20001449 Ver 2_Stormwater Approval_20100429

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NCQENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
April 29, 2010
Mr. Bob Dienst
Dienst Enterprises
125 Easton Drive
Mooresville, North Carolina 28117
Gaston County
DWQ Project No. 00-1449v2
Subject Property: Catawba Hills Siib0i,,,is1on, Village T) - Townhomes
APPROVAL OF MODIFIED STORMWATER MANAGEMENT PLAN
Dear Mr. Dienst:
On Apri18, 2003, the Division of Water Quality (DWQ). issued a 40.1 Water Quality
Cer -ificat onto impact 600 linear feet of stream and 0.18 acre: of wetlands in order to construct-
the Catawba Hills Subdivision in Gaston County (this certification replaced the original
certification, which was issued on December 4, 2003). Condition number 4 of the General
Certification required the submission and approval 'of a stormwater management plan for this,: ,, .
proj ect.
On January 10, 2006, the DWQ received a stormwater management plan prepared by.the
consulting engineer, Land Design. Additional information on the stormwater management, plan
was received by the DWQ on March 10, 2006, September 7, 2006, November 15, 2006 and.
March 8 2007. This stormwater plan was approved by the DWQ on March 12, 2007.
On `December 23, 2009, the DWQ received a request from you (dated December 23, 2009) to
modify the approved stormwater management plan. Additional information on the modified
stormwater management plan (dated April 22, 2010) .was received on April 23, 2010. This
revised stormwater management plan has been reviewed and has been found to satisfy the
stormwater management requirements of the 401 Water Quality Certification.
Per the Protocol for 401 Stormwater Management Plan (SMP) Approval and Implementation
(available at: http:/ portal.ncdenr.org/c/document library/get file?uuid=Oc509d61-6dd6-4da8-
9342-7079fe478688&-,roupld=38364), the following requirements apply to your project:
1. The approved SMP must be constructed and operational before any permanent building
or other structure is occupied at the site. If a development is phased, then the approved
401 OversightlExpress 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:r?h2o.enr.state .nc.us..ncwetlandsi
One
NorthCarolina
,Xatundy
An Eoua{ Opportkin0v ` Affirr.;.04-, k" Oe E:rnp!;per
SMP for each future phase must be constructed and operational before any permanent
building or other structure associated with that phase is occupied.
2. Within 60 days after a project or project phase is constructed and operational, a
Certificate of Completion (available at:
http: %h2o.eiu-.state.nc.LiSirlcwetlands/documents.;CertifcateofCompletion_Mar
2009.doc) must be filled out and submitted to the 401 Oversight/Express Unit at 2321
Crabtree Boulevard, Suite 250, Raleigh, NC 27604.
3. The approved SMP as well as drainage patterns must be maintained in perpetuity.
4. The SMP may not be modified without prior written authorization from the certified local
government that approved the SMP or DWQ. The SMP modification must be approved in
accordance with the procedures described above prior to the commencement of the
modifications.
In addition, stormwater easements shall be recorded for a distance of at least 10 feet on each side
of all storm water conveyances on all lots containing, these structures including future access for
maintenance. The stormwater easements shall allow for the ability to maintain the structures,
perform corrective actions as described above and shall provide protection of the structures from
potential alternations 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.
Sincerely,
n c o.?
Annette Lucas, PE
401 Oversight/Express Review Permitting Unit
AML/aml
cc: US Army Corps of Engineers Asheville Regulatory Field Office
DWQ Mooresville Regional Office
Len Ridner, 3714 Spokeshave Lane, Matthews, NC 28105
File Copy
00 1 449CatawbaHillsV illage(Gaston)_Approve_S W_M od