20080652 Ver 3_More Info Letter_20080604

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1. Article Addressed to:
Harris Development
Attn: Mr. Matt Browder
1600 Camden road
Charlotte,NC 28203
DWQ# 08-0652-v2-Mecklenburg
2. Article Number
(Transfer from service label)
PS Form 3811, February 2004
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A. S' ature
Q, ? Agent
X Lti `? f "' ? Addressee
B. Rdcivedd by (Print d fN?ame)/ y ?? C. Dat of (elilivery
D. Is delivery address different from item 1? ? es
If YES, enter delivery address below: ? No
3. S rvice Type
Certified Mail ? Express Mail
Registered Return Receipt for Merchandise
? Insured Mail C.O.D.
4. Restricted Delivery? (Extra Fee)
? Yes
7008 0150 0001 3901 3013
Domestic Return Receipt
102595-02-M-1540
UNITED STATES POSTAL SERVICE
LISPS
• Sender: Please print your name, address, and ZIP+4 in this box •
NC DENR Division of Water Quality
401 Oversight/Express Unit
2321 Crabtree 13ou1evaid. Suite 250
Raleigh, NC 27604
First-Class Mail
Postage 8 Fees Paid
Permit No. G-10
1 1 tt 1 1t i i 1 i t !!ff ii ? i
?OF Vv n r rRp micnaei r. t;asiey, uovemor
William G. Ross Jr., Secretary
Vj 7 North Carolina Department of Environment and Natural Resources
p .,C. Coleen H. Sullins, Director
Division of Water Quality
June 4, 2008
DWQ EXP # 08-0652v2
Mecklenburg County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Harris Development Group
Attn: Mr. Matt Browder
1600 Camden Road
Charlotte, NC 28203
Subject Property: Hadley Subdivision
REQUEST FOR MORE INFORMATION
On April 21, 2008, the Division of Water Quality (DWQ) issued a 401 Water Quality Certification to
place fill within or otherwise impact 490 linear feet of intermittent stream and 0.246 acres of wetlands for
the purpose of constructing the "Proposed Residential Development Sweden Road and South Blvd" in
Mecklenburg County. In order to meet Condition 7 of the 401 Certification for this project, a stormwater
management plan was submitted to the Express Review Program of the DWQ on June 2, 2008 by Frank J.
McMahan of LandDesign, Charlotte. 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 15A NCAC 2H.0506:
Additional Information Requested
1. All Wet Ponds:
a. Please resize the wet ponds using the appropriate Surface Area to Drainage (S/A) ratio
corresponding to the average pond depth determined by dividing the permanent pool surface
area into the permanent pool volume.
b. Please revise the drawdown calculations using the appropriate driving head.
c. Please label as many contours of the BMP as possible.
d. Please revise the section views of the BMPs using 1" : 20' scale so that all components
appear dimensionally correct. For example, the littoral shelves are less than 10' on a 1" : 10'
scale, side slopes appear steeper than they should appear.
2. Wet Pond 2: -
a. Please re-grade the contours and/or create a diversion structure to direct stormwater from the
southern and western portions of the BMP into the forebay. Stormwater from these areas
appears to bypass the forebay.
b. The left corner of the riprap apron at the end of the BPM outlet pipe appears to be in the
footprint of the stream bed and bank. Please reconfigure your outlet protection device to
avoid unauthorized stream impacts.
3. Wet Pond 3:
a. Please extend the baffle to the temporary pool elevation or higher.
401 Oversight / 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] / lntemet: httD://h2o.enr.state.nc.us/ncwetlands
one
N Carolina
Nawrally
An Equal Opportunity/Affirmative Action Employer- 50% Recycledl10% Post Consumer Paper
Hadley Subdivision
Page 2 of 2
June 4, 2008
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.
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.
Since ,
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/jg
cc: Steve Chapin, USACE Asheville Regulatory Field Office
Allen Johnson, DWQ Mooresville Regional Office
File Copy
Central Files
Frank J. McMahan, LandDesign, 223 North Graham Street, Charlotte, NC 28202