NC0047384_Correspondence_20171031

Water Resources
E NVIHONMEN1 AL ORAL aY
October 31, 2017
Mr. Steve Drew, Water Resources Director
City of Greensboro
Box 3136
Greensboro NC 27402-3136
ROY COOPER
MICHAEL S. REGAN
S. JAY ZIMMERMAN
Subject: Additional Monitoring Requirement
T.Z. Osborne WWTP
NPDES Permit No. NC0047384
Dear Mr. Drew,
As you are aware the state has been sampling and investigating sources of 1,4 dioxane in the
Cape Fear River Basin. Sampling performed downstream of the T. Z. Osborne WWTP has shown high
levels of this contaminant. Pursuant to 15A NCAC 02B .0505 and .0508 the Division is requiring
permitted POTWs to sample for 1,4 dioxane in their plants effluent once per month using the recently
approved EPA Test Method 624.1 promulgated in the 2017 Methods Update Rule.
Monthly effluent sampling for the T.Z. Osborne WWTP NC0047384 at Outfall 001 shall commence in
December 2017 and results shall be submitted on the POTW's Discharge Monitoring Reports.
To discuss test procedures and find a lab certified to perform this updated test method please contact
Dana Satterwhite, Environmental Program Supervisor III, at 919 733 3908 ext. 202 or via email at
[e-mail].
If you have any questions, please contact me at [phone] or at my email address
[e-mail].
Sincerely,
Jeff Poupart
Water Quality Permitting Section Chief
Division of Water Resources
cc: Jay Zimmerman, Director, DWR
Julie Grzyb, NPDES Complex Permitting, DWR
Elijah Williams, Manager Water Reclamation Division, Greensboro Elijah.Williams(a;greensboro-
nc. gov
Martie Groome, Laboratory and Industrial Waste Section Supervisor, Greensboro
Martie.G roome(th,greensboro-nc. gov
Dana Satterwhite, Environmental Program Supervisor III, DWR [e-mail]
Chris Johnson, Water Sciences Section, DWR chris johnson(wncdenr.gov
George Smith, Assistant Regional Supervisor, DWR WSRO george.smithLmcdenr.gov
State of Nonh Cemili o 1 Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh. North Carolina 27699-1617
919 707 9000