20081473 Ver 4_Arrington Bridge Additonal Area_20141015

Merritt, Katie
From:Merritt, Katie
Sent:Wednesday, October 15, 2014 2:51 PM
To:Norton Webster
Subject:Arrington Bridge Phase I - addt'l areas proposed
Attachments:Nutrient Offset Restoration Area.pdf; SKM_C224e14101514430.pdf
Norton,
You have notified me that EBX would like to add an additional 5 acres (approx. #) of mitigation (buffer and nutrient) to
the existing Phase I site of Arrington Bridge. The BPDP for Phase I was approved on July 19, 2012, which also included a
mitigation plan for Phase II. During the site visit we performed on October 14, 2014, it was determined that the feature
being proposed for buffer restoration and nutrient offset on this additional area, is a downstream segment of the
intermittent stream located on the Arrington Bridge Phase I site. Stormwater runoff from the upstream segment flows
towards this downstream segment through a culvert under Arrington Bridge Road. Since the stream being proposed is
the same stream that has already been approved for buffer mitigation on Phase I, DWR is okay with allowing this 5
additional acres to be added as an “Addendum” to the existing Phase I bank. However, a survey will be required to
determine the exact area of the mitigation.

Additionally, after seeing the site yesterday, it is determined that the proposed nutrient offset area (in yellow on the
attached figure) is not land currently in agriculture. It is actually a grassed yard/open space. Therefore, this side of the
stream cannot be used to generate nutrient offset mitigation, only buffer mitigation. Nutrient offset is generated from
converting a nutrient loading activity into nutrient reduction, such as converting agricultural land into a forested buffer.

The approved BPDP does not include/allow buffer mitigation beyond 50 feet. Please make sure that the figures and
accounting of credits complies with the rules in place at the time the Phase I BPDP was approved in July 2012.

Please provide the following in an “Addendum to Arrington Bridge Phase I BPDP (previously known as Wayne County
Development Alliance)” for review and approval into the existing Arrington Bridge Phase I Mitigation Bank:

General Description of the additional area, location, existing use, etc.


A revised aerial showing the separate mitigation assets & new easement boundaries of Phase I. (similar to the

figure attached to this email titled Nutrient Offset Restoration Area, which was submitted with the original
BPDP)

A new topo map showing the entire Phase I site


Planting Plan (if different than the one approved in the BPDP, or if the same, note that the same plan will be

used for this area as approved in the BPDP on July 19, 2012)

Signed Survey


Conservation Easement


Construction Bond (if needed)

Please let me know if there are any other questions.

Thanks,
Katie

Katie Merritt
Nutrient Offset & Buffer Banking Coordinator
NCDENR-Division of Water Resources
Work: 919-807-6371
http://portal.ncdenr.org/web/wq/401bufferpermitting
Website:
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