20052199 Ver 1_Stormwater Approval_20100628

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
June 28, 2010
Wake County
DWQ Project No. 05-2199v2
Mr. Justin Patsey
John Wieland Homes
107-A Quail Field Court
Morrisville, NC 27560
Subject Property: Governor's Row formerly known as Holloman Tract
Crabtree Creek [030402, 27-33-3.5, B NSW] 303(d)
APPROVAL OF MODIFIED DIFFUSE FLOW PLAN
Dear Mr. Patsey:
On January 31, 2005, the NC Division of Water Quality (DWQ) issued a 401 Water Quality Certification
and a Neuse Buffer Authorization Certificate to impact 149 linear feet of streams and 19,561 square feet
of protected riparian buffer for the purpose of constructing the above named residential subdivision. Per
Condition 4 of that approval, all constructed stormwater conveyances shall be directed and maintained as
diffuse flow at non-erosive velocities through the protected stream buffers such that it will not
reconcentrate before discharging into a stream. The January 31, 2005 approval of this project included an
approval of the diffuse flow plan.
On June 2, 2010, the DWQ received a modified diffuse flow plan submitted by Withers & Ravenel, Inc.
The DWQ has reviewed the modifications to the diffuse flow plan and has determined that they comply
with current state design requirements.
The stormwater conveyance system, which includes one dry detention pond, three level spreaders, and the
signed and notarized Operation and Maintenance Agreements dated December 6, 2005, as approved by
this Office, and the drainage patterns depicted on the plan sheets, must be maintained in perpetuity. No
changes to the structural stormwater practices shall be made without written authorization from the
Division of Water Quality. All stormwater management conveyances, detention and treatment structures
shall have maintenance access and at least 10-foot drainage easement on each side to allow for the ability
to maintain the structures, to perform corrective actions and shall provide protection of the structures from
potential alterations by future property owners.
This letter completes the review of the DWQ under Section 401 of the Clean Water Act. If you have any
questions, please contact me at 919-715-3425.
401 OversighUExpress Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: http:llh2o.enr.state.nc.usincwetlands/
North Carohna
Nahmally
An Equal Opportunity 1 Affirmative Action Employer
Mr. Justin Patsey
June 28, 2010
Page 2 of 2
Sincere , Lkt
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Annette Lucas, PE
6\-401 Oversight/Express Review Permitting Unit
AML/aml
cc: US Army Corps of Engineers Raleigh Regulatory Field Office
Lauren Witherspoon, DWQ Raleigh Regional Office
Withers & Ravenel, Inc., 111 MacKenan Drive, Cary, NC 27511
File Copy
052199v2GovemorsRow( Wake)_Diff_Flow_Mod_Approve.doc