20061085 Ver 2_More Info Requested_20061026

O~O~ W AT F9QG
~ ~ ~ -~
~ `~ Y
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
October 26, 2006
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Donald S. Hughes
Union County Public Schools
116 N. Main Street
Monroe, NC 28112
Subject Property: Elementary School "G", Union County Public Schools
DWQ EXP No. 06-1085, Version 2
Union County
REQUEST FOR MORE INFORMATION-EXPRESS REVIEW PROGRAM
Dear Mr. Hughes:
~-~ ~
~..~ ~~<
O C T 3 f~ Z006
+Nk~'tA~fDS G STnq~yy~T~R 9RA~Cir
On October 24, 2006, the Division of Water Quality (DWQ) received your PCN application for the above-
referenced project through the Express Review Program. The DWQ has determined that the application will
require additional information in order to review and provide an approval to impact these resources. Failure to
provide this information may result in denial of your application per I SA NCAC 2H .0506.
Please provide the following information so that we may continue our review of your project:
The stream crossing diagrams are insufficient. Placement of culverts and other structures in waters,
streams, and wetlands shall be designed and installed to allow for low flow passage of water and aquatic
life movement, and maintain existing stream dimensions above and below each culvert. Please provide
cross sectional diagrams showing elevations of culverts and stream profile and culvert diameter. In the
case of multiple culverts for one crossing, it may be necessary to maintain the low flow channel through
one culvert, while placing the others slightly higher in elevation to handle storm flows. Details for
temporary crossings should also be provided.
2. Length of the rip rap disapators for the culverts is not indicated on the plan., Please provide more details.
If rip rap is needed it must be imbedded in the stream bottom to maintain a low flow stream channel.
3. Due to the concentrated area of impervious surface (consisting of school buildings and parking lots) a
stormwater management plan will be required for that area. The plans show stormwater being routed to a
stormwater pond to the north, but other stormwater is routed east of the school with apparently no
treatment. Please address this discrepancy. Questions regarding stormwater management plan approval
should be routed to the 401 Oversite/Express Permitting Unit in Raleigh.
4. stormwater outfalls should be located in such a manner as to not impact receiving streams. On the plans,
the outfall below stream impact S-2 appears very close to the stream.
5. Floodway culverts should be used as needed to maintain the hydrology of wetlands which are crossed by
roads. Please address this issue for wetland impact W-1.
No e hCarolina
,Naturally
Mooresville Regional Office Division of Water Quality Phone [phone] Customer Service
Internet: www.ncwaterguality.org 610 East Center Ave, Suite 301 Mooresville, NC 28115 Fax [phone]
An Equal OpportunitylAffirmative Action Employer - 50% Recycled/10% Post Consumer Paper

Please respond within three (3) days of the date of this letter by sending five (5) copies of the above requested
information to Mr. Barry Love at the letterhead address.
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 Mr. Love at [phone] if you have any questions regarding this matter.
Sincerely,
`~ ~ ; .`.
D. Rex Gleason, P.E.
Surface Water Protection
Regional Supervisor
cc: USACE Asheville Regulatory Field Office
401 Oversight/Express Review Permitting Unit
File Copy
Central Files
Heather Crutchfield - Terracon