SW6100701_Landscapee Plan_20100819

5t"jc looti o /
STORMWATER WET DETENTION
LANDSCAPE PLAN
For:
HCC INVESTMENTS, LLC
"TRAEMOOR CONNECTION"
Cumberland County, North Carolina
DENR-FRO
JUN 16 2011 August 19, 2010
DWQ
Prepared By:
Hoch
ngineers,P.A.
Lnoch Lngineers, P.A.
1403 NC High« -a`- 50 South
Benson, North CaroEni 27504
Dv\n-PRO
NOV 16 2010
Do

LANDSCAPE PLAN
TABLE OF CONTENTS
SECTION PAGE
1.0
INTRODUCTION.....................................................................................................................1
2.0
SOU'- MEDIA ...................................... .... ............................ I ... .......................................... .... ......
2.1 Soil Analysis & Amendment.........................................................................................1
2.2 Soil Specifications...........................................................................................................1
3.0
HYDROLOGIC ZONES.........................................................................................................1
3.1 Shallow Water.................................................................................................................1
3.2 Shallow Land (wetland)....................................................................
3.3 Top of berm and slopes................................................................................................1
4.0
PLANT SELECTION............................................................................................ 2
4.1 Shallow Water Emergent Plants-- ................................................. ........ ........ ?
4.2 Shallow Land Herbaceous Plants.................................................................................2
4.3 Centipede.........................................................................................................................2
5.0
PLANT PLACEMENT.............................................................................................................2
5.1 Shallow Water.............................................................---......................-----.......................2
5.2 Shallow Land................................................................................................................... 2
6.0
PLANT SCHEDULE.................................................................................................................3
I

1.0 INTRODUCTION
North Carolina Department of Environment and Natural Resources (NCDENR) requires
implementing a Best. Management Practice (BM?) in accordance with the NC Division of Water
Quality (DWQ) BMP Manual Quly 2007) and NC Administrative Rules according to Water Quality
including Title 15A, North Carolina Administrative Code, Subchapter 21-1, Section .1000
"Stormwater Management" (1 5A NCAC 2H .1000).
2.0 SOIL MEDIA
The soil media is very important to the overall efficiency of the proposed wet detention basin.
Topsoil and subsoil will be removed during the construction of the system. It is recommended
that a layer of 2"-4" of topsoil be applied to the finished soil surface to aid in the establishment
of plantings.
2.1 Soil Analysis & Amendment
The nutrient status of the soil is essential in order to have a successful establishment of plant
species. It is recommended that a soil sample be collected after excavation, prior to planting in
order to allow time to ameliorate the soil where needed. It is recommended small amount of
fertilizer be used at or immediately before plant establishment.
2.2 Soil Specifications
The soil medium should be free of stones, large roots and any large debris that which could
interrupt proposed or anticipated grading and landscape planting schedules.
3.0 HYDROLOGIC ZONES
3.1 Shallow Water
The shallow water hydrologic zone includes all land (during drought)or water surface area between
the designed normal pool elevation inward the basin to a water depth of 6 inches below normal
pool elevation. The total area included in the shallow water zone is 12,880 square feet (0.3 acres)
including the forebay and main pool.
3.2 Shallow Land (wetland
The shallow land (wetland) hydrologic zone includes all land or water surface area between the
designed normal pool elevation outward the basin to a height of 12 inches above normal pool
elevation. The total area included in the shallow land is 17,326 square feet (0.4 acres) including the
forebay and main pool.
3.3 Top of berm and slopes
I.t is recommended a seed mix be used to stabilize soil after finish grade. Once established it is
recommended planting centipede grass as fnushed sod on top of berm, side slopes and foot slopes.

4.0 PLANT SELECTION
4.1 Shallow Water Emergent Plants
Botanical Name
Common Name
Juncos ffurus
Softrush
Plantago major
Common Plantain
Sagittaria lancifolia
Builtongue
Zi:Zaneopsis miliacea
Water millet
4.2 Shallow Land Herbaceous Plants
Botanical Name
Common Name
Asclepias incarnate
Swamp milkweed
Carrx vulpinoidea
Fox sedge
Juncos �usus
Softrush
Eupalorium f lulosum
Joe Pye weed
I
4.3 Centipede
Centipede is an acid loving grass, which fortunately should do well at this site. Centipede is best
planted in late spring, early summer when soil temperatures are 70 degrees or more and all danger
of frost and freezing is over.
5.0 PLANT PLACEMENT
5.1 Shallow Water
Plants will be placed 1 bare root plant per 4 square feet of shallow water in both forebay and
main pool areas. The total number of shallow water emergent vegetation to be planted is 3220
plants.
5.2 Shallow Land
Plants will be placed 1 bare root plant per 4 square feet of shallow land in both forebay and
main pool areas. The total number of shallow land herbaceous vegetation to be planted is 4332
plants.

6.0 PLANT SCHEDULE
All herbaceous plants within the shallow water zones shall be installed between April 1 and July
31. Installation of herbaceous shallow water plants after this date entails an increased risk of
failure and may only be performed upon mutual agreement between the installation contractor
and owner.