HomeMy WebLinkAboutWPO200900036 Review Comments Erosion Control Plan 2009-08-21� OF AL
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project: Collins Medical Center [SDP200900059, WP0200900036]
Plan preparer: Ray Burkholder, P.E. [rurkholder @balzer.com]
Owner or rep.: JMC ENTERPRISE LLC
Plan received date: 28 July 2009
Date of comments: 21 August 2009
Reviewer: John P. Diez — Current Development - Engineering Technician
A. Final site plan (SDP200900059)
1. All proposed slopes must be 2:1 or flatter. [Policy]
2. VDOT approval must be obtained prior to final site plan approval.
3. Please provide a typical retaining wall detail. A typical manufacturer's drawing for segmented
block walls, or VDOT reference, is acceptable.
4. Please update the Albemarle County General Construction Notes, refer to the Design Standards
Manual.
5. Please show all utility crossings on the profiles.
6. Please provide VDOT designations (MH -1, DI -3B, etc.) for each structure.
7. Pipe slopes must be at .5% min. to 16% max. (per VDOT standards, anchors are required for pipes
over 16 %)
8. Concrete inlet shaping (IS -1) should be specified on any structure with a 4' or greater drop
(ie- Structure #4).
9. Please provide end sections (ES -1) or endwalls (EW -1)on all pipe outlets.
B. Erosion Control Plan (WP0200900036)
10. Please provide Albemarle County erosion control notes. Please refer to the Design Standards
Manual.
11. Please label the stockpile and staging area in the E &S plans.
12. Please extend the diversion dike of the side of the site to the starting point of the existing ditch.
Please include riprap at the end of the diversion dike to minimize potential erosion.
13. The stone weir outlet for the sediment trap must be 6' wide per acre.
C. Stormwater Management Plan (WP0200900036)
14. Please provide Albemarle County general stormwater notes, refer to the Design Standards Manual.
15. Albemarle County cannot approve facilities by brand name. Please state "brand name or equal to
VDOT approved inlets"
16. Please provide an existing condition drainage map for site areas draining to proposed stormwater
facilities. Please include acreage of drainage area, coefficient used, and time of concentration.
17. Please provide storm drain design computations with flow velocities.
18. Please analyze and address MS -19 for the outlet for the existing pipe.
Engineering Review Comments
Page 2 of 2
Once these comments have been addressed, please submit two (2) copies of the revised plans, calculations,
and narratives to Current Development Engineering.
Current Development Engineering is available from 2:30pm — 4:00pm on Thursdays to discuss these
review comments. Please contact Amy Pflaum at 434 - 296 -5832 or apflaum @albemarle.org to schedule an
appointment.
If you have any questions, you can reach me, John Diez, at (434) 296 -5832 ext. 3025, or my email:
jdiez@albemarle.org.
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