RE_ R-5709 Arthur Lane Drainage (3)

Carpenter, Kristi
From:
Rivenbark, Chris
Sent:
Thursday, August 18, 2022 8:54 AM
To:
Conchilla, Ryan
Cc:
Lastinger, James C SAW
Subject:
RE: R-5709 Arthur Lane Drainage
Attachments:
ArthurLaneDitchAnalysis.docx
Good morning Ryan,
Please see the attached document for justification and ditch analysis for Rip -rap in ditch.
We are not filling in any portion of the existing channel (other than the portion due to the new alignment of NC
211). Please note that the proposed ditch is at the same location as the existing toward the end of Arthur Lane past the
cross -pipes under Arthur Lane.
Please let me know if either of you have any other questions and if not, let me know if you're OK with us submitting as a
permit modification request (via Laserfiche).
Chris Rivenbark
Environmental Coordination & Permitting -Eastern Team Lead
North Carolina Department of Transportation
919 707 6152 office
crivenbark(o-)ncdot.aov
1598 Mail Service Center
Raleigh, NC 27699-1598
1000 Birch Ridge Drive
Raleigh, NC 27610
TAT
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From: Conchilla, Ryan <[e-mail]>
Sent: Tuesday, August 16, 2022 1:46 PM
To: Rivenbark, Chris <[e-mail]>
Cc: Lastinger, James C SAW <[e-mail]>
Subject: FW: R-5709 Arthur Lane Drainage
Chris,
Thanks for sending the information attached.
Can you confirm the proposed impacts and activities to minimize flooding will be diverting stormwater into the
intermittent stream (SJ) and will not be filling it?
See Condition #3 on the WQC attached and provide further justification regarding the use of rip -rap vs. a natural swell.

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: Rivenbark, Chris <[e-mail]>
Sent: Thursday, August 11, 2022 2:05 PM
To: James Lastinger <[e-mail]>; Conchilla, Ryan <[e-mail]>
Subject: R-5709 Arthur Lane Drainage
SAW-2018-02283
DWR #20211043
Good afternoon guys,
An area within the project limits (see attached R-5709 Permit Site 15) is experiencing flooding. Division and Design staff
have come up with a plan to address it and we wanted to get your thoughts before we submit a permit modification
request. Instead of the permitted actions at Site 15 (Stream SJ) they propose to excavate a larger ditch adjacent to
Arthur Lane. The study area was expanded to accommodate the added ditch and we'll provide the update PJD request
likely next week.
R5709_ArthurLAne_Redlines_ECAP shows the potential mapping of stream SJ, wetlands WAA, WAB, WAC, & WAD as
well as the proposed ditch. Our consultant confirmed SJ does start and stop as shown and though a portion of the
hydrology will clearly be diverted to the new ditch the topography and remaining drainage area indicate that some
hydrology will remain in the downstream reach of SJ and WAA-WAD.
I'm also going to send you a PowerPoint presentation in a separate email due to file size. Could you both take a look at
the information and let me know what you think?
Chris Rivenbark
Environmental Coordination & Permitting -Eastern Team Lead
North Carolina Department of Transportation
919 707 6152 office
crivenbarkancdot.aov
1598 Mail Service Center
Raleigh, NC 27699-1598
1000 Birch Ridge Drive
Raleigh, NC 27610
STATE of
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