20080398 Ver 1_More Info Received_20090128

0-Tr: 0 S-o398

Fish and Wildlife Associates, Inc.
25 Water Tower Lane ? P.O. Box 241 ? Whittier, NC 28789
Phone: [phone] ? [phone] ? Fax: [phone]
Email: fwa(a??dnet.net ? Web: www.fishandwildlifeassociates.com
January 23, 2009
Annette Lucas
Division of Water Quality
401 /Wetlands Unit
1650 Mail Service Center
Raleigh, NC 27699-1650
RE: Peddler's Square Planting Plan
DWQ #08-0398
Dear Ms. Lucas:
SAN `? 8 200°
DE AERBRAN
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Attached are the plan and specifications for the plantings for the Peddler's Square Stormwater
Wet Detention Pond. We are having some computer software difficulties with the CAD file
from Alford Engineering with corrupted files and are in the process of transferring this plan to a
1 "=20' scale map as per the requirements. The attached plan is close to final scale and will
provide you with planting locations, species and numbers of plants that are proposed.
Please let us know if you have any questions.
Sincerely,
T-I

Barbara Wiggins
Muse 23/74 West LLC
Peddlers Square
BMP Wet Detention Pond
Planting Plan Specifications
COE #2008-00781
DWQ #08-0398
To meet the requirements of the 404/401 permit and certification for Peddler's Square, a
stormwater BMP was designed to treat all post-construction runoff from the site. Based on the site
characteristics and water quality requirement, a Wet Detention Pond design was prepared for the
site by Alford Engineering. As part of the design, a planting plan was required for the BMP pond.
Fish and Wildlife Associates (FWA) used the DENR Stormwater Guidance Manual and the design
guidance references for stormwater ponds and wetlands from NCSU Stormwater Group to develop
the specific planting plan for the site. FWA had to incorporate into the planting plan the proposed
BMP design along with the location of existing structures and utilities on the site. There was
planting considerations for the area adjacent to the proposed wetland restoration on the south side
of the pond which would create a wetter environment in that area. Additionally, the planting plan
was limited due to the close proximity to the underground wastewater treatment system located on
the south side of the pond. Further, this site is located on trout waters (Richland Creek) and
required additional plant considerations for thermal pollution control.
The planting plan will consist of species listed as typical vegetation for the community type
common in the Waynesville valley area. The stormwater ponds will be placed under an O&M
Agreement that was submitted separately. The entire project will be planted where any
disturbance takes place as a result of project construction.
The proposed species for the planting plan use were recommended by DENR Stormwater BMP
Manual and NCSU references for best growth and survival in the extreme conditions experienced
in stormwater BMPs. The following table shows the list of the trees, shrubs, and aquatic plants
and their common names, scientific names, quantity, type of container and container size if
appropriate, zone of water levels, and planting season. Trees and shrubs will be planted randomly,
with emphasis on landscape islands where possible.
Five species of trees were proposed (See attached planting plan and table). The tree species
consist of red maple, black cherry, white oak, sycamore, and black willow (Zone IV). The plan
avoided trees within 10' of inlet and outlets. Willows will not be planted within 50' of these
structures. No trees are proposed for the berm and emergency outlet areas. The berm at 3.5' in
height will be planted with smaller shrubs and herbaceous cover that can be maintained (mowed).
Trees will be spaced at 11' to 19' apart. All trees will be spaced to allow for mower access at
maturity to prevent invasive species. Trees will be spaced to prevent leaf drop into the permanent
pool. All trees planted will be B/B or container plants, minimum 1 gallon container. A total of 29
trees for the BMP pond site are proposed.
Three species of shrubs, tag alder, silky dogwood, and silky willow were proposed (Zones III-IV).
Tag alders will be planted as transplant tubes, and silky dogwood and silky willow will be planted
as live stakes. Local plant growth on site may provide for additional live transplants. Each
symbol on the plan represents groupings of 34 shrubs in the area. Shrub groupings will be spaced
7'-12' apart. A total of 125 shrubs are proposed for the site.
Centipede grass as recommended by NCSU for stormwater BMPs will be seeded in the upland
areas (Zone IV). Centipede grass will be applied at the rate of/. to 'h pound per 1,000 square feet.
Temporary vegetation for erosion control will consist of annual rye (cool season) or millet (warm
season) depending on the construction schedule. A grass buffer will be established around the
outside of the BMP using centipede or equivalent seed mixture. A wetland seed mixture of native
species will be used along the pond edges in addition to the transplants of herbaceous plants
(Zones III-IV). Wetland seed mixture will consist of the following: soft rush (Juncus effusus), joe
pye weed (Eupatorium fistulosum), fox sedge (Carex vulpinoidea), and other Carex sp. Native
seeds will be applied at the rate of 15 pounds per acre. Native seeds will be purchased from firms
listed and approved by DENR (example: Ernst Conservation Seeds). All seeded areas will be
mulched with straw or biodegradable matting after seeding.
Aquatic plants will be placed in Zones I-III on the benches of the permanent pools at a spacing of
one per 9 square feet in groupings of three. Deep water plants will be American lotus which is
recommended for trout waters because it does not float (Zone I). Other deep water species float
and increase heating of the water in the permanent pools. For Zone II, softstem bulrush and
pickerelweed will be utilized and will extend into Zone III. Broadleaf arrowhead will be planted
in Zone III only. And the transition zones between occasionally wet and upland areas will be
planted with rushes and sedges (Zones III & IV) in addition to the shrub groupings.
Soil amendments will be used where soil conditions indicate a need for mulch, fertilizer or pH
amendment is necessary. Soils removed during the excavation of the stormwater BMP pond that is
suitable for the pond edges will be incorporated into the soil in these areas. Most of the native soil
on the site is hydric and will require little amendment to ensure healthy growth of the wetland
plantings. The native soil also has a seed bank of native species for the area.
Trees and shrubs will be inspected and supported through the first year of growth, including any
necessary watering and/or replacement of dying specimens. There will be a minimum two-year
warranty period for all plants. This warranty will include 100% survival/replacement of all plants
at the end of the first and second year. Procedures will be developed to control invasive weeds,
animal and vandal damage, mulching, re-staking, and watering to ensure plant survival.
Construction Sequence
The majority of the construction on site has already occurred (permit after the fact). The
remaining building and parking lot construction will be built, stabilized and asphalted as quickly as
possible. While construction on the last structures and lot are in progress, sediment control catch
basins, silt fences, rock filters and other appropriate sediment control devices will be employed to
keep the runoff from active construction sites from the stormwater system. Retrofitting the
stormwater system into the stormwater pond BMP will be completed prior to the pond's
completion in order to prevent an influx of sediment from the remaining construction activities.
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