HomeMy WebLinkAbout20190289 Ver 2_Compliance Comments_20201116 (3)Strickland, Bev
From: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil>
Sent: Monday, November 16, 2020 10:53 AM
To: Parker, Jerry A
Cc: Wanucha, Dave; Snell, William H; Whitley, Kimball; 'dmoore@rkk.com'; Eason, Patty P
Subject: [External] RE: U-2581 Site 5 Sediment Loss -Corps
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Hi Jerry, and thanks for your email. My apologies for missing your call on Friday. Just an FYI, my mobile phone's
voicemail is not set up so leaving a voicemail on my office phone and/or sending an email as you have done is still best.
I am ok with proceeding as you have suggested in this case.
However, for future similar issues regarding sediment loading in wetlands, I am generally in favor of removal of
sediment from wetlands even if they are vegetated. Specifically, since layers of off -site sediment typically end up killing
the above -ground portion of existing herbaceous vegetation anyway, destruction of above -ground herbaceous
vegetation during sediment removal is not a serious environmental concern. Further, leaving even an inch of
construction sediment in these areas will leave them vulnerable to colonization by invasive species (Microstegium,
Chinese privet, etc.). For such cases I would recommend using stiff metal rakes (rather than shovels) and buckets to
remove the last inch or so of sediment (although a small amount would certainly be left/incorporated into the native
soil). There are certainly instances where the skim layer is so thin that removal isn't worth the disturbance, but the
threshold is much thinner for wetlands than streams. In the majority of cases the sediment removal can work around
trees and other woody species, with the understanding that existing herbaceous vegetation disturbance is acceptable
for the benefit of the long-term function of the wetland. Per usual, the disturbed portion of the wetland should be
seeded with a regionally -appropriate wetland/riparian seed mix and mulched once the sediment is removed.
Please let me know if you have any questions, and thanks as always for keeping us informed during project construction.
-Dave Bailey
David E. Bailey, PWS
Regulatory Project Manager
US Army Corps of Engineers
CE-SAW-RG-R
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27587
Phone: (919) 554-4884, Ext. 30.
Fax: (919) 562-0421
Email: David. E.Bailey2@usace.army.miI
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From: Parker, Jerry A <jparker@ncdot.gov>
Sent: Friday, November 13, 2020 2:19 PM
To: Bailey, David E CIV USARMY CESAW (USA) <David.E.Bailey2@usace.army.mil>
Cc: Wanucha, Dave <dave.wanucha@ncdenr.gov>; Snell, William H <wsnell@ncdot.gov>; Whitley, Kimball
<kwhitley3@ncdot.gov>; 'dmoore@rkk.com'<dmoore@rkk.com>; Eason, Patty P <peason@ncdot.gov>
Subject: [Non-DoD Source] U-2581 Site 5 Sediment Loss
Dave,
Site 5 on U-2581 experienced sediment loss to an adjacent wetland after yesterday's 4.5 inch
rain event. All of the devices basically held but with that great of an amount of rain the devices
and the road overtopped resulting in flooding of the entire work area. I have attached
pictures and the permit drawing detailing the location of the impacted area. I estimate that
the loss was within an approximately 150 sf area with basically a silt skim of one inch or
less. Fortunately, a vegetated barrier exists between the wetland and the stream which likely
reduced the amount of sediment entering the stream. Any sediment that did reach the fast
moving stream did not deposit nearby and is likely washed far away downstream. After
speaking with the Roadside Environmental Engineer, it was decided that we would
recommend that the contractor seed and mulch the impacted area with a native seed mix
rather than risk impacting the wetland and it's vegetation further by shoveling out the
sediment. I tried calling you on your mobile phone but your mailbox was full. However, I did
leave you a message on your work phone. Please let me know if you do not agree with our
decision or if you would like to add anything to what we have recommended. Thanks.
Jerry Parker
Environmental Supervisor
Division 7
North Carolina Department of Transportation
336 256 2063 office
jparker ncdot.gov
1584 Yanceyville St.
P.O. Box 14996
Greensboro, NC. 27415-4996
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.
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