_External_ RE_ Garrison Road Extension 401_404 application question

Wanucha, Dave
From: Jennifer Robertson <[e-mail]>
Sent: Thursday, May 4, 2023 8:59 PM
To: Wanucha, Dave
Cc: [e-mail]
Subject: [External] RE: Garrison Road Extension 401/404 application question
Attachments: Pump Around Typical.pdf
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Dave/Doug,
Apologies for the delay. I have been in office and field meetings most of this week. I had someone else fill out
the e-PCN — I see now that I should have reviewed it. We are proposing the permanent impacts that you listed
below as S1 = 25 linear feet of embedded rip rap apron at the inlet of the culvert (required by the City of
Charlotte) (temporary impact for the Corps — no loss of surface water), S2 = 89 linear feet for box culvert
installation, and S3 = 56 linear feet of embedded rip rap apron at the outlet of the culvert (required by the City
of Charlotte) (temporary impact for the Corps — no loss of surface water). We will pump around to dewater the
work area during construction. See the attached typical we use for pump arounds. We will have 20 linear feet
of temporary stream impact upstream and 20 linear feet of temporary stream impact downstream during the
pump around. Please let me know if you need anything else.
Thank you,
Jennifer L Robertson, President
ATLAS Environmental, Inc.
338 S. Sharon Amity Road #411
Charlotte, NC 28211
[phone] office
[phone] mobile
www.atiasenvi.com
Offices in Asheville and Charlotte
RONMENTAL
From: Wanucha, Dave <[e-mail]>
Sent: Monday, May 1, 2023 4:24 PM
To: Jennifer Robertson <jrobe [e-mail]>
Cc: [e-mail]
Subject: Garrison Road Extension 401/404 application question
Hi Jennifer,

I need some clarification regarding stream impacts as shown in your application. The plan
sheets show the impacts, but all impacts were not presented in the PCN. Please confirm that
you are proposing the following permanent impacts (linear feet) for the crossing:
89 for culvert;
25 for riprap at inlet; and,
56 for riprap at outlet.
Also, there were no temporary impacts proposed for dewatering the stream (e.g., pump
around) while constructing the culvert. Please provide data on any temporary impacts related
to constructing the proposed crossing. The attached BMP Manual (Chp 5) provides details on
dewatering a channel, etc.
No need to resubmit a PCN as these clarifications can be resolved via email. Once these
questions have been answered, and there are no other outstanding issues, I can proceed with
drafting your 401 Certification and issue it - once the public notice period ends on May 27.
Thanks, and let me know if you have any questions.
Dave W.
Dave Wanucha
Environmentol Speciolist 11
Transportation Permitting Branch for NCDOT Divisions 9 and 11
Division of Water Resources, Department of Environmental Quality
Office/Cell: [phone]
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