20061154 Ver 2_General Correspondence_20071217

WITHERS L~l
December i7, 2007
NC-Division of Water Quality
Attn: Ms. Cyndi Karoly and Mr. Ian McMillan
2321 Crabtree Blvd.
Raleigh, North Carolina 27604
Re: Request forAdditional information -Associates Park II
W&R Project #: 2060543
DWQ Project #: 06-1154, Ver. 2
Dear Ms. Karoly and Mr. McMillan,
~~6~'Y
~-, ~,
,~
~•~"~'~~
~~h
We received your request for additional information on December 4`h, regarding the
proposed impacts associated with the Associates Park Development. We are in the
process of revising the stormwater plans, as per your request. We anticipate that the new
exhibits and supporting calculations will be completed bymid-January. We will forward
this information under separate cover. We appreciate your patience and request that our
application remain in the 401 review process until we complete the stormwater plans.
Please feel free to call if you have questions or require additional information.
Sincerely,
WITHERS & RAVENEL, INC.
/~ ~-~--~
Todd Preuninger
Director of Wetlands and Biological Sciences
Attachments:
s) DWQ Request for information
I~AV E IV E L
ENGINEERS I PLANNER 5 I SURVEYOR 5
iu MacKenan Drive i Cary, NC z75ii i teL• 919.469.3340 i fax: [phone] i www.withersravenel.com
7040 Wrightsville Avenue i Suite lol i Wilmington, NC z84o3 i tel: 9io.z56.9z77 i fax: 91o.z56.z584
Brunswick Surveying i loz7 Sabbath Home Rd, SW i Supply, NC z846z i tel: 91o.84z.939z i fax: 91o.84z.8o19

`o~OF w ~ ~F9©G
~ ' ~. r
>_ 1 LJ_W`~ -_~

Coleen H. Sullins, Director
Division of Water Quality
November 28, 2007
DWQ Project # 06-1 t~~rVe~r.ty2
Wake~F~.' l J
CERTIFIED MAIL: RETURN RECEIPT REQUESTED ~th OFCO~? F~
Prs Opi
Mr. Johnny Blankenship ~ oP
ABM Associates, LLC ~LA~~`
2204-F Associates Drive
Raleigh, NC 27603
Subject Property: Associates Park II
Mills Branch [030403, 27-43-15-7, C, NSW]
REQUEST FOR MORE INFORMATION
Dear Mr. Blankenship:
On October 17, 200?, the Division of Water Quality (DWQ) received your application dated October 17,
2007, to fill or otherwise impact 46 feet of perennial stream and 3,11.0 square feet of Zone 1 Neuse River
basin protected riparian buffers and 2,304 square feet of Zone 2 Neuse River-basin protected riparian
buffers to construct the proposed office/business park. 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 have to move toward denial of your application as required by I SA NCAC 2H .0506 and
will place this project on hold as incomplete until we receive this additional information. Please provide
the following information so that we may continue to review your project.
Additional Information Requested:
There are a number of issues associated with the design of the level spreaders serving drainage
area 2:
a. The DWQ recommends revising the currently proposed design such that flow from the
drainage area is first routed to a dry detention basin and then to one level spreader. This
design would reduce the length of level spreader required to diffuse the flow and would
also eliminate the need for the scour hole and the two forebays proposed in the current
design.
b. If the applicant chooses to .retain the current proposal with two separate level spreaders,
additional details and calculations regarding the flow splitting device must be provided
for the DWQ to insure that it will operate correctly (i.e., provide the correct flows from
the one inch hour storm to each of the two level spreaders}.
c. Regardless of the design the applicant chooses, a properly designed bypass device must
be provided.
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: httpJ/h2o.enr.state.nc.us/ncwetlands
.w ~.~ . v L c.+ v ~ + ~ ~
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
No°` Cazolina
tura!!~
An Equal Opportunity/Affirmative Action Employer - 50% Recycledll0% Post Consumer Paper

ABM Associates, LLC
Page 2 of 2
November 28, 2007
2. The submittal does not include enough information for the DWQ to evaluate the level spreader
serving drainage area 5. Please provide the plan details for this level spreader (they are not on
Plan Sheet 9 as stated in the Required Items Checklist).
Please provide the following items as listed on the Required Items Checklist and provide page
numbers for these items in your resubmittal so that the DWQ can reference them efficiently.
a. An assurance that the installed system will meet design specifications upon initial
operation once the project is complete.
b. The supporting calculations.
c. A copy of the deed restriction that protects the level spreader device.
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 Ms. Cyndi Karoly or Mr. Ian McMillan at 919-733-
1786 if you have any questions regarding or would like to set up a meeting to discu this matter.
Sinc ly,
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/~m
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Todd Preuninger, Withers & Ravenel, 111 MacKenan Drive, Cary, NC 27511
061154 Ver2AssociatesParkII(Wake)On_Hald