20231596 Ver 1_USACE RFAI_20231218

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Greetings,

This email is in reference to your permit application requesting Department of the Army (DA) authorization to affect waters of the United States to dredge Symphony Lake. The application
has been assigned the file number SAW-2023-01253. The following information is necessary to complete the evaluation of your proposal. Please provide the following:

1. The disposal site, a lagoon south of the South Cary Wastewater Treatment Plant, is .85 acre in size. Four acres of sediment (12,400 cubic yards) would be placed there.
The application further states that material would not be placed within 1-foot of the crest of the lagoon’s surrounding dike. Please verify that the lagoon will be capable of receiving
all dredged material. Are secondary disposal locations also being considered?

2. There appear to be significant waters surrounding the lagoon. Have delineations been conducted in these areas? What measures are proposed to ensure no impact to adjacent
waters results?

3. How will material be moved from the spillway dredge area to the temporary storage area?

4. The application states that alternative lands to the south are residential but Wake County iMaps documents a large upland forest area is shown owned by GI ETS Regency
Woods. Please detail why these uplands are not usable in lieu of clearing forested wetland for dredge storage.

5. The application states that live-staking with saplings would occur if required in the future. Please explain how this requirement would be triggered, when in the future
the decision would be made, and why replacing woody vegetation once complete is not currently proposed.

6. The avoidance and minimization discussion doesn’t discuss wetland impacts for dredge spoil. Please explain why clearing a forested wetland for dredge spoil is required,
when the town owns both the Koka Booth property (uplands), and the existing greenway trail (which presumably could be temporarily detoured/closed).

Please provide the requested information within 30 days, or your application will be administratively withdrawn. To clarify, if the requested information is submitted after the 30-day
timeframe, you will not be required to re-submit an entirely new PCN (unless otherwise specified). We will continue to review and/or process your permit application upon receipt of
the requested information.

Please note that unless avoidance and minimization can be maximized, wetland functional losses expected between project initiation and full restoration of impacted wetlands may require
a minimum 1:1 mitigation ratio prior to use of any permit we may verify for use.

Please contact me with any questions or concerns.

Alexi

Alexi Archer

Biologist

SAD Technical Regional Execution Center

U.S. Army Corp of Engineers

100 W Oglethorpe Ave

Savannah, GA 31401-3604

Phone: [phone]

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