HomeMy WebLinkAboutWPO201600031 Review Comments WPO VSMP 2019-12-06COUNTY 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 Amendment Review
Project title:
Whittington-Ph.B - VSMP — Amendment 2
Project file number:
WP02016-00031
Plan preparer:
Dustin Greene, EIT—Roudabush, Gale & Associates [dareene(abroudabush.com]
172 S. Pantops Drive, Charlottesville, VA 22911
Owner or rep.:
Jeremy Swink, Stanley Martin Homes — 404 People Place, Suite 303
Charlottesville, VA 22911 (swinkjw a,stanleymartin.com )
Plan received date:
26 Jul 2019
(Rev. 1)
5 Nov 2019
Date of comments:
29 Aug 2019
(Rev. 1)
6 Dec 2019
Reviewer:
J. Anderson
A. Stormwater Pollution Prevention Plan (SWPPP) — Update SWPPP
B. Stormwater Management Plan (SWMP)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a SWMP. This
plan is disapproved for reasons listed below.
1. Amendment appears to propose eliminating SWM9 and SWM10. Confirm that this is the case. (Rev. 1)
Addressed.
2. If so, please confirm proposed Amendment increases total phosphorous load from 19.73 to 19.91 lb., and
provide rationale, both for Amendment request (which appears unrelated to development area
classification), and statutory basis to approve; that is, consider, outline and support path to approval for
Amendment request to eliminate approved SWM facilities. (Engineering sees no rationale at the moment.)
(Rev. 1) Addressed. Asefollow-up: provide photo image on plans showing — 20,000 SF of woods on Lots
70 and 71 that will be preserved by not constructing SWM9 and SWM10. Feel free to use images, below,
which approximate locations of SWM9 / SWM10.
Engineering Review Comments
Page 2 of 4
IM
Engineering Review Comments
Page 3 of 4
3. Provide calculations, VaRRM.xls, etc. that are basis of phosphorus load values on sheet 2. Do not simply
reference WP0201600031. Engineering requests a complete submittal with details sufficient to outline
proposed Amendment. Engineering cannot `fill in the blanks,' or guess at design intent, or commit time to
research request to eliminate SWM9 and SWM10. No narrative is provided to support this Amendment
request (no letter, no title sheet narrative —there are significant gaps with Amendment 2 request). (Rev. 1)
Addressed.
4. Provide Narrative explaining /supporting:
a. Eliminating approved SWM facilities.
b. Elimination in context of calculations.
c. Elimination in context of code /VAC.
d. Include Narrative for Amendment 2 similar to 4-20-16 Sheet 1 Narrative for Amendment 1. (Rev.
1) Partially addressed. Asfollow-up: Cloud revision, 1111119 VSMP Amendment Narrative Yd
sentence (sheet 1) reads: `The biofilters were not used for water quantity in order to satisfy channel
and flood protection.' Furnish graphic (plan sheet) and additional narrative to tie Amendment 2 to
approved Amendment 1 to illustrate `No effect' on post -developed approved runoff release rates;
specifically, provide: Amendment 1 design event velocity /volume runoff rates; rates if SWM9 and
SWM10 are replaced with 1.000 Ac. Forest /Open Space Easement (assume rates identical); and
corresponding graphic plan information that makes the point. Reprint /include sheets as needed
from WP0201600031 (or Amendment 1) to demonstrate no e ect on water quantity.
5. Clarify plan set, beginning with title. At first glance, reviewer and other staff mistook plan as initial
Amendment. It is not. Sheet 1 Amendment Note for Amendment approved 7/7/16 should figure less
prominently. Revise plan title to `Amendment 2 for Erosion & Sediment Control and Stormwater
Management Plan for Whittington Subdivision -Phase B, WP0201600031. Approved Amendment 1 (9-
sheet plan set; much more detail) is available at:
https:Hlfweb.albemarle. org/weblink/search.aspx?dbid=3 &searchcommand=%7b%5bCDD-
Planning%5d:%5bApplicationNumber%5d=%22WPO201600031%22%7d (Rev. 1) Not Addressed.
Image below is Sheet 1 of 9-p. Amendment approved 7/7/16. Please revise current submittal plan title to
ref. Amendment 2 (see initial review comment; please call if questions).
AMENDMENT FOR EROSION & SEDIMENT CONTROL AND STORMWATER
MANAGEMENT PLAN
WHITTINGTON SUBDIVISION - PHASE B
TM 90 PARCEL 3
SAMUEL MILLER DISTRICT, ALBEMARLE COUNTY, VIRGINIA
6. Include with Amendment 2 approved design data for SWM9 and SWM10. (Rev. 1) Addressed.
7. Include revised post -developed grades, if approved SWM facilities are eliminated. (Rev. 1) Withdrawn.
8. If review comments miss the mark, recommend meeting 16-Sep, 2PM. Reviewer is out of office thru 16-
Sep, and welcomes meeting to discuss Amendment 2 at earliest convenience. (Rev. 1) Note: Applicant and
County met to discuss.
New:
9. Sheet 3 of Amendment (39 of WP0201600031): Show 1.000 Ac. Forest /Open Space Easement on this
sheet. Label easement.
10. Provide 1" =50' (or similar) plan view of SWM9 and SWM10. Since these SWM Facilities are proposed to
be removed, it is important to show approved design with the amendment that removes them. Details of
these best management practices are indiscernible at 1" =200' scale (sheet 39).
11. Pending Forest /Open Space Easement Plat submittal: Include ties to two (2) permanent monuments.
Additional Easement Plat review comments are possible.
C. Erosion and Sediment Control Plan (ESOP) — NA
D. Pollution Prevention Plan (PPP) — NA
The VSMP permit application and plans may be resubmitted for approval when all comments have been addressed.
For re -submittals please provide 2 copies of the complete permit package with a completed application form.
Engineering Review Comments
Page 4 of 4
Engineering plan review staff arc available from 2-4 PM on Thursdays, should you rcquirc a mccting to discuss this
review.
Process:
Prior to Amendment 2 approval, (SWM) Forest /Open Space Easement Plat must be approved /recorded. Please see
email sent to Applicant, 12/6/2019 3:43 PM.
A Maintenance Agreement is required for Forest /Open Space Easements. Contact Ana Kilmer at 434.296-5832 -
x3246 to request Maintenance Agreement for WP0201600031, Amendment 2.
Note: DEQ VPDES VAR 10 permit forms may be required since permitted facilities will not be constructed with this
Amendment. WPO Plan bond is not required. Applicant may request SWM Plan bond reduction since SWM9 and
SWM10 will not be constructed, a reduction corresponding with SWM Plan bond expense assigned to these 2
facilities (once Amendment 2 is approved).
County forms can be found on the county website forms center under engineering;
htW://www.albemarle.org/dgptfonns.asp?departinent--cdengUo
WP0201600031 Whittington Ph-B, VSMP Amend2 120619rev1