20020468 Ver 1_Staff Comments_20081121

Re: 02-0468 Brier Creek Country Club Phase 15 - Land Bay NOV
Subject: Re: 02-0468 Brier Creek Country Club Phase 15 - Land Bay NOV
From: Lauren Cobb <[e-mail]>
Date: Fri, 21 Nov 2008 12:35:01 -0500
To: Annette Lucas <Annette. Lucas@NCMail. net>
awesome comments. i will get the letter out Monday.
Thanks so much,
Lauren
Annette Lucas wrote:
Hey Lauren!
Here's my two cents. . .
Annette
Lauren C. Witherspoon
Environmental Senior Specialist
NC Division of Water Quality
Surface Water Protection
1 of 1 11/21/2008 12:46 PM
02-0468 Brier Creek Country Club Phase 15 - Land Bay NOV
AML Comments
November 21, 2008
Device behind lot 714:
The Duraslot pipe appeared to be working fairly well. Please check the elevations to
determine if it is level and make any necessary adjustments to make the device level. In
addition, please repair the small area of erosion on the north side of the pipe.
Device behind lot 726:
The Duraslot pipe was installed in a different location than what was indicated on the
plans; please provide updated plan sheets. Some adjustments need to be made to this
device in order for it to function properly. It appears that little if any stormwater is
reaching this device because vegetation has grown over most of the slots in the pipe. In
addition, the Duraslot pipe was set in a low point between two grades, which will make it
difficult if not impossible for it to discharge stormwater. Please analyze the flow splitter
device to see if it is designed and maintained properly to send the one inch per hour storm
to the Duraslot pipe. Please also regrade the area downslope of the Duraslot pipe (and
revegetate) to ensure that diffuse flow can occur.
Device behind lots 737 and 738:
The DWQ cannot accept an offset payment in lieu of providing an appropriate nitrogen
removal device because this approach does not comply with the Neuse Buffer Rule's
Table of Uses, 15A NCAC 213 .0233. Per this table, the new drainage ditch you are
proposing to create through the buffer must be equipped with a stormwater management
facility to control nitrogen and attenuate flow prior to the conveyance discharging
through the riparian buffer. If you want to create a new drainage ditch through the buffer
without providing a stormwater management facility, then this will require a major
variance from the EMC. Before DWQ staff would recommend approval of a major
variance, it would be necessary for us to see a good faith effort to provide stormwater
management at this location.