HomeMy WebLinkAboutSW7091214_CURRENT PERMIT_20210709STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW JdZ42Z�
DOC TYPE
CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
,�a� (D -(()1
YYYYMMDD
ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
BRIAN WRENN
Director
Axelson Properties, LLC
Attention: Thomas J. Axelson, D.C.
411 Emmen Road
New Bern, NC 28562
NORTH CAROLINA
Environmental Quality
July 9, 2021
Subject: Stormwater Permit No. SW7091214 Renewal
Axelson Chiropractic
High Density Project
Craven County
Dear Dr. Axelson:
The Washington Regional Office received a Stormwater Management Permit
Application for renewal of the subject permit on June 10, 2021. Staff review of the
application has determined that the permit can be reissued. We are forwarding Permit
No. SV 7091214 dated July 9, 2021, for the continued operation of the existing sand
filter system.
This permit, upon its effective date, will replace all previous State Stormwater permits for
this project. This permit shall be effective from December 31, 2021, until December 30,
2029, and shall be subject to the conditions and limitations as specified therein and does
not supercede 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 (252) 948-3923.
Sincerely,
-4 �
Roger K. Thorpe
Environmental Engineer
DE— North Carolina Department of Environmental Quality I Division of Energy. Mineral 3rd Land Resources
Washington Regional Offire 1 943 Washington Square Mall I Washington. North Carolina 27889
m\V/— 352.946,6+31
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
Axelson Properties, LLC
Axel Chiropractic
Located at 901 Newman Road, New Bern, NC
Craven County
FOR THE
construction, operation and maintenance of one closed sand filter in compliance with
the provisions of 15A NCAC 2H .1000 (hereafter referred to as the "stormwaterrules')
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 December 31, 2021, until December 30, 2029, 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 25,372 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.
5. The runoff from all built -upon area within the permitted drainage area of this project
must be directed into the permitted stormwater control system.
�� North Carolina Department of Env it Quautv Division of Energy, Wne:al and Land resources
Washington Regional Office 943 Washingrcn Square Hall ! Washington North Carolina'7889
000"" 2529.16.u481
7
2.
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 permitted for the sand filter and must be
provided and maintained at design conditions:
a. Drainage Area, ft2:
b. Total Impervious Surfaces, ft2:
C. Design Storm, inches:
d. Design Volume, ft3:
e. Adjusted Water Quality Volume, ft3:
f. Provided Storage Volume, ft3:
g. Sediment Chamber Surface Area, ft2:
h. Sand Chamber Surface Area, ft2:
i. Predevelopment 1 year 24 hour:
j. Post -development 1 year 24 hour:
k. Top / Bypass Weir Elevation, FMSL:
I. Bottom of Sand Filter Elevation, FMSL
M. Seasonal High -Water Table, FMSL:
n. Receiving Stream/River Basin:
o. Stream Index Number:
P. Classification of Water Body:
II. SCHEDULE OF COMPLIANCE
35,268
25,372
1.50
3,075
2,306
3,071
567(L'xW)
1,080 �L' x W')
1.35 ft /s
0.50 ft3/s
23.5
23.5
18.5
Trent River/ Neuse River Basin
27-101-(39)
"SB. 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.
During construction, erosion shall be kept to a minimum and any eroded areas of
the system will be repaired immediately.
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.
�� North Carolina Depaitrrurtof Envitcnmentai Quality Division of Energy. Mineral at.d Land Resources
Washington Regional Office : 043 Washington>quare Mall Washington. North Carolina 21880
4. Records of maintenance activities must be kept for each permitted SCM. The
reports will indicate the date, activity, name of person performing the work and
what actions were taken.
5. The permittee shall submit to the Division an annual summary report of the
maintenance and inspection records for each SCM. The report shall summarize
the inspection dates, results of the inspections, and the maintenance work
performed at each inspection.
6. 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.
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.
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.
Access to the stormwater facilities shall be maintained via appropriate easements
at all times.
10. 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.
11. The permittee shall submit final site layout and grading plans for any permitted
future areas shown on the approved plans, prior to construction.
® North Carolina Department of Environmental Quality I Division of Energy. Mineral and Land Resources
Washington Regional Office 1 0-13 Washington Square Hall I Washington, North Carolina 27889
252.o•16.6,181
12. A copy of the approved plans and specifications shall be maintained on file by the
Permittee at all times.
13. 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 any 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.
—E No, t'h Carolina Department of Environmental Quality ; Division of Energy, Mineral and Land Resources
Washington Regional Office 14a3 Washington Square Mail I Washington. North Carolina 2788n
Yn an..n ra.in.mvawi�,� 252.g4h.6481
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 December 31, 2021, until December 30, 2029.
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 9 th day of July 2021.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
�1
For
Brian Wrenn, Director
Division of Energy, Mineral and Land Resources
By Authority of the Environmental Management Commission
Permit Number SW7091214
— North Carolina Department of Environmental Quality ! Division of energy. Mineral and Land Resources
Washington Regional Office ! q43 W'ashingron Square Stall I Washington, North Carolina 2788a
DEMLR USE ONLY
Date Received Fee Paid Permit Number
(Q(JIiQ'Z I 4S(0s.oz, SW-1,09IsILJ
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.
A. PROJECT INFORMATION
1. State Stormwater Permit Number:
<
LA
2. Project name: 0"
3. Project street address: " 10� t� l N [ t c1
City: �w E) � 1\) C- County:
4. What, if any, changes have been made to the project as permitted?
ZIP : to =-
If the project has changed from the original approved plans, please complete SWU-101 fora Major
Modification or Minor Modification Application form available at: https://dea.nc.gov/about/divisions/energy-
mineral-Ian d-resources/energy-mi neral-land-ruleslstormwater-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., h>fti)s //deg.nc.gov/about/divisions/energy-mineral-land-resources/
enerov-mineral-land-rules/stormwater-oroaram/post-construction. State Stormwater Permits do not
1. Current Permit Holder's Company Name/Organization: NN &-\Scv� `, �, 1v ?Tckc+
2. Signing Official's Name: �� �w �< AXE \sue i� T-> C- -
3. Signing Official's Title:
4. Mailing Address: 411 l= Nnr nzo� Q<1
City: Q]Pry, TJc- State: �jC--ZIP
:
5. Street Address: ;S�D�I Q�lpwar`av" �1
City: I CY State: iJ(" ZIP: .2: Coa
6. Phone: (2S:a) W1 -9W* Email: 0kK0Xe Sow 0 vat ��• coy
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 HQW/ORW). Only applications packages that
include all required items listed below will be accepted and reviewed.
Initial each item below to indicate that the required information is provided in the application package:
kt- 1. A permit application processing fee of $505.00 payable to NCDEQ.
&.L�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. Sole proprietor, or
f. Letter of authorization signed by one of the signatories noted in a - e above authorizing the
signature of another entity.
U'_��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, condominium/
planned 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.
ZW�4 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
J 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.
a� (� 5. 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.
6. [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.
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). httos://www.sosnc.gov/online services/search/by title/
Business Registration
Stormwaler Permit Renewal Application Form Page 2 of 3 May 11, 2018
D. PERMITTEE'S CERTIFICATION
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 information provided on this permit renewal application is, to the best of my
knowledge, corr ct and complete.
Signature: Date: ^^t0 E aoa
NOTARIZATION:
1, _ � HJpJCKL-ey a Notary Public for the State of
NO2` P CAgztY )JQA County of zf2plyeAl , do hereby certify
that frslM/i S :S. A Xar�'�J personally appeared before me
day of 31Ah16 209-1 and acknowledge the due
ce-6aiio-n.. rgoing instrument. Witness my hand and official seal,
dOTAR
:Z=;Z.
'-mc'•. AVB1.�G rP�c
My commission expires Q3
Stormwater Permit Renewal Application Form Page 3 of 3 May 11, 2018
F co
_;
State Stormwater Management Systems
Permit No. SW7091214
- .A Ott �. sp � PR r1lt� r1 K, I.hta
Stormwater Permit No. SW7091 b 14
Craven County
Designer's Certification
APR 2 0 2011
14
I, .c`✓N4�`� ��i��R, as a duly registered 16'04'*Z6-Cw4L-- in the
State of North Carolina, laving been authorized to observe (periodically/ weekly/ full time)
the construction of the project,
AXtt.gOwr �aotearMr%4 % , %.%.C.
(Project)
for 'r"1 ^% Ajeda.t s#%w - (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the to
construction such that the construction was observed to be built within substantial
compliance and. intent of the approved plans and specifications.
The checklist of items on page 2 of this form is included in the Certification. .
Noted deviations from approved plans and"`specification:
FAX !.�! Next D
`Qo u 1POC
Signature_
Registration mber 'a132�j
Date '4'
S"W�w1y
❑ COMPLETED
SL:AL
Page 6 of 7
State Stormwater Management Systems
Permit No. SW70912 111_
Certification Requirements:
jot1.
The drainage area to the system contains approximately the permitted
acreage.
r2.
The drainage area to the system contains no more than the permitted
amount of built -upon area.
All the built -upon area associated with the project is graded such that the
runoff drains to the system.
All roof drains are located such that the runoff is directed into the system.
The outlet/bypass structure elevations are per the approved plan.
The outlet structure is located per the approved plans.
AA 7.
Trash rack is provided on the outlettbypass structure.
All slopes are grassed with permanent vegetation.
Vegetated slopes are no steeper than 3:1.
�he
inlets are located per the approved plans and do not cause short-
ircuiting of the system.
he permitted amounts of surface area and/or volume have been
Pr provided.
-dope,
2. Required drawdown devices are correctly sized per the approved plans.
13. All required design depths are provided.
All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
The required system dimensions are provided
40,07
cc: NCDENR-DWQ Regional Office
Craven County Building Inspections
Page 7 of 7
Permit Number.sw 7acT I?_I+
(to be provided by OWQ)
' Red triangles at the upper right hand comer indicate design comments
Please complete the yellow shaded items.
2 F �WWAr\\f
�O9
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
SAND FILTER SUPPLEMENT
This form must be fitted out on fine, printed and submitted with all of the required information.
Make sure to also fill out and submit the Required Items Checklist (Section lll) and the 18M Agreement (Section IV)
11. PROJECT INFORMATION
Project name
Axelson Office Complex
Contact name
Sue Sayger,PE
Phone number
252 349-5803
Date
December 16, 2009
Drainage area number
1
II.DESIGN INFORMATION
Site Characteristics
Drainage area (AD)
Impervious area
% Impervious (Ir
Design rainfall depth (Ro)
Peak Flow Calculations
1-yr, 24-hr runoff depth
1-yr, 24-hr intensity
Pre -development 1-yr, 24-hr runoff
Post -development 1-yr. 24-hr runoff
Pre/Post 1-yr, 24-hr peak control
Storage Volume
Design volume (WOV)
Adjusted water quality volume (WOVW
Volume contained in the sedimentation basin and on top of the sand filter
Maximum head on the sedimentation basin and sand filter (hm F1H)
Average head on the sedimentation basin and sand filter (hA)
Runoff Coefficient (Rv)
Type of Sand Filter
Open sand filter?
If this is an open sand filter: The clearance between the bottom of the sand
filter and the SHWT (dsawr)
Closedfpre-cast sand filter?
If this is a closed sand filter: The clearance between the bottom of the sand
filter and the SHWT (dsHwr)
If this is a closed, underground closed sand filter: The clearance between
the surface of the sand filter and the bottom of the roof of the underground
structure (dspj
35,268.00 ft' >r/ OK
25.372.00 f>z 1�
71.9% % y
1.50 in
3.90 in
in/hr
1.35 ft3/sec
0.50 ft3/sec
-0.85 ft3/sec
3,075.00 ft3 V/
2,306.25 ft3 ✓ OK
3,294.00 1/
2.00 It 1/ OK
1.00 It OK
0.70 (unidess)
y YorN
4.00 It
YorN
Form SW401Sand Filter-Rm.4 Parts I and II. Project Design Summary, Page 1 of 1
Sedimentation Basin
Permit Number:
(to be provided by NWQ)
Surface area of sedimentation basin (As)
Sand Filter
Surface area of sand filter (AF)
Depth of the sand media filter bed (dr)
Coefficient of permeability for the sand filter (k)
Time to drain the sand filter (t)
Time to drain the sand filter (t)
Additional Information
Does volume in excess of the design volume bypass the sand filter?
Is an off-line flow -splitting device used?
Does volume in excess of the design volume flow evenly distributed through a
vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow?
Is the BMP located at least 30ft from surface waters (5011 if SA waters)?
If not a closed bottom, is BMP located at least 10011 from water supply wells?
Are the vegetated side slopes equal to or less than 3:1
Is the BMP located in a recorded drainage easement with a recorded access
easement to a public Right of Way (ROW)?
What is the width of the sedimentation chamber/forebay (W,,,)?
What is the depth of sand over the outlet pipe?
Sedimentation
7mm6er
l or Fort•bov)
Flow
In2:iln Soil
ft
A's.a
Figure 1: Open Sand Filter
OK. Meets minimum, but may need to be increased to
1,080.00 fe contain the required volume if error under Storage
Volume section.
OK. Meets minimum, but may need to be increased to
567.00 ft contain the required volume if error under Storage
Volume section.
1.50 fit
3.50 (fl/day)
42.00 hours Insufficient drainage time.
1.75 days
y YorN OK
n Y or N Insufficient flow splitter.
y YorN OK
.7U.UU m
y YorN
OK
y YorN
OK
y YorN
OK
y YorN
OK
y YorN
OK
S;wd Filter
Chamber
/'-�\
i'•ntlet Pipe
ITish R'nl. r'1';d de
30.00 It
1.50 R
Ilpipr � [IF
i� rt [ rlSNwrr
OK
OK
Form SW401Sand Filter-Rev.4 Parts I and II. Project Design Summary, Page 2 of 3
Permit No.
(to be provided by DWQ)
{III. REQUIRED ITEMS CHECKLIST I
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.
Initials Pagel Plan
Sheet No.
24
-sp-t
1. Plans (1' - 50' or larger) of the entire site with labeled drainage area boundaries
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber
Maintenance access,
Flow splitting device,
Proposed drainage easement and public right of way (ROW),
Design at ultimate build -out,
Off -site drainage (if applicable), and
Boundaries of drainage easement.
Z 2. Plan details (1' = 50' or larger) for the sand filter showing:
- System dimensions (length, width, and depth) for both the sedimentation chamber and the filter
chamber
- Maintenance access,
- Flo,*splitting device,
- Propowd drainage easement and public right of way (ROW),
- DesigP at ultimate build -out,
- Off-sije drainage (if applicable), and
- Boundaries of drainage easement.
'SP Z 3. Section view of the sand filter (1' = 20' or larger) showing:
- Depth(s) of the sedimentation chamber and sand filter chamber,
- Depth of sand filter media
- Connection between the sedimentation chamber and the sand filter chamber,
- SHWT level(s)
- Outlet pipe, and
- Clearance from the surface of the sand filter to the bottom of the roof of the underground structure (if
applicable)
h? 1`1140 4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
7 results of the soils report must be verified in the field by DWQ, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information.
407
-L`# 5. Supporting calculations (including drainage calculations)
7H•ff. 6. Signed and notarized operation and maintenance (0&M) agreement
tI— 7. A copy of the deed restrictions (if required).
Form SW401-Sand Filter-Rev.4 Part III, Page 1 of 1
` F Date: tvvmos
Project MCCARTHY
c , ... .
'.�9A, fl. S?ti�;,•°-'- FBCIIIIy Sand filter
Drainage Area. Impervous % Area-bldgs-
Drelnage area number Drainage Area-sq ft Ac Area _sq ft' Impervious Sq ft
1r- —35268 O.BtI 25372 0719405894,] 4213
Design Requirements
�0.69]485124 �Rpervi
25372 TOW area
are ft)
0 80964/873 Tole) area area ACRES
Read storage
1.5" SIMPLE METt10D
W75 WOV=Rv'1.5"Ad per SIMPLE method
2306 WOV adj `/
W71 vqv provid
drawdcym
O=(k)'kh8
k
3.50 Way
0 draw down refs with Ave head, l.SdPM
2.33 Way
D over sand filter surface area
1323 ftA3lday
WOV Drava. Sme
1.74 day
WqV Dre dove, 1me(hours)
41,83 hours
Grain discharge
0.0153125 cis
Car.(underdrain umety)
1.1 ch
Future and
Area-
streetsSgFt Area-bldgs-Ac Area-streets-Ac
21159 0.098717172 0 M5743602
VOLUME CALCULATIONS
ELEV
DELTA AREA
LENGTH
WIDTH
DELTA ELEV
AREA
INCREMNTAL
VOLUME
CUMMULATNE
VOLUME
25.00
24
22
25,00
23S
38
30
18
38
27
30
24
12
30
21
1.00
2
1,50
1080
720
216
1080
567
we
938
0
1235
0
3071
2171
1235
1235
0
Permit Number:
(to be provided by
Drainage Area Number:
Sand Filter Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a 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 will be carefully managed to reduce the sediment load to the sand filter.
— The sedimentation chamber or forebay will be cleaned out whenever sediment depth exceeds
six inches.
— Once a year, sand media will be skimmed.
— The sand filter media will be replaced whenever it fails to function properly after maintenance.
The sand filter will be inspected quarterly 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: J
Potential problem:
How I will remediate the problem:
Entire BMP
Trash/debris is present.
Remove the trash/debris.
Adjacent pavement (if
Sediment is present on the
Sweep or vacuum the sediment as soon as
applicable)
pavementsurface.
possible.
Perimeter of sand filter
Areas of bare soil and/or erosive
Regrade the soil if necessary to remove the
gullies have formed.
gully, and then plant a ground cover and
water until it is established. Provide lime
and a one-time fertilizer application.
Vegetation is too short or too long.
Maintain vegetation at an appropriate
height.
Flow diversion structure
The structure is clogged.
Unclog the conveyance and dispose of any
sediment offsite.
The structure is damaged.
Make any necessary repairs or replace if
damage is too large for repair.
Forebay or pretreatment area
Sediment has accumulated to a
Search for the source of the sediment and
depth of greater than six inches.
remedy the problem if possible. Remove
the sediment and stabilize or dispose of it
in a location where it will not cause
impacts to streams or the BMP.
Erosion has occurred.
Provide additional erosion protection such
as reinforced turf matting or riprap if
needed to prevent future erosion
problems.
Weeds are present.
Remove the weeds, preferably by hand. If
a pesticide is used, wipe it on the plants
rather than s ra in .
BMP element:
Potentialproblem:
How I will remediate theproblem:
Filter bed and underdrain
Water is ponding on the surface for
Check to see if the collector system is
collection system
more than 24 hours after a storm.
clogged and Flush if necessary. If water
still ponds, remove the top few inches of
filter bed media and replace. If water still
ponds, then consult an expert.
Outlet device
Clogging has occurred.
Clean out the outlet device. Dispose of the
sediment offsite.
The outlet device is damaged
Repair or replace the outlet device.
Receiving water
Erosion or other signs of damage
Contact the NC Division of Water Quality
have occurred at the outlet.
401 Oversight Unit at 919-733-1786.
C,.-.., Q %V A n l Q—A C:I+,,. n V. n e D.... A' nnnc,....17 n...,,. 7 -f' 4
Permit Number:
(Io 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:Axelson Properties Llc
BMP drainage area number:
Print name:Thomas Axelson
Title: Registered agent/owner
Address:3334 Wellons Blvd, New Bern, NC 28560
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, e %_ . Nj' TP✓, a Notary Public for the State of
County of CerA l-i -o- i,,- do hereby certify that
O Mety S 1. 1 Xco/ < e3 h personally appeared before me this _� day of
dQt 3 and acknowledge the due execution of the forgoing sand filter
maintenance requirements.
SEAL
Witness my hand and official seal, ��ja'v
"�
My commission expires —Z - -" - / Z
c.,— cwn n, 0.._d c:]..... nano o,.., n nnnac....17 o.--'I —f'2
-- i
High Density Commercial Subdivisions
Deed Restrictions & Protective Convenances
In accordance with Title 15 NCAC 2H.1000 and S.L. 2006-246, the Management Regulations, deed
restrictions and protective covenants are required for High Density Commercial Subdivisions where
lots will be subdivided and sold and runoff will be treated in an engineered stormwater control facility.
Deed restrictions and protective covenants are necessary to ensure that the development maintains a
built -upon area consistent with the design criteria used to size the stormwater control facility.
I, Thomas Axelson acknowledge, affirm and agree by my signature below, that I will cause the
following deed restrictions and covenants to be recorded prior to the sale of any lot within the project
known as Axelson Properties LLC
The following covenants are intended to ensure ongoing compliance with State Stormwater
Management Permit Number as issued by the Division of Water Quality
under the Stormwater Management Regulations.
2. The State of North Carolina is made a beneficiary of these covenants to the extent necessary to
maintain compliance with the stormwater management permit.
3. These covenants are to run with the land and be binding on all persons and parties claiming
under them.
4. The covenants pertaining to stormwater may not be altered or rescinded without the express
written consent of the State of North Carolina, Division of Water Quality.
5. Alteration of the drainage as shown on the approved plan may not take place without the
concurrence of the Division of Water Quality.
6. The maximum allowable built -upon area per lot is 25, 372. square feet.
*Note: If the BUA per lot varies, please substitute the following statement for the one above and
provide a complete listing of the proposed BUA for each lot:
The maximum built -upon area per lot, in square feet, is as listed below:
Lot # BUA Lot # BUA Lot # BUA Lot # BUA
This allotted amount includes any built -upon area constructed within the lot property boundaries,
and that portion of the right-of-way between the front lot line and the edge of the pavement. Built
upon area includes, but is not limited to, structures, asphalt, concrete, gravel, brick, stone, slate,
coquina and packing areas, but does not include raised, open wood decking, or the water
surface of swimming pools.
7. All runoff from the built -upon areas on the lot must drain into the permitted system. This may be
accomplished through a variety of means including roof drain gutters which drain to the street,
grading the lot to drain toward the street, or grading perimeter swales to collect the lot runoff
and directing them into a component of the stormwater collection system. Lots that will naturally
drain into the system are not required to provide these additional measures.
8. The owner of each lot, whose ownership is not retained by the permittee, is required to submit a
separate stormwater permit application to the Division of Water Quality and receive a permit
prior to construction.
9. The project and each lot will maintain a 30** foot wide vegetated buffer between all impervious
areas and surface waters.
**50 foot for projects located in the 20 coastal counties.
C-- Moor I 0...• 0 n9l1l Onnn 0--- i _r )
High Density Commercial Subdivisions
Deed Restrictions & Protective Convenances
I, a ic0-k o. ; P / i c- ; 4 e r , a Notary Public in the
State of v AIC County of ` jr c - u e " ,
do hereby certify that 7TAAM G_!C b} : A e / So h personally appeared
before me this the — " day of pc n , 209, and acknowledge
the due execution of the foregoing instrument. Witness my hand and official seal,
SEAL
SignatuurOF�rls�—�
My Commission expires oZ
r,,— Moor I D-" n ncki,.,nnnn M--- 1) -f )