20140189 Ver 1_DWR Staff comments to ACOE on Final Mit Plan 071315_20150713

Scarbraugh, Anthony
From:Scarbraugh, Anthony
Sent:Monday, July 13, 2015 4:07 PM
To:Hughes, Andrea W SAW ([e-mail])
Subject:Arrington Bridge III Final Mitigation Plan and NCIRT Comments Summary
Ms. Hughes,

The Division of Water Resources (DWR) has reviewed the Final Mitigation Plan, dated June 2015 and the NCIRT
Comments Summary, dated June 10, 2015. Our comments are as follows:


The DWR is satisfied with the response provided by WK Dickson regarding DWR’s concerns over

FEMA/Hydrologic Trespass and the recommendation to incorporate soil ripping within the Mitigation Plan.

As previously stated in the review of the Prospectus and previous mitigation plan review, the DWR is concerned

and discourages the use of permanent structures to achieve and maintain hydrology. The comments provided
by WK Dickson within the NCIRT Comments Summary stated “Due to the level of manipulation over the last 50
years (i.e. no mature tree/root masses), the use of permanent structures will be necessary to contain sheet flow
and mimic natural feature typically seen in undisturbed wetland slough habitats.” The DWR has considered
these comments and request additional information as to why a permanent grade control structures are
required en lieu of other self-sustaining alternative design methodology.

Thanks,
Anthony Scarbraugh

Anthony Scarbraugh
Environmental Senior Specialist
Washington Regional Office
North Carolina Department of Environment and Natural Resources
Division of Water Resources – Water Quality Regional Operations Section
943 Washington Square Mall
Washington, NC 27889
[phone]

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