20211818 Ver 2_USACE Correspondence_20220511

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See the comment below in red.

Lyle Phillips

Regulatory Specialist

US Army Corps of Engineers

CE-SAW-RG-R

3331 Heritage Trade Drive, Suite 105

Wake Forest, North Carolina 27587

Phone: [phone], Ext. 25.

Fax: [phone]

Email: [e-mail] <mailto:[e-mail]>

We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at https://regulatory.ops.usace.army.mil/customer-service-survey/
<https://urldefense.com/v3/__https://regulatory.ops.usace.army.mil/customer-service-survey/__;!!HYmSToo!aW_I9bqbqlBbNWaXjoS3C9tKZW2FvwXNDEoWNMkX6OAvO74lpmtP0OOL1bfmdIYa3lc5IDWLNpmFTBcEHXN1B_029d13PflXuWN6_w$>
. Thank you for taking the time to visit this site and complete the survey.

From: Kris Bass <[e-mail]>
Sent: Wednesday, May 11, 2022 9:36 AM
To: Cohn, Colleen M <[e-mail]>
Cc: Phillips, George L CIV USARMY CESAW (USA) <[e-mail]>
Subject: Re: [External] RE: [URL Verdict: Unknown][Non-DoD Source] Re: Hsu Pond Spillway Repairs / Raleigh / Wake County / SAW-2016-01125 / Request for Additional Information

I am responding with some answers to each in blue.

On Fri, May 6, 2022 at 4:32 PM Cohn, Colleen M <[e-mail] <mailto:[e-mail]> > wrote:

Good afternoon Kris,

I’m reviewing the application for the Hsu Pond Spillway Repairs, and have some additional questions.

1. In the 4/6/22 response to the USACE, you state that the temporary wetland impact is “related to stone that will be placed in the water”. And the PCN states that the temporary impact
area will “remain after project completion”. I can’t quite tell from the drawings, but my understanding is that this is a permanent impact, but not a loss of waters. Can you please provide
additional details?

This particular wetland area is slightly confusing. The area is in-line with the receiving stream coming out of the pond. This area will require some stone addition at the very end of

the spillway repair. The stone will be a permanent addition, but will submerged similar to a stream restoration cross vane or riffle structure. My interpretation of this was based on
similar stream structures. Please advise whether I should change this impact to permanent.

Our office had a discussion about this recently and it was decided that rip rap installed within wetlands at or below pre-existing contours would be considered a permanent loss impact.

1. Plan sheet 3 of 5 says “Extend Pipe or Abandon Backfill Area”. Once more for clarity, the project is proposing to close off the pipe and backfill around it, and not to extend it,
correct?

Correct, the pipe will be closed after all work is complete. This text was from an earlier version of plans and should have been changed.

1.
2. Please provide a copy of the geotechnical engineering report that is referenced in the 4/6/22 response.

attached.

1.
2. Will the “broken concrete/debris” be removed from the spillway?

Yes. You will see this in the photos.

1.
2. Do you have some pictures of the area?

Yes. I am attaching a brief set of photos. I'm not sure they really do justice to the scale of the damage.

1.

Thanks,

Colleen Cohn

Environmental Specialist II

North Carolina Department of Environmental Quality

Division of Water Resources

Raleigh Regional Office

3800 Barrett Drive

Raleigh, NC 27609

Office: 919-791-4258

E-mail correspondence to and from this address may be subject to the

North Carolina Public Records Law and may be disclosed to third parties.

From: Phillips, George L CIV USARMY CESAW (USA) <[e-mail] <mailto:[e-mail]> >
Sent: Thursday, May 5, 2022 7:53 AM
To: [e-mail] <mailto:[e-mail]>
Cc: Cohn, Colleen M <[e-mail] <mailto:[e-mail]> >
Subject: [External] RE: [URL Verdict: Unknown][Non-DoD Source] Re: Hsu Pond Spillway Repairs / Raleigh / Wake County / SAW-2016-01125 / Request for Additional Information

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Hey Kris,

I apologize. I missed that email. I have it now and will review the information today. If I need anything else I will let you know.

Lyle Phillips

Regulatory Specialist

US Army Corps of Engineers

CE-SAW-RG-R

3331 Heritage Trade Drive, Suite 105

Wake Forest, North Carolina 27587

Phone: [phone], Ext. 25.

Fax: [phone]

Email: [e-mail] <mailto:[e-mail]>

We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at https://regulatory.ops.usace.army.mil/customer-service-survey/
<Blockedhttps://urldefense.com/v3/__https:/regulatory.ops.usace.army.mil/customer-service-survey/__;!!HYmSToo!fZk8UKMasG0qkhJZfQYbSDGWc9UGYT7Yq8GulA74MogonavJVqk2utNkFCDhq1qD7K3YpSRHNobdOIVge51SpcdqHBQX8gfPp-yebw$>
. Thank you for taking the time to visit this site and complete the survey.

From: Kris Bass <[e-mail] <mailto:[e-mail]> >
Sent: Wednesday, May 4, 2022 3:46 PM
To: Phillips, George L CIV USARMY CESAW (USA) <[e-mail] <mailto:[e-mail]> >
Cc: Cohn, Colleen M <[e-mail] <mailto:[e-mail]> >
Subject: Re: [URL Verdict: Unknown][Non-DoD Source] Re: Hsu Pond Spillway Repairs / Raleigh / Wake County / SAW-2016-01125 / Request for Additional Information

Did you have a chance to review my response document? I was thinking I responded to each item but am happy to provide more.

I only suggested a site visit if you agree it will be helpful or if questions remain.

Kris

On Wed, May 4, 2022, 2:56 PM Phillips, George L CIV USARMY CESAW (USA) <[e-mail] <mailto:[e-mail]> > wrote:

Mr. Bass,

I can make a site visit if it will help but I will still need RFAI addressed. I have to be able to document that the proposed activities are in compliance with the permit conditions.

Lyle Phillips

Regulatory Specialist

US Army Corps of Engineers

CE-SAW-RG-R

3331 Heritage Trade Drive, Suite 105

Wake Forest, North Carolina 27587

Phone: [phone], Ext. 25.

Fax: [phone]

Email: [e-mail] <mailto:[e-mail]>

We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at https://regulatory.ops.usace.army.mil/customer-service-survey/
<https://urldefense.com/v3/__https://regulatory.ops.usace.army.mil/customer-service-survey/__;!!HYmSToo!aW_I9bqbqlBbNWaXjoS3C9tKZW2FvwXNDEoWNMkX6OAvO74lpmtP0OOL1bfmdIYa3lc5IDWLNpmFTBcEHXN1B_029d13PflXuWN6_w$>
. Thank you for taking the time to visit this site and complete the survey.

From: Kris Bass <[e-mail] <mailto:[e-mail]> >
Sent: Wednesday, April 20, 2022 1:05 PM
To: Phillips, George L CIV USARMY CESAW (USA) <[e-mail] <mailto:[e-mail]> >
Cc: Cohn, Colleen M <[e-mail] <mailto:[e-mail]> >
Subject: [URL Verdict: Unknown][Non-DoD Source] Re: Hsu Pond Spillway Repairs / Raleigh / Wake County / SAW-2016-01125 / Request for Additional Information

Hello,

I just wanted to check back on this and see if additional information or discussion is needed.

thank you,

Kris

On Wed, Apr 6, 2022 at 10:32 AM Kris Bass <[e-mail] <mailto:[e-mail]> > wrote:

Thank you for the prompt and detailed review. I am providing the attached document as a draft with additional information. I will be happy to edit this or include additional based
on your response.

Many of the impacts associated with this project are the result of a delineation surrounding a severely damaged pond. I think a site visit would go a long way towards understanding
the conditions at the time of the delineation, the conditions now, and the benefits of what we are proposing.

Please let me know your thoughts. I am available by phone and for meetings of all types!

Kris

On Tue, Apr 5, 2022 at 4:03 PM Phillips, George L CIV USARMY CESAW (USA) <[e-mail] <mailto:[e-mail]> > wrote:

Mr. Bass,

I have reviewed the above referenced project and need the following comments/questions addressed to evaluate the proposed activities.

1. The PCN states that “the design is the minimum required to provide needed improvements.” The need for improvements is not disputed; however, it is unclear if the project is avoiding
and minimizing to the maximum extent practicable per general condition 23 (a) and (b). Please provide additional information to support each impact. For example, what is the justification
for the expansion of the embankment slope? How will the proposed open water impacts “improve the safety of the embankment?”
2. It appears that the proposed impacts for spillway repair will result in permanent stream impacts. Based on of review of the plans the proposed activities consist of the permanent
discharge of fill material within a stream channel.
3. It does not appear that the proposed impacts for the spillway repair meet the intent of NWP 3. NWP is for repair of previously authorized fill. Based on the information provided
it appears the boulder step pool activity is a fill that was not previously authorized.
4. Will the proposed activities raise the level of the ordinary pool for the pond?

Please submit the above information within 30 days of receipt of this Notification or we may consider your application withdrawn and close the file. Please call or email ([e-mail]
<mailto:[e-mail]> ) me if you have any questions.

Please let me know if you have any questions or concerns.

Lyle Phillips

Regulatory Specialist

US Army Corps of Engineers

CE-SAW-RG-R

3331 Heritage Trade Drive, Suite 105

Wake Forest, North Carolina 27587

Phone: [phone], Ext. 25.

Fax: [phone]

Email: [e-mail] <mailto:[e-mail]>

We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at https://regulatory.ops.usace.army.mil/customer-service-survey/
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. Thank you for taking the time to visit this site and complete the survey.

--

Kris Bass Engineering

p: 919.960.1552

e: [e-mail] <mailto:[e-mail]>

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p: 919.960.1552

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p: 919.960.1552

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