20100749 Ver 1_Stormwater Info_20100909

STORMWATER MANAGEMENT
PLAN
0905-M
MILANO AVENUE
5TORMWATER CALCULATIONS
APEX, NORTH CAROLINA
ISSUED: 7/1 G/2010 PREPARED BY:
REVISED: 8/3/2010 JONES E CN055EN ENGINEERING, PLLC
221 N. 5ALEM 5T., SUITE 200, P.O. BOX I OG2
APEX, NC 27502
919-387-1 174 (PHONE)
919-387-3375 (PAX)
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Table of Contents
fave
Background 2
Pre-Development Runoff Calculation5 3
Post-Development Runoff Calculations 3-4
5torm Drainage Calculation5 5
Pond Calculations 6
Bio-Retention Pond Calculation5 7-8
5tormwater Pond Routing - I Year 5torm 9-10
Stormwater Pond Routing - 10 Year 5torm 11-12
5tormwater Pond Routing - 100 Year Storm 13-14
Bio-Retention Pond Routmg - I Year Storm 15-16
Bio-Retention Pond Routing - 10 Year Storm 17-18
Bio-Retention Pond Routing - 100 Year Storm 19-20
Background
This project includes the extention of Milano Avenue which is a mayor residential street that will be
designed to Town of Apex Standards and Specifications. The location of the roadway alignment is
mostly wooded and has varying slope which includes an existing creek. This project is located in the
beaver Creek Basin (Cape Fear River Drainage Basin).
A
Pre-Development Runoff Calculations
Ex15t1ng Site 15 mostly wooded areas with a natural slopes less than
7%. A C value of 0. 15 15 appropriate.
From NOAA Atlas 14:
11 = 4.73 in/hr
110 = 7.04 1n/hr
I= = 8.71 in/hr
Drainage Area = 1 1.59 acres
C = 0.15
The calculated Pre-Development flows are:
a, = 8.2 cf5
Q 10 = 12.2 cf5
Q 100 = 1 5.1 cf5
Pont-Development Runoff Calculations
i . Calculate post-development 'C-value'
De5cri ion Area
Area in Asphalt and Concrete I.G3 0.95
Re51dentlal Rooftops 1.29 1.00
Lawns, heavy 5011, average 2.86 0.20
Lawns, heavy 5011, steep 2.8G 0.30
Wooded Areas 2.95 0.15
TOTAL DRAINAGE AREA 1 1.59 acres
Compo5lte 'C-value' = 0.41
The calculated Post-Development flows are:
Drainage Area = 1 1.59 acres
C = 0.41
Q, = 22.3 cf5
Q,0 = 33.2 cf5
Q 100 = 41 .0 cf5
Flow to be retained on site
Q, = 14.1 cf5
Q 10 = 21.0 cf5

The flow from the site will be directed as follows:
Discharcge to Wet Pond = 6.90 ac
Discharge to Boo-Retention = 0.7 ac
Discharge to go Untreated = 3.99 ac
5ee Storm Drainage Table for c-values
Calculate post-development ! year runoff with stormwater devices
Descr ion a (cfs)
Pond Inflow - Wet Pond 16.6 (6.90 ac)(0.51)(4.73 in/hr)
Pond Inflow - Bro-Retention 2.5 (0.7 ac)(0.75)(4.73 in/hr)
Pond Outflow - Total 0.2
Untreated Direct Run-Off 5.7 (3.99 ac)(0.30)(4.73 in/hr)
TOTAL 5.9 cfs
The calculated post-development runoff for the I -year storm (5.9 cfs) +s less than the calculated
pre-development runoff for the I -year storm 08.2 cfs).
Calculate post-development / 0-year runoff with stormwater deuces
Pond Inflow - Wet Pond 24.8 (6.90 ac)(0.51)(7.04 in/hr)
Pond Inflow - Bio-Retention 3.7 (0.7 ac)(0.75)(7.04 in/hr)
Pond Outflow - Total 0.3
Untreated Direct Run-Off 8.4 (3.99 ac)(0.30)(7.04 in/hr)
TOTAL 8.7 cfs
The calculated post-development runoff for the I 0-year storm (8.7 cfs) is less than the calculated
pre-development runoff for the I 0-year storm (12.2 cfs).
Calculate post-development l 00-year runoff with stormwater devices
Pond Inflow - Wet Pond 30.7 (4.90 ac)(0.61)(8.71 in/hr)
Pond Inflow - Bio-RetentionOffsit 4.6 (4.29 ac)(0.40)(8.7 I m/hr)
Pond Outflow - Total 1.7
Untreated Direct Run-Off 10.4 (3.99 ac)(0.30)(8.71 in/hr)
TOTAL 12.1 cfs
The calculated post-development runoff for the 100-year storm (12.1 cfs) is less than the calculated
pre-development runoff for the 100-year storm (15. 1 cfs).

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Stormwater Pond Run off Calculations

Rainfall Intensities for I -yr, I 0-yr and 100-yr storm events
1, = 4.73 in/hr
110 = 7.04 in/hr
1100 = 8.71 Whr
The calculated flow from CB #7 is 5.1 ac. and the additional runoff to the pond is 1.5 ac.
Total Drainage Area = 6.9 acres
C = 0.51 (See Storm Drainage Table).
Q, = 16.6 cfs
Q,o = 24.8 cfs
Q100 = 30.7 cfs
Using the BMP Manual, the minimum surface area is calculated as:
Impervious Percentage = 36%
Streets 56,628 sf
5idewalk 17,424 sf
Lots 34,848 sf
Total Impervious = 108,900 sf (2.5 ac)
so % Impervious = 2.5 ac/6.9 ac =36%
Permanent Pool Depth = 4.0' but the avg. pool depth per the BMP manual is calculated as:
dw = [0.25 x (I + 17,200 5f/ 10,600 sf) + [(7,200 sf + 3,500 5f)/2] x [3.5 ft17,200 A
Using Table 10-3 to achieve 90% TSS Removal, the 5A/DA ratio for 36% at 3.0'15 2.2
Minimum SA = (2.2/1 00)*6.9=0. 152 acres = 6,612 sf
The designed SA is 1 5, 100 sf. Therefore, the stormwater pond SA is OK.
Kv = (0.05)+(0.009'36) = 0.37 in/in
Volume to control = 3630`(1 mch)'(0.37 inhn)(6.9 ac) = 9,267 cf
By the spreadsheet calculation, the volume stored in the pond at 0.60' is 9,300 cf
Drawdown for 2" orifice = (0.026)(2') ^ 2(5art((0.6-0)/2)))
Qo = 0.0288 cfs
Drawdown = 9267cf/0.0288 cfs = 3.7 days Qr
Z
1. Drainage area to braretention area = 0.7 AC
2. Calculate volume from I 'storm using the Simple Method for total build-out
Rv = 0.05+0.9(IA) where IA =75%
Rv = 0.73
Calculated Volume = (3,630)(Rv)(RD)(A)
Volume = (3,630)(I ')(0.73(0.7Ac)
Volume = 1,555 cf
4. Calculate minimum required surface area
Assumed depth of storage area = I'
5A = V / depth
5A = 1,555 sf
5. Determine depth of BMP and if underdrams will be required
Given that we intend to sod the bio-retention device, a depth of 2.0' was selected.
Per the recommendations of Specifications from the North Carolina BMP Manual, the following soil mix
will be used in this device:
65 - 88% Sand
8 - 12% Fines
3 - 5% Organic
Underdram5 will be used to assist in conveying the water from the filtered sod to the provided riser
structure.
6. Calculate water draw through rate
K = 1 .0 iNhr
A = 1,855 sf
H = 4.0'
L = 3.0'
Q=(2.3e5)-K-A`H/L
Q = 0.06 cfs
7. Calculate time to remove 1,855 cf @ flowrate Q
TI-5 = V,_5 / Q
T1_5 = 9.0 hrs.
8. Calculate time to drawdown water from saturation to 2 ft below surface
Assign Poros+ty - 45% (n = 0.45)
V-?-4 _ (2ft) - (5A) - 0.45
V5.4 = I , 669 cf
7
T5-2 = V5_2 / Q
T5.2 = 8 hrs.
9. Total time to draw water through sod
Time = TS., + T_12
Time = 17 hrs.
/ O. Calculate underdrain pipe capacity
N'D= 16'(Q'n/5 0.5)-/8
N'D=6.3in
Therefore, use two (2) 4" corrugated plastic pipes at 0.5% will work
l 1. Determine the depth of the gravel envelope surrounding the drainage pipe
5mce the underdrams are 4" diameter, the depth of the gravel envelope shall be a minimum of G"
deep (4" pipe diameter + 2" cover).
g
0586 Pond Routing
0908-M 7/14/2010
Milano Avenue - Pond Routing 1-Year Storm

Peak Flow = 16.6 Drawdown Orifice = 2"
Time to Peak = 5 Riser Size = 2'x2'

Time (min) Inflow (cfs) Storage (cf) Stage (ft) Outflow (cfs
0 0.0 0 0 0
0
0.5 0.4 0 0.00 0.0
12
1 1.6 12 0.00 0.0
47
1.5 3.5 59 0.00 0.0
104
2 5.8 164 0.01 0.0
174
2.5 8.3 338 0.02 0.0
249
3 10.8 586 0.04 0.0
323
3.5 13.1 909 0.06 0.0
393
4 14.9 1302 0.09 0.0
447
4.5 16.3 1749 0.12 0.0
487
5 16.6 2236 0.15 0.0
497
5.5 16.3 2733 0.18 0.0
_ 487
6 14.9 3219 0.21 0.0
- - ----- -- 447
6.5 14.1 3666 0.24 0.1
422

7
12.3
4088
0.27 _
0.1
367
7.5 10.6 4455 0.30 0.1
317
8 9.1 4772 0.32 0.1
272
8.5 8.0 5044 0.33 0.1
237
9 7.0 5281 0.35 0.1
207
9.5 6.0 5488 0.36 0.1
177
10 5.1 5666 0.38 0.1
152
10.5 4.5 5818 0.39 0.1
133
1
0586 Pond Routing
11 4.0 5951 0.39 0.1
118
11.5 3.3 6068 0.40 0.1
98
12 3.0 6166 0.41 0.1
88
12.5 2.5 6254 0.41 0.1
73
13 2.2 6326 0.42 0.1
63
13.5 1.8 6389 0.42 0.1
53
14 1.5 6442 0.43 0.1
43
14.5 1.2 6484 0.43 0.1
33
15 0.8 6517 0.43.. 0.1
23
15.5 0.5 6540 0.43 0.1
10
0586 Pond Routing
0908-M 7/14/2010,
?Ailano Avenue - Pond Routing -10-Year Storm

Peak Flow = 24.8 Drawdown Orifice = 2"
Time to Peak = 5 Riser Size = 2'x2'

Time (min) Inflow cfs) Storage (cf) Stage (ft) Outflow (cfs)
0 0.0 0 0 0
0
0.5 0.6 0 0.00 0.0
18
1 2.4 18 0.00 0.0
71
1.5 5.2 88 0.01 0.0
156
2 8.7 244 0.02 0.0
260
2.5 12.4 504 0.03 0.0
371
3 16.1 876 0.06 0.0
483
3.5 19.6 1359 0.09 0.0
587
4 22.3 1945 0.13 0.0
668
4.5 24.3 2614 0.17 0.0
728
5 24.8 3342 0.22 0.0
743
5.5 24.3 4084 0.27 0.1
727
6 22.3 4812 0.32 0.1
668
6.5 21.1 5480 0.36 0.1
630

7
18.4
6110
0.40 _
0.1
549
7.5 15.9 6659 0.44 - - 0.1
474
8 13.6 7133 6.47 0.1
-407
8.5 11.9 7540 0.50 0.1

--- 355
9
? 10.4 7895 0.52 0.1
310
9.5 8.9 8205 0.54 0.1
266
10 7.7 8470 0.56 0.1
228
10.5 T - 8699 0.57 0.1
198
0586 Pond Routing
11 6.0 8897 0.59 0.1
176
11.5 5.0 9073 0.60 0.1
146
12 4.5 9220 0.61 0.1
131
12.5 3.7 9351 0.62 0.1
109
13 3.2 9460 0.62 0.1
93
13.5 2.7 9553 0.63 0.2
77
14 2.2 9630 0.64 0.2
62
14.5 1.7 9692 0.64 0.2
46
15 1.2 9737 0.64 0.2
.30
15.5 0.7 9768 0.64 0.2
0
16 0.5 9768 0.64 0.2

_i

14
0586 Pond Routing
0908-M 7/14/2010
Mllanc, Avenue - Pond Routing - 100-Yea r Storm
!
Peak Flow = 30.7 Riser Size = 21x2'
Time to Peak = 5 Em. Spillway 5' Width

Time (min) inflow (cfs) Storage (cf) Stage (ft) Outflow (cfs)
0 0.0 0 0 0
0
0.5 0.7 0 0.00 0.0
22
1 2.9 22 0.00 0.0
87
1.5 6.4 109 0.01 0.0
193
2 10.7 303 0.02 0.0
322
2.5 15.4 625 0.04 0.0
460
3 20.0 1084 0.07 0.0
598
3.5 24.3 1682 0.11 0.0
727
4 27.6 2409 0.16 0.0
828
4.5 30.1 3236 0.22 0.0
901
5 30.7 4137 0.27 0.1
919
5.5 30.1 5057 0.34 0.1
901
_
6 27.6 5958 0.39 0.1

6.5
--
26.1 827
6784
0.45
0.1
.
781
7 22.7 7565 0.50 0.1
679
7.5 19.6 8245 0.55 0.1
587
8 16.9 8832 0.58 .0.1
504
8.5 14.7 9336 0.62 0.1
439
9 12.9 9775 0.65 0.2
380
9.5 11.1 10155 0.67 0.4
318
10 9.5 10473 0.69 0.6
266
10.5 8.3 10739 0.71 0.8
224
ie;?
0586 Pond Routing
11 7.4 10963 0.72 1.0
191
11.5 6.1 11155 0.73 1.1
150
12 5.5 11304 0.74 1.3
128
12.5 4.6 11432 0.75 1.4
97
13 4.0 11529 0.76 1.5
76
13.5 3.4 11604 0.76 1.5
55
14 2.8 11659 0.77 1.6
35
14.5 2.1 11694 0.77 1.6
16
15 1.5 11710 0.77 1.6
-3
15.5 0.9 .11707 0.77 1.6

14
0908-M 7/14/2010
MILANO AVENUE
Bio-Retention Area #1 1 - Yr Storm
Peak Flow = 2.5 Infiltration Rate 0.1
Time to Peak = 5 Riser 2'x 2'

Time (min) Inflow cfs Storage (cf) Stage (ft) Outflow (cfs)
0 0.0 0 0 0.00
0
0.5 0.1 0 0.00 0.10
0
1 0.2 0 0.00 0.10
4
1.5 0.5 4 0.00 0.10
13
2 0.9 17 0.01 0.10
23
2.5 1.3 40 0.02 0.10
35
3 1.6 75 0.04 0.10
46
3.5 2.0 120 0.06 0.10
56
4 2.3 177 0.10 0.10
65
4.5 2.5 241 0.13 0.10
71
5 2.5 312 0.17 0.10
72
'5.5 2.5 384 0.21 0.10
71
6 2.3 454 0.24 0.10
65
6.5 2.1 519 0.28 0.10
61
7 1.9 579
53 0.31 0.10
7.5 1.6 632 0.34 0.10
45
8 1.4 677 0.36 0.10
38
8.5 1.2 715 0.39 0.10
33
9 1.1 748 0.40 0.10
29
9.5 0.9 777 0.42 0.10
24
10 0.8 801 0.43 0.10
20
10.5 0.7 821 0.44 0.10
17
1y
11 0.6 838 0.45 0.10
15
11.5 0.5 853 0.46 0.10
12
12 0.5 865 0.47 0.10
11
12.5 0.4 876 0.47 0.10
8
13 0.3 884 0.48 0.10
7
13.5 0.3 891 0.48 0.10
5
14 0.2 896 0.48 0.10
4
14.5 0.2 900 0.48 0.10
2
15 0.2 902 0.49 0.10
2
15.5 0.1 903 0.49 0.10
1
16 0.1 904 0.49 0.10

16.5 0.1 904 0.49 0.10
-- -1
17 0.1 903 0.49 0.10
-2

17.5
0.0 _
902
0.49
0.10
k4
0908-M 7/14/2010
MILANO AVENUE
Bio-Retention Area #1 10 - Yr Storm
Peak Flow = 3.7 Infiltration Rate 0.1
Time to Peak = 5 ! Riser 2'x 2'

Time (min) Inflow (cfs) Storage (cf) Stage (ft) Outflow (cfs)
0 0.0 0 0 0.00
0
0.5 0.1 0 0.00 0.10
0
1 0.4 0 0.00 0.10
8
1.5 0.8 8 0.00 0.10
20
2 1.3 28 0.02 0.10
36
2.5 1.9 64 0.03 0.10
53
3 2.4 116 0.06 0.10
69
3.5 2.9 185 0.10 0.10
85
4 3.3 270 0.15 0.10
97
4.5 3.6 367 0.20 0.10
106
5 3.7 473 0.25 0.10
108
5.5 3.6 581 0.31 0.10
106
6 3.3 687 0.37 0.10
-
6.5
3.1 97
783
91
0.42
0.10
7 2.7 875 0.47 0.10
79
7.5 2.4 954 0.51 0.10
68
8 2.0 1022 0.55 0.10
58
8.5 1.8 1080 0.58 0.10
50
9 1.6 1130 0.61 0.10
44
9.5 1.3 1174 0.63 0.10
37
10 1.1 1211 0.65 0.10
31
10.5 1.0 1242 0.67 0.10
27
'?
11 ' 0.9 1269 0.68 0.10
24
11.5 0.7 1293 0.70 0.10
19
12 0.7 1312 0.71 0.10
17
12.5 0.6 1329 0.72 0.10
14
13 0.5 1343 0.72 0.10
11
13.5 0.4 1354 0.73 0.10
9
14 0.3 1363 0.73 0.10
7
14.5 0.3 1370 0.74 0.10
5
15 0.2 1375 0.74 0.10
4
15.5 0.2 1379 0.74 0.10
3
16 0.1 1381 0.74 0.10
1
16.5 0.1 1383 0.75 0.10
0
17 0.1 1383 0.75 0.10
A
17.5 0.0 1382 0.75 0.10

0908-M 7/14/2010
MILANO AVENUE
Bio-Retention Area #1 100 - Yr Storm
Peak Flow = 4.6 Infiltration Rate 0.1
Time to Peak = 5 Riser 2'x 2'

Time (min) Inflow (cfs Storage ct) Stage (ft) Outflow (cfs
0 0.0 0 0 0.00
0
0.5 0.1 0 0.00 0.10
0
1 0.4 0 0.00 0.10
10
1.5 1.0 10 0.01 0.10
26
2 1.6 36 0.02 0.10
45
2.5 2.3 81 0.04 0.10
66
3 3.0 147 0.08 0.10
87
3.5 3.6 234 0.13 0.10
106
4 4.1 340 0.18 0.10
121
4.5 4.5 461 0.25 0.10
132
5 4.6 594 0.32 0.10
135
5.5 4.5 729 0.39 0.10
132
6 4.1 861 0.46 0.10
121
6.5 3.9 982 0.53 0.10
114
7 3.4 1096 0.59. 0.10
99
7.5 2.9 1195 0.64 0.10
85
8 2.5 1281 0.69 0.10
73
8.5 2.2 1354 0.73 0.10
63
9 1.9 1417 0.76 ! 0.10
55
9.5 1.7 1472 0.79 0.10
47
10 1.4 1519 0.82 0.10
40
10.5 1.2 1558 0.84 0.10
34
?1
11 1.1 1593 0.86 0.10
30
11.5 0.9 1623 0.87 0.10
_ 25
12 0.8 1647 0.89 0.10
22
12.5 0.7 1669 0.90 0.10
18
13 0.6 1687 0.91 0.10
15
13.5 0.5 1702 0.92 0.10
12
14 0.4 1714 0.92 0.10
9
14.5 0.3 1723 0.93 0.10 .
7
15 0.3 1730 0.93 0.10
5
15.5 0.2 1735 0.94 0.10
4
16 0.2 1739 0.94 0.10
3
16.5 0.1 1742 0.94 0.10
1
17 0.1 1743 0.94 0.10
0
17.5 0.0 1743 0.94 0.10
p
Permit No.
(to be provided by DWQ)
ATA
NCDENe
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
WET DETENTION BASIN SUPPLEMENT
This form must be filled out p4ted and subrm7ted.
The Required Items ChedM (Pad 110 must be parted, filled out and submitted afav *0 an of the requared iribmahan.
Protect name
Contact person
Phone number
Date
Drainage area number
Stie Characteristics
Drainage area
impervious area, posWevelopment
% impervious
Design rainfall depth
Storage Volume: Non-SA Waters
Minimum volume required
Volume provided
Storage Volume: SA Waters
1.5" rurroff volume
Pre-development 1-yr, 24-hr runoff
Post-development 1-yr, 24-hr runoff
Minimum volume required
Volume provided
Peak Flow Calculations
Is the pm/post control of the 1 yr 24hr storm peak flow required?
1-yr, 24-hr rainfall depth
Rational C, pre-development
Rational C, post-development
Rainfall intensity: l yr, 24-hr storm
Pre-development 1-yr, 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Pre/Post 1-yr, 24-hr peak flaw control
Elevations
Temporary pool elevation
Permanent pod elevation
SHWT elevation (approx. at the perm. pool elevation)
Top of 1 Oft vegetated shelf elevation
Bottom of 1 Oft vegetated shelf elevation
Sediment deanout, top elevation (bottom of pond)
Sediment deanout, bottom elevation
Sediment storage provided
Is there additional volume stored above the state-required temp. pool?
Elevation of the top of the additional volume

36.23%
e, 1.0 in
OF yd ATF,Q
'S y
p -t
,"9A50'ft9 OK
x s '
8 5DD 3
OK, volume provided is equal to or In excess of volume required.
$I tt3
fe
fe
ff3
ft
y . (Y or N)
:zZ9 in
x 0+15 (unitiess)
3 'b 0,51 (unitless)
;4.73 inlhr OK
4.90 felsec
16.60 its/sec
11.70 f0lsec
274.60: fmsl
274,oQr foal
265.00 lost
274:50 fmsl
273.50 fmsl
- 270.00 final
266:00:lind
1.00 It
n (Y or N)
274.6 final OK
Form SW401-Wet Detention Basin-Rev.Ml7/09 Parts I.8 II. Design Summary. Page 1 of 2
Permit No.
(to be provided by DK10)
Surface Areas
Area, temporary pool 15;6QQ; fe
Area REQUIRED, permanent pool 6,612 f
SAIDA ratio -2.20 (unless)
Area PROVIDED, permanent pod, Ap, ,y,d >. 151164 fe OK
Area, bottom of 10ft vegetated shelf, Ab,L ? „ 1,422 fe
Area, sediment deanout, top elevation (botbrn of pond), Abm r } ' b,191 fl
Volumes
Volume, temporary pod 9400; fe OK
N &3
v T?F 45,552.
Volume, permanent pod, VpN11,
_pw
Volume, tuba (sum of forebays If more than one forebay) ft
Forebay % of permanent pod volume 18.6%% OK
SAIDA Table Data
Design TSS removal _ 290; %
Coastal SAIDA Table Used? fJ r (Y or N)
MourdaiNPiedmont SAIDA Table Used? n (Y or N)
SAIDA ratio 220 (unltless)
Average depth (used in SAIDA table):

Calculation option 1 used? (See Figure 1(2b) ` s
M;3 f+' ;y? (Y or N)
Volume, permanent pool, V,, ,w 45,552 fr
Area provided, permanent pod, Ap,,,,,y„i 15,164 if
Average depth calculated 1'' Wft OK
Average depth used in SAIDA, dd, (Round to nearest 0.511) ft OK
Calculation option 2 used? (See Fours 10-2b) Y ; ; (Y or N)
Area provided, permanent pod, Ap,,,_„ i 15,184 if
Area, bottom of 1Dft vegetated shelf, Ab,L,, 11,422 le
Area, sediment cleanout, top elevation (bottom of pond), Aw_,,d 5,191 fe
'Depth' (distance blw bottom of 10ft shelf and top of sediment) 3.50 it
Average depth calculated "- '1100- It OK
Average depth used in SAIDA, d.,, (Round to nearest 0.511) ft OK
Drawdown Calculations
Drawdown through orifice?
Diameter of orifice ('d circular)
Area of orifice (11-non-circular)
Coefficient of discharge (Co)
Driving head (H,)
Drawdown through weir?
Weir type
Coefficient of discharge (Cw)
Length of weir (L)
Driving head (H)
Pre-development 1-yr. 24-hr peak flow
Post-development 1-yr, 24-hr peak flow
Storage volume discharge rate (through discharge orifice or weir)
Storage volume drawdown time
Additional Inforrrlation
Vegetated side slopes
Vegetated shelf slope
Vegetated shelf width
Length of flowpath to width ratio
Length to width ratio
Trash rack for overflow & orifice?
Freeboard provided
Vegetated fitter provided?
Recorded drainage easement provided?
Capures all runoff at ultimate build-out?
Drain mechanism for maintenance or emergencies is:
yx (Y or N)
U0 in
in2
0.A0, (unitless)
-0;27 it
:A;a> (Y or N)
s`r'g,Pys` ()
t?
z ?; ? ?'Y ft
4.N' ft3lsec
)6 0 elsec
0.113, f6sec
F 3 70 days
OK, draws down in 2a days.
3.:1 OK
1D:1 :1 OK
10:0..11 OK
ra;; 331:1 OK
-".3:0;:1 OK
y (Y or N) OK
2:2 it OK
n' . ' (Y or N) OK
y (YorN) OK
y (Y or N) OK
fi' pipewithdrawdown valve
Forth SW401•Wet Delenaon Basin4tev.8-9/17!09 Paris 1. & II. Design Summary, Page 2 or 2
Permit No.
(to be provided by DING)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project. Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justffication.
Pagel Plan
Initials Sheet No.
pdc C+ 1. Plans (1" - 50' or larger) of the entire site showing:
- Design at ultimate build-out,
- Oft site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Basin dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROW),
- Overflow device, and
- Boundaries of drainage easement.
pdc C-6 2. Partial Man (1" = 30' or larger) and details for the wet detention basin showing:
- Outlet structure with trash rack or similar,
- Maintenance access,
- Permanent pool dimensions,
- Forebay and main pond with hardened emergency spillway,
- Basin cross-section,
- Vegetation specification for planting shelf, and
- Fitter strip.
pdc C-6 3. Section view of the wet detention basin 0" = 20' or larger) showing:
- Side slopes, 3:1 or lower,
- Pretreatment and treatment areas, and
- Inlet and outlet structures.
pdc G7 4. If the basin is used for sediment and erosion control during construction, clean out of the basin is specified
on the plans prior to use as a wet detention basin.
pdc C-6 5. A table of elevations, areas, incremental volumes & accumulated volumes for overall pond and for forebay,
to verify volume provided.
pdc C-7 6. A construction sequence that shows how the wet detention basin will be protected from sediment until the
entire drainage area is stabilized.
pdc Attached 7. The supporting calculations.
do

p dc
4,W4 "
W
,j j. f
Tj??,6

. A copy of the signed and notarized operation and maintenance (O&M) agreement.
'
i??
T
n/a 9. A copy of the deed restrictions (if required),
pdc Attached 10. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests, County
soil maps are not an acceptable source of soils information.
Form SW401-Wet Detention Basin-Rev.8-9/17109 Part III. Required Items Checklist, Page 1 of 1
. ?oFwarE9
?
NCDENR o
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely frlied out printed and submi ted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
INS 111111 IM I N A11111 On
Projed name tytifara°Avenue.> r? -4
'?

Contact name
Peter Crisen v
Phone number 387,-9174 >, «r >a-
Date =AugiBt17;2(i10' r ??3..,f `_{ <t..
Drainage area number ?'" `? s3 r+ ''
Type of BMP
Drawdown flow from the BMP
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 inlhr stone
Time of concentration
Rainfall intensity, 1 0-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulcted bioretention cell?
To a wetland?
To a fitter strip or riparian buffer?
Other (specdy)
Filter Strip or Riparian Buffer Characterization (if applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level lip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per efs
Answer 'Y' to one of the following:
Length based on the 1 inthr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
`Mtb
cis
>°> fe
fe
o?
cfs
i.? min
r in/hr
r
cis
F
Do not complete this section of the worksheet.
Do not complete this section of the wodcsheet.
Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
Do not complete ft section of the worksheet.
Do not complete tht section of the worksheet
Do not complete itds section of the worksheet.
Do not complete this section of the worksheet.
s ?-
yN (Y or N)
y y 'N (Y or N)
:N?,' ;,(YorN)
l* ?' (Y or N)
NaturalGiroirnd- x

ft
? ? ft
ft
fmsl
' fmsl

(Y or N)
sq ft
fl/cfs
"N (YorN)
Y ` ` (Y or N)
N " (Y or N)
0.10; cis
(Y or N)
No foraWy is needed.
A bypass device is not needed.
#VALUE!
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lip
Are level spreaders in series?
Bypass Channel Design (if applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
ft
N (Y or N)
#VAWEI
(Y or N) Do not complete this section of the worksheet.
(Y or N) Do not complete this section of the worksheet.
Do not complete thus section of the worksheet.
ft
Do not complete this section of the worksheet.
ft Do not complete this sedan of the worksheet.
ft Do not complete this section of the worksheet
ft Do not complete this section of the wofthest.
ds Do not complete this section of the worksheet.
Do not complete this section of the worksheet.
B i
Form SW401-Level Spreader, Filter Strip. Restored Riparian Buffer-Rev.5 Parts I. and It. Design Summary, page 2 of 2
Please indicate the page or plan sheet numbers where the supporting documentation can be found. M Incomplete submittal package will
result in a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met ff the applicant has designated an agent, the agent may initial below. ff a
requirement has not been met, attach justification.
Pagel Plan
In ais Sheet o.
Z- 1.
`-
Plans (1' - 5(y or larger) of the entire site showing:
- Design at ultimate build-out,
Off-site drainage (11' applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Forebay Cff applicable),
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROM, and
- Boundaries of drainage easement
?iLL r 2. Plan details 0' = 30' or larger) for the level spreader showing:
- Forebay (ff applicable),
- High flow bypass system,
- One foot topo lines between the level lip and top of stream ba
- Proposed drainage easement, and
- Design at ultimate build-out.
3. Section view of the level spreader (1' = 20' or larger) showing:
_ 1 i-Aftn4 flin cve+om fif annlinahlel.
nk,
- Level lip,
- Upslope channel, and
- Downslope filter fabric.
Ow. A date-stamped photograph of the filter strip that dearly shows the type of vegetation that is present
5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
A6?" 6. The supporting calculations.
p? e_ A??A JA 7. A copy of the signed and notarized operation and maintenance (OEM) agreement
rl?L 8. A copy of the deed restrictions (ff required).
Part III, page 1 of 1
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5
WEAK
Permit Number
(to be provided by DWQ)
of warFq
o -?
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
BIORETENTION CELL SUPPLEMENT
This form must be filled out, printed and submitted.
The Required Items Checklist (Part 111) must be printed, filled out and submitted along with alt of the required Information.
Project name
Contact name
Phone number
Date
Drainage area number

Site Characteristic
,a 0 492 ftz
Drainage area
Impervious area 1 Oft
Percent impervious 57.1% %
1
Q inch
Design rainfall depth .
Peak Flow Calculations
Is prelpost control of the 1-yr, 24-hr peak flow required? ? (Y or N)
1-yr, 24-hr runoff depth ,J in
1-yr, 24-hr intensity 4<70 irVhr
Pre-development 1-yr, 24-hr peak flow ft'Isec
Post-development 1-yr, 24-hr peak flow M; < : ft /sec
PrelPost 1-yr, 24-hr peak control 2.000 ft'/sec
Storage Volume: Non-SA Waters
1
50 ft'
Minimum volume required ,
_ r
Volume provided 1!,$55.0 fe OK
Storage Volume: SA Waters
??{?
9
1.5" runoff volume ft
Pre-development 1-yr, 24-hr runoff ?"` fta
PosWevelopment 1-yr, 24-hr runoff y'- a fe
Minimum volume required 0 fta
Volume provided 0
Cell Dimensions ,
Pending depth of water

121nches

OK
Ponding depth of water 1.00 ft
Surface area of the top of the bioretention cell 1855 0 fe OK
Length:
' X45 ft
OK
Width: -" 41_ft OK
-or- Radius
".? , ft
_
Media and Soils Summary
h
OK
Drawdown time, ponded volume r
Drawdown time, to 24 inches below surface hr OK
Drawdown time, total: 21 hr
In-situ soil.

Soil permeability ; 1.00. in/hr OK
Planting media soil:
Sal permeability '.J..00 inlhr OK
Sal composition
% Sand (by volume) OK
% Fines (by volume) 10ya OK
% Organic (by volume) `. 4Vp OK
Total: 100%
Phosphorus Index (P-Index) of media '20 (unkless) OK
Form SW401-Bioretention-Rev.8
June 26, 2010
Parts I and II. Design Summary, Page 1 of 2
Permit Number.
(to be provided by DWQ)
Bain Elevations
Temporary pool elevation kf il9 fmsl
Type of bioretention cell (answer 'Y' to only one of the two
following questions):
Is this a grassed cell? Y- (Y or N) OK
Is this a cell with treestshrubs? (Y or N)
Planting elevation (top of the mulch or grass sod layer) 266:8 fmsl
Depth of mulch Rr 'inches
Bottom of the planting media soil ?•$. fmsl
Planting media depth 2 ft
Depth of washed sand below planting media soil z`sQ ft

Are underdrains being installed? (Y or N)

How many dean out pipes are being Installed? OK
What factor of safety is used for sizing the underdrains? (See
1
` ° `
?
OK
BMP Manual Section 12.3.6) x
Additional distance between the bottom of the planting media and 1 ft
the bottom of the cep to account for underdrains
Bottom of the cog required 263.8 fmsl
SHWT elevation ; a "Zt1 fmsl
Distance from bottom to SHWT 2.8 ft OK
Intemal Water Storege Zone (MIS)
Does the design include IWS tJ? (Y or N)
Elevation of the top of the upturned elbow z fmsl
Separation of IWS and Surface 266.8 ft
Planting Plan
Number of tree species ` "
Number of shrub species s`.
Number of herbaceous groundcover species - OK
Additional information
Does volume in excess of the design volume bypass the
bioretention oW.
Does volume in excess of the design volume flow evenly distributed
through a vegetated filter?
What is the length of the vegetated filter?
Does the design use a level spreader to evenly distribute flow? is the BMP located at least 30 feet from surface waters (50 feet if
Y'*
SA waters)?
Is the BMP localed at least 100 feet from water supply wens?
Are the vegetated side slopes equal to or less than 3:1? °
Is the BMP located in a proposed drainage easement with access
to a public Right of Way (ROW)?
Inlet velocity (from treatment system) x
Is the area surrounding the cell likely to undergo development in t N
the future?
Are the slopes draining to the bioretention cell greater than 20%?
Is the drainage area permanently stabilized?
Pretreatment Used
(Indicate Type Used with an ',V in the shaded cell)
Gravel and grass
(81inches gravel followed by 3-5 it of grass)
Grassed swale
Forebay
Other
_ (Y or N) OK
?x (Y or N) OK
(Y or N) OK
:(Y or N)
(Y or N) ICMr'? ??` ?1 "
?ft ?? AL,L ?aw?16fh 'r?Y? l?fo I?J?:
Y or N) h1f ?41r ? 4'?c,,16 D.1 j
(Y or N) OK ,?F.? >*T?VB- {t[Td - is
L?L
? 1 ft /sec OK
k (Y or N) OK
(Y or N) OK
Nt
(Y or N) OK
X
OK
Form SW401-Bioretention-Rev.e Parts I and It. Design Summary, Page 2 of 2
June 25,2010
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result in a request for additional Information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met. If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Page/ Plan
In' 'als Sh No.
0. d, C 1. Plans (1" - 50' or larger) of the entire site showing:
Design at ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Forebay (if applicable),
- High flow bypass system,
- Maintenance access,
- Proposed drainage easement and public right of way (ROM, and
- Boundaries of drainage easement
G G'G 2. Plan details (1' = 30' or larger) for the level spreader showing:
l? - Forebay (d applicable),
- High flow bypass system,
- One foot topo lines between the level lip and top of stream bank,
- Proposed drainage easement, and
- Design at ultimate build-out.
3. Section view of the level spreader (1" = 20' or larger) showing:
- Underdrain system (if applicable),
- Level lip,
- Upslope channel, and
- Downslope filter fabric.
4. A date-stamped photograph of the filter strip that clearly shows the type of vegetation that is present
I
5. A construction sequence that shows how the level spreader will be protected from sediment until the entire
drainage area is stabilized.
6. The supporting calculations.
C jT'pv
p? -Tiw7. A copy of the signed and notarized operation and maintenance (0&M) agreement
8. A copy of the deed restrictions (if required).
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Part 111, page 1 of 1
MCDENR
:tfe
77 771
fCz
cts
min
in/hr
cis
STORMWATER MANAGEMENT PERMIT APPLICATION FORM
401 CERTIFICATION APPLICATION FORM
LEVEL SPREADER, FILTER STRIP AND RESTORED RIPARIAN BUFFER SUPPLEMENT
This form must be completely fihd out, printed and submrYted.
DO NOT FORGET TO ATTACH THE REQUIRED ITEMS CHECKLIST AND ALL REQUIRED ITEMS (NEXT WORKSHEET)!
Project name M9arioAvernre?-?_ 'r K ?> ? ? ?; > v ?x r ? 4:
Contact name ;Peterl;nossetf ra 1 T ° A 6. '; v x
Phone number 387-1174
Date August 17 2010° ` ;
Drainage area number
For Level Spreaders Receiving Flow From a BMP
Type of BMP Blo eteddori Leif , T", $ m
Drawdown flow from the BMP M010, cls
For Level Spreaders Receiving Flow from the Drainage Area
Drainage area
Impervious surface area
Percent impervious
Rational C coefficient
Peak flow from the 1 in/hr storm
Time of concentration
Rainfall intensity, 1 0-yr storm
Peak flow from the 10-yr storm
Where Does the Level Spreader Discharge ?
To a grassed bioretention cell?
To a mulched Noretentlon cell?
To a wetland?
To a filter strip or riparian buffer?
Other (specify)
Filter Strip or Riparian Buffer Characterization (If applicable)
Width of grass
Width of dense ground cover
Width of wooded vegetation
Total width
Elevation at downslope base of level lip
Elevation at top of bank of the receiving water
Slope (from level nip to to top of bank)
Are any draws present?
Level Spreader Design
Forebay surface area
Feet of level lip needed per cis
Answer 'Y' to one of the following:
Length based on the 1 in/hr storm?
Length based on the 10-yr storm?
Length based on the BMP discharge rate?
Design flow
Is a bypass device provided?
i?Of WAT?OG
Do not complete this section of the worksheet
Do not complete this section of the worksheet.
Do not complete hs section of the wor1(s1`1e8t.
Do not complete ft section of the worksheet.
Do not complete this section of the worksheet
Do not complete this section of the worksheet
Do not complete this section of the worksheet,
Do not complete ttds section of the worWieet
K r (Y or N)
N (Y or N)
`N (YorN)
N
(YorN)
Wait Ground ,
:xft
r ft
y' ft
fmsl
.: ?.r "?., = fmsl
o?
(Y or N)
sq ft
ft/cfs
N (Y or N)
Y (Y or N)
N (Y or N)
_.0.10
. cis
Y
N' ':.(YorN)

No forebay is needed.
A bypass device is not needed,
#VAWE!
Form SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and II. Design Summary, page 1 of 2
Length of the level lips 13,90 -,54 ft #VALUE!
Are level spreaders in series? N (Y or N)
Bypass Channel Design (If applicable)
Does the bypass discharge through a wetland?
Does the channel enter the stream at an angle?
Dimensions of the channel (see diagram below):
M
B
W
y
Peak velocity in the channel during the 10-yr storm
Channel lining material
(Y or N) Do not complete this section of the worksheet.
(Y or N) Do not complete this section of the worksheet
Do not complete this section of the worksheet.
ft Do not complete this section of the worksheet.
z ft Do not complete this section of the worksheet.
, ft Do not complete this section of the worksheet.
r" r r ft Do not complete ft section of the worksheet.
cis Do not complete this section of the worksheet
Do not complete this section of the worksheet.
¢h u
? w
B
Fonn SW401-Level Spreader, Filter Strip, Restored Riparian Buffer-Rev.5 Parts I. and 11. Design Summary, page 2 of 2
Permit No:
((o ba assigned by DWQ)
Please indicate the page or plan sheet numbers where the supporting documentation can be found. An incomplete submittal package will
result In a request for additional information. This will delay final review and approval of the project Initial in the space provided to
indicate the following design requirements have been met If the applicant has designated an agent, the agent may initial below. If a
requirement has not been met, attach justification.
Pagel Plan
Initials Sheet N .
??L G 1. Plans (1' - 50' or larger) of the entire site showing:
' - Design at ultimate build-out,
- Off-site drainage (if applicable),
- Delineated drainage basins (include Rational C coefficient per basin),
- Cell dimensions,
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Clean out pipe locations,
- Overflow, device, and
- Boundaries of drainage easement
f -- 2. Plan details (1' = 30' or larger) for the bioretention cell showing:
- Cell dimensions
- Pretreatment system,
- High flow bypass system,
- Maintenance access,
- Recorded drainage easement and public right of way (ROW),
- Design at ultimate buildoA
Off site drainage (if applicable),
Clean out pipe locations,
- Overflow device, and
- Boundaries of drainage easement
- Indicate the P-Index between 10 and 30
f `/- /'_

3. Section view of the bioretention cell 0' = 20' or larger) showing:
- Side slopes, 3:1 or lower
- Undardrain system (if applicable), and
- Bioretention cell layers [ground level and slope, pre-treatment, ponding depth, mulch depth, fill media
depth, washed sand, filter fabric (or choking stone If applicable), #57 stone, underdrains (if applicable),
SHWT level(s), and overflow structure]
4. A soils report that is based upon an actual field investigation, soil borings, and infiltration tests. The
results of the soils report must be verified in the field by DWO, by completing & submitting the soils
investigation request form. County soil maps are not an acceptable source of soils information. All
elevations shall be in feet mean sea level (fmsl). Results of soils tests of both the planting soil and the in
situ soil must include:
- Soil permeability,
- Soil composition (% sand, % fines, % organic), and
- P-index.
5. A detailed planting plan (1' = 20' or larger) prepared by a qualified individual showing:
- A variety of suitable species,
- Sizes, spacing and locations of plantings,
- Total quantity of each type of plant specified,
- A planting detail,
The source nursery for the plants, and
Fertilizer and watering requirements to establish vegetation.
6. A construction sequence that shows how the bioretention cell will be protected from sediment until the
entire drainage area is stabilized.
7. The supporting calculations (including underdrain calculations, if applicable).
ZbL6 tv. A copy of the signed and notarized inspection and maintenance (I&M) agreement.
WI& IMAj-E+ 9. A copy of the deed restriction.
T
Form SW401-Sbretention-Rev.7 Part III. Page 1 of 1
Jones & Cnossen
ENGINEERING, PLLC
Civil Engineering I Construction Management I Land Planning
TIME:
221 N. SALEM ST, SUITE 200
PO BOX 1062
APEX, NC 27502
Office: 919-387-1174
Fax: [phone]
www.jonescnoswn.com
Project
/ o
Date. Job No.
Weathc Ram aucj
Present at 5

_?? FIELffum 'ORT
Wet Pond - Level
Area
r TF7
t l t
(k~t ?! 4 .'- v Yt?i I t't ?r?f" 1 ";,1 a°
11 i } 4?7 ! r+ + y,y ?+ E a,. ? ?,.iJ 1!1! Y?}?iY ! If Yi?Sl is +r 4??
e?j_??.'?3,":J,?r(S )i ? 1,? r ;,a!J,.,y ,115.-??'o+?*,+-•' '++FJ1V?.: ?: `. A>{ ?(>.? s?t???.
Bio-Retention - Level
Area
?Y r \ t
F
z 413

,W
NorE~: c
. WEf DCi~CT10N PONDS r DCiCN'TION ` I . ALL MATERIALS AND METHODS OF CONSTRUCTION SHALL BE IN ACCORDANCE
~,w.,,.~-°'" Tti~ FOLLC1WtNG MUST FouowrNG Must occuR PRIOR To fINAI PLAT AND~R CERrI~cATE Of occuPANCY 4co}: iN17H TOWN OF APIX STANDAItpS AND So'EGIFICAT4ON5. a
2. BOUNDARY AND TOPOGRAPHIC INFORMATION TAKEN FROM CONSTRUCTI~i
~ w I . ALL STRUGTURAi BI :.e^' Au. srRUCTURAI MusT ICE INSTa.LED rN AccoRaaNCE wlm THE aPPROVtro CONSTRUCTION DRAWINGS. DRAWINGS OF PARKSIDE ON THE CREEK PHASE f ~ THE MANORS AND COTTAGES C
%~w~ z. mE 16N DCS EN61NE TOM9d SPEC BooK INGt THE DESIGN EN6iNEP.R MUST SUE~MtT AN AS-GUILT PACKAGE WHICH MEETS ALL REQUIttNTS PRESENTED IN THE AT BELLA CASA PUD. tPHASE 2) BY JONES ~ CN05SEN ENGINEERING, PLLC. vN SPEC Borne INAUDING A SIGNED AND SEALED CERAFICATtON sraTLfiviEiVT. 3. THIS PROJECT 15 LOCATED IN THE GAPE FEAR bRAINAGE BASIN. THE BUFFERS
s. SUBMrrmEA,FPRO SUf3MTT THE APPROPRJATE SIGNED STRUCTURAL SMP OtM AGREEMENT A14? MAINTENANCE GUARANTEE TO THE SHOWN ALONG EXISTING DRAINAGE FEATURES ARE TOWN OF APIX REQUIRED C
oeVe~oPM~ur PROJECT ~LOPMENr PROJECPS COORDINATOR iN CONSTRUCiiON MANAGEMENT AT 24s-x394. SU>'FERS. NO OTHER DRAINAGtWAY BUFFERS ARE REC~JJJRED. r~1
. / a. A flNAi. PNSPECTIOA' - I I I SUBMIiTAI HAS BEEN @ A fINAi. PI~.Si'EGTION 6Y THE ENVIRONMENTAL PROGRAMS MANAGER SHALL 9E CONDULT®~E TF~ AS-St11LT 4, THIS SECTION ~ MilANO AVENUE DOES NOT TRAVERSE A FEMA MAPPED
~ APPROVAL LE`fTHtTO T ~MrrTAI HAS ~rl RECEIVED. ONCE APPROVED, THE ENVIROI~u1ENTAt PROGRAMS MANAGeRWIU SENd A ~ FLOODPLAIN AS SHOWN ON FEMA MAP X3720072100 DATED MAY 2" 2006. ~ 'ROYAL tt-rr~TO THE OWNER. 5. THIS PROJECT IS LOCATED IN THE TOWN OF APEX PRIMARY WATERSHED
5. IN UEU OF STRUCTt IN LIEU OP STRl1CIURAI E+MP COMPLETION AND HNAL APPROVAL DYTHE ENVIRpNMENTAt PROGRAMS MANAGER, THE L~ .
TOWi~1 MAY ACCEPT A P I oRaJNacE AREA>~RTk VN MAY ACCEPT A CE GUARANTEE IN 1~CODRDANCE WiTt1 LIDO SECTION 6. ! . I z(G}. ~ Tt{E cONTR1ENmNG PROTECTION OVERLAY DISTRICT. ~ LINAGE AREA FOR THE aMPg M5 uNSraeLe AT THE TIME ~ FINAL PLAT APPROVAL. Tae A Su~DIVIsION, TIC TowN 6. THE STREAM BUFFERS SHOWN ARE PER THE INV>STIGATI ON PROVIDED BY
A -~-'""M ~ Nrtli ALLOW A 9KIM0.~F ~ ® ` I - L ALLOW A SKIMMER SYSTEM TO BE CONNECTS TO THE EMlSiGENCY DRAIN SIZED TO l~-WATO'tTHE VOLUME OP SOIL ~ ENVIRONMENTAL CONSULTANTS. Tt1E BUFFER SIZE AND LOCATION HAS
~ ~ ~ r,,r~"'' _ mE BASIN ovER A 2-s q, \ FR~i A sEDIMENr 9A$ BASIN OVBt A 2-3 DAY PERIOD. POROUS t3AFi'LES SHALL ETTHERCONTIt~1E TO BE MAINTAINED (IF CC7NVERTTNG BEEN VERIFIED BY THE TOWN OF APEX ENVIRONMENTAL SERVICES DEPARTMENT. C ~ A SEDIMENT 9ASIN} OR BE INSTALLED. ANY ORIFICES MUST #iE CAPPf~ OR PLUGGED. Q
9 6, All SfRUCiURAI Br ALL STRUCTURAL BMPS ARE REgUIRED TO 8E COMPLETED PRIOR TO A hTNAL CO FOR A SITE PLAN MID ISSUANCE OF I O:. ALL NECESSARY PERMITS SHALL BE OBTAINED FROM DWQ, THE ARMY CORPS
1 a`" P WtTHtN A \ _ '`'r. 90~ 0 COS ~ of cos wrmrN A SUBDIVISION. IF TLR SUBDIVISION LS TO BE PHASED, ALL sTRUCTURAI. BMPS sHau. BE OF ENGINEERS, AND OTHER AUTHORIZED AGENCIES PRIOR TO CONSTRUCTION NPLETED PRIORTO ~SIJANCE OF 9096 OP COS WtfI11N THAT PHASE. ACTIVITY IN51DE THE DELINEATED STREAM BUFFERS.
„r,._,,.,,.,~ COMPLETED PRIORTO I 1 I 7. IF A 9TRIJCTURAL S' IF A STRUCTURAL BRAP COUNTS TOWARDS RCA, THE REQUIRED LANDSCAPING SHALL tiE INSTALLED OUItlNG THE
. ~ ~ ® A ` ~ AP?ROPRIATE ryRawrr~ 'ROPRIATE GROWING SEASON AND COORDINATCD WITH THE TOWN 2CMIING COMPLIANCE OFFICER AT 249-3426.
® ~
A ~ E E ® AI NT .m,~
NOTE: RISER9HALL BE ~
jOP oF„~AM ° 2n.o 24" x 24" {INTERIOti}} TRASH RACK PRECAST STRUCTURE 100-YEAR FLOOD QFV.
ME NCY SPILLWAY ® 274.8 . @ 274.
~~^a:~ ~ ~ sye•r+ ~
o/' l 1 ~ ~.rr w W WATDt QUALITY STORAGE ~ ~'IWNAY ELEV. ~
TOP OF RISER s 2 m 274,6 Ill IO
o ~ ~4 2 VEGETATIVE
~ Z 2 ~ NORMAL POQL ELEV. = 274.0 0;1 ~ '
1 . TtW Of POREBAY - I ~ POND
ELEV. = 278.5 ~ DAM
. T'OREBAY ~ ~1
t N
° CONTRACTOR TO VALVE 24'x24" ~ INSTALL 2-112° 8~~.'~ RL9ER APEXy NC
r SKIMMDt POR TEMP. .
~a ..p SEDIMENT CONTROL Q~7
.p 2"ORIFICE ~ PIPE VMMfMF: R.C0111
N INV. 267.7
~kt,4.t; 6° DRAIN WJ I' SEDIMENT VALVE 12" ~ t g INV. _ ~,wa/liegey
,MY1 ~ BOLTON ACCIAu1LAAT~At 267.0 4 'lei .
OF POND = AREA 12° ~ 'I 269.0
S. 4k4k2' $k4kl'CONC.
a DEEP ANfi ",~EI3' COUAR
. ~ "s-~" MISTALL COFICREIE ~ WP-RAP ~
r•,,..-- N,.• SADDLE TO LOCATION ~~A F of ANiiSt~P COLIAR APRON ~~~f~±M~
s..-" j
I '••O f " -d" TAI L - PO I y'~,µ"°`
~ N.T.S.
1 ' ~ .
. 1 Vl w r 1
`
NOTES:
i~ i i , fABR1CATE TRASH RACK BY ~ WD.171NG #`4 REAR SPACED
i _ ON CENTER O
i r ~ 2. BOLT BOTTOM OF TRA'Stl z RACK TO TOP Of 24'k24` RISER
X h za"
/ ~ MINIMUM O
~j I 12" RIP-RAF E>dSTING U
r 0 ~f _ Deo=6° GROUND
~ / o ~ ~
BOTTOM WIDTH m 5' ~ rn
24° GEOTIXfILE LINER ' y , U, w~.+ ~ .
24` E ENCY SPILL~/AY a~TAIL ~
II I - v ~
/ d ' ' i
~ ~ w o / ® /1 ~ AO / ~ • e ~ ~ ® \ AIL - T 5H RACK N.T.S.
l1J ~
; ! \ z ~
o
~
/ % / ~ o DE51GN INFaL~oAriON 2k2'PRE~TYARD ~ i
i / / ° ° / ® r IN1CT ITEM BMP I l~ ~G.. sopTO at;cra~unaaa A 266.$
i / r~rAelrsatlAlER t~ldrr~u B 264.$ ~ ~ L~.
/ / r,,, ® MaTaual. C 267.$ LL..
I D 264.0 ~
e e / i ® ctcarxx~r ~ E 263.$
i 3,~ a~ Tor ar~utTn Darn taev T~ F .26$.0 d~ Tor or YARD IN,ct
~ e . ~ gam- T~ BEkCY9PAlWAY H 4 PVC
~ r~ or , 3' _-I ~ ~ e Timor I l---I ~ I ~----I ~-ar~ I 6" PVC
~ ~ ~ f / I ~ roNO IP.~/ A9 ~oR~e~a1~ - - - - - Pt~ (r.1EV A9 -
~
r r ® ~ eon or _ _ _ - _ ENGINEERED FILL MATERfAI COMPO51TdON oP - ourler ~ $5 - $746 SAND PHOSPHORUS INOEx SHALL
~ ~ 8 - 12~, F1NE5 BEMtEEN I 0 4 30 MAT~a. ~ TSi I 3 - 546 ORGANIC
r , I
ra~A+eAe~ ran FA9RIC u?m~ e ra~+eaearaTat ~seRSTRUCTURe raaRlc urn ~m~ Rn+IaTT ouT taEV'm NOTES:
~ / I e B~RPf@RION t B~RPT@RION Ct91 LNU>~ s~ortw rvc ount7 rlrE MVER.T
Ix~BtoRNH o~ ~ ~ I . THE PRE-CAST YARD INLET STRUCTURE SHALI. BE CONSTRUCTED wasr~D sr sro~e
I j ~ 5Tf e APE 2. C~.O~RAGTORSHALLREFERTO1ttE~CONSTRf,ICT10N5EG~1EaCE
( s A 1 ON THE APPROVED CONSTRUCTION DRAWINGS FOR iNST1d.tATION u. SEQUENCING INPORMAT~N. O
~ i E 8. RO'ER TO ~ CONSTRUCTION DRAWINGS FOR
r ~ r D ~ i I- NTI N1P C 055-E ION N.T. . ADDTtIONALINPORMATIONANDN0TE5. 4. REFHt TO APPROVED CONSTRUCTION DRAWINGS FOR O
! QUANTITY AND N°~9tiMATE LOCATION OF UNDERDRNN PIPES.
. o ~ o J alp
I ! x20° PpC
Y, ~ 1_ 91 0 ~ TH1:51GN1
i ~ I Pt~THEc THE 51GNATURES AFFUIED BCLOW C~tTIPY THAT THIS SHECT HAS ~1 REVIEWED AND APPROVE SOLELY are PER Tt~ cERTIFICATtQrFa SIGNED ON THE covER sHlxT' OF THESE CONSTRUCTION PLANS. JULY 16, 20 ( 0
~ / o I >f
, ® I cap - ENGI CM - ENGRIEI9tING DATE PLI6UC WORKS -ENV. PROGRAMS DATE
~
/ CM -TRANSPORTATION DATE PLANNING DATE
r
1 / e cM - auto CM -BUILDING tNSPECT10N5 DATE PWrNING -TRANSPORTATION DATE
A / PUBLIC wt O 2O 40 80 PIIBUC WORKS - WA DALE FIRE DATE
AREA GRASS mmcm f me NR?RKS • ELECMC DATE PARKS, RECREATION 4 CLXnWAL RES. DATE C-G
I ~ SWALE ~ MWC WORKS : 54E DATE GRAPHIC SCALE
0908-M

sEEpBED PREPARATION alp C
voxu4uavtNCe tOP ErtVATWN OP 9TORhnVASER 0.6=P ~ ro
. 1. Chisel cent acted areas aetd spread topsail 3 Inches deep over o.s=r~ ) P X57 wA reax. ~ < Max. ~ ~ a
adverse sell c~rJditions, if avopable. ~r-....,,~ rk>aleaa ~p~ STONE I ~ avs 0 >f 7. 9N.T 4Cfpi TO IE BgLp MAERE 'IpE OF @!t4 S IFFY N VLR11CAt. MEIONT
2.) R~ Ute ent~e area to 8 motes ds~t. JINR ALdLID TO tHTdlCEpi F JVIb/aR GIYEAT TD A 4U1tE't: r n 11C~
3,} Remove dl loose rock, roots, ar?d other obstructions leovkrg t { crAVS' aP-rrrw rr illt~ P 4. SST 9MAt4 MEII 3A.T t11Tpl ~ OPIE-HM,F fipl. ..J
surge roasonably ~nooth and uniform. aw,s z 8.e s. ~TtS! HE TIIEH 0 E9T TIt4 ,E,a
3 ere 4.) Apply agriculturd lime, fertilizer, and hate uniformly n.,~aeniwc ~ i~ fi.
( } cetd mix with sop. rme blow ° ' ~ E
~ m
5.). Con#ktw tpla~e wrtA a welt-ptrfvertzed, ftnm, y unfform asdbe<i h prepared 4 to 6 kidtee deep.. VI ~ -co~wcT. ~ W ~ ~ raotH ~T vAR. ~ ~ atrn~ ~x;,;,w,.•, ~
x -'a or aTal
6. Seed on lreehly Prepared ~dbed and cover seed . pghtly with vAw ~ xEr wr aw eit!a na oA eeexbng e~q?ment or adt~adt efts saedktq. r,~,wwatume roR si pp tt119 Rd10 TH5 tNUt fir+~ ~'•C°';~'''~iedwsM:'+.v~'!,
K49AK$.Ei1ik1114rJOR ~,v~. ~ 4a
7. Mulch bnmediately after eaedang std anchor mulch. - ~I' +wamxra~laN.rwNNOneareauu - , ' , w
a+aAaem ~ k e.4"t .•e.l. R'.~ ,-,t, fti't 5. kt eat all seeded areas and make nec repairs err ~ ~xAP
) ~ eeaQCy NaQYNglDBf01R. S •'~~>k Snn~r'1C~k~r°i~ ' resledings within the pl,ariting season, if possible. ff atond should b® ~aw.rra~r~atooa,wmun~ ~ ~e~~r .rah -
over B0~ damaged, raeetatdidt fopowing origind lime, fertilizer, and k ' seeding fates. aaxaa+u i57WA5r1RT5TONE c
. M ~ EbINaNWr• ~ - . CROSS SECTIONAL VlEifd V
9,) Consult Conservation Inspector for mdntarance treatment and "~;r,. fertp(xatlon after permanent cover is estofdiehed.
_-LD.€.~ C
Apply: Agrkxdtural Limestone 2 tons /acre (3 tone /acre in SJFa day sbpe~ Fertilizer, - 1000 Ibe. / oae 10-10y-10. SuperPF+oephata
- 5.00 Nee. /acts - 20fL Mulch - 2 tons /sae - erttdl grain
straw. Anchor Asphalt Emulsion 0300 gds, /sae. JiTO. Ha. TO~VId OP APEX TO OF APEX sto. ND. TQWN OF APEX Da RMO
sTANDAIZtis T DARD TIVIP® Y SILT FENCE DETAIL 4.01 sTANDARDS CHECK DAM 4.44. ~„,,S APP. TEMPORARY SILT QITCM 2.15
JFfECTIYEIJLER3,~J ~r,tr~t JEFECTIdE av , ate DEC LEI
SEEDING SCH DULE (REVI~D, 1-1-as)
PLANTNrG RATE 1~ ~
?.21 N. SALEM ST ~ St~TE 200
Au 13 -Nov 1 Tall Fescue Ibs. / sae Nov i -March 1 Tdl Fescue aetd 300 Ibs, / ire ~rc m HtEP' t+uT ~I.r Faa qt TpEE PROTECTION Fwix uP
R ~ 25 lbs. sae sr u>TU ~ a°-o' N Abruzzi ye / ~ POSiS x-o' ~ aN snE ~ To cowsTaucnoN ~mwta a utam. PO 80X 1{162
Mardi 1 - April 1~ Tall Fescue 300 Ibe. j acre stlroP ~ ~ i:el 't. a " z ~ aN THE slt~ ~+E sulx+ tNAT APE>(, NC 275Q2 *o • ~ 1(o,r ~ e,„.'~ r''~. ati~rc>° D,+~t; • . tRlo I$ NOT AENOYEO 9t' 11E VIJAg81RAVEti- -;w~:~'` xaa~~• x°.`-z arc o4ER THE ST016 TEEN THE TMES of TIE 0(flCa; 914367'-1974
Apfir 15 -June. 30 Fkalied Common t3amudagraes 25 Ibs. /sae aavA?euo July 1 -Aug. 15 tail Fie and 120 lbs. / oae xt sLaPE {aAx) to RE -ar' eTmNE To ec iota ~ , ~ oR wmal ~ ~r aE Ta~Nla e~roRE TIE 9193813375 sTaNE oR IT~IRaeo:,. r t ~ ~~h~:;+`''~°l. tS ROAD.
and tlrotrntap Mipet 35 Ibs. j sae ~ a ~c Y ~s••f _'e~e{tiSe+ly=~i',~'~';~1:,' 6i~AlER. 31.0E A PPIO~CT TQ f'Ikl. IIYD /YO OE~114$ WYMYr.'~1Q~I~IT
a Sorghum - Sud~t Nybrids 30 Ibex /sae ~r t~wM,Y:•,ddr,~~}',~:,•'s``.';5~5'{"'°~. QN TO TIE PIIBUC p0/dt THE OGYWN~q A111lIOlpfl' ::~W+r~R~~Z:'a~•;?~~+.~f+e~, Ac,'y*~a NYL d'~ENI THE ME4 NID If#YON$ TIE iMlAilgMlY
I SECTION ~ , PFJ190N A$ MATOCATEO d! 1!E f11ANCIAI. fdOVl.
.i0.1}, ee+~eeleeee
Maroh. t -June 1 serkxra Leepedeza (ttcalned) 50 pis. /sae . and ~ti~ w
March 1 - APrra' 15) Add Tao Fe~ue 920 ~s, / aae t~81tiVE J>'Rir4E t.0ia ttAx. -
March 1 ~ JJate 30 Or Add Weeg~tq Love~oss 10 Ibs. / oae Mardi 1 - Jtme 30 Cr A~J Nullerd Common 8ermudagroes 25 ~s, /acre aM ~
June 1 - Sept. 1 Tail fescue and 120 ~s, / oae ~ , % ~f,~ ~ y F 7j~/(~:, 4
' 8rawntap Millet 35 lbs. / sae z: t {YIAJC) ~ a ~°{j I •41'1,.. M` 4~'hb~ ~~"Y~~~Y~
of Sorghum -Sudan Hyiuids 30 ilia. /sae Sb{tt. 1 - Mardi i Serirea LesPedeza (unhulled - unscari8ed) Tit tbs. / oae ~ ~ ~ ; ~ ~ ~ ti o ~ a ~ ~ a e ~ ~ ~ ~ ~ ~ ; ~ ~ ~ 1 B° tlRl.~ "'1...';.r.y,.,,~ Aea: s:+.~:b1:~.'~•:~.. 1'a' ~
and Tdi Fescue 120 ilea, / sae ~ 1 ~ ~ ~ qIM tN~
25 lbs. sae ~ to A Nov. 1 -March 1 Add Abruzzi Rya / stE~ pJT ~ a t2'-9e' tar err sox
Q
Consult Conservation En~rneer a Sop Consenrotion far cxtdit~al SECTI~I Z
infom~tton txyttcan~Jg other dternokives for vegftation of denuded seas, The above vegstotion rotes are those wiikh do well urJda lord candRiona; other
seeding rate aombkratlons are possible. SiO. N0.
To OF APEX TO OF ,APEX STANDARD CATCH BASIN ~ Resa~l according to aptknum season fa desired penrrinote vegitation. Do sTANDAR®s DIVERSION DITCH 4.06 STANDARDS 4.03 T°s~~1a Ros ~ CONSTRUCTION ENTRANCE 4.05 ~
not allow tetrJ aay covet' to how over 12 in height before mowing, otherwise YARD INLET PROTECTION p ~t?ve tort ~crn~ >>NkRT 9 a 1 EfFECItY~3,2002 AIiFT 1 OtT ~ Z
fee~ue may ba dtod~i out.
L.
T iN ~ J
CUSTOM SEDIMEN BA$
GONSTRUCTIQN SEQU~IGE ~
J`'IGAIJ`D DE51GN ATtON To ~ i~OVIt~D TNiE~CJ~tOWiNG ~`G1M5 f7NLYAfT~k C©NSrRUCTI©W P1AN5 AR~EAi'f I~Ot/fDAND uv ~ ~
TAff. BY THE ENtilN ON TriE AMY, BYAPPRJDP~tAt~TOWNS CONSTTttUCll~l w~a~
P~CIY Z !1.!
I . i~ILL OUT TREEtPROTECTION FENCING fNSTALLAT{ON PEtiMTf APPLICATK}N (OBTAIN : ~ ~ ~~y i, ~ ~ s+x~ • M~PATptP1D ~ W ~
FROM PLANNING aEPARTMENT). ~a - ~
2. HAVE A SURVEYOR FLAG PROPERTY LINES, EASEMENTS, BUFFERS, TREE P t err PROTECTION AREAS, AND FLAG THE PROTECTION LIMITS. .
NT ZONING COMPLLANCE OFFICER AT ' ' 3. CONTACT AN APEX PLANNING DEPARTME ~ ~
a 249-342& TO OBTAIN APPROVAL FOR TREE PROTECTION FENCING LOCATIONS. • ~ • ' ' ~ • •a, ~ ~
4, INSTALL APPROVED TREE PROTECTION FENCING, SIGN5, AND/OR ANY OTHER Q oL
PROTECTION MEA5URE5 TMAT MAYBE REQUIRED, GALL PLANNING AT 249-3426 a u:k:~:' r. FBI µ y.:a., _ ~ .
FOR A FINAL INSPECTION OF PROTECTION MEASURES. PLANNING WILL FORWARD, 1
APPROVAL TO THE ENVIRONMENTAL SPECIALIST (ROCKY ROSS). °NC ATlON AND ER0510N CONTROL ~ xa~ 5. OBTAIN LETTER OF PLAN APPROVAL FOR SEDIMENT 0
MEA5URE5 FROM THE ENVIRONMENTAL SPECIALIST. r a` xa~wareuv. 2 ALL tETiERS la 8E A? LFJ18t 8 FeON, Y
6. GALL ERIC BATTLE, ENGINEERING FIELD SERVICE'S MANAGER, 249-3510 TO ~ s'4s'H ~eovE. seam ,~roQe~,waa ~a. ~ S fa eE FtAC~D Ai zoo fT. eitFRURb9, AY EACH QIR ~ C~
5CHEDULE A PRE-~C0N5TRUCTION MEETING 1MTH ENGINEERING INSPECTORS AND a~ utHams ease ntu+ ~o sa t~ t~ eNx~aaa,, Ott SIQH PER A1rEA ~ edE.
OTHER TOWN 57AFF, o. AttACit 9otts stxusor to asro r ~1 ~ ~
7. INSTALL CONSTRUCTION ENTRANCE U51NG SURGE STONE t?R RAILWAY BALLAST, ~ unrest r~ IJE AtTACHED TO POSTS x ~ tJai ATtApi To 7taES. s. NH IAEE paatECnort rEHCE 1101 a , Q ~ ~ Z
TEMPORARY DIVERSIONS, SILT FENCING, SEDIMENT BA5lN5, BYPASS CHANNELS, t J u t>J~ M A9 SHOWN ON THE APPROVED PLANS. CLEAR ONLY A5 t: eY ne: s~ ~PAJtiiL~TIT ~ uJ~ Ac> uv s~iae AND/OR OTHER EASURES , ~,~cq~ro,~ e. F to MAMTAM tAFE tray T s I ~ ~
NEGE55ARY TO INSTALL THESE DEVICES. ~ m,aesoa~ ~ ae>~ AHD/aW Paeet tewcAtroH,
8. CALL THE ENVIRONMENTAL 5PECIAUST AT 249-3397 FOR ON-511E INSPECTION AND a c~
0~?TAiN CERTIFICATE OF COMPLIANCE. a ""e°Yi6°''"e'4 Z
I RMfI' APPllGATION OBTAIN FROM BUILDING iNSPECTION9 9. G{XuiPLETI: GRAD NG PE ( ~ NJ~
DIVI510N). TQYIIN OF APEX TO ®F APEX TAN alias SEDIMENT BASINS 4.11 STANDARD TREE TECTIO FENCE DETAIL 10. ONCE GRADING PERMIT IS REVIEWED AND 155UED BY BUILDING INSPECTION5, S D E DETAIL. 2x01
stANJU+~s -CONSTRUCTION MEETING WITH BUILDING iN5PECTiONS (BUOY ~eTIrE: Je,200t s or + ARRANGE A PRE
BAKER) A7 2493381 PRIOR TO ANY GRADING AGTIVtTIES. THIS MEETING 15
SEPARATE FROM ANY OTHER PRE-CONSTRUCTION MEETINGS REQUIRED IN THE . ~
GQNSTRUGTiON SEQUENCE. STORMWAT>~R 6MP CONSTRUCTION 5EQUENCE BOX CULVPRT INSTALLATION SEQUENCE
i i . POST GRADING PERMIT PROMINENTLY ON SiTE AT ALL TIMES.
12. BEGIN CLEARING, GRUBBING, AND ROUGH GRADE OF THE SiTE. I . Tt1E LOCAT?ON OP THE STORMWATl~2 BMPS SNAIL BE USED AS A I. OBTAIN ALL NECESSARY PERMITS PROM THE STATE OP NORTH I STOCKPILE SUFFICIENT AMOUM QF TOPSOIL TO COVER 3 INCHES OVER TEMPORARY SEDIMENT BASIN DURING TFIE CONSTRUCTION OP THE CAROLINA AND THE TOWN OP APEX.
LANDSCAPED AREAS AT THE END OF THE PROJECT. PROJECT. 2. coNTRACroR SHALL CLEAR ANO JN5TA1.1. ALL REQUIRED ERQ51oN
A TORM SEWER iF SHOWN D PROTECT INLETS WITH INLET PROTECTION 2. THE TEMPORARY 5EDIMENT BASINS SHALL REMAIN iN PLACE UNTIL CONTROL MEASURES AS SHOWN ON THE APPROVED CONSTRUCTJORi 14. iNST LL S , , ~ . coMPI.ErJON oP coNSTRUCTION AND all LJPL/WD AREAS ARE DRAWINGS.
DEVICES, SEDIMENT DEVICES, AND/OR OTHER APPROVED MEASURES. MAINTAIN ADEpUATELY STABiUZED. 3, Dg-WATER WORK ARLA BY USJNG COPPER DAM5 AND PUMP5. TtiE SIGNATURES APFlXED BELOW CERTIFY THAT 7tI1S, SHEET tk4S BEEN RtVIL'4VrrD AIdD A~'ROVED SOIl~Y ~
DEVICES AS NEEDED. ONCE THE FIRST LJFT OF ASPHALT HA5 BEEN iNSTAI.I.ED, 3. THE TEMPORARY SEDIMENT BASINS SHAH BE CLEANED OUT OF 4. INSTALL SOX CULVERTS. CONTRACTOR SHALL ENSURE THAT PER THE CER71t9CAT10N9 SIGN®ON T41E COVeR 5HC-ET OF TtIESE CONStRUC'nON X15. ~
INSTALL CATCH BA51N INLET PROTECTION ACROSS GRATE AND THROAT OF THE 5EDJMENT DURING THE coNVERSIOIV To THE PERMANEM' AQUATic iJP~ PASSAGE PROVISIONS ARl' FoLLOVdED, AND THAT PIPE E P QDUCTS 5TORMWATER BMP DEVICE. FOUNDATION IS SATISFIING.
CATCH BASIN IN THE LQW DRAINAGE AREA OF THE ROAD. U5 R q, THE PERMANENT STORMWATER BMP DEVICES SHALL BE 5. BACKPiII PIPE SUFFICIENTLY FOR STABAUTATION. APPROVED BY THE TOWN'S ENVIRONMENTAL SPECIALIST. MAINTAINED AFTER BEING STABIU2ED WITH SEED aND STRAW UNTIL. G. R1:MOVE coPPER DAM5 AND DIVERT CREI]C JNTO PiPI~. CM • ENGINEBtIIdG DATE PUBLIC NK)RKS -ENV. PRCIGRAMlS DATE p
15, AFTER COMPLETION QF ANY PHASE OF GRADING, ESTABLISH GROUNDCOVER ON ADEQUATE VEGETATIVE GROWTH IS ESTABU5Hf~. 7. CQMI'tETE BACr.PILI AND ROAD GRACNNG.
GRADED SLOPES AND FILLS WITHIN 15 CALENDAR DAYS. e. CONTRACTOR SHALL IMMEDIATELY STABAU2E ENTIRE AREA. cM-TRANSPORTATN7N aATt: PLANNING DATE N.1'.S. V1rtR
16. STABILJZE 51TE AS AR.EA9 ARE BROUGHT UP TO FINISHED GRADE WITH VEGETATION
OR PAVING. CM =BUILDING INSPECTIONS DATE PLANNING • TRANSPOItTATI('~I .DATE ~ 9~ifiEMBER 2, 2Q08
17. FLUSH AND CLEAN ALL 5T(~MWATER SYSTEM PIPES, CLEAN AND REMOVE SEDIMENT FROM TEMPORARY SEDIMENT HOLDING DEVICES. FOLLC?W BMP
CONSTRUCTION SEQUENCE FOUND ON THE GRADING AND/OR BMP DETAIL SHEETS PUBLIC WORKS - WATERI5EWER DATE FLRP DATE 3i! I/ f O ! st TRC COMMENTS
ON THE CONSTRUCTION PLAN 5ET.
18. REMOVE TEMPORARY DIVERSIONS, SILT FENCING, SEDIMENT BA5lN8, ETC. AND PUBLIC WOR>;S -ELECTRIC DATE PARKS, RECREATLON # CULTURAL. RCS. DATE 071! 6/ I O 2nd TRC COMMENTS
PROVIDE ADEQUATE COVER OR PAVE ANY RESULTING BARE AREAS, ALL PERMANENT
EROSION CONTROL DEVICES, SUCH AS VELOCITY DISSIPATERS, SHOULD BE PUBLIC NbRKS - S 4 € DATE
INSTALLED AT TH15 POINT. 19. WHEN VEGETATION HA5 BEEN ESTABLISHED, CALL ENVIRONMENTAL SPECIALIST AT .
249-3397 FOR FINAL 51TE INSPECTION•
__.~,....r-~.,.,..,....wr..w,,w. w.w,. .-w w.e r.., ..w.ne.a a~-„w~~. nsGn, AI VSY xCTGO
ZQ. VDIAIN L.CKllrl(.AiC urwmrLr-iivi4 rmum CNVIKVNMGNlMLarLtk lMUai rv 11-M
PA551NG FINAL 51TE 1145PECTION.
21.OWNER 15 RE5PON5IBLE FOR PERMANENT M051ON CONTROL MAINTENANCE OF THE C-7
51TE.
0908-M

CAPE NOTES;
® .
1. CONTRACTOR TO FIELD VERIFY LOCATION AND DEPTH OF UTILITIES PRIOR TO INSTALLATION. J
~ ~ 2. ALL PLANT MATERIAL TO COMPLY WITIi AMERICAN STANDARD FOR NURSERY STOCK BY THE. AMERICAN ~
0 ASSOCIATION OF NURSERYMEN, INC, THE PLANT MATERIAL MUST STAY MOIST AT ALL TIMES FROM THE TIME
CEM'IPEDE GRA55 \ 18,9x0 SF IT LEAVES THE NURSERY UNTIL IT IS PLANTED. 3. LOCATION OF PLANT MATERIAL TO BE REVIEWED 8Y LANDSCAPE ARCHITECT PRIOR TO INSTALLATION. tnn~`
4: ALL CONSTRUC110N TO CONFORM TO THE STANDARDS AND SPECIFICAlION5 OF THE TOWN OF APEX. V
cc . 4 3 ~ 5. ALL PLANTS TO BE COMPACT, UNIFORM AND WELL GROWN. Z
6. GRAPHIC DEPIC110N 5UPERCEEDS QUANTITIES LISTED IN PLANT LIST AND PLANT LABELS.
7. ALL 1REES SHOULD BE PLANTED IN THE FALL, FROM ~
i PIV 8. ALL WETT.AND SPECIES SHOULD BE PLANTED IN THE LATE SPRING FROM M 10 9. DURING THE FIRST GROWING SEASON, THE HERBACEOUS PLANTS MAY BE SUBJECT TO DEPREDA110N. IF W
THERE ARE KNOWN FLOCKS OF DUCKS OR GEESE IN THE AREA, PRECAUTIONS MUST BE TAKEN TO INSURE.
5 5C ~ • f PLANTS SURVIVAL. PLEASE CONTACT LANDSCAPE ARCHITECT FOR INFORMATION IF NEEDED.
iO. THE LANDSCAPE ARCHITECT AND A LICENSED SOIL .SCIENTIST TO BE ON-SITE PRIOR TQ THE
EXCAVATION OF THE POND. APPROPRIATE SOIL SHOULD BE IDENTIFIED BY THE LANDSCAPE ARCHITECT OR
~ ® ~ 3 PIV 18 JE - SOIL SCIENTIST.
\ 23 IV 61G 3 CC \ 2 PIV. \ Q ~ 11. THE VEGETATED SHELF SHOULD BE OVER-EXCAVATED BY 9-12"'AND AMENDED IMTH ABOVE MEN110NED SOIL FROM THE UPPER.9-i2" FROM THE CENTER OF THE SWALE. W
:•r: ~ 11 Z7~.0 . 1___.. -~orr~al mat ~ / Q ® I s PC ~
~ ~ • / ~o ~
r~NERAI NOTES;
•os•' 0 PV
:.w; ~4.: .r i. ALL CONSTRUCT1ON TO CONFORM TO TOWN OF APEX STANDARDS AND SPECIF?CAlIONS.
.•r" 2. CONTRACTOR TO LOCATE AND VERIFY ALL U11LIT1ES PRIOR TO ANY CONSTRUCTION ACTIVITIES. CALL NC ONE AT 9i9-469-4090 FOR LOCATION, OF UNDERGROUND UTIL111ES.
3: CONTRACTOR TO FIELD VERIFY EXISTING CONDITIONS PRIOR TO CONSIRUCI1QN ACTIVITIES.
~ a
~ Pv ~~ECT10N AND MAI~,~,~ANCE .SCHEDULE
• 9 PV 5 IG • - 8 5C
32 JE 37 CJ \ ~ 1. IMMEDIATELY AFTER THE WET DETENTION BASIN IS ESTABLISHED,. THE PLANTS OF THE -
VEGETATED SHELF AND PERIMETER OF THE BASIN SHOULD BE WATERED T1MCE WEEKLY IF
NEEDED, UNTIL THE PLANTS BECOME ESTABLISHED {COMMONLY SIX WEEKS.) 2. NO PORTION OF THE .WET DETENTION POND SHOULD BE FERTILIZED AFTER THE FIRST
5 CA 9 PV 27 'S f•' 22 IV INITIAL FERTILIZATION THAT IS REQUIRED TO ESTABLISH THE PLANTS ON THE VEGETATED
SHELF. FERTILIZER USED SHOULD BE A SLOW RELEASE FERTILIZER SUCH A$ AN ~N,;p,~~'
• ~ 7 9C AGRI-FORM TABLET OR APPROVED EQUAL. s~X1E~p
2 3. STABLE GROUNDCOVER SHOULD BE MAINTAINED IN 1HE DRAINAGE AREA TO REDUCE p~~
THE SEDIMENT LOAD TO THE WET DETENTION BASIN.. ~ ~
i h 4. IF THE BASIN MUST BE DRAINED FOR AN EMERGENCY OR TO PERFORM MAINTAINENCE, THE FLUSHING OF SEDIMENT THROUGH THE EMERGENCY DRAIN SHOULD BE MIMMIZED TO
: wr. . • • ' ' ' 1HE MAXIMUM. EXTENT PRACTICAL.
. .•f. • ~'i •t.7 r ~ • . MYy~' 5. ONCE A YEAR, A DAM SAFETY EXPERT SHOULD INSPECT THE EMBANKMENT. rp0~1
pn, f q~ , 6. AF1ER THE. WET DETENTION POND IS ESTABLISHED, IT SHOULD BE INSPECTED ONCE A
MONTH AND WITHIN 24 HOURS AFTER EVERY STORM EVENT GREATER THAN 1.0 INCHES.
. ~ RECORDS OF INSPEC110N AND MAINTENANCE SHOULD BE KEPT IN A KNOWN SET LOCATION AND MUST BE AVAILABLE UPON REQUEST.
.
SEED BED PREPARATION
_ d • ~ ~ .2
1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES DEEP OVER ,ADVERSE SOIL CONDITIONS, IF AVAILABLE. 2. RIP THE ENURE AREA TO 6" DEPTH.
3. REMOVE ALL LOOSE ROCK, ROOTS AND OTHER 06STRUCIIQNS LEAVING SURFACE RESONABLY SMOOTH AND UNIFORM.
4. APPLY AGRICULTURAL LIME, FERTILIZER AND SUPERPHOSPHATE UNIFORMLY AND MIX WI1H SOIL {SEE BELOW*}.
5. CONTINUE TILLAGE UN1TL AWELL-PULVERIZED, FIRM REASONABLY UNIFORM SEEDBED IS PREPARED 41'0 6 INCHES
DEEP.
6. SEED QN A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK AFTER
5' EME~NCY SPILLWAY • SSING 2 SEEDING. 7. MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH,
8. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN THE PLANTING SEASON, IF
o~ ® ~ POS~BLE. IF STAND SH~LD BE OVER 60~ DAMAGED, REESTABLISH FOLLOIMNG ORIGINAL LIME, FERTILIZER AND. SEEDING
RATES.
s 9: CONSULT CONSERVATION INSPECTOR ON MAINTENANCE TREATT~ENT AND FERI1LIZAlTON AFTER PERMANENT COVER IS z
.-r ~ .e° / , ESTABLISHED.
~ ~ ~ ~ APPLY; Z
AGRITCULTURAL LIMESTONE - 2 TONS /ACRE {3 TONS /ACRE IN CLAY SOILS} ~
~ ~ FERTILIZER - 1,000 LBS /ACRE - 10-10-10
'm' SUPERPHOSPHATE - 5O0 LBS /ACRE - 20~ ANALYSIS.
/ MULCH - 2 TONS /ACRE -SMALL GRAIN STRAW ,
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5 oWN OF nPEx STREAM BuPPER / * ® ~ ~ ®~e / i _ ,
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f 0~ T IOAL / T ~AOONG ~ ~ u-
r'` CLETHRA AINIFOI.IA / SUMM T 24" HT. CONT. B° O.C. LATE WRING 7
/ ~ / OVA / ~ \ ? .1~: ®O~ T / • ® ..ti
CC CARPINUS CAROLINIANA /IRON 2.5° CAL B & 8 12' O.C: F,qu, " 9
r~ ,A' ~ ,gym w: o 7 cLAOIUM JAMAICENSE / sawGRASS 24 HT. 1" PaTS ~ ®•c. LATE sPRiNC ~ ~
/ ~y Pl~ ® / IV PILAUS VIRGINIANA/ VIR(~NIA PINE 2.5" CAL 8 & 8 12' ~Iw FALL ~
!00'TCMMOPAPEX3TREAM~JPPER ~ ~,o • / a ® ~ ILEK GLABRA / INK$ERRY 24• HT. CONT. 5' O.c. LATE SPRING
Z
~ ~ ~ 20' TOA PUBLIC DRAIN. EASE, n /o f ®m 15 RCP Iv ~ IRIS VIRGyNICA /BLUE FI.AO IRIS 6" HT. 1" POTS 3° O.C. LATE SPRING
'~r,. 7 ~,lNGUS EFFUSUS / SOFTRUSH 12" HT. i" POTS 3° O.C. LATE SPRING ~ U
f ; ® GEIVTIPEQE GRASS ` ,
; ! j EXISTING CR):EK C ,°Z PONTEOERIA C~ATA / PICKERELIhEED 12" HT. 1" P01S . O•~ LATE SPRING
\ r V 3 PELTAI~NtA VIRgNICA / ARROVT ARUM 12" HT. 1• POTS 3' O.~ LATE SPRING
f" r
~ e• . / ~ / \ C 3C SAURURUS (~t+1UUS / tIZARO'S TAB. 12" HT. 1" POTS 3' O.C. LATE SPRING
,/.ff9 : ~ 0 i d BMP ACCESS ~ MNNTENACE EASE. s~ 4•
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~ / ' ~ ~ THE SIGNATUtZEB AFFIXED BELOW CERTIFY THAT THIS SHEET HA5 BEEN REVIEWED AND APPROVED SOLELY ;~b' ~ , -
o' o . . PER Tt~ CStTIFlCATlONS SIGNED ON TtIE COVER SHEET OF THESE CONSTRUCTION PlANB, n~a},n~~' ~ AUG 15, 20 I p
~ r ~ ,
~ ~ ~ CM -ENGINEERING DATE PUBLIC WORKS -ENV. PROGRAMS DATE
~
/ r ® . CM -TRANSPORTATION DATE PLANNING DATE ~
/ O , ® •5 . r /
/ 5fP TOWN OP APIX St12~AM BUFFER ~ ° . r / r / , /l CM - BLINDING INSPECTIONS DATE PLANNING - tRANSPORTATION DATE
® ! V~ ~t ® PUBLIC WORKS - WATEP45MER DATE FIRE DATE 0 20 40 80
t ` BIO-RE'fMON AREA P':
t ! 1 PUBLIC WORKS - ELECTRIC DATE PARKS, RECREATION 4 CULTURAL RES. DATE I A
PUBLIC WORKS - 5 4 E DATE GRAPHIC 5CAI F L~'1 4.L. 0908-M

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M the mrcsary aid fooola to the Werth b the Skid. II II ~ rdnd rbq of ~ H root DdI ba Mta ~ d
7, dvdd mod, tram +vkh ho I or r+erro+~ I II tmvc~ont ~ ace at ~ od+«.ta, do not r+ tno of I
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eol, Add compost at 20-3tf~ by I I b hly~dy P~9 a day sock 2 the rant hdl FINISH OF ADJ. sot. Add compost aE 20-3516 by I I dtonahr mbdm?nn M dl alhas. -4?~~~11~td~j~f7
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Dal io aNar rant of irodctll 4-6" damps they raot bdl toy ~ to settle nabadly a tacr~p l~tly III _ . (..,1~L - danGnq hoN ae aNh poor THE SIGNATURES AFflXED BELOW CERTIFt' 1HAT THIS SHEEt HAS BEEN REVIEWED AND APPROVED SOIEI'C , .:.k_ .
>i - '~}.III Sat Ddl a mot to t e~Gk~g ti Extend etd~ao inio sal PER THE CERTIFICATIONS SIGNED ON THE COVER SHEET OF THESE CONSTRUCflON PLANS. ~ '"'+dddl t~
AUG 15, 2010
CM -ENGINEERING DATE PUBLIC WORKS -ENV. >~ZOrRAMS DATE
CM - TRANSPORt'AT1ON DATE PLANNING DATE
_2 ~ CM • BUILDING INSPEC11ONS DATE PLr11dNING -TRANSPORTATION DATE
PUBLIC WORKS - WATERlSEWER DATE FIRE DATE O 20 AQ 80
PUBLIC WORKS - ELECTRIC DATE PARKS, RECREATION CULTURAL RES. DATE
LA-. 2
PUBLIC WOW -5 ffi E DATE GRAPHIC SCALE
0908-M