20211197 Ver 1_More Info Received_20210901

Strickland, Bev
From: Idowu, Ade <[e-mail]>
Sent: Wednesday, September 1, 2021 6:08 PM
To: Conchilla, Ryan
Cc: Fersner, John
Subject: [External] RE: 20211197_New Garden Road Existing Sidewalk Connection, Greensboro,
NC_pa rt2
Attachments: New Garden Road Buffer Authorization Form 9-01-2021_003.pdf; New Garden
Sidewalk Gap Buffer Authorization Drawing 2021 Dsn_Plan 1.pdf; 20210901_145354
resizedjpg; Inked - 9-01-2021_resized_Lljpg
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H i Ryan,
I appreciate your effort in clarifying the transportation memo and the impacted zone definition. I have updated the
drawings to identify the impacted zones, and referenced related details for your use. Attached are the documents
regarding our discussion.
In the attached drawing (New Garden Road Sidewalk Gap Authorization Drawing), a fill line is symbolized with the line
"F"which represent areas to be graded,with some minimum fill material within the zones.
The extended concrete curb is a 12—18 inches curb height(see typical detail #2) used to avoid backfill and stream
impact within the zones.
A 20 feet retaining wall (see typical detail #3)will be installed at seven feet at the back of curb by replacing some of the
existing riprap to create a break in the slope, and to avoid impacting the stream. Please see "Inked—9-01-
2021_resized_LI.jpg". The red line shown indicates the proximity of the retaining wall.
Ade Idowu
Civil Engineer
Engineering & Inspections Department
City of Greensboro
Office: [phone]
Fax: [phone]
www.greensboro-nc.gov
From: Conchilla, Ryan <[e-mail]>
Sent:Tuesday,August 31, 2021 2:07 PM
To: Idowu,Ade<[e-mail]>
Subject: 20211197_New Garden Road Existing Sidewalk Connection, Greensboro, NC_part2
Ade,
Thanks for speaking with me. As we discussed, please see the comments below:
In the attached authorization, Page 3- no impacts are listed in Buffer Z1 or Z2.
Please revise to include the total buffer impacts proposed for the project.

Additional information is requested regarding the Buffer Authorization Map_Plan 1 (see attached comments).
The transportation memo is correct, buffer rules do not apply to areas of existing transportation use.The activities
(intersection upgrades,widening sidewalks) are allowable by definition, but they need to be included into the overall
impact to the riparian buffer.
The current Map does not depict the existing access road and bridge crossing. The unnamed tributary continues east
under the bridge and should be accurately depicted along with the associated buffers.
Additional details are requested regarding the placement and stabilization of fill proposed along the embankment of
New Garden Road to support the sidewalk construction. Describe what methods will be used to install rip-rap or a
retaining wall to avoid impact into the bed and bank of the stream feature itself.
*NOTE
Any impacts to the stream (temporary or permanent) will require a written 401 permit, if buffer impacts are outside of
existing transportation facility. If buffer impacts are within existing transportation facility, a written 401 is not required
but the project will be subject to our GC4132 in addition to Buffer Cert. (if there are stream impacts).
Ryan Conchilla, PWS
Environmental Specialist II
401 and Buffer Transportation Permitting Branch (DOT Divisions 7+8)
Division of Water Resources, NC Department of Environmental Quality
[e-mail]
From: Idowu,Ade<[e-mail]>
Sent:Thursday,August 26, 2021 3:35 PM
To: Conchilla, Ryan <[e-mail]>
Subject: [External] RE: 20211197_New Garden Road Existing Sidewalk Connection, Greensboro, NC
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Hi Ryan,
Attached is the updated authorization form and the supporting documents. I have also included comments below to
address your request. Please let me know if you have any more questions.
Ade Idowu
Civil Engineer
Engineering & Inspections Department
City of Greensboro
Office: [phone]
Fax: [phone]
www.greensboro-nc.gov
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