HomeMy WebLinkAboutWPO201500086 Review Comments Minor Amendment 2015-11-11COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
VSMP Permit plan review
Project title: Belvedere Phase IIA, LLC — Minor Amendment
Project file number: WP0201500086
Plan preparer: Collins Engineering [scott@collins-engineering.com]
Owner or rep.: Robert Hauser
Date of comments: 11 November 2015
Scott,
We have reviewed the amendment and the SWPPP and have the following comments:
Stormwater Pollution Prevention Plan
1. On the registration statement, the handwritten acreages should be initialed by Michael Ball.
2. In Section 6 on part E, include the name of the persons responsible for pollution prevention
practices.
3. The SWPPP Exhibit plan sheet at the end of Section 6 shows the previous staging area and
stockpile location and should be updated.
4. Section 8 should include the names of who will be conducting the inspections.
5. In Section 12 on the inspection frequency box, DEQ has requested that one of the frequencies be
chosen and followed for the project.
Erosion and Sediment Control Plan
1. On sheet 2, under Erosion Control Notes, revise note 19 to reflect the inspection frequency chosen
in the SWPPP.
2. The Silt Fence Drop Inlet Protection detail on sheet 2 should be removed. Staff has observed that
this type of IP has not performed well on the site. Plates 3.07-3, 4, or 6 would all be acceptable
replacements.
3. The concrete wash-out is shown at the beginning of a diversion in an area that sees a lot of runoff
and should be relocated to the staging area.
4. Blanket matting should be shown on the steep slopes located at the top of the site north of the
circle, around SB 1A, and on Lot 196.
5. Show the two lagoons and the storage area above S132 and if they are to be cleaned/removed.
6. Show stabilization on the basins.
7. If the diversion on the northwest side of S132 is to remain, it should be shown on the plan.
8. If wall construction around SBIA has been completed, the revised layout and grading should be
shown.
9. The spillway has been installed on SBIA and should be shown on the plan.
10. The spillway has already had issues with erosion and should either be lined or relocated off of the
fill.
Engineering Review Comments
Page 2 of 2
11. The diversions below lots 191-195 and on lot 196 are receiving enough runoff that they should be
replaced with a lined SCC.
12. The gabion dam in the retention basin should be placed on a foundation/keyed into the soil to
prevent undermining.
13. Revise the forebay spillway detail on sheet 5 to show the use of gabion baskets.
14. The details on sheet 5 should be drawn to scale to prevent confusion in the construction and
inspection process.
15. Provide computations for SB 1A and revise the dewatering orifice per plate 3.14-15 in the ESC
Handbook. Note that the sediment cleanout elevation should be clearly marked on the riser.
Engineering plan review staff are available from 2-4 PM on Thursdays, should you require a meeting to
discuss this review.
If you have any questions or concerns, please contact me either by email (mwentland@albemarle.org) or
by phone at 434-296-5832 ext. 3458.
Sincerely,
Matt Wentland, P.E.
Civil Engineer H
File: E1_vsmp_review_projectname.doc