SW8930619_COMPLIANCE_20000802

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW P:5 �/GI'
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
I�D COMPLIANCE EVALUATION INSPECTION
C
DOC DATE
YYYYMMDD

Permit No. Su)3 1 i 3u
(to be provided by DWQ)
State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form may be photocopied for use as an original
DWQ Stormwater Management Plan Review:
A complete stormwater management plan submittal includes an application form, a wet detention basin
supplement for each basin, design calculations, and plans and specifications showing all basin and outlet
structure details.
I. PROJECT INFORMATION
r
Project Name:--=du�'► I e2 S ef'r1 I1
"� + 1'1 i St(;I"C (;{ e„
Contact Person: G. �� Phone Number: (910 ) 3-N— G-3b(a
For projects with multiple basins, specify which basin this worksheet applies to:
elevations
Basin Bottom Elevation
i G, ft.
(floor of the basin)
Permanent Pool Elevation
20,7
ft.
(elevation of the orifice)
Temporary Pool Elevation
Z I •
ft.
(elevation of the discharge structure overflow)
areas
Permanent Pool Surface Area 6J 71
sq. ft.
(water surface area at the orifice elevation)
Drainage Area
ac.
(on -site and off -site drainage to the basin)
Impervious Area
E31'308
ac. 2 �-
(on -,rite and off -site drainage to the basin)
volumes
Permanent Pool Volume
OiA
cu, ft.
(combined volume of main basin and forebay)
Temporary Pool Volume
6 330
cu. ft.
(volume detained above the permanent pool)
Forebay Volume
_ 0 LA
cu. ft.
(approximately 20% of total volume)
Other parameters
SA/DA1 1 CIO (surface area to drainage area ratio from DWQ table)
Diameter of Orifice in. (2 to 5 day temporary pool draw -down required)
Design Rainfall i in.
Design TSS Removal 2 % (minimum 85% required)
Focm SWU-102 Rev 3.99 Paae I of 4

Footnotes:
1 When using the Division SA/DA tables, the correct SA/DA ratio for permanent pool sizing should be computed based upon the
actual impervious % and permanent pool depth. Linear interpolation should be employed to determine the correct value for non-
standard table entries.
2 In the 20 coastal counties, the requirement for a vegetative filter may be waived if the wet detention basin is designed to provide
90% TSS removal. The NCDENR BMP manual provides design tables for both 85% TSS removal and 90% TSS removal.
II. REQUIRED ITEMS CHECKLIST
The following checklist outlines design requirements per the Stormwater Best Management Practices Manual
(N.C. Department of Environment, Health and Natural Resources, February 1999) and Administrative Code
Section: 15 A NCAC 2H .1008.
Initial in the space provided to indicate the following design requirements have been met and supporting
documentation is attached. If the applicant has designated an agent in the Stormwater Management Permit
Application Form, the agent may initial below. If a requirement has not been met, attach justification.
Applicants Initials
a. The permanent pool depth is between 3 and 6 feet (required minimum of 3 feet).
NIA b. The forebay volume is approximately equal to 20% of the basin volume.
c. The temporary pool controls runoff from the design storm event.
d. The temporary pool draws down in 2 to 5 days.
qA e. If required, a 30-foot vegetative filter is provided at the outlet (include non -erosive flow
calculations)
f. The basin length to width ratio is greater than 3:1.
g. The basin side slopes above the permanent pool are no steeper than 3:1.
N�A h. A submerged and vegetated perimeter shelf with a slope of 6:1 or less (show detail).
i. Vegetative cover above the permanent pool elevation is specified.
j. A trash rack or similar device is provided for both the overflow and orifice.
01A k. A recorded drainage easement is provided for each basin including access to nearest right-
of-way.
A 1. If the basin is used for sediment and erosion control during construction, clean out of the
basin is specified prior to use as a wet detention basin.
✓ m. A mechanism is specified which will drain the basin for maintenance or an emergency.
III. WET DETENTION BASIN OPERATION AND MAINTENANCE AGREEMENT
The wet detention basin system is defined as the wet detention basin, pretreatment including forebays and the
vegetated filter if one is provided.
This system (check one) 0 does 0 does not incorporate a vegetated filter at the outlet.
This system (check one) 0 does 0 does not incorporate pretreatment other than a forebay.
Form SWU-102 Rev 3.99 Page 2 of 4

r4k
Maintenance activities shall be performed as follows:
After every significant runoff producing rainfall event and at least monthly:
a. Inspect the wet detention basin system for sediment accumulation, erosion, trash accumulation,
vegetated cover, and general condition.
b. Check and clear the orifice of any obstructions such that drawdown of the temporary pool occurs
within 2 to 5 days as designed.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative cover, mow vegetative
cover to maintain a maximum height of six inches, and remove trash as needed.
3. Inspect and repair the collection system (i.e. catch basins, piping, swales, riprap, etc.) quarterly to
maintain proper functioning.
4. Remove accumulated sediment from the wet detention basin system semi-annually or when depth is
reduced to 75% of the original design depth (see diagram below). Removed sediment shall be disposed
of in an appropriate manner and shall be handled in a manner that will not adversely impact water quality
(i.e. stockpiling near a wet detention basin or stream, etc.).
The measuring device used to determine the sediment elevation shall be such that it will give an accurate
depth reading and not readily penetrate into accumulated sediments.
When the permanent pool depth reads 3 feet in the main pond, the sediment shall be removed.
When the permanent pool depth reads feet in the forebay, the sediment shall be removed.
BASIN DIAGRAM
ill in the blanks)
Permanent Pool Elevation 2U.T
Sediment Re oval El. iJ A 75 a
-------------- -- Sediment Removal Elevation 75%
Bottom Ele ation N A % -----------------------------------------.---------
Bottom Elevation 1 (0 25%
FOREBAY MAIN POND
5. Remove cattails and other indigenous wetland plants when they cover 50% of the basin surface. These
plants shall be encouraged to grow along the vegetated shelf and forebay berm.
6. If the basin must be drained for an emergency or to perform maintenance, the flushing of sediment
through the emergency drain shall be minimized to the maximum extent practical.
Form SWU-102 Rev 3.99 Paae 3 of 4

r
7. All components of the wet detention basin system shall be maintained in good working order.
I acknowledge and agree by my signature below that I am responsible for the performance of the seven
maintenance procedures listed above. 1 agree to notify DWQ of any problems with the system or prior to any
changes to the system or responsible party.
Print name: '5 G 'ziol e
Title: O eV Ale ^
Address: Tu ��X Z4�Zd J N.-C' 2 Fy6'/
Phone: 3 I-Llo f
Signature:✓o�_ _/Paz— _
Date:_
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.
' u�N S -b g i=i 'aA.a , a Notary Public for the State of &aL&,
County of r UA 9W 1 e i(_ , do hereby certify that �� - CL� e
personally appeared before me this day of A VA uk_. - air , and acknowledge the due
} :;execution of, the forgoing wet detention basin maintenance requirements. Witness my hand and official seal,
,
OFFICIAL SEAL -
S RUTH S. BARFIELD r' {
r; riot arryy Public - North Carolina
BRUNSWICK COUNTY ti
My Commission Expires
'hr1L 'Yi.�-��.-ilAl.r�,s..itl.reY.':F:1�e`.21::`�-�G'J.!✓1LW:r.:.r .. .anr:l=:r••'-'+/
- -SEAL
My commission expires -31 alp t o-
Form SWU-102 Rev 3.99 Page 4 of 4

State of North Carolina
Department of Environment
and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Division of Water Quality
July 27, 2000
Mr. Ezra Dale
Southeastern Mini Storage
PO Box 157
Leland, NC 28451
Subject: COMPLIANCE INSPECTION
Southeastern Mini Storage
Stormwater Project No. SW8 930619
Brunswick County
Dear Mr. Dale:
Please find attached a copy ofthe completed form entitled "Stormwater Compliance Inspection Report". The
report summarizes the findings of a recent inspection of the project's stormwater controls conducted on June 26,
2000 to determine compliance with Stormwater Permit Number SW8 930619 issued on July 8, 1993.
A summary of the findings and comments are noted under Section 6 of the report. Please inform this Office
in writing before July 30, 2000 of the specific actions that will be undertaken and the time frame required to correct
the deficiencies. Failure to provide the requested information, when required, may initiate enforcement action. If
you have any questions please contact me at the Wilmington Regional Office, telephone number [phone].
Sincerely,
Linda Lewis
Environmental Engineer
RSS/arl: S:1WQSISTORMWATIINSPECT1930619.JUL
cc: Ward Andrews, P.E.
Central Files
Wilmington Regional Office
127 Cardinal Dr. Ext., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer 50%u recycled110% post -consumer paper

STORMWATER COMPLIANCE INSPECTION REPORT
1. Project Name: Southeastern Mini Storage
Project Number: SW8 930619 Control Measure: Viet detention pond
Water Body: Brunswick River Classification: SC
Directions to site, address: Located behind the Leland Shopping Center. Turn right onto Hwy 133
at the first exit off Hwy 17/74/76 over the bridge in Brunswick County.
Project is on the left.
2. Inspection Date: June 26, 2000
Weather Conditions: sunny and hot
�. Compliance Issues:
a. There appears to be some offsite runoff from the neighboring BEMC substation. Several areas
of the bank were slightly eroded from the runoff entering at that location.
b. The required Engineer's Certification has still not been received.
4. Required Actions:
a. Please investigate the offsite runoff question from the BEMC site. Either reroute that drainage
or account for it in the pond.
b. Please repair the eroded banks and reseed.
C. Please submit the required Engineer's Certification.
d. The original permit was issued to Ms. Phyllis Smith. Since you are the new owner, please
complete and return the enclosed permit name/ownership transfer request.
Inspector: Linda Lewis A4111
Water QualityyWilmington Regional Office/[phone]
RSS/arl: S:1WQSISTORMWATIINSPECT1930619.JUL

State of North Carolina
Department of Environment
and Natural Resources
N ilming,ton Regional Office
,James B. Hunt, ,lr., Governor
Bill Holman, Secretary
Division of Water Quality
June 30, 2000
Ms. Phyllis S. Smith
Southeastern Mini Storage
I'O Box 4046
Wilmington, NC 28406
ram•
N C am )`E N 0 Kv"
NORTH CAROLINA DEPARTMENT OF
(_NV{R'JNMEi:r AND NATURAL RE5ouRcr-s
Subject: COMPLIANCE INSPECTION
Southeastern Mini StoraLle
Stormwater Project No. SV 18 930619
Brunswick County
Dear Ms. Smith:
Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection Report".
The report summarizes the findings of a recent inspection of the project's stormwater controls conducted on
June 26, 2000 to determine compliance with Stormwater Permit Number SV418 930619 issued on July 8, 1993.
A summary of the findin�as and comments are noted under Section 6 of:theyreport. Please inform this
Office in writing before July 30, 2000 of the specific actions that will be undertaken and the time frame required
to correct the deficiencies. Failure to provide the requested information, when required. may initiate
enforcement action. If you have any questions please contact me at the Wilmin(,ton Ret,�onal Office, telephone
number [phone].
Sincerely,
,rl) .9,417, tom' �C tly
Linda Lewis
Environmental Engineer
'.S5iaN., S:\V7(,C\STCRM"iIAT1INSPf,CT�930619.JUN
cc: Ward Andrews, P.E.
Central Files
VGliimington Regional Office
127 Cardinn] Dr. rsxt., Wilmington, North Carolina 28405 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer S0% recycled/10"/ ,post -consumer paper

STORNINVATER COMPLIANCE INSPEC'nON REVOIrr
1. Project Name: Southeastern Mini Storage
Project Number: SWS 930619 Control Measure: Wet detention pond
Water Body: Brunswick River Classification: SC
Directions to site, address: Located behind the Leland Shopping Center, off Hwy 133 at the first exit
off Hvvry 17/74/76 over the bridge in Brunswick County.
2. Inspection Date: .tune 26, 2000
Weather Conditions: sunny and hot
a. Compliance Issues:
a. There appears to be some offsite runoff from the neighboring BENIC substation. Several aeras of
the bank were slightly eroded from the runoff entering at that location.
b. The required Engineer's Certification has still not been received.
4. Required Actions:
a. Please investigate the offsite runoff question from the BEMC site. Either reroute that drainage or
account for it in the pond.
b. Please submit the required Engineer's Certification.
Inspector: Linda Lewis t
Water Quality/Wilmington Rcgional Office/[phone]
RSS/arl: S:IWQSIS'rORMWATIINSPECT1930619..iUI\T

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary Regional Manager
January 11, - 1994
Mrs. Phyllis Smith
Post Office Box 4046
Wilmington, North Carolina 28406
Subject: COMPLIANCE INSPECTION
Smith Mini Warehouses
Stormwater Project No. 930619
Brunswick County
Dear Mrs. Smith:
Please find attached a copy of the completed form entitled "Stormwater Compliance Inspection
Report". The report summarizes the findings of a recent inspection of the project's stormwater controls
conducted on December 16, 1993 to determine compliance with Stormwater Certification Number 930619
issued on July 8, 1993.
A summary of the findings and comments are noted under Section 6 of the report. Appropriate
action, if required, should be completed by February 11, 1994. Please inform this Office by letter when
required action is completed. If you have any questions please contact me at the Wilmington Regional
Office, telephone number [phone].
Sincerely,
Linda Lewis
Environmental Engineer
DAlarl: S:IWQSISTORMWATUNSPECT1930619.JAN
cc: Ward Andrews, P.E.
Central Files
Bradley Bennett
Linda Lewis
127 Cardinal Drive Extension, 'Wilmington, N.C. 29405-3845 • Telephone [phone] •Fax [phone]
An Equal Opportunity Affirntative Action Employer

' STORMWATER COMPL%ANCE INSPECTION REPORT
1. Project Name: Smith Mini Warehouses
Project Number: 930619 Control Measure: 90 % Detention Pond
Water Body: Brunswick River Classification: SC
Directions to site, address: Off US 17,74,76, behind Leland Landing Shopping Center
2. Inspection Date: December 16, 1993
Weather Conditions: Sunny
3. Comparison of Approved plans vs. As -Built: See comments below
4. Maintenance Problems:
1. High pond level, possibly due to backed up outlet ditch.
2. Trash has accumulated in the trash rack.
3. Several areas of the pond slopes are eroded.
5. PE Certification Received? NO Deed Restrictions Received? NIA
6. Comments:
1. Investigate the high pond level and correct.
2. Remove trash on a monthly basis, per the approved O & M Plan.
3. Repair eroded areas.
4. Seed pond with permanent vegetation.
5. The catch basins are not in place.
6. Asphalt rolled curbing is not in place.
7. The required Engineer's Certification has not been received.
Inspector: Linda Lewis
Water Quality/Wilmington Regional Office/[phone]
DA/arl: S:IWQSISTORMWATIINSPECT1930619.JAN

State of North Carolina
Department of Environment, Health, and Natural Resources
Wilmington Regional Office
James B. Hunt, Jr., Governor DIVISION OF ENVIRONMENTAL MANAGEMENT Bob Jamieson
Jonathan B. Howes, Secretary Regional Manager
July 8, 1993
Mrs. Phyllis Smith
Post Office Box 4046
Wilmington, North Carolina 28406
Subject: CERTIFICATION OF COMPLIANCE
with Stormwater Regulations
Stormwater Project No. 930619
Smith Mini Warehouses
Brunswick County
Dear Mrs. Smith:
This Certification is pursuant to the application for the Smith Mini Warehouses received on June
30, 1993 in response to a request by this Office for submission of plans due to completion of construction
of this facility. Based on our review of the project plans and specifications, we have determined that the
Smith Mini Warehouses stormwater control system complies with the Stormwater Regulations set forth
in Title 15A NCAC 211.1003(i). The runoff will be treated in a detention pond sized to achieve 90%
reduction in Total Suspended Solids.
Any modification of the plans submitted to this Office or further, development of this site will
require an additional Stormwater Submittal/Modification and approval prior to initiation of construction.
Modifications include but are not limited to; project name changes, transfer of ownership, redesign of
built -upon surfaces, addition of built -upon surfaces, redesign or further subdivision of the project area.
This Certification shall be effective from the date of issuance until rescinded. The project shall
be constructed and maintained in accordance with the plans and specifications approved by the
Wilmington Regional Office. This Certification does not supersede any other permit or approval. The
developer is responsible for obtaining any and all permits and approvals necessary for the development
of this project. This could include the Division of Coastal Management under CAMA requirements, the
Division of Environmental Management. under Wetland 401 Water Quality Certification and/or a Dredge
and Fill Permit and/or a Sewer Extension/Collection Permit, U.S. Army Corps of Engineers 404 Wetland
Permit, NPDES Stormwater Permit if disturbing five acres or more, local County or Town Agency
permits under their local ordinances, or others that may be required.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

,1
Mrs. Smith
July 8, 1993
Stormwater Project No. 930619
A professional engineer must certify that the stormwater system has been installed in accordance
with the approved plans and specifications upon completion of construction. The attached certification
should be received by this Office within 30 days of completion of construction.
3900.
If you have any questions concerning this matter, please call Ms. Linda Lewis or me at (919) 395-
Sincerely,
Dave Adkins
Water Quality Supervisor
DA/arl: S:IWQSISTORMWATICERTIFIC1930619.JLL
cc: Mr. Ward Andrews, P.E.
Mr. Robert Tucker, Brunswick County Inspections
Bradley Bennett
Linda Lewis
Wilmington Regional Office
Central Files

WET DETENTION POND EVALUATION
Yes No The design storage is for the runoff from all impervious surfaces resulting from
t-inch of rainfall and is located above the pennanent pool.
2. Yes No The pennanent pool is designed for 90% total suspended solid (TSS) removal.
Therefore, no vegetative filter is required.
3. Yes No The runoff completely draws down to the pennanent pool in 5 days, but not less
than 2 days.
4. Yes No The mean depth of the pennanent pool is a minimum of 3 feet.
5. Yeti No The inlet structure is designed to minimize turbulence and short circuiting
6. Yes No An appropriate operation and maintenance plan has been provided for the
system.
7. Yes No THIS PROJECT MEETS THE STORMWATER CONTROL REQUIREMENTS
OF 15A NCAC 2H.1003 (g), (i), (k), and (1) (For Yes, 1 through 7 must all
be highlighted Yes.)
Brief Explanation: This detention pond is designed to remove 90% total suspended solids without the
aide of a vegetative filter.
DIVISION OF ENVIRONMENTAL MANAGEMENT SIGN -OFF
Wilmington Regional Office
B -JUL c{3
Date
Individual Evaluating Fonn/Plans
Date Regional Water Quality Supervisor
cc: Applicant/Bradley Bennett/arl/WiRO/CF

DETENTION POND REVIEW SKEET
DATE r/— S— 9 3
PROJECT NAME PlI(.1 rS Sm A 1-f on VV .-;�'eIW56 PROJECT NO. q 3U6011
THIS REVIEW IS IN RESPONSE TO INFORMATION RECEIVED jo/i e. `(c( 3
DRAINAGE BASIN er"Ua5('ujG1c ei M/zr- CLASS sc
IS A POND ABLE TO BE UTILIZED BASED ON CLASS AND/OR CHLORIDE RESULTS yes
SITE AREA] 33 �7(� 5T =
IMPERVIOUS AREA:
BUILDING
PAVEMENT/PARKING
WALKS, CONCRETE
OTHER
3.o&?$ 2c.
TOTAL -7 303 5T
GREEN AREAS DIRECTED TO POND:
INTERIOR ISLANDS
POND PERIMETER
OTHER
TOTAL
DA 5,0(080 % B/U Fj8 • &
SURFACE AREA CALCULATION:
33 3 oo 5f
45 . ao 3 s if
POND DEPTH .4 I TSS O Icy
SA/DA 5, l (0 C70 p
SURFACE AREA REQUIRED e ! e 5� c 7
SURFACE AREA PROVIDED &3 -7 % S (FROM PLAN CONTOURS)
VOLUME CALCULATION:
VOLUME REQUIRED 3E330062 . -f 45008( ys) -- l Z - 6338
VOLUME PROVIDED
SA AT TEMPORARY STORAGE ELEVATION ZI.7 . 845( 5�
VOLUME PROVIDED &o 7( f 84 s f
Z x- = 'T 70 cf
ORIFICE CALCULATION-.
Q = VOLUME - SECONDS A = [Q/.6 G2 H * 144 H = HWL-NWL/2 D= � X 2
NUMBER OF SECONDS IN 2 DAYS = 172800 IN 5 DAYS = 432000
Q2= /172900 A2= 1, 55 1/7 D2= /, 4 8
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