047
Plan preparer: Mr. Herb White, PE; W & W Associates
Owner or rep.: Albemarle Place EAAP LLC
Date received: 22 June 2011
Date of Comment: 3 August 2011
Engineer: Phil Custer
The final site, ESC, and SWM plans for The Shops at Stonefield -Regal Cinema (SDP- 2011 - 00047)
received on 22 June 2011, have been reviewed. The plans can be approved after the following comments
have been addressed:
A. Final Site Plan, Private Road Plan, and Drainage Plan Review (SDP- 2011 - 00047)
1. Engineering review is concerned with many of the parking spaces close to the entrances that have
limited sight lines because of the building walls. Some of the spaces near the entrances may need
to be eliminated. Please provide an analysis of parking spaces around the entrances in relation to
the sight lines. (18- 7.2.7)
2. Please provide typical details for the walls used on site. The details should show a handrail at the
top of the wall.
3. For all walls taller than 4ft on Sheet C -7, please callout a handrail.
4. Please provide the deedbook and page number for the ACSA easement on the Sperry property for
the new line to EX MH S -17. Please note that this site plan cannot be approved until this
easement is recorded.
5. Please add a ditch north of Main Street (on the hotel block) from Inglewood to a new drop inlet
that goes into Inlet 43.6.
6. For storm drain and road profiles, please also show the existing grade line of the site before the
mass grading plan was executed.
B. Erosion and Sediment Control Plan Review (no application yet submitted)
1. The set submitted to the county includes ESC and SWM sheets, but no WPO application was
submitted. A review of both plans was performed anyway. Please provide a WPO application and
$600 fee as soon as possible so that this comment letter can be tied to this application.
2. Because of strict requirements of Water Protection Ordinance Section 17- 207.B.2, erosion and
sediment control plans for projects of such a large size must be designed to be closed out as soon
as possible. For this reason, subsequent plans cannot assume that the sediment basins constructed
with the mass grading application will remain online. Therefore, each ESC plan must be a
standalone application.
This ESC plan assumes that the mass grading plan has been completed and is stabilized, but still
relies on the sediment basin for ultimate sediment treatment. This ESC plan must be a standalone
plan.
3. Sediment -laden water must not enter the stormsewer system and detention facilities. Inlet
protection is more often than not an inadequate measure because the inlets are constructed well
after initial land disturbance. Even after installation, storm inlets are often bypassed because their
rim elevation is higher than the subbase and gravel around them until the final stage of
construction. Until both portions of the site are nearly complete, much of the water will be
draining to the northeast. It looks as though diversions on the north and east at the limits of
construction for both areas (cinema and the parking lot) can be installed to direct runoff to
sediment basins retrofitted onto structures 43.6 and 48 or 49.
4. Please provide clearer language on the plan that the mass grading plan and the Stonefield Blvd.
Plan is to be completed and stabilized prior to the start of this application. It is important to the
implementation of this plan that these areas are stabilized.
5. For simplification of the design of the ESC plan, I recommend that the ESC plan for the cinema,
parking lot for the cinema, and Stonefield Blvd. are combined into one plan, assuming all projects
can be completed in 9 months.
6. Please do not show the filterras on the erosion and sediment control sheets.
7. Silt fence is needed on the west side of the sanitary sewer line from Sta. 10 +50 to 13 +50 in case
the sediment basin has been removed.
8. Please call out the depth of an adequate sump on inlet 66 on sheet C -19.
9. Construction entrances are likely needed on the west and east sides of Stonefield Blvd. Otherwise,
construction traffic must enter onto the Hydraulic Road to access the two construction areas on this
plan, which is undesirable.
10. Please provide a completed Bond Estimate Request Form to the county engineer to receive an ESC
bond.
C. Stormwater Management Plan Review (no application yet submitted)
1. The set submitted to the county includes ESC and SWM sheets, but no WPO application was
submitted. A review of both plans was performed anyway. Please provide a WPO application and
$600 fee as soon as possible so that this comment letter can be tracked.
2. Please provide an approval letter from Filterra that the current layout is acceptable to them.
3. Every parcel that requires a stormwater management facility must sign a Stormwater Management
Facility Maintenance Agreement with the County. Please complete this form and submit it to Ana
Kilmer with a $17 recordation fee after reading the instructions online. Another agreement may be
required for the master stormwater management plan approved under WPO- 2010 - 00023.
4. Please provide a completed Bond Estimate Request Form to the county to receive an additional
SWM bond.
File: El_ecp swm fsp_PBC _ sdp- 2011 -00047 The Shops at Stonefield -Regal Cinema.doc