20231579 Ver 1_More Info Received_20240404

Baker, Caroline D
From:
Danielle Clark <[e-mail]>
Sent:
Thursday, April 4, 2024 10:40 AM
To:
Homewood, Sue
Cc:
Perez, Douglas J CIV (USA)
Subject:
RE: [External] RE: Request for Additional Information for Eastfield Warehouse Project -
Mecklenburg County - DWR#20231579
Attachments:
Wetland Impact Exhibit-2024.04.04.pdf
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Hi Sue,
Apologies for the delay in getting back to you on this. The engineer has placed the location of the riser structure and
pipe on the attached plan. The riprap pad downstream of the culvert is being constructed in upland, so we're showing
that as non -impact. Is this what you're looking for? Or maybe we're not fully clear on what you need as it pertains to
the riser structure? Please let me know what you think and please feel free to give me a call on my cell number below.
Thankyou!
Danielle
Danielle Clark, PWS
Senior Project Environmental Scientist
Hart & Hickman, PC
3921 Sunset Ridge Rd, Ste 301 - Raleigh, INIC 27607
Direct: 919-723-2516 - Mobile: [phone]
www.harthickman.com 10
RCIRCLE OF PSMJ 2023 Circle of Excellence Firm
EXCELLENCE
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From: Homewood, Sue <sue. homewood@deq. nc.gov>
Sent: Friday, March 8, 2024 4:41 PM
To: Danielle Clark <[e-mail]>
Cc: Perez, Douglas J CIV (USA) <Doug.J. Perez@ usace.a rmy. mi I>
Subject: RE: [External] RE: Request for Additional Information for Eastfield Warehouse Project - Mecklenburg County -
DWR#20231579
Danielle,
I don't see the large riprap pad on the downstream side of the culvert (replacing the riser structure) as accounted for
within the impact table or impact drawings but it appears to be proposed as part of this project.

Thanks,
Sue Homewood (shelherlhers)
401 & Buffer Permitting Branch
Division of Water Resources
sue.hornewood0cleg.ric.gov please note my new email address
336 813 1863 mobile
919-707-3679 office
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Danielle Clark <[e-mail]>
Sent: Friday, February 2, 2024 11:44 AM
To: Homewood, Sue <sue. homewood @deg. nc.go >
Cc: Perez, Douglas J CIV (USA) <Doug.J. Perez@ usace.armV. mi 1>; Michael Cain <[e-mail]>;
Dan McCauley <[e-mail]>; Luke Bugenske <[e-mail]>
Subject: [External] RE: Request for Additional Information for Eastfield Warehouse Project - Mecklenburg County -
DWR#20231579
CAUTION: External email. Do not click links or open attachments unless verified. Report suspicious emails with the Report Message
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Hi Sue,
Good morning and Happy Friday. Please find our responses to your questions/comments below in red text. I'm also
attaching additional documentation for your use, as well.
1. DWR has been made aware that the USACE has conducted a site visit of the project for review of jurisdictional
areas. Please provide an updated jurisdictional map, confirmation from the USACE for any non -jurisdictional
areas. Please provide updated impact maps, impact tables, and mitigation acceptance letters if appropriate.
Site visit with Corps was completed on November 30, 2023. A finalized Jurisdictional Determination
from the Corps is pending. We've attached an updated jurisdictional map based on comments received
from Doug during the site visit; however, we are awaiting final confirmation from Doug.
2. The application makes reference to an existing riser structure and pond dam. Please show the existing
conditions and riser structure and outlet location on a plan sheet or the updated jd map. It is unclear as to
whether the proposed impact amounts incorporate the length of stream already piped within the riser structure
or not. It is also unclear whether there are any additional impacts proposed below the current pond outlet
structure (additional riprap, culvert length, etc)
• Former riser structure and outlet location approximately depicted on the updated Jurisdictional
Determination Map prepared by Hart and Hickman dated January 30, 2024. Unfortunately, the surveyor
did not pick up the riser structure or pond outlet during their survey of existing conditions at the
site. However, H&H has photographic documentation of the riser structure and used this information to
depict the approximate location of the riser structure on the updated JD Map. H&H also had a GPS
point of the pond outlet and used that information to depict the approximate location of the pond
outlet on the updated JD Map.
• H&H can provide photos of the riser structure and outlet if needed.
• Please see Existing Conditions exhibits included as sheets 3 through 7 of the Construction Drawing
Package prepared by Oak Engineering dated December 18, 2023. As noted above, the surveyor did not
pick up the riser structure or pond outlet, so they are not depicted on these drawings.

• Proposed impact quantities do not account for features that may have been historically impacted by the
installation of the former riser structure and outlet pipe. The proposed culvert pipe will replace the riser
pipe.
• The current outlet structure is located off -site, and additional impacts are not proposed to features
located clowngradient of the outlet.
3. Please provide documentation and/or a construction sequence that clearly show how the work will be
conducted "in the dry" and include any temporary impacts above and below the proposed permanent impact on
the impact tables and impact drawings.
• Please see the Stormwater Management Plan included as sheets 20 and 21 of the Construction Drawing
Package prepared by Oak Engineering dated December 18, 2023.
• Please see the Erosion Control Plan included as sheets 22 through 27 of the Construction Drawing
Package prepared by Oak Engineering dated December 18, 2023.
• The Stormwater Management Plan and Erosion Control Plan will be reviewed and approved by the Town
of Huntersville as the delegated authority.
0 No temporary impacts are proposed.
4. Please provide proposed roadway dimensions and fill slopes for the roadway and proposed buildings. Please
discuss the possibility of utilizing end walls for the culvert and/or retaining walls for fill shoulders to provide
additional minimization of impacts to streams and wetlands on site.
• Please see the Construction Drawing Package prepared by Oak Engineering dated December 18, 2023
for roadway dimensions, and fill slopes for the roadway and proposed buildings.
• An end wall has been implemented on the upgradient end of the culvert proposed in the northern
portion of the site, which will reduce impacts to the on -site stream channel. An updated PCN form is
attached to account for this reduction in impact.
• Please see the updated Environmental Impact Exhibit prepared by Oak Engineering dated January 29,
2024, which depicts the end wall and the current proposed impacts.
• Retaining walls were considered but determined to be cost prohibitive for this project.
5. Please provide plan and profile for the proposed culvert.
9 Please see project details included as sheet 33 of the Construction Drawing Package prepared by Oak
Engineering dated December 18, 2023.
6. The Division is concerned that replacement of a riser structure with a typical culvert will promote sediment
movement from the old pond bed into downstream waters. Please provide a description and/or plan sheets to
show how the project proposes to permanently retain existing sediments/pond bed materials during project
construction and upon project completion.
• Please see the attached Construction Drawing Package prepared by Oak Engineering dated December
18, 2023 for the Stormwater Management Plan and Erosion Control Plan.
• Hart & Hickman conducted a site visit on November 30, 2023 and the majority of the pond footprint has
become stabilized with the growth of dense emergent vegetation, which will assist with preventing
sediment transport.
• The stormwater pond and associated dissipation pad proposed upgradient of the former pond will filter
sediment and dissipate flow velocity prior to discharging into the former pond.
• A large riprap apron is proposed clowngradient of the culvert outlet in the northern portion of the site,
which will dissipate flow and capture sediment discharged out of the former pond.
AttnrhmPntq
- Link to Construction Drawing Package prepared by Oak Engineering
- Updated Environmental Impact Exhibit prepared by Oak Engineering
- Updated Jurisdictional Determination Map prepared by Hart & Hickman
- Updated PCN form

Everette Keith Logistics Park 2024.01.29.pdf (dropbox.com)
If you need additional information or would like to jump on a call to discuss any of the above information, please just let
us know and we will provide that asap. Also, please let me know if you have any issues with the Dropbox link. Thank
you for your review and we look forward to hearing back from you,
Danielle
Danielle Clark, PWS
Senior Project Environmental Scientist
Hart & Hickman, PC
3921 Sunset Ridge Rd, Ste 301 - Raleigh, INIC 27607
Direct: 919-723-2516 - Mobile: [phone]
www.harthickman.com 10
RCIRCLE OF PSMJ 2023 Circle of Excellence Firm
EXCELLENCE
023 . WINNER
From: Homewood, Sue <sue. homewood @deg. nc.go >
Sent: Wednesday, January 3, 2024 11:28 AM
To: Danielle Clark <[e-mail]>; [e-mail]
Cc: Perez, Douglas J CIV (USA) <Doug.J. Perez@ usace.army. mil>
Subject: Request for Additional Information for Eastfield Warehouse Project - Mecklenburg County - DWR#20231579
OR
DWR has completed an initial review of the above noted application and requires additional information in order to
continue our review. Please provide the following information within 30 days of this email. Please note that the
application will be considered "on hold" until receipt of all the requested information.
1. DWR has been made aware that the USACE has conducted a site visit of the project for review of jurisdictional
areas. Please provide an updated jurisdictional map, confirmation from the USACE for any non -jurisdictional
areas. Please provide updated impact maps, impact tables, and mitigation acceptance letters if appropriate.
2. The application makes reference to an existing riser structure and pond dam. Please show the existing
conditions and riser structure and outlet location on a plan sheet or the updated jd map. It is unclear as to
whether the proposed impact amounts incorporate the length of stream already piped within the riser structure
or not. It is also unclear whether there are any additional impacts proposed below the current pond outlet
structure (additional riprap, culvert length, etc)
3. Please provide documentation and/or a construction sequence that clearly show how the work will be
conducted "in the dry" and include any temporary impacts above and below the proposed permanent impact on
the impact tables and impact drawings.
4. Please provide proposed roadway dimensions and fill slopes for the roadway and proposed buildings. Please
discuss the possibility of utilizing end walls for the culvert and/or retaining walls for fill shoulders to provide
additional minimization of impacts to streams and wetlands on site.
5. Please provide plan and profile for the proposed culvert.
6. The Division is concerned that replacement of a riser structure with a typical culvert will promote sediment
movement from the old pond bed into downstream waters. Please provide a description and/or plan sheets to
show how the project proposes to permanently retain existing sediments/pond bed materials during project
construction and upon project completion.

Please contact me if you have any questions regarding these items.
Thanks,
Sue Homewood (shelherlhers)
401 & Buffer Permitting Branch
Division of Water Resources
sue.hornewood0deg.nc.gov please note my new email address
336 813 1863 mobile
919-707-3679 office
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.