20090040 Ver 1_More Info Received_20090225

(-) 9-0aga
Subject: [Fwd: FW: Beacon Lake, new SMP]
From: Annette Lucas <[e-mail]>
Date: Wed, 25 Feb 2009 11:28:30 -0500
To: Bev Strickland <[e-mail]>
Queen B,
Can you please print the attachment on big paper for me?
Thanks much,
z
Subject: FW: Beacon Lake, new SMP
From: "Keith Tew" <[e-mail]>
Date: Fri, 20 Feb 2009 14:23:53 -0500
To: "Annette Lucas" <[e-mail]>
CC: "Nikki Thomson" <[e-mail]>
Good afternoon Annette, hope you are doing well.
Was just curious if you had the opportunity this week to consider the alternate conceptual SWMP (attached). I tried
illustrating the changes in color so you could distinguish them at a glance without consuming a great deal of your time. Also,
a narrative summary is provided below to supplement the graphics in an effort to streamline your review. We were hoping to
have some direction on this before responding to the REQUEST FOR MORE INFORMATION letter dated 2/12/09.
Please do not hesitate to contact Nikki or myself should you have any questions or concerns - & as always your assistance
with this project is so greatly appreciated.
Keith A. Tew, PE
BNK Wake Forest office
[phone]
From: Nikki Thomson [mailto:[e-mail]]
Sent: Tuesday, February 17, 2009 3:30 PM
To: Annette Lucas
Cc: Keith Tew; Harry Mitchell
Subject: FW: Beacon Lake, new SMP
Hi Annette!
Below, please see an email (and the attached plan) from Keith and Harry as it relates to the Beacon Lake site
and alternative SMP design. Keith's narrative explains it better than I ever could.
We wanted your input before we proceeded any further at this point; this site has certainly become
challenging!
Thanks in advance for your help and comments.
Nikki
From: Keith Tew [mailto:[e-mail]]
Sent: Friday, February 06, 2009 2:26 PM
To: Nikki Thomson
Cc: harry. m [e-mail]; [e-mail]
Subject: Beacon Lake, new SMP
Nikki,
As I indicated in a previous email, our negotiations with the COR concerning the Filterra product have been
unsuccessful to date. Although staff has authority to "think outside the box", they only seem to be interested in
considering the traditional BMPs described in the DWQ manual. While they did not completely shut the door on
Filterra, our sense was that the implementation of any proprietary device would be a very tough road to travel at City
Hall - & that it would certainly take a much longer time than we can afford on this particular project.
This has challenged us to be a little more creative with our planning & design strategies. In this case I think we've
actually found a storm pipe layout that makes our post-developed drainage areas less than the 24% impervious
threshold, thereby eliminating the need for water quality treatment altogether. This was done primarily by combining
the street drainage system with the offsite by-pass outfalls. In effect this increases the watershed areas while
decreasing % impervious at the same time. A revised stormwater management sketch is attached. Can you please
forward this email to Annette for a very quick & preliminary review? We would like to have some idea that this line
of reasoning is acceptable to DWQ before we expend a great deal of time & effort in the associated redesign &
supporting calculations.
As a matter of clarification though, will the diffuse flow exemptions previously granted for these discharge points
remain valid under this scenario? I think this proposal continues to demonstrate our attempt to maintain the
pre-developed drainageway patterns across the site to the maximum extent possible.
Thanks for your continued assistance with this project.
Keith A. Tew, PE
Bass, Nixon & Kennedy, Inc.
3319 Heritage Trade Drive, Suite 201
Wake Forest, NC. 27587
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Content-Type: message/rfc822
FW: Beacon Lake, new SMP
Content-Encoding: 7bit
Content-Description: Conceptual SMP Alternative.PDF
Conceptual SMP Alternative.PDF' Content-Type: application/octet-stream
Content-Encoding: base64
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