20071522 Ver 1_More Info Letter_20070918

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September 18, 2007
EXPRESS REVIEW NOTIFICATION LETTER
Mr. Rob Bailey
442 %2 East Main St.
Clayton, NC 27520
Project Name: Porto Fino Residential Subdivision
Dear Mr. Bailey:
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
Johnston County
EXP# 07-1522
On September 17, 2007, 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 15A NCAC 2H .0506:
1. Please provide one (1) copy of a comuleted PCN Addendum as requested in the Express Review acceptance
letter. As per the attached PCN Addendum, please provide all the items that were missing from your
September 17, 2007 submittal (pre-construction/existing conditions map for all phases of the project (please
include culvert sizing); drainage plan; level spreader worksheets; etc.)
2. Diffuse Flow Provisions as required by the Neuse Riparian Buffer Rule:
a. All proposed level spreaders must be designed according to the DWQ Level Spreader Design
Guidance (January 1, 2007) or the 2007 NC DWQ Stormwater BMP Manual.
b. Please provide details on your pre-treatment method (i.e. vegetated Swale details, supporting
calculations, etc.).
c. All level spreaders must include a forebay.
d. Please provide details on your bypass method (typical details and supporting calculations).
e. Please revise the level spreader length (or redesign utilizing a more appropriate BMP) that you have
proposed for level spreaders 3, 5-11, as they are too short.
f. Most areas where level spreaders have been proposed appear to have a higher slope
g. Please provide 1:50,000 scale drawing of level spreaders 13, 14, and 15.
h. Please include construction notes/instructions for installation of the level spreaders.
3. Approved Stormwater Management Plans:
a. Please provide one (l) copy of the approved (by Johnston County) Stormwater Management Plans for
the entire project.
b. Please provide a written response to DWQ regarding how the stipulations in the Johnston County
Stormwater Management Approval have been addressed.
4. Stub Roads:
a. DWQ has concerns regarding cumulative impacts. Please explain the two stubbed out roads located
on the eastern property boundary. The proposed thoroughfare road seems to have riparian buffer and
stream impacts that are not shown on this application.
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] Internet: h~://h2o.enr.state.nc.us/ncwetlands
No°ChCarolina
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Please respond within five (5) days of the date of this letter by sending three (3) copies of this information. 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 contact Lia Myott at [phone] if you have any questions.
Sincerely
CBK/lem
Cyndi Karoly, Supervisor
401Bxpress Review Oversite Unit
cc: DWQ Raleigh Regional Office
DLR Raleigh Regional Office
USACE Raleigh Field Office
Central Files
File copy
Kevin Yates, John R. McAdams Company, 2905 Meridian Pkwy., Durham, NC 27713