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Re: Smith Creek Nationwide Permit 12 and DWQ Permit 42007-0479 Pagel of 2
From: Cyndi Karoly [[e-mail]]
Date: Apr 30, 2008 12:26
To: "Shern, James F SAW"<[e-mail]>
"Dramby, Shearin"<[e-mail]>, <[e-mail]>,
Cc: "Guttridge, Paul"<[e-mail]>, "Waldroup,
Kenneth"<[e-mail]>, <[e-mail]>
Subject: Re: Smith Creek Nationwide Permit 12 and DWQ Permit #2007-0479
Shearin - as with the 404 Permit per Jamie's note below, you're
authorized to proceed with the General Certification issued previously.
We'll put this email message, along with an additional one you sent
following the recent rains, into the 401 file for our records. Thanks.
Rich - please add to file.
Shern, James F SAW wrote:
> Shearin, I like the idea of performing the pipe installation during
> low flow conditions. You have provided information that documents the
> utilization of trenchless technologies is not practicable. I
> understand that the installation will be done by dewatering with
> portadams in two phases with '/2 to 2/3rds of the total width between
> the banks being obstructed (dewatered) at a time. This will leave
> about 40+ feet open at all times for the passage of aquatic critters.
> I would think that this is adequate but am CCing the experts at the
> NCWRC just to make sure they don't have any concerns about compliance
> with the "aquatic life movements" condition (General Condition 2) at
> this time of year.
> The pipes will be installed by digging a trench to --6 feet below the
> bed of the river, encasing them in concrete, and then restoring the
> preconstruction river bed elevation by backfilling with the excavated
> substrate. The pipes will cross under the Neuse River on the eastern
> side of its first meander east of US 1 (approximately 6,400 stream
> feet downstream of US 1).
> Otherwise, you are authorized to proceed in reliance on NWP 12. The
> Corps project number is SAW-2007-03299.
> Jamie Shern
> Regulatory Specialist
> US Army Corps of Engineers
> `From:* Dramby, Shearin [mailto:[e-mail]]
> *Sent:* Thursday, April 24, 2008 3:52 PM
> *To:* Shern, James F SAW; Cyndi Karoly
> *Cc:* Guttridge, Paul; Waldroup, Kenneth
> *Subject:* Smith Creek Nationwide Permit 12 and DWQ Permit #2007-0479
> Good afternoon Cyndi and Jamie:
> Last year, the City of Raleigh Public Utilities Department submitted a
> courtesy PCN for a USACE Nationwide 12 permit and corresponding 401
> General Certification GC3374 for installation of a pipeline from the
> Smith Creek WWTP to the Neuse River Interceptor. The USACE and DWQ
> subsequently approved temporary impacts associated with installing the
> pipeline within a 40-foot construction corridor via an open cut
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Re: Smith Creek Nationwide Permit 12 and DWQ Permit #2007-0479
> installation. No permanent impacts to waters of the U.S. (WOUS),
> including wetlands, were required for the proposed project. Temporary
> impacts to 40 linear feet of the Neuse River and associated buffer
> were proposed for an open cut installation of the pipelines.
> In order to minimize impacts to WOOS, the pipelines were proposed to
> be installed in the dry by utilizing temporary coffers dams.
> Currently, a temporary Portadam will be used in place of the
> previously proposed coffer dams. This system serves the same purpose
> as coffer dams; however, they require fabric and sandbags on the
> bottom of the river outside of the 40-foot construction easement.
> These systems are less invasive and should minimize disturbance to the
> river bottom. Portions of the Portadam (see attachment) will be
> located outside of the 40-foot easement; however, construction
> disturbance will be limited to the previously permitted 40-foot-easement.
> Please accept this email as notification of this planned change. Since
> the river flow is currently low, installation of the Portadam is
> scheduled to begin on Tuesday, April 29, 2008. Should you have any
> questions or concerns, please contact me.
> Thank you and have a wonderful day,
> J. Shearin Dramby
> Regulatory Specialist
> 5410 Trinity Road
> Palisades II, Suite 320
> Raleigh, NC 27607
> Direct Phone: [phone]
> Office Phone: [phone]
> Fax: [phone]
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