20110737 Ver 1_Stormwater Approval_20130207

A'Na
NCDENR
North Carolina Department of Environment and
Division of Water Quality
Pat McCrory Charles Wakild, P E
Governor Director
February 7, 2013
Mr Tom Furlong
Andale Data Center
1601 S California Avenue
Palo Alto, CA 94304
Natural Resources
Subject Stormwater Management Plan Amendment — Approval
Andale Data Center
DWQ Project # 11 -0737 [401 Water Quality Certification]
Rutherford County
BRD02 / Second Broad River / 9- 41 -(12 7) / WS -V
Dear Mr Furlong
John E Skvarla, III
Secretary
The Division of Water Quality has completed the review of the stormwater management plan amendment
associated with with the subject project listed above This amendment entailed the addition of Wet Detention
Pond BMP6 to accommodate the building area referred to as FRC -4
This approval is for the purpose and design that you described in your application If you change your protect,
you must notify us and may be required to submit a new or amended application All other conditions specified
in the 401 Water Quality Certification approved October 4, 2011 still apply
Stormwater Management Plan Conditions:
The stormwater management system (including this amendment of the addition of Wet Detention
Pond BMP6), all stormwater conveyances, and the grading and drainage patterns depicted on the
amended plans and specifications submitted December 17, 2012, as approved by this office must be
maintained in perpetuity No changes to the structural stormwater practices shall be made without
written authorization from the Division of Water Quality The stormwater management structures
shall have maintenance access for the ability to maintain the structures, and to perform corrective
actions
2 The stormwater easements shall be recorded to provide protection of the structures from potential
alterations by future property owners Documentation of the easements shall be made after
completion of the stormwater management system or by November 30, 2013 The Asheville
Regional Office — Surface Water Protection Section shall be notified after completion of the
easement documentation
Location 2090 U S Highway 70, Swannanoa, North Carolina 28778
Phone 828 - 29645001 FAX 828 - 299 -7043
Internet www ncwaterquallty org
An Equal Opportunity t Affirmative Action Employer
NorthCarohna
,aturallty

Tom Furlong
February 7, 2013
Page 2 of 2
Operation and Maintenance (O &M) Agreements shall be signed and notarized after completion of
the stormwater management system or by November 30, 2013. However, Andale Data Center
representatives must comply with the requirements of the 0 &M Agreements immediately upon
completion of the stormwater management system Copies of the signed and notarized O &M
Agreements shall be submitted to the Asheville Regional Office — Surface Water Protection Section
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties
If you do not accept any of the conditions of this amended Certification (associated with the approved wetland
or stream impacts), you may ask for an adjudicatory hearing You must act within 60 days of the date that you
receive this letter To ask for a hearing, send a written petition, which conforms to Chapter 150B of the North
Carolina General Statutes to the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N C
27699 -6714 This certification and its conditions are final and binding unless you ask for a hearing.
This letter completes the review of your amended plan by the Division of Water Quality under Section 401 of
the Clean Water Act If you have any questions, please contact Susan Wilson in the Asheville Regional Office
at (828) 296 -4500 or at susan a wilsonna ncdenr gov
Sincerely,
Charles(4kild, P E , Director
C W /saw
Enc Stormwater Management System Plan Amendment
cc WBSCP Unit
File Copy
Greg Hoffman — McGill (e -copy)
S \SWP\Rut herford \401s\Non- DOT\Andale\Andale BMP Amendment 1 2013\APRVL Amendment BMP6 2 2013 doc