SW8991241_COMPLIANCE_20000203

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT. NO. SW9wLv_/
DOC TYPE I ❑ CURRENT PERMIT
❑ T APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

1l28100
CDC
::> IV Y "I t t ,cam r t
LINCOLN INDUSTRIAL
Stormwater Calculations
99140
Total D►aina a Area
sq. ft. - acres
83 200 1.91
Impervious Area
Land Use
s ,ft.
acres
buildings
10,842
0,25
arkin las haft
14.845
0.34
Future/Offsite
2,146
0.05
Total
27,833
0.64
a]vormwater Calculations:
Time of Concentration:
Hydraulic Length (L) = 750 ft.
change in Height (H) = 2 ft.
Tc = (L3 M)"B* 1 128
12.52 min.
Flow for 10 year, 6 hour Storm (Qrs):
QPRE _ (CPRE) x (I10) x (Area)
3.01 cfs
QPOST = (CPosT) x (Ila) x (Area)
5.90 cfs
oou ozora a -apacrEy ror iu year ororm:
CN = (98)(% imp.) + (60)(1-% imp.)
= 73
P = 4.82 in. for 1Cyr, 6 hr storm
So 10001CN - 10
= 3.70
Depth (D)= [P-(0.2)(S)]21 [P+(0.8)(S)j
= 2.14 in.
Time to Peak Flow:
TP = [(43.5)(0)(Area)] I 02.PosT
30.16 min.
Detention Pond Design:
.. -Pond Size:
Elevation
ft.
Surface Area
(sq. ft.
Normal Pool
22.00
4,879
Flood Pool
23.00
5,853
Top of Bank
24.00
6,884
Bottom of Pool
16.00
437
Provided Storage Volume:
Vol. _ [(Normal pool SA + Flood Pool SA) 121
x (F.P. alev. - N.P. elev.)
5,366 cu.ft.
% impervious = 0,335
= 33.5%
say 34.0%
CARE = 0.25
CPosT = (% imp.)(.95)+(1-°% imp-)(.25)
0.49
Ila = 6.30 in/hr
125 = 7,13 in/hr
Flow for 25 year, 6 hour Storm (025):
OPRE _ (CPRE) x (125) x (Area)
3.40 cfs
QPosT = (CaosT) x (125) x (Area)
6.67 cfs
oou oiora a kapauay ror co yew omrm,
CN = (98)(°% imp.) + (60)(1-°% imp_)
= 73
P = 5.71 in. for 25 yr, 6 hr storm
S = 1000ICN - 10
3.70
Depth (D)= [P-(0.2)(S)]2I 1P+(0.8)(S)1
= 2.85 in.
Time to Peak Flow:
TP = [(43.5)(D)(Area)) 1 01o.POST
- 35.48 min.
State Surface Area Requirement at normal poot:
Pond side slopes = 3 :1
Depth below N.P. = 6 ft.
SAMA = 0.0180
(Chart for 90% TSS Removal for Wet Detention
Pond without Vegetative Filter
Required SA = (SAIDA) x (Total Drainage Area)
1,498 sq. ft.
State Volume Required for Storage of first 1" of runoff:
Vot. = 1(1/12) x (CA) x (°% imp.)] +
[(1112) x (DA) x (1-0% imp.) x C]
C = 0.2
3,242 eu.ft,
owl l 111011/1",
,,•�� ,its CARO�%!-
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17374 r
n ECE[VE
F F B 0 3 2000
PROS 4' , -41
99140POND.xIs 1 of 2

1/28/00 LINCOLN INDUSTRIAL
CDC Stormwater Calculations
Pond Volume:
Bottom SA = 437 sq. ft.
Normal Pool SA = 4,879 sq, ft,
Vol. = [(N.P. SA + Bottom SA) 1 2] x (N.P. el. - Bottom el.)
15,948 cu.ft.
Forebay:
Required Volume
Vol. = 20% of storage volume
3,190 cu. ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1st 1" of stormwater,
Q = Required Vol. 1172,800 sec. (2-days)
0.019 cfs
Required Area of Pipe for 2-da drawdown:
A= Q 1 [Cd x SQRT(2 x g x h)]
Cd = 0.6
9 = 32.2 ft.Is2
h = (F.P. elev.- N.P. elev.) 12
0.5 ft.
A = 0.0055 sq. ft.
Diameter of Pi o for 2-day drawdown:
DIA. = SQRT((A x 4)1 pi]
= 0.0838 ft.
= 1.01 in.
'Uso: 1.0 in diameter pipe
Outlet Structure Check:
Using a 3' x 3' Basin,
Perimeter L) = 12 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp)(25)
0,49
1 = 7.13 in. for a 25 yr. Storm
A = 1.91 Acres
— 6.67 cfs
Q= CwxLxH''S
H = (Q 1 (Cw x L)]213
Cw = 3
— 0.33 ft.
Peak elevation = flood pool elevation + H
23.33 ft.
Provided Volume
Bottom SA = 480 sq. ft.
Normal Pool SA = 1,700 sq. ft.
Vol. _ [(N.P. SA + Bottom SA) 12] x (N.P. el, - Bottom el.)
= 3,270 cu.ft.
depth = 3 ft.
7ro.008
drawdown:
stormwater,
uired Vol. 1432,000 sec. (5-days)
cfs
Required Area of Pie for 5-day drawdown:
A= Q! [Cd x SQRT(2 x g x h)]
Cd = 0.6
g = 322 ft.ls2
h = (F.P. elev. - N.P. elov.)1 2
0.5 ft.
A = 0.0022 sq. ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) 1 pi]
= 0.0530 ft.
0•64 in.
99140
99140POND.xis 2 of 2

O1/21/00
TE 99140
Stormwater Narrative
LINCOLN INDUSTRIAL PARK
Brunswick County, NC
The total drainage area of this project is 2.99 acres. A 10,842 sf building will be
constructed with an asphalt access and parking area of 14,845 sf and 2,146 sf of concrete
sidewalk. Total impervious area is 27,833 sf for a total built upon area of 21.4%
impervious.
Stormwater runoff will be handled by a wet detention pond designed to exceed the state's
requirement of the first one inch of runoff. This pond will drain to Jackey's Creek with a
classification of C-SW. A vegetated filter is not required due to the 90% TSS removal
used in the wet detention design.
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Ff M r p
p E C E I V E
JA N 2 4 200 U
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PR{-)j n�G,u tl Z4/

Compliance Inspection Report
Permit: SW8991241 Effective: 02/22/00 Expiration: 02/22/10 Owner: G William Dobo
Project: Lincoln Industrial Park
County: Brunswick Ploof Rd
Region: Wilmington
Contact Person: G William Dobo Title: Owner
Directions to Project:
Approx. 750' south from intersection of SR 1566 and SR 1524
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 1213012010 Entry Time: 10:05 AM
Primary Inspector: David W Cox
Secondary Inspector(s):
Reason for Inspection: Follow-up
Permit Inspection Type: State Stormwater
Facility Status: ■ Compliant ❑ Not Compliant
Question Areas:
E State Stormwater
(See attachment summary)
Leland NC 28451
Phone: [phone]
Exit Time: 10:10 AM
Phone: [phone]
Inspection Type: Transfer Renewal
Page: 1

Permit: SW8991241
Inspection Date: 12/30/2010
Owner - Project: G William Dobo
Inspection Type: Transfer Renewal
Inspection Summary:
Site is considered compliant received P.E. on 12/28/2010.
File Review
Is the permit active?
Signed copy of the Engineer's certification is in the file?
Signed copy of the Operation & Maintenance Agreement is in the file?
Copy of the recorded deed restrictions is in the file?
Comment:
Reason for Visit: Follow-up
Yes No NA NE
D❑❑❑
Q ❑ Q ❑
❑ ❑ D ❑
❑ ❑ ❑ ❑
Page: 2

YF
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
December 2, 2010
Mr. G. William Dobo, Owner
P.O. Box 424
Wrightsville Beach, NC 28480
Subject: NOTICE OF VIOLATION, NOV-2010-PC-1188
Lincoln Industrial Park
Stormwater Permit No. SW8 991241
New Hanover County
Dear Mr. Dobo:
On November 29, 2010, Wilmington Regional Office personnel performed a Compliance
Inspection and file review of the subject project, located at Ploof Road in Belville, Brunswick
County; North Carolina. The inspection was performed to determine the status of compliance
with Stormwater Permit Number SW8 991241, issued to you on February 22, 2000.
The project has been found in violation of Stormwater Permit Number SW8 991241 , issued
pursuant to the requirements of 15A NCAC 21-1.1000. The violations found are:
1. Failure to certify the stormwater system. A file review revealed that this office
has not received a Designers Certificate.
Permit condition states that upon completion of construction, prior to issuance of a Certificate of
Occupancy, 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. Any deviations from the approved plans and specifications must be
noted on the Certification.
To correct these violations you must:
Provide a written "Plan of Action" which outlines the actions you will take to
correct the violation(s) and a time frame for completion of those actions, on or
before January 8, 2011.
2. Submit the required Designers Certificate.
Remove the cattails from the storage basin.
Failure to provide the 'Plan of Action" by January 8, 2011, or to correct the violations by the
date designated in the "Plan of Action", are considered violations of 15A NCAC 2H.1000, and
may result in the initiation of enforcement action which may include recommendations for the
assessment of civil penalties, pursuant to NCGS 143-215.6A.
Wilmington Regional Office
127 Cardinal Drive Extension, Wilmington, North Carolina 28405
Phone: [phone] FAX: [phone] Customer service: 1-877-623-6748
Internet: www,ncwaterquality.org
One
NorthCarolina
An Equal Opportunity 1 Aff rmaUve Action Employer

December #2, 2010
Lincoln Industrial Park
Stormwater Permit No. SW8 991241
By copy of this letter to the Brunswick County Building Inspector, this Office is requesting that
the Building Inspector consider withholding building permits and Certificates of Occupancy for
this project until this matter is satisfactorily resolved.
If you have any questions concerning this matter, please call David Cox at [phone].
Since
rely,
Georgette Scott
Stormwater Supervisor
Division of Water Quality
GDSldwc: S:IWQSISTORMWATERINOTICE11241
cc: Phill Tripp
Brunswick County Building Inspections
John Hennessey
Georgette Scott
Central Files
WiRO
Page 2 of 4

ti
December 12, 2010
Lincoln Industrial Park
Stormwater Permit No. SW8 991241
Page 1 of 2
Designer's Certification
I, , as a duly registered in
the State of North Carolina, having been authorized to observe (periodically 1 weekly I
full time) the construction of the project,
( Project)
for (Project Owner) hereby state that, to the
best of my abilities, due care and diligence was used in the observation of the project
construction such that the constriction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
Required Items to be checked for this certification to be considered complete are on
page 2 of this form.
Noted deviations from approved plans and specifications:
Signature
Registration Number
Date
SEAL
Page 3 of 4

December 12, 2010
Lincoln Industrial Park
Stormwater Permit No. SW8 991241
Certification Requirements:
k
Page 2 of 2
1. The drainage area to the system contains approximately the permitted
acreage.
2. The drainage area to the system contains no more than the permitted
amount of built -upon area.
3. All the built -upon area associated with the project is graded such that the
runoff drains to the system.
4. The outlet/bypass structure elevations are per the approved plan.
5. - The outlet structure is located per the approved plans.
6. - Trash rack is provided on- the outlet/bypass structure.
7. All slopes are grassed with permanent vegetation.
8. Vegetated slopes are no steeper than 3.1.
9. The inlets are located per the approved plans and do not cause short-
circuiting of the system.
10. The permitted amounts of surface area and/or volume have been
provided.
11. Required drawdown devices are correctly sized per the approved plans.
12. All required design depths are provided.
13. All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
14. The dimensions of the system, as shown on the approved plans, are
provided.
cc: NCDENR-DWQ
New Hanover County Building Inspections
Page 4 of 4

I V
Compliance Inspection Report
Permit: SW8991241 Effective: 02/22/00 Expiration
County: Brunswick
Region: Wilmington
Contact Person: Gabriel Wiliam Dobo Title: Owner
Directions to Project:
Type of Project: State Stormwater - HD - Detention Pond
Drain Areas:
On -Site Representative(s):
Related Permits:
Inspection Date: 11/29/2010 Entry Time: 02:00 PM
Primary Inspector: David W Cox
Secondary Inspector(s):
Reason for Inspection: Routine
Permit Inspection Type: State Stormwater
Facility Status: ❑ Compliant ® Not Compliant
Question Areas:
® State Stormwater
(See attachment summary)
Owner: Unknown Wiro
Project: Lincoln Industrial Park
Exit Time: 02:30 PM
Phone: [phone]
Phone:[phone]
Inspection Type: Transfer Renewal
Page: 1

}
k
Permit: SW8991241 Owner - Project: Unknown Wiro
Inspection Date: 11/29/2010 Inspection Type: Transfer Renewal Reason for Visit: Routine
Inspection Summary:
In order for this State Stormwater Collection System into compliance you must perform the following:
1. Submit the required Engineer's Certificate.
2. Remove cattails from pond.
Operation and Maintenance
Yes
No
NA
NE
Are the SW measures being maintained and operated as per the permit requirements?
Q
Are the SW 6MP inspection and maintenance records complete and available for review or provided to DWO
❑
0
0
upon request?
Comment: Cattail growth has exceeded the 50% requirement.
File Review
Yes
No
NA
NE
Is the permit active?
■
0
0
11
Signed copy of the Engineer's certification is in the.file?
®�
Q
Signed copy of the Operation & Maintenance Agreement is in the file?
®
❑
0
Copy of the recorded deed restrictions is in the file?
0
❑
in
Comment: This office has not received a copy of the Engineer's Certificate.
Page: 2

1128100
CDC
s'1<v 8 9 9 t 2-ql
LINCOLN INDUSTRIAL
Stormwater Calculations
�'Z:iCI�1
Total Drainage Area
N. ft.
acres
83,200
1.91
Impervious Area
Land Use
s .ft.
acres
buildings
10,842
0.25
arkin !as haft
14,845
0.34
Future/ OffsAa
2,146
0.05
Total
27,833
0.64
Stormwater Calculations:
Time of Concentration:
Hydraulic Length (L) - 750 ft.
change in Height (H) = 2 ft.
Tc = (L' IH)'a5 / 128
12.52 min.
Flowfor 10 year, 6 hour Storm (Q10):
QPRe = (Cpge) x (tjo) x (Area)
3,01 cfs
QPosr = (CPosT) x (lio) x (Area)
5.90 efs
oou oturage,,apacay ror i u year owrm:
CN = (98)(°% imp.) + (60)(1-0% imp.)
73
P = 4.82 in. forl0yr, 6 hr storm
S= 10001CN-10
= 3.70
Depth (D)= jP-(0.2)(S)j' / (P+(0.8)(S)]
2.14 in.
Time to Peak Flow:
Tp = [(43.5)(0)(Area)] 1 02,pos7
30.16 min.
Detention Pond Desian:
Elevation
R.
Surface Area
s . ft.)
Normal Pool
22.00
4.879
Flood Pool
23.00
5,853
Top of Bank
24.00
6.684
Bottom of Pool
16.00
437
Provided Storage Volume:
Vol. _ [(Normal pool SA + Flood Pool SA) / 21
x (F.P. elev. - N.P. etev.)
5,366 cu. ft.
`\\\�,�1a11111111 !!JJlJ
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..QOFSS%y�9
;Q SEAT,
y 17374 �
4
99140POND.xIs 1 of 2
°% impervious = 0.335
= 33.5%
say 34.0%
CPRE = 0.25
C'PosT = (% imp.)(,95)+(1-0%
0.49
Ito = 6.30 inlhr
123 = 7.13 inlhr
Flow for 25 year, 6 hour Storm (Q25)
QPRe = (C'PRF) x (125) x (Area)
3.40 cfs
QPosT = (CPosr) x (125) x (Area)
6.67 cfs
CN = (98)(°% imp.) + (60)(1-°% imp.)
= 73
P = 5.71 in, for 25 yr, 6 hr storm
S= 10001CN-10
3.70
Depth (D)= [P-(0.2)(S)f 1 [P+(0.8)(S)j
2.85 in.
Time to Peak Flow:
Tp = [(43.5)(D)(Area)] 1 Q10posT
35.48 min.
orate sunace Area mo wremenr at normal Rooc
Pond side slopes = 3 :1
Depth below N.P. = 6 ft.
SAIDA = 0.0180
(Chart for 90% TSS Removal for Wet Detention
Pond without Vegetative Filter
Required SA = (SAIDA) x (Total Drainage Area)
- 1,498 s . ft.
State Volume Required for Storage of first 1" of runoff:
Vol._ [(1112) x (DA) x (% imp.)[ +
[(1112) x (DA) x (1-°% imp.) x C]
C = 0.2
- 3.242 cu. ft.
i "TORMWATER
0 D E C E I V E
FEB Q 3 2001
PRO.1 # osw I Z4i

1/28/00 LINCOLN INDUSTRIAL
CDC Stormwater Calculations
Pond Volume;
Bottom SA = 437 sq. ft.
Normal Pool SA = 4.879 sq. ft.
Vol, = M.P. SA + Bottom SA) 1 2] x (N.P. el. - Bottom ei.)
15,948 cu. ft.
Forebav:
Required Volume
Vol. = 20% of storage volume
3,190 cu. ft.
Outlet Structure Design:
Flow for 2-day drawdown:
for 1st V of stormwater,
Q = Required Vol. 1172,800 sec. (2-days)
= 0.019 cfs
Required Area of Pipe for 2 -day drawdown:
A= Q! [Cd x SQRT(2 x g x h)]
Cd = 0.6
g = 32.2 ft./sZ
h = (F.P, elev.- N.P. elev,) 12
0.5 ft.
A = 0.0055 sq, ft.
Diameter of Pi a for 2-day drawdown:
DIA. = SQRT{(A x 4) / pi]
= 0.0838 ft.
1.01 in.
'Use: 1.0 in diameter pipe
Outlet Structure Check:
Using a 3' x 3' Basin,
Perimeter L) = 12 ft.
Q = CIA
C = (% imp.)(.95) + (1-% imp)(25)
0.49
1 = 7.13 in. for a 25 yr. Storm
A = 1.91 Acres
6.67 cfs
Q= CwxLxHi'5
H = [Q / (Cw x L)]2J3
Cw = 3
0.33 ft.
Peak elevation n flood pool elevation + H
23.33 ft.
Provided Volume
Bottom SA = 480 sq, ft.
Normal Pool SA = 1,700 sq, ft_
Vol. = [(N.P. SA + Bottom $A) 1 2] x (N.P. el. - Bottom el.)
3,270 cu. ft.
depth = 3 ft.
Flow for 5-day drawdown:
for 1 st 1" of stormwator,
Q = Required Vol, 1432,000 sec. (5-days)
— 0.008 cfs
Required Area of Pipe for 5-day drawdown:
A- Q I [Cd x SQRT(2 x g x h)]
Cd = 0.6
g = 32.2 ft.1s'
h = (F.P. elev. - N.P. elev.) / 2
0.5 ft.
A = 0.0022 sq, ft.
Diameter of Pipe for 5-day drawdown:
DIA. = SQRT[(A x 4) / pi]
= 0.0530 ft.
0.64 in.
99140POND.xts 2 of 2
99140

01/21/00
TE 99140
Stormwater Narrative
LINCOLN INDUSTRIAL PARK
Brunswick County, NC
The total drainage area of this project is 2.99 acres. A 10,842 sf building will be
constructed with an asphalt access and parking area of 14,845 sf and 2,146 sf of concrete
sidewalk. Total impervious area is 27,833 sf for a total built upon area of 21.4%
impervious.
Stormwater runoff will be handled by a wet detention pond designed to exceed the state's
requirement of the first one inch of runoff. This pond will drain to Jackey's Creek with a
classification of C-SW. A vegetated filter is not required due to the 90% TSS removal
used in the wet detention design.
E C E I V E
J A N 2 4 2000
PRQJ riS / Z4�
0