20060830 Ver 1_More Info Letter_20060804

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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
August 4, 2006, 2006
Union County
DWQ Project #06-0830
Mr. Chris Mathisen
The Mathisen Company
6208 Creft Circle, Suite 230
Indian Trail, NC 28079
Subject: Glendalough Subdivision
Dear Mr. Mathisen:
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The Division of Water Quality (DWQ) received your application for a 401 Water Quality Certification for
the subject project on May 23, 2006. On May 251h, a letter was issued to you requesting more information.
Pending submittal of this information the project was placed on hold by DWQ. The following
information/comments were requested by this office in order to complete the review:
a) 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 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 (high density, low density). Please provide more detailed information.
e) The location of the stormwater discharge points. There should be no direct discharge of stormwater
to any stream.
One
N Carolina
Naturally
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]
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. Failure to submit this information by August 30"', will result in the application being withdrawn from
consideration for a 401 Water Quality Certification. If you wish to proceed with the project following that date,
a new application and fee will be required. If you have any questions, please contact Mr. Alan Johnson at (704)
663-1699 or Nils. Cyndi Karoly in Raleigh at [phone].
Sincerely,
D. Rex Gleason, P. E.
Surface Water Protection
Regional Supervisor
cc: Corps of Engineers-Asheville Office
Ian;41c1fillan - Wetlands Unit
Greg Antemann
Becky Fox, EPA
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