20210719 Ver 1_More Info Received_20211018

Strickland, Bev
From: Phil May <[e-mail]>
Sent: Monday, October 18, 2021 3:49 PM
To: Homewood, Sue
Cc: Gibby, Jean B SAW
Subject: [External] RE: Abington Dr Outfall - Forsyth County
Follow Up Flag: Follow up
Flag Status: Flagged
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Sue
See below for responses. Let me know if you need more information or clarification on anything.
Thanks
Phil
Phil May
Senior Scientist/Vice President
CAROLINA ECOSYSTEMS, INC.
[phone]
From: Homewood, Sue <[e-mail]>
Sent: Monday, October 18, 2021 8:31 AM
To: Phil May <[e-mail]>
Cc: Gibby, Jean B SAW <[e-mail]>
Subject: Abington Dr Outfall - Forsyth County
Hi Phil,
Two quick questions about this one for you:
1. For the impacts under NWP58 — they all fall under the GC thresholds right? I think I remember us discussing this
and you said they won't trigger the IC but the NWP13 impacts trigger written threshold for the GC4134?
As long as Jean is OK with the use of the 13 and 58 combined then the IC is triggered only by the 13 based on
my review. The only 58 condition that may be broken is "any permanent stream impact" so it depends on how
the crossings are considered now with the riprap. We proposed no permanent loss as they were below stream
bed elevation etc.
2. Can you provide a brief statement of whether natural streambank stabilization techniques were considered
please. Specifically laying back the banks and revegetating and geolifts. That will provide for more Avoidance
and Minimization documentation to go with the limits of disturbed area you provided.
Natural stream bank stabilization measures were considered, along with a combination of natural and riprap
stabilization (i.e. riprap on the lower bank and vegetated upper bank). However, there is no option to lay
back the banks here as the yards basically abut the stream bank. Carolina Water is a private entity and
therefore has to negotiate new easements with each owner, so taking the back yards in this well -established
i

neighborhood would bedifficult otbest. Ripropstabilization keyed into the bank also allows omore
"targeted" approach to stabilization in severe erosion areas, while retaining the trees and other vegetation
along portions oƒthe bank /nless erodedsegnnents. Laying back the bon6sforomore noturo/streonnbonk
would remove most oƒthe remaining trees along the banks.
Sue Homewood
Division of Water Resources, Winston Salem Regional Office
Department of Environmental Quality
336 776 9693 office
336 813 1863 mobile
Sue. [e-mail]
450VV.Hanes Mill Rd, Suite 300
Winston Salem N[27105
��� ������������� ����
m �S���������
u