SW8040416_COMPLIANCE_20040506

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

05/06/20.04 THU 14:12 FAX [phone] Norris, Kuske, Tunstall
NORRIS, KUSKE, & TUNSTALL J. Phillip Norris, P.E.
CONSULTING ENGINEERS, INC. JamesT Pyrtle, P-E.
2 001/010
John A. Kuske, 111, P.E.
J.A. Kuske, P.E.
C. Lawrence Sneeden, Jr., P.E.
902 Market Street •Wilmington, NC 28401-4733 • Phone [phone] a Fax [phone]
www.andrewandkuske.com • offioe [e-mail]
LETTER OF TRANSMITTAL
To: Laurie Munn
Date: May 6, 2004 Job No. 03020
NC DENR - Wilmington
subject: Waigreens #7919
SWS O40416
WE ARE SENDING YOU VIA FAX
® ATTACHED ❑UNDER SEPARATE COVER
❑ SHOP DRAWINGS ❑ PRINTS C] TRACINGS
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INCLUDING THIS YRANSNIITTAL
Call ' 9'F0 343 9fi53' Ou have an d�fficu
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resre>ving Phis message
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COPIES
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DESCRIPTION
1
04-05-04
Calculations
® AS REQUESTED ❑ FOR REVIEW AND COMMENT ❑ FOR APPROVAL
❑ FOR YOUR USE ❑ FOR BIDS DUE ❑ YOUR PRINTS LOANED TO US
REMARKS_
CC; SIGNED C. Lawrence Sneeden, Jr., P.E., / asn
CONFIDENTIAL AND PRIVILEGED: Information contained in this document Is privileged and confidential, intended for the sole use of the
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return to the address above.

05/06/20.04 THU 14:12 FAX [phone] Norris, Kuske, Tuustall
Z 002/010
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05/06/20.04 TAU 14:12 FAX [phone] Norris, Kuske, Tunstall
9 003/010
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05/06/20.04 THU 14:13 FAX [phone] Norris, Kuske, Tunstall
2 004/010
_
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902Market St. CONSULTING ENGINEERS, INC. Wurri P-�P'risecf Co,LS
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05/06/20.04 THU 14:13 FAX [phone] Norris, Kuske, Tunstall
Z005/010
03020 Ogden Walgreens Type IU 24-hr 2 Yr Rainfall=4.50"
Prepared by Norris, Kuske, & Tunstall Consulting Engineers, Inc. Page 1
HydroCAD® 7.01 _sln OOD479 C 1986-2004 A� lied Microcomputer Systems_ _ 5/6/2004 11:51:40 AM
Subcatchrnent S1: SITE AREA TO INFILTRATION SYSTEM
Runoff - 5.02 cfs,@ 12.14 hrs, Volume= 0.294 af, Depth= 2.26"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Type Ili 24--hr 2 Yr Rainfall=4.50"
_ Area (sf) CN Description
11,800 39 >75% Grass cover, Good, HSG A
56,000 98 Paved parking 8 roofs
67,800 88 Weighted Average
Te Length Slope Velocity Capacity Description
Amin) Sfeet�_(filft_) (ftlsec) _ (cfs)
10.0 Direct Entry,
Pond P1: INFILTRATION BASIN
Inflow Area = 1.556 ac, Inflow Depth = 226" for 2 Yr event
Inflow =
5.02 cfs @
12.14 hrs, Volume=
0.294 of
Outflow =
1.67 cfs @
11.90 hrs, Volume=
0.293 af, Atten= 67%, Lag= 0.0 min
Discarded =
1.67 cfs @
11,90 hrs, Volume=
0.293 of
Primary -
0.00 cfs @
11.00 hrs, Volume=
0.000 of
Routing by Stor-Ind method, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Peak Bev= 45.78' @ 12.49 hrs Surf.Area= 0.121 ac Storage= 0.072 of
P[ug-Flow detention time= 12.7 min calculated for 0.293 of (100% of inflow)
Center -of -Mass det. time= 12.4 min (762.1 - 749.7)
# Invert Avai[.Storaae Storage Descriotion
1
44.80'
0.094 of
30.50'W x 141.00'L x 4.00'H Prismatoid
0.395 of Overall - 0.159 of Embedded = 0.235 of x 40.0% Voids
2
44.80'
0.036 of
6,30'W x 78.00'L x 4.00'H Prismatoidx 2
0.090 of Overall x 40.0% Voids
3
45.30'
0.154 of
47.8"W x 30,0"H x 6.25'L Cultec R-330x 144 Inside #1
4
45.30'
0.005 of
33.6"W x 20.0"H x G.33'L Cultec R-180x 11 Inside #1
0.290 of
Total Available Storage
# Routing Invert Outlet Devices
1 Discarded 0.00' 0.019000 fpm Exfiltration over entire Horizontal area
2 Primary 48.40' 3.0' long x 3.0' high Sharp -Crested Rectangular Weir 2 End Contraction(s)
?iscarded OutFlow Max=1.67 cfs @ 11.90 hrs HW=44.84' (Free Discharge)
1=Exfiltration (Exfiltration Controls 1.67 cfs)
rimary OutFlow Max--0.00 cfs @ 11.00 hrs HW=44.80' (Free Discharge)
2=S harp-C rested Rectangular Weir ( Controls 0.00 cfs)

05/06/20.04 THU 14:13 FAX [phone] Norris, Kuske, Tunstall
1006/010
03020 Ogden Walgreens Type Ill 24hr 10 Yr Rainfall=7.00"
Prepared by Norris, Kuske, & Tunstall Consulting Engineers, Inc. Page 2
HydroCADO 7.01 sln 000479 ® 1986-2004 Applied Microcomputer Systems _ 5/6/2004 11:51:40 AM
Subcatchment S1: SITE AREA TO INFILTRATION SYSTEM
Runoff - 8.56 cfs @ 12.14 hrs, Volume= 0,501 af, Depth= 3.86"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Type III 24-hr 10 Yr Rainfall=7.00"
Area (sn CN Description
11,800 39 >75% Grass cover, Good, HSG A
56,000 98 Paved parking & roofs
67,800 88 Weighted Average
Tc Length Slope Velocity Capacity Description
(min)(feet} (ft/ft) (ft/sec (cfs)
10.0 Direct Entry,
Pond P1: INFILTRATION BASIN
Inflow Area = 1.556 ac, Inflow Depth = 3.86" for 10 Yr event
Inflow =
8.56 cfs @
12.14 hrs,
Volume=
0.501 of
Outflow =
1.67 cfs @
11.74 hrs,
Volume=
0.500 af, Atten= 80%, Lag= 0.0 min
Discarded =
1.67 cfs @
11.74 hrs,
Volume=
0.500 of
Primary =
0.00 cfs @
11.00 hrs,
Volume=
0A00 of
Routing by Stor-Ind method, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Peak Elev= 47.10' @ 12.62 hrs Surf.Area= 0.121 ac Storage= 0.194 of
Plug -Flow detention time= 42.0 min calculated for 0.499 of (100% of inflow)
Center -of -Mass det. time= 41.6 min ( 789.6 - 748.0 )
# Invert Avail.Storage Storage Description
1
44.80'
0,094 of
30.50'W x 141.00'L x 4.00'H Prismatoid
0.395 of Overall - 0.159 of Embedded = 0.235 of x 40.0% Voids
2
44.80'
0.036 of
6.30'W x 78.00'L x 4.00'H Prismatoidx 2
0,090 of Overall x 40.0% Voids
3
45.30'
0.154 of
47.8"W x 30.0"H x 6.25'L Cultec R-330x 144 Inside #1
4
45.30'
0.005 of
33.6"W x 20.0"H x 6.33'L Cultec R-180x 11 Inside #1
0.290 of
Total Available Storage
#
Routing
Invert
Outlet Devices _ -
1
Discarded
0.00'
0.019000 fpm Exfiltration over entire Horizontal area
2
Primary
48.40'
3.0' long x 3.0' high Sharp -Crested Rectangular Weir 2 End Contraction(s)
Discarded OutFlow Max=1.67 cfs @ 11.74 hrs HW=44,84' (Free Discharge)
t--1=Exfiltration (Exfiltration Controls 1.67 cfs)
Primary OutFlow Max=0.00 cfs @ 11.00 hrs HW=44.80' (Free Discharge)
t2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

05/06/20.04 THU 14:13 FAX [phone] Norris, Kuske, Tunstall
&07/010
03020 Ogden Walgreens Type M 24-hr 25 Yr Rainfa11=8.00"
Prepared by Norris, Kuske. & Tunstall Consulting Engineers, Inc. Page 3
HydroCADO 7.01 s/n 000479 © 1986 ,2-004 Applied Microcomputer Systems 5/6/2004 11:61:40 AM
Subcatchment S1: SITE AREA TO INFILTRATION SYSTEM
Runoff = 9.96 cfs @ 12.14 hrs, Volume= 0.583 af, Depth= 4.49"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Type III 24-hr 25 Yr Rainfall=8.00"
Area (sf) CN Description
11,800 39 >75% Grass cover, Good, HSG A
56,000 _ 98 Paved parking &_roofs
67,800 -88 Weighted Average
Tc Length Slope Velocity Capacity Description
_ (min) (feet) (ft/ft)_ (ft/sec) (cfs)
10.0 Direct Entry,
Pond P1: INFILTRATION BASIN
Inflow Area = 1.556 ac, Inflow Depth = 4.49" for 25 Yr event
Inflow - 9.96 cfs @ 12.14 hrs, Volume=
0.583 of
Outflow - 1.67 cfs @ 11.70 hrs, Volume=
0.513 af, Atten= 83%, Lag= 0.0 min
Discarded = 1.67 cfs @ 11.70 hrs, Volume=
0.513 of
Primary - 0.00 cfs @ 11.00 hrs, Volume=
0.000 of
Routing by Star -Ind method, Time Span= 11.00-15.00
hrs, dt= 0.01 hrs
Peak Elev= 47.92' @ 12.66 hrs Surf.Area= 0.121 ac
Storage- 0247 of
Plug -Flow detention time= 55.4 min calculated for 0.511 of (88% of inflow)
Center -of -Mass det. time= 40.8 min ( 788.4 - 747.6)
# Invert Avail.Stora4e Storaae Description
1
44.89
0.094 of
30.50'W x 141.00'L x 4.00'H Prismatoid
0.395 of Overall - 0.159 of Embedded = 0.235 of x 40.0% Voids
2
44.80'
0.036 of
6.30'W x 78.00'L x 4.00'H Prismatoidx 2
0.090 of Overall x 40.0% Voids
3
45.30'
0.154 of
47.8"W x 30.0"H x 6.25'L Cultec R-330x 144 Inside #1
4
45.30'
0.005 of
33.6"W x 20.0"H x 6.33'L Cultec R-180x 11 Inside #1
0.290 of
Total Available Storage
# Routing _ _ Invert Outlet Devices _
1 Discarded 0.00' 0.019000 fpm Exfiltration over entire Horizontal area
2 Primary 48.40' 3.0' long x 3.0' high Sharp -Crested Rectangular Weir 2 End Contraction(s)
Discarded OutFlow Max--1.67 cfs @ 11.70 hrs HW=44.84' (Free Discharge)
t--1=Exfiltration (Exfiltration Controls 1.67 cfs)
Primary OutFlow Max=0.00 cfs @ 11.00 hrs HW=44.80' (Free Discharge)
L2=Sharp-Crested Rectangular Weir ( Controls 0.00 cfs)

05/06/2004 THU 14:13 FAX [phone] Norris, Huske, Tunstall
Z 008/010
03020 Ogden Walgreens Type Ill 24-hr50 Yr Rainfall=9-00"
Prepared by Norris, Kuske, & Tunstall Consulting Engineers, Inc. Page 4
HydroCADO 7.01 sln 000479 _C 1986-2004 Applied Microcomputer Systems 5/6/2004 11:51:40 AM
-- .-...-Subcatchment S1: S1TE,AREA TO INFILTRATION SYSTEM- - --
Runoff = 11.35 cfs @ 12.13 hrs, Volume= 0.665 af, Depth= 5.13"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Type III 24-hr 50 Yr Rainfall=9.00"
Area (sf) CN Description -
11,800 39 >75% Grass cover, Good, HSG A
56,000 _ 98 Paved parkins) & roofs
67,800 88 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) (feet) {ft/ft} (ftlsec) (cfs)
10.0 Direct Entry,
Pond PI; INFILTRATION BASIN
Inflow Area = 1.556 ac, Inflow Depth = 5.13" for 50 Yr event
Inflow =
11.35 cfs @
12.13 hrs,
Volume=
0.665 of
Outflow -
3.11 cfs @
12.53 hrs,
Volume=
0.549 af, Afen= 73%, Lag= 23.9 min
Discarded =
1.67 cfs @
11.66 hrs,
Volume=
0.521 of
Primary -
1.43 cfs @
12.53 hrs,
Volume=
0.028 of
Routing by Stor-Ind method, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Peak Elev= 48.68' @ 12.53 hrs Surf.Area= 0.121 ac Storage= 0.284 of
Plug -Flow detention time= 56.8 min calculated for 0.547 of (82% of inflow)
Center -of -Mass det. time= 37.8 min ( 785.1 - 747.3 )
#
Invert
Avail.Storage
Storage Description
1
44-80'
0.094 of
30.50'W x 141.00'L x 4.00'H Prismatoid
0.395 of Overall - 0.159 of Embedded - 0.235 of x 40.0% Voids
2
44,80'
0.036 of
6.30'W x 78.00'L x 4.00'H Prismatow 2
0.090 of Overall x 40.0% Voids
3
45-30'
0-154 of
47.8'W x 30.0'H x 6.25'L Cultec R-330x 144 Inside #1
4
45.30'
0.005 of
33.6'W x 20.0"H x 6.33'L Cultec R-180x 11 Inside #1
0.290 of
Total Available Storage
#
Routing
Invert Outlet Devices
1
Discarded
0.00' 0.019000
fpm Exfiltration over entire Horizontal area
2
Primary
48.40' 3.0'
long x 3.0' high Sharp -Crested Rectangular Weir 2 End Contraction(s)
Discarded Outflow Max=1.67 cfs @ 11.66 hrs HW=44-84' (Free Discharge)
t1=Exfiltration (Exfiitration Controls 1-67 cfs)
rimary OutFlow Max=1.43 cfs @ 12.53 hrs HW=48.68' (Free Discharge)
2=S h arp-C rested Rectangular Weir (Weir Controls 1.43 cfs @ 1.7 fps)

05/06/2004 THU 14:14 FAX [phone] Norris, Kuske, . Tuifstall
R 009/010
03020 Ogden Walgreens Type 11124-hr 100 Yr Rainfall=10.00"
Prepared by Norris, Kuske, & Tunstall Consulting Engineers, Inc. Page 5
H droCADO 7.01 sln 000479 ® 1986-2004 Applied Microcomputer §ystems 5/6/2004 11:51.41 AM
Subcatchment S1: SITE AREA TO INFILTRATION SYSTEM
Runoff = 12.74 cfs @ 12.13 hrs, Volume= 0.747 af, Depth= 5.76"
Runoff by SCS TR-20 method, UH=SCS, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Type Ill 24-hr 100 Yr Rainfall=10.00" . , „
Area (sf) CN Description
11,800 39 >75% Grass cover, Good, HSG A
56,000 98 Paved parking & roofs
67,800 88 Weighted Average
Tc Length Slope Velocity Capacity Description
(min) _ (feet)(fttft�_(fttsec) (cfs)
10.0 Direct Entry,
Pond P1: INFILTRATION BASIN
Inflow Area = 1.556 ac, Inflow Depth = 5.76" for 100 Yr event
Inflow =
12.74 cfs @
12.13 hrs,
Volume=
0.747 of
Outflow =
6.88 cfs @
12.35 hrs,
Volume=
0.613 af, Aften= 46%, Lag= 13.0 min
Discarded =
1,67 cfs @
11.62 hrs,
Volume=
0.529 of
Primary =
5.21 cfs @
12.35 hrs,
Volume=
0.084 of
Routing by Stor-Ind method, Time Span= 11.00-15.00 hrs, dt= 0.01 hrs
Peak Elev= 49.07' @ 12.35 hrs Surf.Area= 0.121 ac Storage= 0.290 of
Plug -Flow detention time-- 52.4 min calculated for 0.611 of (82% of inflow)
Center -of -Mass det. time= 33.2 min ( 780.3 - 747.1 )
# Invert Avall.Storaae Storage Description
I....._
_....44.80'.
0.094.af
30..50'W x 141.00'L x 4.OWH_P..rismatoid.
0.395 of Overall - 0.159 of Embedded w 0235 of x 40.0% Voids
2
44.89
0.036 of
6.30'W x 78.00'L x 4.00'H Prismatoidx 2
0.090 of Overall x 40.0% Voids
3
45.30'
0,154 of
47.8"W x 30.0"H x 6.25'L Cultec R-330x 144 Inside #1
4
45.30'
0,005 of
33.6'W x 20.0"H x 6.33'L Cultec R-180x 11 InsideAl
0.290 of
Total Available Storage
_#
Routing
Invert
Outlet Devices
1
Discarded
0.00'
_
0.019000 fpm Exfiltration over entire Horizontal area
2
Primary
48.40'
3.0' long x 3,0' high Sharp -Crested Rectangular Weir 2 End Contractions)
Qiscarded Outflow Max=1.67 cfs @ 11.62 hrs HW=44.84' (Free Discharge)
1=Exfiltration (Exfiltration Controls 1.67 cfs)
Primary Outflow Max--4.90 cfs @ 12.35 hrs HW=49.04' (Free Discharge)
t2=S h arp-C rested Rectangular Weir (Weir Controls 4.90 cfs @ 2.7 fps)

06/06/.2404 THU 14:14 FAX [phone] Norris, Auske, Tunstall Z010/010
03020 Ogden Walgreens Type 11124-hr 90 Yr Rainfal1=7.00-
Prepared by Norris, Kuske, & Tunstall Consulting Engineers, Inc.
HydroCAD® 7.01 s/n 000479 © 1986-9004 Annllcri Q....a-...__
Stage -Area -Storage for Pond PT: INFILTRATION BASIN
Elevation
Horizontal
Storage
feet
acres
acre-feet
44.86
0.121
0.000
44.85
0.121
0.002
44.90
0.121
0.005
44.95
0.121
0.007
45.00
0.121
0.010
45.05
0.121
0.012
45.10
0.121
0.015
45.15
0.121
0.017
45.20
0.121
0.019
45.25
0.121
0.022
45.30
0.121
0.024
45.35
0.121
0.029
45.40
0.121
0.034
45.45
0.121
0.039
45.50
0.121
0.044
45,55
0.121
0.049
45.60
0.121
0.054
45.65
0.121
0.059
45.70
0.121
0.064
45.75
0.121
0.069
45.80
0.121
0.074
45.85
0.121
0.079
45.90
0.121
0.084
45.95
0.121
0.089
46.00
0.121
0.094
46.05
0.121
0.098
46.10
0.121
0.103
46.15
0.121
0.108
4620
0.121
0.113
46.25
0.121
0.118
46.30
0.121
0.122
46.35
0,121
0.127
46.40
0.121
0.132
46.45
0.121
0.137
46.50
0.121
0,141
46.55
0.121
0.146
46.60
0.121
0.151
46.65
0.121
0.155
46.70
0.121
0.160
46.75
0.121
0.164
46.80
0.121
0.168
46.85
0.121
0.173
46.90
0.121
0.177
46.95
0.121
0.181
47.00
0.121
0.186
47.05
0.121
0.190
47.10
0.121
0.194
47.15
0.121
0.198
47.20
0.121
0,202
47.25
0.121
0.206
47.30
0.121
0.210
47.35
0.121
0.213
Elevation
Horizontal
Storage
feet
acres
acre-feet
47.40
0.121
0.217
47.45
0.121
0.220
47.50
0.121
0.224
47.55
0.121
0.227
47.60
0.121
0.230
47,65
0.121
0.233
47.70
0.121
0.236
47.75
0.121
0.239
47.80
0.121
0.241
47.85
0.121
0,244
47.90
0.121
0.246
47.95
0.121
0.248
48.00
0.121
0.251
48.05
0.121
0.253
48.10
0.121
0.256
48.15
0.121
0.258
48.20
0.121
0.261
48.26
0.121
0.263
48.30
0,121
0.265
48,35
0,121
0.268
48.40
0.121
0.270
0.273
48.50
0.121
0.275
48.55
0.121
0.278
49.60
0.121
0,280
48.65
0.121
0,282
48.70
0,121
0.285
48.75
0.121
0.287
48.80
0.121
0.290