20100988 Ver 1_More Info Letter_20101222

A a
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
CERTIFIED MAIL: 7010 0290 0001 4856 4683
RETURN RECEIPT REQUESTED
Dean Green, President
Greensboro Auto Auction, Inc.
3907 West Wendover Ave
Greensboro, NC 27409
Re: Section 401 Water Quality Certification application
Dear Mr. Green:
December 22, 2010
DWQ# 10-0988
Guilford County
On November 23, 2010, the North Carolina Division of Water Quality (Division) received a copy of your application for a
401 General Water Quality Certification to impact 295 linear feet of an unnamed tributary to South Buffalo Creek for the
4009 West Wendover Ave Retail and Auto Auction Parking Project in Greensboro, NC in Guilford County. Additional
information is required in order that we may determine your project's compliance with 15A NCAC 2H.0500. The
Division will require this information in order to process your application to impact protected wetlands and/or streams on
the subject property. Therefore, we will place this project on hold as incomplete until we receive this additional
information, and if we do not receive the additional information requested below, we will have to move toward denial of
your application as required by 15A NCAC 2H.0506. Please provide the following information so that we may continue
to review your project.
Please be aware that the Division is unable to issue a 401 Water Quality Certification until the
USACE determines the limits of the "single and complete" project.
2. Please provide documentation that supports the requirement for the turning lane. Please provide
engineering drawings which accurately show the limits of the turning lane and the minimum fill
associated with the turning lane.
3. Please provide more details regarding avoidance and minimization of stream impacts for this project. This
should include stream relocation, retaining walls, alternative designs and layouts of the buildings and parking
areas, etc, including modifying the type of use of the property. Loss of space available for development such
as a building or reduction in size of a building must also be considered in the analysis.
4. It is the opinion of the Division that the approximately 45 feet of un-impacted perennial stream between the
road culvert and the development culvert will lose its aquatic function due to the length of upstream and
downstream culverts. The Division will require mitigation for this additional length of perennial stream at a
ratio of 1:1. We suggest that you consider stabilization options such as additional pipe, or riprap to ensure
that if the open section de-stabilizes that it does not impact downstream segments. Please include this stream
channel length in your compensatory mitigation plan.
North Carolina Division of Water Quality, Winston-Salem Regional Office
Location: 585 Waughtown St. Winston-Salem, North Carolina 27107 One
Phone: [phone] FAX: [phone] Customer Service: 1-877-623-6748 NorthCarolina
Internet: www.ncwaterquality.org
aturallly
?, v
An Equal Opportunity 1 Affirmative Action Employer
Dean Green
DWQ# 10-0988
December 22, 2010
Page 2 of 3
5. The Division requires mitigation for all permanent impacts from this project. Please correct Item
number 2 in Section D of the PCN form and supply a compensatory mitigation plan.
6. Please provide an answer to item number 3 in Section F of the PCN form.
7. Please provide the exact length of stream impact measured accurately along the thalweg of the
channel.
8. Please realign the culvert to ensure that the inlet and outlet are aligned with the natural stream
channel to prevent streambank erosion in these areas.
9. Please indicate whether an energy dissipation measure (riprap apron, etc) will be required at the
outlet of the culvert. If so, please include the length as permanent impacts and update your
application and engineering drawings accordingly.
10. Please provide a detailed cross section and profile of the proposed culvert.
11. Please provide a culvert design that includes sills and/or floodplain benches which will ensure proper
stream dimensions during low flow conditions. Please provide construction details for the floodplain
benches.
12. Per the requirements of GC 3821, all work must be done "in the dry". Therefore, dewatering methods will be
necessary to temporarily dewater the stream channel during pipe installation. Please provide a construction
sequence that details the method of dewatering to be utilized at the site and the sequence of construction
events to be followed to ensure compliance with this condition.
13. Per the requirements of GC 3821, please enumerate all temporary impacts to the stream channels. Temporary
impacts also include areas of disturbance necessary for proper dewatering measures and any temporary
erosion control measures expected to be installed within any jurisdictional areas. Please note that temporary
impacts should be minimized to the maximum extent practical.
14. Please provide a construction sequence and details (plans/drawings) that detail the restoration of the
temporary impact areas upon completion of the project.
Please respond in writing within 30 calendar days of the date of this letter by sending a copy of this information to Sue
Homewood at the address on this letterhead, and a copy to Ian McMillan N. C. Division of Water Quality, Wetlands/401
Certification Unit, 1650 Mail Service Center, Raleigh, NC 27699-1650. If you will not be able to provide the requested
information within that timeframe, please provide written confirmation that you intend to provide the requested
information, and include a specific timetable delineating when the requested materials will be provided. If we do not hear
from you in 30 calendar days, we will assume that you no longer want to pursue this project and we will consider the
project as returned.
Dean Green
DWQ# 10-0988
December 22, 2010
Page 3 of 3
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
Division. If you have any questions, please contact me at 336-771-4964 or [e-mail].
Sincerely,
c-
Sue Homewood
DWQ Winston-Salem Regional Office
cc: Andy Williams, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office (via email)
Bruce Nooe, PE, CPT Engineering (via email)
Virginia Spillman, City of Greensboro (via email)
DWQ Winston-Salem Regional Office
DWQ Wetlands/401 Unit