SW8040107_COMPLIANCE_20130408

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

Permit Number:
(to be provided by City of Wilmington)
BMP Drainage Basin #:
Wet Detention Basin 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.
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):
❑ does ® does not incorporate a vegetated filter at the outlet.
This system (check one):
❑ does ® does not incorporate pretreatment other.than a forebay.
Important maintenance procedures:
— Immediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should be watered twice weekly if
needed, until the plants become established (commonly six weeks).
— No portion of the wet detention pond should be fertilized after the first initial
fertilization that is required to establish the plants on the vegetated shelf.
Stable groundcover should be maintained in the drainage area to reduce the
sediment Ioad to the wet detention basin.
If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
— Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.5 inches. Records of operation
and maintenance should be kept in a known set location and must be available upon
request.Inspection activities shall be performed as follows. Any problems that are found
shall be repaired immediately.
.' n�
BMP�;element:.l' � � , '
:�r6 �t M .#
g�Poteggrl rol lem .�*��;1 � ` i
H,.x "wiI emed'ate`t rob ro
; ow I4 1 r j lies lem
The entire BMP
Trash/debris is resent.
Remove the trash/debris.
The side slopes of the
Areas of bare soil and/or
Regrade the soil if necessary to
wet detention basin
erosive gullies have formed.
remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
fertilizer application,
[7one-time
Vegetation is too short or too
Maintain vegetation at a height of
110
ong.
approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.4
Page 1 of 4

Permit Number:
(to be provided by City of Wilmington)
LIMP Drainage Basin #:
'BMP„,elemeri#ck ��a »�
0
Pofentzal roblem ��"`�- "� ;�_ -;�'
How�,will=remedzafe�tlie�` rntle�.
The inlet device: pipe or
The pipe is clogged.
Unclog the pipe. Dispose of the
Swale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged._
Erosion is occurring in the
Regrade the Swale if necessary to
Swale.
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design depth for
possible. Remove the sediment and
sediment storage.
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 pesticide is used, wipe it on
the plants rather than s ra in .
The vegetated shelf
Best professional practices
Prune according to best professional
show that pruning is needed
practices
to maintain optimal plant
health.
The plant community and
Restore plant vegetation to
coverage is significantly
approved condition. If landscape
(>25%) different from
plan needs to be adjusted to specify
approved landscape plan.
vegetation more appropriate for site
conditions, contact City Stormwater
or Engineering Staff.
Cattails or other invasive
Remove all invasives by physical
plants cover >25% of the veg't
removal or by Wiping them with
shelf. A monculture of plants
pesticide (do not spray) - consult a
must be avoidedprofessional.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
The main treatment'area
Sediment has accumulated to
Search for the source of the
a depth greater than the
sediment and remedy the problem if
original design sediment
possible. Remove the sediment and
storage depth.
dispose of it in a location where it
will not cause impacts to streams or
kth Mr::
Form SW401-Wet Detention Basin O&M-Rev.4
W_._p
APR
BY:
,0a — —
08 2013
Page 2 of 4

Penn it Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element:
Potentialproblem:
How 1 will remediate theproblem:
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present.
consult a professional to remove
beavers.
A tree has started to grow on
Consult a dam safety specialist to
the embankment.
remove the tree.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair. if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the local NC Division of
damage have occurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at 919-733-
1786.
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 33.0 feet in the main pond, the
sediment shall be removed. .
When the permanent pool depth reads 34.5 feet in the forebay, the sediment
shall be removed.
Sediment Removal
Bottom Elevat
BASIN DIAGRAM
ill in the blanks)
34.5 1 Pe manen�
-----------------x
Volume
33.5 ft Min.
Sediment
Storage
FOREBAY
Permanent Pool Elevation 36.75
Pool
Sediment Removal Elevation 33.0 Volume
-
------------------------------------------ -----
Bottom Elevation 32.0 1 1-ft
MAIN POND
APR 0 8 2013
Storage
Form SW401-Wet Detention Basin O&M-Rev.4
Page 3 of 4

Permit Number: .11,
(to be provided by DWQ) If
E
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:Carolina Gymnastics Academy Expansion
BMP drainage area number:
Print name:Michele Zgpple
Title:Member Manager
Address:3529 Carolina Beach Road, Wilmington, NC 28412
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.
1, Iku(A C,.yCC -..._ , a Notary Public for the State of
Mr- Ah Cr ` _, County of _ � r , do hereby certify that
' personally appeared before me this
day of IVIX'Ija , 2013-_, and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
SEAL
�pTAR1-
.&13L%Cj.
My commission expires
APR 0 8 20S
Form SW401-Wet Detention Basin O&M-Rev.4 Page 4 of 4

1213
CAROLINA GYMNASTICS ACADEMY, INC.
3529 CAROLINA BEACH RD
WILMINGTON, NC 28412
910-796-1896 66-456-531
DATE
PAY
TO THE
ORDER OF... ...
Li vt 4 G DOLLARS U
FIRST RANK
BEMLLE, NORTH CARROUNNA 28451
FOR�404i/I`��

Completeness Review Checklist
Project Name: ,�Ff, eums-r.00KIC-M 4 ):,pA,,,(Received Date: R
Project Location: Accepted Date:
Rule(s) C12008 Coastal ®1995 Coastal ®Phase II (WiRO) ®Universal 111988 Coastal
Type of Permit: New or Mad or PR Existing Permit ## ( od r PR): oyol o� PE Cert on File?
Density; (HDL or ID Type: Com al or Residential ®NCG:
%: % OK?) Stream Class: GvJ ®SA Map ®Offsite to SWS
Subdivided?: Subdivision or Si le L t MORW Map Exempt
Paperwork Emailed Engineer on:
Supplement(s) (1 original per BMP) BMP Type(s):
&M with correct/original signatures (1 original per BMP except LS/VFS and swoles)
DApplication with correct/ori inai signatures
orp or LLC: Sid. Au h. p r SoS or letter ®Deed
$505 (within 6mo)
Soils Report with SHW�— cJ Note to Reviewer:
7t C-t�riculations (signed/sealed) -may lene-p RM 4tta'2 J?60,J-7 {DPAt y W,U
No obvious errors ^� r��� e� '- {b�w,,t1,� ,
4TH r wE, I)E� i tA K,ZS .
®Density includes common areas, etc
A�ied Restrictions, if subdivided` `lW �U� ��� �u�E Cl•S")
®Signed & NotarizedE�TL��^TC ?
CUn rlQutir)vs lu.�n
®Correct Templatei(Comm/Res & HD/LDVol,ec. Covenants & Rest. _ p
a If ,� - - ----- 1•�fu, S�-S3rn4_� w�(14tiQ Orand��
Mans
�2 Sets
Grading
Vicinity Map
Legend
[% - fwkA—
Details (roa cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc)
Wetland. Delineated or No Wetlandsktt
Layout (proposed BUA dimensions)
Maps
®Project Boundaries
ND
e�e ) coza [ W iO
nfiltration Wet Pond Offsite
Soils Report ®Soils Report PE Cert for Master Lot ##:
SHWT: SHWT: Deed Rest for Master ®Lot #t Matches Master
Bottom: PP: BUA Permitted (Master): sf
Visited: BUA Proposed (Offsite): sf
kdditional Information: Lilta lo+ &vq)
Permitted 6113laq (P{L) Proposed: _cL_,)013 Proposed:__ - _ Proposed:_
3UA (sf)
)A (sf)
)P (el)
;HWT (el)
)epth (ft)
-A (sf)
CoAvCt+Rd
-
cD.50
7
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