20060830 Ver 1_More Info Letter_20060525

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
May 25, 2006
Union County
DWQ Project 406-0830
Mr. Chris Mathisen
The Mathisen Company
6208 Creft Circle, Suite 230
Indian Trail, NC 28079
Subject: Glendalough Subdivision
Dear Mr. Mathisen:
The Division of Water Quality (DWQ) received your application for a 401 Water Quality Certification for
the subject project on May 23, 2006. Mr. Alan Johnson of this office has visited the site and reviewed the
application. The following information/comments are needed by this office in order to complete our review:
a) Please provide a detailed diagram (cross section, profile, etc.) for the proposed road crossings on
Stream B. The design for the road crossings should include efforts to maintain the base flow in the
stream channel. Sills inside the culvert(s) and construction of floodplain benches upstream and
downstream of the culverts may be required to prevent over widening of the channel. Details for
these measures should also be provided.
b) Because more than 150 linear feet of perennial stream impact is proposed mitigation is required. A
letter of acceptance from the Ecosystem Enhancement Program or a proposed stream restoration
plan must be submitted prior to DWQ's issuance of the 401 Certification.
C) It is noted that buffers are proposed adjacent to the on-site streams. Please provide the width of
buffers proposed along all streams/creeks (i.e. 50-ft., 100-ft., etc.) throughout the project.
d) Calculations for the impervious area do not appear to include the road network for the development
or the commercial area (due to the lack of details, it must be assumed that this would be
approximately 100% impervious). Also, the site plan does not indicate the location of the different
development types. Please provide more detailed information.
e) Please provide the location of the stormwater discharge points. There should be no direct discharge
of stormwater to any stream.
Ne
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Ntura!!y
North Carolina Division of Water Quality 610 East Center Ave., Suite 301 Mooresville, NC 28115 Phone [phone] Customer Service
Internet: www.ncwaterquality.org FAX [phone]
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
Pursuant to 15A NCAC 2H .05 07(h) this project will be placed on hold until such time as the requested
information has been received. In addition, this office is requesting that the Army Corps of Engineers withhold
processing the 404 permit until the requested information is provided. If you have any questions, please contact
_Mr. Alan Johnson at [phone] or :his. Cyndi Karoly in Raleigh at [phone].
Sincerely,
D. Rex Gleason, P. E.
Surface Water Protection
Regional Supervisor
cc: Corps of Engineers .Asheville Office
Ian NIc'lillan - Wetlands Unit
Greg Antemann
Becky Fox, EPA
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