SW7120901_CURRENT PERMIT_20200422

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW:j/�i�/
DOC TYPE
� CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
YYYYMMDD

j la AO
ROY COOPER
Governor
MICHAEL S. REGAN
5ecrercry
BRIAN WRENN
Acting Director
Mr. Charles E. Schulz,
MCAS Cherry Point
PSC Box 8006
NORTH CAROLINA
Environmental Quality
April 22, 2020
Deputy Facilities Officer
Cherry Point, NC 28533
Subject: Stormwater Permit No. SW7120901 Renewal
MCAS Cherry Point P136 Bachelor's Enlisted Quarters
High Density Project
Craven County
Dear Mr. Schulz:
The Washington Regional Office received a Stormwater Management Permit
Application for renewal of the subject permit on March 27, 2020. Staff review of the
applications have determined that the permit can be reissued. We are forwarding Permit
No. SW7120901 dated April 22, 2020, for the continued operation of the subject project.
This permit, upon its effective date, will replace all previous State Stormwater permits for
this project. This permit shall be effective from September 18, 2020 until September 17
2028 and shall be subject to the conditions and limitations as specified therein, and does
not supersede any other agency permit that may be required. Please pay special attention
to the Operation and Maintenance requirements in this permit. Failure to establish an
adequate system for operation and maintenance of the stormwater management system
will result in future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you
have the right to request an adjudicatory hearing upon written request within thirty (30)
days following receipt of this permit. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714.
Unless such demands are made this permit shall be final and binding.
If you have any questions, or need additional information concerning this matter, please
contact me at [phone].
Sincerely,
Roger K. Thorpe
Environmental Engineer
`. North Carolina Departmenr of Ei7vi{ cnmentai Quality j Division of Energy, Mineral and Land itesources
E
J — `•/ bVa�hington Regional Office 1 943 VVaShington SquDre Mali 1 "VaShington. North Carolina 27$84

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL, AND LAND RESOURCES
STATE STORMWATER MANAGEMENT PERMIT
HIGH DENSITY DEVELOPMENT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of
North Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
MCAS Cherry Point
P136 Bachelor's Enlisted Quarters
Located at 4 to Ave. & E Street, Cherry Point,NC, Craven County
FOR THE
construction, operation and maintenance of an infiltration trench in compliance with the
provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwater rules') and
the approved stormwater management plans and specifications and other supporting
data as attached and on file with and approved by the Division of Energy, Mineral, and
Land Resources (Division) and considered a part of this permit.
This permit shall be effective from September 18, 2020 until September 17, 2028, and
shall be subject to the following specified conditions and limitations:
I. DESIGN STANDARDS
1. This permit is effective only with respect to the nature and volume of stormwater
described in the application and other supporting data.
2. This stormwater system has been approved for the management of stormwater
runoff as described in Section 1.7 of this permit. The stormwater control has been
designed to handle the runoff from total of 217,591 square feet of impervious area.
3. The tract will be limited to the amount of built -upon area indicated in Section 1.7 of
this permit, and as shown on the approved plans.
4. All stormwater collection and treatment systems must be located in either
dedicated common areas or recorded easements. The final plats for the project
will be recorded showing all such required easements, in accordance with the
approved plans.

r1
The runoff from all built -upon area within the permitted drainage area of this project
must be directed into the permitted stormwater control system.
The built -upon areas associated with this project shall be located at least 50 feet
landward of all surface waters.
The following design criteria have been provided in the infiltration trench and must
be maintained at design condition:
a
b
c
d
e
f.
9
h
I
m
n.
o.
p-
INFILTRATION TRENCH
Drainage Area, ft :
Total Impervious Surfaces, ft':
Design Storm, inches:
Trench Length ft:
Trench Width, ft.-
Trench Height, ft:
Bottom Elevation, FMSL:
Bypass Weir Elevation, FMSL:
Permitted Storage Volume, ft3:
Type of Soil:
Expected Infiltration Rate, in/hr:
Seasonal High Water Table, FMSL
Time to Draw Down, days:
Receiving Stream/River Basin:
Stream Index Number:
Classification of Water Body:
11. SCHEDULE OF COMPLIANCE
293,196
217,591
1.5"
252'
67'
2.30'
19.50'
21.30'
26,408
GuA — loamy fine sand - urban
7.00
17.50'
0.06
Slocum Creek / Neuse River Basin
27-112
"SC, Sw, NSW"
The stormwater management system shall be constructed in its entirety, vegetated
and operational for its intended use prior to the construction of any built -upon
surface.
2: During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
3. The permittee shall at all times provide the operation and maintenance necessary
to assure the permitted stormwater system functions at optimum efficiency. The
approved Operation and Maintenance Plan must be followed in its entirety and
maintenance must occur at the scheduled intervals including, but not limited to:
a. Semiannual scheduled inspections (every 6 months).
b. Sediment removal.
C. Mowing and revegetation of slopes and the vegetated filter.
d. Immediate repair of eroded areas.
e. Maintenance of all slopes in accordance with approved plans and
specifications.

f. Debris removal and unclogging of bypass structure, infiltration media, flow
spreader, catch basins, piping and vegetated filter.
g. A clear access path to the bypass structure must be available at all times.
4. Records of maintenance activities must be kept for each permitted BMP. The
reports will indicate the date, activity, name of person performing the work and
what actions were taken.
5. The facilities shall be constructed as shown on the approved plans. This permit
shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other
supporting data.
6. If the stormwater system was used as an Erosion Control device, it must be
restored to design condition prior to operation as a stormwater treatment device,
and prior to occupancy of the facility.
7. Upon completion of construction, prior to issuance of a Certificate of Occupancy,
and prior to operation of this permitted facility, a certification must be received from
an appropriate designer for the system installed certifying that the permitted facility
has been installed in accordance with this permit, the approved plans and
specifications, and other supporting documentation. Any deviations from the
approved plans and specifications must be noted on the Certification. A
modification may be required for those deviations.
8. Access to the stormwater facilities shall be maintained via appropriate easements
at all times.
9. The permittee shall submit to the Director and shall have received approval for
revised plans, specifications, and calculations prior to construction, for any
modification to the approved plans, including, but not limited to, those listed below:
a. Any revision to any item shown on the approved plans, including the
stormwater management measures, built -upon area, details, etc.
b. Project name change.
C. Transfer of ownership.
d. Redesign or addition to the approved amount of built -upon area or to the
drainage area.
e. Further subdivision, acquisition, lease or sale of all or part of the project
area. The project area is defined as all property owned by the permittee, for
which Sedimentation and Erosion Control Plan approval or a CAMA Major
permit was sought.
f. Filling in, altering, or piping of any vegetative conveyance shown on the
approved plan.
10. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
11. A copy of the approved plans and specifications shall be maintained on file by the
Permittee at all times.

12. The Director may notify the permittee when the permitted site does not meet one
or more of the minimum requirements of the permit. Within the time frame specified
in the notice, the permittee shall submit a written time schedule to the Director for
modifying the site to meet minimum requirements. The permittee shall provide
copies of revised plans and certification in writing to the Director that the changes
have been made.
III. GENERAL CONDITIONS
This permit is not transferable to any person or entity except after notice to and
approval by the Director. In the event of a change of ownership, or a name change,
the permittee must submit a completed Name/Ownership Change form to the
Division, signed by both parties, and accompanied by the appropriate
documentation as listed on page 2 of the form. The approval of this request will be
considered on its merits and may or may not be approved.
2. The permittee is responsible for compliance with all permit conditions until such
time as the Division approves the transfer request.
3. Failure to abide by the conditions and limitations contained in this permit may
subject the Permittee to enforcement action by the Division, in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
4. The issuance of this permit does not preclude the Permittee from complying with
any and all statutes, rules, regulations, or ordinances, which may be imposed by
other government agencies (local, state, and federal) having jurisdiction.
5. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action,
including those as may be required by this Division, such as the construction of
additional or replacement stormwater management systems.
6. The permittee grants DEQ Staff permission to enter the property during normal
business hours for the purpose of inspecting all components of the permitted
stormwater management facility.
7. The permit issued shall continue in force and effect until revoked or terminated.
The permit may be modified, revoked and reissued or terminated for cause. The
filing of a request for a permit modification, revocation and reissuance or
termination does not stay any permit condition.
8. Unless specified elsewhere, permanent seeding requirements for the stormwater
controls must follow the guidelines established in the North Carolina Erosion and
Sediment Control Planning and Design Manual.
9. Approved plans and specifications for this project are incorporated by reference
and are enforceable parts of the permit.

10. The issuance of this permit does not prohibit the Director from reopening and
modifying the permit, revoking and reissuing the permit, or terminating the permit
as allowed by the laws, rules and regulations contained in, Title 15A NCAC
2H.1000, and NCGS 143-215.1 et. al.
11. The permittee shall notify the Division in writing of any name, ownership or mailing
address changes at least 30 days prior to making such changes.
12. This permit shall be effective from September 18, 2020 until September 17, 2028.
Application for permit renewal shall be submitted 180 days prior to the expiration
date of this permit and must be accompanied by the processing fee.
Permit issued this the 22 nd day of April 2020.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
` for
Brian Wrenn, Acting Director
Division of Energy, Mineral, and Land Resources
By Authority of the Environmental Management Commission
Stormwater Permit No. SW7120901

... __UtMLK'USL'UNLY
Date Received
Fee Paid
Permit Number
'J-7 Zo
vs, o0
1 5 w7 1 '.-Lv of
NC DEQ Division -of Energy, Mineral and Land Resources
STATE STORMWATER:
PERMIT RENEWAL APPLICATION FORM'
In accordance with 15A NCAC 2H.1045(3). the current permit holder shall renew their high density permit 180 days
prior to its expiration. Renewed permits are valid for a period of 8 years per Session Law 2011-398 (SB 781)
Section 60.(c). This application form is for permit renewals only. RJECEIVIED MAR Z 7 2520
A. PROJECT INFORMATION
1. State Stormwater Permit Number: SW7120901
2. Project name: P136 Bachelor's Enlisted Quarters
3. Project street address: Building 4881, 41h Avenue and E Street
City: Cherry Point County: Craven ZIP
28533
4. What, if any, changes have been made to the project as permitted? None
If the project has changed from the original approved plans, please complete SWU-101 fora Major
Modification or Minor Modification Application form available at: httpsaldeg.nc.goviaboutldivisionsienergy-
mineral-landresources/energy-mineral-land-rules/stormwater-program/post-construction.
B. PERMITTEE INFORMATION
If changes to the permittee or project name have been made, please complete either the Permit Update form
or the Permit Transfer form available at: https://deal.nc.gov/about/divisions/ene[gy-mineral-land
resourceslenergy-mineral-land-rules/stor-mwater-proQr_am/post-construction. State Stormwater Permits do not
automatically transfer with the sale of the property.
1. Current Permit Holder's Company Name/Organization: Marine Corps Air Station, Cherry Point
2. Signing Official's Name: Charles E. Schulz
3. Signing Official's Title: Deputy Facilities Director
4. Mailing Address: PSC Box 8006
City: CherryPoint State: NC ZIP
28533
5. Street Address: Building 4223, Access Road
City: Cherry Point _.,._,.,._.._._ State: NC ZIP:
28533
6. Phone: [phone] Email: charles.e.schulz ccDusmc.mil
Stormwater Permit Renewal Form Page 1 of 3 May 11, 2018

C. SUBMITTAL REQUIREMENTS
Submit the application package to the appropriate DEMLR Regional Office (Coastal, SA Waters) or DEMLR
Central Office (Urbanizing Areas Ph 2, USMP, Non -Coastal HQW10RW). Only applications packages that
include all required items listed below will be accepted and reviewed.
Inittial�each item below to indicate that the required information is provided in the application package:
1. A permit application processing fee of $505.00 payable to NCDEQ.
2. One original signed hard copy and one electronic copy of this completed form. The signing official
named on this application to represent the current permittee must meet one of the following:
a. Corporation — a principle executive officer of at least the level of vice-president;
b. Limited Liability Company (LLC) — a manager or company official as those terms are defined
in G.S. 57D "North Carolina Limited Liability Company Act;"
c. Public Entity — a principal executive officer, ranking official, or other duly authorized employee;
d. Partnership or limited partnership — the general partner;
e. Sale proprietor; or
f. Letter of authorization signed by one of the signatories noted in a — e above authorizing the
signature of another entity.
NA 3. One hard copy and one electronic copy of recorded documents required by the original permit that have
not yet been received by DEMLR, including: deed restrictions, protective covenants,
condom iniumlplanned community declaration and easements. If the project has been built, include
documentation that the maximum BUA per lot or maximum total BUA has not been exceeded. If
the project has not been built, include a signed agreement that the final recorded deed restrictions
and protective covenants will be submitted at a later date.
�5
O&M Agreements, Please select one:
® I have a copy of the current recorded O&M Agreement for all SCMs, and I will continue to
keep this on file with the permit; or
❑ I do not have a copy of the current recorded O&M Agreement for all SCMs and am
requesting a copy be sent to me. I agree to keep this on file with the permit.
Designer Certifications, Please select one:
❑ A copy of the certification(s) confirming that the project was built in accordance with the
approved plans have been previously provided to the Division; or
® A copy of the certification(s) confirming that the project was built in accordance with the
approved plans are enclosed; or
❑ The project has not yet been built.
[IF APPLICABLE] If the project has been built, one original hard copy and one electronic copy of a
signed, sealed, and dated letter from a licensed professional stating that the SCMs have been
inspected, and that they have been built and maintained in accordance with the permit.
NA 7. [IF APPLICABLE] When the permittee is a corporation or a limited liability corporation (LLC): Provide
one hard copy and one electronic copy of documentation from the NC Secretary of State, or other
official documentation, which supports the titles and positions held by the persons listed in Section
C.2 per 15A NCAC 2H. 1043(3)(b).
https:llwww.sosnc.gov/online services/search/by title/ Business Registration
Stormwater Permit Renewal Application Form Page 2 of 3 May 11, 2018

D. PEM
wl RMIIT/+
TE�E'SCQIF
�r A
I, i 1�J vV' +vy� 7/ , the person legally responsible for the permit, certify that I have
a copy of the Permit and O&M Agreement on site (or I will obtain a copy and it will be kept on site), that I am
responsible for the performance of the maintenance procedures, and the site has been and will be maintained
according to the O&M Agreement and approved plans. I agree to notify DEMLR of any problems with the SCMs
or built -upon area and to submit the proper forms to modify or transfer the permit prior to any changes to the
project, SCMs, or ownership. All info ation provided on this permit renewal application is, to the best of my
knowledge, correct and complete.
Signature: Date: Z-7,01Zca7�
NOT RATION: ((
I, aww_.� l.�� a Notary Public for the State of
&VD ti , , ,,County of00A VV , do hereby certify
that l�U �" S �/�nL 2,- personally appeared before me
this the day of W 20�, and acknowledge the due
execution of the forgoing instrument. Witness my hand and official seal,
(Notary Seal)
• \<<�tiifstii��rrrl�/j
E L L
Put)4kc9' `A
Notary Signature:Rl"'4_4 _ tSotacY tow
cn Ons
C� !/v �� county �xP
My commission expires � MY.cosY+m•
10-10-2023
�R Off,`.
r'H C P,
1111!lf11111111�\\\\
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018

oAz
UNITED STATES MARINE CORPS
MARINE CORPS AIR STATION
POSTAL SERVICE CENTER BOX 8003
CHERRY POINT, NORTH CAROLINA 28533-0003
Professional Engineer's Certification
I, Dale A. McFarland, a duly registered Professional Engineer in the State of North Carolina, have
reviewed the approved plans for Stormwater Permit No. SW7120901 and have inspected the existing
conditions at Bachelor Enlisted Quarters 4881. 1 have determined to the best of my knowledge and
abilities that:
1. The project's built -upon area and stormwater management features were constructed in accordance
with the approved plans, specifications, and correspondence.
2. The stormwater control measures (SCMs) have been built in compliance with the permit and are
functioning as intended. Operation and maintenance of the SCMs has been completed in substantial
compliance with the permit.
r
v�g6can q� T
rr ile"
oil'
Dale A. McFarland
Registration #025438

UNITED STATES MARINE CORPS i
MARINE CORPS AIR STATION
POSTAL SERVICE CENTER BOX 8003
CHERRY POINT, NORTH CAROLINA 28533-0003
North Carolina Department of
Environmental Quality
Division of Energy, Mineral, and Land Resources
943 Washington Square Mall
Washington, North Carolina 27889
1 MCEIVED MAR 2 i 2029
IN REPLY REFER TO,
5090/29522
LN
March 16, 2020
SUBJECT: STATE STORMWATER PERMIT NO. SW7120901 RENEWAL APPLICATION
Please see enclosed the State.Stormwater permit renewal package
for Stormwater.Permit SW7120901 which services the Bachelors Enlisted
Quarters at Marine Corps Air Station, Cherry Point. The system
consists of an infiltration trench. The permit is set to expire
September 17, 2020.
We thank you for your consideration on this matter. If there are
any further questions or comments, please contact Mr. Nathan Arnett of
the Environmental Affairs Department at 252-466-5271 or
[e-mail].
Sincerely
C. E. SCHULZ
Deputy Facilities Director
By direction of the
Commanding Officer
Enclosure: Stormwater Permit Renewal Package SW7120901

1 ..
®
� °�
Permit No. L17 0 ` A70*
c)
NCDENR � �� Q b 20��ORMWATER MANAGEMENT PERMIT APPLICATION FORMo t
401 CERTIFICATION APPLICATION FORM
NC DENR INFILTRATION TRENCH SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with all of the required information,
I PROJECT=INFORMATION _
Project name P136
Contact person . Howard Resnik PE
Phone number 910-791-4441
Date 5/25/2012
Drainage area number 1
II DESIGN;INFORMATION,
Site Characteristics
Drainage area
293,196.00
it2
Impervious area
217,591.00
it2
Percent impervious
74.2%
%
Design rainfall depth
1.50
in V/
Peak Flow Calculations
1-yr, 24-hr rainfall depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr discharge
Post -development 1-yr, 24-hr discharge
Pre/Post 1-yr, 24-hr peak fiow control
Storage Volume: Nan -SA Waters
Minimum voiurne required
Volume provided
Storage Volume: SA Waters
1,5' runoff volume
Pre -development 1-yr, 24-hr runoff volume
Post -development 1-yr, 24-hr runoff volume
Minimum volume required
Volume provided
Soils Report Summary
Soil type
Infiltration rate
SHWT elevation
Trench Design Parameters
Drawdown time
Perforated pipe diameter
Perforated pipe length
Number of laterals
Stone type (if used)
Stone void ratio
Stone is free of fines?
3.83
in
0.16
in/hr
5.37
ft3/soc
17.85
f0sec
12.48
ft3/sec
26,311.00 1 ft3 V
26,408.00 ft3 ✓ OK for non -SR waters
I$
it,
It,
1t3
it3
G ua
7.00 in/hr
17.50 fmsl
0.06 days OK
15.00 in
7,500.00 —it
30
57
40
y (Y or N) OK
Form SW401-Infiltration Trench-Rev.4 Paris I. & II. Design Summary, Page 1 of 2

Permit No
Trench Elevations
Bottom elevation
Storageloverflow elevation
Top elevation
Trench Dimensions
Length gong dimension)
Width (short dimension)
Height (depth)
Additional Information
Maximum volume to each inlet into the trench?
Length of vegetative filter for overflow
Number of observation wells
Distance to structure
Distance from surface waters
Distance from water supply well(s)
Separation from impervious soil layer
Depth of naturally occuring soil above SHWT
Bottom covered with 4-in of clean sand?
Proposed drainage easement provided?
Capures all runoff at ultimate build -out?
Bypass provided for larger storms?
Trench wrapped with geotextile fabric?
Pretreatment device provided
19.50 fmsl OK
21.30 fmsl
21.80 fmsl
252.00
ft
67.00
ft
2.30
ft
OK
2.00
ac-in
OK
na
ft
OK
1
OK
>20
It
OK
>30
It
OK
>100
It
OK
2.00
ft
OK
4.50
ft
OK
na
(Y or N)
OK
na
(Y or N)
OK
y
(Y or N)
OK
Y
(Y or N)
OK
y
(Y or N)
OK
sumps
Form SW401-Infiltration Trench-Rev.4 Parts I. & II. Design Summary, Page 2 of 2

Permit
(ra be provided by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An Incomplete submittal package will
result In a request for additional information. This will delay final review and approval of the project.' Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet No.
R G 101 1. Plans (1' - 5(Y or larger) of the entire site showing:
Design at ultimate build -out,
Off -site drainage (if applicable),
Delineated drainage basins (include Rational C coefficient per basin),
Trench dimensions,
Pretreatment system,
High flow bypass system,
Maintenance access,
Proposed drainage easement and public right of way (ROW),
Overflow device, and
Boundaries of drainage easement.
2. Partial plan (1' = 39 or larger) and details for the infiltration trench showing:
- Bypass structure,
- Maintenance access,
- Basin bottom dimensions,
- Basin cross-section with benchmark for sediment cleanout,
Flow distribution detail for inflow,
Vegetated filter, and
Pretreatment device.
iCG 503 3. Section view of the infiltration trench (1' = 2U or larger) showing:
Pretreatment and treatment areas, and
Inlet and outlet structures.
9, if, Chits _ 4. A table of elevations, areas, incremental volumes & accumulated volumes to verify the volume provided.
c�'l0 5. A soils report that is based 'upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
01 6. A construction sequence that shows how the infltlration basin will be protected from sediment until the
entire drainage area is stabilized.
I r erg I;s•G 7. The supporting calculations.
FL. 8. A copy of the signed and notarized operation and maintenance (0&M) agreement.
r?,t.0. N l 9. A copy of the deed restrictions (if required).
Form SW401-Infiltration Tren&-Ray.4
Part In. Required Items Checklist, Page 1 of 1

OR4/11.
RECEIVED
Permit Number:
(to be provided by DWQ)
FFP Drainage Area Number:
Infiltration Trench?Operation and Maintenance Agreement
DWO.
I will keepa maintenande re"co� i$MP. This maintenance record will be kept in a
p
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected, repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public, and the removal efficiency of the BMP.
Important maintenance procedures:
- The drainage area of the infiltration trench will be carefully managed to reduce
the sediment load to the sand filter.
- The water level in the monitoring wells will be recorded once a month and after
every storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County).
The infiltration trench will be inspected once a quarter and within 24 hours after every
storm event greater than 1.0 inches (or 1.5 inches if in a Coastal County). Records of
operation and maintenance will be kept in a known set location and will be available
upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The grass filter strip or
Areas of bare soil and/or
Regrade the soil if necessary to
other pretreatment area
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Sediment has accumulated to
Search for the source of the
a depth of greater than six
sediment and remedy the problem if
inches.
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
The flow diversion
The structure is clogged.
Unclog the conveyance and dispose
structure (if applicable)
of any sediment off -site.
The structure is damaged.
Make any necessary repairs or
replace if damage is too large for
re air.
Form 5W401-Infiltration Trench O&M-Rev.3 Page 1 of 3

BMP element:
Potentialproblem:
How I will remediate theproblem:
The trench
Water is ponding on the
Remove the accumulated sediment
surface for more than 24
from the infiltration system and
hours after a storm.
dispose in a location that will not
impact a stream or the BMP.
The depth in the trench is
Remove the accumulated sediment
reduced to 75% of the original
from the infiltration system and
design depth.
dispose in a Iocation that will not
impact a stream or the BMP.
Grass or other plants are
Remove the plants, preferably by
growing on the surface of the
hand. If pesticide is used, wipe it on
trench,
the plants rather than spraying.
The observation well(s)
The water table is within one
Contact the DWQ Stormwater Unit
foot of the bottom of the
immediately at 919-733-5083.
system for a period of three
consecutive months.
The outflow pipe is clogged.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems,
The outflow pipe is damaged.
Repair or replace the pipe.
The emergency overflow
Erosion or other signs of
The emergency overflow berm will
berm
damage have occurred at the
be repaired or replaced if beyond
outlet.
repair.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage have occurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
Form SW401-Infiltration Trench O&M-Rev.3 Page 2 of 3

Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
Project name:P136 (corner of 4th and E St)
BMP drainage area number: I
U. W. RADFORD
Print name:George Radford Environmental Affairs Officer
By direction of the Commanding Officer
Title: Environmental Affairs Officer
Address:PSC Box 8006
0
S
C
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, �illi fm S , a Notary Public for the State of
/VC , County of do hereby certify that
(�;!Ow /(az4r-z personally appeared before me this
9 day of Atc4rg O&A, and acknowledge the due
execution of the forgoing infiltration trench maintenance requirements. Witness my hand
and official seal,
0� , IN II L L
_ NOTARY
PUBLIC
f►T COUP\\
�tlt11114+��
SEAL
My commission expires a 0/5
Form SW401-Infiltration Trench O&M-Rev.3
Page 3 of 3