20090242 Ver 3_Application_20110211

14C D- EHR
North Carolina Department of'Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
North Carolina Division of Water Quality
Transportation Permitting Unit
In-Field Minor 401 Water Quality Certification, Buffer Certification and Isolated Waters Permit
(( Modification
Project NamefnP Project No.:T yO U' ? 4w /?" ? f Z7uq Date: X7-
DOT Division: 5 County: /W?A K DWQ Project No./Permit Twee: 0 1 oa'f2 V, 2 /y8R
DOT Staff- .C k r I s /- r u rol D WQ Staf :90 8 / y D G S
ACE Staff : DWQ Regional Office: C e..l
Modification Description:
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Modification Sketch:
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Transportation and Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
Location: 2321 Crabtree Blvd., Ralegh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet htlp:Ilh2o.encstate.nc.uslncwetlandsl
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NorthCarolina
Nahmallry
An Equal Opportunity 1 Affirmative Action Employer
In-Field Modification
?y Page 2 of 3
This in-field modification is required for the following reason(s):
The information contained in the application or presented in support thereof is incorrect in the
following manner:
Conditions under which the original certification was issued have changed in the following
manner:
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This in-field modification is valid only if issued by an authorized agent of the NC Division of Water Quality,
Transportation Permitting Unit

in (./ A Ilf County. The project shall be constructed as described in the Modification Description and
Sketch on Page 1 of this document dated 2 - 1)- // to improve/construct the section of
A-that extends from ?if S I to IA,19? (P 0 vim. The approved
design is that described in the Modification Description and Modification Sketch on Page 1 of this document dated
'2__1)-11 . Any further changes to the original Water Quality Certification dated W-13-01 may require a
formal written modification request.
The description of the proposed action provides adequate assurance that the proposed action in the /1/ e VSO
River Basin in conjunction with the proposed development will not result in a violation of applicable Water Quality
Standards and discharge guidelines. Therefore, the State of North Carolina certifies that this activity will not
violate the applicable portions of Sections 301, 302, 303, 306, 307 of PL 92-500 and PL 95-217 if conducted in
accordance with the application and conditions hereinafter set forth. Should your project change, you are required
to notify the DWQ and submit a new application. If the property is sold, the new owner must be given a copy of
this Certification and approval letter, and is thereby responsible for complying with all the conditions. For this
approval to remain valid, you are required to comply with all the conditions listed below. In addition, you should
obtain all other federal, state or local permits before proceeding with your project including (but not limited to)
Sediment and Erosion control, Coastal Stormwater, Non-discharge and Water Supply watershed regulations. This
Modification Approval shall expire on the same day as the expiration date of the corresponding Corps of Engineers
Permit.
Condition(s) of Modification Approval:
1. As-built drawings of the proposed action shall be submitted to the NC DWQ Transportation Permitting
Unit within 30-days of the completion of the action.
2. All the authorized activities and conditions of the certification associated with the original Water Quality
Certification dated 3?/ 3 - 01 and all other corresponding modifications still apply except where
superceded by this certification.
Ridings, Rob
From: Murray, Christopher A
Sent: Wednesday, February 09, 2011 12:08 PM
To: Ridings, Rob
Cc: Moore, David B; Luther, Mark W; Pearson, Donald R
Subject: RE: Construction issue associated with widening of 1-40 in Wake County
Attachments: 1-4744 Maintenance Site.png; 1-4744 Maintenance Site summary sheet.png
Reference: DWQ Project No. 20090242 / / I I l I I
Rob,
Thank you again for coming out to the I-40 project on January 26, 2011 to review the
unpermitted riparian buffer clearing impacts at the end of the roadway project. The design
contractor for the project (Kimley-Horn) has surveyed the area of disturbance associated with
this activity as well as developed the construction plan for installation of the new box and
pipe structure. The revised plan sheet depicting the area as well as a summary sheet are
attached to this email.
Note the following info:
-The original design called for a 2GI box to be installed along the proposed noise barrier to
catch drainage. This system would be tied to an existing pipe structure that discharged
right at the limits of the 50 ft riparian buffer.
-The new design calls for installing a new 15" csp to the existing outfall area using a
standard depth box. The outfall for this new pipe system would discharge to the existing
drainage location. A small rip rap pad would be installed at the pipe outlet. Note that the
location is critical as the discharge still is conveyed to an existing swale feature through
the buffer. The Q10 out of the pipe structure is 4.00 cfs.
-Attachment: I-4744 Maintenance Site depicts the revised roadway construction plan.
-Attachment: I-4744 Maintenance Site Summary Sheet depicts the buffer summary sheet
indicating the riparian buffer impacts. Note: 216 square feet Zone 1 impacts and 1,140
square feet Zone 2 impacts.
Is there any way that you can use a tear sheet modification for this activity? I plan on
meeting you here in Durham on Friday morning to look at Hillandale Road.
Thanks,
Chris
-----Original Message-----
From: Murray, Christopher A
Sent: Monday, January 24, 20115:19 PM
To: Ridings, Rob
Cc: Moore, David 8; Luther, Mark W; Jernigan, Dennis W;
Subject: Construction issue associated with widening of
Reference: DWQ Project No. 20090242
Rob,
Pearson, Donald R
I-40 in Wake County
1

BUFFER IMPACTS SUMMARY
IMPACT BUFFER
TYPE ALLOWABLE KlIT1GABLE REPLACEMENT

SITENO. STRUCTURE SIZE
ITlPE STATION
_(FRONI,Y01 ROAD
CROSSING
ERIOGE PARALLEL
IMFACT ZONE1
(k) _ONE2
IRy TOTAL
(R=) ZONEI
(ft) ZONE2
(1?) TOTAL
(t°) ZONEI
(t) ZONE?
&f
1 2-49- RCP -L-30~28 R 216 1140 13'8

TOTAL: 218 1140 1356 0 0 0

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