20131200 Ver 2_Stormwater Approval_20150410

WDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
April 10, 2015
Mr. Jeff Brown
2659 Sandy Plains Road
Tryon, North Carolina 28782
Mr. Roger Smith, Registered Agent
Tryon Equestrian Partners, LLC
360 Ken Miller Road
Rutherfordton, North Carolina 28139
Subject: STORMWATER MANAGEMENT PLAN
TRYON EQUESTRIAN CENTER
Dear Messrs. Brown and Smith:
Donald R. van der Vaart
Secretary
DWR Project # 13-1200
Polk County
On February 17, 2014, the Division of Water Resources (DWR) issued a 401 Water Quality
Certification to impact 0.49 acre of wetland and 150 linear feet of stream or waters in order to
construct the proposed development in Polk County. In order to meet Condition 6 of the 401
Certification for this project, a stormwater management plan was submitted to the DWR on
October 1, 2014. Because you propose to use a proprietary stormwater management system
known as the "Isolator Row," the DWR has delegated the review of the stormwater management
plan to the NC Division of Energy, Mineral and Land Resources (DEMLR), the agency that handles
reviews of these types of devices.
The first stormwater management plan submittal was received by DEMLR on October 1, 2014. The
deficiencies in that stormwater management plan were communicated to your consultant, Mr.
David Odom, PE, of Odom Engineering, PLLC, on October 20, 2014. On October 27, 2014, DEMLR
received a revised stormwater management plan. DEMLR has determined that the revised
stormwater management plan remains incomplete. On February 1, 2015, DEMLR received a
revised stormwater management plan, dated January 5, 2015.
DEMLR has determined that the revised stormwater management plan meets Condition 6 of the
401 Certification for this project.
. Division of Energy, Mineral, and Land Resources
Energy Section • Geological Survey Section • Land Quality Section
1612 Mail Service Center, Raleigh, North Carolina 27699-1612.919-707-9200 / FAX: [phone]
512 North Salisbury Street, Raleigh, North Carolina 27604 • Internet: http://portal.ncdenr.org/web/Ir/
An Equal Opportunity 1 Affirmative Action Employer - 50% Recycled 110% Post Consumer Paper

Mr. Jeff Brown
April 10, 2015
Page 2 of 3
Conditions of Approval:
1. The SMP approved by DEMLR consists of the following:
Drainage
area
Type of practice
Impervious surface Total drainage area
draining to practice of practice
(square feet) (square feet)
2&3B
Isolator Row
338,897 977,922
3A
Isolator Row
83,200 554.954
4
Isolator Row
138,521 368,953
6
Isolator Row
202,118 642,074
7
Wet Pond/Level Spreader
157,167 506,167
8
Isolator Row
467,399 1,335,114
The stormwater control measures listed above and all associated stormwater conveyances,
inlet and outlet structures, and the grading and drainage patterns depicted on plan sheets
dated October 16, 2014. The plans and specifications approved by DEMLR are
incorporated by reference into this approval and are enforceable by DEMLR and DWR
provided however that any modification of the design for the stormwater management
system that is accepted by DEMLR or DWR shall take precedence over the original plans
and specifications.
2. The maximum allowable drainage and the maximum impervious areas for the stormwater
control measures shall be per the table above. Any changes to these maximum areas shall
require the applicant to submit and receive approval for a revised stormwater
management plan by DEMLR or DWR.
3. The footprint of all stormwater management devices as well as an additional 10 -foot wide
area on all sides of the devices shall be located in public rights-of-way, dedicated common
areas or recorded easement areas. The final plats for the project showing all such rights-
of-way, common areas and easement areas shall be in accordance with the approved
plans.
4. Maintenance activities for the wet pond shall be performed in accordance with the
notarized O&M agreements signed by Mr. Jeff Brown on January 5, 2015. Maintenance
activities for the Isolator Row systems shall be performed in accordance with the notarized
O&M agreements signed by Mr. Jeff Brown on October 15, 2014. The O&M agreements
shall transfer with the sale of the land or transfer of ownership/responsibility for the BMP
facility. DWR shall be notified promptly of every transfer.
5. The applicant and/or authorized agent shall provide a completed Certificate of Completion
form to the DWR within thirty (30) days of project completion (available at
http://Portal.ncdenr.org/web/wq/swp/ws/401/certs and permits/apply/forms).

Mr. Jeff Brown
April 10, 2015
Page 3 of 3
ank you for your attention to this matter. If you have any questions or wish to discuss these
mdtters further, please do not hesitate to contact me at [phone].
Sincerely,
Annette M. Lucas, PE
Environmental Engineer
AML/aml
cc: USACE Asheville Regulatory Field Office
Mr. David Odom, PE, Odom Engineering, PLCC (via email)
Mr. Kelly Hefner, PE, Advanced Drainage Systems, Inc. (via email)
Dr. Bill Hunt, PE, PhD, NCSU-BAE (via email)
Mr. Andrew Anderson, EI, NCSU-BAE (via email)
Mr. Ken Pickle, PE, DEMLR (via email)
Mr. Boyd DeVane (via email)
401 & Buffer Permitting Unit file, DWR
ARO 401 file (via email)
Filename: 232200TryonHorseFarm(Polk) Approve SW.docx