20140843 Ver 1_Final Storm Water Revised May 2015_20150514

Strickland, Bev
From: Devane, Boyd
Sent: Thursday, May 28, 2015 4:29 PM
To: Strickland, Bev
Subject: FW: Jule Noland Phase 2 Revised plan #2014 -0843
Attachments: Final Storm Water Revised May 2015.pdf, Phase 2 Revision May 2015 Operation and
Maintenance Bioretention.pdf, Phase 2 Revision May 2015 BMP Supplemental
Forms.pdf
Please file this note and the attachments. Thanks
From: Wanda Austin [mai Ito: wa ndajoycea usti n(d)a ma il.com]
Sent: Thursday, May 14, 2015 12:26 PM
To: Higgins, Karen; Devane, Boyd; Davidson, Landon; rlmclean3Ca)aol.com; Caroline -A- Contracting
Subject: Jule Noland Phase 2 Revised plan
Good afternoon. The revised stormwater plan is attached along with the operation & maintenance agreement
for the two new bioretention cells and the revised supplemental spreadsheets. I did not include the operation
and maintenance agreement for the dry retention basins for drainage area 2 & 3. This agreement did not
change. I will forward the WAM under a separate email. This document includes the wetland report conducted
by Altamont and the soils information. Please do not hesitate to contact me if you need any additional
information.
Thank you.
Wanda Austin

DocuSign Envelope ID: 2DDB09C2 -OBOE- 495E- ACE6- 5F22D48F4AC3
GENERAL NOTES:
1. Storm Water control shall control a minimum calculated volume
as described in table below.
2. Prjeeat-f- concrete drainage structures may be used.
3. Draw down time is 3 da s,
4. SHWT used on coresaken by Altamont Envi onmental, Inc.
and included in__±he/�eport dated February 11f, 2014. Cores
indicate SHWT is at elevation 2574.5 in the north section of
drainage area #2 and 2575 in the north section of drainage
area #3. No cores were taken in the remaining drainage
areas in the southern portion of the property, A SHWT ❑F
2575 is used for all drainage areas.
I\
IMPERVI ❑US AREA
LOCATION
AREA (SFT)
TOTAL AREA
392,040
ON -SITE
BUILDINGS
40,000
0.99
PARKING
86,700
#2
ON -SITE
STREETS
9,631
3779
ON -SITE OTHER
20092
0.79
TOTAL
156,423
407
FUTURE
17433M
#5W
* FUTURE AREA NOT INCLUDED IN THE IMPERVIOUS CALCULATIONS
DRAINAGE AREA CALCULATI ❑NS
DRAINAGE AREA
NUMBER
TOTAL AREA,
ACRES
IMPERVIOUS
AREA, ACRES
RUNOFF
VOLUME, CF
#1
0.99
0.84
3066
#2
1.20
1.09
3779
#3
0.86
0.79
2737
#4
1.07
0.75
2644
#5W
0.75
0.40
1462
■ STORM WATER SHALL BE ADDRESSED WHEN THE OUTPARCEL
(DRAINAGE AREA N5) IS DEVELOPED.
RACKLEY
DB 828i
I/
RHODES
DB 814/PG 2303
eJ �
DAM ❑UR
DB 396/PG 762
20' SEWER EAS
18' WALKING TRAIL
BASIN MAINTENANC
HAYW❑ ❑D RENTALS
DB 484/PG 2250
�s
1g
64' X 22' X 5'11' STR
PLATE ARCH CULVERT
10' PROPERTY
SETBACK
UTILITY EASEMENT
2576
WAYNESVILLE CHRISTIAN
FELLOWSHIP
DB 335/PG 682
CURB TO EXISTING GROUND
LAKE JUNALUSKA
ASSEMBLY
w
A
Z
PROPERTY Q
i
X w
US 276 RUSS AVE TO
L❑CATI ❑N
LEGEND
TEMP SEDIMENT TRAP
12-1-14 evlse
WITH BAFFLES
storm water
EXISTING CULVERT
— — — —
ISTURBED AREA
� jTl%17
D
DRAIN
CD
LT FENCE
NEW NTOURS
290"
EXISTING CONTOUR
—
PROPERTY LINE
TT
l9
AXIS G SEEDED
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AREA
0
FLOW DIRECTI ❑N
ON
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CONSTRUCTION
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SKIMMER BASIN
WITH BAFFLES
TEMPORARY DIVERSI ❑N
HANDICAP PARKING SPACE
TRAFFIC FLOW DIRECTI ❑N �Q
LAKE JUNALUSKA
ASSEMBLY
DB 640 /PG 654
SENI ❑R RESIDENCES AT
\ LAKE JUNALUSKA
DDB 660-/P G 280
0 20 40 60 80 100
SW 1
12-1-14 evlse
storm water
5 -11 -15 Revise
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COUNTY: HAYW❑ ❑D
❑WNSHIP:
AYNESVILLE
WATERSHED:
FRENCH BROAD
SCALE:
1' -50'

DocuSign Envelope ID: 2DDB09C2 -OBOE- 495E- ACE6- 5F22D48F4AC3
STORM WATER MEASURES DRAINAGE AREA #1
BI❑RETENTI ❑N
WITH EMERGENCY OVERFLOW STRUCTURE TO
LEVEL SPREADER /VEGETATIVE FILTER STRIP
PROPOSED
15' CULVERT
INV IN 2577,44'
INV OUT 2577,34'
DRAINAGE AREA #2
1.20 ACRES
C =0,95
R LINE
WATER 3'X3 BOX'
TOP EL 2580'
BOTTOM EL 2577'
STORM WATER
BASIN #2
TAIL
1
DISSIPATOR
It
M WATER
STORM WATER MEASURES DRAINAGE AREA #2
DRY DETENTI ❑N BASIN
BASIN TOP ELEVATI ❑N 2581
BASIN BOTTOM ELEVATI ❑N 2579
ORIFICE ELEVATI ❑N 2579
PERMANENT POOL BOTTOM ELEV 2578,5
EMERGENCY OVERFLOW ELEV 2580
NATURAL CONVEYANCE
OUTLET TO CONNECT TO 24' CULVERT AND SHEET
FLOW ACROSS WETLAND
DISCHARGE INTO THE WETLAND USED FOR
ST❑RMWATER CREDIT AS WELL AS A MEANS OF
SUSTAINING THE VITALITY OF THE WETLAND
DRY `DETENTI ❑N BASIN `� v
BASIN TOP ELEVATI ❑N 2581
BASIN BOTTOM ELEVATI ❑N 2579
ORIFICE ELEVATI ❑N 2579
PERMANENT POOL BOTTOM ELEV 2578.5
EMERGENCY OVERFLOW ELEV 2580
NATURAL CONVEYANCE
OUTLET TO CONNECT TO 24' CULVERT AND
SHEET FLOW ACROSS WETLAND
DISCHARGE INTO THE WETLAND USED FOR
ST❑RMWATER CREDIT AS WELL AS A MEANS OF
SUSTAINING THE VITALITY OF THE WETLAND
GENERAL NOTES,
USE CLASS 'B' CONCRETE THROUGHOUT
PROVIDE ALL CATCH BASINS OVER 3' -6' IN
DEPTH WITH STEPS 12' ON CENTER
FOR 8' -0' IN HEIGHT OR LESS USE 6" WALLS
AND BOTTOM SLAB. OVER 8' -0' TO 16' -0' IN
HEIGHT USE 8' WALLS AND BOTTOM SLAB.
ADJUST QUANTITIES ACCORDINGLY,
1
0.'
3,0
101110MMI»r:1111
0.5
—1,25 INCH ORIFICE
Bioretention Notes:
1, Soil media shall be uniform and free of stones,
2, Test the media after placement for the actual
drainage rate,
The soil media should be as follows:
Mix: 85 -88% Sand
8 -12% Fines
3 -5% Organic
3. Cover the area with Fescue or Bluegrass sod,
4. Use only triple shredded hardwood mulch,
5. Phophorus Indes (P Index) of soil media shall be
between 10 -30, P -Index = 10 recommended,
6. Soil infiltration rate shall be 0,75 in /hr,
STING GROUND
STORM WATER MEASURE DRAINAGE AREA #4
BI❑RETENTI ❑N WITH EMERGENCY OVERFLOW LEVEL
SPREADER/ VEGETATIVE FILTER STRIP
a 0.5
EXISTING GROUND 42°
CURB TRANSITI ❑N DETAIL
EMERGENCY OVERFLOW
15.00 OUTLET
TOP ELEV 25815 -
0;5 n
EMERGENCY OVERFLOW -OJT
ELEV 2581,0 j • 0 25 J • d
° 4.25
BOTTOM ELEV 2577,25 1
PR ❑FILE VIEW
OVERFLOW STRUCTURE
DRAINAGE AREA #1
OVERFLOW
�2.0
0,5
PERMANENT POOL
BASIN WIDTH VARIES
3,0
1
BASIN CROSS SECTI ❑N DETAIL
20.00
ELEVATI ❑N VIEW
FLOW FROM DRAINAGE AREA
15' OUTLET PIPE TO
LEVEL SPREADER
GRAVEL
3r1
—5' FESCUE OR BLUEGRASS SOD
8' #57 STONE
15" OUTLET CULVERT
9' P❑NDING
2' FILL S ❑IL MEDIA
I,D, /6 MIS
NOT LESS THAN 6'
T^ FILL
I.D. /6 MIN.
NOT LESS THAN 6'
h' PER FOOT
BUT NOT LESS THAN 12'
NOR MORE THAN 24'
UNSUITABLE MATERIAL F❑UNDATI ❑N
NORMAL EARTH F❑UNDATI ❑N
GROUND LINE
1PACT AFTER
E IS PLACED
'RI ❑R TO
aCEMENT OF FILL
T ^^ FILL
GROUND LINE
1PACT AFTER
E IS PLACED
'RI ❑R TO
aCEMENT OF FILL
- Nr�TNP'FRTNr; PARRTr
GENERAL NOTES:
I.D. = THE MAXIMUM HORIZONTAL INSIDE DIAMETER DIMENSI ❑N
O.D. = THE MAXIMUM HORIZONTAL OUTSIDE DIAMETER DIMENSI ❑N
H = THE FILL HEIGHT MEASURED VERTICALLY AT ANY POINT
ALONG THE PIPE FROM THE TOP OF THE PIPE TO THE TOP
OF THE EMBANKMENT AT THAT POINT,
D❑ NOT OPERATE HEAVY EQUIPMENT OVER ANY PIPE CULVERT
UNTIL THE PIPE CULVERT HAS BEEN PROPERLY BACKFILLED AND
COVERED WITH AT LEAST 3 FEET OF APPROVED MATERIAL.
LOOSELY PLACED SELECT MATERIAL CLASS III OR CLASS II, TYPE 1
FOR PIPE BEDDING, LEAVE SECTI ❑N DIRECTLY BENEATH PIPE
UNC❑MPACTED AS PIPE SEATING AND BACKFILL WILL ACCOMPLISH
C❑MPACTI ❑N,
----- - - - - -- SPRINGLINE OF PIPE
SELECT BACKFILL MATERIAL CLASS III OR CLASS II, BELOW
Ej SPRINGLINE
® APPROVED SUITABLE LOCAL MATERIAL ABOVE SPRINGLINE
0 UNDISTURBED EARTH MATERIAL
SELECT MATERIAL CLASS V OR VI FOR F❑UNDATI ❑N CONDITIONING,
ENCAPSULATE WITH ENGINEERING FABRIC
-4' HARDWOOD MULCH
TER FABRIC
BI❑RETENTI ❑N CROSS SECTI ❑N
EXISTING GROUND ELEV
AS REQUIRED ❑N PLAN
SW 2
12 -1 -14 Revise
10yr
- - evlse
Drainage
5 mi n
Outlet
Area
C
A (acres)
I (in /hr)
Q (cfs)
V (fps)
SEAL
1
0.95
0.99
6.56
6.2
5.0
15" outlet
2 & 3
0.95
2.06
6.56
1 12.8
1 4.1
24" outlet
EXISTING GROUND ELEV
AS REQUIRED ❑N PLAN
SW 2
12 -1 -14 Revise
storm water
- - evlse
SEAL
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COUNTY: HAYW❑ ❑D
❑WNSHIP:
AYNESVILLE
WATERSHED:
FRENCH BROAD
SCALE:
INSERTS: 1' =30'

DocuSign Envelope ID: 2DDB09C2 -OBOE- 495E- ACE6- 5F22D48F4AC3
OVERFLOW ELEVATION
ECEIVING ELEVATION
/o2 IL
�� L ly C�Pj�_qbq'Ldo If
0b b b ° / / ❑�/ �/
dT u
i�
�� ir���G�����
THICKNESS C'd') = 1.5 X MAX ROCK DIAMETER - 6" MIN
SECTIUC U U
dl� � � P mv
�� � 1 10
ROCK d50
50% SHALL_ BE LARGER THAN
0 0 6" MIS NN DIA "5u X
:50 86JD_P16TC V-
00 �810% � �D cc co cbC�bf
�810 10 vv
OS X D MI La-6 x D MIN -
A� �A
CCUC
NOTES
1. La = LENGTH OF APRON DISTANCE La SHALL BE OF SUFFICIENT LENGTH TO DISSIPATE
ENERGY
2. APRON SHALL BE SET AT ZERO GRADE AND ALIGNED STRAIGHT
3. FILTER MATERIAL SHALL BE FILTER FABRIC OR 6" THICK MINIMUM GRADED GRAVEL LAYER
ENERGY DISSIPATER AT PIPE OUTLET
WUSE WITH BASIN #1, #2 & #3
PIPE
CULVERT SIZE
15
18
24
30
(IN)
C
6,00
3
8,00
APRON WIDTH
s o
6 o
1200
Io
(FT)
0.35
0.107
e
0.032
APRON LENGTH
Tso
9
12
is
(FT)
0.35
0.107
0.75
0.028
RIP RAP STONE
6
6
6
6
THICKNESS (IN)
2
0.95
0.107
1.2
SYNTHETIC
4
6
10
16
FILTER
4
0.95
0.107
1.07
BLANKET CSY>
5
0.95
0.107
0.75
0.076
Z
o W 1;4- A I-
rLD I Z
H
`D Q LLi
J J
L A J
oz��0��
WEIR LENGTH
DRAINAGE AREA
WEIR CCCCTH
(ACRES)
(FT)
1
4,00
C
6,00
3
8,00
4
1000
C
1200
0.045
3
SEDIMENT CONTRA
STONE
_000
12,
TRUCTURAL STONE
8"
C❑❑ ❑ VIEW
TRUCTURAL STONE OVERFILL G"
FOR SETTLEMENT
SP,
MAX FILL
WEIR LENGT +
PLUS 5 FEET
OR POOR DEFINED CHANNELS
WUSE WITH BASIN #4
C❑❑❑ ❑❑TI❑❑
❑C❑❑ W❑❑
AX
EMERGENCY BY -PASS 6
SETTLED TOP OF BAI
ATURAL GROUND
LEVEL SPREADER DETAIL
-7.5
FtSLIINL) WALE
-FROM BMP
I•
LENERGY
DISSIPATER
VEGETATIVE FILTER STRIP /LEVEL
SPREADER CROSS SECTI ❑N
GABION BASKET WALL
Description
Construct a gabion basket wall to the dimensions shown on the
plans.
Materials
Galvanized steel baskets ASTM standard A1057/A1057M
Washed Stone ASTM C615/C615M
Rip Rap ASTM C615/C615M
Construction Methods
Grade a 5' wide area for the foundation stone. Place 6 -8" of
washed stone as the wall foundation. Construct baskets to a
dimension of 4 feet wide by 5 feet deep by the specified length.
Fill baskets with 6" nominal size rip rap; arranging the rip rap to
minimize voids. Secure the baskets with galvanized steel wire.
Stack baskets to the specified height offsetting each subsequent
row by 1 Y2 '. Backfill with 6" of stone.
Peak Flow Calculations
1 year 24 hour storm
Q =C )KI )KA
Drainage
Area
C
I (in /hr)
A (acres)
Q
Pre Development
1
0.35
0.107
0.99
0.037
2
0.35
0.107
1.2
0.045
3
0.35
0.107
486
0.032
4
0.35
0.107
1.07
0.040
5
0.35
0.107
0.75
0.028
Post Development
1
0.95
0.107
0.99
0.101
2
0.95
0.107
1.2
0.122
3
0.95
0.107
0.86
0.087
4
0.95
0.107
1.07
0.109
5
0.95
0.107
0.75
0.076
Runoff Volume Calculations:
Rv= 0,05 +0,9 )KIa
V= 3630wRdwRvwA
Dry Detention Basins
NOTES:
1. THE T ❑PS ❑IL IN THE VEGETATIVE FILTER STRIP MUST BE
AMENDED WITH LIME AND ORGANIC MATTER, SELECT GRASSES
FROM STABILIZATI ❑N TABLE ON SHEET SW -3,
2. ENERGY DISSIPATER AT BASIN #1 IS OVERSIZED TO
UNIFORMLY CONNECT TO LEVEL SPREADER,
3. PR ❑VIDE AN IMPERVI ❑US FILTER BARRIER UNDER BASINS
WHERE THE SHWT IS WITHIN 2 FEET OF THE BOTTOM
ELEVATI ❑N,
Stage Storage Volume Calculation Table
Drainage Area
Elevation
Surface Area (sf)
Incremental Volume (cf)
Cumulative Volume (cf)
1
less than 2580
operating volume
0
0
Drainage
2580
4093
0
0
Sediment
2581
5111
4602
4602
Rv
over 2581
freeboard
0
4602
Drainage Area
Elevation
Surface Area (sf)
Incremental Volume (cf)
Cumulative Volume (cf)
2
less than 2579
operating volume
0
0
Drainage
2579
1456
0
0
Sediment
2580
2558
2007
2007
Rv
2581
3986
3272
5279
needed
over 2581
freeboard
0
5279
Drainage Area
Elevation
Surface Area (sf)
Incremental Volume (cf)
Cumulative Volume (cf)
3
less than 2579
operating volume
0
0
Drainage
2579
1175
0
0
Sediment
2580
2437
1806
1806
Rv
2581
4167
3302
5108
needed
over 2581
freeboard
0
5108
Drainage Area
Elevation
Surface Area (sf)
Incremental Volume (cf)
Cumulative Volume (cf)
4
less than 2581
operating volume
0
0
Drainage
2581
3626
0
0
Sediment
2582
4472
4049
4049
Rv
2583
5390
4931
8980
needed
over 2583
freeboard
0
8980
Bioretention
May 1 - September 1
100# Tall Fescue
100# Tall Fescue
15# Kentucky Bluegrass
15# Kentucky Bluegrass
25%
Required
25# Rye Grain
Drainage
Drainage
3.33
500# Fertilizer
500# Fertilizer
4000# Limestone
Sediment
V (cu ft)
V (cu ft)
Area
la
Rv
Rd
A (acres)
V (cu ft)
Storage
needed
provided
2
0.91
0.87
1
1.2
3779
945
4724
5279
3
0.92
0.88
1
0.86
2737
684
3421
5108
Bioretention
NEsoil type DsC, Dil(sboro Loam
Emergency Outlet Q
Q= Cw )KL )KH ^1.5
Stabilization Reauirements:
Stabilization for this project shall comply with the time frame guidelines as
specified by the NCG- 010000 general construction permit effective August 3,
2011 issued by the North Carolina Department of Environment and Natural
Resources Division of Water Quality. Temporary or permanent ground cover
stabilization shall occur within 7 calendar days from the last land - disturbing
activity, with the following exceptions in which temporary or permanent ground
cover shall be provided in 14 calendar days from the last land - disturbing activity:
• Slopes between 2:1 and 3:1, with a slope length of 10 ft. or less
• Slopes 3:1 or flatter, with a slope of length of 50 ft. or less
• Slopes 4:1 or flatter
SEEDING AND MULCHING:
The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and
limestone, shall be as stated below. During periods of overlapping dates, the kind
of seed to be used shall be determined. All rates are in pounds per acre.
August 1 - June 1
May 1 - September 1
100# Tall Fescue
100# Tall Fescue
15# Kentucky Bluegrass
15# Kentucky Bluegrass
Ponding
Required
25# Rye Grain
10# German or Browntop
Drainage
3.33
500# Fertilizer
500# Fertilizer
4000# Limestone
4000# Limestone
Depth,
Surface
Ksat*
Drawdown
Area
la
Rv
Rd
A (acres)
V (cu ft)
inches
Area
(in /hr)
t (hours)
1
0.89
0.85
1
0.99
3066
9
4088
0.75
12
4
0.70
0.68
1
1.07
2644
9
3526
0.75
12
NEsoil type DsC, Dil(sboro Loam
Emergency Outlet Q
Q= Cw )KL )KH ^1.5
Stabilization Reauirements:
Stabilization for this project shall comply with the time frame guidelines as
specified by the NCG- 010000 general construction permit effective August 3,
2011 issued by the North Carolina Department of Environment and Natural
Resources Division of Water Quality. Temporary or permanent ground cover
stabilization shall occur within 7 calendar days from the last land - disturbing
activity, with the following exceptions in which temporary or permanent ground
cover shall be provided in 14 calendar days from the last land - disturbing activity:
• Slopes between 2:1 and 3:1, with a slope length of 10 ft. or less
• Slopes 3:1 or flatter, with a slope of length of 50 ft. or less
• Slopes 4:1 or flatter
SEEDING AND MULCHING:
The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and
limestone, shall be as stated below. During periods of overlapping dates, the kind
of seed to be used shall be determined. All rates are in pounds per acre.
August 1 - June 1
May 1 - September 1
100# Tall Fescue
100# Tall Fescue
15# Kentucky Bluegrass
15# Kentucky Bluegrass
30# Hard Fescue
30# Hard Fescue
25# Rye Grain
10# German or Browntop
Millet
3.33
500# Fertilizer
500# Fertilizer
4000# Limestone
4000# Limestone
Approved Tall Fescue Cultivars
2nd Millennium; Duster; Magellan; Rendition; Avenger; Endeavor; Masterpiece;
Scorpion; Barlexas; Escalade; Matador; Shelby; Barlexas II; Falcon II, III, IV &
V; Matador GT; Signia Barrera; Fidelity; Millennium; Silverstar; Barrington;
Finesse II; Montauk; Southern Choice II; Biltmore; Firebird; Mustang 3; Stetson;
Bingo; Focus; Olympic Gold; Tarheel; Bravo; Grande II; Padre; Titan Ltd;
Cayenne; Greenkeeper; Paraiso; Titanium; Chapel Hill; Greystone; Picasso;
Tomahawk; Chesapeake; Inferno; Piedmont; Tacer; Constitution; Justice; Pure
Gold; Trooper; Chipper; Jaguar 3; Prospect; Turbo Coronado; Kalahari; Quest;
Ultimate; Coyote; Kentucky 31; Rebel Exeda; Watchdog; Davinci; Kitty Hawk;
Rebel Sentry; Wolfpack; Dynasty; Kitty Hawk 2000; Regiment II; Dominion;
Lexington; Rembrandt
Approved Kentucky Bluegrass Cultivars:
Alpine; Bariris; Envicta; Rugby; Apollo; Bedazzled; Impact; Rugby II; Arcadia;
Bordeaux; Kenblue; Showcase; Arrow; Champagne; Midnight; Sonoma; Award;
Chicago II; Midnight II
Approved Hard Fescue Cultivars:
Chariot; Nordic; Rhino; Warwick; Firefly, Oxford, Scaldis II; Heron; Reliant II;
Spartan II; Minotaur; Reliant IV; Stonehenge
Fertilizer shall be 10 -20 -20 analysis. A different analysis of fertilizer may be
used provided the 1 -2 -2 ratio is maintained and the rate of application adjusted to
provide the same amount of plant food as a 10 -20 -20 analysis and as directed.
TEMPORARY SEEDING:
Fertilizer shall be the same analysis as specified for Seeding and Mulching and
applied at the rate of 400 pounds and seeded at the rate of 50 pounds per acre.
German Millet, or Browntop Millet shall be used in summer months and rye grain
during the remainder of the year. The Engineer will determine the exact dates for
using each kind of seed.
FERTILIZER TOPDRESSING:
Fertilizer used for topdressing shall be 16 -8 -8 grade and shall be applied at the
rate of 500 pounds per acre. A different analysis of fertilizer may be used
provided the 2 -1 -1 ratio is maintained and the rate of application adjusted to
provide the same amount of plant food as 16 -8 -8 analysis and as directed.
SUPPLEMENTAL SEEDING:
The kinds of seed and proportions shall be the same as specified for Seeding and
Mulching, and the rate of application may vary from 25# to 75# per acre. The
actual rate per acre will be determined prior to the time of topdressing and the
Contractor will be notified in writing of the rate per acre, total quantity needed,
and areas on which to apply the supplemental seed. Minimum tillage equipment,
consisting of a sod seeder shall be used for incorporating seed into the soil as to
prevent disturbance of existing vegetation. A clodbuster (ball and chain) may be
used where degree of slope prevents the use of a sod seeder.
MOWING:
The minimum mowing height on this project shall be six inches.
3'x3' box
Cw
L crest
H (ft)
Q (cfs)
3.33
8
0.3
4.4
Overflow Structure
12" ABC
3.33
15
0.25
6.2
Orifice Outlet Drawdown Time
1.25 "diameter orifice
Q= CdwAwsgrt(2wgwH)
cENTER OF
ROADWAY
9' 9
PARKING PARKING
LOTInTft LOT
77
AO ® 4 u /
0
STATI ❑NS 0 +00 TO 2 +00
CENTER OF
ROADWAY
S' 2.5'
�n�xt
NATURAL
4' GROUND /GRASS
5'
© A ® O O
GRASS
SHOULDER
STATI ❑NS 2 +00 TO 4 +75
CENTER OF
ROADWAY
9' 9'
GRASS GRASS
SHOULDER
SHOULDER
?� mTPt d
O ® O u/
i�
STATI ❑NS 4 +75 TO 6 +70
ROADWAY SCHEDULE
U EXISTING GROUND
A 3" SF 9SB
C GABION BASKET WALL
B 8' 1-19 ON
CONSTRUCTION SCHEDULE
1. Obtain Erosion Control Permit and other applicable permits prior to the start of grading.
2. Install rain gauge in an accessible area. Dedicate a log book to record rain events and weekly inspections.
3. Maintain the temporary gravel construction entrance from phase I.
4. Stake area around remaining wetland for perimeter protection fence.
3. Manually install a perimeter protection fence around the delineated wetland. No equipment is allowed
within the wetland boundary that is not to be disturbed.
4. Install silt fence at all locations shown on plan sheet. Silt fence shall be manually installed along the
outside of the 10 foot wetland buffer.
5. Layout the areas for the construction of the temporary skimmer basins.
6. Construct the temporary skimmer basins to the appropriate dimensions. Construct the baffles in the
temporary skimmer basins.
7. Establish temporary cover according to stabilization table schedule and the seeding schedule on ECP 2.
8. Seed, fertilize and mulch all exposed areas using the seeding schedule included on ECP2, adjusting to the
schedule for the season. All disturbed areas should be treated with ground cover within 7 to 14 calendar
days of completion of grading activities according to the stabilization table on ECP 2.
9. Once grading is complete, install temporary silt fence around permanent drainage easement.
10. Stabilize drainage area #2 and #3 prior to construction of the dry detention basin. Construct storm
water basins and outlet structures.
11. Seed and fertilize areas. Stabilize drainage area #1 and #4 prior to construction of the bioretention cell.
12. Construct bioretention cell. Cover with sod as specified.
13. Re -seed and fertilize areas as needed.
14. Once vegetation has been established, remove all temporary erosion control devices.
OVERFLOW DITCH
Use with Drainage Area #4
t
110
I_
SW 3
Basin
Orifice
Drainage
Area, A
➢
12" ABC
Area, a
Drawdown
Area
(sf)
c
g (fps)
(sf)
K
, t (days)
2
3986
0.6
32.2
0.008518
1.02893E -05
3.1
3
4167
0.6
32.2
0.008518
9.84233E -06
3.3
cENTER OF
ROADWAY
9' 9
PARKING PARKING
LOTInTft LOT
77
AO ® 4 u /
0
STATI ❑NS 0 +00 TO 2 +00
CENTER OF
ROADWAY
S' 2.5'
�n�xt
NATURAL
4' GROUND /GRASS
5'
© A ® O O
GRASS
SHOULDER
STATI ❑NS 2 +00 TO 4 +75
CENTER OF
ROADWAY
9' 9'
GRASS GRASS
SHOULDER
SHOULDER
?� mTPt d
O ® O u/
i�
STATI ❑NS 4 +75 TO 6 +70
ROADWAY SCHEDULE
U EXISTING GROUND
A 3" SF 9SB
C GABION BASKET WALL
B 8' 1-19 ON
CONSTRUCTION SCHEDULE
1. Obtain Erosion Control Permit and other applicable permits prior to the start of grading.
2. Install rain gauge in an accessible area. Dedicate a log book to record rain events and weekly inspections.
3. Maintain the temporary gravel construction entrance from phase I.
4. Stake area around remaining wetland for perimeter protection fence.
3. Manually install a perimeter protection fence around the delineated wetland. No equipment is allowed
within the wetland boundary that is not to be disturbed.
4. Install silt fence at all locations shown on plan sheet. Silt fence shall be manually installed along the
outside of the 10 foot wetland buffer.
5. Layout the areas for the construction of the temporary skimmer basins.
6. Construct the temporary skimmer basins to the appropriate dimensions. Construct the baffles in the
temporary skimmer basins.
7. Establish temporary cover according to stabilization table schedule and the seeding schedule on ECP 2.
8. Seed, fertilize and mulch all exposed areas using the seeding schedule included on ECP2, adjusting to the
schedule for the season. All disturbed areas should be treated with ground cover within 7 to 14 calendar
days of completion of grading activities according to the stabilization table on ECP 2.
9. Once grading is complete, install temporary silt fence around permanent drainage easement.
10. Stabilize drainage area #2 and #3 prior to construction of the dry detention basin. Construct storm
water basins and outlet structures.
11. Seed and fertilize areas. Stabilize drainage area #1 and #4 prior to construction of the bioretention cell.
12. Construct bioretention cell. Cover with sod as specified.
13. Re -seed and fertilize areas as needed.
14. Once vegetation has been established, remove all temporary erosion control devices.
OVERFLOW DITCH
Use with Drainage Area #4
t
110
I_
SW 3
➢
12" ABC
cENTER OF
ROADWAY
9' 9
PARKING PARKING
LOTInTft LOT
77
AO ® 4 u /
0
STATI ❑NS 0 +00 TO 2 +00
CENTER OF
ROADWAY
S' 2.5'
�n�xt
NATURAL
4' GROUND /GRASS
5'
© A ® O O
GRASS
SHOULDER
STATI ❑NS 2 +00 TO 4 +75
CENTER OF
ROADWAY
9' 9'
GRASS GRASS
SHOULDER
SHOULDER
?� mTPt d
O ® O u/
i�
STATI ❑NS 4 +75 TO 6 +70
ROADWAY SCHEDULE
U EXISTING GROUND
A 3" SF 9SB
C GABION BASKET WALL
B 8' 1-19 ON
CONSTRUCTION SCHEDULE
1. Obtain Erosion Control Permit and other applicable permits prior to the start of grading.
2. Install rain gauge in an accessible area. Dedicate a log book to record rain events and weekly inspections.
3. Maintain the temporary gravel construction entrance from phase I.
4. Stake area around remaining wetland for perimeter protection fence.
3. Manually install a perimeter protection fence around the delineated wetland. No equipment is allowed
within the wetland boundary that is not to be disturbed.
4. Install silt fence at all locations shown on plan sheet. Silt fence shall be manually installed along the
outside of the 10 foot wetland buffer.
5. Layout the areas for the construction of the temporary skimmer basins.
6. Construct the temporary skimmer basins to the appropriate dimensions. Construct the baffles in the
temporary skimmer basins.
7. Establish temporary cover according to stabilization table schedule and the seeding schedule on ECP 2.
8. Seed, fertilize and mulch all exposed areas using the seeding schedule included on ECP2, adjusting to the
schedule for the season. All disturbed areas should be treated with ground cover within 7 to 14 calendar
days of completion of grading activities according to the stabilization table on ECP 2.
9. Once grading is complete, install temporary silt fence around permanent drainage easement.
10. Stabilize drainage area #2 and #3 prior to construction of the dry detention basin. Construct storm
water basins and outlet structures.
11. Seed and fertilize areas. Stabilize drainage area #1 and #4 prior to construction of the bioretention cell.
12. Construct bioretention cell. Cover with sod as specified.
13. Re -seed and fertilize areas as needed.
14. Once vegetation has been established, remove all temporary erosion control devices.
OVERFLOW DITCH
Use with Drainage Area #4
t
110
I_
SW 3
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COUNTY: HAYW❑ ❑D
❑WNSHIP:
AYNESVILLE
WATERSHED:
FRENCH BROAD
SCALE:
INSERTS: 1' =30'