20121052 Ver 1_Triage Comments_20121130

Triage Comment Sheet
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Reviewer 2
Reviewer 3 (�f i lU )\Ilo,�n t�✓
Date:
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Date:
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S \SWP -Non Point Source\Shared for Wetlands (Archdale) \Triage Forms \Triage Issue Sheet_2012.doc

Lucas, Annette
From: Lucas, Annette
Sent: Wednesday, December 12, 2012 1:22 PM
To: Higgins, Karen
Subject: 12 -1052 520 & 524 Lakestone Drive
Attachments: 12 -1052 520 & 524 Lakestone Drive — NB AUTHORIZATION CONDITION.docx
Karen,
I have reviewed this project and I approve it. I think the increase in stormwater pipe capacity falls under the allowable
"protection of existing structures" use in the Neuse buffer rule. The design looks reasonable to me as well.
I have attached a condition to require them to inspect the outfalls regularly and correct any erosion issues that may
occur.
Thanks,
A
Annette M. Lucas, PE
Environmental Engineer
NCDENR I DWQ I Wetlands and Stormwater Branch
1650 Mail Service Center, Raleigh, NC 27699 -1650 (Mail)
512 N. Salisbury St, Raleigh, NC 27604 1 9th Floor (Location & Parcels)
Phone: [phone] Fax: [phone] Email: Annette. Lucasamcdenr.gov
Website: http: / /portal.ncdenr.org/webIM/§ plws /401
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12 -1052 520 & 524 Lakestone Drive — NB AUTHORIZATION CONDITION
AML comments
December 12, 2012
Stormwater Outlet Maintenance
The outlet of the stormwater pipes shall be inspected quarterly. If any of the problems listed
below are observed, then they shall be remediated as follows.
Potential problem:
How the problem shall be remediated:
The pipe is clogged.
Unclog the pipe. Dispose of the sediment off -site.
Areas of bare soil and/or erosive
Regrade the soil if necessary to remove the gully, and then
gullies have formed at or around
restabilize the area with rip rap.
the discharge point.
Trash/debris is present.
Remove the trash/d-ebris.
The pipe is cracked or otherwise
Replace the pipe.
damaged.
A significant amount of
Search for the source of the sediment and remedy the problem
sediment has accumulated.
if possible. Remove the sediment and dispose of it in a
location where it will not cause impacts to streams or the
outlet area.