HomeMy WebLinkAboutWPO200900036 Review Comments Erosion Control Plan 2009-10-19� 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:
Plan preparer:
Owner or rep.:
Plan received date:
Rev 1:
Date of comments:
Rev 1:
Reviewer:
Collins Medical Center [SDP200900059, WP0200900036]
Ray Burkholder, P.E. [rurkholder @balzer.com]
JMC ENTERPRISE LLC
28 July 2009
18 September 2009
21 August 2009
19 October 2009
John P. Diez — Current Development - Engineering Technician
A. Final site plan (SDP200900059)
1. All proposed slopes must be 2:1 or flatter. [Policy]
(Rev. 1) Comment has been addressed.
2. VDOT approval must be obtained prior to final site plan approval.
(Rev. 1) Comment has been addressed.
3. Please provide a typical retaining wall detail. A typical manufacturer's drawing for segmented
block walls, or VDOT reference, is acceptable.
(Rev. 1) Comment has been addressed.
4. Please update the Albemarle County General Construction Notes, refer to the Design Standards
Manual.
(Rev. 1) Comment has been addressed.
5. Please show all utility crossings on the profiles.
(Rev. 1) Comment has been addressed.
6. Please provide VDOT designations (MH -1, DI -313, etc.) for each structure.
(Rev. 1) Comment has been addressed.
7. Pipe slopes must be at .5% min. to 16% max. (per VDOT standards, anchors are required for pipes
over 16 %)
(Rev. 1) Comment has been addressed.
8. Concrete inlet shaping (IS -1) should be specified on any structure with a 4' or greater drop
(ie- Structure #4).
(Rev. 1) Based on further engineering review, please disregard comment.
9. Please provide end sections (ES -1) or endwalls (EW -1)on all pipe outlets.
'Rev. 1) Comment has been addressed.
B. Erosion Control Plan (WP0200900036)
10. Please provide Albemarle County erosion control notes. Please refer to the Design Standards
Manual.
(Rev. 1) Comment has been addressed.
11. Please label the stockpile and staging area in the E &S plans.
(Rev. 1) Comment has been addressed.
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.
(Rev. 1) Comment has been addressed.
Engineering Review Comments
Page 2 of 2
13. The stone weir outlet for the sediment trap must be 6' wide per acre.
(Rev. 1) Comment has been addressed.
C. Stormwater Management Plan (WPO200900036)
14. Please provide Albemarle County general stormwater notes, refer to the Design Standards Manual.
(Rev. 1) Based on further engineering review, please disregard comment.
15. Albemarle County cannot approve facilities by brand name. Please state "brand name or equal to
VDOT approved inlets"
(Rev. 1) Comment has been addressed.
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.
(Rev. 1) Comment has been addressed.
17. Please provide storm drain design computations with flow velocities.
(Rev. 1) Comment has been addressed.
18. Please analyze and address MS -19 for the outlet for the existing pipe.
(Rev. 1) Comment has been addressed. Existing pipe information has been gathered from the
following County plans:
SDP1982 -29 (Daley's Rent -All) — Approved 8 -24 -82
SDP1984 -18 (Dogwood Landscaping) — Withdrawn 4 -17 -84
File 2311 (ALB Nursing & Rehab Center) — Approved Nov. 2003
The Erosion & Sediment Control and Stormwater Management Plans (WPO200900036) submitted 18
September 2009 have received Engineering Review and meet Albemarle County minimum checklist
items for approval. Please submit 5 paper copies of the Plan to Current Development Engineering.
The E &SC bond amount is $11,900.00. The SWM bond amount is $33,300.00. The forms
and instructions to post the Water Protection Ordinance Bond can be found on the Community
Development Department Web site on www.albemarle.org.
A completed copy of the Standard Stormwater Maintenance Agreement and fee for recordation for
the stormwater facilities is required prior to final approval. [17-304E] The forms and instructions
can be found on the Community Development Department Web site on www.albemarle.org.
You may contact Ana Kilmer (Albemarle County Department of Community Development) at ext.
3246 for further information on bonding procedures and Maintenance Agreements.
Once the E &SC bond and the SWM bond have been posted, you may contact the Department of
Community Development to arrange a pre - construction meeting with a County Erosion &
Sediment Control Inspector. Should the County Inspector find the limits of disturbance increased
or the need for additional control measures required to protect the site, additional fees will be
required.
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