20110009 Ver 1_More Info Letter_20110207

A FA
T- A
HCDENR
North Carolina Department of Environment and Natural Resources
(Division of Water Quality
Beverly Eaves Perdue Coleen H,Sullins Dee Freeman
Governor Director Secretary
February 7,2011
DWQ Project# 11-0009
Durham County
CERTIFIED MAIL:RETURN RECEIPT REQUESTED
City of Durham
101 City Hall Plaza
Durham,NC 27701
Subject Property: City of Durham—American Tobacco Trail Phase E
Ut to Gum Creek[030605, 16-41-1-13, WSIV,NSW]
'REQUEST FOR MORE INFORMATION
Dear Sir or Madam:
On January 3,2011,the Division of Water Quality(DWQ)received your application dated November 8,
2010 to fill or otherwise impact 0.05 acres of 404/Wetlands, 136 feet of stream(it is not clear whether this
is a perennial stream or an intermittent stream,and whether impacts are temporary or permanent),and
10,502 square feet of Zone 1 Neuse River basin protected riparian buffer,and 5,819 square feet of Zone 2
Neuse River basin protected riparian buffer to construct the proposed greenway trail at the site. The DWQ
has determined that your application was incomplete and/or provided inaccurate information as discussed
below. The DWQ will require additional information in order to process your application to impact
protected wetlands and/or streams on the subject property. Therefore,unless we receive five copies of the
additional information requested below,we will place this project on hold as incomplete until we receive
this additional information. If we do not receive the requested information,your project will be formally
returned as incomplete. Please provide the following information so that we may continue to review your
project.
Additional Information Requested:
1. It is not clear whether stream impacts are to perennial stream or an intermittent stream,and
whether impacts are temporary or permanent. Please clarify.
2. The 2:1 side slopes that are used throughout this project are too steep. Please adjust the slopes to
3:1 or flatter.
3. The DWQ does not allow the use of scour holes to meet diffuse flow requirements except in
unusual circumstances when flows are very small and space is very constrained. Scour holes may
be used to stabilize transitions from cut to fill slopes but not to diffuse flow from new ditches that
are directing flow through protected riparian buffers. As discussed in the meeting between the
consultants and the DWQ on December 15, 2010,the DWQ recommends the following approach
to meeting diffuse flow requirements on this project:
a. Minimize the use of swales to the maximum extent practicable by super elevating the
greenway trail and allowing stormwater to sheet flow off the.trail. The small drainage
Wetlands,Buffers,Stormwater,Compliance and Permitting Unit(WeBSCaPe)
1650 Mail Service Center,Raleigh,North Carolina 27699-1650
Phone:[phone] FAX:[phone]
Internet:http://pogal.ncdenr.org/wep/wq/ws t
An Equal Opportunity 1 Affirmative lAction Employer �)
I

City of Durham
Page 2 of 2
February 7,2011
areas on this project are unlikely to cause significant amounts of runoff sheeting across
the trail.
b. Provide level spreaders that are designed in accordance with Chapter 8 of the BMP
Manual. For every level spreader that is proposed,provide a Level Spreader Supplement
Form that is completely filled out with all required items attached. The BMP Manual and
Supplement Forms are available at http://portal.ncdenr.or web/wq/ws/su/bmp-manual.
4. For the scour holes that remain after implementing Item(2)above,please provide a detailed
justification for its need on the project(i.e., it is stabilizing a cut-fill slope transition or flows are
very small and space is very constrained).
Please submit this information within 30 calendar days of the date of this letter. If we do not receive this
requested information within 30 calendar days of the date of this letter,your project will be withdrawn
and you will need to reapply with a new application and a new fee.
This letter only addresses the application review and does not authorize any impacts to wetlands,waters or
protected buffers. Please be aware that any impacts requested within your application are not authorized(at
this time)by the DWQ. Please call Mr. Ian McMillan or Ms.Amy Chapman at 919-807-6301 if you have
any questions regarding or would like to set up a meeting to discuss this matter.
Sincerely,
Ian McMillan,Acting Supervisor
Wetlands,Buffers, Stormwater,Compliance and
Permitting Unit(WeBSCaPe)
IJM
cc: U.S.Army Corps of Engineers,Raleigh Regulatory Field Office,Wilmington District,USACOE
Lauren Witherspoon,DWQ Raleigh Regional Office
File Copy
Carl Bush,Parsons Brinckerhoff,434 Fayetteville Street, Suite 1500,Raleigh,NC 27601
Filename: 110009CODurhamAmericanTobaccoTrailPhaseE(Durham)On_Hold
i

SENDER: COMPLETE THIS SECTION i COMPLETE THIS SECTION ON DELIVERY
■ Complete items 1,2,and 3.Also complete A. sign ure i
item 4 if Restricted Delivery is desired. ❑Agent
■ Print your name and address on the reverse ❑Addressee
so that we can return the card to you. Rece ved by(Printed N e) C. Date of Delivery
■ Attach this card to the back of the mailpiece,
or on the front if space permits.
D. Is delivery address different from item 1? ❑Yes
1. Article Addressed to: If YES,enter delivery address below: ❑ No
CITY OF DURHAM 2/9/11
101 CITY HALL PLAZA
DURHAM NC 27701
I
DWQ 11-0009 DURHAM COUNTY 3. Service Type
,Certified Mail ❑Express Mail
❑Registered Return Receipt for Merchandise
❑Insured Mail ❑C.O.D.
4. Restricted Delivery?(Extra Fee) ❑Yes
2. Article Number
(►-ranter from serviceiapeo 7010 3090 0003 4068 7572
LPS Form 3811,February 2004 Domestic Return Receipt 102595-02-M-1540

UNITED STATES POSTAL SERVICE First-Class Mail
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• Sender: Please print your name, address, and ZIP+4 in this box •
NC DENR DWQ WETLANDS UNIT
401 OVERSITE/EXPRESS UNIT FL 9
1650 MAIL SERVICE CENTER
RALEIGH NC 27699-1650 l�
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