20130292 Ver 1_COE Permit Mod Letter_20131112

ENV
Environmental Consulting Services Inc.
November 4, 2013
Ms. Tasha McCormick
USACE
Asheville Regulatory Field Office
151 Paton Ave, Rm 208
Asheville, NC 28801 -5006
RE: Thorns Estate Residential Development
Buncombe County, NC
Permit Modification
Dear Ms McCormick:
3764 Rominger Rd
Banner Elk, NC 28604
Ph: 828 - 297 -6946
Fax: [phone]
e -mail: wccJv @skybest.com
The purpose of this letter is to request a permit modification for the referenced project. The modification
requested involves a net reduction in wetland impact of approximately 25 sq. -ft., although, due to
rounding, the revised wetland impact table in the PCN reflects no change in total impact. Changes
needed at two locations are the cause of this request. There are no changes to permitted stream
impacts associated with this modification.
The specific changes associated with this request are as follows:
1. Impact to wetland W -5 eliminated: The proposed road layout in the northern portion of the site
has been modified to eliminate approximately 400 linear feet of subdivision road. The
proposed lot configuration in this area has also been modified resulting in the loss of one lot
and a slight increase in the size of several lots. The change to the road layout eliminates two
loops, providing instead two dead -end streets with turn -a- rounds. As a result of these changes
the impact to wetland W -5 has been eliminated and the area surrounding W -5 is now a
common area. Wetland W -5 is approximately 360 sq. -ft. The impacts to W -5 had been
permitted under NWP -29.
2. New impact to wetland W -7: There have not been any major changes to roads or other
infrastructure in the vicinity of wetland W -7. The proposed modification is necessary because
of discrepancies between design topo and actual field conditions in this area. As the final
layout and construction staking was done in this area it was discovered that to provide the
required 3:1 slopes below Rain - Garden #1, there would be some impact to Wetland W -7. The
proposed quantity of new impact will be 335 sq. -ft. This new impact will need to be permitted
under NWP -18 as the fill slopes are associated with a stormwater management BMP.
Attached are the following maps and documents supporting this request:
1. Existing site plan dated 2 -28 -13 from original PCN
2. Proposed Modified Site Plan dated 11 -4 -13 showing road and lot changes in northern part of
site
3. Revised Impact Area Map showing eliminated impact W4 and new impact W5
4. Impact Map for new wetland impact W5
5. Revised sheet 8 of 15 from the PCN showing proposed impact changes

• Page 2
Summary
November 4, 2013
The current permit modification request is to:
• Eliminate Impact W4 (wetland unit 5) 360 sq.ft. (0.008 acres) permitted under NWP -29
• Add new Impact W5 (wetland unit 7) 335 sq.ft. (0.008 acres) using NWP -18
• Proposed Permanent NWP -29 impacts = 0.046 acres (previous = 0.054 ac)
• Proposed Permanent NWP -18 impacts = 0.035 acres (previous = .027 ac)
• Proposed Total wetland impacts = 0.082 (previous = 0.082 acres) ** both include 0.001 acres
of temporary impact
If you need to schedule a site visit please contact me. Please include ENV Inc. on the copy list of all
correspondence for this project. If you have any questions regarding this information please call me at
828 - 297 -6946, thank you.
Sincerely,
John C. Vilas
President, ENV Environmental Consulting Services Inc.
Cc: Mr. Kevin Reese, Ark Development NC
Mr. John Kinnaird, PE, Brooks Engineering Associates
NCDWR,
Thoms Estate 11/4/2013
Permit Modification