20110582 Ver 1_Staff Comments_20110713

Lucas, Annette
From: Lucas, Annette
Sent: Wednesday, July 13, 2011 12:00 PM
To: Homewood, Sue
Cc: Lucas, Annette
Subject: 11-0582 JT Russell Ethanol Transfer Facility
Attachments: 11-0582 JT Russell Ethanol Transfer Facility.docx
Hi Sue,
I got this reviewed. I had a pretty lengthy chat with Patrick Blanchard today about the sand filter concept and I think he
and I are on the same page. I encouraged him to draw up an alternative approach and send me a pdf to review before
they resubmit. The bioretention and LS-VFS were designed by Granseur Dick and they look really good, just one minor
comment. No need to return my message from earlier in the day unless you want to discuss.
Thanks,
A
Annette M. Lucas, PE
Environmental Engineer
NCDENR DWQ Wetlands and Stormwater Branch
1650 Mail Service Center, Raleigh, NC 27699-1650 J id)
512 N. Salisbury St, Raleigh, NC 27604 1 91h Floor .Il if,n l-.
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1
11-0582 JT Russell Ethanol Transfer Facility
AML comments
July 13, 2011
1. The DWQ does not approve the use of sand filters as spill containment facilities. As an
alternative, we recommend that you provide a spill containment basin prior to stormwater
being discharged for treatment into a BMP that provides 85% TSS removal. A sand filter would
be appropriate but you could also consider the use of a bioretention cell, which will provide the
added benefit of biological pollutant removal. Please insure that the design for the BMP you
propose meets the minimum measures listed in the BMP Manual.
2. Per Chapter 8 of the BMP Manual, the vegetated filter strip should be sodded, not seeded.