20201117 Ver 1_More Info Received_20201022

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US Army Corps of Engineers
Asheville Regulatory Field Office
Attn: Mr. David Brown
151 Patton Avenue, Room 208
Asheville, North Carolina 28801-5006
October 22, 2020
NC DEQ Division of Water Resources
Asheville Regional Office
Attn: Ms. Kaylie Yankura
2090 U.S. 70 Highway
Swannanoa, NC 28778
Re: City of Brevard: Gallimore Sewer
232 Cashiers Valley Road, Brevard, NC 28712
Corps Action I D: SAW-2020-00211
DWR# 20201117
Nationwide Permit 12 Request
David/Kaylie,
This package is in response to DWR's and WRC's requests for additional information
transmitted in emails dated October 15, 2020.
WRC/DWR requested items:
1. The lat longs you included for stream impacts are identical for S 1-S4 and S5-S8. Can
you rectify this?
Atlas response:
Stream impacts
S1 (CH 300): 35.224771 /-82.734835
S2 (CH 300): 35.226367 /-82.735439
S3 (CH 300): 35.226546 /-82.735514
S4 (CH 300): 35.226804 /-82.735575
S5 (CH 400): 35.225445 /-82.730285
S6 (CH 400): 35.226247 /-82.730761
S7 (CH 400): 35.227908 /-82.732000
S8 (CH 400): 35.228449 /-82.732370
2. Can you clarify how stream banks will be stabilized post -impact? There are several
details provided that appear to contradict each other (e.g., on Sheet EC-7 — `riprap
placement limits' show riprap between scour line and bottom of the bank, with matting
and livestakes above, and `creek and ditch stabilization detail' shows riprap along entire
bank and across the stream bed). We recommend sloping the banks and avoiding
riprap entirely, using matting, seed, and livestakes.
Atlas response:
No rip rap will be placed below the ordinary high-water mark of any stream. Where possible
banks will be sloped, seeded, matted, and live stakes will be planted per the attached typical.
The only areas where rip rap may be used above the ordinary high-water mark will be if steep
banks exist and conditions do not allow for sloping. Rip rap may have to be used if the banks
ATLAS Environmental, Inc.
338 S. Sharon Amity Road, #411
Charlotte, North Carolina 28211
704-512-1206 (office) / 828-712-9205 (mobile)
www.atlasenvi.com / Offices in Asheville and Charlotte

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cannot be sloped to a stable condition based on existing site constraints. See the included live
stake typical from NRCS that will be used.
3. Instead of riprap, we also recommend sloping, matting, and planting the area of bank
that will have the manhole removed, if possible.
Atlas response:
As long as the bank is not too steep sloping, seeding, matting, and live stakes will be used
where the manhole is removed. If there are site constraints, for example existing structures,
that prevent the stream bank from being sloped to a stable condition rip rap will need to be used
to prevent bank erosion.
4. The seeding schedules provided do not specify native seeding or live stakes:
a. Permanent seeding includes tall fescue, KY bluegrass, and sericea lespedezea,
all three of which are highly invasive. We recommend against using these in
wetland and riparian areas. A native riparian seed mix should be used on stream
banks, and a native wetland seed mix should be used in disturbed wetland areas.
b. Please provide the detail for matting and live staking. Matting should be entirely
biodegradable, with no plastic or nylon filament.
Atlas response:
A native riparian seed mix will be used on stream banks. A native wetland seed mix will be
used in the disturbed wetland areas. We will use Ernst Seed site specific mixes for these areas.
Please see the enclosed NRCS live stake typical and Atlas live stake and matting typicals. No
plastic or nylon filament matting will be used along stream banks.
Please see the enclosed construction typical drawings. This package should be what is
necessary to complete your review of the NWP 12 request. Thank you for your attention to the
enclosed request. Please contact me if you need any additional information.
Best regards,
je6 W 4f, d/& kz
Jennifer L Robertson, President
J Robertson (a)atlasenvi. co
Digital Copy:
Andrea Leslie, WRC
ATLAS Environmental, Inc.
338 S. Sharon Amity Road, #411
Charlotte, North Carolina 28211
704-512-1206 (office) / 828-712-9205 (mobile)
www.atlasenvi.com / Offices in Asheville and Charlotte

STEP 1
Obtain willow or willow type adventitiously rootable stock. Material should be from an
area with similar soil, climate, and location relative to the stream. The material shall
be at least two years old and free of disease, rot, or insect infestation. Material shall
be harvested while dormant and soaked (1 to 14 days) before installation.
Note: A waterjet
(hydrodrill) may be used
to create the pilot hole in
silt, loam, and some clay
soils. It does not work
well in large gravels and
cobbles.
STEP 2
Create a pilot hole that is perpendicular to the ground surface and deep enough to
reach the lowest water table of the year. The hole shall be % to 3/4 the length of the
live pole.
Note: If pilot hole is made
with a water jet (hydro
drill), backfilling with water
soil slurry may not be
necessary.
STEP 3
ealant I
Tamp live poles into hole. Top of cutting shall be above competing vegetation. Back
fill hole with water and soil mix to achieve good soil to stem contact. Space stakes in
a 1 to 3 foot random pattern.
Conceptual Plan - Not for Construction N.T.S.
File Name
J. Hoag Date DwPoiaa.g
LIVE POLES Designed C. Hoag 01/07
V N RCS (Live Stakes) Drawn J. Renteria 01/07 Drawing Name
LivePole
Checked
Natural Resources Conservation Service 05 31 07
United States Department of Agriculture Approved
Sheet of

RUN COIR ROLLS PARALLEL
TO THE STREAMBANK
o v o
0
TRIANGULAR LIVE STAKE SPACING
STAGGERED I' — Y APART
NOTES:
1. Harvest and plant live stakes during the dormant season
2. Livestakes should extend down into mid —summer water table
J. Stagger live stakes and space them I' — 3' apart
4. Use a rigid steel pilot bar to prepare planting holes in firm soils
5. Soak live stakes for 24 hours prior to installation
6. After installing, tamp soil securely around the stake
LIVE STAKES — PROFILE
ONMENTAL
338 S. Sharon Amity Road #411
Charlotte, NC 28211
704-512-1206 www.atlasenvi.com
TRENCH AND BURY
EDGES OF COIR FABRIC
WITH
KEE
`/-/N/SH (iKAUt /S ,SttUtU,
AND COVERED WITH STRAW
AND COIR MATTING
Live Stakes and
Coir Matting
LIVESTAKE INSTALLED
WITH 759 BURIED
Scale: Not to Scale Sheet: 1 of 1
Construction Typical
Live Stakes / Coir Matting
Drawn By:
*Conceptual Plan - Not For Construction