20110661 Ver 1_More Info Letter_20111024

14CDENR
Noah Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
October 24, 2011
DWQ Project # 2011-0661
Wake County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Omega Association Management
Attn: Mr. George Sewell
1010 Buck Jones Road
Raleigh, NC 27606
Subject Property: Chastain II, Raleigh, NC
UT to Crabtree Creek [030402, 27-33-(10), C, NSW]
REQUEST FOR MORE INFORMATION
Dear Mr. Sewell:
On July 14, 2011, the Division of Water Quality (DWQ) received your application dated June 30, 2011,
with additional information received by DWQ on September 30, 2011, to impact 600 square feet (ft) of
Zone 1 protected riparian buffers and 1,000 square feet (ft) of Zone 2 protected riparian buffers to
construct the proposed plunge pool and stabilization measures at the subject property. 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:
Please analyze the option of replacing the scour hole with a flow splitting box and level spreader-
engineered filter strip (constructed outside the riparian buffer). This approach would be
compliant with Neuse Buffer diffuse flow requirements. Also, the DWQ believes that splitting
the flow would better protect the buffer from erosion and possibly be less costly than the
proposed scour hole. If you choose this option, then please provide a LS-VFS supplement form
with all required items.
2. If your analysis shows that it is not possible to implement the design suggested under Item (1),
then please provide the following information at the correct scales (or risk a return of
application):
a. Calculations for the peak flow during the one inch/hour and ten-year storms based on the
drainage area size and rational C coefficient.
Wetlands, Buffers, Stormwater, Compliance and Permitting Unit (WeBSCaPe) One
1650 Mail Service Center, Raleigh, North Carolina 27699-1650 NorthCarolina
Phone: [phone] FAX: [phone]
Internet: http://portal ncdenr.org/web/wq/ws Ammally
An Equal Opportunity 1 Affirmative Action Employer
Sewel:
Page 2 of 2
October 24, 2011
Plans (1 " - 56' or larger) of the cntire site showing:
The delineated drainage basin.
° The storm drainage system, including all inlets, outlets and conveyances.
Maintenance access.
c. Plan details (1" = 30' or larger) for the scour hole showing:
One foot proposed topo lines between the scour hole and top of stream bank.
° Proposed drainage easement.
Design at ultimate build-out.
d. Section view of the scour hole (1 " = 20' or larger) showing:
° #57 stone.
° Downslope filter fabric.
e. A construction sequence that shows how the scour hole will be protected from sediment until
the entire drainage area is stabilized.
f. A copy of the signed and notarized operation and maintenance (O&M) agreement.
3. One (1) data CD of full size plans in TIFF Group 4 format (black and white, not grayscale or
color). If the plans are too large to store in TIFF format, they can be stored in PDF format.
Please respond in writing within 30 calendar days of the date of this letter by sending a copy of this
information to me. 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.
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 Ms. Amy Chapman at [phone] or Ms. Karen Higgins at 919-
807-6360 if you have any questions regarding or would like to set up a meeting to discuss this matter.
Sincerely,
Karen Higgins, Supe sor
Wetlands, Buffers, Stormwater, Compliance and Permitting Unit
KAH/asc
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
Jones & Cnossen Engineering, PLLC, Attn: Mr. Peter Cnossen, PO Box 1062, Apex, NC 27502
File Copy
Filename: 110661 Chastainll( Wake)NBR_On_Hold2
¦ Complete items 1, 2, and 3. Also complete
item 4 if Restricted Delivery is desired.
¦ Print your name and address on the reverse
so that we can return the card to you.
¦ Attach this card to the back of the mailpiece,
or on the front if space permits.
. Article Addressed to:
OMEGA ASSOC MG MT 10/26/11
MR GEORGE SEWELL
1010 BUCK JONES RD
RALEIGH NC 27606
DWQ 11-0661 WAKE COUNTY
A. Si a re
A. ? Agent
? Addressee
B. ec4ived by (P 'nt Na Ee) C. Date f liv ry
D. Is delivery address d' erent from item 1? ? Yes
If YES, enter delivery address below: ? No
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
(Transfer from service /abeQ -?01-0 3090 0003 4005 1953
PS Form 3811, February 2004 Domestic Return Receipt 102595-02-M-1540
UNITED STAT,
s`u .t srrr:?a.. r : , ^w firs =15}ai?
wY'Ya !3"
P[t
27 04?7 2011
• Sender: Please print your name, address, and ZIP+4 in this box •
DENR-DWQ-WeBSCaPE UNIT
WETLANDS STORMWATER BRANCH
1650 MAIL SERVICE CENTER FL 9
RALEIGH NC 27699-1650