SW7041107_HISTORICAL FILE_20080320

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW%/%��ll
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
HISTORICAL FILE
DOC DATE
.1?6��?.�
YYYYMMDD

North Carolina Department of Environment and Natural Reso
Land Quality Section: 943 Washington Square Mall, Washington, NC F989 [phone]
County: l. \ Project: 1-VMA (
Person financially responsible: 1ti t
Address: _Z37—b �\r) I C � 7Y\
basin: f
Project #� j -p
Case #
1. Project location: 5y- 1 (Do. 0 _
Pictures: No: 9 Yes: ❑ Prints: ❑ Slides: ❑ Video: ❑ Digital: ❑
2. Weather and soil conditions: W t 'v' Initial inspection: Yes: ❑ No:
3. Is site currently under notice of violation? Yes: ❑ No:
4. Is the site in compliance with S.P.C.A. and rules? Yes: ❑ No: Z If no, check violations below:
5. Violations:
❑ a. No approved plan, G.S. 1 13A-57 (4) and 15A N.C.A.0 45.0107(c) ❑ g. Inadequate buffer zone, G.S. 113A-57(1)
JW b. Failure to follow approved plan, G.S. 113A-57(5) ❑ h. Graded slopes and fills too steep,
❑ c. Failure to submit revised plan, G.S. 113A-54.1(b) and G.S. 1 13A-57(2) or 15A N.C.A.C. 48.0124(d)
15A N.C.A.C. 4B.0118(a) ❑ i. Unprotected exposed slopes, G.S, 1 13A-57(2)
❑ d. Failure to provide adequate groundcover, G.S. 113A-57(3) and r j. Failure to maintain erosion control measures,
15A N.C.A.C, 413.0107(b) or 15A N.C.A.C. 413.0124(e) 15A N.C.A.C. 413.01 13
❑ e. Insufficient measures to retain sediment on site, G.S. 113A-57(3) ❑ k. Other (describe)
❑ f. Failure to take all reasonable measures, 15A N.C.A.C. 413.0105
6. Potential NPDCS Permit Violation? Ycslg No: ❑ Describe: � 1CA� 1/1„
7. Has sedimentation damage occurred since last inspection? Yes: ❑ If yes, where? (check all that apply) No:
Lake/natural watercourse on the tract: ❑ Lake/natural watercourse off the tract: ❑ Other property: ❑
Description:
Degree of damage: slight: ❑ moderate : ❑ severe : ❑
8. Contact made with (name): Title: "-
Inspection report given: ❑ or sent: ❑ to person Financially responsible. Date given/sent:
9. Corrective actions needed:
Report by: I ti`k1-2-7nm 1(`(A Others present:
Date of inspection: J/ J�j Time arriving on site: j l ,�a Time leaving site:
cc: .> 0- Q

010
�oF W A TF9Q Michael F. Easley, Governor
G William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
November 4, 2005
Mr. Kevin Avolis
Avolis Engineering, P.A.
P.O. Box 15564
New Bern, NC 28561
Subject: Stormwater Permit SW7041107
Broad Creek Mini Storage
Craven County
Dear Mr. Avolis:
This is in response to your letter dated October 18, 2005 to Ms. Amy Franklin concerning Broad
Creek Mini Storage. Originally the requirement for a sedimentation and erosion control plan approval is
what triggered the requirement for a State stormwater permit: A State stormwater permit is required
unless we receive a statement from the Division of Land Resources that the project does not require a
sedimentation and erosion control plan. If you can submit documentation from the Division of Land
Resources that the project does not require a sedimentation and erosion control plan, the owner can then
request that the State stormwater permit be rescinded. Until this occurs permit SW741107 is in effect.
If you have any questions, or need additional information concerning this matter, please contact
me at [phone], 11
Sincerely,
Roger K. Thorpe
Environmental Engineer
Surface Water Protection Section
Washington Regional Office
North Carolina Division of Water Quality Washington Regional Office Phone (252) 946-WI FAX [phone]
Intemet h2o.enr.siate.mus 943 Washington Square Mall, Washington, NC 27889
NorthCarolina
Custom, Natural y
1-877-623-6748
An Equal Opporfunily/AffimiaWe Action Employer— 50% Recycled110% Post Consumaf Paper

AVOLIS ENGINEERING, P.A.
Z-7-77 P.O. Box 15564 • New Bern, North Carolina 28561 • [phone]
RECEIVED
OCT 1 9 2005
October 18, 2005
Ms. Amy Franklin WQ-WARO
Environmental Engineer
Division of Water Quality
943 Washington Square Mall
Washington, NC 27889
RE: Stormwater Permit No. SW7041 107
Broad Creek Mini Storage
Broad Creek Road, Craven County, North Carolina
AE Project No. 04109
Dear Amy:
A High Density Stormwater permit was issued for the proposed Broad Creek Mini Storage on
Broad Creek Road in Craven County, North Carolina. Due to the presence of'wetlands on the
site, the owner has scaled back the proposed development to disturb less than one acre of land.
Please accept this letter as formal notification that the original site design has been modified to
disturb less than one acre of land on this property. Due to wetland conditions, no additional land
disturbing activities or development will occur on this site beyond those presented on the project
plans. Since the development is less than one acre in size, no Coastal Stormwater permit is
needed.
Should you have any questions relating to this matter or need any additional information, please
do not hesitate to call.
Sincerely,
vm Avolis, P.E.
Vi e-President

AVOLIS ENGINEERING, P.A.
P,O, Box 15564 • New Bern, North Carolina 28561 • [phone]
October 15, 2004
Mr. Bill Moore
Environmental Engineer
Water Quality Section
NCDENR
943 Washington Square Mall
Washington, NC 27889
RE: Broad Creek Road Mini Storage
Broad Creek Road/NCSR 1600, Craven County, North Carolina
AE Project No. 04109
Dear 13111:
RECEIVED
DEC ? 3 2004
DWQ-WARO
Enclosed please find our Stormwater Permit submittal for the above -referenced project
consisting of:
• Application Form (Original and One Copy)
• Project Plans (2 Sets)
• Calculations (2 Copies)
• $420 Application Fee
It is requested that the enclosed application be reviewed and approved at your earliest
convenience. Should you have any questions or need any additional information, please do not
hesitate to call.
Sincerely,
KC, -n Avolis, P.E.
Vice resident

STORMWATER CALCULATIONS
Broad Creek Road Mini Storage
NCSR1600 - Broad Creek Road
Craven County, North Carolina
Prepared by:
Avolis Engineering, P.A.
P.O. Box .15564
New Bern, NC 28561
[phone] Office
[phone] Fax
October 15, 2004
L.
'ECEIVED
DEC 1 3 2004
DWQ-WARD
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STORMWATER POND CALCULATIONS
COASTAL STORMWATER DESIGN
BROAD CREEK ROAD MINI STORAGE
BROAD CREEK ROAD
CRAVEN COUNTY, NC
SIZED POND AND ORIFICE:
SITE DATA ACRES
TOTAL SITE WATERSHEAD AREA = 158858 SF 3.65
BUILDING AREA = 20500 SF 0.47
SIDEWALK AREA = 0 SF 0.00
PARKING/DRIVE AREA = (EXISTING = GRAVEL, NEW = ASPHALT) 39637 SF 0.91
GRASS AREA = 98671 SF 2.27
TOTAL BUILT - UPON AREA = 60137 SF 1.38
9A=111ME
DETERMINE POND SURFACE AREA REQUIREMENT AT PERMANENT POOL
REFERENCE SAIDA TABLE
37.9 %
YES
NO
85% TSS REMOVAL WITH 30' VEGATATIVE FILLER
90% TSS REMOVAL FOR WET DETENTION WITHOUT VEGETATIVE FILTER
X
X
SET PERMANENT POOL DEPTH =
4 FT
SAIDA LOW (30%) =
2.7
SAIDA HIGH (40%) =
3.5
• IMPER(ACTUAL%) =
37.9 %
• IMPERVIOUS LOW =
30 %
INTERPOLATED SAIDA VALUE =
3.33
REQUIRED SURFACE AREA =
5,288
SF
APPROXIMATE POND WIDTH =
45
FT
APPROXIMATE POND DIMENSIONS W
45
FT
PROVIDED PERMANENT POND SURFACE AREA =
5,432
SF
X 135 FT FT

CALCULATE 1" STORM RUNOFF VOLUME
BUILDING AREA INCL. LOADING DOCK & RAMP =
20500 SF
C=
0.95
SIDEWALK AREA
0 SF
C=
0.95
PARKING/DRIVE AREA =
39637 SF
C=
0.95
GRASS AREA =
98671 SF
C=
0.30
POND AREA =
5 432 SF
C=
1.00
VOLUME = I i, STI)n s"^ r obU mC , 7,544 FT3 C= 0.83
SET PERMANENT POOL LEVEL AT: 0' STAGE - 4 FT ELEVATION
DETERMINE POND STAGE RISE ASSOCIATED WITH 1" STORM
STAGE FT
SURFACE AREA FT2
INCREMENTAL VOL FT3
--UMM. VOL FT3:STORM VOL. FT3
-10
0
ERR
ERR
-9
0
0
ERR
-8
0
0
ERR
-7
0
0
0
-6
0
0
0
-5
0
0
0
-4
1425
0
0
-3
2113
1,769
1,769
-2
2858
2,486
4,255
-1
3659
3,259
7,513
0
5432
4,546
12,059 0
1
6402
5,917
17,976 5,917
2
7430
6,916
24,892 12,833
3
0
0
24,892 12,833
4
0
0
24,892 12,833
5
0
0
24,892 12,833
6
0
0
24,892 12,833
7
0
0
24,892 12,833
8
0
0 --
24,892---- .12,833-
9
0
0
24,892 12,833
10
0
0
24,892 12,833
CALCULATE 1" STORM RISE
BETWEEN: 4 FT & 5 FT
REMAINING VOLUME TO BE STORED ABOVE 49' CONTOUR =
BETWEEN: 5 FT & 6 FT
RISE ABOVE 5.OFT CONTOUR = 0.261 FT
THE STORED RUNOFF =
INCREMENTAL VOLUME _
THEREFORE 1" STORM ELEVATION 5.26 FT SAY: 5.26 FT
STORM STAGE 5.26 FT
5917 FT3
1,807 FT3
6916 FT3

DETERMINE ORIFICE SIZE TO DRAW DOWN THE 1" STORM
AVERAGE AVAILABLE ORIFICE HEAD = 0.63 FT
SIZE ORIFICE FOR 3-DAY DRAWDOWN
AVERAGE Q REQUIRED = 0.029 FT31S
FROM P. 111-I1 OF HRM
BASIC ORIFICE EQUATION
Q =
DISCHARGE(CFS)
Co =
COEFFICIENT (USE 0
A =
ORIFICE AREA (SF) Q=CD*A*sgrt(2gh)
g =
GRAVITY (32.2 FTIS2)
h =
DRIVING HEAD FT
SOLVE FOR AREA REQUIRED: A=Q/(CD*sgrt(2gh)=
0.01 SF
ORIFICE DIAMETER (D) = 0.0985 FT APPROXIMATELY= 1.18 INCHES
TRY A 1.25 INCH DIAMETER ORIF =Do
CHECK ORIFICE SIZE BY ROUTING THE DRAWDOWN OF THE 1"STORM RUNOFF
DISCHARGE TABLE
h(FT)
Q(CFS)
1.6
0.052
1.05
0.042
1
0.041
0.9
0.039
0.8
0.037
0.7
0.034
0.6
0.032
0.5
0.029
0.4
0.026
0.3
0.022
0.2
0.018
0.1
0.013
0.05
0.009
0.04
0.008
0.03
0.007
0.02
0.006
NOTE: h MEASURED TO CENTER OF ORIFICE
Q=(0.6)(PI14)(Do112)2sgrt(2*32.2*h)
INITIAL HEAD
1.55 FT
Q

APPROXIMATE 1" STORM DRAWDOWN USING 6 HOUR INCREMENTS
REQUIRED VOLUME Y 7,544 FT3 POND HAS 1" STORM VOLUME AT t=0
TIME ELAPSED HR
h FT
Q CFS
Ql6 HRS
Qcumm
VOL. REMAINING FT3
0
1.55
7,544
6
1.55
0.051
1,103
1,103
6,442
12
1.32
0.047
1,019
2,122
5,423
18
1.11
0.043
935
3,057
4,488
24
0.92
0.039
851
3,907
3,637
30
0.75
0.035
766
4,673
2,872
36
0.59
0.031
680
5,353
2,191
42
0.45
0.028
594
5,947
1,597
48
0.33
0.023
507
6,455
1,090
54
0,22
0.019
419
6,874
671
60
0.14
0.015
329
7,203
342
66
0.07
0.011
235
7,437
107
72
0.02
0.006
131
7,569
(24)
78
0.00
ERR
ERR
ERR
ERR
84
ERR
ERR
ERR
ERR
ERR
90
ERR
ERR
ERR
ERR
ERR
96
ERR
ERR
ERR
ERR
ERR
102
ERR
ERR
ERR
ERR
ERR
108
ERR
ERR
ERR
ERR
ERR
114
ERR
ERR
ERR
ERR
ERR
120
ERR
ERR
ERR
ERR
ERR
"*NOTE: (ERR) INDICATES THAT THE STORM WATER HAS DRAINED NEARLY LEVEL WITH THE ORIFICE HEIGHT
WHICH WILL BE THE HEIGHT OF THE PERMANENT POOL.
THERFORE THE 1" STORM WATER HAS DRAINED WITHIN THE TIME PERIOD OF 2 - 5 DAYS, AND THE RUNOFF
CONTROL FOR THE POND IS SATISFACTORY.
ALSO LEAVE 54 HOURS FOR THE LAS- 107 FT3 TO TRICKLE OUT

o

Hydrograph Summary Report
Page 1
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
peak
(min)
Volume
(cult)
Return
period
(yrs)
InflowOetaft,
hyd(s)
Maximum
storage
(tuft)
Hydrograph
description
1
Rational
9.72
1
15
8,749
10
—
10-yr, 15-min stor
2
Rational
8.56
1
20
10,273
10
—
---
----
10-yr, 20-min
3
Rational
7.70
1
25
11,547
10
—
10yr, 25-min
4
Rational
7.03
1
30
12.647
10
—
---
--
10-yr, 30-min
5
Rational
6.04
1
40
14,494
10
—
10-yr, 40-min
6
Rational
5.34
1
50
16,026
10
—
----
10-yr, 50-min
7
Rational
4.82
1
60
17,345
10
—
10-yr, 60-min
8
Rational
4.41
1
70
18,511
10
—
---
10-yr, 70-min
9
Rational
4.08
1
80
19,562
10
—
10-yr, 80-min
10
Reservoir
0.48
1
29
4,296
10
1
5.39
8,582
10-YR, 15-MIN
11
Reservoir
1.35
1
37
5,762
10
2
5.53
9,561
10-YR, 20-MIN
12
Reservoir
1.96
1
44
7,007
10
3
5.61
10,109
10-YR, 25-MIN
13
Reservoir
2.37
1
50
8,084
10
4
5.65
10,433
10-YR, 30-MIN
14
Reservoir
2.78
1
62
9,893
10
5
5.70
10,758
10-YR, 40-MIN
15
Reservoir
2.96
1
72
11,388
10
6
5.72
10,879
10-YR, 50-MIN
16
Reservoir
3.00
1
83
12,671
10
7
5.72
10,912
10-YR, 60-MIN
1
17
Reservoir
2.99
1
93
13,802
10
B
5.72
10,902
10-YR, 70-MIN
18
Reservoir
2.94
1
102
14,816
10
9
5.72
10,872
10-YR, 80-MIN
rProjLfile: broad min istorage.GP
OF file: NEW BERN.IDF
Run date: 12-06-2004

- jq, A-P CJ_ee L M i o i 5+- rav--
16 - Reservoir -10 Yr - Qp = 3.00 cfs
4
3
C�
2
1Ll I
0
0 5 10 15 20 25
Time (hrs)
Hyd. 7 ® Hyd. 16

Reservoir Report
Page 1
Reservoir No. 'I - BROADCREEK
English
Pond Data
Pond storage is based on known contour areas
Stage 1 Storage Table
Stage Elevation
Contour area
Incr. Storage
Total storage
ft ft
sgft
cuft
cuft
0.00 4.00
5,432
0
0
1.00 5.00
6,402
5,917
5,917
2.00 6.00
7,430
6,916
12,833
Culvert 1 Orifice Structures
[A] [B] [C] [D]
Rise in
= 18.0
1.3
0.0
0.0
Span in
= 18.0
1.3
0.0
0.0
No. Barrels
= 1
1
0
0
Invert El. ft
= 4.00
4.00
0.00
0.00
Length ft
= 30.0
0.1
0.0
0.0
Slope %
= 0.25
0.10
0.00
0.00
N-Value
= .013
.013
.000
.000
Qrif. Coeff.
= 0.60
0.60
0.00
0.00
Multi -Stage
= -----
Yes
No
No
Stage 1 Storage 1 Discharge Table
Stage Storage Elevation CIv A
ft
cuft
ft
cfs
0.00
0
4.00
0.00
0.10
592
4.10
0.05
0.20
1,183
4.20
0.19
0.30
1,775
4.30
0.34
0.40
2,367
4.40
0.54
0.50
2,959
4.50
0.79
0.60
3,550
4.60
0.99
0.70
4,142
4.70
1.29
0.80
4,734
4.80
1.51
0.90
5,325
4.90
1.79
1.00
5,917
5.00
2.00
Weir Structures
[A]
[B]
[C]
[D]
Crest Len ft
= 3.1
0.0
0.0
0.0
Crest El. ft
= 5.26
0.00
0.00
0.00
Weir Coeff.
= 3.00
0.00
0.00
0.00
Eqn. Exp.
= 1.50
0.00
0.00
0.00
Multi -Stage
= Yes
No
No
No
Tailwater Elevation = 0.00 ft
Note: All outflows have been analyzed under inlet and outlet wntrel.
Clv B Clv C Clv D Wr A Wr B Wr C Wr D Discharge
cfs cfs
cfs cfs cfs
cfs cfs cfs
0.00 ---
- 0.00 -
- - 0.00
0.00 -.
- 0.00 -
- - 0.00
0.02 -
- 0.00 -
- --- 0.02
0.02 -
- 0.00 -
- - 0.02
0.02 -
- 0.00 -
--- -- 0.02
0.03 - -
- 0.00 -
--- -- 0.03
0.03 -
- 0.00 ---
- - 0.03
0.03 -
- 0.00 -
- - 0.03
0.04 -
- 0.00 ---
- - 0.04
0.04 -
- 0.00 -
- - 0.04
0.04 ---
- 0.00 ---
- - 0.04
Continues on next page...

SROAWREEK
Stage 1 Storage 1 Discharge Table
Page 2
Stage Storage Elevation Clv A Clv B Clv, C Clv D Wr A Wr B Wr C Wr D Discharge
ft
cuft
ft
cfs
cfs cfs cfs
cfs cfs cfs cfs
cfs
1.10
6,609
5.10
2.24
0.04 - -
0.00 - - -
0.04
1.20
7,300
5.20
2.43
0.04 - -
0.00 - - -
0.04
'..'�
7,992
5.30
2.58
0.05 - -
0.08 - --- -
0.12
1.40
8,683
5.40
2.71
0.05 - -
0.49 - - --
0.54
1.50
9,375
5.50
2.72
0.04 - ---
1.11 --- - -
1.15
1.60
10,067
5.60
4.15
0.04 - -
1.87 - - --
1.91
1.70
10,758
5.70
5.20
0.04 - --
2.75 - - -
2.78
1.80
11,450
5.80
6.08
0.02 - -
3.74 - --- -
3.76
1.90
12,141
5.90
6.84
0.02 - -
4.82 - - --
4.85
2.00
12,833
6.00
7.52
0.02 - -
6.00 --- --- -
6.02
...End