NC0023906_staff comments_20030725

Wilson - Hominy Creek
Subject: Wilson - Hominy Creek
Date: Fri, 25 Jul 2003 16:07:03 -0400
From: Susan A Wilson <[e-mail]>
Organization: NC DENR DWQ
To: Rob Brown <[e-mail]>
Rob -
As an addendum to my memo dated July 1, 2003, the NPDES Unit has no
further comments on the 201 plan for Wilson and hopes that the
modifications will allow the City to comply with the more stringent
NH3-N limits by July 2004.
As for the chlorination - the NPDES Unit will continue to put Condition
A.(6.), regarding fecal coliform limit compliance, in subsequent
renewals unless there is a modification to the chlorination basin in the
future.
1 of 1 8/18/03 3:34 PM

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P. E. Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
July 7, 2003
MEMORANDUM
TO: Hannah Stallings
Department of Environment and Natural Resources
FROM: Alex Marksj. `
Division of Water Quality, Water Quality Section
JUL -72003
L
:a f;U L!TY
BRkiCH
SUBJECT: Hominy Creek. WWMF Upgrade and Expansion/ 201 Facilities Plan
DWQ# 13185
Thank you for sending us a revised draft of the subject document on 3 June 2003. Comments from the
Division's NPDES Unit are attached. Please contact Ms. Susan Wilson directly if you have any questions
regarding her comments.
I may be contacted at 919.733.5083 x555. Thank you.
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 [phone]
Customer Service
1-877-623-6748 -

1Pr
To: Alex Marks
Local Government Assistance Unit
DIVISION OF WATER QUALITY
July 1, 2003
From: Susan A. Wilson, Environmental Engineer
NPDES Unit
Subject: City of Wilson - 201 Facilities Plan (September, 2002)
NPDES No. NC0023906
Wilson County
1 have briefly reviewed the 201 Plan submitted by Hazen & Sawyer on behalf of the City
of Wilson [September 2002, Revised May 20031.
It appears that the facility will not be expanding beyond 14 MGD (20 year projected
flow) and this document reflects only conditions for 14 MGD. The City is currently
permitted for 14 MGD, so the NPDES Unit has no further comments on this portion of
the 201.
The NPDES Unit still raises the concern regarding hydraulic retention time for chlorine
contact. Although the contact time is estimated as 45 minutes - it appears that the
"contact tanks" are used for chlorination, dechlorination, and post aeration. Once
again, we encourage the City to implement additional true chlorine contact time.
Likely, if this is not done, the language in Condition A. (6.) of the NPDES permit will be
continued with the next permit renewal (and future permit cycles).
cc: Ken Schuster, RRO/WQ
Central Files
NPDES Unit