HomeMy WebLinkAboutWPO202000055 Review Comments WPO VSMP 2020-12-30COUNTY 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:
White Gables
Project file number:
WP0202000053
Plan preparer:
Collins Engineering [scott@collins-engineering.com]
Owner or rep.:
Robinson Development Group Inc.
Plan received date:
07 Dec. 2020
Date of comments:
31 Dec 2020
Reviewers:
Emily Cox
County Code section 17-410 and Virginia Code §62.1-44.15:34 requires the VSMP authority to
act on any VSMP permit by issuing a project approval or denial. This project is denied. The
rationale is given in the comments below. The application may be resubmitted for approval if all
of the items below are satisfactorily addressed. The VSMP application content requirements can
be found in County Code section 17-401.
A. Stormwater Pollution Prevention Plan (SWPPP)
The SWPPP content requirements can be found in County Code section 17-405. A SWPPP must
contain (1) a PPP, (2) an ESOP, (3) a SWMP, and (4) any TMDL measures necessary.
1. Please provide a SWPPP.
B. Pollution Prevention Plan (PPP)
The PPP content requirements can be found in County Code section 17-404.
1. Please provide a PPP.
C. Stormwater Management Plan (SWMP)
VSMP Regulation 9VAC25-870-108 requires the VSMP authority to approve or disapprove a
SWMP. This plan is disapproved, and the reasons are provided in the comments below. The
stormwater management plan content requirements can be found in County Code section 17-403.
1. SWM maintenance agreement must be executed before plan can be approved. Please contact Ana
Kilmer to begin this process (akilmer@albemarle.org or 434-296-5832 x3246).
2. Nutrient credits must be purchased before plan can be approved. Please contact Ana Kilmer to
begin this process (akilmergalbemarle.org or 434-296-5832 x3246).
3. This plan is WP0202000055. Please update the cover sheet.
4. [Cover sheet] There is a SWM note that says to see VSMP plan for more details. Please remove
as this is the VSMP Plan.
5. Provide a detailed grading sheet which includes more proposed contour labels, spot shots and
tops and bottoms of retaining wall.
Engineering Review Comments
Page 2 of 3
6. Please include this checklist on the plans:
https://www.albemarle.orWHome/ShowDocument?id=3381
7. Please provide a cross section for dry swale A as well as a detail for the riser structure. Be sure to
show relevant water surface elevations.
8. Please provide a profile for the outfall pipe from detention basin B and a detail of the riser
structure showing relevant water surface elevations.
9. The outfall of detention basin B must go to a channel. Per 9VAC25-870-66, Concentrated
stormwater flow shall be released into a stormwater conveyance system. Manmade channel was
used in the calculations, however, there does not appear to be any manmade channel at the outfall
location.
10. Provide maintenance requirements for Dry Swale A.
11. Please clarify the areas used in the VRRM spreadsheet. The total is 2.26 acres, but the disturbed
area is 1.98. Also, the drainage areas on sheet 9 do not add up to 2.26 or 1.98.
12. [Sheet 71 The dry swale insert references outlet protection calculations on this sheet, however,
they are not evident on that sheet.
D. Erosion and Sediment Control Plan (ESCP)
Virginia Code §62.1-44.15:55 requires the VESCP authority to approve or disapprove an ESCP.
This plan is disapproved, and the reasons are provided in the comments below. The erosion
control plan content requirements can be found in County Code section 17-402.
1. [Sheet 71 Ensure the anti -vortex plate is checked on the trash rack detail.
2. [Sheet 5 ]Is this treeline to be protected? If so, the limits of construction should not be outside of
3. Is this area not to be disturbed?
limits of construction should be moved:
PROPOSEDSAFEI
AROUNDSEDIME
4. The construction entrance should be located at the entrance to the work and it must have a wash
rack.
5. Is this a balanced site? If not, please put the amount of cuttfill on the cover sheet and provide a
stockpile location.
6. Where is the Phase IV design for ST#3? The drainage area appears to be larger than Phase III.
7. [Sheet 31 Please address the installation of the dry swale and detention basin from sediment traps
to stormwater facilities in the sequence of construction.
8. Ensure the bottoms of dry swale A and detention basin B are lower than the respective sediment
traps.
Engineering Review Comments
Page 3 of 3
The VSMP permit application and all plans may be resubmitted for approval when all comments have
been satisfactorily addressed. For re -submittals please provide 2 copies of the complete permit package
with a completed application form.
Engineering plan review staff are available from 2-4 PM on Thursdays, should you require a meeting to
discuss this review.
Process:
After approval, plans will need to be bonded. The bonding process is begun by submitting a bond
estimate request form and fee to the Department of Community Development. One of the plan reviewers
will prepare estimates and check parcel and easement information based on the approved plans. The
County's Management Analyst will prepare bond agreement forms, which will need to be completed by
the owner and submitted along with cash, certificates or sureties for the amounts specified. The
agreements will need to be approved and signed by the County Attorney and County Engineer. This may
take 2-4 weeks to obtain all the correct signatures and forms.
Stormwater Management Facilities Maintenance agreements will also need to be completed and recorded
The County's Management Analyst or other staff will prepare the forms and check for ownership and
signature information. The completed forms will need to be submitted along with court recording fees.
After bonding and agreements are complete, county staff will need to enter project information in a DEQ
database for state application processing. DEQ will review the application information based on local
VSMP authority approval. At this time, the DEQ portion of the application fees will need to be paid
directly to the state. For fastest processing, this is done electronically with the emalls provided on the
application. DEQ should notify applicants with instructions on how to pay fees. When DEQ approves
the application, they will issue a permit coverage letter. This should be copied to the county.
After DEQ coverage is issued, via the coverage letter, the County can hold a pre -construction conference.
Applicants will need to complete the request for a pre -construction conference form, and pay the
remainder of the application fee. The form identifies the contractor and responsible land disturber, and
the fee remaining to be paid. This will be checked by county staff, and upon approval, a pre -construction
conference will be scheduled with the County inspector. At the pre -construction conference, should
everything proceed satisfactorily, a joint VSMP and grading permit will be issued by the County so that
work may begin.
County forms can be found on the county website forms center under engineering;
btip://www.albemarle.org/deptforms.asp?department�dengMo