19. NCS000465_Wake County NOV and Civil Penalty Assessment_20210310

7 07---
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WAKEWake County Sediment and Erosion Control Section, Water Quality Division
COUNTY 336 Fayetteville Street - PO Box 550 - Raleigh, NC 27602
NOR-'-" `AR01'"" Phone: [phone]; Fax: [phone]
July 2, 2020
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
FIRST CLASS MAIL
Attn: Marc Chadwick
Ashton Raleigh Residential, LLC
5711 Six Forks Rd, Suite 300
Raleigh, Nort Carolina 27609
Re: Notice of Violation and Civil Penaltv Assessment
Project Name and Land Disturbance Permit # or Property Address/PIN: Mason Farm Estates
S006134
Dear Mr. Chadwick:
On June 19, 2020, a duly authorized representative of the Water Quality Division of the
Wake County Department of Environmental Services inspected the subject project/property
and determined that there are violations of the Wake County Unified Development Ordinance
(UDO) Article 10 and the Sedimentation Pollution Control Act of 1973, N.C. General Statute
113A-50 et seq. See the attached report.
VIOLATIONS:
The following actions are violations of Article 10 of the Wake County Unified Development
Ordinance (UDO) and subject to the related enforcement and penalty provisions:
1. Failure to follow approved plan:
• 10-40-2 to conduct a land -disturbing activity except in accordance with provisions of
an approved plan.
Findings: : Silt fences and outlets were not repaired and maintained as per the approved plan.

Page 2 of 6
2. Failure to protect against off -site sedimentation:
• 10-40-3 to fail to protect against off -site sedimentation damage when conducting
any land -disturbing activity.
Findings: Sediment loss was observed downslope from skimmer Basin of 2"-12"into
riparian buffer.
3. Failure to maintain erosion control measures:
• 10-23-1 During the development of a site, the person conducting the land -disturbing
activity must install, routinely inspect and maintain in good working order all
temporary and permanent erosion and sedimentation control measures as required
by the approved plan or any provision of this article, the North Carolina
Sedimentation Pollution Control Act, or any order adopted pursuant to the erosion
and sedimentation control regulations of this article or the North Carolina
Sedimentation Pollution Control Act.
• 10-23-2 After site development, the property owner or person in possession or
control of the land must install and/or maintain all necessary permanent erosion and
sediment control measures, except those measures installed within a road or street
right-of-way or easement accepted for maintenance by a governmental agency.
• 10-23-3 Whenever the County determines that significant erosion and
sedimentation is occurring as a result of land -disturbing activity, despite application
and maintenance of protective practices, the person conducting the land -disturbing
activity will be required to and shall take additional protective action.
• 10-23-4 All streets, sidewalks, greenways or other travel ways must be kept free
from mud, dirt, dust or other material that may create a hazard to public safety or
cause the travel way to be unreasonably muddy, as determined by the County.
Findings: Silt fence and silt fence outlet at outlet of skimmer Basin 1 were not
maintained. Mnay inlet protection were not repaired and maintained.
4. Failure to provide adequate ground cover:
10-20-5(B)(5) All uncovered areas that result from land disturbing activities, and are
subject to continued and accelerated erosion, and are causing the movement of
sediment offsite from the tract, must be provided with a ground cover or other
protective measures, structures or devices sufficient to restrain accelerated erosion
and control off -site sedimentation.
• NCG01 NPDES Stormwater Discharge Permit for Construction Activities
Findings: Adequate ground cover to restrain erosion was not provided for basin side slopes, and
other bare areas.

Page 3 of 6
The County may require a person who engaged in a land -disturbing activity and failed to retain
sediment generated by the activity, as required by this article and G.S. 113A-57 (3), to restore
the affected waters and land to minimize the detrimental effects of the resulting pollution by
sedimentation. This authority is in addition to any other civil or criminal penalty or injunctive
relief authorized under this ordinance, Article 10-48. All stream or buffer restoration efforts in
the Neuse Basin should be coordinated with NC Department of Environmental Quality - Division
of Water Resources.
Civil Penalty Assessment
Due to the nature and severity of the violation(s), there is a one-time, first day civil penalty
assessed in the amount of $5,000. This total is based on the criteria listed under 10-42-2 Civil
Penalty Assessment Factors in the UDO. Failure to bring the project into compliance within the
time specified is subject to additional civil and criminal penalties for continuing a violation
under the UDO Article 10-41-2. Please be advised that any further land -disturbance or
construction activity should not take place until you are compliant with these Articles.
READ CAREFULLY:
To bring the project back into compliance, the following must be accomplished within 7
days of your receipt of this notification:
1) Hand remove sediment from the buffer as much as possible in affected areas
without doing further damage. Stabilize areas within riparian buffer using
Native Riparian Buffer seed mix and cover with pine straw or leaf litter. The
offsite sediment to the buffer shall be self -reported to NCDEQ-Division of
Water Resources and the Division of Energy Mineral and Land Resources at
[phone].
2) Remove accumulated sediment along the silt fence and outlets downslope of
Basin 1. Repair and maintain silt fence and outlets.
3) Repair inlet protection throughout the site.
4) Repair active erosion on exterior slopes of Basin 1 slopes and stabilize them
with rolled erosion control products. Provide ground cover on other bare and
inactive areas.
5) Provide all self -inspection reports for last four weeks.
To comply with the Civil Penalty requirements, you must do one of the following:
1) Pay the civil penalty assessment within thirty (30) days from the date of receipt
of this letter; or

Page 4 of 6
2) File a written petition to Wake County Department of Environmental Services to
request a hearing to appeal the civil penalty within thirty (30) days from the date
of receipt of this letter. The "Appeal of Civil Penalties — Erosion and
Sedimentation Control" guidance document is attached.
3) Alternatively, if you choose to stipulate to the facts on which this assessment
was based, but wish to request remission of the civil penalty, then within sixty
(60) days from the date of receipt of this letter you must file a written request
for a remission of the civil penalty form the North Carolina Sedimentation
Control Commission.
If the payment is not received or equitable settlement reached within 30 days from the date of
receipt of this letter, the matter must be referred to the County Attorney for institution of a
civil action in the name of the County, in the appropriate division of the General Court of Justice
in Wake County for recovery of the penalty, Article 10-42-5(B).
Below are the instructions for procedures related to payment of civil penalties, appeal of civil
penalties and remission of civil penalties.
A. PAYMENT OF CIVIL PENALTY
To pay the penalty, send a check or money order made payable to Wake County to Wake
County Department of Environmental Services, P.O. Box 550, Raleigh, NC 27602-0550.
Payment of this penalty will not foreclose further enforcement action against you for any new
violation. If the violations which resulted in this penalty assessment are continuing in nature,
Wake County reserves the right to assess additional civil penalties in the future, or take other
enforcement action against you.
B. CIVIL PENALTY APPEAL
If you file an appeal, it must be in writing and submitted to Michael Orbon, P.E, Water Quality
Director of the Wake County Department of Environmental Services, P.O. Box 550, Raleigh, NC
27602-0550. The applicant bears the burden of presenting factual evidence that the appeal
meets one or more of the following tests:
• The penalty was issued in error to a person not responsible for the violation (see
definition of Person Responsible for Violation Section 10-12 Definitions of the UDO)
• Violation resulted from extenuating or mitigating circumstances beyond the control of
responsible person (e.g. natural disaster)

Page 5 of 6
• Penalty amount is inconsistent with Wake County's policy and the Civil Penalty
Assessment Factors outlined in Section 10-42-2 of the Unified Development Ordinance
• Other extenuating or mitigating circumstances (Specify)
C. CIVIL PENALTY REMISSION
A request for remission is limited to consideration of the six factors listed below and is not the
proper procedure for contesting the accuracy of any of the statements contained in the
assessment document.
Because a remission request forecloses the option of an administrative hearing, such a request
will not proceed without a waiver of your right to an administrative hearing and a stipulation
that there are no factual or legal issues in dispute.
You must execute and return to this office the attached "Waiver of Right to an Administrative
Hearing and Stipulation of Facts" and the attached "Justification of Remission Request" which
should provide additional information on the following factors which shall be considered in
determining whether a civil penalty remission request will be approved:
1) Whether one or more of the civil penalty assessment factors in Section 10-42-2
of the UDO were wrongly applied to the detriment of the petitioner.
2) Whether the petitioner promptly abated continuing environmental damage
resulting from the violation.
3) Whether the violation was inadvertent or a result of an accident.
4) Whether the petitioner had been assessed civil penalties for any previous
violations.
5) Whether the payment of the civil penalty will prevent payment for necessary
remedial actions or would otherwise create a significant financial hardship.
6) The assessed property tax valuation of the petitioner's property upon which the
violation occurred, excluding the value of any structures located on the property.
You have the burden of providing information concerning the financial impact of a civil penalty
and the burden of showing any financial hardship.
If you file a request for remission of the civil penalties, you must submit the required
information within 60 days of receipt of this notice to Jeevan Neupane, PE, QA/QC Program
Lead, Field Consultation Group of the Wake County Department of Environmental Services, P.O.
Box 550, Raleigh, NC 27602-0550

Page 6 of 6
Your prompt attention and cooperation in this matter is appreciated. Reference all attached
documents for additional information. If you have any questions, contact me at 919-868-4986.
Sincerely,
Jeevan Neupane, P. E
Environmental Consultant
cc:
Joseph Threadcraft, Ph.D., P. E., Director, Wake County Department of Environmental Services
Michael Orbon, P. E., Director, Water Quality Division
Melinda Clark, AICP, CFM, Watershed Manager, Water Quality Division
Jeevan Neupane, PE, QA/QC Program Lead, Field Consultation Group
Julie Coco, P.E., CPESC, State Sediment Engineer, NCDEQ— Division of Energy, Mineral, and Land
Resources
Bill Denton, P.E., Regional Engineer, NCDEQ— Division of Energy, Mineral, and Land Resources
Scott Vinson, Water Quality Supervisor, NCDEQ— Division of Water Resources
Attachments:
Wake County Inspection Report
"Resources for Technical Assistance — Erosion and Sedimentation Control"
"Appeal of Civil Penalties — Erosion and Sedimentation Control" — Wake County
"Justification of Remission Request" - North Carolina Department of Environmental Quality
"Waiver of Right to an Administrative Hearing and Stipulation of Facts" — North Carolina
Department of Environmental Quality

FRP CONTACT: Marc Chadwick
CONTRACTOR CONTACT:
PROJECT NAME: Mason Farm
PERMIT ISSUE DATE: 7/6/2018
INSPECTION DATE: Friday, June 19, 2020
INSPECTION In Violation, NOV issued
STATUS:
VIOLATIONS \ NONCOMPLIANCE:
Check all that apply
A. Failure to have an approved plan (WC UDO, 10-40-1)
X B. Failure to protect against off -site sedimentation (WC UDO, 10-40-3 & 10-40-4)
X C. Failure to provide adequate groundcover (WC UDO, 10-20-5 (A)(2) & 10-20-5(B)(5)
X D. Failure to maintain erosion control measures (WC UDO, 10-23-1, 10-23-2, 10-23-3, 10-23-4)
X E. Failure to follow approved plan (WC UDO, 10-40-2)
F. Failure to renew permit (WC UDO, 10-30-9)
X G. Potential NPDES Violation
H. Failure to self inspect (G.S. 113A-54.1(e) & NCAC 413.0131)
OBSERVATIONS/CORRECTIVE ACTIONS:
FRP CONTACT EMAIL: Marc. Chadwick(cbashtonwoods.com
CONTRACTOR EMAIL:
PERMIT NUMBER: S-6134
PERMIT EXPIRATION DATE: 7/6/2020
WEATHER, SITE CONDITIONS, ETC. 90s sunny
PREVIOUS INSPECTION STATUS: Not in Compliance with Wake County UDO
HAS SEDIMENT DAMAGE OCCURRED? YES
If YES, Check all that apply:
Lake/Stream/Buffer Onsite
X Lake/Stream/Buffer Offsite
Other Property
Degree of Sediment damage?
Moderate
Hand remove sediment from the buffer as much as possible in affected areas without doing further damage. Stabilize areas within riparian buffer
using Native Riparian Buffer seed mix and cover with pine straw or leaf litter. The offsite sediment to the buffer shall be self -reported to NCDEQ-
Division of Water Resources and the Division of Energy Mineral and Land Resources at [phone].
Remove accumulated sediment along the silt fence and outlets downslope of Basin 1. Repair and maintain silt fence and outlets.
Repair inlet protection throughout the site.
Repair active erosion on exterior slopes of Basin 1 slopes and stabilize them with rolled erosion control products. Provide ground cover on other bare
and inactive areas.
Provide all self -inspection reports for last four weeks.
Additional enforcement action will be taken.
COMMENTS:
Reminder: Per 15A NCAC 04B .0131 SELF -INSPECTIONS, Section (2); Any documentation of inspections that occur on a copy of the approved erosion
and sedimentation control plan shall occur on a single copy of the plan and that plan shall be made available on the site. Any inspection reports shall also
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------------------------------------.-------------------- -------..----------------------------------------------------------------------------.
be made available on the site.
........................................................................................................... .............................................------------------------------------------------------------------------------------------------- .---------------------------------------------......-----......-------- . .----------------------------------------------------------------------------.
CORRECTIVE ACTION
DEADLINE:
ENVIRONMENTAL
CONSULTANT:
Tuesday, July 14, 2020
Jeevan Neupane
919-819-8907
[e-mail]

FRP CONTACT:
Marc Chadwick
CONTRACTOR CONTACT:
PROJECT NAME:
Mason Farm
PERMIT ISSUE DATE:
7/6/2018
INSPECTIOt
INSPECTION DATE:
6/19/2020
INSPECTION
STATUS:
In Violation, NOV issued
Photo 1:Remove sediment from buffer.
Photo 3: Repair silt fence and outlet.
FRP CONTACT EMAIL: Marc. Chadwick(c�ashtonwoods.com
CONTRACTOR EMAIL:
PERMIT NUMBER: S-6134
PERMIT EXPIRATION DATE: 7/6/2020
WEATHER, SITE
CONDITIONS, ETC.
PREVIOUS INSPECTION
STATUS:
90s sunny
Not in Compliance with Wake County LIDO
Photo 2:Remove sediment from buffer.
13
Photo 4: Remove sediment from the silt fences. Repair silt fence and
outlets.
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, _ - ��' 4 • f, 4 .;~ i{ :�-. 4 al • -,� mil+ ` r r �•�+ ' rt _ + .� V ,
Photo 5: Remove sediment from the silt fences. Repair silt fence and Photo 6: Stabilize slopes.
outlets.

JUSTIFICATION FOR REMISSION REQUEST
Project or Propert Identification: Mason Farm Estates County: Wake
Assessed Party: Ashton Raleigh Residential, LLC
Project No. (If applicable): S006134 Amount Assessed: $5,000
Please use this form when requesting remission of this civil penalty. You must also complete the
"Waiver of Right to an Administrative Hearing, and Stipulation of Facts " form to request
remission of this civil penalty. You should attach any documents that you believe support your
request and are necessary for Wake County, Environmental Services to consider in evaluating your
request for remission. Please be aware that a request for remission is limited to consideration of
the factors listed below. Requesting remission is not the proper procedure for contesting whether
the violation(s) occurred or the accuracy of any of the factual statements contained in the civil
penalty assessment document. Pursuant to N.C.G.S. § 113A-64.2(b), the following factors shall
be considered in determining whether a civil penalty remission request will be approved. Please
check each factor that you believe applies to your case and provide a detailed explanation,
including copies of supporting documents, as to why the factor applies (attach additional pages as
needed).
❑ (a) one or more of the civil penalty assessment factors in N.C.G.S. 113A-64(a)(3) were
wrongfully applied to the detriment of the petitioner (please refer to the "Assessment
Factors " summary attached);
❑ (b) the violator promptly abated continuing environmental damage resulting from the
violation (i.e., explain the steps that you took to correct the violation and preventfuture
occurrences);
❑ (c) the violation was inadvertent or a result of an accident (i.e., explain why the violation
was unavoidable or something you could not prevent or prepare for);
❑ (d) the violator had not been assessed civil penalties for any previous violations;
❑ (e) payment of the civil penalty will prevent payment for the remaining necessary remedial
actions or would otherwise create a significant financial hardship (i.e., explain how
payment of the civil penalty will prevent you from performing the activities necessary
to achieve compliance);
❑ (f) the assessed property tax valuation of the violator's property upon which the violation
occurred, excluding the value of any structures located on the property.
Please note that you have the burden of providing information concerning the
financial impact of a civil penalty and the burden of showing any financial hardship
EXPLANATION (attach additional pages as necessary):

STATE OF NORTH CAROLINA
WAKE COUNTY
IN THE MATTER OF ASSESSMENT ) WAIVER OF RIGHT TO AN
OF CIVIL PENALTIES AGAINST) ADMINISTRATIVE HEARING AND
Ashton Raleigh Residential, LLC ) STIPULATION OF FACTS
Property Identification or Project #: Mason Farm Estates S006134
Having been assessed civil penalties totaling $5,000 for violation(s) as set forth in the
assessment document of the Environmental Consultant, Wake County dated 7/2/2020, the
undersigned, desiring to seek remission of the civil penalties, does hereby waive the right to an
administrative hearing in the above -stated matter and does stipulate that the facts are as alleged in
the assessment document.
The undersigned further understands that all evidence presented in support of remission of
this civil penalty must be submitted to Jeevan Neupane, RE, QA/QC Team Lead, Environmental
Service, Wake County within sixty (60) calendar days of receipt of the civil penalty assessment.
No new evidence in support of a remission request will be allowed after sixty (60) calendar days
from the receipt of the civil penalty assessment.
This the day of ,20
NAME (printed)
SIGNATURE
ADDRESS
TELEPHONE

APPEAL OF CIVIL PENALTIES
o� EROSION AND SEDIMENTATION CONTROL
NORTH CAROLINA
Submit required documentation to:
Water Quality Director
Wake County Dept. of Environmental Services
P. o. Box SSO
Raleigh, NC 27602-0550
Appeal of Civil Penalties
Section 10-42 of the Wake County Unified Development Ordinance (UDO) provides for appeal of civil
penalties for violations of Article 10 Erosion and Sedimentation Control. Persons assessed a civil penalty
may appeal the assessment of civil penalties within 30 days of receipt of the notice of assessment.
Process for Appeals
The applicant must submit a letter to the address given above requesting a hearing to appeal civil
penalties and shall identify which of the appeal test(s) listed below apply. Appeals will be considered at
a hearing before the Director of Water Quality of the Environmental Services Department. Upon receipt
of the application, a hearing will be scheduled.
The applicant bears the burden of presenting factual evidence that the appeal meets one or more of the
following tests:
1) The penalty was issued in error to a person not responsible for the violation (see definition of
Person Responsible for Violation Section 10-12 Definitions of the UDO)
2) Violation resulted from extenuating or mitigating circumstances beyond the control of
responsible person (e.g. natural disaster)
3) Penalty amount is inconsistent with Wake County's policy and the Civil Penalty Assessment
Factors outlined in Section 10-42-2 of the Unified Development Ordinance
4) Other extenuating or mitigating circumstances (Specify)
Procedure for Hearing
1. Director of Water Quality opens hearing
2. Summary of violation(s) and relevant information presented by Environmental Consultant
3. Evidence supporting appeal test(s) presented by applicant
4. Questions/clarifications
5. Determination of Decision by Water Quality Director

Resources for Technical Assistance — Erosion and Sedimentation Contro
Erosion and Sedimentation Control Plan Requirements and Submittal Documents:
Wake County Sedimentation and Erosion Control Program Website:
http://www.wakegov.com/water/stormwater/erosion/Pages/default.aspx
On this page you can link to the following information:
• Designing and Permitting (Plan approval process, design criteria, specifications,
requirements and construction details)
• Forms and fees (Application, Financial Responsibility/Ownership form, submittal
checklist and other documents)
• Staff contacts
• Rules and regulations (Wake County Unified Development Ordinance)
To Locate a Plan Desiener:
The level of design needed for your plan will depend on the specific project conditions. The
following are provided as references. Directories of licensed or certified individuals may be
found on these websites:
NC Board of Examiners for Engineers & Surveyors: http://www.ncbels.org/
NC Board of Licensed Soil Scientists: http://www.ncblss.org/
Certified Professionals in Erosion and Sediment Control http://www.cpesc.org/
Other Downloads and Links:
NC Department of Environmental Quality Website: http://portal.ncdenr.org/web/Ir/erosion
This website provides links to design calculations spreadsheets, manuals and publications, and
information regarding any upcoming workshops or training events.
If you have any questions, or need additional information, please do not hesitate to contact
Watershed Management staff
http://www.wakegov.com/water/stormwater/Pages/staff.aspx

WAKE
COUNTY
NVRI II CARD[INA
Stavi n
Wake County Environmental Services Department
Water Quality Division, Watershed Management Section
336 Fayetteville St. • P.O. Box 550 • Raleigh, NC 27602
TEL [phone] • FAX [phone]
in Com
liance
A guide to common maintenance
and installation issues with your
Erosion Control Plan
v1 2-25-16

Temporary Gravel Construction Entrance
• At all points of entrance and exits
for construction traffic
• Constructed of 2-3 inch clean
stone (no fines); 6 inches deep
with geotextile underlayment
Using geotextile fabric under rock
saves on maintenance!
9 At least 50' long
9 Flare at road for turning radius
Ed MIN.
BUT SUFFICIENT TO KEEP
SEEIMENT ON SITE
OR WIDTH or
EASTINC 0
PROPOSED STREET.
ROADWAY -,ti.
WHICHEVER is
GREATER.
MQJ12 I. PUT SILT FENCE OR TREE PROTECTION FENCE UP TO
ENSURE CONSTRUCTION ENTRANCE IS USED.
2. �F CON"UCIRON ON THE SITES ARE SUCH THAT THE MUD
5 NOT REMOVED BY THE VEHICLE TRAVELING OVER THE
STONE. THEN THE TIRES OF THE VEHICLES MUST BE WASHED
BEFORE ENTERING THE PUBLIC ROAD.
3. MAINTAIN GRAVEL PAD IN A CONDITION TO PRI MUD OR
SEDIMENT FROM LEAVING CONSTRUCTION SITE. ENTRANCE
HILL REWIRE PERiI RE:wovAL or srnww-LADEN
STONE AMC REPLACEMENT WITH FRESH STONE.
35, MIN. 15' MIN. NEW CMSTRU"M--,,
EXISTING ROADWAY
- ---- ---------------
6. MIN.11- MIN-
AERC UNDER STONE
CROSS SECTION
COUN
STANDARD CONSTRUCTION ENTRANCE

Temporary Gravel Construction Entrance
Installation
— Locate on flat area
— Follow natural contours
— Use geotextile fabric for seasonally
wet areas and for underlining
— Vegetate surrounding area
— Flare ends to handle turning radius
— Use 2 — 3 in. stone (no fines)
Maintenance
— Inspect surface condition
— Add new stone as needed
— Check adjacent areas after rain event
for tracking
Orl� , , - - W-'
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MINIMUM 10 GAUGE
LINE WIRES
NOTE:
1. USE SILT FENCE ONLY WHEN DRAINAGE AREA
DOES NOT EXCEED 1/4 ACRE AND NEVER IN
AREAS OF CONCENTRATED FLOW.
2. REMOVE SEDIMENT DEPOSITED AS NEEDED TO
PROVIDE STORAGE VOLUME FOR THE NEXT RAIN
AND TO REMOVE PRESSURE ON THE SILT
FENCE.
COUN
R fH CAROLPI
Silt Fence
8'-D" MAXIMUM
FRONT VIEW
STEEL POST
WOVEN WARE FABRIC
SILT FENCE FABRIC
�a
n
FILL SLOPE
i
••a
n
!�s' GRADE
8" MINIMUM COVER
o
I
OVER SKIRT
ANCHOR SKIRT AS DIRECTED
SIDE
BY ENGINEER
VIEW
STANDARD TEMPORARY SILT FENCE
• Less than % acre per 100 ft.
offence
• Not applicable in
concentrated flows
• The toe of the fabric must be
anchored
MINIMUM 12-1/2 GAUGE
INTERMEDIATE WIRES
GRADE
• Maximum design life is 6
months
• Must use steel posts (not
wooden)

Silt Fence
0 Installation
— Place along contours to capture
sheet flow
— Entrench bottom 8 in. down and
4 in. forward along trench
Maintenance
— Inspect weekly and after each
rainfall event
— Clean out when 50% full
— Replace fabric if ineffective
(collapsed, torn, decomposed,
etc.)
— Remove when area is stable
r -fix %got#
��

Silt Fence Outlets
• Used in combination with silt fence
• To be placed at low areas of small concentrated flow
• 1 acre maximum per outlet

Silt Fence Outlets
Installation
— Must have hardware cloth with
washed #57 stone
— Metal posts 2' apart
Maintenance
— Inspect weekly and after each
rainfall event
— Clean out when 50% full
— Replace fabric if ineffective
(collapsed, torn, decomposed,
etc.)
— Remove when area is stable
�'4�t'-•i.
Jar-
'y� .
:,r

Rock Check Dam
T0P ELEVATION OF STORMWATER p,5'—I'
#5 WASHED - iMAX.
STONE I
m
EXISTING SLOPE
#1 RIP —RAP
VARIES
I EXISTING SLOPES SIDE VIEW
VARIES
cprlsTxucnpN NOTES:
HEIGHT 7k WIDTH DETERMINED 9Y
EXISTING TOPOGRAPHY AND
SEDIMENT STORAGE REQUIRED.
0.5'-1' _
KEY RIP RAP INTO THE DAM
FOR STABILIZATION.
KEYED RIP RAP
p5 wASHEO srONL
FRONT VIEW
�SnrrG �QUNn
STEP SEQUENCE
NOTE: REMOVE SEDIMENT ACCUMULATION FROM BEHIND
CHECK GAMS TO PREVENT DAMAGE TO CHANNEL VEGETATION.
TH FLOW SHWLA BE MAINTAINED THROUGH E DAM.
I KF
co
nmen
Drainage area should not exceed % ac.
For use in small open channels
Do not use in streams
Ensure top of lower dam is not higher than toe of upper dam

Rock Check Dams
• Installation
— Extend rock far enough up each
side slope to prevent flow
around the ends
— 2 ft. maximum height at center
— Keep center of dam at least 9 in.
lower than outer edges
— Side slopes 2:1 or flatter
• Maintenance

Skimmer Basins
IB• MN
IAPP PROTECTION
DITCN AM BURY TARP
Alu EOGE I— 12'1
V[IR I vc
V MIN FREEBOARD TOP OF BERN
INFLOW BAFFLES (STD) MERGENLY
STIR CTURE $ SPIVAT'
1 ELEVATION
OE ATERING
ZOME
DISSIPATER
PAD
RIP RAP
INLET ,SHALL BE CyP OUTLET PIP
PROTECTED (AS NEEDED) CROSS SECTION
FROM ER6SMN VITH
RIPRAP, TARP, MATTING
OR EQUIVALENT,
MOTS:
I) BASH SHOULD BE CLEANED CUT WHEN CAPACITY REACHES AN ELEVATION REPRESENTING THAT THE HAM IS HALF -FULL
2) THE TARP USED TO PROTECT THE WEIR SHALL BE THE WDRH SPECNFIED. THE LENGTH GF THE TARP SHALL BE ACCORDMIS
TC AVAILABLE SUPPLY. IF MULTIPLE TARPS ARE TO BE USED, THEN TARPS SHALL BE OVERLAPPED AT LEAST 12'. THE
UPSTREAM Ir TARP SkA OVERLAP THE DOWHSTREPN TARP. THE TARP SHILL BE IN) MIL. HEAVY DUTY SILVER TARPAULINS
OR EOUIVALFNT FOR U.Y. RESISTANCE.
3) PRONCE A MINIMUM OF THREE POROUS BAFFLES TC EVENLY DISTRIBUTE FLOW ACROSS THE BASIN, REDUCING TURBULENCE.
4) BAFFLE MAFE Al MUST BE SECURED IT THE .1. AND SIDES USING STAPI. ES OR IV IRENF41NG AS FCR A SILT FENCE.
3) MOST GF THE IMMENT WILL A011141LITE IN THE FIRST BAY. SO THIS SHUUX ME READILY AVAILABLE FOR MAINTENANCE.
6} DURING THE CONSMUCTON PHASE CF THE PROJECT, PERMANENT STORMWATER RISER SHALL CNLY OEWATFR FROM THE TOP OF PIPE,
] PDND SHALL NOT BE CONVERTED FOR STORMWATER USE UNTIL APPROVED BY ENVIRONMENTAL ENGINEER.
CARD STANDARD SKD4MFR BASIN
EPPecnva: 01n tros
Dewaters basin from the surface • Drainage area < 100 acres
Allows sediment more settling • Do not use in streams
before discharge
0 Stabilize embankment and slopes

Skimmer
Installation
— Provide access for sediment
removal
— Stabilize slopes and interior of
basin
— Stabilize spillway outlet
— Floors should be flat
Maintenance
— Inspect weekly and after every
rain event
— Clean out at 50% capacity
— Remove trash/debris from riser
Basins

Hardware Cloth & Gravel
Inlet Protection
NOTE:
t. INSPECT INLET PROTECTION AND REMOVES
AFTER EACH RAIN EVENT. GRAVEL SHOULD 6.
AND REPAIRS MADE AS NEEDEC.
A
cauN
rwxxxcnaal.w
STANDARD META. POSTS 7-0' IN GROUND
GALVANIZED HARDWARE WIRE
EXTENDS TO TOP OF BOX
HT OF 1 r-18" MINIMUM ABOVE TOP OF BOX
STANDARD GRAVEL YARD INLET PROTECTION
FFFF('TT UF. n I n 1 mR
• Prevents sediment from entering the
culvert prior to stabilization of the
drainage area
• Used to supplement traps or basins
• Drainage area should be <1 ac.
• Do not use near edge of fill
• Provide berms where needed
to prevent by-pass

Hardware Cloth & Gravel
Inlet Protection
Installation
— 2 ft. min. height of fabric
— 5 ft. steel posts at least 4ft.
apart
— Secure wire to posts at
middle, top and bottom
— Create ponding and sediment
storage area around measure
Maintenance
— Inspect weekly and after each
rainfall event
— Clear out debris and sediment
— Replace stone as needed
— Clean out accumulated sediment

Horseshoe Inlet Protection
\ \ c CLASS 1 RIP RAP (SEE SECPCN THRU BASIN BELOW)
\� RIP RAP HEADWALL
#5 WASHED STONE. V-D" THICK x 3'-C" HIGH MINIMUM
AGE AREA
PERSPECTIVE MEW
NO SCALE
AREAS TO BE DISTURBED SEDIMENT STORAGE
(CUT. FILL ETC.)1. STORAGE YUNE RIP RAP
\ � r HEADWALL
INV
PIPE ERGROUNDNATURAL GROUND
flow
n T
CLASS 1 RIP -RAP
MAXIMUM NT DEPTH #5 WASHED STONE
(CLEAN OUTT POINT)
5E=N THRU CATCH BASIN, FILTER AND CULVERT PIPE
NO SCALE
couN
STANDARD HORSESHOE INLET PROTECTION
• Prevents sediment from entering Used to supplement traps or
he culvert prior to stabilization of basins
the drainage area Protects storm system from
• Built-in sediment storage downstream sedimentation

Horseshoe Inlet Protection
• Installation
— Structural stone should be
Class B with 2:1 slope
— Outside face should be
washed #57 stone
— Create ponding and sediment
storage area around measure
• Maintenance
— Inspect weekly and after each
rainfall event
— Clear out debris and sediment
— Replace stone as needed
— Clean out accumulated sediment

Grassed Lined Channels
& Clean Water Diversions
1. DIVERSION TO BE USED UPSLOPE OF A CONSTRUCTION SITE TO PREVENT STORM RUNOFF FROM ENTERING THE DISTURBED AREA.
2. IMMEDIATELY LINE AND STABILIZE BEFORE ANY OOWNSLOPE GRADING BEGINS (STABILIZATION MUST OOCUR BEFORE ISSUANCE OF A
CERTIFICATE OF COMPLIANCE). STABILIZATION METHOD IS BASED ON VELOCITY OF OFFSITE DRAINAGE.
3. DIVERSIONS SHOULD ONLY BE USED FOR DRAINAGLS 5 ACRES OR LESS.
4. ANY SEDIMENT LADEN WATER PRIOR TO STABILIZATION OF THE DIVERSION MUST BE DIVERTED INTO AN APPROVED EROSION AND SEDIMENT
CONTROL BMP. CLEAN WATER SHOULD EMPTY INTO AN APPROVED OUTLET DEVICE.
2' MIN. I -
Disturbed Am
CROSS SECTIONAL VIEW
STANDARD CLEAN WATER DIVERSION
• Conveys concentrated runoff • For slopes generally less than
• Dense vegetation is essential 5%
• Temporary liner, check dams,
or wattles may be needed

Grassed Lined Channels
& Clean Water Diversions
Installation
— Construct prior to grading and
paving
— Dense vegetation is essential
— For slopes generally less than 5%
— Channel should avoid sharp turns
— Temp liner, check dams, or wattles
may be needed
Maintenance
— Check weekly and after rain events
— Check bank stability
— Check for in -channel erosion and
head cutting
— Remove sediment accumulation

Ground Cover
Temporary & Permanent
• Benefits
- Reduces flow velocity
- Increases the rate of infiltration
- Best erosion and sediment
control practice
-Relatively low installation &
maintenance cost
• Considerations
- Slope
- Aspect
- Climate
- Management
- Soils
NPDES Stormwater Discharge Permit for Construction Activities
(NCGO1)NCDENR/Division of Water Quality
NEW STABILIZATION TIMEFRAMES
(Effective Aug. 3, 2011)
SITE AREA DESCRIPTION STABILIZATION TIMEFRAME EXCEPTIONS
Perimeter dikes, swales,
ditches, slopes 7 days
High Quality Water (HQW) 7 days
Slopes steeper than 3:1 7 days
Slopes 3:1 or flatter 14 days
All other areas with slopes 14 days
flatter than 4:1
None
None
If slopes are 10' or less in
length and are not steeper
than 2:1, 14 days are
allowed.
7 days for slopes greater
than 50' in length.
None, except for
perimeters and HQW
Zones.

n
Ground Cover
Temporary & Permanent
Installation
— Loosen soil surface by disking,
raking, harrowing
— Track slopes to create small
furrows for seed and water
— Apply lime/fertilizer as needed
Maintenance
— Reseed and mulch areas where
initial germination is poor
— Do not allow temporary cover
to grow more than 12" in
height before mowing;
otherwise, fescue may be
shaded out.
Other Options
— Wood chips mulch
— Shredded bark
Not tracked
Tracked
Remember: Interior erosion leads to enforcement!