20140718 Ver 2_More Info Received_20191003

Mitchell, Robert K
From: Andrew Bick <[e-mail]>
Sent: Thursday, October 3, 2019 7:44 AM
To: Leslie, Andrea J
Cc: Mitchell, Robert K; 'Brown, David W CIV USARMY CESAW (US)'
Subject: RE: [External] Savannah Creek
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Good morning Andrea — thanks for following up.
I think the most beneficial thing the contractor can do is work from the top of bank. We could tell the contractor to
build a coffer dam of sorts using the stone that will eventually be placed at the toe to help isolate the work area before
they pull the bank back. I'm pretty sure it would not prevent all sediment loss, but it would at least redirect fast moving
water away from the immediate work area.
I'm not too worried about the rock vane repairs as these will not involve much if any grading below the bed. The
headers need to be re -set and that work can be done from the bank with minimal disturbance.
With regard to the fords, we will try to make use of the existing ford near station 7+50. If the contractor can take down
a section of fence and travel through the pasture to the downstream end, we'll have them do that. If fence removal
looks like it will be a big hassle, we'd like to be able to cross at a shallow area near 20+50. 1 think we're talking about
one trackhoe trip across at the beginning of the project and one back across at the end, with dump trucks and other
vehicles using the bridge at the Kelly driveway. This bridge is not rated to support a trackhoe and lowboy. I think we'd
try to stockpile stone and other materials on the same bank where the work would take place.
I hope this all makes sense. I'd be glad to discuss more if you'd like.
Andrew
From: Leslie, Andrea J <[e-mail]>
Sent: Wednesday, October 2, 2019 3:47 PM
To: Andrew Bick <[e-mail]>
Cc: Mitchell, Robert K <[e-mail]>; Brown, David W CIV USARMY CESAW (US)
<[e-mail]>
Subject: RE: [External] Savannah Creek
Hi Andrew —
Good news — no trout moratorium applies for this project; it's too far down in the watershed. However it is
upstream of habitat in the Tuck for Appalachian Elktoe and state listed species, so conservative erosion and
sediment control is needed. You and I talked a bit about what could be done, and I wanted to get that down in
print.
Of main concern is —
- Potential loss of sediment from banks with work on the brush toe & tie-in work of the rock vane
repair. Can you name what you can do to lessen risk of sediment loss from these? Often, I ask for the

use of flow diversion structures for bank tie-ins but in this case, I'm not sure if that would be more
mess than is necessary.
2 fords — it would be preferable to use one, but I understand that you may not be able to get equipment
through the upstream ford. I remember you mentioning that use of the 2nd ford would only be needed
for equipment movement into the site and out of the site 1 time each. And that any materials could be
stockpiled on the right bank, not needing transport across the stream. Yes or no?
Thanks,
Andrea
Andrea Leslie
Mountain Habitat Conservation Coordinator
NC Wildlife Resources Commission
645 Fish Hatchery Rd., Building B
Marion, NC 28752
828-803-6054 (office)
828-400-4223 (cell)
www.ncwildlifg.org
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From: Andrew Bick <[e-mail]>
Sent: Friday, September 20, 2019 7:52 AM
To: Leslie, Andrea J <[e-mail]>
Subject: [External] Savannah Creek
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[e-mail]
Good morning Andrea — we're needing to get back on Savannah Creek at the Kelly Farm to address a couple of boulder
vane issues and some bank erosion where bioengineering didn't take hold. You might recall we ended up doing the
work in May of 2017, after the dormant season. Some of the veg did really well, but unfortunately some of the geolifts
in the main outside bend didn't. We're also addressing some bank erosion that didn't get touched the first time around.
Attached are a set of plans, site photos and the PCN I submitted online yesterday. Please review and let me know if you
have questions or comments. I wasn't sure about a trout moratorium on this one, but it would be helpful if we could do
the work during the dormant season so we have a better chance of getting bioengineering established.
Thanks a lot.
Andrew Bick, PE I Principal Engineer
Headwaters Engineering, PC
45 Lotus Place
Asheville, NC 28804

www.headwaters-eng.com