20141129 Ver 1_More Info Letter_20141126

A4
NCDENR FMLO
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
November 26, 2014.
Mr. Stephen Mudge and Mr. David Earley
Serrus Creekside, LLC
2 David Keats Drive
Greenville, SC 29630
Subject: Request for Additional Information
Creekside Village
Response Due: December. 31, 2014
John E. Skvarla, III
Secretary
DWR Project #14 -1129
Buncombe,County
Dear Mr. Mudge and Mr. Early:
The Division of Water Resources (DWR) has performed a preliminary review of a 401 Water Quality
Certification application submitted for the above referenced project. The Division has determined that your
application is incomplete and cannot be processed. The application is on -hold until all of the following
information is received:
1. It was determined during the site meeting on November 21, 2014 with the DWR, the United
States Army Corps of Engineers (USACE), and Atlas Environmental, that the feature labelled
"Storm Basin" on the impact map likely meets the conditions of a jurisdictional wetland. Please
complete a jurisdictional determination for this area and update the impact map, plan sheets, and
proposed impacts inventory in Section C of the Pre- Construction Notification (PCN) form.
2. The proposed plan includes the removal of an existing dam and associated pond. According to
the plans, a natural channel will be constructed in this area. Please provide a descriptive
narrative on the proposed construction techniques and construction sequence to prevent the
release of accumulated pond sediments to the downstream channel during the pond removal and
stream channel construction. Where will the pond sediment be disposed and how will it be
stabilized?
3. Update the proposed impacts inventory in Section C of the PCN and the associated impact map
to include all stream, wetland, and open water impacts for the proposed project including but not.
limited to permanent and temporary impacts associated with culvert installation, culvert inlet and
outlet protection, fill, and stream restoration and enhancement activities.
4. The impact map submitted with the initial application shows stream and wetland impacts
upstreamm of the proposed culvert (Impacts 1 and 2). However, the details of the proposed
impacts in this area are unclear to the DWR. Please provide updated construction plan sheets
Water Quality Regional Operations — Asheville Regional Office
2090 U.S. Highway 70, Swannanoa, North Carolina 28778
Phone: 828 - 296 -4500 FAX: 828 - 299 -7043
Internet: hitp: / /portal.nodenr.org /web /wq
An Equal Opportunity 1 Affirmative Action Employer

Serrus Creekside, LLC
DWR# 14 -1129
Page 2 of 3
including but not limited to the proposed fill slopes, final contours, grading plan, and culverts for
all impacted jurisdictional areas.
5. Please provide the location of any planned underground utilities that will cross any jurisdictional -
areas for the proposed project.
6. The submitted vegetation plan does not .provide a permanent riparian seed. Please update the
planting plan to include a native permanent riparian seed mix.
7. The submitted plan and profile sheet (Sheet 1.0) does not provide sufficient details. The
included design profile shows a straight line lacking any bedform diversity (e.g pools, riffles,
steps, etc). Please update the design profile to include, but not limited to, riffle lengths, riffle
slopes, pool depth, pool to pool spacing, proposed bank height, structure locations and
elevations, and proposed drop over structures. Please update the design plan to include
additional details such as constructed riffle locations.
8. Provide a detail for the proposed outlet and outlet protection for the stormwater wetlands that
discharge to the proposed restored stream channel. Provide an explanation. and calculations
demonstrating how the stormwater wetland discharges will not erode the restored stream
channel.
9. Update the morphological summary table to include reference reach and design pattern and
profile.parameters for a range of riffle lengths, riffle slopes, pool depths, pool to pool spacing,
meander lengths and meander widths. Provide justification for your design parameters if you did
riot use a specific reference reach for pattern and profile data.
10. Update the provided typical channel pattern and profile detail to include a range of design values.
11. The submitted rock cross vane and j -hook detail does not provide sufficient information. Please
update the detail to include at a minimum the proposed boulder sizes; arm slopes, placement of
geotextile fabric, backfill material, maximum drop over the structures, use of footers, and a
section illustrating where the structure ties into the streambank (e.g. at the bankfull elevation or
below the bankfull elevation).
12. Please provide the appropriate hydraulic calculations demonstrating that the riffle bed will not
degrade over time. Provide a constructed riffle detail showing the dimensions and proposed bed
material.
13. Impact Justification (Avoidance and Minimization)
Update the avoidance and minimization section in Section D of the PCN since the existing storm
basin appears to be a jurisdictional wetland and the current site layout will increase the
jurisdictional impacts. Please illustrate or explain why the proposed road crossing cannot be
moved or reconfigured to the south of Impact 1 (WL -1000) to avoid jurisdictional impacts.
Additionally, please illustrate or explain why the proposed residential units at Impact 1 cannot be
shifted or removed to minimize the impacts. Can a retaining wall be used to safely
avoid/minimize impacts?
14. Please provide cross - section and profile details for all proposed culvert impacts showing the
provisions for aquatic life passage. Please include culvert diameter, pipe material, slope, and
headwall details.

Serrus Creekside, LLC
DWR# 14 -1129
Page 3 of 3
15. Please update the proposed mitigation monitoring plan to meet the most current Corps
Wilmington District Stream Mitigation Guidelines.
16. Please provide a preservation mechanism (e.g., deed restrictions, conservation easement, etc) for
the stream mitigation areas.
17. Provide methods to minimize and control erosion and sedimentation during project activities.
18. Please provide documentation of Buncombe County's approval of the stormwater management
plan (SMP) for this project by providing EITHER: .
A valid approval letter and one copy of the approved SMP (including plans and
calculations), or
One set of stormwater plan details and calculations stamped as "Approved" by
Buncombe County.
If all of the requested information is not received in writing by the response due date, the DWR will be unable
to approve the application and it will be returned. The return of this project will necessitate reapplication to the
DWR for approval, including a complete application package and the appropriate fee.
Please respond in .writing by the due date by sending three copies of all of the above requested information to
the 401 & Buffer Permitting Unit:
401 and Buffer Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699 -1617
Please be aware that you have no authorization under the Section 401 of the Clean Water Act/ Isolated
Wetlands and Isolated Waters Rules /Buffer Rules for this activity and any work done within waters of the state
may be a violation of North Carolina General Statutes and Administrative Code. Please call Zan Price (828)
296 -4662, if you have any questions.
Sincerely,
G. Landon Davidson, P.G., Regional Supervisor
Water Quality Regional Operations
Asheville Regional Office
=cc: DWR ARO 401 files
ec: Jennifer Robertson, Atlas Environmental
Tasha Alexander, USACE Asheville Regulatory Field Office.
Andrea Leslie, Mountain Habitat Conservation Coordinator, NC Wildlife Resource Commission
Mike Goodson, Buncombe County Stormwater Administrator
Doug Sharp, Buncombe County Erosion Control Officer
G: \WR \WQ\Buncombe \401s\Non- DOT \Creekside Village\ ADDINFO .401CreeksideVillage112614.doc