DEQ-CFW_00000194

Brower, Connie
From:
Brower, Connie
Sent:
Tuesday, August 08, 2017 12:46 PM
To:
Watts, Debra; Rogers, Michael; Poupart, Jeff
Cc:
Risgaard, Jon; Manning, Jeff, Ventaloro, Christopher; Grzyb, Julie; Culpepper, Linda;
Zimmerman, Jay
Subject:
RE: CFPUA letter requesting IMQD
Good morning, Debra,
Perhaps materials were not received — or the requestor did not understand his obligations. The rule goes on to say that
the petitioner shall supply the relevant tox information. It is here that the challenge arises — as, even yesterday, all of us
are struggling to identify that the information is actually available. The US EPA held a teleconference call identifying that
numerous areas within the US EPA are actively working on the issues — with a generous amount of work as yet
unresolved.
Connie
Except for tracers used in concentrations which have been determined by the Division of Public Health to be
protective of human health, and the use of which has been permitted by the Division, substances which are not
naturally occurring and for which no standard is specified shall not be permitted in concentrations at or above the
practical quantitation limit in Class GA or Class GSA groundwaters. Any person may petition the Director to
establish an interim maximum allowable concentration for a substance for which a standard has not been established
under this Rule. The petitioner shall submit relevant toxicological and epidemiological data, study results, and
calculations necessary to establish a standard in accordance with Paragraph (d) of this Rule. Within three months
after the establishment of an interim maximum allowable concentration for a substance by the Director, the Director
shall initiate action to consider adoption of a standard for that substance.
(d) Except as provided in Paragraph (f) of this Rule, groundwater quality standards for substances in Class GA and
Class GSA groundwaters are established as the least of:
(1) Systemic threshold concentration calculated as follows: [Reference Dose (mg/kg/day) x 70 kg
(adult body weight) x Relative Source Contribution (.10 for inorganics; .20 for organics)] / [2
liters/day (avg. water consumption)];
(2) Concentration which corresponds to an incremental lifetime cancer risk of 1x10-6;
(3) Taste threshold limit value;
(4) Odor threshold limit value;
(5) Maximum contaminant level; or
(6) National secondary drinking water standard.
(e) The following references, in order of preference, shall be used in establishing concentrations of substances
which correspond to levels described in Paragraph (d) of this Rule.
(1) Integrated Risk Information System (U.S. EPA).
(2) Health Advisories (U.S. EPA Office of Drinking Water).
(3) Other health risk assessment data published by the U.S. EPA.
(4) Other relevant, published health risk assessment data, and scientifically valid peer -reviewed
published toxicological data.
(f) The Commission may establish groundwater standards less stringent than existing
.02
From: Watts, Debra
Sent: Monday, August 07, 2017 2:03 PM
To: Rogers, Michael <[e-mail]>; Brower, Connie <[e-mail]>; Poupart, Jeff
<[e-mail]>
Cc: Watts, Debra <[e-mail]>; Risgaard, Jon <[e-mail]>
Subject: FW: CFPUA letter requesting IMQD
DEQ-CFW 00000194

Fyi Request for IMACS for all perfluorinated compounds discharged under NPDES NC0003573. djwatts
From: Gregson, Jim
Sent: Monday, August 07, 20171:36 PM
To: Watts, Debra <[e-mail]>; Zimmerman, Jay <[e-mail]>; Kegley, Geoff
<[e-mail]>; Risgaard, Jon <ion.risgaard ncdenr.gov>
Subject: FW: CFPUA letter requesting IMQD
Jim Gregson
Regional Supervisor
Water Quality Regional Operations Section
Division of Water Resources
Department of Environmental Quality
Wilmington Regional Office
127 Cardinal Drive Ext
Wilmington, NC 28405
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Gary McSmith [mailto:[e-mail]]
Sent: Monday, August 07, 20171:34 PM
To: Gregson, Jim <[e-mail]>
Cc: King, Morelia s <[e-mail]>
Subject: Fwd: CFPUA letter requesting IMQD
Fyi
Sent from my Verizon, Samsung Galaxy smartphone
DEQ-CFW 00000195