20180661 Ver 1_Corps Request for Additional Information_20190201

Moore, Andrew W
From: Brown, David W CIV USARMY CESAW (US) <[e-mail]>
Sent: Friday, February 01, 2019 2:33 PM
To: Kaylie Yankura
Cc: Moore, Andrew W; Leslie, Andrea J; Hamstead, Byron
Subject: [External] Request of Additional Information - Mud Creek Interceptor Sewer Line
(UNCLASSIFIED)
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ClearWater Environmental Consultants, Inc.
Asheville, NC
Kaylie Yankura,
The Corps has received and reviewed your submitted requested additional information with supporting documents for
the Mud Creek Interceptor Sewer Line project in Hendersonville, Henderson County, NC. After review and evaluation of
the submitted information and documents, the Corps is requesting the following additional information in order for us
to consider the application to be complete.
1) The applicant's proposed compensatory mitigation is insufficient and not appropriate in offsetting the environmental
losses resulting from unavoidable impacts to waters of the U.S. (WoUS) to be authorized by the Department of Army
permit. The proposed discharge of fill material into WoUS will convert forested or scrub -shrub wetlands to herbaceous
wetlands in the permanently maintained utility line right-of-way resulting in losses of wetland functions and services.
Therefore, these wetlands will be permanently adversely affected by the regulated activity. As noted earlier, the Corps
has determined for this project mitigation will be required to reduce the adverse environmental effects of the permitted
activity. Please submit a compensatory mitigation proposal or plan for the proposed permanent impacts to forested and
shrub -shrub wetlands which will be converted to herbaceous wetlands due to the permanently maintained corridor
along the utility right-of-way.
Based upon review of the submitted NCWAM data, site visit(s), wetland habit and functional losses, and induction of
additional stressor to the wetlands, a mitigation ratio of 1.5:1 will be required for this project. Check the resubmitted
PCN's wetland impacts table and impact maps to make sure they account for all the proposed temporary and permanent
impacts for the project. Please revise and resubmit this table and maps, if needed.
At this time, the request to utilize NWP 12 for authorization of impacts to WoUS is on hold until the above additional
information has been received. Once the Corps receives the information noted above we will be able to continue to
process your request. If you have any questions please contact me.
Sincerely,
David Brown, PG
Regulatory Specialist/Geologist
USACE Wilmington District -Asheville Regulatory Field Office
151 Patton Avenue, Room 208
Asheville, NC 28801-5006

828-271-7980, ext. 4232
[e-mail]
CLASSIFICATION: UNCLASSIFIED