20030084 Ver 2_More Info Letter_20080123

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
January 23, 2008
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Robert Luddy
120 Weathers Street, Suite F
Youngsville, NC 27596
Subject Property: Thales Academy
REQUEST FOR MORE INFORMATION
Dear Mr. Luddy:
DWQ EXP No. 03-0084v2
Wake County
On January 22, 2008, the Express Review Program of the Division of Water Quality (DWQ) received
your application for the above referenced project. The DWQ has determined that your application will
require additional information. Please provide the following information so that we may continue to
review your project and prevent denial of your application as required by 1 SA NCAC 2H .0506:
Additional Information Requested
1. Diffuse Flow Provisions:
a. Per DWQ requirements, all stormwater runoff from the first inch of rainfall from the entire
project site shall be detained, treated and released within 2-5 days and at a rate such that it
will be diffused across the riparian buffer. From the breakdown of drainage areas on the sheet
with the CPS letterhead (page 1 of 1), it appears that runoff from subarea lA is bypassing the
detention device. Please explain why this portion is not being treated. It may be helpful to
delineate the drainage areas lA and 1B to clarify.
b. Please provide calculations to show how the runoff from the first inch of rainfall shall be
released from the detention device within 2-5 days. It may be necessary to just cap the 6.0 in
outflow pipe and drill a hole, having a smaller orifice of appropriate size, that will release the
flow at a much slower rate.
2. Riparian Buffer Impacts:
a. Please provide an impact map showing the Zone 1 and Zone 2 impacts in detail. The table on
the plans (C7.02) differs.from the table on the PCN form. Please ensure that the correct
riparian buffer impacts are shown on both the PCN form and the plan sheets.
b. The Maintenance plan shown on plan sheet C4.01, item 4, allows for reseeding and fertilizing
as necessary. Please revise the statement to allow only aone-time fertilization (for
establishment purposes) in the vicinity of the level spreader or adjacent to the riparian buffer.
Please respond within five (5) days of the date of this letter by sending two (2) copies of the above
information in writing. The Express Review Program is a process that requires all parties to participate in a
timely manner.
401 Oversight I Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] FAX [phone] l Internet: httg://h2o.enr. state. nc. us/ncwetlands
Noe Carolina
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Thaler Academy
Page 2 of 2
January 23, 2008
This letter only addresses the application review and does not authorize any impacts to wetlands, waters
or protected buffers. Please be aware that any impacts requested within your application are not
authorized (at this time) by the DWQ.
Please contact Joseph Gyamfi or Lia Myott at 919-733-1786 if you have any questions regarding or
would like to set up a meeting to discuss this matter.
di Karoly, Supervisor
Oversight/Express Review Permitting Unit
CBK/lem/jg
cc: James Shern, USACE Raleigh Regulatory Field Office
Lauren Witherspoon, DWQ Raleigh Regional Office
File Copy
Central Files
Jay Keller Keller Environmental, 7921 Haymarket Lane, Raleigh, NC 27615