20061302 Ver 3_Stormwater Approval_20090507

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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
May 7, 2009
DWQ Project No. 06-1302
Wake County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Dan Gottlieb
North Carolina Museum of Art
2110 Blue Ridge Road
Raleigh, North Carolina 27607
Subject Property: North Carolina Museum of Art - Museum Expansion Project
House Creek [030402, 27-33-13, C, NSW]
APPROVAL OF MODIFIED STORMWATER MANAGEMENT PLAN
Dear Mr. Gottlieb:
On September 15, 2008, the Division of Water Quality (DWQ) issued a 401 Water Quality Certification
to impact 0.8 acre of ope water (pond) in order to construct the North Carolina Museum of Art - Museum
Expansion Project. Condition number 6 of the General Certification required the implementation of the
approved stormwater management plan for this project.
On May 4, 2009, the DWQ received a revised stormwater management plan, dated April 23, 2009,
submitted by the consulting engineer Mr. Stephen Blake of Artifex ED, Inc. This revised stormwater
management plan has been reviewed and satisfies the stormwater management requirements of the
401 Water Quality Certification.
The structural stormwater practices as approved by DWQ as well as drainage patterns must be maintained
in perpetuity. No changes to the structural stormwater practices shall be made without written
authorization from the DWQ. 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. All operation and maintenance activities shall be followed as
stipulated in the signed and notarized Operation and Maintenance Agreement.
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 Oversight/Express 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://h2o.enr.state.no.us/ncwetlands/
North Carolina
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An Equal Opportunity 1 Affirmative Action Employer
Mr. Dan Gottlieb
Page 2 of 2
May 7, 2009
Sincerely,
Annette Lucas, PE
401 Oversight/Express Review Permitting Unit
AML/aml
cc: US ACE, Raleigh Field Office
Lauren Witherspoon, DWQ Raleigh Regional Office
DLR Raleigh Regional Office
File Copy
Mr. Stephen Blake, Artifex ED, 2363 Blake Street, Suite 202, Denver, CO 80250
Filename: 061302ver3N CMu seu mofArtExpansion_SW_Mod_Approve.doc