HomeMy WebLinkAbout20201699 Ver 1_Stormwater Approval_20210617Buncombe County Planning and Development
Nathan Pennington, CFM
anning Director
BUNCOMBE
COUNTY
GOVERNMENT
-NORTH CAROLINA-
LETTER OF APPROVAL
WITH MODIFICATIONS AND/OR PERFORMANCE RESERVATIONS
June 17, 2021
WI Indian Branch, LLC
Rick Wrenn
75 Giles Place
Waynesville, NC 28786
Dear Mr. Wrenn:
NOTICE — This is not a permit
This office has reviewed the Stormwater Plan submitted for the project listed below. We find the
plan to be acceptable with the attached modifications and/or performance reservations and hereby
issue this Letter of Approval.
The Buncombe County Stormwater Management Ordinance is a performance oriented program
requiring protection of the natural resources and adjoining properties. If, following commencement
of this project, it is determined that the plan is inadequate, this office may require revisions to the
plan and its implementation.
The approval of a stormwater plan is conditioned on the applicant's compliance with federal and state
water quality laws, regulations, and rules. All other applicable county permits and reviews must be
completed prior to issuance of the stormwater permit and the beginning any land disturbing activity.
The approval of the stormwater permit shall require an enforceable restriction on property usage
that runs with the land, such as recorded deed restrictions or protective covenants, to ensure that
future development and redevelopment maintains the site consistent with the approved project
plans.
You must acquire a stormwater permit from this office. Submit a surety performance bond as
described in Division 5 Section 26-382 of the Stormwater Management Ordinance and a permit
will be issued. The required surety amount for this project will be approved when a revised
bond cost estimate is provided.
This letter gives the notice required by Chapter 26, Environment, Article VII, Division 2,
Section 26-322, (j)(1) of our right of periodic inspection to insure compliance with the approved
plan.
46 ValIey Street - Asheville, NC 28801
p. 828.250.4830 ,f.828.250.6086
didt
bumom becounty.org
Rick Wrenn
Page 2 of 3
This approval shall become null and void if you have not made progress on the site within six
months after the date of approval. A six month extension can be granted for good cause shown
upon receiving a written request from you before the expiration of the approved plan.
We look forward to working with you on this project.
Sincerely,
LtAtd opd
Victoria Hoyland, PE
Stormwater Administrator
Cc: Land Planning Studios
Buncombe County Erosion Control
encl.
MODIFICATIONS AND/OR PERFORMANCE RESERVATIONS
FOR APPROVAL
Project name: Kirkwood MHP
Project No.: STW2021-00020
Location: 62 Old US Highway 19/23
Date received: June 4, 2021
Disapproval date: June 17, 2021
Person financially responsible: Richard Wrenn, Jr.
Required Modifications:
1. Please provide an elevation for the 1/2" holes in the Pond C outlet structure.
2. Please show the final configuration of Pipe D2 on Sheet L5, as this will be the sheet that is
referenced for the final stormwater inspection.
3. Please add a callout that side slopes of Pond C shall be 3:1 or flatter.
4. Please provide documentation of NCDOT approval for the proposed stormwater
infrastructure in NCDOT ROW at both the north and south ends of the project.
5. Please provide documentation of easements or landowner authorization forms for the work
proposed on PIN 960713422200000 and 960712144000000.
6. Please provide documentation of the 401 permit for this project for the proposed wetland
impacts.
Performance Reservations
1. Per Infiltration System MDC 1, please provide a site -specific soil investigation to determine
the infiltration rate at the proposed location and elevation of Ponds A and B. Please see
Section A-2 of the NC Stormwater Design Manual for approved methods. Please note that
46 Valley Street - Asheville, NC 28801
p. 828.250.4830 f. 828.250.6086
buncombecounty.org
Rick Wrenn
Page 2 of 3
percolation test methods are not approved methods. Please also use this infiltration rate in the
hydrographs for Ponds A and B. This must be provided prior to permit closeout.
2. Per Infiltration system MDC 2, Please provide NRCS soil survey depth to water table data for
the locations of the ponds. If it is less than >200 cm, please provide calculations using the
shallowest water table depth provided to demonstrate that at least 2' of separation from the
seasonal high water table will be provided. Alternatively, results from an on -site soil
investigation can be provided to demonstrate this. If less than 2' is provided, there are
additional measure in the NC Stormwater Design Manual that can be provided to allow 1' of
separation. This must be provided prior to permit closeout.
46 Valley Street - Asheville, NC 28801
p. 828.250.4830 f. 828.250.6086
411t
buncombecounty.org