HomeMy WebLinkAboutWPO201700023 Review Comments WPO VSMP 2019-05-15COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
VSMP /WPO Plan Amendment Review
Project title:
Oakleigh — VSMP /WPO ESC & SWM Plan Amendment #2
Project file number:
WP0201700023
Plan preparer:
Steve Edwards[steve(a)edwardsdesijznstudio.com]
4936 Old Boonesboro Road, Lynchburg VA 24503
Alan Franklin, P.E., LLC [alan a,alanfranklinpe.com]
427 Cranberry Lane, Crozet VA 22932
Owner or rep.:
Oakleigh Albemarle LLC — 690 Berkmar Circle / Charlottesville, VA 22901
Plan received date:
6 Feb 2019
(Rev. 1)
18 Apr 2019
Date of comments:
15 Mar 2019
(Rev. 1)
15 May 2019 — Approved pending one revision
Reviewer:
John Anderson
WP0201700023 —Amendment #2 — All comments Addressed 61rayscale, below), with a single follow-up item
at #18. Also, please see email sent to Applicant 5/14/2019 12:15 PM
Sheet 1
1. List parcel information (owners, TMP #s).
2. Amendment #2 should include all index sheets. Amendment #2 will replace prior approved versions of the
VSMP /WPO Plan, and needs to serve as a standalone reference and inspection document.
3. List dates of initial WPO Plan and Amendment 1 approvals (5/31/17, 3/26/18, respectively).
4. Note: ensure sheet 2 TMP #s for site and adjacent properties match county GIS real estate records.
Multiple current parcel boundary lines may not be shown on sheet 2.
5. Include Construction Record Drawing (As -built) for VSMP policy on plans; link:
httD://www.albemarle.ore/uDload/imaL,es/forms center/departments/Community Development/forms/Eniii
neerine and WPO Forms/WPO VSMP Construction Record Drawines Policv 23Mav2014.Ddf
Sheet 11
6. Show full extent of storm pipe outfall at west corner of site, unless shown, elsewhere. Storm pipe outfall,
end section, and ESC riprap must be shown.
7. Delete `Stormwater Quality Unit TBD.' It appears that a design has been selected.
8. All sheets: Label all storm drain pipes and structures so plan sheets may be cross-referenced.
9. Sheet 12: List and label permeable paver area (ft2) of each distinct section of permeable paver.
Sheet 13
10. Show permeable pavement above 60" CMP pipe stormwater detention unit, in profile
11. Provide maintenance and inspection schedules for Contech Stormfilter® on plans.
12. Confirm 60" CMP pipe stormwater detention unit profile provides adequate cover along the entire length,
per Mfr. recommendations.
Engineering Review Comments
Page 2 of 2
13. Label 60" detention system bedding; provide bedding detail.
14. Provide storm pipe culvert bedding detail.
Sheet 14
15. Provide dimensions (L X W) for bio-retention basin in plan view.
16. Provide L X W dimensions for R-tank. Routing packet, p. 23 lists 9,658 cf R-tank Vol. Provide dimension
labels that correlate routings and plan. (Rev. 1) Addressed. Applicant response: `Note added to R-tank
layout to provide minimum of 9,658 cf volume of storage. That system is modular so I did not tie the
contractor down with exact dimensions but instead noted that the layout could vary to provide the
minimum volume that correlates to the calculations.' Engineering accepts this approach.
17. Provide installation, maintenance and inspection information for R-tank. (Rev. 1) Addressed. Applicant
response: `Note was added to that R-tank to be installed per manufacturer specifications with manufacturer
representative oversight. Maintenance and inspection documentation for R-tank added to additional sheets
at the end of the plan set.' Engineering accepts this approach.
18. Confirm permeable interlocking pavers and permeable asphalt are equivalent from a water quality
perspective. Provide installation, maintenance, and inspection notes for both types, as has been provided
for bio-retention. Ref. BMP Clearinghouse design specification Practice 7; link:
http://www.swbmp.vwrrc.vt.edu/"-content/uploads/2017/i l/BMP-Spec-No-7 PERMEABLE -PAVEMENT v1-
8 03012011.pdf (Copy relevant installation, maintenance, and inspection guidelines to plans) (Rev. 1)
Addressed. Applicant response: `I believe we covered this in our meeting with you and previous meeting
with Frank Pohl. I've attached a copy of the relevant regulations that apply to this project confirming
permeable asphalt as acceptable for your records.' Asefollow-up: Per conversation with S. Edwards on
5/14/19, please add Note at sheet 15, Detail D15 (Permeable Asphalt —Alternative to PCIP), that reads:
"Reference Virginia Stormwater Management Handbook, First Edition, 1999, Vol. I, Min. Std. 3.10D,
Porous Pavement for design, installation, inspection, and maintenance requirements."
19. Show permeable paver underdrains in plan view. Show where permeable paver underdrain connect with
storm system.
20. Update SWPPP with revised plan sheets (2 sets of 11" X 17" SWPPP inserts, for any plan sheet included
with SWPPP, revised with Amendment #2).
21. Cross-reference these comments with Engineering site plan amendment review comments d. 7 Feb 2019.
Attached.
Process
Initial Plan (WP0201700023) is bonded. Current bonds amounts are adequate for proposed townhouse to
apartment change proposed with Amendment 2. Change has a negligible effect on WPO bond amounts.
VAR107174 covers construction activities permitted with WP0201700023. No modification to
VAR107174 is required with VSMP /WPO Amendment 2.
A pre -construction conference is not required since project is under construction.
As discussed with S. Edwards on 5/14, once VSMP /WPO plan is revised (1 change), 4 print copies of plan
and 2 SWPPP inserts (ESC /SWM Plans, I I" X 17") may be left with CDD, Front Desk, at Applicant's
convenience. Please include transmittal to my attention stating: `Not for review, for stamped approval.'
Engineering will stamp Approved and notify Applicant when contractor copies (2) are available for pickup.
Amendment 2 should be on -site as soon as possible. 2 copies remain with Albemarle County (file copy
/ESC Inspector copy).
Please feel free to call if any questions. Thank you
J. Anderson 434.296-5832 -0069
WP0201700023 Oakleigh VSMP Amendment -2 051519rev1