20061651 Ver 2_Constructed Wetland Detail Map_20070306

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5.0
Riser Wall Thickness in :
5
Pond Bottom Elevation (ft).
437.00
Riser Crest Elevation (ft):
441.50
Dens' of Riser Matt Ib/
150.00
Pi a Inside Diameter On):
36
Pipe Wall Thickness (in):
4
Length of Pipe Ex sed ft :
15.00
Density H2O (lb/ :
Volume H2O Displaced b Riser .
62.40
Weight H2O Dis laced b Riser lb :
7504.48
Volume H2O Displaced by Pi
158.39
Wei ht H2O Displaced by Pi (lb):
9883.45
Total Uplift Force 00
17387.93
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Weight of Riser 0b):
4786.02
Weight of Pi lb :
7853,98
Pi e/Riser Downward Force Ib :
12640.00
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HIGHLAND MANOR Aprs INC.
PIN: 0764 -10 -0220
ALL PROJECTS SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE TOWN OF CARY DESIGN GUIDELINES MANUAL. A COPY OF THIS DOCUMENT IS AVAILABLE ON THE TOWNS WEB SITE.
EMERGENCY SPILLWAY II
ELEV. = 443.75 ' ' ' ( SEE CROSS / SEC I ON,Y ' /' r 7 -'" i i COMPACTION NOTES:
zoNINO. RnnF ., @ --
� G r! r 1. EMBANKMENT FILL SHALL BE PLACED IN 8 INCH LOOSE LIFTS
00 ,' i' ,' aa��/ ,'r,,- r'r '� r l AND COMPACTED TO AT LEAST 95% OF THE STANDARD PROCTOR
USE. GARDEN APrs r / f / 445 _� _-- -- _ MAXIMUM DRY DENSITY.
' r' •r '' r �/' -''� (� 2. FILL AND BACKF I LL PLACED AGAINST ALL STRUCTURES, CULVERTS
A_, - r v'�\ l (/� �' -- " J- 19 CONDUITS, DRAINS, ETC. SHALL BE PLACED IN 4 TO 6 INCH
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TOP OF WETLAND
ELEV. 444.00 --
EMERGENCY SPILLWAY
ELEV. = 443.75
(SEE CROSS SECTION)
INV. IN = (15" RCP) = 435.85'
7.25 LF 15" RCP TOP = 443.30'
INV. = 435.90'
10' PLASTIC SOLUTIONS. INC.
PYD 60 (OR APPROVED EQUAL)
Q L/CCr" nHanGw a I tim- --
CONSTRUCTED WETLAND
OUTLET STRUCTURE
"WET" BASIN
1 -YR. MAX WSE = 441-87
10 -YR. MAX. WSE = 442.49
100 -YR. MAX WSE = 443.00 (1.0+ FREEBOARD)
2" FAIRCLOTH SKIMMER
OR EQUAL, ATTACHED
DURING CONSTRUCTION.
GATE VALVE OPEN DURING
CONSTRUCTION.
BOUYANCY CALCULATIONS FOR RISERIBARREL
West Chatham Townhomes
Riser Inside Diameter ft :
5.0
Riser Wall Thickness in :
5
Pond Bottom Elevation (ft).
437.00
Riser Crest Elevation (ft):
441.50
Dens' of Riser Matt Ib/
150.00
Pi a Inside Diameter On):
36
Pipe Wall Thickness (in):
4
Length of Pipe Ex sed ft :
15.00
Density H2O (lb/ :
Volume H2O Displaced b Riser .
62.40
Weight H2O Dis laced b Riser lb :
7504.48
Volume H2O Displaced by Pi
158.39
Wei ht H2O Displaced by Pi (lb):
9883.45
Total Uplift Force 00
17387.93
a
�
Weight of Riser 0b):
4786.02
Weight of Pi lb :
7853,98
Pi e/Riser Downward Force Ib :
12640.00
Ballafet Cnnrmto-
Minimum Factor of Safety:
17
Eilred ballast thickness (in):
26.43
Provided Ballast Thickness (in):
30
Total Downward Force 00
20003.11
Provided Factor of Safety.
1.15
HUM
LIFTS AND COMPACTED USING HAND -HELD OF MANUALLY OPERATED
s
•EQUIPMENT AND COMPACTED TO 95% OF THE STANDARD PROCTOR
MAXIMUM DRY DENSITY.
3. THE BASIN INVERT AND EMBANKMENT SHALL BE SEEDED IN
ACCORDANCE WITH THE EROSION CONTROL PLAN AND THE PLANTING
PLAN BELOW WITHIN 15 DAYS OF COMPLETION OF GRADING WORK ON
THE BASIN.
4. THE WETLAND WILL BE USED FOR EROSION CONTROL DURING THE
ICONSTRUCTION PHASE OF THE PROJECT. THE BASIN SHALL BE CLEANED
OUT AND VEGETATION COVER SHALL BE ESTABLISHED PRIOR TO USE
v r r AS A CONSTRUCTED WETLAND.
-------- 5. REFER TO SEEDING SCHEDULE ON THIS SHEET FOR
-� STABILIZATION ABOVE EL 440.00.
6. SEDIMENT CLEANED OUT FROM THE CONSTRUCTED WETLAND SHALL
75 BE DISPOSED OF OFFSITE AT A LOCATION WITH ALL REQUIRED
- PERMITS.
---- - ------
WETLAND NOTES:
76 I. AREAS ABOVE EL. 440.00 SHALL BE SEEDED PER SEEDING
SCHEDULE ON THIS SHEET.
2. ALL AREAS BELOW EL. 442.00 SHALL HAVE 8" OF SCREENED
77 TOPSOIL SPREAD AND LIGHTLY COMPACTED TO ACHIEVE FINAL GRADE.
3. SOIL BELOW EL. 442 SHALL BE TESTED BY THE USDA
AGRICULTURAL EXTENSION OFFICE FOR pH: NUTRIENTS SUCH AS
NITROGEN, PHOSPHORUS, AND POTASSIUM: AND MINERALS SUCH AS
CHELATED IRON AND LIME. AMENDMENTS TO SOIL RECOMMENDED BY
/ I THE USDA SHALL BE INCORPORATED INTO SOIL TO PROMOTE VIGOROUS
78 VEGETATION AND PLANT GROWTH.
I4. NEWLY PLANTED TREES, SHRUBS. AND PLANTS SHALL BE WATERED
DAILY.
F 79
i
WETLAND LEGEND
✓,.-.� M I CROPOOL
(1,652 SF/ 14% OF SURFACE AREA)
�� . •
9 -18" MARSH AREAS
(4,339 SF/ 37% OF SURFACE AREA)
PLANT AND SOIL SUPPLIER LIST'
TREES. SHRUBS. AND PLANTS SCREENED TOPSOIL--AND
SOIL TREATMENTS
CILL IDE NATIVE PLANT NURSERY
621 STARBURST LANE TRIANGLE LANDSCAPE SUPPLIES
RALEIGH, NC 27603 10706 CHAPEL HILL ROAD
PH. (919) 302 -6900 MORRISVILLE. NC 27560
www. wet I andp I antnursery. com PH. ( 919) 460 --4410
CURE NURSERY
880 BUTEO ROAD
PITTSBORO, NC 27312
PH. (410) 542 -6186
www.curenursery.com
MORE SUPPLIERS AT:
http : / /h2o.enr. state .nc.us /nowetionds /planters.pdf
This list is not an endorsement of the above companies.
Contractor is not obligated to use the above companies: this list
is not exhaustive. Individual nurseries may not carry large
numbers of wetland plants. Attempts should be made to obtain
plants from an area as close as possible to the new planting
area.
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MAX. 3:1 SLOPE
INTERIOR FACE-
TOP OF WETLAND = 444.00
EMERGENCY SPILLWAY = 443.75
NTS
CROSS SECTION
NTS
EMERGENCY SPILLWAY SECTION
CONSTRUCTED WETLAND
CROSS SECTION
BOTTOM OF WETLAND 437.00
MAX. 3:1 SLOPE
rrr-i i r -i n
SEEDBED PREPARATION
1.'CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3 INCHES DEEP OVER ADVERSE
SOIL CONDITIONS, IF AVAILABLE.
2. RIP THE ENTIRE AREA TO 6 INCHES DEPTH.
3. REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE
REASONABLY SMOOTH AND UNIFORM.
4. APPLY AGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE UNIFORMLY
AND MIX WITH SOIL (SEE BELOW0.
5. CONTINUE TILLAGE UNTIL A WELL - PULVERIZED, FIRM, REASONABLY UNIFORM
SEEDBED IS PREPARED 4 TO 6 INCHES DEEP.
6. SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING
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EQUIPMENT OR CULTIPACK AFTER 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 POSSIBLE. IF STAND SHOULD BE OVER
60X DAMAGED, REESTABLISH FOLLOWING ORIGINAL LIME, FERTILIZER AND
SEEDING RATES.
9. CONSULT CONSERVATION INSPECTOR ON MAINTENANCE TREATMENT AND
FERTILIZATION AFTER PERMANENT COVER IS ESTABLISHED.
d
x APPLY: AGRICULTURAL LIMESTONE - 3 TONS /ACRE Z N
FERTILIZER - 10 - 10 - 10 ANALYSIS AT800 - 1,000 LBS. /ACRE
SUPERPHOSPHATE - 500 LBS./ACRE OF 20X ANALYSIS SUPERPHOSPHATE z N
MULCH - 2 TONS (APPROX. 80 BALES) SMALL GRAIN STRAW /ACRE O Z
ANCHOR - TACK WITH LIQUID ASPHALT AT 400 GALLONS /ACRE OR .-.
EMULSIFIED ASPHALT AT 300 GALLONS /ACRE.
CIO , VJ W
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SEEDING SCHEDULE W F v �•
MINIMUM REQUIREMENTS FOR SLOPE STABILIZATION z z Q
STABILIZED WITH GRASS 3:1 AND ,FLATTER W �■..o
STABILIZED WITH SHRUBS OR VINES 3.1 TO 21
STABILIZED WITH RIPRAP 2:11 TO 1.50
STABILIZED WITH RETAINING WALL STEEPER THAN 1.5:1 w�oc
DATE TYPE PLANTING RATE LU
AUG. 15 - NOV. 1 TALL FESCUE 300 LBS. /ACRE d
NOV. 1 - MAR. 1 TALL FESCUE 300 LBS. /ACRE 0 5 �
8 ABRUZZI RYE 25 LBS. /ACRE Z oio x
MAR, 1 - APR. 15 TALL FESCUE 300 LBS. /ACRE Cm
APR. 15 - JUN. 30 HULLED COMMON BERMUDAGRASS 25 LBS. /ACRE 0 < 0
JUL. 1 -- AUG. 15 TALL FESCUE AND 125 LBS. /ACRE 0
***BROWNTOP MILLET 35 LBS• /ACRE "
***OR SORGHUM- SUDAN HYBRIDS 30 LBS. /ACRE ... J
Z � � �
= a)
SLOPES (3 :1 TO 2 :1)
U1 0
... 06 aW
MAR. 1 JUN. 1 SERICEA LESPEDEZA (SCARIFIED) 50 LBS. /ACRE 4, o;
AND 0 V W ox. v>'
MAR. 1 - APR. 15 ADD TALL FESCUE 120 LBS. /ACRE In W .. CD MAR. 1 - JUN. 30 OR ADD WEEPING LOVEGRASS 10 LBS. /ACRE 40
MAR. 1 - JUN. 30 OR ADD HULLED COMMON BERMUDAGRASS 25 LBS. /ACRE
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JUN. 1 - SEP. 1 STALL FESCUE AND 120 LBS. /ACRE
BROWN MILLET 35 LBS. /ACRE
*OR SORGHUM- SUDAN HYBRIDS 30 LBS. /ACRE �-
SEP. 1 - MAR. 1 SERICEA LESPEDEZA (HULLED- UNSCARIFIED)70 LBS. /ACRE
AND TALL FESCUE 120 LBS. /ACRE
NOV. 1 - MAR. 1 ADD ABRUZZI RYE 25 LBS. /ACRE
CONSULT CONSERVATION ENGINEER OR SOIL CONSERVATION SERVICE FOR
ADDITIONAL INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF
DENUDED AREAS, THE ABOVE VEGETATION RATES ARE THOSE WHICH OD WELL UNDER
LOCAL CONDITIONS; OTHER SEEDING RATE COMBINATIONS ARE POSSIBLE.
x x x TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT
VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12" IN HEIGHT �C4.. Ch
BEFORE MOWING, OTHERWISE FESCUE MAY BE SHADED OUT. W
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PLANT LEGEND
WHITE ASH (FRAXINUS AMERICANA)
1" CALIPER. 6' TALI. @ 30' 0. C. FROM SWAMP ASH
AMERICAN HAZELNUT (CQRYLUS AMERICANA)
2 GALLON @ 10' O.C.
x SWAMP ASH (FRAXINUS PENNSYLVANICA)
1" CALIPER, 6' TALL @ 30' O.C. FROM WHITE ASH
RED MAPLE (ACER RUBRUM)
1" CALIPER. 6' TALL @ 30' O.C.
AMERICAN•BEAUTYBERRY (CALLICARPA AMERICANA)
4 GALLON @ 5' O.C.
b' ARROW ARUM (PELTANDRA VIRGINICA)
QUART PDT @ 12" O.C.
p COMMON CATTAIL (TYPHA LATIFOLIA)
QUART POT @ 18" O.C.
Q SPATTERDOCK (NUPHAR LUTEUM)
QUART POT @ 24" O.C.
06-SP-043
APPROVED
TOWN OF CARY
TOP OF WETLAND = 444.00'
Approved by Date
Planning Date
Engineering Date
GRASS LINED EMERGENCY SPILLWAY ='443-75
LINE WITH NORTH AMERICAN GREEN P300
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SCALE IN FEET
0 10 20 40 60 80
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