SW8971226_Historical File_20010418

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FOR
THE LANDING
NORTH'R
I �:: WVqK14 C6 =1@O Ll I
By
m(DmQQ(g)m mm(f.i 1P.&.
CONSULTING ENGINEERS
Shallotte, North Carolina
March 2001

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The Landing
Stormwater Pond Design
3/20/2001 Prepared By: TJC
Checked By: 51 .
Stormwater Pond #3 Design/ Revision 3/20/2001
Total Drainage Area.
Impervious Area:
Lots:
Roadways:
Total:
% Impervious:
Permanent Pool Depth:
% TSS Removal:
SA/DA:
Required SA:
Runoff:
"Simple Method"
R,
Volume:
Forebay Volume:
Actual Normal Pool SA:
Depth of Storage:
USE -
SA @ Storage Pool:
Provided Storage:
Fond Elevations:
Bottom Elev.:
Permanent Pool:
Storage Pool:
Flood Pool:
"Freeboard' Elev:
_5.0 Acres
0.840
Acres
0_._Q20
Acres
1.760
Acres
34.6
%
5.8
90°fa
1.95
4,324 SF
1 Inches
0.36
6,674
CF
1,335
CF
6,425
SF (@ 13.8- MSL)
1.0
Feet
1,0
Feet
6.500
SF (@ 14.84- MSL)
6,713
CF
8.00
MSL
13.80
MSL
14.84
MSL
15.39
MSL
15.89
MSL

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The Landing
Dmwdown Calculations
3/20/2001
Stoff nvmte.r Pond #3 Draw down
'411OWNU 111"!:ftk" 1:7C tsY+li'&Y- 5i�"p3f&L MM i={fi rvr6 a"
AREAS (FT^2)
ORIFICE DIA. NUMBER OF ORIFICES
INCHES 1 2 3 4
1 0.005 0.011 0.016 0.022
DATA INPUT
NORMAL POOL AREA = 0. 147 ACRES
INCHES OF RAINFALL = 1.0 p INCHES
BASIN AREA = 5.013 ACRES
IMPERVIOUS AREA = 1,7 ;7 ACRES
NORMAL POOL ELEVATION = 13.80 FEET
ORIFICE AREA = 0.00 5 FEET
STORAGE POOL AREA = 0.1492 ACRES
TIME INCREMENT OF ROUTING = 2.0 HOURS
ORIFICE COEF. = 0.6
INPUT RESULTS
RUNOFF COEF. (Rv) = 0.3630
ELEVATION OF POOL AT STORAGE _ 14.84 R>=T
NORMAL POOL AREA = 6,425.00 FEET
VOLUME OF RUNOFF FROM RAINFALL = 6,706.43 FEET
VOLUME OF STORAGE = 6,721.00 FEET'3
Prepared By: TJC
Checked By:SIVA

The Landing
Drawdown Calculations
3/20/2001
Drawdown Calculations For Pond Orfice
Prepared By: TJC
Checked By: .
TIME
ELEVATION
FEET
HEAD
FEET
FLOWRATE
CPS
VOLUME
CIF
END ELEV.
FEET
0
14.84
1.0400
0.02455
176.77
14.81
2.0
14.81
1.0125
0.02422
174.42
14.75
4.0
14.75
0.9454
0.02341
168.54
14.68
6.0
14.68
0.8806
0.02259
162.66
14.62
8.0
14.62
0.8180
0.02177
156.78
14.56
10.0
14.56
0.7577
0.02096
150.89
14.50
12.0
14.50
0.6997
0.02014
144.99
14.44
14.0
14.44
0.6439
0.01932
139.10
14.39
16.0
14.39
0.5904
0.01850
133.19
14.34
18.0
14.34
0.5392
0.01768
127.28
14.29
20.0
14.29
0.4902
0.01686
121.37
14.24
22.0
14.24
0.4436
0.01603
115.44
14.20
24.0
14.20
0.3992
0.01521
109.51
14.16
26.0
14.16
0.3570
0.01439
103.57
14.12
28.0
14.12
0.3172
0.01356
97.63
14.08
30.0
14.08
0.2797
0.01273
91.67
14.04
32.0
14.04
0.2444
0.01190
85.69
14.01
34.0
14.01
0.2114
0.01107
79.71
13.98
36.0
13.98
0.1808
0.01024
73.70
13.95
38.0
13.95
0.1524
0.00940
67.68
13.93
40.0
13.93
0.1264
0.00856
61.63
13.90
42.0
13.90
0.1027
0.00772
55.55
13.88
44.0
13.88
0.0813
0.00687
49.44
13.86
46.0
13.86
0.0623
0.00601
43.27
13.85
48.0
13.85
0.0457
0.00515
37.05
13.83
50.0
13.83
0.0314
0.00427
30.73
13.82
52.0
13.82
0.0196
0.00337
24.27
13.81
54.0
13.81
0.0103
0.00244
17.57
13.80
56.0
13.80
0.0035
0.00143
10.28
13.80
58.0
13.80
-0.0004
#NUM!
#NUM!
#NUM!
Drawdown Time
Orifice Size = 1 inches

ma
S83% TSS REMOVAL WITH 30'
_MPEr' . %
3 - _
:3 5FT
= OFT
4 5FT
5 OFT
-5 3FT
0-_
5FT
7 FT
7 SF`I'
;0%
z
.8
.7
.6
.5
20
_.
1.3
1 2
1.1
1.0
9
,7
_6
5
30%
=.5
".
2.2
=_.9
1.8
1.6
�.:
1.3
1.2
:.0
.9
40�
3.0
%.6
2.4
2.1
1.S
1._
�1.4
1.0
50%
=.=
3.7
3.3
3.0
2.7
2.4
'2._
1.8
5
1.3
60%
_•
?.5
3.8
3.5
.3.2
2.9
2.5
2.3
_.0
1.6
7 0 %
5.2
..5
4.1
3.7
3.1
2.3
2.5
-.1
1.8
80%
:.?
-..
6.0
3.2
4.7
4.2
3.7
3.2
2.7
2.2
2.0
90%
6.5
5.8
5.3
4.8
4.3
3.3
3.3
2.8
1.3
100%
=.2
7.4
6.8-
6.2
5.6
5.0
4.4
3.8
3.2
2•6
SA/DA - > 90% TSS REMOVIL
OR W'ET DETENTION WITHOUT -VEGETAI"IVI = ILTER
IMPE - %
3. = =
3 .5FT
-' . OFT
4. 5FT
5. OFT
5. 5FT
. OF-
6. 5FT
7. OFT
7. 5FT
10%
_.3
1.0
.8
.7
.6
.5
.1
.3
.1
20 %
_.=
2.0
1.8
1-.7
1.5
1
1. 2
1 0
6
30=
, _.3-
3.0
2.7
2 5
2.2
_.9
1.;
1.3
8
-0%
:.5
4.o
3.5
3.1
2.8
.
1.8
�.
?.1
30`=_
�.6
5.0
'.3
3.9
3.5
3.1
2. r
2.3
1.9
1.5
60%
-.a
6.0
5.3
4.8
4.3
3.9
3..,
2.9
= -
1.9
70%
:.1
7.0
6:0
5.5
5.0
4.5
3.9
3'A
2.9
2.3
80%
:.4
8.0
7.0
6.4
5.7
5.2
4.6
41-.0
3.4
2.8
SO%
":.7
9.0
7.9
7.2
6.5
5.9
5.2
4.6
9
3.3
1001%
12.0
10.0
8-8
8.1
7.3
6.6
5.8
5.1
4.3
3.6
S,¢10" S. 8 f =�1 iS
n

HOUSTON and ASSOCIATES, P.A.
Consulting Engineers
S ORM CAROLINA 28459
Telephone [phone] Pine Street
Facsimile [phone] 0`� ..,� Post Office Box 627
{fir
7ywsday, March 20, 2001
Ms. Noelle Luthe n��-ironmental Engineer
Division of Water Quality
NC Department of Environment and Natural Resources
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Subject: The Landing at Southport, Phase III
SW8 971226
Revised Plans and Calculations
Dear Ms. Lutheran:
We have revised the plans for the subject project in accordance with our
previous correspondence outlining a Plan of Action. Enclosed are two copies of
the revised plans with the corresponding calculations.
The back lot swale labeled S lA on Sheet 14 of 16 was previously designed
to be piped under Road "B". This culvert was never installed and would now
require cutting the street to install it. We propose to connect Swale S lA by a
new pipe and junction box connected to the outlet from the outlet structure of
Stormwater Pond # 1. Please see Sheets 4, 5, and 14 of 16 and the calculations
which demonstrate that this arrangement will function properly.
Stormwater Pond #3 was redesigned to treat the additional now from
Basin #6. This flow was originally to be treated in a vegetated swale. The
proper Swale was not installed. To correct this problem, the pipe sections
labeled SD "A" - SD "H" were routed to Stormwater Pond #3 thus separating
the offsite flow from the project flow. This solution created an unavoidable
grade conflict in the two pipes which required the design of an inverted siphon.
Details of the inverted siphon are on Sheet 14 of 16. Also, the dimensions of
Stormwater Pond #3 were revised to treat the extra drainage area. Please see
Sheets 1, 3, and 14 of 16.
We appreciate your attention to this matter, and trust that this
completes the approval process. Should you have any comments or require any
additional information, please do not hesitate to contact our office at your
convenience.
Sincerely,
T. son Clark, E.I.
Houston and Associates, P.A.
Enclosures
pc: Mr. David Edwards, bluegreen
File; 01-0134 (The Landing at Southport, Phase III, SW)

Telephone [phone]
Facsimile [phone]
HOUSTON and ASSOCIATES, P
Consulting Engineers
SHALLO=, NORTH CAROLINA 28459
ne Street
Box 627
Tuesday, January 30, 2001
Ms. Z1ToeHe Li theral-, Envira-m-npntal Engineer
Division of Water Quality
NC Department of Environment and Natural Resources
127 Cardinal Drive Extension
Wilmington, North Carolina 28405
Subject: The Landing at Southport-, Phase III
SW8 971226 MOD Notice of Violation
Plan of Action
Dear Ms. Lutheran:
We received a copy of the Notice of Violation and Recommendation for
Enforcement on January 15, 2001. Since that time, Mr. Fred Ward of
bluegreen and myself have been in contact with you separately regarding this
matter and the three of us met at the site yesterday.
The purpose of this letter is to outline a Plan of Action in response to the
Notice of Violation letter and to update you on the ongoing efforts of bluegreen
Corporation to bring this project into compliance with the subject permit.
After the initial visit on January 10, 2001, you visited the project again on
Friday, January 19, 2001 and you witnessed the remedial construction efforts
underway on the stormwater infrastructure.
As an overall statement relating to the client's intent regarding this
matter, bluegreen fully intends to immediately address all issues contained
within the letter dated January 12, 2001.
This letter will respond, in the same order, to each of the items of
deficiency listed within your letter. The specific item responses are as follows:
1. SW1, SW2, SW3, SW4, SW7, SW8, .and SW9 are under construction such
that the pipe is being removed and the swales installed according to the
approved plans. SW 10, at Lot 137, is going to be constructed in
accordance with the approved plans. It is necessary for the client to
obtain an easement from the current lot owner since the lot was conveyed
prior to recording an easement. Our site visit confirmed that the Swale
could be constructed as designed with minimal impact on the lot.
2. 1) The parking lot Swale will be regraded to allow the runoff from the
parking lot to be treated by the swale. If necessary, the pavement
grade will be modified to ensure that runoff is directed into the proper
Swale for treatment as indicated on the approved plans.
2) Our firm is currently investigating alternatives to address this
problem. One alternative, to connect the swale to the outlet
structure of Pond # 1, appears to be the most feasible at this time. We
are also exploring infiltration and increasing the size of Pond # 1 to
accept the water for treatment.

Ms. Lutheran Page Two 3W8 971226 MOD
January 30, 2001 Plan of Action
3) a) Inspection of all swales and ponds has been completed and
periodic inspection will be performed in accordance with the
permit conditions from this point forward. The homeowners
association will be made aware of this very important issue when
responsibility for maintenance iv transferred to the POA from the
b)
c)
d)
e)
fl
developer.
Sediment removal has been performed.
Maintenance of the vegetation is being
continue.
Side slopes of ponds are being repaired.
Side slopes of ponds are being regraded
revegetated.
performed and will
where necessary and
The outlet devices on all ponds are being inspected, cleaned and
repaired.
4. 1) This project will receive the proper professional certification when all
construction is complete and these issues are resolved between your
department and the developer.
5. 1) It is my understanding from the client that the deed restrictions have
been forwarded to your office again.
In addition to the items listed within the NOV letter, it was discovered
during yesterday's site visit that SW6 had not been installed as designed. The
curb outlet system was combined with offsite stormwater. The offsite portion
was designed and approved to bypass the swale. Our proposed solution is that
Stormwater Pond #3 will be redesigned to include the runoff, which was to have
been treated by SW6, and the offsite stormwater will bypass the redesigned
pond.
All work will be completed by March 30, 2001.
We appreciate your attention in this matter. Should you have any
comments or require any additional information, please do not hesitate to
contact our office at your convenience.
JHouston, P.E.
4s on and Associates, P.A.
Enclosures
pc: Mr. Fred Ward, bluegreen
File; 97-0134 r T he banding at Southport, SW Certification)

='eb-14-01 03:10P Houston and Associates PA 910 754 2121
HOUSTON and ASSOCIATES, P.A,
Telephone (910) 7'54-6324 Consul a`n ee"
Facsimile (91o) 754-2121 SHALLC?°i"M, N� CAROLINA 28459
PAGE I of DATE
TO: 1 i ; IM'r�l'.r.�r.
r O �►� j�l*A.
P_O1
117 Pine Street
Post Office Box 627
OR HOUSTON and ASSOCIATES. P.A.
Cono ting Engineers
AT. SHALLO"i M. NORTH CAROLINA. 28459
Pam"# PHONE [phone]
FAX# _.._ � �_ �- �. FAX # [phone]
Remarks :
FOE- yo c)g-' t' i'p.

Feb-14-01 03:11P Houston and Associates PA 910 754 2121 P.02
Telephorm (91o) 754-6324
Fgcsimft [phone]
I' OUSTON and A ICiATES, P.A.
Conant �►+eers
SNALI OM, NORM CAROLINA 28459
117 Fine Street
Post OtIiGe Box 827
Tuesday, January 30, 2.0-0r
Ms. Noelle Lutheran, Enviraxuraatental Engineer
Division of 'Water Quality
NC Department of Environment and Natural Resources
127 Cardinal Drive .'Extension
Wilmington, North Carolina 28405
Slubject: The Landing at Southport, phase III
SW8 971226 MOD Notice of Violation
Plan of Action
Dear Ms. Lutheran:
We received a copy of the Notice of Violation and Recommendation for
Enforcement on January 1S, 2001. Since that time, Mr. Fred Ward of
bluegreen and myself have, been In contact with you separately regarding this
:matter and the three of us met at the site yesterday.
The purpose of this letter is -to outline a Plan of Action in response to the
Notice of Violation letter and to update you on the ongoing efforts of bluegreen
Corporation to bring this project into compliance with the subject permit,
After the initial visit on January 10. 2001, you visited the project: again on
Friday, January 19, 2001 and you witnessed the remedial construction efforts
underway on the stor mwater infrastructure.
As an overall statement relating to the client's intent regarding this
matter, bluegreen fully intends to immediately address all .issues contained
within the Letter dated January 12. 2001.
This letter will respond, in the same order, to each of the items of
deficiency listed within your letter. The specific item .responses are as follows:
1. SW1, SW2, SW3, SW4, SW7, SW8, and SW9 are under construction such
that the pipe is being removed and the swales installed according to the
approved . plans. SW10, at Lot 137, is going to be constructed in
accordance with the approved plans. It is necessary for the client to
obtain an easement from the current lot owner since the lot was conveyed
prior to recording an easement. Our site visit confmned that the swale
could be constructed as designed with, minimal impact on the lot.
2. 1) The parking lot Swale will be regraded to allow the runoff from the
parking lot to be treated by the Swale. If necessary, the pavement
grade will be modified to ensure that runoff is directed into the proper
swale for treatment as indicated on the approved plans.
2) Our tlrxn is currently Investigating alternatives to address this
problem. One alternative. to connect the Swale to the outlet
structure of Pond # 1, appears to be the most feasible at this time. We
are also exploring infiltration and increasing the size of Pond # 1 to
accept the water for treatment.

Feb-14-01 03:12P Houston and Associates PA 910 754 2121
P.03
Ms. Lutheran
Janu=7 30, 2001
Page TWO
$W8 971226MOD
Flan of Action
3) a) Inspection of all swales and ponds has been coYnpleted. and
periodic inspection will be performed in accordance with the
permit conditions from this point forward. The horrseo em
association will be made aware of this very irnportant issue when
responsibility for maintenance is transferred to the poA from the
developer.
b) Sediment removal has been performed.
c) Maintenance of the vegetation is being performed and will
continue.
d) Side slopes of ponds are being repaired.
e) Side slopes of ponds are being regraded where necessary and
r+evvegetated.
f) The outlet devices on all ponds are being inspected, cleaned and
repaired
4. 1.) This p►ro)ect will receive the proper professional certification when all
construction is complete and these issues are resolved between your
department and the developer.
5. 1) It is my understanding from the client that the deed restrictions have
been forwarded to your office again.
In addition to the Items listed within the NOV letter, it. was discovered
during yesterday's site visit that SW6 had not been Installed as designed. The
curb outlet cyst m was combined with Offsite storruwater. The oftsite portion
was designed and approved to bypass the swale. Our proposed solution is that
Stormwater pond #3 will be redesigned to include the runoff, which was to have
been treated by SW6, and the offsite storrnwater will bypass the redesigned
pond.
All work will be completed by March 30, 2001.
We appreciate your attention in this smatter. Should you have any
comments or require any additional information, please do not hesitate to
contact our office at your convenience.
Houston, P.E.
in and Associates, P.A.
pe: Mr. Fred Ward, bluegreen
File; 97-0134 (The Landing at Southport. SW Certification)

P. 1
* * * COMMUNICATION RESULT REPORT ( OCT. 4.2001
FILE MODE OPTION
314 MEMORY TX
REASON FOR ERROR
E-1) HANG UP OR LINE FAIL
E-3) NO ANSWER
ADDRESS (GROUP)
8-9104577771---
2:46PM )
TTI NCDENR WIRO
RESULT_ PAGE
E-3)3)3)3)3) P. 0i2
E-2) BUSY
E-4) NO FACSIMILE CONNECTION
ti.tate of North Carolina
Department of EnAro=ent and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor William 0. Ross jr., Secretary
Date:
To:
CO:
FAX
REMARKS:
PAX COVER SHEET
No. Of Pages:
From:
CO:
/ PAX#:10-350-2004
127 Cardinal Drive Extension, Wilmingtnp, N.C. 28405.3945 Telephone (a' f 0) 395.3900 Fnx [phone]
An Rquol Oppartunily Aifirmatire Action Tmployer

State of North Carolina
Department of Environment and Natural Resources
Wilmington Regional Office
Michael F. Easley, Governor William G. Ross jr., Secretary
FAX COVER SHEET
Date: /© 6
To: .
CO: owl
FAX
9.5-7-7i7/
REMARKS:
No. Of Pages: . Z _
From:
CO: _ "NiQ
FAX#: [phone]
127 Cardinal Drive Extension, Wilmington, N.C. 28405-3845 Telephone [phone] Fax [phone]
An Equal Opportunity Affirmative Action Employer

Michael F. Easley, Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and natural Resources
M
October 4, 2001
Mr. David Edwards, Vice President
bluegreen Corporation
1829 Zion Hill Road
Bolivia, NC 28422
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
Wilmington Regional Office
Subject: Stormwater Compliance
--The Landing @ Southport
Stormwater Project No. 971226 Modification
Brunswick County
, . Dear Mr. Edwards:
On September 13, 2001, the Wilmington Regional Office performed a Compliance Inspection at The Landing @
Southport in Brunswick County, North Carolina. The purpose of the inspection was to determine if the
violations, outlined in the Notice of Violation issued on January 12, 2001, had been corrected. It has been
determined that The Landing @ Southport is, overall, in compliance with Stormwater Permit Number SW8
971226 Modification issued on April 4, 2001.
The only issue that still needs serious attention prior to the transfer of ownership to The Landing's Homeowners'
Association is the lack of permanent vegetation on the side slopes of thewater quality swales and the three wet
detention ponds. These areas must be vegetated with permanent seeding according to the North Carolina
Sedimentation and Erosion Control Manual. Love Grass or Bahia (alone) are not approved vegetation. When
mowed to less then six inches, these grasses leave bare, erodible areas. Please do whatever is necessary to
establish permanent ground cover that can easily be maintained. This may require the use of sod and/or
irrigation. All woody vegetation must be removed from the side slopes ofpond #1. Please be aware that the
side slopes of pond #3 have become too steep. If the Landing's HOA does riot feel that these slopes can be
maintained, please slope back to 3:1 prior to seeding with the required vegetation.
If you have any questions concerning this matter, please. call me at (910)-395-3900.
Sincerely,
�e
Noelle Lutheran
Environmental Tech V
RSS\nml: S:\WQS\STORMWAT\LETTERS\971226.00T
cc: Wilmington Regional Office
Jim Henry, The Town of Southport
The Landing Homeowners' Association
N.C. Division of Water Quality 127 Cardinal Drive Extension Wilmington, N.C. 28405 [phone] Fax[phone]
Customer Service
800-623-7748