HomeMy WebLinkAboutSW8970728_COMPLIANCE_20040423STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW � lO7ab
DOC TYPE
❑CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD
OF WA7-FR Michael F. Easley, Governor
p William G. Ross Jr., Secretary
G North Carolina Department of Environment and Natural Resources
co Alan W. Klimek, P.E.,Director
(&'�
.� Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
April 23, 2004
Mr. Keith Walker
Camellia Court Limited Partnership
315 Turner Street
Beaufort, NC 28516
NOTICE OF INSPECTION:
Camellia Court Apartments
Stormwater Project No. SW8 970728
Carteret County
Dear Mr, Walker:
Please find attached a copy of the completed form entitled "Stormwater Compliance
Inspection Report". The report summarizes the findings of a recent inspection of the
project's stormwater controls conducted on April 21, 2004 to determine compliance with
Stormwater Permit Number SW8 970728 issued on January 23, 1998.
A summary of the findings and comments are noted under Section 4 of the report.
Please inform this Office in writing before May 25, 2004, of the specific actions that will
be undertaken and the time frame required to correct the deficiencies. Failure to provide
the requested information, when required, may initiate enforcement action. If you have
any questions please contact me at the Wilmington Regional Office, telephone number
(910) 395-3900.
Sincerely,
Gary Beecher
Environmental Technician
RSSlghb: S:IWQSISTORMWATIINSPECT1970728
cc: Wilmington Regional Office
Gary Beecher
N. C. Division of Water Quality
Wilmington Regional Office
127 Cardinal Drive Extension
Wilmington, NC 28405
(910) 395-3900 Customer Service
(910) 350-2004 Fax 1 800 523-7748
gN—CD E—NR
r:
i.
STORMWATER COMPLIANCE INSPECTION REPORT
1.
7
3.
Project Name: Camellia Court Apartments
Project Number: 970728 Control Measure: Wet Pond
Water Body: Calico Creek Classification: "SC"
Directions to site: In Morehead City turn onto Country Club Rd.
Inspection Date: April 21, 2004
Weather Conditions: Warm and Dry (70's)
Compliance Issues:
Y N
❑ ❑ The drainage area (including offsite) and built -upon area to the permitted
system are per the approved plan. No unpermitted offsite drainage enters
the system.
❑ ❑ All the built -upon area associated with the project is graded such that the
runoff drains to the system.
❑ ❑ For pondslinfiitration, the outlet/bypass structure relative elevations are
per the approved plan. (Must be verified via as -built survey if in question).
❑ ❑ The inlets and outlet structure are located per the approved plans and do
not t cause short-circuiting.
®❑ A trash rack is provided over the outlet weir and orifice.
❑ X All slopes are grassed with permanent vegetation and are not eroding.
❑ ❑ Vegetated slopes are no steeper than 3:1.
❑ ❑ The approximate amount of permitted surface area has been provided.
(Must be verified via as -built survey or designer's certification.)
❑ ❑ Required drawdown devices are correctly sized per the approved plans.
All required design depths are provided.
❑ ® All required parts of the system are provided, such as a vegetated shelf,
and a forebay.
®❑ The designer's certification has been submitted.
❑ ® The required deed restrictions are correctly recorded and submitted.
❑ ❑ The number of lots or outparcels is per the permitted amount.
❑ ❑ The built -upon area on the lots or outparcels does not appear to exceed
the maximum amount (must be verified via as -built survey if in question)
❑ ❑ Curb outlet swales are constructed, located properly, are 100' long and
have dense vegetated cover.
❑ ❑ The road, cul-de-sac, parking lot and sidewalk widths are per the
approved plan.
❑ Required maintenance is being performed.
❑ ❑ Outparcels have their own offsite permit.
❑ ❑ For low density projects, roadside swales are 3:1, vegetated and stable.
❑ ❑ For low density projects, there are no unpermitted pipes on the project.
f
i
4. Required Actions: (Explain each deficiency and what needs to be done to bring
the system back into compliance)
(a) There is no grass on the pond slopes. The grass is required to stabilize the
pond slopes. Due to the lack of grass, the pond is extremely turbid and full of
sediment. Please seed the slopes with grass or sod immediately.
(b) The fore -bay has been blown out. This must be re -built according to the
specifications for the pond.
(c) There is an abundance of trash within and around the pond slopes. Trash pick-
up must be included in the periodic maintenance of the pond.
(d) Please send in a copy of the recorded deed restrictions.
Inspector: Gary Beecher
Water Quality/Wilmington Regional Officel(910) 395-3900 Ext 222
RSSlghb: S:IWQSISTORMWATIINSPECT1970728.Apr04
RECEIVED
MAY ' 1 2 2003
DW
PROD # 5Gu � ' 70 7M M
NARRATIVE
EROSION CONTROL AND
STORMWATER MANAGEMENT
CAMELIA COURT APARTMENTS
OWNER:
CAMELIA COURT LIMITED PARTNERSHIP
315 TURNER STREET
BEAUFORT, NC 28516
252-504-3996
KEITH WALKER
VICE PRESIDENT
ENGINEER:
STROUD ENGINEERING, P.A.
151 A HWY 24
MOREHEAD CITY, N.C. 28557
252-247-7479 ,,,.. r;,:,.
r�•
4�..r•„,, l J.
ire �rF�s_ • u,
KEVIN L. KUHN P.E.
.aSt�
File-. F:1PubliclMastcrlDr:rwiags112491Erosion-Narrasivc Camclia.doc
I. PROJECT DESCRIPTION
Camelia Court Apartments is a an existing commercial development which includes a
stormwater management wet detention pond that drains into Calico Creek. The wet detention pond
was permitted on January 23, 1998 under permit number SW8 970728. Camilia Court Limited
Partnership proposes to increase the wet detention facility to accept and treat runoff from an adjacent
project know as Clearwater on Country Club.
II. STORMWATER MANAGEMENT
The existing permit is for 75,157 sf of impervious surface. The permitted pond is 4 foot deep
with a required surface area of 6,571 sf and required storage volume of 6,199 c£ The designed pond
provided 7,064 sf of surface area and 11,824 cf of storage volume. The existing pond has the
capacity to accept more runoff.
The proposed adjacent project has 55,757 sf of impervious surface that would drain into the
existing pond. The total impervious surface for the pond would increase to 130,914 sf. The total
percent impervious for the pond would increase from 55.72% to 67%. Accordingly, the required
storage volume would increase from 6,199 cf to 10,594 cf. However, the existing pond has 11,824
cf of storage area and can accommodate this requirement.
The proposed adjacent project would increase the drainage area from 134,888 sf to 195,436
sf. Using the existing surface area provided of 7,064 sf and the new drainage area of 195,436 sf,
the SA/DA requirement changes from 4.97% to 3.6%. Interpolating on the 90% TSS removal
SA/DA chart, a 67% impervious coverage with an SA/DA of 3.6% corresponds to a depth of 6.2
feet. Therefore the pond will have to increased in depth from 4 feet to 6.2 feet to meet all of the
requirements.
In conclusion, the original Camelia Court Apartments stormwater detention pond was sized
large enough in both surface area and storage volume to accept the offshe runoff from the Clearwater
on Country Club project. However, the depth of the pond will have to be modified to meet the
SA/DA requirements.
III. EARTH DISTURBING ACTIVITIES
Earth disturbing activities will include construction and installation of the wet -detention
facilities, associated stormwater drainage, water and sewer facilities, roads, parking lots and
buildings.
rile: I'.IPub]islMasterlUrawingsl[2d91Frosion-, larrativc_Camelia.doc
IV. EROSION AND SEDIMENTATION CONTROL MEASURES
The following measures are proposed for the site. If it becomes evident that
additional erosion and sedimentation control. measures are needed, they shall be installed
immediately. It is intended that all grading and excavation activities within a certain area will be
protected as soon as that activity is complete, i.e., drainage swales, utility easements, etc.
A. Sediment Fence - Sediment fence will be utilized as necessary in locations as
shown on plans or as deemed necessary by the engineer to insure that off -site
sedimentation is controlled.
B. Sediment Basins- Stormwater detention pond proposed for the site will serve as a
sediment basins during the construction phase of development.
C. Riprap outlet protection- Riprap to be installed at locations shown on plans to
reduce energy at high velocity areas.
D. Check Dams — Check dams to be installed at location on plans.
E. Seeding - All disturbed areas will be seeded within 14 days following
construction in accordance with the seeding schedule shown on plans.
F. Stone Construction Entrance - Stone construction entrances will be used to reduce
transport of sediment off site.
V. CONSTRUCTION SEQUENCE
A. Initial Activities:
1. Initiate clearing and grubbing operations.
2. Install stone construction entrances.
3. Complete clearing and grubbing operation.
4. Install silt fencing at locations shown.
5. Construct stormwater detention ponds including overflow/outlet devices.
6. Rough grade site
7. Install sewer system.
8. Install stormwater collection system with erosion control measures
specified for inlets, water system, and remaining utilities.
9. Seed all disturbed areas'except areas for building pads within 14 days of
disturbance.
File: I':IPublic1NiasterV)rawings112491Erosion-Narrat ive_Camelil,doc
B. Inspection- Hold Point:
Contractor shall not proceed with any impervious surface construction including
building foundations, slabs, sidewalks or roads until "Item A" initial activities are
completed and a letter from the project engineer indicating that permit requirements
are met is received.
C. Final Activities
1. Construct buildings and install roof gutters as shown on a per building
basis.
2. Construct parking lot, drive way, sidewalks, and walkways.
3. Complete installation of remaining underground utility facilities.
4. Remove accumulated sediment from stormwater detention basins and
perform Final grading of basins.
5. Complete final landscaping and install wet detention basin vegetation as
specified.
V1. DESIGN ASSUMPTIONS
I . Design storm is ten years for project.
2. The rational method was used for design purposes.
VII. WET DETENTION BASIN OPERATION AND MAINTENANCE
I . After every significant runoff producing rainfall event and at least monthly:
A. Inspect the wet detention basin system for sediment accumulation, erosion,
trash accumulation, grass cover, and general condition.
B. Check and clear the orifice and overflow device of any obstructions.
2. Repair eroded areas immediately, re -seed as necessary to maintain good vegetative
cover, mow vegetative cover to maintain a maximum height of six inches, and
remove trash as needed.
3. Inspect and repair the collection system (piping, flumes, swales, riprap) quarterly to
maintain proper function.
4. Remove accumulated sediment from the wet detention basin systems semi-annually
or when depth is reduced to 75% of the original design depth.
Modified fond design depth:
sediment removal benchmark depth
Main Basin
For. ebay
6.20'
4.50'
4.65'
3.38'
Filc: F:1f'ublic\MasterlDrawi ngs1124J1f:rosion-Narr iIive Cannel la.doc
Removed sediment shall be disposed of in an appropriate manner in no way
adversely impacting water quality.
5. Remove cattails and other indigenous plants when they cover 50% of the basin
surface.
VI. COASTAL STORMWATER REGULATIONS
The North Carolina Division of Environmental Management implemented coastal
m storwater regulations in coastal counties on January 1, 1988. These regulations are detailed in 15
NCAC 2H.1000. Stormwater Runoff Disposal. These rules allow for a development to be considered
under various options. This project is submitted for approval in consideration under Section
.1003(d)(2) high density projects.
Filc: 1':\IluhliclMasicr\Drawisigsl3 2491Erosion-Narrative_Camelia.doc
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7 0e- 12
Outlet Control Device
Cd=
0.72
PipeDiameter(ft.)=
0.104
Pipe X-sect. Area (ft^2)=
0.008491
Storage Volume(ct)=
11850
Time increment(min,)=
30
Storage Height(ft)=
1.5
Increment
Sum
Time
Height''
Volume
FIow
Vout
Vnew
min.
min.
sec.
ft.
cf
cfs
cf
cf
30
30
0.5
1.500 ,
11850.000
0.060
0.000
11850.000
30
60
1.0
1.500.
. 11850.000
0.060
108,151
11741.849
30
90
1.5
1 AM
11741.849
0.060
108.151
11633.698
30
120
2.0
1.473'
: 11633.698
0.060
107.656
11526.042
30
150
2.5
1.459:
11526.042
0.059
107.159
11418.883
30
180
3.0
1.445
`' 11418.883
0.059
106.662
11312.221
30
210
3.5
1,432 -
: 11312.221
0.059 -
106.165
11206.055
30
240
4.0
1.418 .
11206.055
0.058
105.668
11-100.387
30
270
4.5
1.405
,.11100,387
0.058
105.171
10995.216
30
300
5.0
1.392
10995.216
0.058
104.674
10890.542
30
330
5.5
1.379
10890.542
0.058
104.177
10786.364
30
360
6.0
1.365
10786.364
0.057
103.680
10682,684
30
390
6.5
1.352
10682.684
0.057
103.183
10579.561
30
420
7.0
1,339.
10579.501
0.057
102.686
10476.815
30
450
7.5
1.326
10476.815
0.056
102.189
10374.627
30
480
8.0
1.313
10374.627
0.056
101.692
10272.935
30
510
8.5
1.300
10272.935
0.056
101.195
10171.740
30
540
9.0
1.288
10171.740
0.056
100.697
10071.043
30
570
9.5
1.275
10071,043
0.055
100.200
9970.843
30
600
10.0
1.262
9970.843
0.055
99.703
9871,140
30
630
10.5
1.250,
9871.140
0.055
99.206
9771.934
30
660
11.0
1.237
9771.934
0.055
98.708
9673.226
30
690
11.5
1.224
9673.226
0.054
98.211
9575.015
30
720
12.0
1.212
9575,015
0.054
97.714
9477.301
30
750
12.5
1.200
9477.301
0.054
97.217
9380.084
30
780
13.0
1.187
9380.084
0.053
96.719
9283.365
30
810
13.5
1.175
9283.365
0.053
96.222
9187.143
30
840
14.0
1.163 -
9187.143
0.053
95.725
9091.418
30
870
14.5
1.151
9091.418
0.053
95.227
8996.191
30
900
15.0
1.139
8996.191
0.052
94.730
8901.461
30
930
15.5
1.127..
8901.461
0.052
94.232
8807.229
30,
960
16.0
1.115�:
8807.229
0.052
93.735
8713.494
30
990
16.5
1.103
8713.494
0.052
93.237
8620.257
30
1020
17.0
1.091
8620.257
0.051
92.740
8527.517
30
1050
17.5
1.079
8527.517
0.051
92.242
8435.274
30
1080
18.0
1.068
8435.274
0.051
91.745
8343.529
30
1110
18.5
1.056 :_
8343.529
0.050
91.247
8252.282
30
1140
19.0
1.046.
8252.282
0.050
90.750
8161.532
30
1170
19.5
1.033 '
8161.532
0.050
90.252
8071.280
30
1200
20.0
1.022.
8071.280
0.050
89.755
7981.525
30
1230
20.5
1.010: ;
7981.525
0.049
89.257
7892.268
30
1260
21.0
0.999,
7892.268
0.049
88.759
7803.509
30
1290
21.5
0.988
7803,509
0.049
88.262
7715.248
30
1320
22.0
0.977 ,
7715.248
0.048
87.764
7627.484
8 CF i2
30
1350
22.5
0.966
7627.484
0.048
87.266
7540.218
30
1380
23.0
0,954
..7540.218
0.048
86,768
7453.449
30
1410
23.5
0.943
7453.449
0.048
86.271
7367.179
30
1440
24.0
0,933
7367.179
0.047
85.773
7281.406
30
1470
24.5
0.922
7281.406
0.047
85.275
7196.131
30
1500
25.0
0,911
7196.131
0.047
84.777
7111.354
30
1530
25.5
0.900
.7111.354
0.047
84.279
7027.075
30
1560
26.0
0.890 •
. 7027.075
0.046
83.781
6943.293
30
1590
26.5
0.879 .
, 6943.293
0.046
83.283
6860.010
30
1620
27.0
0.868
6860.010
0.046
82,785
6777.225
30
1650
27.5
0.858
6777.225
0.045
82.287
6694.937
30
1680
28.0
0.847
6694,937
0.045
81.789
6613.148
30
1710
28.5
0.837
6613.148
0.045
81.291
6531.857
30
1740
29.0
0.827 " '
' 6531.857
0.045
80.793
6451.064
30
1770
29.5
0.817
6451.064
0.044
80.295
6370.769
30
1800
30.0
0.806 "
- 6370.769
0.044
79,797
6290,972
30
1830
30.5
0.796
6290.972
0.044
79.299
6211.673
30
1860
31.0
0.786 . '
6211.673
0.044
78.801
6132.872
30
1890
31.5
0.776
6132.872
0.043
78.302
6054.570
30
1920
32.0
0.766.
6054.570
0.043
77.804
5976,766
30
1950
32.5
0.757 ' ..
5976,766
0.043
77.306
5899.460
30
1980
33.0
0.747
5899.460
0.042
76.808
5822.652
30
2010
33.5
0.737 .
5822.652
0.042
76.309
5746.343
30
2040
34.0
0.727
5746.343
0.042
75.811
5670.532
30
2070
34.5
0.718
5670.532
0.042
75.312
5595.220
30
2100
35.0
0.708 -
5595.220
0.041
74.814
5520.406
30
2130
35.5
0.699.
5520.406
0.041
74.315
5446.090
30
2160
36.0
0.689
5446.090
0.041
73.817
5372.273
30
2190
36.5
0.680" .
5372.273
0.040
73.318
5298.955
30
2220
37.0
0.671-
5298.955
0.040
72.820
5226.135
30
2250
37.5
0,662. :
5226.135
0.040
72.321
5153.814
30
2280
38.0
0,652.
5153.814
0.040
71.823
5081.991
30
2310
38.5
0.643 '
_ 5081.991
0.039
71,324
5010.667
30
2340
39.0
0.634
5010.667
0.039.
70.825
4939.842
30
2370
39.5
0.625,.:
4939.842
0.039
70.326
4869.516
30
2400
40.0
0.616:
4869.516
0.039
69.828
4799.688
30
2430
40.5
0.608:...
4799.688
0.038
69.329
4730.359
30
2460
41.0
0.599
4730.359
0.038
68.830
4661.529
30
2490
41.5
0,590
4661,529
0.038
68.331
4593.198
30
2520
42.0
0.581 ':
4593.198
0.037
67.832
4525.366
30
2550
42.5
0.573
4525.366
0,037
67.333
4458.033
30
2580
43.0
0.564'
4458.033
0.037
66.834
4391.199
30
2610
43.5
0.556 .:
4391.199
0.037
66.335
4324.864
30
2640
44.0
0.547
4324,864
0.036
65.836
.4259.029
30
2670
44.5
0.539;
4259.029
0,036
65.337
4193.692
30
2700
45.0
0.531.
4193.692
0.036
64.837
4128,854
30
2730
45.5
0.523
4128.854
0.035
64.338
4064.516
30
2760
46.0
0.514:
4064.516
0.035
63,839
4000.677
30
2790
46.5
0.506:
4000.677
0.035
63.340
3937.338
30
2820
47.0
0.498,
3937.338
0.035
62.840
3874.498
30
2850
47.5
0.490.
3874.498
0,034
62.341
3812.157
30
2880
48.0
0.483
3812.157
0.034
61.841
3750.316
30
2910
48.5
0.475 ' .
3750.316
0.034
61.342
3688.974
30
2940
49.0
0.467'. `
3688.974
0.034
60.842
3628.132
30
2970
49.5
0.459'
3628.132
0.033
60,343
3567,789
30
3000
50.0
0.452.. ,
3567.789
0.033
59.843
3507.946
30
3030
50.5
0.444
3507.946
0.033
59.343
3448.603
30
3060
51.0
0.437
3448.603
0.032
58.843
3389.760
30
3090
51.5
0.429
3389.760
0.032
58.343
3331.416
30
3120
52.0
0.422
3331.416
0.032
57.844
3273.573
30
3150
52.5
0.414
3273.573
0.032
57.344
3216.229
30
3180
53.0
0.407
3216,229
0,031
- 56.844
3159.386
30
3210
53.5
0,400
3159,386
0.031
56.344
3103.042
30
3240
54.0
0.393 :'
3103.042
0.031
55.843
3047.199
30
3270
54.5
0.386...-
3047.199
0,030
55.343
2991.855
30
3300
55.0
0.379
2991.855
0.030
54,843
2937.012
30
3330
55.5
0.372
2937.012
0.030
54.343
2882.670
30
3360
56.0
0.365
2882.670
0.030
53.842
2828.827
30
3390
56.5
0.358 . ,
, 2828.827
0.029
53.342
2775.485
30
3420
57.0
0.351
2775,485
0.029
52.841
2722.644
30
3450
57.5
0.345.
2722.644
0.029
52,341
2670.303
30
3480
58.0
0.338
2670.303
0.029
51.840
2618.463
30
3510
58.5
0.331 :.
2618.463
0,028
51.339
2567.124
30
3540
59.0
0.325 -
2567.124
0.028
50,839
2516.285
30
3570
59.5
0.319 ;
. 2516.285
0.028
50.338
2465.947
30
3600
60.0
0.312
2465.947
0.027
49,837
2416.110
30
3630
60.5
0.306-'.
2416.110
0.027
49.336
2366.775
30
3660
61.0
0.300,
2366.775
0.027
48.835
2317.940
30
3690
61.5
0.293
2317.940
0.027
48.334
2269.606
30
3720
62.0
0.287
2269.606
0.026
47.832
2221.774
30
3750
62.5
0.281
: 2221.774
0.026
47.331
2174.443
30
3780
63.0
0.275
2174.443
0.026
46.830
2127.613
30
3810
63.5
0.269'.
2127.613
0.025
46.328
2081.285
30
3840
64.0
0.263 ..
2081.285
0.025
45.827
2035.459
30
3870
64.5
0.258 ,
2035.459
0.025
45.325
1990.134
30
3900
65.0
0,252
1990.134
0.025
44.823
1945.311
30
3930
65.5
0,246
1945.311
0,024
44.321
1900.989
30
3960
66.0
0.241
1900.989
0,024
43.819
1857.170
30
3990
66.5
0.235
1857.170
0.024
43.317
1813,853
30
4020
67.0
0.230
1813,853
0,024
42.815
1771.038
30
4050
67.5
0.224.
1771.038
0,023
42.313
1728.725
30
4080
68.0
0.219
1728.725
0.023
41.810
1686.915
30
411'0
68.5
0.214
1686.915
0.023
41.308
1645,607
30
4140
69.0
0.208 -
1645.607
0.022
40.805
1604.801
30
4170
69.5
0.203
1604.801
0.022
40.303
1564.499
30
4200
70.0
0.198
1564.499
0.022
39.800
1524.699
30
4230
70.5
0.193.
1524.699
0.022
39.297
1485.402
30
4260
71.0
0.188'
1485.402
0.021
38.794
1446.608
30
4290
71.5
0.183
1446.608
0.021
38.291
1408.317
30
4320
72.0
0.178:
1408.317
0.021
37.787
1370.530
30
4350
72.5
0.173"
1370.530
0.020
37.284
1333.246
30
4380
73.0
0.169 '
1333.246
0.020
36.780
1296.466
30
4410
73.5
0.164
1296.466
0.020
36.277
1260.189
30
4440
74.0
0.160
1260.189
0.020
35.773
1224.417
30
4470
74.5
0.155
1224.417
0.019
35.269
1189.148
30
4500
75.0
0.151
1189.148
0.019
34.764
1154.384
30
4530
75.5
0.146
1154.384
0,019
34.260
1120.124
30
4560
76.0
0.142 ,
1120.124
0.018
33.756
1086.368
30
4590 -
76.5
0.138'
1086.368
0.018
33.251
1053.117
30
4620
77.0
0.133 ,.
1053.117
0.018
32,746
1020,371
30
4650
77.5
0.129
1020.371
0.018
32.241
988.130
30
4680
78.0
0.125 '_
988.130
0.017
31.736
956.394
30
4710
78.5
0.121
956.394
0.017
31.230
925.164
30
4740
79.0
0.117
925.164
0,017
30.725
894.439
30
4770
79.5
0.113 , :
894.439
0.017
30.219
864.220
30
4800
80.0
0.109
864.220
0.016
29.713
834.507
30
4830
80.5
0.106 ; ,
834.507
0.016
29.207
805.300
30
4860
81.0
0.102
805.300
0.016
28.700
776.600
30
4890
81.5
0.098
776.600
0.015
28.194
748.406
30
4920
82.0
0.095
748.406
0.015
27.687
720.720
30
4950
82.5
0,091
720.720
0.015
27.179
693.540
30
4980
83.0
0.088
693.540
0.015
26,672
666.869
30
5010
83.5
0.084
666.869
0.014
26.164
640.704
30
5040
84.0
0.081
640.704
0.014
25.656
615.048
30
5070
84.5
0.078.'
615,048
0.014
25,148
589.900
30
5100
85.0
0,075
589.900
0.013
24.639
565.261
30
5130
85.5
0.072
565.261
0.013
24.130
541.131
30
5160
86.0
0,068
541.131
0.013
23.621
517.510
30
5190
86.5
0.066'
517.510
0.013
23.111
494.399
30
5220
87.0
0.063':.
494,399
0.012
22.601
471.798
30
5250
87.5
0.060
471.798
0.012
22.091
449.707
30
5280
88.0
0.057.
449.707
0.012
21.580
428.127
30
5310
88.5
0.054
428.127
0.011
21.069
407.059
30
5340
89.0
0.052
407,059
0.011
20.557
386.502
30
5370
89.5
0.049..,
386.502
0.011
20.045
366,457
30
5400
90.0
0.046
366.457
0.011
19.532
346.925
30
5430
90.5
0.044
346.925
0.010
19.019
327.907
30
5460
91.0
0.042-.
327.907
0.010
18.505
309.402
30
5490
91.5
0.039
309.402
0.010
17.991
291.411
30
5520
92.0
0.037.
291.411
0.009
17.476
273.935
30
5550
92.5
0.035 '
273,935
0.009
16.960
256.975
30
5580
93.0
0.033
256.975
0.009
16.444
240.532
30
5610
93.5
0.030
240.532
0.009
15.926
224.606
30
5640
94.0
0.028
224.606
0.008
15.408
209.197
30
5670
94.5
0,026
209.197
0.008
14.890
194,308
30
5700
95.0
0.025
194.308
0.008
14.370
179.938
30
5730
95.5
0.023- .- ,
179.938
0.007
13.849
166.089
30
5760
96.0
0.021 '
166.089
0.007
13,327
152.762
30
5790
96.5
0.019 :
152.762
0.007
12.804
139.958
30
5820
97.0
0.018.
139.958
0.007
12.279
127.679
30
5850
97.5
0.016
127,679
0.006
11.754
115.925
30
5880
98.0
0.015
115,925
0,006
11.226
104.699
30
5910
98.5
0.013::
104.699
0.006
10.697
94,002
30
5940
99.0
0.012
94.002
0.005
10.166
83.836
30
5970
99.5
0.011...
83.836
0.005
9.633
74.204
30
6000
100.0
0.009'.
74.204
0.005
9.097
65.107
30
6030
100.5
0.008
65.107
0.004
8.558
56.549
30
6060
101.0
0.007.
56.549
0.004
8.016
48.532
30
6090
101.5
0.006
48.532
0.004
7.471
41,061
30
6120
102.0
0.005: .
41.061
0.004
6.921
34.140
30
6150
102.5
0.004"' ,
34,140
0.003
6.366
27.774
30
6180
103.0
0.004
27.774
0.003
5.805
21.969
30
6210
103.5
0.003'•, '
21.969
0.003
5.236
16.733
30
6240
104.0
0.002-
16.733
0.002
4.657
12.076
30
6270
104.5
0.002
12,076
0.002
4.064
8,012
30
6300
105.0
0.001
8.012
0.002
3.453
4.560
30
6330
105.5
0.001'
4.560
0.001
2.812
1.747
30
6360
106.0
0.000 -
1.747
0,001
2.121
-0.374
fI .O t2
85% TSSIREMOVAL
30 TOOT VEGETATED .FILTER REQ=, D
DEPTH
3'
3:5'
4.0.
4.5'
5.0'
5.5'
6.0'
6.5'
7.0'
7.5'
IMP %
10%
.9
.8
.7
.6'
.-.5
0
0
0
0
0
20%
1.7
1.3
1.2
1.1
'1.0
.9
.8•
.7
.6
.5
30%
2.5.
2.2
1..9
1.8
1.6
1.5
1.3
1.2
1.0
.9
40 %
3.4
3.0
2.6
2.4
2.1
1.9
1.6
1.4
L 1
1.0
50 %
4.2
3.7
3.3
3.0
2.7
1 2.4
2.1
1.8
1.5
1.3
60 %
5.0
4.5
3.8
3.5
-3.2
2.9
2.6
2.3
2.0
1.6
70 %
6.0
5.2
4.5
4.1
3.7
3.1
2.9
2.5
2.1
1.9
80 %
6.8
6.0
5.2
4.7
4.2
3.7
3.2
2.7
2.2
2.0
90 %
7.5
6.5
5.8
5.3
4.8
4.3
3.8
3.3
2.8
1.3
100 %
8.2
7.4
6.8
6.2
5.6
5.0
4.4
3.8
3.2
2.6
90% TSS REMOVAL
NO VEGETATED FMTER REQUIRED
DEPTH
3'
3.5'
4.0'
4.5'
5.0'
5.5'
6.0'
6.5'
7.0'
7.5'
IMP %
10%
1.3
1'.0
.8
.7
.6
.5
.4
.3
.2
.1
205/a
2.4
2.0
L8
1.7
1'.5
1.4
1.2
1.0
.9
.6
30 %
3.5
3.0
2.7
2.5
2.2
1.9
1.6
1.3
1.1
.8
40 %
4.5
4.0
3.5
3.1
2.8
2.5
2.1
1.8
1.4
1.1
50 %
5.6
5.0
4.3
3.9
3-.5
3.1
2.7
2.3
1.9
1.5
60 %
.7. 05 .
6.0
5.3
4.8
:.4- 3
3.9
3.4
2.9
2.4
1.9
.70%
..8.1
7.0
6.0
5.5
5.0
4.5
3.9
3.4
2.9
2.3
80 %
9.4
8.0
7.0
6.4
5.7
5.2
4.6
4.0
3.4
2..8
901,110,
10.7
9.0
7.9
7.2
6.5
5.9
5.2
4.6
3.9
3.3
100 %
12.0
10.0
8.8
8.1
7.3
-6.6-
5.8
5.1
4.3
3.6
gal
f 2 0E- 12
I� i e o
-4 10, 000
y...� lee epoo EXAMPLE (f } (2) (3) '
156 ti 000 D = •42 Inches (3:5feet) 6
�r Q 2 12'0 cfs 6
�+ •144 5,000. �.
O « 4, Od0 }HW HW 6 5
}Z. 132 D feot _
120 {2)' 2.1 7.4
108 2,000 (3) 2.2 7.7 4 3
_ D in feet 3
96 3.
l,000 � .
800
84 r
t-�
600
�...i n 500,,
l p 72 400 Q 2
m
n K a 300
2:D �� a
• m /ri m
r ITS 0 54
48
so
ZC "� � N GO ; D 1.a
s o 1' ° Cn
p 40SCALE .0 ENTRANCE I.0
1� OITI.-� W D.::.r: o TYPE 9 0
r O 36 .30• (n .4 j
Q59 Square �Ve.UJR+ z 9 CT
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03
HEADAriATER SCALES 2a3
i BUREAU OF PUBLIC ROADS—JAN. 19.63 REVISED MAY 1964
Narrative
Erosion and Sedimentation Control Plan
Stormwater Management Plan
Camellia Court Apartments
June f2., 1997
Owner: East Carolina C.D.I.
400 Front Street, Suite 14
Beaufort, North Carolina 28516
(919) 504-3996
Engineer: Stroud Engineering, P.A.
151 A Hwy. 24
Morehead City, North Carolina 28557
(919). 247-7479
A. Description of Project
1. Type of Development
Camellia Court Apartments is a proposed mulit-family apartment
complex containing eleven four-tinit buildings and a community building on
4.55 acres to be developed in accordance with approved plans and
specifications for the installation'. of utilities and construction of streets, a pond,
and drainage improvements.
2. Earth Disturbing Activities
a. Clearing and grubbing of trecs located within the proposed street right-
of-way, pond area, drainage and utility casements.
b. Excavation and grading for the installation of roads, detention pond,
drainage, and utility improvements.
3. Drainage
The site presently drains to the cast primarily by sheet runoff into the
low areas in the center of the property.
File:Narra(A.txt
B. Erosion and Sedimentation Control Measures
Due to the substantial sand content at this site, proper attention shall be
required for erosion and sedimentation control measures. Various levels of control are
proposed on the plan. If it becomes evident that additional erosion and sedimentation
control measures are needed, they shall ' be installed immediately. It is intended that
all grading and excavation activities within a certain area will be protected as soon as
that activity is complete, i.e., drainage swales, utility easements, etc.
i . Silt Felice - Silt fence will be utilized as necessary in locations as shown on
plans or as deemed necessary by the engineer to insure that off -site
sedimentation in controlled.
2. Silt Basins and/or Check Dams - Silt basins and/or check dams shall be
installed at locations shown to allow suspended solids time to settle out.
3. Seeding - All disturbed areas will be seeded within 30 days following
construction in accordance with the seeding schedule shown on plans.
C. Time Sequence of Operations
I. Clear and grub right-of-ways, drainage, and utility easements.
2. Install stone construction entrance.
3. Rough grade street system, detention pond, and outlet ditch and rip rap.
4. Install utilities. .
5. Fine grade and pave streets.
6. Seed and mulch all disturbed areas.
D. Design Assumptions
I. Design storm is ten years.
2. The rational method was used for design. Composite Runoff Coefficient=0.50.
E. Coastal Stormwater Regulations .
The North Carolina Division of Environmental Management implemented coastal
stormwater regulations in coastal counties on January 1, 1999. these regulations are detailed
in 15 NCAC 2H.1000 Stormwater Runoff Disposal. These rules allow for a development to
consider density options as a passive means to reduce water quality impacts. This project is
submitted for approval consideration under Section .1003(d)(2).
Ronald D. Cullipher, P.E. Date
Pile Narrati4xxt
joB ; Al✓I LL l
STROUD ENGINEERING, P.A.
151 A Hwy. 24 SHE ET NO. of
MOREHEAD CITY, NC 28557 CALCULATED BY __lam �- DATE
(91.9) 247-7479 � C}
CHECKED BY _ DATE
SCALE