SW7130601_HISTORICAL FILE_20130520

NORTH CAROLINA
Department of Environmental Qual

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
C� HISTORICAL FILE
(❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
a'�0�'�DS�(�
YYYYMMDD

Aston Soil Works, Inc. May 20, 2013
P.O. Box 86
EXPR
ilpson, NC 27879
JUN 0 4 2013
NC ®ENR
Mike Baldwin
708-D Cromwell Drive
Greenville, NC 27858
Re: Hydraulic Conductivity Testing and Soil Seasonal High Water Table Determination for
Oak Ridge Metal Works stormwater facility in Beaufort County, NC.
Dear Mr. Baldwin,
As requested, soil seasonal high water table and Saturated Hydraulic Conductivity (K�„)
testing was conducted on May 13, 2013 to aid in the design of a stormwater treatment
system.
The method of soil evaluation for seasonal high water table utilized one hand auger
boring to a depth of 96 inches. An enclosed map identifies the approximate location of
the boring conducted in the proposed stormwater treatment area. The findings of this
investigation suggest a seasonal high water table is approximately 12 inches from the
surface. The method of determination was based on the presence of soil morphological
features containing > 2% chroma 2 color or less mottles. The soil profile description
contained:
Ap - 0-5 inches; very dark grayish brown (10YR 3/2) sandy loam; granular
structure; friable.
Bt1 - 5-28 inches; yellowish brown (10YRY5/6) sandy clay loam with many gray
(10YR 6/1) depletions; weak fine subangular blocky structure.
Bt2 — 28-84 inches; yellowish brown (10YRY5/8) sandy clay loam with many light
gray (10YR 7/1) depletions; weak fine subangular blocky structure.
C — 84-96 inches; tight gray (10YR 7/1) loamy sand; single grained; very friable
One Saturated Hydraulic Conductivity (K�,) measurements was also performed adjacent
to the seasonal high water table boring location. The measurements utilized a two inch
diameter auger hole that was bottom planed and brushed prior to each test. A constant
head permeameter was used for testing. The results of testing are presented in the table
below.

Ksat Locaton Hole Depth(in) Head(in) Kam, (in/hr) Equiv. ( cm3/hr)
1 1 11 6 .042 95
If I can be of further assistance feel free to contact me at 252 341 9707.
Sincerely,
Gene Aston
Licensed Soil Scientist # 1261
SOIL S15/-.N.
h1E AS)�,

Test Location Map for Stormwater Facility
❑ak Ridge Metal Works Project
Beaufort County, NC
Power
Pole
#1
•
Test
Location
0 60'
SCALE: t"= 60'
Aston Soil Works, Inc.
2858 Madison Grove
Greenville, NC 27858
Survey
Stake
Page Road

UNITED STATES
DEPARTMENT OF THE INTERIOR
` GEOLOGICAL SURVEY
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U. S. DEPARTMENT OF AGRICULTURE
,SOIL CONSERVATION SERVICE
MA? W.(&
BEAU

BaldwinDesign
Consultants^
STE S. SUBDIVISION DESIGN • SURVEYIVG - PLANNING
3740-B Evans Street Greenville, NC 27834
252-756-1390 252-321-1412(fax)
To: NCDENR
943 Washington Square Mall
Washington, NC 27889
Date: Job No:
6/3/13 13-017
Attention:
Scott Vinson
ZE
Oak Ridge Metal Works £10Z t 0 Nnr
SS3HdX3
We are sending you: 2 Attached ❑ Under separate cover via
❑ Drawings ❑ Plans 0 Prints ❑ Pay Request/
Invoice
❑ Letter ❑ Package El Other
the following:
FJ Specifications
.
iN
y.
2
5/20/13
Stormwater Application
2
5/29/13
Wet Detention Basin Supplement
2
5/20/13
Operation & Maintenance Agreement
2
5/10/13
Narrative & Calculations
2
5120/13
Soils Reports
2
Quad Map
2
Soils Map (Sheet 6 of 20)
1
2/13/13
Copy of Deed
2
6/3/13
Prints of Plan
1
5/20/13
1619
Check for $4000.00
Transmitted as checked below:
x For approval ❑ Approved as noted Resubmit copies for approval
❑ For your use ❑ Approved as submitted Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected copies
❑ For review ❑ Other
Remarks:
Signed: Me [U n Copy to:

For uLNFr use UNLY
Reviewer:1Gt�.Ct�.�
AGA
North Carolina Department of Environment and submit ctt j £M-IY
Natural Resources
NCDENR Request for Express Permit Review rime:
Confirm,
FILL-IN all the information below and CHECK the Permit(s) you are requesting for express review. Call and Email the completed form to the
Environmental Permit Coordinator along with a completed DETAILED narrative, site plan (PDF file) and vicinity map (same items expected it
application package of the project location. Please include this form in the application package.
Asheville Region -Alison Davidson 828-296-4698; alison.davidson g(v)ncdenr.gov
Fayetteville or Raleigh Region -David Lee 919-791.4203; david.lee(ncdenr.gov
Mooresville & Winston Salem Region - Patrick Grogan 704-235-2107, patrick.grogan a(a)ncdenr.gov
Washington Region -Lyn Hardison 252-948.3842, Iyn.hardisona(7ncdenr.gov
Wilmington Region -Janet Russell910-796.7307, janetrussellnancdencgov
Wilmington Region -Cameron Weaver 910-796-7421, cameron.weaver(ancdenr.gov
NOTE: Project application received after 12 noon will be stamped in the following work day.
SW _
SW
SW
SW
SW
Project Name: OAK RIDGE METAL WORKS County: BEAUFORT
Applicant: KEVIN BOYD Company: BLUE GOOSE, LLC EXPRESS
Address: 1151 PAGE ROAD City: WASHINGTON, State: NC Zip: 27889
Phone: [phone], Fax: _ Email: _@_ JUN 04 Z013
Physical Location:AT THE INTERSECTION OF CHERRY RUN ROAD AND PAGE ROAD p�
Project Drains into MITCHELL BRANCH waters - Water classification C, SW, NSW (for classification see- NC DEER
http://h2o.enr.state.nc.us/bims/reports/reportsWB.html)
Project Located in TAR-PAM River Basin. Is project draining to class ORW waters? N, within''/3 mile and draining to class SA waters N or within 1 mile
and draining to class HQW waters? N
Engineer/Consultant: STEVE JANOWSKI Company: J.S. JANOWSKI ENGINEERING
Address: PO BOX 30906 City: GREENVILLE, State: NC Zip: 27833-_
Phone: [phone], Fax: _ _ _, Email: _@
SECTION ONE: REQUESTING A SCOPING MEETING ONLY
❑ Scoping Meeting ONLY ❑ DWQ, ❑ DCM, ❑ DLR, ❑ OTHER:
SECTION TWO: CHECK ONLY THE PROGRAM (S) YOU ARE REQUESTING FOR EXPRESS PERMITTING
❑ 401 Unit ❑ Stream Origin Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions
❑ Intermittent/Perennial Determination: _ # of stream calls - Please attach TOPO map marking the areas in questions
❑ 401 Water Quality Certification ❑ Isolated Wetland (_linear ft or _acres)
❑ Riparian Buffer Authorization ❑ Minor Variance ❑ Major General Variance
® State Stormwater ❑ General ❑ SFR, ❑ SFR < 1 ac. ❑ Bkhd & Bt Rmp, ❑ Clear & Grub, ❑ Utility ❑ Other
❑ Low Density ❑ Low Density -Curb & Gutter _ # Curb Outlet Swales ❑ Off -site [SW _ (Provide permit #)]
® High Density -Detention Pond 1 # Treatment Systems ❑ High Density -Infiltration _ #Treatment Systems
❑ High Density -Bio-Retention _ # Treatment Systems ❑ High Density -SW Wetlands _ # Treatment Systems
❑ High Density -Other _ # Treatment Systems /❑ MOD:❑ Major ❑ Minor ❑ Plan Revision ❑ Redev. Exclusion SW (Provide permit#)
❑ Coastal Management ❑ Excavation & Fill ❑ Bridges & Culverts ❑ Structures Information
❑ Upland Development ❑ Marina Development ❑ Urban Waterfront
® Land Quality ® Erosion and Sedimentation Control Plan with 2_5 acres to be disturbed.(CK # (for DENR use))
SECTION THREE - PLEASE CHECK ALL THAT IS APPLICABLE TO YOUR PROJECT (for both scoping and express meeting request)
Wetlands on Site ❑ Yes ❑ No
Wetlands Delineation has been completed: ❑ Yes ❑ No
US ACOE Approval of Delineation completed: ❑ Yes ❑ No
Received from US ACOE ❑ Yes ❑ No
For DEN R use
Fee SDlitformultioleoermits: (Check# j%>/LI 1
Buffer Impacts: ❑ No ❑ YES: _acre(s)
Isolated wetland on Property ❑ Yes ❑ No
404 Application in Process w/ US ACOE: ❑ Yes ❑ No Permit
mount
SUBMITTAL DATES
Fee
SUBMITTAL DATES
Fee
CAMA
$
Variance (❑ Maj; ❑ Min)74
$
SW (® HD, ❑ LD, ❑ Gen)
$ 31> i;
401:
$
Los
$ - "��
Stream Deter
$
NCDENR EXPRESS June 2011

EXPRESS
JUN 0 4 2013
NC ®ENR ,
BLAUPORT COUh= LAM RECORDS
ROUTING FORM
Land Records Official Date
71808Pc329
(Space Above for Recorder's Use)
FOR REGISTRATION REGISTER OF DEEDS
Jennt Countiv,hi t NC
Beauforl
February 13, 2013 04:25:30 PM
Book me Page 329-332
FEE: $26.00
NC REVENUE STAMP: $1,200.00
INSTRUMENT # 2013000911
NORTH CAROLINA GENERAL WARRANTY DEED
BEAUFORT COUNTY '
This instrument prepared by:
Christian E. Porter, Attorney
1698 E. Arlington Blvd., Greenville, NC 27858
Mail/Box: Grantee, PO Box 2428, Greenville, NC 27836
EXCISE TAX: $1,200.00
Parcel Identifier Nos.: 15021971 and
15021972
The property herein conveyed does not include
the primary residence of the Grantor.
THIS DEED made and entered into this -IAA' day of February, 2013, by and between
GRANTOR
ROGER A. BROOKS and wife,
LESHA C. BROOKS
403 Handy's Point Lane
Bath, NC 27808
GRANTEE
BLUE GOOSE, LLC,
a North Carolina limited liability company
1151 Page Road
Washington, NC 27889
The designation Grantor and Grantee as used herein shall include said parties, their heirs, successors, and assigns, and shall include
singular, plural, masculine, feminine, or neuter, as required by context.
WITNESSETH:
That, Grantor for and in consideration of the sum of Ten Dollars ($10.00) and other valuable
considerations to him in hand paid by the Grantee, the receipt of which is hereby acknowledged, has bargained
and sold and by these presents does hereby bargain, sell, and convey unto Grantee, in fee simple, that certain lot

Deed
Page 2
BK1808PG330
or parcel of land lying and being in Beaufort County, North Carolina and being more particularly described as
follows:
FIRST PARCEL:
Being all of Lot Number 7A containing 4.072 acres as shown on that
map entitled "Beaufort County Industrial Park" by Mayo &
Associates, P.A. dated January 5, 2005 and revised through 5th
revision dated March 19, 2005 recorded in Plat Cabinet G, Slides 51-
8, 51-9, and 51-10, Beaufort County Registry. Reference being made
to said map and the same being incorporated herein for a more
complete and adequate description.
SECOND - PARCEL:
Being Lot. No. 7B containing 1.50 acres as the same is shown on map
entitled "Survey for Beaufort County Industrial Park" dated January
5, 2005, revised through fifth revision dated March 19, 2005, prepared
by Mayo & Associates, P.A., of record in Plat Cabinet G, Slides 51-8,
51-9 andl 51-10, Beaufort County Registry, to which map is
incorporated herein by reference for a more complete and detailed
description.
This conveyance is made subject to Restrictive Covenants appearing
of record in Book 1230, Page 61 of the Beaufort County Registry.
TO HAVE AND TO HOLD the foregoing described lot or parcel of land and all privileges and
appurtenances thereunto belonging or in anywise appertaining unto the said Grantee in fee simple forever.
And Grantor covenants to and with the Grantee that he is seized in fee simple of said premises and has
the right to make this conveyance in fee simple; that the same is free and clear of all encumbrances whatsoever
except for restrictive covenants, if any, of record in the Beaufort County Registry, highway or road rights of
way, any easements of record in the Beaufort County Registry, any and all federal, state or local regulations
related to zoning, land use or development of the property; and ad valorem taxes subsequent to the year 2012;
and that he will forever warrant and defend the title to the same against the lawful claims of all persons
whomsoever.

Deed
Page 3
V1808Pc331
IN TESTIMONY WHEREOF, the said Grantor has hereunto set his hand and seal this the day and year
first above written.
I a
BROOKS
]A (f.
STATE OF NORTH CAROLINA
COUNTY OF [3cnLA-rcr
I certify that the following person(s) personally appeared before me this day, each acknowledging to me
that he or she voluntarily signed the foregoing document for the purpose stated therein and in the capacity
indicated: ROGER A. BROOKS
Witness my hand and Notary Seal this the B6day of February, 2013.
[AFFIX
?oj�N0SARY, 'L
Notary's Signature: Vi %wti'a- ,t t/. (J "e-L
Notary Print Name: Shang W. Parker'
/ / Notary Public
My Commission Expires:; Jr a� �Dl(p

Ex1808Pc332
Deed
Page 4
STATE OF NORTH CAROLINA
COUNTY OF Beau-(brt
I certify that the following person(s) personally appeared before me this day, each acknowledging to me
that he or she voluntarily signed the foregoing document for the purpose stated therein and in the capacity
indicated: LESHA C. BROOKS
Witness my hand and Notary Seal this the f - day of February, 2013.
[AFFIX
,0P�P,
&NOTARY
PUBLIC
My Commission Expires: F)/aglaUl(p
#145086
Notary's Signature: N1Q nal ild. pakkt-
Notary Print Name: s o no,1 W . Pn rKc t'
Notary Public
libel f. erax 6DoS6 , L�-c

J.S. JA.NOWSKI
ENGINEERING, PA
EXPRESS
JUN 04 2013
NCDENR OAK RIDGE METAL WORKS
WASHINGTON, NC
STORM WATER MANAGEMENT
NARRATIVE AND CALCULATIONS
May 10, 2013
Owner:
Blue Goose LLC
1151 Page Street
Washington, NC 27889
41
�N�c^. .. .z..... +�F
l'O nvy 3I11w, Cnvam•ilh: ?;C 78?] ;kXRi 252.71113M
wwlyl�•-.IJELnu}.skicn�irn�,rinl;.cnm islenh,+nianme,ki'tsjan immrint;.:em

f _.S. jA.NOWSKI
®` ENGINEERING, PA
STORM WATER
OAK RIDGE METAL WORKS
r0
H�rwjsj�no,vskien in�erim,.y,n,
NC
May 10, 2013
Owner:
Blue Goose LLC
1151 Page Street
Washington, NC 27889
'.Src,fwilla Nc 278'i'�g9[h ?51.714-3(02'
istepi,cnjunowsk iNsjsiengimn•ring.[Om

J.S. JANOWSKI.
ENGINEERING, PA
GENERAL PROJECT INFORMATION
This project includes the construction of a new building addition, parking lots, storm drainage and a storm
water wet detention pond. Approximately 3755 SF of new buildings will be constructed. The parking lot
and access improvements will account for 31563 SF of new pavement. The property is bounded on the
north by undeveloped land, on the south by Page Road on the east by Cherry Run Road and on the west
by undeveloped land. The site has slopes averaging 0 to 1.5%. Overall, elevations vary from a high point
of 30 feet above sea level to a low point of 24.0 feet above sea level. The soil types on the site are
Goldsboro, Lynchburg and Leaf soils. This project drains to Mitchell Branch and the Tar -Pamlico River
Basin.
STORMWATER INFORMATION
Pre -development, this project site consists of 5.572 acres, with existing slopes averaging from 0% to
1.5% and 35,525 sf of existing Impervious building, pavement and walks of which 1871 sf will be
removed. Existing surface drainage is currently draining towards the west property line where an existing
ditch exists. The proposed development will add 35,318 sf of new and 48,640 sf future impervious area.
Post -development, runoff from 5,10 acres will be collected in a proposed storm drainage system
consisting schedule 40 PVC and reinforced concrete pipe before it is discharged into the proposed wet
detention pond. From the detention pond, the outflow will be discharged into an existing ditch that drains
eastward to towards Mitchell Branch. The remaining 0.472 acres of site will drain to the perimeter swales
on each property line. The total impervious area that will be draining into the new wet detention facility will
be 117,612 sf and will include the existing impervious area and the future.
The purpose of the wet detention pond is to reduce the nitrogen and remove 90% total suspended solids
in the system, and for the attenuation of the peak stormwater flow of the 1-year, 24-hour storm (80%-2yr).
Using the Surface Area to Drainage Area Table for 90% TSS in the Coastal Region, the required surface
area for this pond for the inclusion of future development is 48,640 sf. The proposed pond contains
12,000 sf of surface area.
The breakdown of the impervious areas for this project site area is as follows;
PROJECT SITE AREA BREAKDOWN
Total Project Area Post -Development
New Building Area
Future Building
Existing Building Area
New Employee Parking
New Future Parking
Existing Parking
Existing walks
New walks
Impervious Removed
Total Impervious Area Post -Development
Percent Impervious
wt���+•.'s'ano}. �F:i��nvi��rrrin� coffin
5.10 ac
3,755 sf
30,000 sf
22,500 sf
23,747 sf
18,640 sf
10,798 sf
2,227 sf
7,816 sf
- 1.871 sf
117,612 sf or 2.70 ac
52.94 % for the BMP
C mnvilly NC 2783".4)1106 352 70-3002
ipfCnhenfn nq�cYl:i'iyysjr.nk inr2rinr;5� isr.

Q a) J.S. JANOWSKI
741
h EWGINEFFLING, PA
02-91 �,Iv �
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S. jANObVSKI
CJ754
PO Box 30906
Greenville, NC 27833-0906
[phone]
Oak Ridge Metal Works
5/912013
Storage Volume
FOREBAYVOLUME
surface
dlff.
accum.
Elevation
area
elev
storage
storage
Elevation
Stage
18.00
500
-
18.00
1.00
621
19.00
742
621
19.00
1.0
1.00
884
20.00
1026
1'505
20.00
2.0
1.00
1,184
21.DO
1342
2.689
21.00
3.0
1.00
1,516
22.00
1690
4,205
22.00
4.0
1.00
1.880
23.00
2070
6,085
23.00
5.0
0.50
1,222
23.50
2817
7.307
23.50
5.5
MAIN POND VOLUME
surface
dlff.
accum.
Elevation
area
elev
storage
storage
Elevation
Stage
18.00
2,660
-
MOD
1.00
3,052
19.00
3,444
3,052
19.00
1.0
1.00
3,852
20.00
4,260
6,904
20.00
2.0
1.00
4,684
21.00
5,108
11,588
21.00
3.0
1.00
5,548
22.00
5,988
17,136
22.00
4.0
1.00
6,444
23.00
6,900
23,580
23.00
5.0
0.50
4,021
23.50
9,183
27,601
23.50
5.5
�l'CNN' J
'++N / 111111tivV

).S. JANOWSKI
FiNGINEPING. PA
C-3764
PO Box 30906
Greenville, NC 27833.0906
[phone]
Oak Ridge Metal Works
5/9/2013
Average Permanent Pool Depth Calculation Using Option 2
OPTION 2:
D 40.25 * 1+ AYeQ8o1,omShj7ll1+[AYea8.,,omShj'I+ AYea,,,,,.PonDepth�1A� ( AYeaPenn Pool J ( 2 / A%-eaBOIIOm Shjl J
Permanent Pool Elev = 23.5
Top of Sediment Pool = 18
ITEM
AREA DEPTH
ft` ft
Areap.p.,
12000
AreaB�msh&o
8970
AreaBor,omPond
3160
Depth
5.50

0221
).S. jAt\g0NA,Slu
ig ENGi :'QlfPJ[\'G. PA
C-3754
Po Box 00906
GREEWILLE. NC 27603d906
(252)714. M
STORM WATER DETENTION ROUTING
FOR
OAK RIDGE METAL WORKS
WASHINGTON, NORTH CAROLINA
W%2013
2 Year 24-Hour 510"
N J
2 year storm

Site Conditions Isnedevalopment
Total watershed area
Tmnspoiaeon
Building
Managed Pervious Fla( lawn<2%
Cropland
Wooded
SCS sal croup
Hydraulic Langlh
Vertical Refed
2 yr rainfall
nine of Concentration
channel flow
C.
0.96
CN= 98
C=
1.00
CN- 98
C=
0.20
CN= 73
C.
0.35
CN= 82
C.
0.15
CN= 78
B
Ovedand
400 Channeled
Overland
4 Channelaed
js i f Overland
= H 9.3
128
Composite C based on published values (exhibit 1•Malmm)
Rainfall Intensity = j = 8 p
(ha-710
25
10D
Peak Discharge Q = CIA
5.10 acres
0.30 acres
0.52 acres
4.28 acres
0.00 acres
0.00 acres
100 feel
1 feel
3.88 inches
Channefzed
+
1.6
10.9 minutes
0.33
9
h
132
18
4.57 inchesperhr
203
22
246
23
302
25
6.06 efs (e0%2-year)
2 year storm
2

She Conditions Post Development
Total watershed area
5.10 was
Transporalion
C=
0.95
CN= 9a
0.9a awes
Building
C=
1.00
CN= 98
0.60 aoes
Future Impervious
C.
0.95
CN= 96
1.12 acme
Managed Pervious Flat Lawn 2%
C=
0.20
CN= 73
2.40 awes
Wooded Pervious
C=
0.15
CN= 78
0.00 acres
SCS Sail Group
B
Hydtsupo Length
Chan Imp
240 Channalized
350 feel
Van" Relief
Chan Imp
2 Channelced
2.00 fast
2 yt rainfall
3.88 inches
Design Hydrograph FOmtulatm
Composite CN
1000
5=--10
CAI
Runoff
(P-0.2S�'
4 P+0.8S
Time of Concemra0on
channel flow (no overland)
L° a Al
.I
128
Composite C =
Rainfall intensity= ! = 8
(t +T )
Peak Discharge Q = CIA
Overland
Channelized
6.7
2.1
R
2
h
2
132
111
10
203
22
25
246
23
100
302
25
Time to peak T Vol
' 1.79Q
Storage Required S T„
(Above tat 1.5 inch of runoff pool)
Allowable release at impoundment (pre- bypass) _
Peek rate of Inflow al hnpwndmant (pre,tonsae)
Allowable release at impoundmant(poH-bypess)-
Peak fate of inflow al Impoundment (post-bypese)=
BYPASSED FLOW
Ama(ac) C I(inlhr)
Tmnsponation 0.00 0.95
Roof 0.00 1.00 Qeyp .d 0.00 ch
Managed Pervlou; 0.00 0.2
Wooded 0.00 0.10
Total 0.00 0.10 4.93
2 year etonll
3
66.3
1.59
2.46 Inches
8.8 minutes
0.60
4.93 inches per hr
12.13 cls (80%2-year)
45.0 minutes
18.392 ci
6.06 cds
12.13 cis
6.06 cis
12.13 cfs
Use for setting temporary
pool for Ph 2 designs
(Go%2-yea0

STAGE STORAGE DATA
surface
diA.
accum.
Elevation area
elev
storage
storage
Elevation
Stage
23.50 12,000
0.50
6.600
24.00 14,400
-
6.600
24.00
1
1.00
15.392
25.00 16,384
-
21.992
25.00
2
1.00
17A40
26.00 18.496
-
39.432
26.00
3
1.00
19,816
-
27.00 20.736
Storage elevaWn@n irumum storage volume
59.048 27.00 4
24.79 msl Temporary Pool Elevation Ph 2
z
Computed
_ Storage
Stage
LN(morage) LN(Stage)
Stage
21,992
2
1.98
39.432
3
1050 1.10
3.00
59,048
4
10.99 1.39
4.00
a=
1.40
z
S
K, =
8,437.05
z"
1
2 .
24.30
K, I
24.85 feet msl
Size Outlet Device to, Comm) SIructwe
invert elevation
23.50 feet msl
estimated odllce center elev. =
23.57 feel msl
Average Head Elevation =
24.85 feet msl
Average Head =
0.45 feet
discharged) =
89 cfa
coe@clent of discharge =
0.8
0 of orifice
0,054 cis
Draw down of lemparmy pool
352 days
Orifice equation
Q n C,A 2gh
1.65 inches
SAY 1.75 inches
orifice will drain letup storage in IV. days
2 year slogs
4

Peek Irdlow =
12,13
12.13
Time to Peak =
45.0 min
Orifice
Temp
Structure
Total
Time
Inflow
Outflow
Outflow
Overflow
Outflow
T (min)
O f cfe)
Q I cfc)
0 (of$)
0( ch)
01 CIS)
0
0.00
0.00
0.00
0.00
0.00
3.00
0.13
0.00
0.0D
0.00
0.00
6.00
0.52
0.00
0.00
0.00
0.00
9.00
1.16
0.00
0.00
0.00
0.00
12.00
2.00
0.00
0.00
000
0,00
15.00
303
0.00
0,00
0.00
0.00
18.00
4.19
0.00
0.00
0.00
0.00
21.00
5.42
0.00
0.00
0.00
0.00
24.00
6.69
0,00
0.00
0.00
0.00
27.00
7.93
0.05
0.00
0.00
0.05
30.00
909
0.06
0.00
0.00
0.08
33.00
10.12
0,07
0,00
0.00
0.07
38.00
10.97
0.08
0.00
0.00
0.08
39.00
11.60
0.08
0.00
0.00
0.09
4200,
12.00
0.09
0.21
0.00
0.30
45,00
12.13
0.09
0,54
000
0.64
48.00
12.00
0.10
0.94
0.00
1.04
51.00
11.62
0.10
1.36
0.00
1.46
54.00
10.98
0.11
1.76
0.00
1.86
57.00
10.15
0.11
2.11
0.00
2.22
60,00
9.31
0.11
2.43
0.00
2.55
63.00
8.34
0.12
2.73
0.00
2.86
66.00
7.83
0.12
2,96
(1.00
3.07
69.00
7.18
0.12
3.14
0.00
3.26
72.00
6.58
0.12
3.32
0.00
3.44
75.00
6.04
0.12
3.48
0.00
3.58
7820
5.54
0.12
3.56
0.14
3.81
81.00
5.08
0.12
3.60
0.25
3.98
84.00
4.65
0.12
3.65
0.38
4.16
87.00
4.27
0.12
3.65
0.38
4.16
90.00
3.91
0.12
3.65
0.38
4.16
93.00
3.59
0.12
3.80
0.25
3.98
96,00
3.29
0.12
3.56
0.14
3.81
99.00
3.02
0.12
3,56
0,14
301
102.00
277
0.12
3.46
0,00
3.58
105.00
2.54
0.12
3,41
0.00
3,54
108.00
2.33
0.12
3.37
0.00
3.49
111.00
2.13
0.12
3.32
0.00
3.44
114.00
1.95
0.12
3.23
0,00
3.35
11 Too
1.79
0.12
3.14
0.00
3.26
120.00
1.65
0.12
3.09
0.00
3.21
123.00
1.51
0.12
3.00
0.00
3.12
126.00
1.38
0.12
2.91
0.00
3.03
129.00
1.27
0.12
2.82
0.00
2.94
132,00
1.16
0.12
2.73
0,00
2.85
135.00
1.07
0.12
2.65
0.00
2.77
138.00
0.98
0.12
2.56
0.00
2.68
141.00
0.90
0.12
2.48
0.00
2.59
144.00
0.82
0.12
2.39
0.00
2.51
147.00
0.75
0.12
2.31
0.00
2.43
2 year storm

Stormw+tar routing
PemPool
Temp D of
Top of Box
1.00
16.00
1.75
Spillway
Spillway
Inch
24.85
25.95
T(timemin)
Q( cfs)
Store
Stage
Outflow
Elevation
orifice
Weir
Weir
0
0
-
0.00
0.00
23.50
3.00
0.1
-
0.00
0.00
23.50
0.00
0.0
0.0
6.00
0.5
24
0.02
0.00
23.52
0.00
0.0
0.0
9.00
1.2
118
0.05
0.00
23.56
000
0.0
0.0
12.00
2.0
326
0.10
0.00
23,60
0.00
0.0
0.0
16.00
3.0
687
0.17
0.00
23,67
0.00
0.0
0.0
16.00
4.2
1,232
0.25
0.00
23.75
0.00
0.0
0.0
21A0
5.4
1.985
0.30
0.00
23.66
0.00
0.0
0.0
24.00
6.7
2.982
0.47
0.00
2107
0,00
0.0
0.0
27.00
7.9
4.166
0.60
0,05
24.10
0.05
0.0
0.0
30.00
9,1
5,594
0.75
0.06
24.25
0.06
0.0
0.0
33.00
10.1
7.209
0.89
0.07
24.39
0.07
0.0
0.0
38.00
11.0
9,018
1,05
0.08
24.55
0.08
0.0
0.0
39.00
11.6
10,976
1.21
0.08
24.71
0.08
0.0
0.0
42.00
12.0
13.051
1,36
0.09
24.66
0.09
0.0
0.0
45.00
12.1
15.194
1.52
0.30
25.02
0.09
0.2
0.0
48.00
12.0
17.323
1.67
0.64
25.17
0.10
0.5
0.0
51.00
12.1
19.365
1.81
1.04
25.31
0,10
0.9
0.0
54.00
11.1
21.354
1.94
IA7
25.44
0.11
14
0.0
57.00
10.2
23.082
2.05
1.87
26.55
0,11
1.8
0.0
60.00
9.3
24,573
2.14
2.22
25.64
DA1
2.1
0.0
63.00
8.5
25,849
2.22
2.55
25.72
0.12
2.4
0.0
66.00
7.8
26.927
2.29
2.85
25.79
0.12
2.7
0.0
69.00
7.2
27823
2.34
3.07
Milt
0.12
30
0.0
72.00
6.6
28.561
2.38
3.26
25.68
0.12
3.1
0.0
75.00
6.0
29.160
2.42
344
25.92
0.12
3.3
0.0
7B.00
5.5
29.627
245
3.56
25.95
0,12
3.5
0.0
81.00
5.1
29.979
2.47
3.01
25.97
0.12
3.6
0.1
$4.00
47
30.206
2.48
3.98
25.98
0.12
16
0.2
07.00
4.3
30,328
2.49
4.16
25.99
0.12
3.7
0.4
90.00
3.9
30,348
2.49
4,16
25.99
0.12
3.7
0.4
93.00
3.6
30,304
2.49
4.16
25.99
0,12
3.7
0.4
98.00
3.3
30.201
2.48
3.98
25.90
0.12
3.6
0.2
99M
3.0
30,076
2.47
3.81
25.97
0.12
3.6
0.1
102.00
2.8
29.935
2.47
3.81
26.97
0.12
3.6
0.1
105.00
2.5
29,746
2.45
3.50
25.95
0.12
3.5
0.0
100.00
2.3
29,558
244
3.54
25.94
0,12
3.4
0.0
111.00
2.1
29,341
2.43
3.49
25.93
0.12
3A
0.0
114.00
2.0
29,097
2.42
3.0
25.92
0.12
3.3
0.0
117.00
1.8
26630
2.40
3.35
25.90
0.12
3.2
0.0
120.00
1.6
28,550
2.38
326
25,89
0.12
3.1
0.0
123.00
1.5
25.260
2.37
3.21
25,87
0.12
3.1
0.0
126.00
1.4
27,954
2.35
3.12
25.85
0.12
3.0
0.0
129.00
1.3
27.642
2.33
3.03
23.83
0,12
2.9
0.0
132.00
12
27.325
2.31
2.94
25.81
0.12
2.8
0.0
135.00
1.1
27.005
2,29
2.85
25.79
0.12
2.7
0,0
138.00
1.0
26,684
2.27
2.76
25.77
0.12
2.6
0.0
141.00
0.9
26,363
2.25
2.68
25.75
0.12
2.6
0.0
1M,00
0.6
26,042
2.23
2.59
25.73
0.12
2.5
0.0
147.00
0.8
25.724
2.21
2.51
25.71
0.12
24
0.0
150.00
0.7
25.408
2.19
2.42
25,69
0.11
2.3
0.0
153.00
0.6
25,096
2.17
2.34
25.87
0.11
21
0.0
156.00
0.6
24.789
2.16
2.30
25.66
0.11
2.2
0.0
159.00
0.5
24.479
Z14
2.22
25.64
0.11
2.1
0.0
162.00
0.5
24.176
2,12
2.14
25.62
0.11
2.0
0.0
165.00
0.4
23,879
2.10
2.06
25.60
0.11
1.9
0.0
168.00
0.4
23.588
2.08
1.98
25.58
0.11
1.9
0.0
171.00
0.4
23.306
2.06
1.91
25.56
0.11
1.8
0.0
174, 00
0.3
23,030
2.05
1.57
25.55
0.11
1.8
0.0
177.00
0.3
22,756
2.03
1.79
25.53
0.11
1.7
0.0
180.00
0.3
22.491
2.01
1.72
25.51
0.11
1.6
0.0
183.00
0.3
22.234
1.99
1,65
25.49
0.11
1.5
0.0
186.00
0.2
21,986
1.98
1.61
2546
0.11
1.5
0.0
189.00
0.2
21,740
1.96
1.54
25.46
0.11
1.4
0.0
Results of routing the 2 year storm
Use orifice=
1.75 Inches
will draw down lempaery
pool in
3.52
days
Peak outflows
4.16 efs
Less San post -bypass, el aie removed
6.06
ds
Peak Smgs�
2.49 ft
Water Elevation-
25A9 mil
Peak Storage'
30,348 cf
I3ea19n Spillway
24.86 msl
TamParery Pod
Elevation for 1st
Inch Of mnoff
Length of Weir
1.00ft
TO Oonhol 80%2-year
storm
Structure Overflow
26.95 mat
Top of Ou0d Control Slmclure
Length of weir
16.00 it
2 year worm

Routing Hydrograph (2-YR-80%)
13.00
Inflow
12.00 OrificeOutflow ------------ -- —- - --_..
Temp Outflow
11.00 -. - ._ _
—--StructureOverftoxr
Totaf Outflow
10.00 — — --- ---- _—
9.00
N
7.00
at
s 6.00
N
0
5.00
4.00 T
3.00 - __ - _ . __-. .__—_. __ *00
--"MW.
— --
0 9.00 18.00 27.00 36.00 45.00 54.00 63.00 72.00 81.00 90.00 99.00 108.00 117.00 126.00 135.00 144.00
Time (min)

j.5_TA;,, AN c k I
ca7U
roeoxaw
anurwu.ec nua.aae
UW 1taJNf
STORM WATER DETENTION ROUTING
FOR
OAK RIDGE METAL WORKS
WASHINGTON, NORTH CAROLINA
wialf
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Routing Hydrograph (10-YR)
80.00
78.00
- -- - - -
-
76.00
--- - -
- -inflow
-
74.00
77-00
- - ---------- - - -
- - lJlifice0utflow - -
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Outflow
68.00
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66.00
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----- --- - -----. ----
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_--Temp
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62.00
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- Total Outflow r
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58.00
56.00_.-
54.00-
52.00
50.00__-
48.00
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24.00
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18.00
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12.00 24.00 36.00 48.00 60.00 72.00 84.00 96.00 108.00 120.00 132.00
144.00 156.00 168.00 180.00 192.00 204.00 216.00 228.00
Time (min)

J.S. JANOWSKI
037"
poftx ,
oe ,awc Vw~
STORM WATER DETENTION ROUTING
FOR
OAK RIDGE METAL WORKS
WASHINGTON, NORTH CAROLINA
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Routing Hydrograph (100-YR)
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OKMOUUIOW
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Time (min)