SW8950611_COMPLIANCE_20130612

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
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State of North Carolina
Department of Environment, Health, and Natural
Wilmington Regional Office
James B. Hunt, Jr. DIVISION OF ENVIRONMENTAL MANAGEMENT
Governor WATER QUALITY SECTION
January 19, 1996
CERTIFIED MAIL Z 405 591349
RETURN RECEIPT REQUESTED
Ms. Jo Ann Simmons
Post Office Box 248
Shallotte, North Carolina 28459
Resources
Jonathan B. Howes
Secretary
Subject: NOTICE OF VIOLATION
Freedom Homes
Stormwater Project No. SW8 950611
Brunswick County
Dear Ms. Simmons:
On January 18, 1996, Wilmington Regional Office personnel performed a Compliance Inspection
of the project known as Freedom Homes, located off Highway 17 Bypass in Shallotte, Brunswick County,
North Carolina. The inspection was performed to determine the status of compliance with Stormwater
Management Permit Number SW8 950611, issued to you on September 12, 1995.
The project has been found in violation of Stormwater Management Permit Number 950611, issued
pursuant to the requirements of your NCAC 2H.1000. The violations found are:
1. Failure to construct the detention pond per the approved plans prior to construction of
impervious surfaces.
2. The outlet structure has not been constructed.
3. Minimum pond depth has not been provided.
4. The side slopes are very eroded. The approved Operation and Maintenance plan is not being
followed.
5. The Engineer's Certification has not been received, but the project is built and in operation.
127 Cardinal Drive Extension, Wilmington, N.C. 29405-3945 • Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Ms. Simmons
January 19, 1996
Stormwater Management Permit No. 950611
To correct these violations you must :
1. Provide a written "Plan of Action" which outlines the actions you will take to correct the
violations and a time frame for completion of those actions, on or before February 18, 1996.
2. Construct the pond per the approved plans.
3. Provide regular maintenance for the pond.
4. Provide the Engineer's Certification upon completion of the project.
Failure to provide the "Plan of Action" by February 18, 1996, 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 and
criminal penalties, pursuant to NCGS 143-215.6A.
If you have any questions concerning this matter, please call either Ms. Linda Lewis or Mr. Dave
Adkins at [phone].
Sincerely,
�tFC V S(���� ��—
Rick Shiver, P.G.
Regional Supervisor
RSS:larl S:IWQSISTORMWATINOTICE1950611.JAN
cc: Shannon Houston
Delaney Aycock, Brunswick County Building Inspections
Bradley Bennett
Linda Lewis
Central Office

a STATE a
a�
State of North Carolina
Department of Environment, Health, and Natural
Wilmington Regional Office
James B. Hunt, Jr. DIVISION OF ENVIRONMENTAL MANAGEMENT
Governor WATER QUALM SECTION
August 24, 1995
Ms. Shannon Houston
Houston and Associates
Post Office Box 2927
Shallotte, North Carolina 28459
Resources
Jonathan B. Howes
Secretary
Subject: ADDITIONAL INFORMATION
Stormwater Project No. SW8 950611
Freedom Homes
Brunswick County
Dear Ms. Houston:
The Wilmington Regional Office received a Stormwater Submittal for the Freedom Homes on
August 7, 1995. A preliminary review of that information has determined that the submittal for the subject
project is not complete. The following information is needed to continue the stormwater review:
1. Based on your revised calculations, the total amount of proposed impervious area is 2.2
acres. Please revise the submittal form (initial and date).
2. My calculation of orifice size falls between 1.2" and 1.9", while you propose 4" . My
calculation is based on rearranging the orifice equation to solve for area, using the average
head. Your method has been used by other engineers, with the same results, therefore, I will
do what I did with them. The Certification will state that if the pond does not draw down
in 2-5 days, the orifice size must be adjusted.
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 0 Telephone [phone] • Fax [phone]
An Equal Opportunity Affirmative Action Employer

Ms. Houston
August 24, 1995
Stormwater Project No. SW8 950611
Please note that this request for additional information is in response to a preliminary review. The
requested information should be received by this Office prior to September 24, 1995, or the submittal will
be returned as incomplete.
If you have any questions concerning this matter please feel free to call me at [phone].
Sincerely,
Ms. Linda Lewis
Environmental Engineer
DAlari: S:1WQSISTORMWATIADDINFO1950611.AUG
cc: Linda Lewis
Central Files
2

DIVISION OF ENVIRONTINIENTAL IvIANAGEI4ENrr
DENSITY ENGINEERED X
PROJECT DATA
Project Name Freedom Homes
Location (County, Township/Municipality, Address, State Road) Brunswick County
4450 Main Street, Shallnt±a, NC, US_17 Business•. _
Owner's Name Jo Ann Simmons
MailingAddress
Post Office Box 248, Shallotte, North Carolina 28459
Phone Number (9101 287-3602 _ Submittal Date 6,�9.5 _
Brief Description (include map and appropriate drawings) Mobile Home Sales Lots
Name of Water Body Receiving Stormwater Runoff Williams Branch
Classification of Water Body C. Sw If SA waters, engineered system, and distance is C0.5
miles, attach report of chloride sampling results__ N/A T mg/l
State/Federal Permits/Approvals Required (Check appropriate blanks)
CAMA Major_
404 Permit
Other (Specify)
CALCULATION OF BUILT UPON AREA
Sedimentation/Erosion Control X
DEMMHS Sewage Disposal
Built upon area means that portion of.a development that is covered by impervious or partially pervious cover
including buildings, pavement, recreation fatuities, gravel, etc., but not including wood decking_ If the project
includes areas draining to different water classifications, please note them separately. below.
Subwatershed Subwatershed
C aSSificad011 C Sw
Built upon area 2.05
Total Project Area 3.40
% Built upon Area 60.3
Allowable B/U Area 30.0
Is the Project B/U Area S the Allowable B/U Area? No Of no, an engineered system is required.)
175 Built upon area = (built upon area / total project area) * 100
Built upon area limits for projects to meet density: SA waters — 25%, Other ---30% F Office use only
STORMWATER COLLECTION SYSTEM
Describe how the runoff will be treated See attached plans
Jul. 10 1995
DEM

BUFFER AREA
Is the built upon area at least 30 feu frorn mean [sigh water of all surface waters? �NQ_T [[no, please
provide a description_ Engineered _solution
(Note: Only boat ramps, public roads, public bridges, and walkways to water related facilities are allowed
within 30 feet of the mean high water line if the project is intended to meet stormwater control
requirements through density limits.)
DEED RESTRICTIOINS AND PROTECTIVE COVENANTS
By my signature below, I certify that the recorded deed restrictions and protective covenants for this project
steal[ limit the allowable built -upon area per lot to NZA square feet inclusive of right -of --way,
structures, pavement, walkways or -patios of brick, stone, or slate, not including wood decking, state that
the covenants will be binding on all parties and persons claiming under them, that they will run with the
[and, and that benefits may be enforced by the State of North Carolina, therefore, the covenant cannot -be
changed or deleted without consent of the State.
CERTIFICATION
I, a certify that the information included on this
submittal forth is .correct, that the project will be constructed in conformance with this information, and
that to" the best of my, knowledge, the proposed project -complies with the requirements of 15 NCAC
2H.1003 (b). I authorize the below named person or firm to submit stormwater plants on my. behalf, and
agree to abide by the deed res ctionnsstatem/ent above.
Owne s Signature Dat
Provide authorized person or firm name and address below:
Houston and Associates, P.A.
117 Pine Street
Post Office Box 2927
1I11 t Shallotte, North Carolina 28459
I, Qr �. H'O►r4Stor� ,aNotary Public for theStateof_
County of,,vs do hereby certify that c A,r, personally
appeared before me this -1_ day of 19_q5 , and ges the due execution
of the foregoing instrument. Witness my hand and o icial seal,
aQ- TAlf� l
My commission expires V3 � C � � �q
DIVISION OF ENVIRONMENTAL MANAGEMENT*10NEO
Regional Office
Date Individual Evaluating Forms/Plans
Date Re -Iona[ Water Quality Supervisor
cc: 'Applicant/WiRO/Bradley Bennett/Central Files
'S

EROSION CONTROL AND STORMWATER CALCULATIONS
for
FREEDOM HOMES TO'llAWAT
ER 21
JUL t:Q 1995
PRO . � 50(e _.
Houston and Associates, P.A.
Shallotte, North Caorlina
June1995

lit

Houston and Associates, P.A.
CONSULTING ENGINEERS
4918 Main Street Post Office Box 2927
Shallotte, North Carolina 28459 [phone]
SUBJECT
SHEET NO. 1 OF _
CALCULATED 8Y DATE
CHECKED 6Y DATE _
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Houston and Associates, P.A.
CONSULTING ENGINEERS
4918 Main Street Post Office Box 2927
Shallotte, North Carolina 28459 [phone]
SUBJECT
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CHECKED DATF
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CONSULTING ENGINEERS CALCULATED B1�=r.__ w DATE
4918 Main Strect Post Office Box 2927 CHECKEDBv _______ DATE__._
Shallotte, Worth Carolina 28459 (9191 754-6324 SCALE
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-Ac-p-t- 51-1
FREEDOM -HOMES
SMH 6/21/95
VOLUME OF RUNOFF FROM 1 INCH RAINFALL: 12859 CF
STORM WATER REALEASE METHOD: PIPE
INSIDE DIAMETER OF PIPE: 4 IN.
ELEVATION OF NORMAL POOL (INVERT OF PIPE): 97.1 FT. MSL
AVERAGE SURFACE AREA OF POND BETWEEN
NORMAL POOL AND TOP OF RISER: 11077 SQ. FT.
ELEVATION OF POOL AT DESIGN STORAGE: 98.3 FT. MSL
TIME INCREMENT FOR ROUTING: 2 HR.
TIME
ELEV.
HEAD
FLOWRATE TYPE FLOW VOLUME END ELEV
.9f,
coc :5
0
;98.3 1.200005
8.126798E--02 PIPE 585.1294 98.24718
2
98.24718
1.147179
7.945909E-02 PIPE 572.1055
98.19552
4
98.19552
1.095528
7.764968E-02 PIPE 559.0777
98.14505
6
98.14505
1.045052
7.583975E-02 PIPE 546.0461
98.09575
8
98.09575
.9957504
7.402923E-02 PIPE 533.0104
98.04763
10
98.04763
.9476318
7.221839E--02 PIPE 519.9724
98.00069
12
98.00069
.9006882
.0704069 PIPE 506.9297 97,.95492
14
97.95492
.8549271
6.859503E-02 PIPE 493.8842
97.91034
16
97.91034
.8103409
6.678239E-02 PIPE 480.8332
97.86692
18
97.86692
.7669296
6.496895E-02 PIPE 467.7764
97.8247
20
97.8247
.724701 6.315497E-02 PIPE 454.7158 97.78364
22
97.78364
.6836471
6.134005E-02 PIPE 441.6483
97.74378
24
97.74378
.643776
5.952445E-02 PIPE 428.5761
97,70508
26
97.70508
.6050796
5.770777E-02 PIPE 415.4959
97.66758
28
97.66758
.5675736
5.589064E--02 PIPE 402.4126
97.63124
30
97.63124
.5312424
5.407224E-02 PIPE 389.3201
97.59609
32
97.59609
.4960938
5.225285E-02 PIPE 376.2205
97.56212
34
97.56212
.4621277
5.043233E-02 PIPE 363.1128
97.52934
36
97.52934
.4293442
4.861058E-02 PIPE 349.9962
97.49774
38
97.49774
.3977432
4.678745E-02 PIPE 336'.8697
97.46733
40
97.46733
.3673325
4.496325E-02 PIPE 323.7354
97.4381

42
97.4381
.3381043 4.313733E-02 PIPE
310.5888 97.41006
44
97.41006
.3100662 .04131 PIPE 297.432 97.38321
46
97.38321
.2832108 3.948052E-02 PIPE
284.2598 97.35754
48
97.35754
.2575455 3.764913E-02 PIPE
271.0738 97.33307
50
97.33307
.2330704 3.581555E--02 PIPE
257.8719 97.30978
52
97.30978
.2097855 .0339794 PIPE 244.6517
97.28769
54
97.28769
.1876984 3.214092E-02 PIPE
231.4147 97.2668
56
97.2668
.1668015 3.029898E-02 PIPE
218.1526 97.2471
58
97.2471
.1471024 2.845364E-02 PIPE
204.8662 97.22861
60
97.22861;
.1286087 2.660499E-02 PIPE
191.556 97.21131
62
97.21131
.1113129 2.475145E-02 PIPE
178.2105 97.19522
64
97.19522
9.522248E-02 2.289274E-02
PIPE 164.8277 97.18034
66
97.18034
8.034516E-02 2.102848E-02
PIPE 151.4051 97.16667
68
97.16667
6.667328E-02 1.915596E-02
PIPE 137.9229 97.15422
70
97.15422
5.422211E-02 1.727493E--02
PIPE 124.3795 97.14299
72
97.14299
4.299164E-02 1.538226E-02
PIPE 110.7522 97.13299
74
97.13299
.0329895 .0134746 PIPE 97.01711
97.12423
76
97.12423
2.423096E--02 1.154817E-02
PIPE 83.14685 97.11672
78
97.11672
1.672363E-02 9.593858E-03
PIPE 69.07578 97.11049
80
97.11049
1.049042E-02 7.59844E-03 PIPE 54.70877 97.10554
82
97.10554
5.54657E-03 5.525102E-03 PIPE 39.78074 97.10195
84
97.10195
3..953125E-03 3.278635E-03
PIPE 23.60617 97.09982
3 S7 ��4�5

PROJECT I.D. - FREEDOM HOMES SW CROSSOVER PIPE
DESIGN FLOWRATE = 1.3 CFS
RISER DIAMETER.... 0 INCHES.
RISER ELEVATION... 0 FT.
CULVERT DIAMETER... 12 INCHES
CULVERT LENGTH.... 275 FT.
INVERT -IN......... 96.4 FT.
INVERT -OUT ... :..... 95.5 FT.
TAILWATER ELEVATION... 97.2 FT.
MANNING'S N VALUE.... .011
INLET COEF. FOR INLET CONTROL... .6
INLET COEF. FOR OUTLET CONTROL... .5
COMPUTED WATER SURFACE ELEVATION BASED ON:
INLET CONTROL .............. 97.01829 FT.
OUTLET CONTROL ............. 97.52625 FT.
WEIR FLOW .................. 0 FT.
HIGHEST ELEVATION COMPUTED IS THE ACCEPTED ELEVATION.

to
EROSION CONTROL AND STORMWATER CALCULATIONS
for
FREEDOM HOMES
D
I�IJG 0 7 1995 Prepared By
D E M
Mom@ftm amyl P.&
CONSULTING ENGINEERS
Shallotte, North Carolina
July 1995

0
Aouston and Associates, P.A.
CONSULTING ENGINEERS
491.8 Main Street Post Office Box 2927
Shallottc, North Carolina 28459 [phone]
JOB -
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CALCULATED oY �"'-� DATE
CHECY,ED B DArF /9f
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? SHEET NO. Z OF _
CONSULTING ENGINEERS CALCULATED B �� DATE_ _�1:05S
4918 Main Street Post Office Box 2927 CHECKED BY — DAT 4 s
Shallotte, North Carolina 28459 [phone] SCALE
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Houston. and Associates, -A• SHEET NO. OF_^�,
CONSULTING ENGINEERS CALCULATED BY DATF
4915 Main Street Post Office I3ox 2927 CHECKED BY DATE9S
Shallotte, North Carolina 28459 [phone] SCALE
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10 REM THIS 1S A PROGRAM TO DO SIMPLE STORMWATER ROUTING ASSUMING
20 REM INITIAL ELEVATION IS AT THE ELEVATION REPRESENTED BY THE
30 REM NORMAL POOL (BOTTOM OF ORIFICE OR INVERT OF. PIPE) PLUS THAT OBTAINED
40 REM BY ADDING THE REQUIRED STORAGE FROM RUNOFF FROM 1.5 INCHES (SA) OR
50 REM 1.0 INCH RAINFALL. THE PROGRAM COMPUTES BOTH ORIFICE FLOW
60 REM AND PIPE FLOW WITH EACH ITERATION AND CHOOSES THE LOWEST FOR
70 REM INCORPORATION INTO THE ROUTING COMPUTATIONS.
80 PRINT "WHAT IS THE NAME OF THIS PROJECT?
90 PRINT
100 INPUT P$
110 PRINT
120 PRINT "WHAT IS THE DATE?
130 PRINT
140 INPUT D$
150 PRINT
160 PRINT "TYPE IN USER'S (YOUR) NAME?
170 PRINT
180 INPUT N$
190 PRINT
200 PRINT "WHAT IS THE ELEVATION OF NORMAL POOL (BOTTOM OF ORIFICE OR -INVERT OF
PIPE)?
210 PRINT
220 INPUT OE
230 PRINT
240 PRINT "WHAT IS THE AVERAGE OF THE SURFACE AREA BETWEEN NORMAL POOL AND
250 PRINT "TOP OF RISER (SQ. FT.)?
260 PRINT
270 INPUT SA
280 PRINT
290 PRINT "WHAT IS THE DESIGN STORAGE VOLUME?
300 PRINT
310 INPUT VR
320 PRINT
330 PRINT "WHAT IS THE BEGINNING WATER SURFACE ELEVATION?
340 PRINT
350 INPUT WE
360 PRINT
370 PRINT " WHAT IS THE INCREMENTAL ROUTING TIME DESIRED (HR.)?
380 PRINT
390 INPUT IT
400 PRINT
410 PRINT "DOES THIS APPLICATION INCORPORATE AN ORIFICE OR SMALL PIPE
420 PRINT "FOR STORMWATER DISCHARGE? (0 OR P?)
430 INPUT TD$
440 PRINT
450 IF TD$="O" THEN 550
460 PRINT
470 PRINT "WHAT IS THE PIPE DIAMETER (INCHES)?
480 INPUT PD
490 PRINT
500 OD=PD
510 PRINT "WHAT IS THE PIPE LENGTH (FEET)?
520 INPUT PL
530 PRINT
540 GOTO 590
550 PRINT "WHAT IS THE ORIFICE SIZE FOR THIS TRIAL (INCHES)?
560 PRINT
570 INPUT OD
580 OD=OD/12
590 PRINT

600 RM$="ORIFICE"
610 IF TD$="P" THEN RM$="PIPE"
620 T=0
630 H=WE-OE
640 E1 =WE
650 LPRINT " tt;P$
660 LPRINT
670 LPRINT " ";N$;" t';D$
680 LPRINT
690 LPRINT
700 LPRINT "VOLUME OF RUNOFF FROM 1 INCH RAINFALL: ";VR;" CF
710 LPRINT "STORM WATER REALEASE METHOD: ";RM$
720 IF RM$="ORIFICE" THEN 760
730 LPRINT "INSIDE DIAMETER OF PIPE: ";PD;" IN.
740 LPRINT "ELEVATION OF NORMAL POOL (INVERT OF PIPE): ";OE;" FT. MSL
750 GOTO 780
760 LPRINT "ELEVATION OF NORMAL POOL (BOTTOM OF ORIFICE): ";OE;" FT. MSL
770 LPRINT "DIAMETER OF ORIFICE: 11;OD*12;" IN.
780 LPRINT "AVERAGE SURFACE AREA OF POND BETWEEN
790 LPRINT " NORMAL POOL AND TOP OF RISER: ";SA;" SQ. FT.
800 LPRINT "ELEVATION OF POOL AT DESIGN STORAGE: ";WE;" FT. MSL
810 LPRINT "TIME INCREMENT FOR ROUTING: ";IT;" HR.
820 LPRINT
830 LPRINT
840 LPRINT
850 LPRINT "TIME ELEV. 2 HEAD FLOWRATE TYPE FLOW VOLUME END ELE
V Z
860 WHILE H>0
870 QO=.6*3.14 OD/2)A2�(64.4*H)^.5 O
880 IF TD$="O" TH -90"0
890 QP=((PD/12^2*3.14/4)*(64.4*H)^.5)/(1.5+(.8597/PD^1.333)*PL)^.5
900 Q=QO
910 IF TD$=110" THEN 930
920 IF QP<QO THEN Q=QP
930 TF$="ORIFICE"
940 IF TD$ =110" THEN 960'
950 IF QP<QO THEN TF$="PIPE"
960 V=Q*IT*3600
970 HD=V/SA
980 E =WE -HD
990 LPRINT
1000 LPRINT T;" ";El;H;Q;TF$;V;E
1010 E1=E
1020 WE=E
1030 H=E-OE
1040 T=T-+-IT
1050 WEND
1060 END