SW8150522_Historical File_20160519

Job No.14025
Date: 5/24/16
TRIPP ENGINEERING? P.C.
419 Chestnut Street, Wilmington, NC 28401
Phone: [phone] • FAX: [phone]
Email: [e-mail]
LETTER OF TRANSMITTAL
To: NCDENR
Attention: Steve Pusey
Subject: Ross Technology Park SW8 150522 MOD
FAX TRANSMITTAL: NUMBER OF PAGES INCLUDES COVER
I am sending you: ( X ) ATTACHED ( ) UNDER SEPARATE COVER
( ) Prints ( ) Tracings ( ) Copy of letter ( ) Specifications ( X ) Other
Copies Item No Description
1 Engineer's Certification
BY:
These are transmitted as checked below:
( ) For Approval ( X ) For Your Use ( ) Sign & Return ( ) Review
Remarks: Please contact us with any questions or comments. Thank you.
cc:
Signed:_ Phil TrioD
RECEIVED
MAY 252016

Pusey, Steven
From: Monica Valsi <[e-mail]>
Sent: Thursday, May 19, 2016 11:30 AM
To: Pusey, Steven; 'Phillip Tripp'
Subject: RE: Ross Technology Park - Additional Info
Attachments: RossTechPk WetDet O&M page 3.pdf
Hey Steve,
Attached is the revised page 3 of the 0&M Agreement.
Thank you,
Monica
-----Original Message -----
From: Pusey, Steven [mailto:[e-mail]]
Sent: Thursday, May 19, 2016 10:12 AM
To: Phillip Tripp ([e-mail]) <[e-mail]>; Monica Valsi
([e-mail]) <[e-mail]>
Subject: Ross Technology Park - Additional Info
I just reviewed the plans and application for Ross Technology Park. It appears that the Pond O&M Agreement
needs to be revised. Please reference page 3 of this agreement which has a diagram of the pond. According
to the stormwater plans, the elevations should be as follows:
Main pond:
Sediment Removal Elevation = 30.5'
Bottom Elevation = 29.5'
Forebay:
Sediment Removal Elevation = 32.5'
Bottom Elevation = 31.5'
Also, please remember to correct the cleanout depths associated with the main pond and forebay; should be
5' and 3' respectively.
Please submit ASAP. An email response will suffice and I can just insert this into the 0&M Agreement.
Thanks,
Steve
Steven G. Pusey
Environmental Engineer
Division of Energy, Mineral and Land Resources - State Stormwater Program Department of Environmental
Quality
910 796 7215 office

910 796 7334 direct
steven.pusey@ ncden r.gov<mailto:steven.pusey@ ncden r.gov>
127 Cardinal Drive Ext.
Wilmington, NC 28405
[cid:image005.png@01D1B1B6.D9A6DA50]
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Casmer, Jo
From: Casmer, Jo
Sent: Monday, March 07, 2016 3:10 PM
To: '[e-mail]'; Tripp Engineering (tdppengeec.rr.com)
Subject: Ross Technology Park; SW8150522 and Lot 2R Ross Technology Park; SW8 150524
The Wilmington Regional Office of the Division of Energy, Mineral, and Land Resources (Stormwater Section)
received the Stormwater Permit Applications and $505.00 fees on February 25, 2016 for the two referenced
projects. These project have been assigned to Steve Pusey and you will be notified if additional information is
needed. Please be advised that the construction of built -upon area may not commence until the Stormwater
Permits are issued.
Jo Casmer
Administrative Assistant for DEMLR/Stormwater Section
North Carolina Department of Environmental Quality
Department of Environmental Assistance & Customer Service
910 796-7336 office
910 350-2004 fax
io.casmer0_ncdenr.uov
127 Cardinal Drive Extension
Wilmington, NC 28405
NC. -:f�othilntg Compares-..,
Email correspondence to and from this address is subject to the
Alorth Carolina Public Records Law and may be disclosed to third parties.

Completeness Itevie Checklist
Project Name: .� /d �� Received Date: 095
Project Location: K �� Accepted Date: �S I,
Paperwork Emailed Engineer on:
upplement(s) (1 original per BMP) BMP Type(s):
M with correct/original signatures (1 original per BMP except LS/VFS and swales)
application with correct/original signatures
orp or LLC: Sig. Auth. per SoS or letter
505 (within 6mo)
FilSoils Report with SHWT
�C�lculations (signed/sealed)
ElNo obvious errors
Density includes common areas, etc
��d Restrictions, if subdivided:
Plans
ets ai s (roads, cul-de-sacs, curbs, sidewalks, BMPs, Buildings, etc)
L_JGrading �etlands: Delineated or No Wetlands
/ici Map ayout (proposed BUA dimensions)
Legend IDA Maps Project Boundaries
eed
❑Email
Email
lbw(Note t®
Address: Design Engineer
Address: Owner
tevieWe
Infiltration
Wet Pond
Offsite
Soils Report
®Soils Report
®PE Cert for Master Lot #:
SHWT:
SHWT:
®Deed Rest for Master Lot # Matches Master
Bottom:
PP:
BUA Permitted (Master): sf
Visited:
BUA Proposed (Offsite): sf
rvuu1L1LP11d1 mrormavon'.
vermirtea Proposed: Proposed: Proposed:
BUA (sf)
DA (sf)
PP (el)
SHWT (el)
Depth (ft)
SA (sf)

TRIPP ENGINEERING, P.C.
41 419 Chestnut Street
Wilmington, North Carolina 28401
Phone: [phone] • FAX: [phone]
February 24, 2016
NCDENR
Division of Energy, Mineral and Land Resources
127 Cardinal Drive
Wilmington, NC 28405-3845
Attn: Mr. Steven Pusey
Re: Ross Technology Park
Permit No. SW8150522
TE 14025
Dear Steven:
We are requesting a modification to existing stormwater permit SW8 150522 for
the Ross Technology Park commercial subdivision located in Leland, NC. Enclosed please
find the following items for review:
• 2 sets of plans
• $505 check
• Narrative
• Stormwater application — one original and one copy
• Wet Detention Basin Supplement „�,
• Operation and Maintenance Agreement ' �':"' ~--�°
• Calculations '
• Deed Restrictions
FEB 2 5 2016
• Soils Report BY:
• USGS map
• Secretary of State info.
• Copy of the Deed
Please review for approval and contact us with any questions, comments or if you
need additional information. Thank you.
Sincerely,
Tripp Engineering, P.C. r
�n FEB 2 5 2015
l"
Monica L. Valsi, E.I.
w
MLV:dcb
Enc.

TE 14025
Stormwater Drainage System & Erosion Control
Narrative
Ross Technology Park - Modification
Brunswick County NC
The Ross Technology Park project is a previously permitted three (3) lot commercial
subdivision located on the northwest corner of Industrial Boulevard NE and Commerce
Drive NE in Brunswick County, NC PID # 218903412627. The entire site is
approximately 12.33 acres of land. 5,562 sf / 0.13 acres of wetlands exist on the project
site.
Ross Technology Park still proposes two (2) buildable lots with a wet detention basin on
the third lot, utility extensions and built upon area on the two (2) lots. Lot 1 impervious
area remains unchanged and proposes 11,000 sf of building, 21,800 sf of asphalt, 560 sf
of concrete and 106,240 sf of impervious for future development. The total impervious
area for Lot 1 is 139,600 si Lot 2R impervious area has been reduced and proposes
10,000 sf of building, 25,850 sf of asphalt, 595 sf of concrete ano ervious
for future development. The total impervious area for Lot 2R is 131,600 sf Proposed
impervious area for this pro�ec is now 271,200 sf in lieu of 336,900 sf or 50% of the
entire site. The estimated amount of disturbed area is 11.5 acres.
The site will have one drainage area. All outflow from the drainage basin will drain to an
existing ditch located on the northwest corner of the project site, to a an unnamed
tributary to Rowell Branch; classification C:Sw, Index No. 18-77-1-1-1, in the Cape
Fear River Basin. All built upon areas (BUAs) will be collected and routed to the wet
detention basin.
The drainage area will be treated by a wet detention basin sized to collect the first 1.5" of
runoff storm and 90% TSS removal. The wet detention basin is designed to meet or
exceed current County and State requirements and is designed for high density projects.
The pond will be sized to hold the required pre/post development volume difference for
the 1- and 10-yr, 24-hr storm events. The pond has also been designed to include a 40-
foot emergency spillway to handle flow from a 100-yr. storm event. Outflow from the
wet detention basin will be to an existing drainage ditch.
FEB 2 5 2016

TE 14025
Prior to clearing of the site, one temporary construction entrance and temporary silt fence
will be installed. The wet detention basin will be constructed to include the proposed
forebay. The parking areas and building locations will then be graded. Underground
utilities, including the stormwater drainage system will be installed and inlet protection
put into place. The proposed buildings will be constructed followed by paving, sidewalk
installation, final site grading, and stabilization of the site and landscaping. Temporary
erosion control measures will remain in -place until such time as when areas are
stabilized. Permanent measures include permanent stands of grass and energy
dissipaters. Specific measures and directions to the contractor are noted on the plans.
Please refer to Sheet C5 for detailed erosion control measures and construction sequence.

02/19/2016 Ross Technology Park 14025
MLV Stormwater Pond Calculations
Total Drainage Area
sq. ft.
acres
11.04
Impervious Area
Land Use
sq. ft.
acres
Lot 1 Building, Asphalt &Concrete
0.77
Lot 2R Building, Asphalt & Concrete
"'( . . ,N,'
0.84
Future Lot 1
�[
2.44
Future Lot 2R
l
2.18
Lots
0.00
Total
271,200
6.23
ow1111WOL01 �aiwlauulla.
Time of Concentration:
Hydraulic Length (L) =
change in Height (H) =
Tc = (L3 /H)'3es / 128
9.44 min.
Flow for 1 year, 24 hour 3torm , :
QPRE _ (CPRE) x (11) x (Area)
8.61 cis
QPosT = (CPosT) x (1,) x (Area)
26.83 cis
Detention Pond Design:
Does Area Drain to SA Waters? n
% impervious = 0.564
= 56.4%
CPRE = 0.2
CPOST _ (% imp.)(.95)+(1 °% imp.)(.20)
0.62
1, = 3.90 in/hr
l,o = 7.23 in/hr
Flow for 10 year, 24 hour Storm (Q,o):
QPRE _ (CPRE) x (l,o) x (Area)
= 16.97 cis
QPosT = (CPosT) x (110) x (Area)
49.73 cfs
Rtntp Siirfnpa Aran RennirpA e+ nn-1 ..^^I.
Pond side slopes = 3 :1
Depth b/w Bot. of V.S. & 4.50
Bot. Pool =
SA/DA = 0.0570 for �,�' 7*�',-7+,,
(Chart for 90°% TSS Removal for Wet
Detention Pond without Vegetative Filter
Red SA = SA/DA x(Total Drainage Area
27,423 sq. ft.
Provided SA = 31,212 sq. ft.
Main Pond Size: Forebay Pond Size:
Elevation Surface Area Incr. Vol Cuml. Vol. Elevation Surf. Area Incr, Vol, Cum1. Vol
ft.) (sq. ft.c ft. s
Top of Bank c 94,692 213.751 Top of Bankd0f; . C2 67t0 33,878 67,691
Temp. Pool, 28.532.27,500 119,059 Temp. Pool 30^9r75 13,639 33,814
Top of V.S. �;p y 26;467 12,317 91,559 Perm. Pool °STrff,410'` 4,061 20,175
Perm. Pool -, 22 8p2. 10,541 79,242 Bot. of V.S�pQ )a $'+ " 16,114 16,114
Bot. of V.S. ;1 19.35p Q 68,702 68,702 Bot. Pool I*Qa 0 0
Bot. of Pool R <. °µ ^�:?.-" « 0 0
Provided Normal Main Pond Volume:
Bottom SA = 11,174 sq. ft.
Bottom of VS SA= 19,360 sq. ft.
Permanent Pool SA = 22,802 sq. ft.
Vol. = [((PP SA + Bottom VS SA)/2) x (PP el. - Bottom VS el.)]
+ [((Bottom VS SA + Bottom Pool SA)/2) x (Bottom VS el. - Bottom Pool el.)]
79,242 cu.ft.
Fore bay:
Provided Normal Forebay Pond Volume
Bottom of Pool SA= 5,056 sq. ft.
Permanent Pool SA = 8,410 sq. ft.
Vol. = [(P.P. SA + Bottom SA) / 2] x (P.P. el. - Bottom el.)
= 20,175 cu. ft. Depth= 3.00 ft
Required Forebay Volume 18%-22% required)
Vol. = 22°% of Permanent Pool volume of Pond and Forebay
21,872 cu.ft.
Volume required to contain from design storm(ft3)= 33,517
Therefore, maximum sta a is between stages and cumulative volumes (main pond plus forebay):
Stage
Cuml.
Volume
35.50
0
40.00
182,025
Total Provided PP Volume
99,416 cu.ft.
Actual °% of Forebay Volume
20.29
Using Interpolation to determine stage at volume = 33,517
Maximum Stage (feet) = 36.33
Therefore set Temporary Pool Elevation at or higher than Maximum Stage
14025 Smaller Pond Calcs.xlsx 1 of 4
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02/19/2016 moss Technology Park 14025
MLV Stormwater Pond Calculations
Pond Size for Determining Storage Volume:
Elev. SA Incr. Vol. Cum. Vol.
(ft) (sq.ft
.) (cu.ft.) (cu.ft.)
Temp.
Pool 37.00 38,307 36,886 53,555
Top of V.S. 36.00 •` • 16,669 16,669
Perm. Pool 35.50 31,212 0 0
Provided Storage Volume:
Vol. _ [((PP SA + Top of VS SA)/2) x (Top of VS Elev. — PP Elev.)]
+ [((Top of VS SA+TP SA)/2) x (fP Elev. - Top of VS Elev.)]
Vol. = 53,555 cu. ft.
State Volume Req. for Storage of first 1.5" runoff:
Rv = .05+ .009(% imp)
0.557
V= (Design rainfall)(Rv)(Drainage Area)
33,517 cu.ft.
Outlet Structure DeslQn:
Flow for 2-day drawdown:
for Min. Volume required of stormwater,
Q = Min. Vol. Req. / 172,800 sec. (2-days)
0.194 cfs
Required Area of Pipe for 2-dav drawdown:
A= Q/ [Cd x SQRT(2 xx h)]
Cd = 0.6
g = 32.2 ft./sz
h = (T.P. elev.- N.P. Elev.) /3
0.50 ft.
A = 0.0570 sq. ft.
Diameter of Pipe for 2-day drawdown:
DIA. = SQRT[(A x 4) / pi]
= 0.2693 ft.
= 3.23 in.
Drawdown Calculation
Orifice Used=
Drawdown rate= 0.167 cfs
Drawdown time= 2.32 days
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 16 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
0.62
= 7.23 in. for a 10 yr. Storm
A = 11.04 Acres
= 49.73 cis
Flow for 5-day drawdown:
for Min. Volume required of stormwater,
Q = Temp. Pool Vol. / 432,000 sec. (5-days)
0.078 cfs
Required Area of Pipe for 5-day drawdown:
A= Q/ [Cd x SQRT(2 x g x h)]
C'd = 0.6
g = 32.2 ft./S2
h = (F.P. elev. - N.P. Elev.)/3
0.5 ft.
A = 0.0228 s . ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
0.1703 ft.
2.04 in.
Q= CwxLxH1.5
H = [Q 1(Cw x L)]-3
Cw = 3
1.02 ft.
Peak elevation = flood pool elevation + H
38.02 ft.
14025 Smaller Pond Cales.xlsx 2 of 4
.) (cu.ft.) (cu.ft.)
Temp.
Pool 37.00 38,307 36,886 53,555
Top of V.S. 36.00 •` • 16,669 16,669
Perm. Pool 35.50 31,212 0 0
Provided Storage Volume:
Vol. _ [((PP SA + Top of VS SA)/2) x (Top of VS Elev. — PP Elev.)]
+ [((Top of VS SA+TP SA)/2) x (fP Elev. - Top of VS Elev.)]
Vol. = 53,555 cu. ft.
State Volume Req. for Storage of first 1.5" runoff:
Rv = .05+ .009(% imp)
0.557
V= (Design rainfall)(Rv)(Drainage Area)
33,517 cu.ft.
Outlet Structure DeslQn:
Flow for 2-day drawdown:
for Min. Volume required of stormwater,
Q = Min. Vol. Req. / 172,800 sec. (2-days)
0.194 cfs
Required Area of Pipe for 2-dav drawdown:
A= Q/ [Cd x SQRT(2 xx h)]
Cd = 0.6
g = 32.2 ft./sz
h = (T.P. elev.- N.P. Elev.) /3
0.50 ft.
A = 0.0570 sq. ft.
Diameter of Pipe for 2-day drawdown:
DIA. = SQRT[(A x 4) / pi]
= 0.2693 ft.
= 3.23 in.
Drawdown Calculation
Orifice Used=
Drawdown rate= 0.167 cfs
Drawdown time= 2.32 days
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 16 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
0.62
= 7.23 in. for a 10 yr. Storm
A = 11.04 Acres
= 49.73 cis
Flow for 5-day drawdown:
for Min. Volume required of stormwater,
Q = Temp. Pool Vol. / 432,000 sec. (5-days)
0.078 cfs
Required Area of Pipe for 5-day drawdown:
A= Q/ [Cd x SQRT(2 x g x h)]
C'd = 0.6
g = 32.2 ft./S2
h = (F.P. elev. - N.P. Elev.)/3
0.5 ft.
A = 0.0228 s . ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
0.1703 ft.
2.04 in.
Q= CwxLxH1.5
H = [Q 1(Cw x L)]-3
Cw = 3
1.02 ft.
Peak elevation = flood pool elevation + H
38.02 ft.
14025 Smaller Pond Cales.xlsx 2 of 4
Outlet Structure Check:
Using a 4' x 4' Basin,
Perimeter L = 16 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp.)(.25)
0.62
= 7.23 in. for a 10 yr. Storm
A = 11.04 Acres
= 49.73 cis
Flow for 5-day drawdown:
for Min. Volume required of stormwater,
Q = Temp. Pool Vol. / 432,000 sec. (5-days)
0.078 cfs
Required Area of Pipe for 5-day drawdown:
A= Q/ [Cd x SQRT(2 x g x h)]
C'd = 0.6
g = 32.2 ft./S2
h = (F.P. elev. - N.P. Elev.)/3
0.5 ft.
A = 0.0228 s . ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
0.1703 ft.
2.04 in.
Q= CwxLxH1.5
H = [Q 1(Cw x L)]-3
Cw = 3
1.02 ft.
Peak elevation = flood pool elevation + H
38.02 ft.
14025 Smaller Pond Cales.xlsx 2 of 4

02/19/2016 Ross Technology Park 14025
MLV Stormwater Pond Calculations
Storage Volume - Non SA Waters - Minimum Volume Required
Volume of Runoff = V = (3630) (Design Rainfall Depth) (Rv) (Drainage Area)
where
Rv = 0.05+0.009(IA)
Rv = Runoff Coefficient = storm runoff (inches) / storm rainfall (inches)
IA Impervious Fraction = Impervious portion of the drainage area (acres) / Drainage area (acres)
IA=
56.4 %
Rv =
0.557
Design Rainfall Depth =
1.50 in.
Drainage Area = 11.04 acres
Volume = 33,517 ft3
14025 Smaller Pond Calcs.xlsx 3 of 4

02119/2016 Ross Technology Park
MLV Stormwater Pond Calculations
14025
Average Depth Calculated
Permanent Pool Volume (ft) 99,416.0
Permanent Pool Area (ft) 31,212.0
Option 1 - Average Depth (ft) 3.19
Bottom Vegetated Shelf Area (ft) 27195.0
Permanent Pool Area (ft) 31212.0
Bottom Pond Area (ft2) 11174.0
Depth (ft) 4.5
Option 2 - Average Depth (ft) 3.64
Average Depth for use in Table (ft) 3.64
Round to nearest 0.5 for SA/DA (ft) 3.50
14025 Smeller Pond Calcs.xlsx 4 of 4

02h9/2016 Ross Technology Park 14025
MLV Stormwater Pond Routing
1-year 24hr Storm
r
WATERSHED DATA
BEFORE DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF.'C'
0.2
TIM. OF CONCENTR
10.00 MIN
INTENSITY 1 YR
3.45 IN/HR
Qa = 7.62 CFS
Qa = PRE -DEVELOPED PEAK DISCHARGE
COMPUTE DEPTH OF RUNOFF
INCHES 1yr, 24hr PRECIPITATION
CN = 73 ((98*0.57)+(39*0.43)) = 73
S = (1000/CN)-10
S = 3.77
Depth (D) = (P-0.2S)112/(P+0.8S)
D = 1.29 IN -1yr, 24hr RUNOFF DEPTH
SET VOLUME AND COMPUTE TIME TO PEAK
Tp = [(43.5)(D)(Area)] / Qp
Tp = 26.29 MINUTES
Storage Volume Req'd = (Qp. Qa)*Tp*1.39*60
35,076 cu. ft.
CALCULATE Ks AND b
SET NORMAL ELEVATION AT = 35.50 feet
AFTER DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.62
TIME OF CONCENTR
10.00 MIN
INTENSITY 1 YR
3.45 IN/HR
Qp = 23.61 CFS
Qp = POST -DEVELOPED PEAK DISCHARGE
S
Z
CONTOUR
INCR
ACCUM
CONTOUR
AREA
VOL
VOL
STAGE
In S
In Z
Z est
(sq ft)
(cu ft)
(cu ft)
(ft)
(ft)
35.50
31,398
0
0
0
0
0
0.00
36.00
35,522
16,730
16,730
0.5
9.7250
-0.6931
0.50
37.00
38,307
36,915
53,645
1.5
10.8901
0.4055
1.48
38.00
41,254
39,781
93,425
2.5
11.4449
0.9163
2.47
39.00
44,287
42,771
136,196
3.5
11.8218
1.2528
3.50
40.00
47,406
45,847
182,042
4.5
12.1120
1.5041
4.57
Regression Output:
Ks = 36073
b = 1.08
Constant 10.47
G:U0BSV014114025-ROSS TECHNOLOGY1CalcMSmaller Pond114025 Smaller Pond routinglyr24hulu

02/19/2016 Ross Technology Park 14025
MLV Stormwater Pond Routing
1-year 24hr Storm
CHAINSAW METHOD FOR
RISER BARREL ROUTING
STORM DATA
Qa =
7.62 cfs
Qp =
23.61 cfs
Tp =
26.3 min
dT =
4 min
BASIN DATA
Ks =
b=
Zo =
Normal water elev =
Box Weir Length =
Cw =
Zcr =
35073
1.08
35.50 It
35.50 ft
Peak Outflow =
0.26 cfs
1 g ft
Peak Stage =
36.89 ft
3.0
Maximum Storage =
50,225 cu ft
38.65 ft
Control Holes:
State Orifice:
Dia = 3 00 in
Dd 36 in
Cd 0.59
Zi 32.25 ft
Inv = 35.50 ft
Weir: L = 15 in
Inv = 37.00 ft
Emergency Overflow Weir: L = 480.0 in
Inv = 39.00 ft
Time
Inflow
Storage
Stage
Outflow
W Riser
Weir
Orifice
Weir
(Emergency Overflow)
(min)
(cfs)
(cu ft)
(ft)
(cfs)
(cfs)
(cfs)
(cfs)
(cfs)
0
0.0
0
35.50
0
0
0.00
0
0.00
4
1.3
0
35.50
0
0.00
0.00
0
0.00
8
5.0
318
35.51
0.00
0.00
0.00
0.00
0.00
12
10.2
1516
35.56
0.01
0.00
0.00
0.01
0.00
16
15.8
3961
35.63
0.03
0.00
0.00
0.03
0.00
20
20.4
7735
35.76
0.08
0.00
o.nn
0.08
0.00
24
23.2
12620
35.89
0.12
0.00
0.00
0.12
0.00
28
23.4
18153
36.04
0.15
0.00
0.00
0.15
0.00
32
21.0
23726
36.20
0.18
0.00
0.00
0.18
0.00
36
17.3
28717
36.33
0.20
0.00
0.00
0.20
0.00
40
14.2
32818
36.44
0.21
0.00
0.00
0.21
0.00
44
11.6
36171
36.53
0.22
0.00
0.00
0.22
0.00
48
9.5
38910
36.60
0.23
0.00
0.00
0.23
0.00
52
7.8
41147
36.66
0.24
0.00
0.00
0.24
0.00
56
6.4
42971
36.71
0.24
0.00
0.00
0.24
0.00
60
5.3
44455
36.74
0.25
0.00
0.00
0.25
0.00
64
4.3
45663
36.78
0.25
0.00
0.00
0.25
0.00
68
3.6
46642
36.80
0.25
0.00
0.00
0.25
0.00
72
2.9
47434
36.82
0.25
0.00
0.00
0.25
0.00
76
2.4
48072
36.84
0.26
0.00
0.00
0.26
0.00
80
2.0
48585
36.85
0.26
0.00
0.00
0.26
0.00
84
1.6
48994
36.86
0.26
0.00
0.00
0.26
0.00
88
1.3
49318
36.87
0.26
0.00
0.00
0.26
0.00
92
1.1
49573
36.88
0.26
0.00
0.00
0.26
0.00
96
0.9
49771
36.88
0.26
0.00
0.00
0.26
0.00
100
0.7
49922
36.89
0.26
0.00
0.00
0.26
0.00
104
0.6
50035
36.89
0.26
0.00
0.00
0.26
0.00
108
0.5
50116
36.89
0.26
0.00
0.00
0.26
0.00
112
0.4
50171
36.89
0.26
0.00
0.00
0.26
0.00
116
0.3
50205
36.89
0.26
0.00
0.00
0.26
0.00
G:WOBS12014114025-ROSS TECHNOLOGY1CaleslSmaller Pond114025 Smaller Pond routing1y24hr.xlsx

Dill912016 Ross Technology Park 14025
MLV Stormwater Pond Routing
1-year 24hr Storm
120
0.3
50222
36.89
0.26
0.00
0.00
0.26
0.00
124
0.2
50225
36.89
0.26
0.00
0.00
0.26
0.00
128
0.2
50215
36.89
0.26
0.00
0.00
0.26
0.00
132
0.1
50196
36.89
0.26
0.00
0.00
0.26
0.00
136
0.1
50170
36.89
0.26
0.00
0.00
0.26
0.00
140
0.1
50137
36.89
0.26
0.00
0.00
0.26
0.00
144
0.1
50098
36.89
0.26
0.00
0.00
0.26
0.00
140
0.1
50055
36.89
0.26
0.00
0.00
0.26
0.00
152
0.1
50009
36.89
0.26
0.00
0.00
0.26
0.00
156
0.0
49960
36.89
0.26
0.00
0.00
0.26
0.00
160
0.0
49908
36.88
0.26
0.00
0.00
0.26
0.00
164
0.0
49856
36.88
0.26
0.00
0.00
0.26
0.00
168
0.0
49800
36.88
0.26
0.00
0.00
0.26
0.00
172
0.0
49743
36.88
0.26
0.00
0.00
0.26
0.00
176
0.0
49686
36.88
0.26
0.00
0.00
0.26
0.00
180
0.0
49628
36.88
0.26
0.00
0.00
0.26
0.00
184
0.0
49569
36.88
0.26
0.00
0.00
0.26
0.00
188
0.0
49509
36.87
0.26
0.00
0.00
0.26
0.00
192
0.0
49449
36.87
0.26
0.00
0.00
0.26
0.00
196
0.0
49389
36.87
0.26
0.00
0.00
0.26
0.00
200
0.0
49328
36.87
0.26
0.00
0.00
0.26
0.00
204
0.0
49267
36.87
0.26
0.00
0.00
0.26
0.00
208
0.0
49206
36.87
0.26
0.00
0.00
0.26
0.00
212
0.0
49145
36.87
0.26
0.00
0.00
0.26
0.00
216
0.0
49084
36.86
0.26
0.00
0.00
0.26
0.00
220
0.0
49022
36.86
0.26
0.00
0.00
0.26
0.00
224
0.0
48961
36.86
0.26
0.00
0.00
0.26
0.00
228
0.0
48899
36.86
0.26
0.00
0.00
0.26
0.00
232
0.0
48838
36.86
0.26
0.00
0.00
0.26
0.00
236
0.0
48776
36.86
0.26
0.00
0.00
0.26
0.00
240
0.0
48715
36.85
0.26
0.00
0.00
0.26
0.00
244
0.0
48653
36.86
0.26
0.00
0.00
0.26
n n
248
0.0
48591
36.85
0.26
0.00
0.00
0.26
0.00
252
0.0
48530
36.85
0.26
0.00
0.00
0.26
0.00
256
0.0
48468
36.85
0.26
0.00
0.00
0.26
0.00
260
0.0
48407
36.85
0.26
0.00
0.00
0.26
0.00
264
0.0
48345
36.84
0.26
0.00
0.00
0.26
0.00
268
0.0
48284
36.84
0.26
0.00
0.00
0.26
0.00
272
0.0
48223
36.84
0.26
0.00
0.00
0.26
0.00
276
0.0
48161
36.84
0.26
0.00
0.00
0.26
0.00
280
0.0
48100
36.84
0.26
0.00
0.00
0.26
0.00
284
0.0
48038
36.84
0.26
0.00
0.00
0.26
0.00
288
0.0
47977
36.84
0.26
0.00
0.00
0.26
0.00
292
0.0
47916
36.83
0.26
0.00
0.00
0.26
0.00
296
0.0
47855
36.83
0.25
0.00
0.00
0.25
0.00
300
0.0
47794
36.83
0.25
0.00
0.00
0.25
0.00
304
0.0
47732
36.83
0.25
0.00
0.00
0.25
0.00
308
0.0
47671
36.83
0.26
0.00
0.00
0.25
0.00
312
0.0
47610
36.83
0.25
0.00
0.00
0.25
0.00
316
0.0
47549
36.82
0.25
0.00
0.00
0.25
0.00
320
0.0
47488
36.82
0.25
0.00
0.00
0.25
0.00
324
0.0
47427
36.82
0.25
0.00
0.00
0.25
0.00
328
0.0
47366
36.82
0.25
0.00
0.00
0.25
0.00
332
0.0
47305
36.82
0.25
0.00
0.00
0.25
0.00
336
0.0
47245
36.82
0.25
0.00
0.00
0.26
0.00
340
0.0
47184
36.81
0.25
0.00
0.00
0.25
0.00
344
0.0
47123
36.81
0.25
0.00
0.00
0.25
0.00
348
0.0
47062
36.81
0.25
0.00
0.00
0.25
0.00
352
0.0
47002
36.81
0.25
0.00
0.00
0.25
0.00
356
0.0
46941
36.81
0.25
0.00
0.00
0.25
0.00
300
0.0
46881
36.81
0.25
0.00
0.00
0.25
0.00
364
0.0
46820
36.81
0.25
0.00
0.00
0.25
0.00
368
0.0
46759
36.80
0.25
0.00
0.00
0.25
0.00
372
0.0
46699
36.80
0.25
0.00
0.00
0.25
0.00
376
0.0
46639
36.80
0.25
0.00
0.00
0.25
0.00
380
0.0
46578
36.80
0.25
0.00
0.00
0.25
0.00
384
0.0
46518
36.80
0.25
0.00
0.00
0.25
0.00
388
0.0
46458
36.80
0.25
0.00
0.00
0.25
0.00
392
0.0
46397
36.79
0.25
0.00
0.00
0.25
0.00
396
0.0
46337
36.79
0.25
0.00
0.00
0.25
0.00
400
0.0
46277
36.79
0.25
0.00
0.00
0.25
0.00
404
0.0
46217
36.79
0.25
0.00
0.00
0.25
0.00
408
0.0
46157
36.79
0.25
0.00
0.00
0.25
0.00
G:%JOB%2014114025-ROSS TECHNOLOG=alcs%Smaller Pond114025 Smaller Pond rouling1yr24hr.xlsx

02/19/2016 Ross Technology Park 14025
MLV Stormwater Pond Routing
10-year 24hr Storm
WATERSHED DATA
BEFORE DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.2
TIME OF CONCENTR
10.00 MIN
INTENSITY (10 YR)
6.43 IN/HR
Qa = 14.20 CFS
Qa = PRE -DEVELOPED PEAK DISCHARGE
COMPUTE DEPTH OF RUNOFF
P = :` 17.:.. 7, INCHES 10yr, 24hr PRECIPITATION
CN = 73 ((98*0.57)+(39*0.43)) = 73
S = (1000/CN)-10
S = 3.77
Depth (D) = (P-0.2S)"2/(P+0.8S)
D = 3.90 IN -10yr, 24hr RUNOFF DEPTH
SET VOLUME AND COMPUTE TIME TO PEAK
Tp = [(43.5)(D)(Area)] / Qp
Tp = 42.51 MINUTES
Storage Volume Req'd = (Qp-Qa)*Tp*1.39*60
105,704 cu. ft.
CALCULATE Ks AND b
SET NORMAL ELEVATION AT = 35.50 feet
AFTER DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.62
TIME OF CONCENTR
10.00 MIN
INTENSITY (10 YR)
6.43 IN/HR
Qp = 44.01 CFS
Qp = POST -DEVELOPED PEAK DISCHARGE
S
Z
CONTOUR
INCR
ACCUM
CONTOUR
AREA
VOL
VOL
STAGE
In S
In Z
Z est
(sq ft)
(cu ft)
(cu ft)
(ft)
(ft)
35.50
31,398
0
0
0
0
0
0.00
36.00
35,522
16.730
16,730
0.5
9.7250
-0.6931
0.50
37.00
38,307
36,915
63,645
1.5
10.8901
0.4055
1.48
38.00
41,254
39,781
93,425
2.5
11.4449
0.9163
2.47
39.00
44,287
42,771
136,196
3.5
11.8218
1.2528
3.50
40.00
47,406
45,847
182,042
4.5
12.1120
1.5041
4.57
Regression Output:
Ks = 35073
b = 1.08
Constant 10.47
G:%J0BS12014114025-R0SS TECHNOLOGMaicslSmaller Pond114025 Smaller Pond routing10yr24hr.xlsx

01119/2016 Ross Technology Park
MLV Stormwater Pond Routing
10-year 24hr Storm
14025
CHAINSAW METHOD FOR
RISER BARREL ROUTING
STORM DATA
Qa =
14.20 cfs
Qp =
44.01 cfs
Tp =
42.5 min
dT =
4 min
BASIN DATA
Ks =
35073
b =
1.08
Zo =
35.50 ft
Normal water elev =
35.50 ft
Peak Outflow -=
8.25 cfs
Box Weir Length =
16 ft
Peak Stage =
38.64 ft
Cw =
3.0
Maximum Storage =
120,970 cu ft
Zcr =
38.65 ft
Control Holes:
State Orifice:
Dia =
3.00 in
Dd =
36 in
Inv =
35.50 ft
Cd =
0.59
Weir.
L =
15 in
Zi =
32.25 ft
Inv =
37.00 ft
Emergency Overflow Weir:
L =
480.0 in
Inv =
39.00 ft
Time
Inflow
Storage
Stage
Outflow
W Riser
Weir
Orifice
Weir
(Emergency Overflow)
(min)
(cfs)
(cu ft)
(ft)
(cfs)
(cfs)
(cfs)
(cfs)
(Cfs)
0
0.0
0
35.50
0
0
0.00
0
0.00
4
1.0
0
35.50
0
0.00
0.00
0
0.00
8
3.7
229
35.51
0.00
0.00
0.00
0.00
0.00
12
8.1
1125
35.54
0.01
0.00
0.00
0.01
0.00
16
13.7
3068
35.61
0.02
0.00
0.00
0.02
0.00
20
20.0
6344
35.71
0.06
0.00
n nn
0.06
0.00
24
26.4
11122
35.85
0.11
0.00
0.00
0.11
0.00
28
32.5
17441
36.02
0.15
0.00
0.00
0.16
0.00
32
37.7
25212
36.24
0.18
0.00
0.00
0.18
0.00
36
41.5
34217
36.48
0.21
0.00
0.00
0.21
0.00
40
43.6
44129
36.74
0.24
0.00
0.00
0.24
0.00
44
43.9
54542
37.00
0.27
0.00
0.00
0.27
0.00
48
42.2
65008
37.27
0.82
0.00
0.00
0.30
0.52
52
38.8
74946
37.52
1.71
0.00
0.00
0.32
1.39
56
34.5
83853
37.74
2.70
0.00
0.00
0.34
2.37
60
30.5
91475
37.92
3.67
0.00
0.00
0.35
3.32
64
27.0
97911
38.08
4.57
0.00
0.00
0.36
4.21
68
23.9
103290
38.21
5.36
0.00
0.00
0.37
4.99
72
21.1
107733
38.32
6.05
0.00
0.00
0.3R
5.67
76
18.7
111351
38.40
6.63
0.00
0.00
0.39
6.24
80
16.5
114246
38.47
7.10
0.00
0.00
0.39
6.71
84
14.6
116511
38.53
7.48
0.00
0.00
0.40
7.09
88
13.0
118228
38.57
7.77
0.00
0.00
0.40
7.38
92
11.5
119471
38.60
7.99
0.00
0.00
0.40
7.59
96
10.1
120305
38.62
8.13
0.00
0.00
0.40
7.73
100
9.0
120787
38.63
8.21
0.00
0.00
0.40
7.81
104
7.9
120970
38.64
8.25
0.00
0.00
0.40
7.84
108
7.0
120896
38.63
8.23
0.00
0.00
0.40
7.83
112
6.2
120607
38.63
8.18
0.00
0.00
0.40
7.78
116
5.5
120135
38.62
8.10
0.00
0.00
0.40
7.70
G:WOBS12014114025-ROSS TECHNOLOGY1CelcMSmaller Pond114025 Smaller Pond routing10yr24hr.xlsx

02;1912016 Ross Technology Park 14025
MLV Stormwater Pond Routing
10-year 24hr Storm
120
4.9
119511
38.60
7.99
0.00
0.00
0.40
7.59
124
4.3
118761
38.58
7.86
0.00
0.00
0.40
7.47
128
3.8
117907
38.56
7.72
0.00
0.00
0.40
7.82
132
3.4
116969
38.54
7.56
0.00
0.00
0.40
7.16
136
3.0
115964
38.52
7.39
0.00
0.00
0.39
7.00
140
2.6
114907
38.49
7.21
0.00
0.00
0.39
6.82
144
2.3
113809
38.46
7.03
0.00
0.00
0.39
6.64
148
2.1
112682
38.44
6.85
0.00
0.00
0.39
6.46
152
1.8
111535
38.41
6.66
0.00
0.00
0.39
6.27
156
1.6
110376
38.38
6.47
0.00
0.00
0.39
6.09
160
1.4
109211
38.35
6.29
0.00
0.00
0.38
5.90
164
1.3
108047
38.32
6.10
0.00
0.00
0.38
5.72
168
1.1
106887
38.30
5.92
0.00
0.00
0.38
5.54
172
1.0
105736
38.27
5.74
0.00
0.00
0.38
5.36
176
0.9
104597
38.24
5.56
0.00
0.00
0.38
5.19
180
0.8
103472
38.21
5.39
0.00
0.00
0.37
5.02
184
0.7
102365
38.19
5.22
0.00
0.00
0.37
4.85
188
0.6
101276
38.16
5.06
0.00
0.00
0.37
4.69
192
0.5
100207
38.14
4.9n
0.00
0.00
0.37
4.54
196
0.5
99159
38.11
4.75
0.00
0.00
0.37
4.38
200
0.4
98134
38.08
4.60
0.00
0.00
0.36
4.24
204
0.4
97131
38.06
4.46
0.00
0.00
0.36
4.10
208
0.3
96150
38.04
4.32
0.00
0.00
0.36
3.96
212
0.3
95193
38.01
4.18
0.00
0.00
0.36
3.82
216
0.3
94259
37.99
4.05
0.00
0.00
0.36
3.70
220
0.2
93348
37.97
3.93
0.00
0.00
0.36
3.57
224
0.2
92461
37.95
3.81
0.00
0.00
0.35
3.45
228
0.2
91595
37.93
3.69
0.00
0.00
0.35
3.34
232
0.2
90753
37.90
.3.58
0.00
0.00
0.35
3.23
236
0.1
89932
37.88
3.47
0.00
0.00
0.35
3.12
240
0.1
89133
37.87
3.37
0.00
0.00
0.35
3.02
244
0.1
88355
37.85
3.26
0.00
0.00
0.35
2.92
248
0.1
87598
37.83
3.17
0.00
0.00
0.34
2.82
252
0.1
86861
37.81
3.07
0.00
0.00
0.34
2.73
256
0.1
86143
37.79
2.98
0.00
0.00
0.34
2.64
260
0.1
85446
37.77
2.90
0.00
0.00
0.34
2.56
264
0.1
84766
37.76
2.81
0.00
0.00
0.34
2.48
268
0.1
84105
37.74
2.73
0.00
0.00
0.34
2.40
272
0.0
83462
37.73
2.66
0.00
0.00
0.34
2.32
276
0.0
82836
37.71
2.58
0.00
0.00
0.34
2.25
280
0.0
82226
37.70
2.51
0.00
0.00
0.33
2.18
264
0.0
81633
37.68
2.44
0.00
0.00
0.33
2.11
288
0.0
81055
37.67
2.37
0.00
0.00
0.33
2.04
292
0.0
80492
37.65
2.31
0.00
0.00
0.33
1.98
296
0.0
79944
37.64
2.25
0.00
0.00
0.33
1.92
300
0.0
79411
37.63
2.19
0.00
0.00
0.33
1.86
304
0.0
78891
37.61
2.13
0.00
0.00
0.33
1.80
308
0.0
78384
37.60
2.07
0.00
0.00
0.33
1.75
312
0.0
77891
37.59
2.02
0.00
0.00
0.33
1.69
316
0.0
77410
37.58
1.97
0.00
0.00
0.32
1.64
320
0.0
76941
37.56
1.92
0.00
0.00
0.32
1.59
324
0.0
76484
37.55
1.87
0.00
0.00
0.32
1.54
328
0.0
76038
37.54
1.82
0.00
0.00
0.32
1.50
332
0.0
75603
37.53
1.77
0.00
0.00
0.32
1.45
336
0.0
75179
37.52
1.73
0.00
0.00
0.32
1.41
340
0.0
74765
37.51
1.69
0.00
0.00
0.32
1.37
344
0.0
74361
37.50
1.65
0.00
0.00
0.32
1.33
348
0.0
73967
37.49
1.61
0.00
0.00
0.32
1.29
352
0.0
73582
37.48
1.57
0.00
0.00
0.32
1.25
356
0.0
73207
37.47
1.53
0.00
0.00
0.32
1.22
360
0.0
72840
37.46
1.50
0.00
0.00
0.31
1.18
364
0.0
72481
37.45
1.46
0.00
0.00
0.31
1.15
368
0.0
72131
37.45
1.43
0.00
0.00
0.31
1.12
372
0.0
71789
37.44
1.40
0.00
0.00
0.31
1.08
376
0.0
71454
37.43
1.36
0.00
0.00
0.31
1.05
380.
0.0
71128
37.42
1.33
0.00
0.00
0.31
1.02
384
0.0
70808
37.41
1.30
0.00
0.00
0.31
0.99
388
0.0
70495
37.40
1.28
0.00
0.00
0.31
0.97
392
0.0
70190
37.40
1.25
0.00
0.00
0.31
0.94
396
0.0
69890
37.39
1.22
0.00
0.00
0.31
0.91
400
0.0
69598
37.38
1.19
0.00
0.00
0.31
0.89
404
0.0
69311
37.38
1.17
0.00
0.00
0.31
0.86
408
0.0
69031
37.37
1.14
0.00
0.00
0.31
0.84
G1JOBS12014114025-ROSS TECHNOLOGY1Calcs%Smaller Pond114025 Smaller Pond routing10yr24hr.xlsx

02119/2016 Ross Technology Park 14025
MLV Stormwater Pond Routing
100-year 24hr Storm
WATERSHED DATA
BEFORE DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.2
TIME OF CONCENTR
10.00 MIN
INTENSITY 100 YR)
8.48 IN/HR
Qa = 18.72 CFS
Qa = PRE -DEVELOPED PEAK DISCHARGE
COMPUTE DEPTH OF RUNOFF
P = _ ' "": {.10 INCHES 100yr, 24hr PRECIPITATION
CN = 73 ((98*0.57)+(39*0.43)) = 73
S = (1000/CN)-10
S = 3.77
Depth (D) = (P-0.2S)"2/(P+0.8S)
D = 6.57 IN-100yr, 24hr RUNOFF DEPTH
SET VOLUME AND COMPUTE TIME TO PEAK
Tp = [(43.5)(D)(Area)] / Qp
Tp = 54.35 MINUTES
Storage Volume Re;'d = (Qp-Qa)*Tp*1.39*60
178,231 cu. ft.
CALCULATE Ks AND b
SET NORMAL ELEVATION AT = 35.50 feet
AFTER DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.62
TIME OF CONCENTR
10.00 MIN
INTENSITY 100 YR
8.48 IN/HR
Qp = 68.04 CFS
Qp = POST -DEVELOPED PEAK DISCHARGE
S
Z
CONTOUR
INCR
ACCUM
CONTOUR
AREA
VOL
VOL
STAGE
In S
In Z
Z est
(sq ft)
(cu ft)
(cu ft)
(ft)
(ft)
35.50
31,398
0
0
0
0
0
0.00
36.00
35,522
16,730
16,730
0.5
9.7250
-0.6931
0.50
37.00
38,307
36,915
53,645
1.5
10.8901
0.4055
1.48
38.00
41,254
39,781
93,425
2.5
11.4449
0.9163
2.47
39.00
44,287
42,771
136,196
3.5
11.8218
1.2528
3.50
40.00
47,406
45,847
182,042
4.5
12.1120
1.5041
4.57
Regression Output:
Ks = 35073
b = 1.08
Constant 10.47
GAJOSS12014114025-ROSS TECHNOLOG'ACaleslSmaller Pond114025 Smaller Pond routing100y24hr.xlsx

0019/2016 Ross Technology Park 14025
MLV Stormwater Pond Routing
100-year 24hr Storm
CHAINSAW METHOD FOR
RISER BARREL ROUTING
STORM DATA
Qa =
18.72 cfs
Qp =
58.04 cfs
Tp =
54.4 min
dT =
4 min
BASIN DATA
Ks =
35073
b =
1.08
Zo =
35.50 ft
Normal water elev =
35.50 It
Box Weir Length =
16 ft
Cw =
3.0
Zcr =
38.65 ft
Dd =
36 in
Cd =
0.59
Zi =
32.25 It
Peak Outflow =
34.81
Peak Stage =
39.24 ft
Maximum Storage =
146,460 cu ft
Control Holes:
State Orifice:
Dia =
3.00 in
Inv =
35.50 ft
Weir:
L =
15 in
Inv =
37.00 ft
Emergency Overflow Weir:
L =
480.0 in
Inv =
39.00 ft
Time
Inflow
Storage
Stage
Outflow
W Riser
Weir
Orifice
Weir
(Emerge cy
(min)
(cfs)
(cu ft)
(ft)
(Cfs)
(ems)
`SOverftow)
(cis)
(cfs)
0
0.0
0
35.50
0
0
0.00
0
0.00
4
0.8
0
35.50
0
0.00
0.00
0
0.00
8
3.0
185
35.51
0.00
0.00
0.00
0.00
0.00
12
6.7
917
35.53
0.00
0.00
0.00
0.00
0.00
16
11.6
2526
35.59
0.02
0.00
0.00
0.02
0.00
20
17.3
5293
35.67
0.05
0.00
0.00
0.05
0.00
24
23.7
9441
35.80
0.10
0.00
0.00
0.10
0.00
28
30.4
15111
35.96
0.13
0.00
0.00
0.13
0.00
32
37.0
22376
36.16
0.17
0.00
0.00
0.17
0.00
36
43.2
31218
36.40
0.20
0.00
0.00
0.20
0.00
40
48.6
41535
36.67
0.24
0.00
0.00
0.24
0.00
44
53.0
53147
36.97
0.27
0.00
0.00
0.27
0.00
48
56.1
65803
37.29
0.88
0.00
0.00
0.30
0.58
52
57.8
79059
37.62
2.15
0.00
0.00
0.33
1.82
56
57.9
92410
37.95
3.80
0.00
0.00
0.35
3.45
60
56.5
105397
38.26
5.69
0.00
0.00
0.38
5.31
64
53.6
117595
38.55
7.67
0.00
0.00
0.40
7.27
68
49.5
128630
38.82
12.92
3.31
0.00
0.41
9.19
72
45.0
137416
39.03
22.36
11.11
0.53
0.43
10.82
76
40.9
142853
39.16
29.56
17.25
7.36
0.44
11.87
80
37.2
145576
39.22
33.49
20.65
12.37
0.41
12.40
84
33.8
146460
39.24
34.81
21.79
14.17
0.44
12.58
88
30.7
146214
39.23
34.44
21.47
13.66
0.44
12.53
92
27.9
145316
39.21
33.10
20.31
11.85
0.44
12.35
96
2.5.4
144067
39.18
31.28
18.74
9.49
0.44
12.11
100
23.0
142643
39.15
29.26
17.00
7.01
0.44
11.83
104
20.9
141149
39.12
27.20
15.23
4.70
0.43
11.54
108
19.0
139645
39.08
25.20
13.52
2.70
0.43
11.25
112
17.3
138164
39.04
23.29
11.90
1.13
0.43
10.96
116
15.7
136723
39.01
21.51
10.39
0.13
0.43
10.69
G:WOW2014114025-ROSS TECHNOLOGY\CalcslSmaller Pond114025 Smaller Pond routing100yr24hr.xlsx

02A M016 Ross Technology Park 14025
MLV Stormwater Pond Routing
100-year 24hr Storm
120
14.3
135333
38.98
19.85
9.00
0.00
0.42
10.43
124
13.0
133995
38.95
18.32
7.72
0.00
0.42
10.18
128
11.8
132712
38.92
16.92
6.56
0.00
0.42
9.94
132
10.7
131481
38.89
15.64
5.51
0.00
0.42
9.71
136
9.7
130299
38.86
14.47
4.55
0.00
0.42
9.50
140
8.9
129164
38.83
13.40
3.70
0.00
0.42
9.29
144
8.0
128072
38.80
12.44
2.93
0.00
0.41
9.09
148
7.3
127018
38.78
11.56
2.25
0.00
0.41
8.90
152
6.6
125997
38.76
10.78
1.65
0.00
0.41
8.72
156
6.0
125004
38.73
10.08
1.12
0.00
0.41
8.55
160
5.5
124034
38.71
9.47
0.68
0.00
0.41
8.38
164
5.0
123078
38.69
8.94
0.33
0.00
0.41
8.21
168
4.5
122129
38.66
8.52
0.07
0.00
0.40
8.04
172
4.1
121171
38.64
8.28
0.00
0.00
0.40
7.88
176
3.7
120172
38.62
8.11
0.00
0.00
0.40
7.71
180
3.4
119124
38.59
7.93
0.00
0.00
0.40
7.53
184
3.1
118037
38.57
7.74
0.00
0.00
0.40
7.34
188
2.8
116921
38.54
7.55
0.00
0.00
0.40
7.16
192
2.6
115782
38.51
7.36
0.00
0.00
0.39
6.97
196
2.3
114628
38.48
7.17
0.00
0.00
0.39
6.78
200
2.1
113465
38.46
6.97
0.00
0.00
0.39
6.58
204
1.9
112296
38.43
6.78
0.00
0.00
0.39
6.39
208
1.7
111128
38.40
6.59
0.00
0.00
0.39
6.21
212
1.6
109963
38.37
6.41
0.00
0.00
0.38
6.02
216
1.4
108805
38.34
6.22
0.00
0.00
0.38
5.84
220
1.3
107657
38.32
6.04
0.00
0.00
0.38
5.66
224
1.2
106521
38.29
5.86
0.00
0.00
0.38
5.48
228
1.1
105399
38.26
5.69
0.00
0.00
0.38
5.31
232
1.0
104293
38.23
5.52
0.00
0.00
0.37
5.14
236
0.9
103205
38.21
5.35
0.00
0.00
0.37
4.98
240
0.8
102134
38.18
5.19
0.00
0.00
0.37
4.82
244
0.7
101083
38.16
5.03
0.00
0.00
0.37
4.66
248
0.7
100051
38.13
4.88
0.00
0.00
0.37
4.51
252
0.6
99041
38.11
4.73
0.00
0.00
0.37
4.37
256
0.6
98051
38.08
4.59
0.00
0.00
0.36
4.23
260
0.5
97082
38.06
4.45
0.00
0.00
0.36
4.09
264
0.5
96134
38.04
4.32
0.00
0.00
0.36
3.96
268
0.4
95208
38.01
4.19
0.00
0.00
0.36
3.83
272
0.4
94302
37.99
4.06
0.00
0.00
0.36
3.70
276
0.3
93418
37.97
3.94
0.00
0.00
0.36
3.58
280
0.3
92556
37.95
3.82
0.00
0.00
0.35
3.47
284
0.3
91713
37.93
3.71
0.00
0.00
0.35
3.35
288
0.3
90892
37.91
3.60
0.00
0.00
0.35
3.25
292
0.2
90090
37.89
3.49
0.00
0.00
0.35
3.14
296
0.2
89308
31.87
3.39
0.00
0.00
0.35
3.04
300
0.2
88546
37.85
3.29
0.00
0.00
0.35
2.94
304
0.2
87803
37.83
3.19
0.00
0.00
0.34
2.85
308
0.2
87078
37.81
3.10
0.00
0.00
0.34
2.76
312
0.1
86372
37.80
3.01
0.00
0.00
0.34
2.67
316
0.1
85684
37.78
2.93
0.00
0.00
0.34
2.59
320
0.1
85013
37.76
2.84
0.00
0.00
0.34
2.50
324
0.1
84359
37.75
2.76
0.00
0.00
0.34
2.43
328
0.1
83721
37.73
2.69
0.00
0.00
0.34
2.35
332
0.1
83100
37.72
2.61
0.00
0.00
0.34
2.28
336
0.1
82495
37.70
2.54
0.00
0.00
0.33
2.21
340
0.1
81904
37.69
2.47
0.00
0.00
0.33
2.14
344
0.1
81329
37.67
2.40
0.00
0.00
0.33
2.07
348
0.1
80768
37.66
2.34
0.00
0.00
0.33
2.01
352
0.1
80221
37.65
2.28
0.00
0.00
0.33
1.95
356
0.1
79688
37.63
2.22
0.00
0.00
0.33
1.89
360
0.0
79168
37.62
2.16
0.00
0.00
0.33
1.83
364
0.0
78661
37.61
2.10
0.00
0.00
0.33
1.78
368
0.0
78166
37.60
2.05
0.00
0.00
0.33
1.72
372
0.0
77684
37.58
2.00
0.00
0.00
0.32
1.67
376
0.0
77213
37.57
1.94
0.00
0.00
0.32
1.62
380
0.0
76754
37.56
1.90
0.00
0.00
0.32
1.57
384
0.0
76306
37.55
1.85
0.00
0.00
0.32
1.53
388
0.0
75868
37.54
1.80
0.00
0.00
0.32
1.48
392
0.0
76442
37.53
1.76
0.00
0.00
0.32
1.44
396
0.0
76025
37.52
1.72
0.00
0.00
0.32
1.40
400
0.0
74618
37.51
1.67
0.00
0.00
0.32
1.36
404
0.0
74220
37.50
1_B3
0.00
0.00
0.32
1.32
408
0.0
73832
37.49
1.59
0.00
0.00
0.32
1.28
G:WOBS12014114025-ROSS TECHNOLOGY%Calcs%Smaller Pond114025 Smaller Pond routing100yr24hr.xlsx

02/19/2016
MLV
Ross Technology Park
Stormwater Pond Routing
100-year 24hr Storm
Clogged
14025
WATERSHED DATA
BEFORE DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.2
TIME OF CONCENTR
10.00 MIN
INTENSITY (100 YR)
8.48 IN/HR
Qa = 18.72 CFS
Qa = PRE -DEVELOPED PEAK DISCHARGE
COMPUTE DEPTH OF RUNOFF
P = �._ 116 INCHES 100yr, 24hr PRECIPITATION
CN = 73 ((98*0.57)+(39*0.43)) = 73
S = (1000/CN)-10
S = 3.77
Depth (D) = (P-0.2S)"2/(P+0.8S)
D = 6.57 IN-100yr, 24hr RUNOFF DEPTH
SET VOLUME AND COMPUTE TIME TO PEAK
Tp = [(43.5)(D)(Area)] / Qp
Tp = 54.35 MINUTES
Storage Volume Req'd = (Qp-Qa)*Tp*1.39*60
= 178,231 cu. ft.
CALCULATE Ks AND b
SET NORMAL ELEVATION AT = 35.50 feet
AFTER DEVELOPMENT
WATERSHED AREA
11.04 ACRES
RUNOFF COEF. 'C'
0.62
TIME OF CONCENTR
10.00 MIN
INTENSITY 100 YR
8.48 IN/HR
Qp = 58.04 CFS
Qp = POST -DEVELOPED PEAK DISCHARGE
S
Z
CONTOUR
INCR
ACCUM
CONTOUR
AREA
VOL
VOL
STAGE
In S
In Z
Z est
(sq ft)
(cu ft)
(cu ft)
(ft)
(ft)
35.50
31,398
0
0
0
0
0
0.00
36.00
35,522
16,730
16,730
0.5
9.7250
-0.6931
0.50
37.00
38,307
36,915
53,645
1.5
10.6901
0.4055
1.48
38.00
41,254
39,781
93,425
2.5
11.4449
0.9163
2.47
39.00
44,287
42,771
136,196
3.5
11.8218
1.2528
3.50
40.00
47,406
45,847
182,042
4.5
12.1120
1.5041
4.57
Regression Output:
Ks = 35073
b = 1.08
Constant 10.47
G:U0BM2014114025-R0SS TECHNOLOGMalcslSmaller Pond114025 Smaller Pond rouling100yr24hr clogged.xlsx

OZ119/2016
Ross Technology Park
MLV
Stormwater Pond Routing
100-year 24hr Storm
Clogged
CHAINSAW METHOD FOR
RISER BARREL ROUTING
STORM DATA
Qa =
18.72 cs
Qp =
58.04 cfs
Tp =
54.4 min
dT =
4 min
BASIN DATA
Ks =
35073
b =
1.08
Zo =
35.50 ft
Normal water elev =
35.50 ft
Peak Outflow =
37.59 cfs
Box Weir Length =
ft
Peak Stage =
39.46 ft
Cw =
3.0
Maximum Storage =
155,839 cu ft
Zcr =
ft
Control Hales:
State Orifice:
Dia =
in
Dd =
in
Inv =
ft
Cd =
0.59
Weir:
L =
480 in
ZI =
ft
Inv =
39.00 ft
Emergency Overflow Weir:
L =
in
Inv
ft
14025
Time
Inflow
Storage
Stage
Outflow
W Riser
Weir
Orifice
Weir
(Emergency Overflow)
(min)
(cfs)
(cu ft)
(ft)
(cfs)
(ds)
( cs
(cls)
(CIS)
0
0.0
0
35.50
0
0
0.00
0
0.00
4
0.8
0
35.50
0
0.00
0.00
0
0.00
8
3.0
185
35.51
0.00
0.00
0.00
0.00
0.00
12
6.7
917
35.53
0.00
0.00
0.00
0.00
0.00
16
11.6
2526
35.59
0.00
0.00
0.00
0.00
0.00
20
17.3
5299
35.67
0.00
0-00
0.00
0.00
0.00
24
23.7
9457
35.80
0.00
0.00
0.00
0.00
0.00
28
30.4
15151
35.96
0.00
0.00
0.00
0.00
0.00
32
37.0
22449
36.16
0.00
0.00
0.00
0.00
0.00
36
43.2
31331
36.40
0.00
0.00
0.00
0.00
0.00
40
48.6
41697
36.67
0.00
0.00
0.00
0.00
0.00
44
53.0
53366
36.97
0.00
0.00
0.00
0.00
0.00
48
56.1
66087
37.29
0.00
0.00
0.00
0.00
0.00
52
57.8
79553
37.63
0.00
0.00
0.00
0.00
0.00
56
57.9
93419
37.97
0.00
0.00
0.00
0.00
0.00
60
56.5
107318
38.31
0.00
0.00
0.00
0.00
0.00
64
53.6
120881
38.63
0.00
0.00
0.nn
0.00
0.00
68
49.5
133756
38.94
0.00
0.00
0.00
0.00
0.00
72
45.0
145643
39.22
12.50
0.00
0.00
0.00
12.50
76
40.9
153446
39.41
30.93
0.00
0.00
0.00
30.93
80
37.2
155839
39.46
37.59
0.00
0.00
0.00
37.59
84
33.8
155739
39.46
37.30
0.00
0.00
0.00
37.30
88
30.7
154894
39.44
34.91
0.00
0.00
0.00
34.91
92
27.9
153883
39.42
32.12
0.00
0.00
0.00
32.12
96
25.4
152870
39.39
29.40
0.00
0.00
0.00
29.40
100
23.0
151900
39.37
26.87
0.00
0.00
0.00
26.87
104
20.9
150981
39.35
24.54
0.00
0.00
0.00
24.54
108
19.0
150116
39.33
22.41
0.00
0.00
0.00
22.41
112
17.3
149303
39.31
20.47
0.00
0.00
0.00
20.47
116
15.7
148539
39.29
18.71
0.00
0.00
0.00
18.71
G:U0aS12014114025-ROSS TECHNOLOGMaleslSmaller Pond114025 Smaller Pond roWngl00yr24hr clogged.Au

02M9/2016
Ross Technology Park
MLV
Stormwater Pond Routing
14025
100-year 24hr Storm
Clogged
120
14.3
147821
39.27
17.09
0.00
0.00
0.00
17.09
124
13.0
147146
39.26
15.62
0.00
0.00
0.00
15.62
128
11.8
146512
39.24
14.28
0.00
0.00
0.00
14.28
132
10.7
145916
39.23
13.05
0.00
0.00
0.00
13.05
136
9.7
145356
39.21
11.93
0.00
0.00
0.00
11.93
140
8.9
144830
39.20
1 n 91
0.00
0.00
0.00
10.91
144
8.0
144335
39.19
9.98
0.00
0.00
0.00
9.98
148
7.3
143870
39.18
9.13
0.00
0.00
0.00
9.13
152
6.6
143433
39.17
8.35
0.00
0.00
0.00
8.35
156
6.0
143022
39.16
7.65
0.00
0.00
0.00
7.65
160
5.5
142635
39.15
7.00
0.00
0.00
0.00
7.00
164
5.0
142272
39.14
6.41
0.00
0.00
0.00
6.41
168
4.6
141930
39.13
5.87
0.00
0.00
0.00
5.87
172
4.1
141609
39.13
5.38
0.00
0.00
0.00
5.38
176
3.7
141367
39.12
4.93
0.00
0.00
0.00
4.93
180
3.4
141022
39.11
4.51
0.00
0.00
0.00
4.51
184
3.1
140755
39.11
4.14
0.00
0.00
0.00
4.14
188
2.8
140503
39.10
3.79
0.00
0.00
0.00
3.79
192
2.6
140266
39.09
3.48
0.00
O.On
0.00
3.48
196
2.3
140043
39.09
3.19
0.00
0.00
0.00
3.19
200
2.1
139833
39.08
2.93
0.00
0.00
0.00
2.93
204
1.9
139636
39.08
2.69
0.00
0.00
0.00
2.69
208
1.7
139450
39.08
2.47
0.00
0.00
0.00
2.47
212
1.6
139275
39.07
2.27
0.00
0.00
0.00
2.27
216
1.4
139110
39.07
2.08
0.00
0.00
0.00
2.08
220
1.3
138955
39.06
1.91
0.00
0.00
0.00
1.91
224
1.2
138809
39.06
1.76
0.00
0.00
0.00
1.76
228
1.1
138671
39.06
1.62
0.00
0.00
0.00
1.62
232
1.0
138542
39.05
1.49
0.00
0.00
0.00
1.49
236
0.9
138420
39.05
1.37
0.00
0.00
0.00
1.37
240
0.8
138305
39.05
1.26
0.00
0.00
0.00
1.26
244
0.7
138196
39.05
1.16
0.00
0.00
0.00
1.16
248
0.7
138094
39.04
1.07
0.00
0.00
0.00
1.07
252
0.6
137998
39.04
0.99
0.00
0.00
0.00
0.99
256
0.6
137907
39.04
0.91
0.00
0.00
0.00
0.91
260
0.5
137821
39.04
0.84
0.00
0.00
0.00
0.84
264
0.5
137741
39.03
0.77
0.00
0.00
0.00
0.77
268
0.4
137665
39.03
0.71
0.00
0.00
0.00
0.71
272
0.4
137593
39.03
0.66
0.00
0.00
0.00
0.66
276
0.3
137525
39.03
0.61
0.00
0.00
0.00
0.61
280
0.3
137461
39.03
0.56
0.00
0.00
0.00
0.56
284
0.3
137401
39.03
0.52
0.00
0.00
0.00
0.52
288
0.3
137344
39.03
0.48
0.00
0.00
0.00
0.48
292
0.2
137290
39.02
0.44
0.00
0.00
0.00
0.44
296
0.2
137239
39.02
0.41
0.00
0.00
0.00
0.41
300
0.2
137191
39.02
0.38
0.00
0.00
0.00
0.38
304
0.2
137146
39.02
0.35
0.00
0.00
0.00
0.35
308
0.2
137103
39.02
0.33
0.00
0.00
0.00
0.33
312
0.1
137063
39.02
0.30
0.00
0.00
0.00
0.30
316
0.1
137025
39.02
0.28
0.00
0.00
0.00
0.28
320
0.1
136989
39.02
0.26
0.00
0.00
0.00
0.26
324
0.1
136955
39.02
0.24
0.00
0.00
0.00
0.24
328
0.1
136922
39.02
0.23
0.00
0.00
0.00
0.23
332
0.1
136892
39.01
0.21
0.00
0.00
0.00
0.21
336
0.1
136863
39.01
0.20
0.00
0.00
0.00
0.20
340
0.1
136836
39.01
0.18
0.00
0.00
0.00
0.18
344
0.1
136810
39.01
0.17
0.00
0.00
0.00
0.17
348
0.1
136785
39.01
0.16
0.00
0.00
0.00
0.16
352
0.1
136762
39.01
0.15
0.00
0.00
0.00
0.15
356
0.1
136740
39.01
0.14
0.00
0.00
0.00
0.14
360
0.0
136720
39.01
0.13
0.00
0.00
0.00
0.13
364
0.0
136700
39.01
0.12
0.00
0.00
0.00
0.12
368
0.0
136681
39.01
0.11
0.00
0.00
0.00
0.11
372
0.0
136664
39.01
0.10
0.00
0.00
0.00
0.10
376
0.0
136647
39.01
0.10
0.00
0.00
0.00
0.10
380
0.0
136631
39.01
0.09
0.00
0.00
0.00
0.09
384
0.0
136616
39.01
0.09
0.00
0.00
0.00
0.09
388
0.0
136602
39.01
0.08
0.00
0.00
0.00
0.08
392
0.0
136588
39.01
0.08
0.00
0.00
0.00
0.08
396
0.0
136575
39.01
0.07
0.00
0.00
0.00
0.07
400
0.0
136563
39.01
0.07
0.00
0.00
0.00
0.07
404
0.0
136551
s4 n1
0.06
0.00
0.00
0.00
0.06
408
0.0
136540
39.01
0.06
0.00
0.00
0.00
0.06
G:UOBS12014174025-ROSS TECHNOLOGY%CaIcMSmaller Pond114025 Smaller Pond rouling100y24hr clogged.xlsx