20070776 Ver 1_More Info Letter_20080310

OF W A T~~ Michael F. Easley, Governor
~~~ ~G William G. Ross Jr., Secretary
UJ 1~...- North Carolina Department of Environment and Natural Resources
7
0 ~ Coleen Sullins, Director
Division of Water Quality
,,
March 10, 2008
DWQ Project # 07-0776
Haywood County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Waynesville Commons Retail Associates, LLC
1765 Meriman Road
Akron, OH 44313
Subject Property: Waynesville Town Center
Richland Creek [040305, 5-16-(1), B, TR]
REQUEST FOR MORE INFORMATION: STORMWATER MANAGEMENT PLAN
Dear Sir or Madam:
On October 22,.2007, the Division of Water Quality (DWQ) issued a 401. Water Quality Certification
to fill or otherwise impact 52 linear feet of perennial stream in order to construct the above. named
project. In order to meet Condition 9 of the 401 Certification for this project, a stormwater
management plan, dated February 11, 2008, was received by the DWQ. on February 13, 2008. The
DWQ has determined that your stormwater management plan was incomplete as discussed below.
Additional Information Requested:
1. For all BMPs:
a. An up to date soils report that documents the soil infiltration rates and SHWT levels at
each of the four BMP locations.
b. Information on the pre-treatment system you are using for the two sand filters.
c. Please show the limits of the proposed drainage easements for the BMPs on the plans.
d. Please provide a construction sequence that shows that the BMPs will be protected
from sediment during construction until the entire drainage area is stabilized.
2. For the proposed sand filters:
a. Please provide clean-outs for the underdrain systems.
b. Please provide a minimum slope of 0.5% on the underdrain systems.
c. For infiltration basin A, it appears that there maybe two inlets entering this basin that
do not pass through a flow splitting device. If this is the case, please correct this so that
all flows enter the basin via a flow splitting device and a forebay.
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: htip_!h?c,enrstate,nc_us~.ncwellands
No°e Carolina
~turallr~
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

Waynesville Commons Retail Associates, LLC
Page 2 of 2
March 10, 2008
3. For the proposed infiltration basins:
a. Please provide afour-inch sand layer on the bottom of each infiltration basin.
b. On plan sheet 3.6, the bypass structure detail is incorrectly labeled - it also applies to
manholes 31 a and 44.
The DWQ will require the above additional information to finalize review of the stormwater
management plan for the subject property. Please provide the following information so that we may
continue to review your project. You are welcome to contact me at 919-715-3425 if you have
questions or would like to set up a meeting.
Sincerely,
j ~~ ~"t~i_
Annette Lucas, Environmental Engineer III
401 Oversight/Express Review Permitting Unit
AML/aml
cc: Kevin Barnett, DWQ Asheville Regional Office
USACE Asheville Regulatory Field Office
File Copy
Central Files
Gary O'Nesti, Cedarwood Development, Inc., 1765 Meriman Road, Akron, OH 44313
Filename: 070776 WaynesvilleTownCenter(Haywood)_S W_Hold.doc