HomeMy WebLinkAboutSW7030111_HISTORICAL FILE_20171212STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW�//%
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
DOC DATE
YYYYMMDD
Energy, Mineral &
Land Resources
ENVIRONMENTAL QUALITY
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
TRACY DAVIS
Director
CERTIFIED MAII,
RETURN RECEIPT REQUESTED
7009 2250 0000 9252 1657
December 12, 2017
Memorial Missionary Baptist Church
Attention: Pastor Joseph A. Turner, Sr.
704 Cardwell Street
Elizabeth City, NC 27909
Dear Pastor Turner:
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7030111
Memorial Missionary Baptist Church
Pasquotank County
On June 24, 2016, 1 sent you the attached letter advising you that Stormwater permit
SW7030111 was up for renewal. To this date we have not received a response. The
permit has now expired and you are now operating without a valid permit. Operation of
a stormwater treatment facility without a valid permit is a violation of NC General Statute
143-215.1 and may result in an appropriate enforcement action including assessment of
civil penalties.
Please submit a completed renewal application along with a processing fee of $505.00
within 30 days. The permit renewal application forms can be found on our website at:
https://deq. nc.gov/abouVdivisions/energy-mineral-land-resources/energy-mineral-land-
rules/stormwater-program/post-construction. If you have questions, I will be glad to
discuss this with you by phone or meet with you in person. You can reach me at (252)
948-3923.
enclosure
Sincerely,
Roger K. Thorpe
Environmental Engineer
Nothing Compares_--�_,
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
Washinntnn RenlnnFi[Ofttcc 1 943 Wash inaron Snuare Mall I Washinnion. NC 271189
i-jonwo�: i'm -�;:,20 TJI)
eriT .',):3rtc n --i�i j-, b!,viti L 7 -I J, 'D "1'.1 .9 1 :iL.1
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1,
Energy, Mineral
and Land Resources
ENvWONMENTAL QVALFTY
June 24, 2016
Pastor Joseph A. Turner, Sr.
Memorial Missionary Baptist Church
704 Cardwell Street
Elizabeth City, NC 27909
WAO
PAT MCCRORY
Governor
DONALD R. VAN DER VAART
Secretary
TRACY DAVIS
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7030111
Memorial Missionary Baptist Church
Pasquotank County
Dear Pastor Turner:
Director
A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit
SW7030111 for a stormwater wet detention system serving the Memorial Missio ary Baptist Church
located at 704 Cardwell Street in Elizabeth City, NC expires on March 14, 2017. his is a reminder that
permit renewal applications are due 180 days prior to expiration. We do not have a record of receiving a
renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for permit renewal at
least 180 days prior to expiration of the permit. Also it was noted in the file that a designer's certification
that the project was constructed in accordance with the approved plans as required by the permit has not
been submitted. Please include this with your application. Permit application forms for renewal can be
found on our website at http://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-
land-perm itslstormwater-permits/forms.
North Carolina General Statutes and the Coastal Stormwater rates require that this property be covered
under a stormwater permit Failure to maintain a permit subjects the owner to assessment of civil
penalties.
if you have questions, please feel free to contact me at {252} 948-3923, 1 will be glad to discuss this by
phone or meet with you. idw
Sincerely,
Ro er K. Thorpe
Environmental Engineer
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
943 Washington Square Mall. I Washington, NC 27989
257-946-6481 T
Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
June 24, 2016
Pastor Joseph A. Turner, Sr.
Memorial Missionary Baptist Church
704 Cardwell Street
Elizabeth City, NC 27909
t4L-R
PAT MCCRORY
Govemor
DONALD R. VAN DER VAART
Secretary
TRACY DAVIS
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7030111
Memorial Missionary Baptist Church
Pasquotank County
Dear Pastor Turner:
Director
A Division of Energy, Mineral, and Land Resources file review has determined that Stormwater Permit
SW7030111 for a stormwater wet detention system serving the Memorial Missio ary Baptist Church
located at 704 Cardwell Street in.Elizabeth City, NC expires on March 14, 2017. This is a reminder that
permit renewal applications are due 180 days prior to expiration. We do not have a record of receiving a
renewal application.
Please submit a completed permit renewal application along with a $505.00 fee for permit renewal at
least 180 days prior to expiration of the permit. Also it was noted in the file that a designer's certification
that the project was constructed in accordance with the approved plans as required by the permit has not
been submitted. Please include this with your application. Permit application forms for renewal can be
found on our website at http://deq.nc.gov/about/divisions/energy-mineral-land-resources/energy-mineral-
land-permits/stormwater-permitslforms.
North Carolina General Statutes and the Coastal Stormwater rwles require that this property be covered
under a stormwater permit. Failure to maintain a permit subjects the owner to assessment of civil
penalties.
If you have questions, please feel free to contact me at (252) 948-3921 1 will be glad to discuss this by
phone or meet with you.
Sincerely,
Roger K. Thorpe
Environmental Engineer
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
945 Washington Square Mall, I Washington, NC 27889
252.946-6481 T
Energy, Mineral &
Land Resources
ENVIAONMENTAL QUALITY
V,4A f
ROY COOPER
Cove) nor
MICHAEL S. RECAN
secrercrrp
TRACY DAMS
IHrrcrar
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
7009 2250 0000 9252 1657
December 12, 2017
Memorial Missionary Baptist Church
Attention: Pastor Joseph A. Turner, Sr.
704 Cardwell Street
Elizabeth City, NC 27909
Dear Pastor Turner:
Subject: Stormwater Permit Renewal
Stormwater Management Permit SW7030111
Memorial Missionary Baptist Church
Pasquotank County
On June 24, 2016, 1 sent you the attached letter advising you that Stormwater permit
SW7030111 was up for renewal. To this date we have not received a response. The
permit has now expired and you are now operating without a valid permit. Operation of
a stormwater treatment facility without a valid permit is a violation of NC General Statute
143-215.1 and may result in an appropriate enforcement action including assessment of
civil penalties.
Please submit a completed renewal application along with a processing fee of $505.00
within 30 days. The permit renewal application forms can be found on our website at:
https-#deq.nc.govlabout/divisions/energy-mineral-land-resources/energy-mineral-land-
rules/stormwater-program/post-construction. If you have questions, I will be glad to
discuss this with you by phone or meet with you in person. You can reach me at (252)
948-3923.
enclosure
Sincerely,
lG
Roger K. Thorpe
Environmental Engineer
Nothing Compares,
51aleol'NorlhCarolina I EnvironmentalQualfly I Energy, Mineral and Land Resoorces
Wngliirinror Reninnal Offlrr 1 441 Washinnlnn Smnrr rvfali I Wighinnrnri. Nf, 27AAI1
MCDENR
North Carolina Depailment of Environment and Natural Resources
Division of Water Quality
Pat McCrory Charles Wakild, P. E. John E. Skvarla, III
Governor Director Secretary
March 11, 2013
Mr. Darryl Stallings
Memorial Missionary Baptist Church
P.O. Box 2191
Elizabeth City, NC 27906
Subject: Failure to Provide Designer's Certification
Stormwater Management Permit SW7030111
Memorial Missionary Baptist Church
Pasquotank County
Dear Mr. Stallings:
This letter is to inform you of certain conditions of your stormwater permit that
have not been met. A file review has determined that a certification of completion has
not been submitted for this project. Permit condition number II. 6 states "Upon
completion of construction 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. Mail the Certification to
the Washington Regional Office, 943 Washington Square Mall, Washington, North
Carolina 27889, attention Division of Water Quality"
Please provide a copy of the certification or a statement that the project has not been
constructed to this Office at the letterhead address within 30 days of receipt of this
letter. If you have questions, please feel free to contact me at (252) 948-3923
Sincerely,
Roger K. Thorpe
Environmental Engineer
Washington Regional Office
Cc Hyman & Robey, PC
North Carolina Division of Water Quality
943 Washington Square Mall
Washington, NC 27889
Phone: 252-946-64811 FAX: 252-946-9215
Internet: www.ncwaterggality.og
An Equal Opportunity 1 Affirmative Action Employer
One
NorthCarolina
Natur"&
Mman & Robey,, PC
Consulting Engineers and Land Surveyors (252) 335-1888 Office
(252) 338-2913 Office
(252) 338-5552 Fax
March 10, 2003
Mr. Roger K. Thorpe
Dept. of Environment and Natural Resources 4
Water Quality Section
943 Washington Square Mall MAR 1 1 2003
Washington, NC 27889
Subject: Stormwater Management Permit
Memorial Missionary Baptist Church (Revised)
Proj. # 02912
Stormwater Review SW70301 I I
Dear Roger:
Based on your comments and the churches wishes, the above referenced plan has
been revised. The distance between the inlets and the outlet has been increased and the
pond location has changed. For your review and approval, I have enclosed 2 copies of
each of the following:
The above referenced plans.
2. Sheet 1 of 4 of the Wet Detention Basin Supplement (this is the only sheet
of the application that changed).
3. The detention pond calculations.
If you have any questions, please do not hesitate to call this office at
(252) 335-1888.
cc: file
Sincerely,
Se n C. Robey, P.E.
Kimberly D. mby
Engineering Assistant
150-A US Highway 158 East, Camden, NC 27921
��� W P G. R_
Michael F. Easley, Governor
Co
Willi
Jr., Secretary
r North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
DIVISION OF WATER QUALITY
February 24, 2003
Mr. Darryl Stallings
Memorial Missionary Baptist Church
PO Box 2191
Elizabeth City, NC 27906
Subject: Stormwater Review SW7030111
Memorial Missionary Baptist Church
Pasquotank County
Dear Mr. Stallings:
This office received your State stormwater permit application
and plans for the subject project on January 3, 2003. A preliminary
review of your project has been completed. The following additional
information is needed before a permit can be issued:
The inlet near the west end of the wet detention pond is
located very near the outlet of the pond. This will likely
result in short circuiting. They should be moved further
apart or baffled to prevent short circuiting.
The above information must be submitted within 30 days, or
your project will be returned as incomplete. You should also be
aware that the Stormwater Rules require that the permit be issued
prior to any development activity. If you have questions, please
feel free to contact me at (252) 946-6481, extension 214.
Sincerely,
/c %ma`s--`
Rog r K. Thorpe, P.E.
Environmental Engineer
Washington Regional Office
cc: Pasquotank County Inspections
Hyman & Robey
943 Washington Square Mall Washington, N.C. 27889 Telaphone (252) 946-6481 FAX (252) 94&9215
Human & Robeu, PC
Consulting Engineers and Land Surveyors (252) 335-1888 Office
(252) 338-2913 Office
(252) 338-5552 Far
January 2, 2003
Mr. Bill Moore
Dept. of Environment and Natural Resources
Water Quality Section
943 Washington Square Mall RECENED
Washington, NC 27889
JAN - 3 2003
Subject: Stormwater Management Permit DWQ_WARQ
Memorial Missionary Baptist Church
Proj. # 02912
Dear Mr. Moore:
Enclosed for your review and approval, please find the following items:
1. Two (2) copies of the above referenced plans.
2. The original and one (1) copy of the Stormwater Exemption Application
and Wet Detention Basin Supplement.
Two (2) copies of the project description and calculations.
4. Check in the amount of $420.00 for the required fee.
If you have any questions, please do not hesitate to call this office at
(252) 335-1888.
cc: file
Sincerely,
Sean C. Robey, P.E.
l
Kimberly D. amby
Engineering Assistant
150-A US Highway 158 East, Camden, NC 27921
PERMANENT POOL DETENTION PONDS Robey Associates Engineering
DESIGN OF POND 529 South Hughes Blvd.
Elizabeth City, NC 27909
Memorial Missionary Baptist Church - Version B (252)-335-1888
10 Yr, 24 Hr Storm 03/10/03
DETENTION POND Page I
SA/DA PERCENTAGES FOR 90% TSS REMOVAL WITHOUT VEGETATIVE FILTER
% IMPRV 3.0 FT 3.5 FT 4.0 FT
4.5 FT
5.0 FT
5.5 FT
6.0 FT
6.5 FT
7.0 FT
7.5 FT
10 % 1.3 1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0A
20 % 2.4 2.0
1.8
1.7
1.5
1.4
1.2
1.0
0.9
0.6
30% 3.5 3.0
2.7
2.5
2.2
1.9
1.6
1.3
1.1
0.8
40% 4.5 4.0
3.5
3.1
2.8
2.5
2.1
1.8
1.4
1.1
50% 5.6 5.0
4.3
3.9
3.5
3.1
2.7
2.3
1.9
1.5
60% 7.0 6.0
5.3
4.8
4.3
3.9
3.4
2.9
2.4
1.9
70% 8.1 7.0
6.0
5.5
5.0
4.5
3.9
3.4
2.9
2.3
80% 9.4 8.0
7.0
6.4
5.7
5.2
4.6
4.0
3.4
2.8
9G10.7 9.0
7.9
7.2
6.5
5.9
5:2
4.6
3.9
3.3
100% 12.0 10.0
8.8
8.1
7.3
6.6
5.8
5.1
4.3
3.6
WATERSHED AREA:
2.21
ACRES
WATERSHED % IMPERVIOUS:
55
%
PERMANENT POOL ELEVATION:
9
FT
DESIGN PERMANENT POOL DEPTH:
6
FT
SAIDA PERCENTAGE FACTOR:
3.4
%
(FROM ABOVE
TABLE -TAKEN
FROM DESIGN
OF STORM WATER
POND SURFACE AREA REQ'D:
FOREBAY AREA:
AT WIDTH = 0.33 LENGTH,
WIDTH = 33.0308 LF
LENGTH = 99.0924 LF
CONTROL FACILITIES WORKSHOP. MANUAL -PENC 1988)
3273 SF
982 SF
(BASED UPON MINIMUM SURFACE AREA)
Use these dimensions: WIDTH 56 LF
LENGTH 147.55 LF
VOLUME OF I" RAINFALL Normal Pool Elevation 9
AREA OF ROOFS: 0.25 AC
AREA OF PARKINGICONCRETE. 0.93 AC
AREA OF GREEN AREAS: 1.03 AC
VOLUME OF RUNOFF 4862.39 CF VOL (CF)=[(ROOF*1.0)+(PARKING*.95)+(GRASS*0.2)]*43,560112
STORAGE DEPTH FOR MINIMUM AREA = 0.59 FT
ELEVATION OF 1"RAINFALL = 9.59
DRAWDOWN - WATER QUALITY
Q(2 DAYS) = 0.02814 CFS
Q(5 DAYS) = 0.01126 CFS
1" RUNOFF STAGE 0.59 FT
DEPTH OF DRAWDOWN DEVICE BELOW OUTLET 1.5 FT
I" RUNOFF OUTLET DEVICE: 1.17589 INCH DIA HOLE
DIAMETER OF HOLE TO USE: 1.25 INCH DIAMETER
1" STORM RUNOFF DRAWDOWN TIME 2.52841 DAYS
A = [Q/ (Cd *SQRT(2gh))] * 144
Rad.=SQRT(A/PI)
Dia.=2*Rad.
INFLOW HYDROGRAPH
Return Year Storm 10 Yr
Qp = Peak Discharge = 16 cfs
Tc = Time of Concentration = 7.2 min
Calculation of Tp (Time to Peak)
From SCS NEH 4 , page 15-7 Eqn. 15.4
Lag Time (L) = WO - 8 *(S + 1)'0.7)/(1900*Y"0.5) for L in Hrs
where: 1 = hydraulic length of watershed (ft)
S = (10001CN)-10
CN = approximately same CN from TR-55
Y = avg. watershed land slope in %
S = (1000/CN)-10 = 1.49425
L= 0.15957 hrs
From SCS NEH 4 , page 16-7 Eqn. 16.7
Tp=D/2+L
where : D = unit of excess duration rainfall (hrs)
L = Lag Time (hrs)
From SCS NEH 4 , page 16-8 Eqn. 16.12
D = 0.133 tc
where: Tc = Time of Concentration (hrs) - (See Tr-55 Printout)
THEREFORE: D = 0.01596 hrs
Tp =
0.16755 hrs —
10.0533
min
Volume under Hydrograph
= 1.39 * Qp * Tp =
13415.1
Cubic Feet
Page 2
— 455 ft
1,49425
87
0.7 %
Inflow Hydrograph
Page 3
SCS Dimensionless Hydrograph
Time
Discharge Time
Discharge
Volume
Ratio
Ratio hr
cfs
cf
0.00
0.00 0.00
0
0.10
0.03 0.02
0
29
0.20
0.10 0.03
2
97
0.30
0.19 0.05
3
183
0.40
0.31 0.07
5
299
0.50
; 0.47 0.08
8
454
0.60
0.66 0.10
11
637
0.70
0.82 0.12
13
791
0.80
0.93 0.13
15
898
0.90
0.99 0.15
16
955
1.00
1.00 0.17
16
965
1.10
0.99 0.18
16
955
1.20
0.93 0.20
15
898
1.30
0.86 0.22
14
830
1.40
0.78 0.23
12
753
1.50
0.68 0.25
1l
656
1.60
0.56 0.27
9
540
1.70
0.46 0.28
7
444
1.80
0.39 0.30
6
376
1.90
0.33 0.32
5
318
2.00
0.28 0.34
4
270
2.20
0.21 0.37
3
400
2.40
0.15 0.40
2
284
2.60
0.11 0.44
2
207
2.80
0.08 0.47
1
149
3.00
0.06 0.50
1
106
3.20
0.04 0.54
1
77
3.40
0.03 0.57
0
56
3.60
0.02 0.60
0
41
3.80
0.02 0.64
0
29
4.00
0.01 0.67
0
21
4.50
0.01 0.75
0
24
5.00
0.00 0.84
0
0
Volume under hydrograph =
12742 cf
Based upon runoff volume
= 13415.1
cf
Depth req'd for minimum area = 1.62356 ft
STAGE STORAGE FUNCTION OF POND
(FOR RECTANGULER DETENTION POND ONLY)
Minimum surface area taken at normal water level
BASIN AREA INCR ACCUM
VOLUME VOLUME STAGE In s
S Z
sf cf cf ft
Pond Side Slope (M) =
In Z Z est Elevation
8263 0
0
0
Surface area at normal pool
9
8882 4286
4286
0.5
8.36
-0.69
0.55
9.5
9520 4601
8887
1
9.09
0.00
1.03
10
10176 4924
;13811
L5
9.53
0.41
1.51
10.5
10849 5256
19067
2
9.86
0.69
2.00
11
11541 5598
24665
2.5
10.11
0.92
2.50
11.5
12251 5948
30613
3
10.33
1.10
3.02
12
12978 6307
36920
3.5
10.52
1.25
3.55
12.5
13724 6676
43596
4
10.68
1.39
4.[0
13
14488 7053
50649
4.5
10.83
1.50
4,67
13.5
15269 7439
58088
5
10.97
1.61
5.26
14
Regression
Output:
Constant
9.34346
Ks = S/Z"b
= 8582.066
Std Err of Y Est
0.00969
R Squared
0.99962
No. of Observations
7
Degrees of Freedom
5
X Coefficient(s) 1.15215 = b
Std Err of Coef. 0.01009
FOR VERTICAL SIDED DETENTION POND SET b=0, AND Ks = SURFACE AREA (SF)
STAGE DISCHARGE
(FOR RISERIBARRELL SPILLWAY
W EMERGENCY WEIR)
RISER
Dr =
24
Riser Dia. (in)
Etop =
9.59
Elev, Top Riser (ft) 10.62
Cwr =
3.33
Riser weir coeff
Cdr =
0.60
Riser orifice coeff
Hln =
5
Number of Holes
H1d =
3
Hole Dia. (in)
EH1 =
20.00
Elev. Holes (1)
H2n -
5
Number of Holes
H2d -
2
Hole Dia. (in)
EH2 =
20.00
Elev. Holes (2)
H3n =
0
Number of Holes
H3d =
2
Hole Dia. (in)
EH3 =
20.00
Elev. Holes (3)
BARREL:
Db =
12
Barrel Dia. (in)
Einv =
9.00
Elev Invert Barrel (ft) Barrell Adjustment Factor
Cdb =
0.60
Barrel orifice coeff
R
Page 4
N
EMERGENCY WEIR
Page 5
Cw
=
3
Weir coeff
Ecr
-
20.00
Elev weir coeff (ft)
Lw
=
5
Weir Length (ft)
Riser
Riser
Riser
Elevation
Hole
Hole
Hole
Riser
Riser
Barrel
Principal
Emergcy
Total
(1)
(2)
(3)
(weir)
(orifice)
Spillway
Weir
Outflow
9.00
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
9.00
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
9.01
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
9.03
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
9.06
0.0
0.0
0.0
0.0
0.0
0.0
0.00
0.0
0.00
9.10
0.0
0.0
0.0
0.0
0.0
0.1
0.00
0.0
0.00
9.16
0.0
0.0
0.0
0.0
0.0
0.2
0.00
0.0
0.00
9.25
0.0
0.0
0.0
0.0
0.0
0.3
0.00
0.0
0.00
9.34
0.0
0.0
0.0
0.0
0.0
0.5
0.00
0.0
0.00
9.45
0.0
0.0
0.0
0.0
0.0
0.8
0.00
0.0
0.00
9.55
0.0
0.0
0.0
0.0
0.0
1.1
0.00
0.0
0.00
9.66
0.0
0.0
0.0
0.4
4.0
1.4
0.38
0.0
0.38
9.76
0.0
0.0
0.0
1.4
6.2
1.8
1.45
0.0
1.45
9.84
0.0
0.0
0.0
2.7
7.6
2.1
2.07
0.0
2.07
9.92
0.0
0.0
0.0
3.9
8.6
2.3
2.35
0.0
2.35
9.98
0.0
0.0
0.0
5.1
9.4
2.6
2.59
0.0
2.59
10.03
0.0
0.0
0.0
6.1
10.0
2.7
2.75
0.0
2.75
10.07
0.0
0.0
0.0
6.9
10.4
2.8
2.84
0.0
2.84
10.09
0.0
0.0
0.0
7.5
10.7
2.9
2.91
0.0
2.91
10.11
0.0
0.0
0.0
7.9
10,9
3.0
2.96
0.0
2.96
10.13
0.0
0.0
0.0
8.2
11.1
3.0
2.99
0.0
2.99
10.15
0.0
0.0
0.0
8.7
11.3
3.0
3.03
0.0
3.03
10.15
0.0
0.0
0.0
8.7
11.3
3.0
3.04
0.0
3.04
10.14
0.0
0.0
0.0
8.5
11.2
3.0
3.02
0.0
3.02
10.12
0.0
0.0
0.0
8.2
11.1
3.0
2.98
0.0
2.98
10.10
0.0
0.0
0.0
7.7
10.8
2.9
2.93
0.0
2.93
10.08
0.0
0.0
0.0
7.2
10.6
2.9
2.87
0.0
2.87
10.05
0.0
0.0
0.0
6.6
10.3
2.8
2.81
0.0
2.81
10.02
0.0
0.0
0.0
6.0
10.0
2.7
2.73
0.0
2.73
9.99
0.0
0.0
0.0
5.4
9.6
2.7
2.66
0.0
2.66
9.96
0.0
0.0
0.0
4.8
9.3
2.5
2.54
0.0
2.54
9.89
0.0
0.0
0.0
3.5
8.3
2.3
2.26
0.0
2.26
9.82
0.0
0.0
0.0
2.4
7.3
2.0
2.00
0.0
2.00
Page 6
ROUTING OF INFLOW HYDROGRAPH THROUGH POND AND OUTFLOW DEVICE
Total
Riser
Riser
Riser
Barrel
Emerg
Time
Inflow
Storage
Stage
Outflow
Holes
(weir)
(orifice)
Spillway
t (hr)
cfs
cf
Elevation
cfs
(1+2+3)
cfs
cfs
cfs
cfs
cfs
0.000
0
0
9.00
0.00
0.00
0.00
0.00
0.00
0.00
0.017
0
0
9.00
0.00
0.00
0.00
0.00
0.00
0.00
0.034
2
28.9535
9.01
0.00
0.00
0.00
0.00
0.00
0.00
0.050
3
125.465
9.03
0.00
0.00
0.00
0.00
0.01
0.00
0.067
5
308.837
9.06
0.00
0.00
0.00
0.00
0.04
0.00
0.084
8
608.024
9.10
0.00
0.00
0.00
0.00
0.09
0.00
0.101
11
1061.63
9.16
0.00
0.00
0.00
0.00
0.18
0.00
0.117
13
1698.61
9.25
0.00
0.00
0.00
0.00
0.33
0.00
0.134
15
2490
9.34
0.00
0.00
0.00
0.00
0.53
0.00
0.151
16
3387.56
9.45
0.00
0.00
0.00
0.00
0.80
0.00
0.168
16
4343.03
9.55
0.00
0.00
0.00
0.00
1.10
0.00
0.184
16
5308.14
9.66
0.38
0.00
0.38
3.97
1.43
0.00
0.201
15
6240.72
9.76
1.45
0.00
1.45
6.21
1.77
0.00
0.218
14
7051.04
9.84
2.07
0.00
2.67
7.61
2.07
0.00
0.235
12
7755.95
9.92
2.35
0.00
3.89
8.64
2.35
0.00
0.251
11
8367.12
9.98
2.59
0.00
5.06
9.43
2.59
0.00
0.268
9
8867.09
10.03
2.75
0.00
6.08
10.02
2.75
0.00
0.285
7
9241.95
10.07
2.84
0.00
6.88
10.44
2.84
0.00
0.302
6
9514.5
10.09
2.91
0.00
7.48
10.74
2.91
0.00
0.318
5
9715.42
10.11
2.96
0.00
7.93
10.95
2.96
0.00
0.335
4
9855.49
10.13
2.99
0.00
8.25
11.09
2.99
0.00
0.369
3
10035.1
10.15
3.03
0.00
8.66
11.27
3.03
0.00
0.402
2
10068.7
10.15
3.04
0.00
8.74
11.31
3.04
0.00
0.436
2
9985.6
10.14
3.02
0.00
8.55
11.22
3.02
0.00
0.469
1
9827.6
10.12
2.98
0.00
8.18
11.06
2.98
0.00
0.503
1
9616.18
10.10
2.93
0.00
7.71
10.84
2.93
0.00
0.536
1
9368.4
10.08
2.87
0.00
7.16
10.58
2.87
0.00
0.570
0
9099
10.05
2.81
0.00
6.57
10.28
2.81
0.00
0.603
0
8816.53
10.02
2.73
0.00
5.98
9.96
2.73
0.00
0.637
0
8527.45
9.99
2.66
0.00
5.38
9.62
2.66
0.00
0.670
0
8235.95
9.96
2.54
0.00
4.80
9.26
2.54
0.00
0.754
0
7523.39
9.89
2.26
0.00
3.47
8.31
2.26
0.00
0.838
0
6866.96
9.82
2.00
0.00
2.37
7.32
2.00
0.00
10.1487 = maximum stage elevation
3.04109 = maximum discharge
Memorial Missionary
Baptist Church - Option B
10 yr STORM
18 �� a
,I
16
i;$�.�sl��'�Iv
14 I I a1 �„; ` I d�i�-
tM tl��'���RiN'ir�s'I�°'°�'r1
-"3fi�)4� 4tii n �I�A�• s hK k ,�ti�� ern, s 1� it
SA 12 I n. f a ekF•F l�h�l
�
,i4it�
I�'if rr 1 I err" - f �� ` L Sa, 1 5 i Y'11 t P T �j, t 1.
w 10.I,*
�r ��+' i�; �' f I�kr ` ;a ,j�{���-�, }a„�—INFLOW (cfs)
,V
8 , , ! �a , �, x�+ �r �_.... OUTFLOW (cfs}
(j �',^�,ArQl�[.'. �Itrc+ ki,p 1.,,4 r.r t y Nr
in B,��� r 1. fib if 4 �i i >.`SJ ' , nl�. ,��iY fl± • y F+}
Q
RA Ii'e �t , r�s •f `' 1j' .yL i}�, �w .� '�
2
10,
0.000 0.200 0.400 0.600 0.800 1.000
Time (hrs)