NC0000175_Signature Authority_20171116

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Unimin Corporation
121 St. Andrews Ct.
Mankato, MN 56001
(Phone) 507/386-2122 (Fax) 507/386-2110
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 — Quartz/Feldspar Facility
NPDES Number NC0000175
To Whom It May Concern:
Corporate Environmental Affairs
November 16, 2017
RECEIVEMCDEQ/M
NOV 21 2017
Water Quality
Permitting Section
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 — Quartz/Feldspar 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.
Jon Taylor Quartz/Feldspar Plant Manager
Daniel Garland Quartz/Feldspar Environmental Affairs Supervisor
Angela Poston Schoolhouse Quartz Plant Manager
Steve Wilson Schoolhouse Quartz Environmental Supervisor
Carl Horvat Regional General Manager
If you have any questions regarding this letter, please contact Jeff Ferguson at [phone] ext. 1602.
Respectfully,
UNIMIN C TI
Dou s S. Losee
V. . Environmental Affairs
C. EA Files, Jon Taylor, Angela Poston, Carl Horvat, Daniel Garland, Steve Wilson