NC0000361_Signature Authoirty_20170914

Unimin Corporation
121 St. Andrews Ct.
Mankato, MN 56001
(Phone) 507/386-2122 (Fax) 507/386-2110
Corporate Environmental Affairs
September 14, 2017
Wastewater Branch
Water Quality Permitting Section
Division of Water Resources
N.C. Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Delegation of Signature Authority
Unimin Corporation — Schoolhouse Quartz Facility
NPDES Number NC0000361
To Whom It May Concern:
By notice of this letter, I hereby delegate signatory authority to each of the following individuals for all
permit applications, discharge monitoring reports, and other information relating to the operations at
Unimin Corporation — Schoolhouse Quartz Facility as required by all applicable federal, state, and
local environmental agencies specifically with the requirements for signatory authority as specified in
15A NCAC 213.0506.
Angela Poston Schoolhouse Quartz Plant Manager
James Byrd Schoolhouse Quartz Plant Superintendent
Steve Wilson Schoolhouse Quartz Environmental Supervisor
Daniel Garland Quartz/Feldspar Environmental Affairs Supervisor
Carl Horvat Regional General Manager
If you have any questions regarding this letter, please contact Jeff Ferguson at [phone] ext. 1602.
Respectfully,
;las $` Losee
Environmental Affairs
c: EA Files, Angela Poston, Carl Horvat, James Byrd, Steve Wilson, Daniel Garland