NC0024210_Correspondence_20181001

ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
NORTH CAROLINA
Environmental Quality
October 1, 2018
Mr. Terry L. Houk, Public Services Director
City of High Point
P.O. Box 230
High Point, North Carolina 27261
Subject: Additional Monitoring Requirements
High Point Eastside WWTP
NPDES Permit NCO024210
Dear Mr. Houk:
As you may be aware, the state has been sampling and investigating sources of 1,4-Dioxane in the Cape
Fear River Basin. Sampling performed by the Piedmont Triad Regional Water Authority downstream of
the Eastside WWTP (Outfall 002) has shown elevated levels of this contaminant. Pursuant to 15A NCAC
02B .0505 and .0508, the Division is requiring permitted POTWs discharging elevated levels of 1,4-
Dioxane 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 1,4-Dioxane at the High Point Eastside WWTP, NCO024210, at Outfall
002 shall commence in November 2618 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 [phone] ext. 202 or via email at
dana. satterwhiteAncdenr.gov.
If you have any questions, please contact me at [phone] or at my email address
j effpoupart@ncdenr. gov.
Siuqerely,
XJefffiPoupart
Water Quality Permitting Section Chief
Division of Water Resources
cc: Linda Culpepper, Interim Director, DWR
Julie Grzyb, NPDES Complex Permitting, DWR
Dana Satterwhite, Environmental Program Supervisor III, DWR dana.satterwhiteAncdenr,gov
Chris Johnson, Water Sciences Section, DWR chris iohnson�uincdenr._gov
Tammy Hill, Water Sciences Section, DWR tammy.l.hillL&cdenr.gov
Sherri Knight, Regional Supervisor, DWR WSRO sherri.knight(d)ncdenngov
Derrickk Boone, Public Services Assistant Director derrick.boone a hi h ointnc. ov
Duane Hamby, Eastside WWTP Chief duane.hamby(&highpointnc.gov
Dawn Molnar, Eastside WWTP Superintendent Trainee dawn.molnar(a)highpointnc.gov
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11611 Mail Service Center I Raleigh North Carolina 27699-1611
919.707.3601