SW8061108_COMPLIANCE_20061213

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

lrpp/pp�
WET DETENTION POND ANALYSIS
FILE NAME- S.IWQSISTORMWATERIEXCELSPREADSHEETSIPOND161108rev.dec06 WK1
/11ROJECT #R SW8fi7i',fO rev d 06 REVIEWERCB ker
li"TF"'Y"rrr�sr�r-,r:�R�f)�rlfi„�m+,m•, ,her
PROJECT NAME MJ„Self Storage- Airport �7]70 P 7Li r_, r�'f DATE 13-Dec-06
Receiving Stream t,JT to, m th"Creek
Drainage Basin Cape Fear,'""°' �E`:
Class 15, r
Index No
Site Area Po'. a", AI' rn, ,'7"02 lacres
Drainage Area 00111 square feet Area in Acres 528
IMPERVIOUS AREAS Rational C
Buildings �`"� 01 0D 00; square feet 095
���llt,f ,
Parking
?,;,11',084�001100;;
square feet 095
SW
�A;':'2300'f00a1
square feet 095
Offsite
vbli
'141N,
square feet
,l4,
square feet
square feet
f€14i tFl lfill��� g,Ifi 1�Y�,
square feet
194900 00
TOTAL
square feet
SURFACE AREA CALCULATION
Rational Cc= 084
% IMPERVIOUS
84 67%
SA/DA Ratio
5 48%
Des Depth
fri` �'''?;' 3'';'';'?`,',; 41
Req SA
12615 sf
TSS, 85 or 90
Prov SA
sf
VOLUME CALCULATION * place a "1" in the box if Rational is used
Rational ?*
Des Storm
r; +� ,'r��;;g i"I"1 `00;" inches
Rv=
0 812
Bottom
Perm Pool
"110100. msl
Desigg n Pool
,,,3,f �,���,,�„�, ,, �� 1'`2 msl
f,�,,,,,o,�,��,�,�,,f�,�
Storage met @elev 11 18 msl
Req Volume
16018 cf
Vol Prov at DP
16320 cf
Perm Pool Volume=
Req Forebay Volume=
Provided Volume=
Percent=
1,'.�,,,,Q960017,
7920
;`„ 7895 00',; .
19 9%
3n Area Inc. Vol Acc Vol
000
1360000 1360000
Avg Head = 0 56 ft Q2 Area = 3 71 sq inches
Flow Q2, cfs
0 093 cfs
Q5 Area = 148
sq
inches
Flow Q5, cfs
0 037 cfs
Orifice Area 3 14
sq
inches
No of Orifices
0 078
cfs
Diameter, inches�v,2
00, weir H x W
it, in x
',a a�
3�f ���,� , �„ ,�� in
Drawdown =
2 4 Idays
Surface Area @DP =
14720 sq ft
Falling Head Drawdown =
3 3 days
C= 3 325833333
L= -0 112
COMMENTS
Surface Area , Volume and Orifice are within Design Guidelines

ESP #UF10 400
POND MAINTENANCE REQUIREMENTS
Project Name MJ Self Storage -- Airport Project Number o
Responsible Party Archie McGirt, President Phone No 910-612-0868
Monkey Junction Mini Storage, Inc
Address 5044 Carolina Beach Road, Wilmin on, NC 28412
I Monthly, or after every runoff -producing rainfall event, whichever comes first
A Inspect the trash rack, remove accumulated debris, repair/replace if it is not functioning
B Inspect and clear the orifice of any obstructions If a pump is used as the drawdown mechanism,
pump operation will be checked A log of test runs of the pump will be kept on site and
made available to DWQ personnel upon request
C Inspect the pond side slopes and grassed inlet swales, remove trash, and repair eroded areas
before the next rainfall event
D If the pond is operated with a vegetated filter, the filter will be checked for sediment
accumulation, trash accumulation, erosion and proper operation of the flow spreader mechanism
Repairs/cleaning will be done as necessary
II Quarterly (Four times a year)
A Inspect the collection system (i e , catch basins, piping, grassed swales) for proper functioning
Accumulated trash will be cleared from basin grates, basin bottoms, and piping will be checked
for obstructions and cleared as required
B Pond inlet pipes will be checked for undercutting Riprap or other energy dissipation structures
will be replaced, and broken pipes will be repaired
III Semi-annually (twice a year)
A Accumulated sediment from the bottom of the outlet structure will be removed
B The forebay depth will be checked at various points Sediment removal is required when the
depth is reduced to 75% of original design depth of 3 feet
C Grassed swales, including the vegetated filter if applicable, will be reseeded twice a year as
necessary Repair eroded areas immediately

POND MAINTENANCE REQUIREMENTS
PAGE 2
IV Annually (Once a year)
A The pond depth will be checked at various points Sediment removal is required when the depth
is reduced to 75% of the original design depth or Y, whichever is greater Design depth is
', measured vertically from the orifice down to the pond's bottom Sediment must be
removed to at least the original design depth
V General
A Mowing of the side slopes will be accomplished according to the season Maximum grass height
will be 6"
B Cattails are encouraged along the pond perimeter, however, they will be removed when they
cover more than 1/2 the surface area of the pond The best time to cut them is at the end of the
growing season, in November Environmentally sensitive chemicals for use in killing cattails can
also be used Contact your nearest Agricultural Extension Agent
C The onfice/pump is designed to draw down the pond in 2-5 days If drawdown is not
accomplished in that time, the orifice will be replaced with a larger or smaller onfice Slow
drawdown may be attributed to a clogged system The source of the clogging will be found and
eliminated
D All components of the detention pond system will be kept in good working order Repair or
replacement components will meet the original design specifications as per the approved
stormwater plan If previously approved components are determined to be ineffective, the
component will be redesigned and/or replaced
V Special Requirements
I, Archie McGirt
, hereby acknowledge that I am the financially
(please print or type name clearly)
responsible party for maintenance of this detention pond I will be responsible for the performance of the
maintenance as outlined above, as part of the Stormwater Management Permit received for this project
Signatun
Revised 2/25/97
Date

CAPE FEAR RIVER BASIN
Name of Stream Subbasm Stream Index Number Map Number Class
Shaddox Creek
CPF07
16-43
E22NE9
WS-IV
Shade Branch
CPF19
18-68-2-11-1
H26SW4
C,Sw
Shaken Creek
CPF23
18-74-33-4
I28SW5
C,SW
Shelbed Creek
CPF17
18-88-4
L27NW7
SA,HQW
Shelter Swamp Creek
CPF23
18-74-33-2-2
I28SE2
C,Sw
Shinn Creek
CPF24
18-87-25
K27NE5
SA,HQW
Sikes Mill Run
CPF19
18-68-2-10-4
H26NW9
C,Sw
Sills Creek
CPF22
1B-74-29-4
I26NE5
C,Sw
Silver Lake
CPF17
1B-82-1
K27NW9
C,Sw
Silver Run
CPF14
18-23-13-2
G21NEB
WS-III
Silver Stream Branch
CPF17
18-76-1-1
K27NW5
C,Sw
Simlin Creek
CPF10
17-26-7
F20NE7
C
Simmons Branch
CPFOB
17-10-(1)
D19SE2
WS-IV
Simmons Branch
CPFOS
17-10-(2)
D19SE2
WS-IV,CA
Simon Branch
CPF17
1B-64-8
J25SE6
C,Sw
Singletary Lake
CPF20
18-68-17-5-1
125SW1
B,SW
Sings Creek
CPF10
17-26-5-5-1
F20SW2
WS-III
Six Runs Creek
CPF19
18-68-2-(0 3)
G25NE9
C,Sw
Six Runs Creek
CPF19
18-68-2-(11 5)
H26SW1
C,Sw,ORW +
Skipper Hill Branch
CPF17
18-66-6-2
J26SW6
C,Sw
Skunk Creek
CPF11
17-40-1
F22NW2
C
Slash Branch
CPF14
18-23-16-6-1
F22SW7
WS-III
Smith Branch
CPF02
16-11-11
C2GNW5
C,NSW
Smith Branch
CPF13
18-20-31
F23SE5
WS-IV
Smith ---Creek
CPF23
c18-74;635
J27SE7
CC,3w--->
Smith Swamp (Jones Lake Drain)
CPF16
18-46-7
124NE4
C
Smiths Creek
CPF10
17-34
E21SEB
WS-IV
Smiths Mill Pond Run (Smiths Mill Pond)
CPF18
18-68-12-14
I25NW2
C,Sw
Smokehouse Creek
CPF17
18-BB-11
L26NE9
SC,HQW
Snows Cut
CPF17
18-87-31 5
K27SW6
SC
Snows Cut
CPF24
18-87-31 5
K27SWG
SC
Snows Marsh
CPF17
18-BB-2
L27NWI
SC
South Buffalo Creek
CPF02
16-11-14-2
C19SW6
C,NSW
South Fork Cane Creek
CPF04
16-28-5
D21SW6
C,NSW
South Prong Anderson Creek
CPF14
18-23-32-2
F23SWB
C
South Prong McLeod Creek
CPF14
18-23-29-1-2
P22SEG
C
South Prong Richland Creek
CPF09
17-22-2
E19SE3
C
South Prong Stinking Quarter Creek
CPF03
16-19-8-2-(2)
D20NE5
C,NSW
South Prong Stinking Quarter Creek (Kimeaville
CPF03
16-19-B-2-(1)
D20NE5
B,NSW
Lake)
South River
CPF18
18-68-12-(0 5)
G24NW6
C,Sw
South River
CPF18
18-68-12-18 5)
H24NE9
C,Sw,ORW +
Southport Restricted Area
CPF17
18-88-3 5
L27NW4
SC
Spearman Mill Creek
CPF19
18-6B-2-15
H25SE6
C,Sw
Spring Branch
CPF16
18-46-3
H24SE7
C
Spring Branch
CPF18
18-6B-12-2-4-1-2
G24NE2
C,SW
Spring Branch
CPF23
18-74-63-1
J27SE7
C,Sw
Spring Valley Lake
CPF14
18-23-6
F21SW9
WS-III,B
Squash Branch
CPF17
18-76-1-4
K27NW2
C,Sw
Squirrel Creek
CPF02
16-11-8-(1)
C19NE6
WS-III,NSW
Squirrel Creek
CPF02
16-11-8-(2)
C19NE6
WS-III,NSW,CA
Squirrel Creek
CPF09
17-22-6
E19NE6
C
Stagg Creek
CPF02
16-18-2-(o 5)
C21NE6
WS-11,HQW,NSW
Stagg Creek
CPF02
16-18-2-(2)
C21NE9
WS-II,HQW,NSW,CA
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