Modification Request_ Bethabara Road Culvert Replacement Project_ DWR 20240316

Carpenter, Kristi
From: Tisdale, Jessica <[e-mail]>
Sent: Monday, May 13, 2024 2:56 PM
To: Conchilla, Ryan
Subject: [External] RE: Bethabara Road Culvert Replacement Project, DWR 20240316
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Thank you, Ryan. I'll re -submit with a new ePCN. https://edocs.deg.nc.gov/Forms/Pre-Construction Notification Form
From: Conchilla, Ryan <[e-mail]>
Sent: Friday, May 10, 2024 12:26 PM
To: Tisdale, Jessica <[e-mail]>
Cc: Chapman, Amy <[e-mail]>; Williams, Kelly <[e-mail]>; Carpenter, Kristi
<[e-mail]>; Lawrence, Jennifer L CIV USARMY CESAW (USA)
<[e-mail]>; Mullins, Andre <[e-mail]>; Yankura, Kaylie
<[e-mail]>
Subject: Bethabara Road Culvert Replacement Project, DWR 20240316
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Hi Jessica,
I've had a chance to review the information you've provided.
If you are requesting a modification on impact site #S4 from a rip -rap collar/apron permanent fill to permanent culvert
stabilization, please submit a revised PCN with the complete impact summary table and final design plans.
On the ENV-01 Impacts Replace_pg7_(attached), the stream width should be clearly depicted on the plans (only one
blue line) as compared to the stream profile depicted in the ESC site plans (attached). A cross-section view of the culvert
(inlet/outlet bench detail) should be provided.
The 401 issued on 4-1-24 was according to the information listed in the PCN and the stream mitigation requested. The
difference in this scenario was listing permanent stream fill as the impact type and not stabilization, stabilization does
not require mitigation.
Once the information is received, I'll issue the 401 modification. Let me know if additional assistance is needed.
Thanks
Ryan Conchilla, PWS
Environmental Specialist II
401 and Buffer Transportation Permitting Branch
North Carolina Department of Environmental Quality
919-707-9111 office
[e-mail]

NORTH CAROLINA -
kl;
Depariment o1 Environmental Quality
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From: Tisdale, Jessica <[e-mail]>
Sent: Thursday, May 9, 2024 11:45 AM
To: Conchilla, Ryan <[e-mail]>
Cc: Chapman, Amy <[e-mail]>; Williams, Kelly <[e-mail]>; Carpenter, Kristi
<[e-mail]>; Jennifer. [e-mail]; Mullins, Andre <[e-mail]>
Subject: [External] RE: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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Hi Ryan and All,
Please see my answers below in blue bold below.
I am familiar with NCDOT permitting program and the same detail we are showing for stream stabilization at the inlet
and outlet of the culvert (10381723-01CG112 01CG112_ Culvert _stabilzation_Additional_page_20240502) are
considered temporary/permanent impacts with no mitigation. Please help me understand what is different, if anything,
in this scenario.
Please let me know how to proceed and if you would like to jump on a Teams call to discuss this further. I want to
understand the impact evaluation regarding mitigation. I am available today and tomorrow most anytime as my
schedule is open.
Thank you,
Jessica
Jessica Tisdale
Sr. Environmental Scientist, CE, PWS
HDR
555 Fayetteville Street, Suite 900
Raleigh, NC 27601
D 919.232.6654 M 919.218.9192
iessica.tisdale(cD_hdrinc.com
hdrinc.com/follow-us

From: Conchilla, Ryan <[e-mail]>
Sent: Friday, May 3, 2024 11:17 AM
To: Tisdale, Jessica <[e-mail]>
Cc: Chapman, Amy <[e-mail]>; Williams, Kelly <[e-mail]>; Carpenter, Kristi
<[e-mail]>; [e-mail]
Subject: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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unless you recognize the sender and know the content is safe.
Jessica,
To better assist with your request, can you confirm where in the stream channel the rip -rap aprons will be installed?
There will be no rip -rap aprons in the stream channel. We are in final design, and it has been determined keyed -in or
embedded stone will be used and installed appropriately at the top and bottom of the culvert as a stream
stabilization technique (10381723-01CG112 01CG112_Culvert_stabilzation_Additional_page_20240502). This is a
stream stabilization impact as there was some scour at the top and bottom end of the existing culvert. This measure
would help to stabilize the stream bed around the proposed culvert. I am requesting a change in this impact from rip -
rap collar/apron permanent fill to permanent culvert stabilization. Please see the details attached.
#
3a. Reason for
3b. Impact
3c. Type of
3d.
3e.
3f. Type of
3g.
3h.
Impact
Type
Impact
Stream
Stream
Jurisdiction
Stream
Impact
Name
Type
Width
length
Original Submittal of ePCN (02/27/2024)
S4
Riprap collar
Permanent
Rip rap Fill
Monarcas
Perennial
Both
15
69
(up/downstream
Creek
of culvert)
100% Design Submittal Request (05/09/2024)
S4
Culvert
Permanent
Stabilization
Monarcas
Perennial
Both
15
69
Stabilization
Creek
(inlet/outlet of
culvert)
Based on the drawings and the information provided, it appears the aprons are depicted throughout the entire stream
profile and located below the water level. If that is correct, the mitigation required for the permanent stream impacts
for the Project have not changed (141LF).
*It should also be noted that the drawings depict the rip -rap aprons in very close proximity to an unnamed tributary (UT)
located immediately south of the Project area. What E&S measures will be installed in this area to prevent impacts into
the UT during construction? Please see the enclosed ESC plans (ESC_2024.05.06 Bethabara) for the culvert and
adjacent UT.
Ryan Conchilla, PWS
Environmental Specialist II
401 and Buffer Transportation Permitting Branch
North Carolina Department of Environmental Quality
919-707-9111 office
[e-mail]

D_ E
kj/�
NORTH CAROLINA
Department of Environmental Quality
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Carolina Public Records Law and may be disclosed to third parties.
From: Tisdale, Jessica <[e-mail]>
Sent: Thursday, May 2, 2024 2:14 PM
To: Conchilla, Ryan <[e-mail]>
Cc: Chapman, Amy <[e-mail]>; Williams, Kelly <[e-mail]>; Carpenter, Kristi
<[e-mail]>; [e-mail]
Subject: [External] RE: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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Hi Ryan,
The permits were submitted at 60% design (due to emergency and road closure) and now we have final design which is
showing embedded rip -rap at the inlet and outlet of the culvert.
Based on this I would like to request a change in the issued 401 permit to reflect less permanent stream impact. The
embedded rip -rap fill for inlet/outlet stabilization detail (10381723-01CG112
01CG112_ Culvert _stabilzation_Additional_page_20240502) and revised impact sheet (ENV-01-
Impacts_Replace_pg7_20240502) are attached. Please note, the rip -rap would not exceed the stream bed elevation and
would be "keyed" into the stream bed.
Would you like me to request a formal modification through the ePCN process or can we do this through email?
I will also request a new SOA from Kelly at DIMS for 72 linear feet after I hear back from you.
Please let me know the best way to proceed.
Thank you,
Jessica
From: Conchilla, Ryan <[e-mail]>
Sent: Thursday, April 25, 2024 1:30 PM
To: Tisdale, Jessica <[e-mail]>; Carpenter, Kristi <[e-mail]>;
Jennifer. [e-mail]; Williams, Kelly <[e-mail]>
Cc: Chapman, Amy <[e-mail]>
Subject: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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unless you recognize the sender and know the content is safe.

Hi Jessica,
I've reviewed the request below and the PCN listed rip -rap collars as permanent, rip -rap fill.
The total mitigable stream impacts requested for the project were 141 LF and the 401 WQC (attached) reflects that
impact total.
Due to the permanent loss of waters from the culvert and the rip -rap collars, the 1:1 mitigation ratio for the stream
impacts is correct.
Thanks
Ryan Conchilla, PWS
Environmental Specialist II
401 and Buffer Transportation Permitting Branch
North Carolina Department of Environmental Quality
919-707-9111 office
[e-mail]
D_ E
�
NORTH CAROLINA7AM Q
ClAi
Department of Environmental Quality
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Carolina Public Records Law and may be disclosed to third parties.
From: Tisdale, Jessica <[e-mail]>
Sent: Wednesday, April 24, 2024 12:42 PM
To: Carpenter, Kristi <[e-mail]>; Jennifer. [e-mail]; Williams, Kelly
<[e-mail]>; Conchilla, Ryan <[e-mail]>
Subject: [External] RE: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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Thank you for sending the 401 permit.
I gave Ryan a call and, also Amy Chapman this morning.
Importantly, I wanted to share the nomenclature for the rip -rap collar in our permit. These rip -rap areas, also known as
rip -rap aprons are placed up and downstream of the culvert to discourage scour underneath the culvert. These are non-
mitigable with USACE. Jennifer and I had some back -and -forth about it this morning. It is considered a low -quality
stream so she required a 1:1 mitigation ratio.
I initially assumed these rip -rap aprons were permanent, mitigable but now I see they may not be and onlyjust
permanent with no mitigation. Please confirm this statement so that we may make the appropriate payment to DMS
(either for permanent impact to 72 or 141 linear feet). There is a big price difference so I want to be sure we are
following the correct pathway for mitigation.
This project is going to be 100% in the next 60 days and start of construction very soon.

Snip from the PCN form below.
. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the side, thr
sites impacted.
" S." will be used in the table below to represent the word "strearn'
Si
3a. Reason for impact* {?}
Culvert in tallatlOr
3b.impact
hype *
Temporary -
3c. Type of Impact*
Dewatering V
3d. S. name*
Monarcas Creek
3e. Stream
Type* 0)
perennial -
2
O rfl CUIver# I
Permanent -
Culvert r
Monarcas I'i
Pwennial �
S3
ank stabilization
Permanent
Bank Stabilization
Monarcas Cree
renni2al
Sd
Riprap collar (up/c
Permanent �LRlp
Rap FYI
Monarcas Creels
Perennial -
Add another impact
Jessica
From: Carpenter,Kristi <kristilynn.carpenter@deg. nc.gov>
Sent: Tuesday, April 2, 2024 2:09 PM
To: Todd Love <[e-mail]>; [e-mail]; Tisdale, Jessica
<[e-mail]>; Williams, Kelly <[e-mail]>; Conchilla, Ryan
<[e-mail]>
Subject: Bethabara Road Culvert Replacement Project, DWR 20240316 Version 1, Approval Letter
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All,
This email is being sent to you because you have been identified as an electronic copy recipient of the subject
document. If you have any questions about this email or the attached document, please contact Ryan Conchilla at
[e-mail].
If you have General Certification questions please use the following link to access the site map for General Certifications
on our Website: hitps://www.deq.nc.gov/about/divisions/water-resources/water-qualiiy_permitting/401-buffer-
permitting_/general-certifications

3. Stream Impacts
If there are perennial or intermittent stream impacts lincludine temporary impacts) proposed on the sib, then complete this question for all stream
sites impacted.
'S." will be used in the table below to represent the word "stream'.
si
]c.neewnbrlmpect�Rl
Culvert installatior
]Glmped
Pe'
*emppmy -
9c.Typof lmpade
oewwrenre
]d.&nmc
Monarcas Creek
L.s4xm
e m
vereaa�
]t. Typeof
JunsaMlon*
emn -
9 &wlmh*
p
aw.m
Impact
w
bnplh'
137
sz
Bottemed culvert
nnrt -
ane �
cw.an
��
l Monarcas Creek
N angel
eoln
1...5 ,ala,il
72
m�.,�xal
s9
Bank stabilization
Pw,aw,t
Monarcas Creek(
Paranntal -
Sane slabao-auen-
amn
15
54
sa
Rlprap collar (up/r
IPennanenr-„rnro_�d
nil
Monarcas Creek
Parenn�
Sam
15
B9

Sincerely,
Kristi Lynn Carpenter
Kristi Lynn Carpenter
Administrative Assistant
401 & Buffer Transportation Permitting Branch
Department of Environmental Quality
Division of Water Resources
919.707.3872 office
kristilynn.carpenter(cancdenr.gov
512 N Salisbury Street, 12th Floor
1617 Mail Service Center
Raleigh, NC 27699-1617
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Email correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties by an authorized
state official.