NCG020032_COMPLETE FILE - HISTORICAL_20171116

STORMWATER DIVISION CODING SHEET
RESCISSIONS
PERMIT NO.
Af G O �-O 63 2-
DOC TYPE
❑COMPLETE FILE -HISTORICAL
DATE OF
RESCISSION
❑
YYYYMMDD

d aq;
Unimilm
•°i � � iiii�i
>y� Cot"rate En vire n reata! Affairs
Unimin Corporation
121 St. Andrews Ct.
Mankato, MN 56001
(Phone) 507/386-2122 • (Fax) 507/386-21 10
November 16, 2017
Stormwater Program
Division of Energy, Mineral, and Land Resources
N.C. Department of Environmental Quality
512 N. Salisbury Street
1612 Mail Serviec Ccnter
Raleigh, NC 27699-1612
Subiect: Delegation of Signature Authority
Unimin Corporation — Green Mtn. Facility 1
Gen. NPDES Number NCG020032
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 — Green Mtn. Facility 1 as required by all applicable federal, state, and local
environmental agencies specifically with the requirements for signatory authority as specified in 40 CFR
122.22,
Jon Ta for
aniel Garland
An aela Poston
Steve Wilson
Carl Horvat
Quartz/Feldspar Plant Manager
Quartz/Feldspar Environmental Affairs Supervisor
Schoolhouse Quartz Plant Manager
Schoolhouse Quartz Environmental Supervisor
Regional General Mana Yer
If you have any questions regarding this letter, please contact Jeff Ferguson at [phone] ext. 1602.
Respectfully,
UN1M O
Do alas S. Losee
P. Environmental Affairs
c: EA Files, Jon "Taylor, Angela Poston, Carl H{orvat, Daniel Garland, Steve Wilson

1�
u n i m i n
Corporate Environmental flffairs
Unimin Corporation
121 St. Andrews Ct.
Mankato, MN 56001
(Phone) 507/386-2122 - (I-'ax) 507/386-21 10
September 14, 2017
Stormwater Program
Division of Energy, Mineral, and Land Resources
N.C. Department of Environmental Quality
512 N. Salisbury Street
1612 Mail Service Center
Raleigh, NC 27699-1612 RECEIVED
Subject: Delegation of Signature Authority SEP 19 2017
Unimin Corporation —Green Mtn. Facility 1
Gen. NPDES Number NCG020032 DENR-LAND QUALITY
STORMWATER PERMITTING
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 — Green Mtn. Facility 1 as required by all applicable federal, state, and local
environmental agencies specifically with the requirements for signatory authority as specified in 40 C1=R
122.22.
Angela Poston Quartz/Feldspar Plant Manager
Daniel Garland Quartz/Feldspar Environmental AI airs Supervisor
Steve Wilson Schoolhouse Quartz. Environmental Supervisor
Carl Horvat Regional General Manager
If you have any questions regarding this letter, please contact Jeff Ferguson at (828) 765-1 1 14 ext. 1602.
Respectfully,
UNIM
(glas S. Losee
. Environmental Affairs
EA Files, Angela Poston, Carl Horvat, Daniel Garland, Steve Wilson

MIR
Energy, Mineral
and Land Resources
ENVIRONMENTAL QUALITY
April 8, 2016
Unimin Corporation
Attn: Jeff Ferguson
136 Crystal Drive
Spruce Pine, NC 28777
PAT MCCRORY
(nwrrnur
DONALD�"#. VAN DER VAART
Secrerary
TRACY DAVIS
Vimcrnr
SUBJECT: Exemption from Monitoring During Dormant Status
Certificate of Coverage #NCG020032
Unimin Corporation --- Daybook Mine — (Green Mountain Plant # 1)
Yancey County '"'lr
Dear Mr. Ferguson:
A Compliance Evaluation Inspection performed at the Daybook Mine (Green Mountain Plant #1) on March 4, 2016,
by personnel from this office verified that no industrial activity was taking place at the tit q"pf the inspection. Your
recent request to keep the NCG020032 permit, but to discontinue stormwater monitoring is hereby approved based on
the following conditions:
There shall be no industrial activities taking place, no stockpiles of raw materials (to include chemical
additives) stored on the site, or wastewater or stormwater industrial discharges while the permittee is not
monitoring.
No wastewater shall be generated and all wastewater treatment units, if any, shall be cleaned and stabilized,
and inactivated as to render them harmless to the environment while the site is dormant.
The Stormwater Pollution Prevention Plan (SPPP) shall be kept updated to reflect the status of the facility.
Updates and conditions of the SPPP of note are:
o The BMP Summary shall be reviewed and updated annually.
o Training programs shall be developed and training provided at least once a year for facility
personnel with responsibilities for:,spill response and cleanup, preventative maintenance
activities, and for any of the facility's operations that have the potential to contaminate
stormwater runoff,
o All aspects of the Stormwater Pollution Prevention Plan shall be'reviewed and updated on an
annual basis. The annual update shall include an updated list of significant spills or leaks of
pollutants for the previous three years, or the notation that no spills have occurred. The
annual update shall include written recertification that the stormwater outfalIs have been
evaluated for the presence of nonstormwater discharges. (ShouIdT on-stormwater discharges
be discovered the permittee shall contact this office as soon a plc�sible but in no case greater
than 24 hours or the next business day).
a Inspections of the facility and all stormwater systems shall occur as part of the Preventative
Maintenance and Good Housekeeping Program at a minimum on a semi-annual schedule.
State of North Carolina I Environmental Quality I Energy, Mineral and Land Resources
2090 US 70 Highway I Swannanoa, NC 28778.8211
829 296 4500 T

r
Unimin Corporation, Buna Mine
April 8, 2016
Pave 2 of 2
• Qualitative and analytical monitoring actions as described in Part IDI, Sections A, B, C, D, and E do not
have to be condugtpd — as long as the above conditions and all other permit conditions and limitations are met,
including:
o :. The annual permit fee must be paid, failure to pay the annual permit fee will be
considered a violation of the subiect permit. I
• This office must be notified in writing and all components of the stormwater permit requiring updates made at
least 30 days prior to commencing any industrial activity on the site, even if they are temporary.
• A copy of this letter must be maintained with the facility permit and associated plans and records for the life
of the permit.
Should you have any questions, please contact Shawna Riddle or me at 828-206-4500.
Sincerely,
,rf Stanley E. Aiken, PEGn
Regional' Engineer
Land Quality Section
Enclosure: Inspection Report
ec: Ken Pickle, Stormwater Permitting
PH

Compliance Inspection Report.
Permit: NCG020032 Effective: 10/01/15 Expiration: 09/30/20 Owner: Unimin Corporation
SOC: Effective: Expiration: Facility: Unimin Corp -Green Mountain Plant#1
County: Yancey Hwy 197 N
Region: Asheville
Green Mountain NC 28740
Contact Person: Jeffrey S Ferguson Title: Phone: [phone] l4 Ext.1602
Directions to Facility:
System Classifications:'
Primary ORC: Certification: Phone:
Secondary ORC(s):
On -Site Representative(s):
24 hour contact name Jeff Ferguson 828-765-4283
Related Permits:
Inspection Date: 03104/2016 Entry Time: 10:OOAM Exit Time: 11:OOAM
Primary Inspector: Shawna Riddle 41k_� Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Typo: Compliance Evaluation
Permit Inspection Type: Mining Activities Stormwater Discharge COC
Facility Status: Compliant Not Compliant
Question Areas:
Storm Water
(See attachment summary)
Page: 1

r
permit: NCG020032 Owner - Facility: Unimin Corporation
Inspection Date: 03/0412016 Inspection Typo: Compliance Evaluation Reason for Viatt: Routine
Inspection Summary:
I inspected the site with Jeff Ferguson and Daniel Garland, both with Unimin.
The Daybook Mine (Green Mountain Plant #1) is not active and had no activity occurring. The site is being monitored and
maintained. The mine has an inactive permit with DLR and is in compliance. Site visit was to discuss requesting dormant
status to discontinue stormwater monitoring.
We discussed that the annual stonnwater permit fees will still need to be paid, and if at any time the mine wants to start
back up a request would need to be submitted to return to active status..
I suggested to Jeff that he submit his request in writing. We received the request on March 21, 2016. 1 recommend granting
dormant status for the site.
Page: 2

Permit: NCG020032 Ownar - Facility: Unimin Corporation
Inspection Date: 03104/2010 Inspection Type : Compilance Evetuafion Reason for Visit• Routine
StormwatGr Pollution Prevention Plan
Does the site have a Stormwater Pollution Prevention Plan?
❑ ❑ ❑
# Does the Plan include a General Location (USGS) map?
0 ❑ ❑ ❑
# Does the Plan include a'NarrWive Description of Practices?
M ❑ ❑ ❑
# Does the Plan include a detailed site map including outfall locations and drainage areas?
M ❑ ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years?
M ❑ ❑ ❑
# Has the facility evaluated feasible altematiyes to current practices?
0 ❑ ❑ ❑
# Does the facility provide all necessary secondary containment?
M ❑ ❑ ❑
# Does the Plan indude a BMP summary?
0 ❑' ❑ ❑
# Does the Plan indude a Spill Prevention and Response Plan (SPRP)?
M ❑ ❑ ❑
# Does the Plan Include a Preventative Maintenance and Good Housekeeping Plan?
0 ❑ ❑ ❑.
# Does the facility provide and document Employee Training?
❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
❑ ❑ ❑
# Is the Plan reviewed and updated annually?
❑ ❑ ❑
# Does the Plan Include a Stormwater Facility Inspection Program?
0 ❑ ❑ ❑
Has the Stormwater Pollution Prevention Plan been implemented?
0 ❑ ❑ ❑
Comment:
Qualitative Monitoring Yes No NA NE
Has the facility conducted Its Qualitative Monitoring semi-annually? M ❑ ❑ ❑
Comment:
Analytical Monitorinn Yes No NA NE
Has the facility conducted Its Analytical monitoring? ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas? ❑ 110 ❑
ti
Comment:
Perm It and Outfa lie XU yQNA NE
# Is a copy of the Permit and the Certificate of Coverage available at the site? ❑ ❑ ❑
# were all cutfalls observed during the Inspection? ❑ ❑ ❑
# If the facility has representative outfall status, is it property documented by the Division? ❑ ❑ e ❑
# Has the facility evaluated all Illicit (non stormwater) discharges? M ❑ ❑ ❑
Comment:
Page: 3

Amrli;WA
NCDENR
irnnw>..EN _D N: un­ Re9 RCCS
Division of Energy, Mineral and Land Resources
Land Quality Section / Stormwater Permitting Program
National Pollutant Discharge Elimination System (NPDES)
PERMIT OWNER AFFILIATION DESIGNATION FORM
(Individual Legally Responsible for Permit)
Use this form if there has been:
17OR AGENCY Use ONLY
Dare Rcceiled
Ycar
Month
Ua y
NO CHANGE in facility ownership or facility name, but the individual
who is legally responsible for the permit has changed.
If the name of the facility has changed, or if the ownership of the facility has changed,
do NOT use this form. Instead, you must fill out a Name -Ownership Change Form
and submit the completed form with all required documentation.
What does "legally responsible individual" mean? The person is either: RECEIVED
• the responsible corporate officer (for a corporation); 6FI 118, YDsC
• the principle executive officer or ranking elected official (for a FnLu4ipallty, sfate, federal or other public
agency); P�Y1 -A': Q
• the general partner or proprietor (for a partnership or sole pivprietiir'skiip);Fs,h;, (��
• or, the duly authorized representative of one of the above.
1) Enter the permit number for which this change in Legally Responsible Individual ("Owner Affiliation")
applies:
Individual Permit
N I C I S
2) Facility Information:
Facility name:
Company/Owner Organization:
Facility address:
(oil Certificate icate of Coverage
N I C G 1 0 1 2 1 0 0 3 2
Unimin Corporation - Green Mountain Plant #1
Unimin Corporation
Hwy 197 N
Address
Green Mountiain NC 28740
City State Zip
To find the current legally responsible person associated with your permit, go to this website:
http://portal.ncdenr.org/web/lr/sw-perinit_contacts and run the Permit Contact Summary Report.
3) OLD OWNER AFFILIATION that should be removed:
Previous legally responsible individual: Andrew G. Bradley_
First MI Last
4) NEW OWNER AFFILIATION (legally responsible for the permit):
Person legally responsible for this permit: Richard M. Solazzo
First MI Last
Page I of 2
SWU-OWNERAFFI L-25Ju1y2014

<p
NPDES Stormwater Permit OWNER AFFILATION DESIGNATION Form
(if no Facility NamelOwnership Change)
Sr. V.P./Environmental Affairs
Title
258 Elm Street
Mailing Address
New Canaan CT 06840
City State "lip
{ 203 ) 966-8880 rsolazzoaunimin.com_
Telephone P-inktil Address
( 203 ) 966-1977
Fax Number
S) Reason for this change-.
A result of. ® Employee or management change
❑ Inappropriate or incorrect designation before
❑ Other
ff other please explain:
The certification below must be completed and signed by the permit holder.
PERMITTEE CERTIFICATION:
1, Richard M. Solazzo , attest that this application for this change in Owner Affiliation
(person legally responsible for the permit) has been reviewed and is accurate and complete to the best of my
knowledge. I understand that if all required parts of this form are not completed, this change may not be
processed.
Si na ure Date
PLEASE SEND THE COMPLETED FORM TO:
Division of Energy, Mineral and Land Resources
Stormwater Permitting; Program
1612 Mail Service Center
Raleigh, North Carolina 27699-1612
For more information or staff contacts, please call 919-707-9220 or visit the website at:
hitp://Vomal,ncdenr.oE, web/lr/stormwater
SN1U-OWNERAFFI L-25July2014
Page 2 of 2

UNIMIN
Unimin Corporation
258 Elm St.
New Canaan, CT 06840
(Phone) 800/223-2236 • (Fax) 203/966-0351
Wastewater Branch
Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh, NC 27699-16I7
Corporate Envirownental Affairs
February 9, 2015
Subject: Delegation of Signature Authority
Unimin Corporation --- Green Mtn. Facility l
NPDES Number NCG020032
'fo Whom it May Concern:
RECEIVEDIDENR/MAIR
E=EP 18 2015
Water Quality
Permittinq Sectior
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 - Green Mtn. Facility 1 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.
Doug Myers ^_ Quartz Plant Manager
Steve Wilson Quartz Environmental Supervisor
Mike Vencill Regional General Manager
If you have any questions regarding this letter, please contact Jeff Ferguson at [phone] ext. 1602.
Respectfully,
UNIMIN CORPORATION
Andrew �GBradley
a4l."-
SVP/Environmental Affairs
CC: EA Fifes, Doug Myers, Steve Wilson, Mike Vencill
NCDWR Asheville Regional Office, 2090 U.S. Hwy. 70, Swannanoa, NC 28778
Water Quality Permitting Section, 1617 Mail Service Center, Raleigh, NC 27699-1617

ttn
Alexonder, Laura
From:
Sent:
To..
Subject:
#5, last oa fer our tE6t ii;3tch,
Georgoulias, Bethany
Friday, June 27, 201412,42 PM
Alexander, Laura
FW, Change Requests to Storm4vater permit Contacts
f�elhrTny GG�r1T�grairTl�,�, E111��T+(IT1lIIG'T'T1U( �11�*i1Trs�r.
NCDENR / Division of Unergy, Minerul, and{ band ltc;sources
Storrnwawr NoTflaing Prugrijm
161; Mail Sci,vicc Center, Raleigh, NC 27699-1612
512 N. SalisbLtry Stroet, Raleigh, NC ?7604
9 19 / 807,6372 (phone): 919 / 807.6494 (rax)
Website: r I n icnr.n T`lrlfi r wae�
I;-rmrif euT ri xpnr+dune, Tn w0 f any to the Nardi Carnlinu Public FeC m& law unit mqv be disck!cd to Third pagies.
From: Jeff Ferguson fm� to;�F�rg�_rl cour�R_�in.com�
gent: Frldey, May 30, 20i 4 1:21 PM
To., Si/C DENR.stormwater
Subject: Change Requests to Stormwater Permit Contacts
,_Please change the following contacts for each applicable facility:
/L�C-G0=2062-(GFe—en K45i ?lant
Charm lPa�ty Contact fironi Larry, McGlit mphyiaddress!pbone to
Steve Wilson 7638 NC 14wy 226, Spruce Pine, NC 28777 ph 828-765-4283 fax [phone] entail:
swilsott �r�unimin.cont
�Cha J%Pernut Contact (Ferguson) phone to $28-765-1114 ext. 1602, also please change email to
'f •� 11ir,untntill.com
CNCG0202'73(ut> Miti�
Ads! Facility Contact �
Steve Wilson 7638 NC Hwy 226, Spruce Pine, NC 28777 ph 828-765-4283 fax [phone] entail:
swi ji,uniniin.cornn,cont
v Change Pori -nit Contact (Charles Dean Beam) to
Jeffrey S Ferguson PE, 136 rystal Drive, Spruce Pine, NC 28777 ph 828-765-1114 ext.
4755 email: i fergu5un,,,cQ,tta_ n min.com
NCG020007 (Marston):
Add entail to facility Contact (Joe Howell): add jhowell IIIim n.cojrt
1602 fax 828-765-

ellangu Permit Contact (Verguson) phone to 828.765.1114 ext. 1602, alstj plausc change email to
'ler usoWiunin i►i.coni
CGOO, 3-(Quartz 0 ration):
Remove Jeffrey S Ferguson as Facility Contact
Add JctTrey $ Ferguson as .Permit Contact;
Jeffrey 5 l�erguson PF,, 136 Crystal Drive, Spruce Pirie, NC 28777 ph 828-765-1114 ext. 160- It 828-765-
4755 email, 'f •r ison a unimin.com
/��NCG020.l 57(Sclxoolhouse_Quartz),
Acid Jeffrey S Ferguson as Permit Contact:
Jeffrey S Ferpson PE, 136 Crystal Drive, Spruce Pine, NC 28777 ph 829-765-1114 ext. 1602 fax 828-765-
4755 email: ifergusonQ.unirnii Boni
Thunk you very much for your help with this matter,
,left

O� W ArF� Beverly Laves Perduc, Governor
El
JILE C Dce Freeman, Secretary
q arch Caroiina Deparinteol of Environment and Natural Resources
Coleen H. Sullins, Director
{y C Division of Waicr Quality
SURFACE WATER PROTECTION R 0 S Zelti-e_s�
t r,
January 28, 2009
Jeff Ferguson
Unimin Corporation
136 Crystal Drive
Spruce Pine, North Carolina 28777
SUBJECT: NPDES Stormwater Permit Compliance Inspection
Unimin Corp -Green Mountain Plant#1
Permit No: NCG020032
Yancey County
Dear Mr. Ferguson:
`Phis letter is in follow-up to the NPDES Stormwater Permit Compliance inspection conducted on
December 16, 2008. The facility was found to be out of compliance with permit NCG020032.
The primary Issue was the sediment (product) being discharged to Mine Creek.
Enclosed is a copy of the Compliance Inspection Report, which contains additional observations
and canlments for your reference.
Please contact me at [phone] or chuck.cranford a,ncmail.rlet, after you receive this letter
and provide an update on efforts to resolve the situation.
Sincerely,
Chuck Cranford
lallvironniental Specialist
Surface Water Protection
cc: Central Files
'nslicville.>�ilcs '�h�'
No the trolina
�1��rlyrra!!�
Norllh Carolina Division or-Waler Quality 2090 U.S. [ lighway 70 Sw,uinanoa, NC 28778. Phone [phone], CU51 MU Servici
.Internot: www.ncwatciquality.org FAX[phone] t-877.623-6748
An Equal OpportunitylAlfirmalive Action Employer -• 50% Recyciedll 0% Post Consumer Paper

Compliance Inspection Report
Permit: NCG020032 Effective: 01/19/05 Expiration: 12131109', ':' Owrier: Unimin Corporation
SOC: Effective: Expiration: Facility: Unimin Corp -Green Mountain Plant#1
,fatuity: Yancey Hwy,197 N
Region: Asheville
Green Mountain NC 28740
Contact Person: Jeffrey S Ferguson Title: Phone: [phone] Ext,13
Directions to Facility: ;
System Classifications:
Primary ORC: Certification: Phone:
Secondary ORC(s):
On -Site Representative(s):
Related Permits:
Inspection Date: 1211612008. Entry Time: 10:00 AM Exit Time: 11:00 AM
Primary Inspector: Chuck Cranford Phone:
Secondary Inspector(s):
Reason for Inspection: Routine Inspection Type: Compliance Evaluation
Permit Inspection Type: Mining Activities Stormwater Discharge COC
Facility Status: ❑ Compliant ® Not Compliant
Question Areas:
® Storm water
(See attachment summary)
Page: 1

Permtt: NCG020032 Owner Faeillty: llnimin Corporation
Inspection Date: 42/IGI2008 "i`... r; Inspect lon'Type: Compliance Evaluation Roason for Visit: Routine
Inspecliori Suinniiry,
;:-
7he inspector_reviewe¢the SPPP, nd toured the site with Jeff Ferguson. Qveiaq, the site is following good housekeeping
and main tenance.practices and `meeting permit monitoring requirements. The inspector and Mr. Ferguson identified a
sediment discharge of product to Mine Fork Creek impacting the receiving stream. This is a permit compliance issue. Mr.
Ferguson indicated there are plans to modifylexpand the facility and the company would strive to change the existing
conditions to prevent such losses permanently. Until then housekeeping practices will be increased.
Prior to this inspection, the permittee had requested Representative Otitfall Status (ROS) for this facility. Until the site
gains full compliance with the permit, the inspector determined approving ROS to be impractical.
Page: 2

:Permit: NC6020032 • 'Owner - Facility: Unimin Corporali6
Inspection Date: 12/1612008 - - Inspection Type: Compliance Evaluation Reason for Visit: Routine
Stormwater Pollution Prevention Plan Yes No NA NE
Does the site have a Stormwater Pollution Prevenfion Flan?. ai ❑ ❑ ❑
# Does the Plan include a General Location (1JSGS) map? L ❑ ❑ ❑
# Does,the,Plan include a "Narrative Description of Practices"? ®❑ ❑ Cl
# Does the Plan include a detailed site map including outfall locations and drainage areas? a ❑ ❑
# Does the Plan include a list of significant spills occurring during the past 3 years? M ❑ ❑ ❑
# Has the facility evaluated feasible alternatives to current practices?
❑ ❑ ❑
# Does the facility provide all necessary secondary conlainment?
U ❑ ❑
# Does the Plan include a 13MP summary?
w ❑ ❑ ❑
Does the Plan include a Spill Prevention and Response Plan (SPRP)?
❑ ❑ ❑
# Does the Plan include a Prevehtative Maintenance and Good Housekeeping Plan?
®❑ ❑ C3.
# Does the facility provide and document Employee Training?
❑ ❑ ❑
# Does the Plan include a list of Responsible Party(s)?
❑ Cl ❑
# Is the Plan reviewed and updated annually?
M 0 ❑ ❑
# Does the Plaii include a Stormwater Facility Inspection Program?
®❑ ❑ 0
Has the Stormwater Pollution Prevention Plan been implemented?
®❑ ❑ ❑
Commient:
Qualitative Monitoring
Yes No NA NE
Has the facility conducted its Qualitative Monitoring semi-annually?
0 ❑ ❑ ❑
Comment:
Analytical Monitoring
Yes No NA NE
Has the facility conducted its Analytical monitoring?
A ❑ ❑ ❑
# Has the facility conducted its Analytical monitoring from Vehicle Maintenance areas?
❑ ❑ M ❑
Comment:
Permit and Outfalis
Yos No NA NE
# Is a copy of The Permit and the Certificate of Coverage available at the site?
■ ❑ ❑ ❑
# Were all oulfalls observed during the inspection?
■ ❑ 0-0
# If the facility has representative outfall status, is it properly documented by the Division?
❑ ❑ M ❑
# Has the facility evaluated all illicit (non stormwater) discharges?'
M 0 ❑ 0
Comment:
Page: 3

Michael F. Easley, Governor
William G. Rosa Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Ditetloi
Division of Water Quality
Asheville Reaional Office
SURFACE WATER PROTECTION
May 25, 2006
- -
Jeffrey S Ferguson, PE
Unimin Corporation
136 Crystal Dr
Spruce Pine, NC 28777
SUBJECT: May 22, 2006
Compliance Evaluation Inspection
Unimin Car oration
Unimin Carp -Green ountain Pla_ nt#'l
Permit No: NCG020032
Yancey ounty
Dear Mr. Ferguson:
Enclosed please find a copy of the Compliance Evaluation Inspection form from
the inspection conducted on May 22, 2006. Laurie Moorhead and I conducted the
inspection. The facility was found to be in Compliance with permit NCG020032.
Please refer to the enclosed inspection report for additional observations and
comments. If you or your staff have any questions, please call me at [phone] ext
4665.
Since�ply,
Starr Silvis
Environmental Engineer
Enclosure
cc- Mitch Snyderman — same address as above
Danny Smith — NPS-ACO
Central Files
Asheville Files
Npr hCarolina
. ,7�nlrrr�IlJ
2090 U.S. Highway 70, Swannanoa, NC 28778 Telephone: [phone] Fax: [phone] Customer Service 1 877 623-6748

Uniled Stales EnvirorlmeM21 Protection Agency
Form Approved.
EPA. Washington. D.G. 20460
OMB
No, 2040-0057
Water Compliance Inspection Report
Approval expires8.31.98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES r mofda Inspection Type
Inspector FacType
2 Icl 3 N00020032 11 12 06/05/22 17 "1 CI
1 �J L
J J
19 SI 201 ,
J
emar¢s
21
6
Inspection Work Days Fa Gli Self -Monitoring Evaluation Rating B1 QA •---�-------------Reservedly�----
67 69 I'll I 71 U 721 N[ 73 W 74
751 11 1 1• I Li 80
Section B: Facility Data
Name and Location of Facility In petted (For Ind uslriat Users discharging to POTW, also include
Entry Time/Date
Permit Effective Date
no,
POTW name and N D S Number)
unimin Mountain Plantll
09:00 AM 06/05/22
05/01/19
Exit Time/Date
Permit Expiration Date
Hwy 1 g7 N
Green Mountain NC 28740
10:00.Ats 06/05/22
09/12/31
Name(s) of Onsite Representative(s)Mtles(s)/Phone and Fax Number(s)
Other Facility Data
Name. Address of Responsible Official/Title/Phone and Fax Number
Jeffrey S Ferguson,136 Cryystal or Spruce Pine NC Contacted
28777//826-766-60a1/8287651114 No
Section C: Areas Evaluated Durin Inspection Check only those areas evaluated)
Permit Storm Water
Section D: Summary of Finding/Comments Attach additional sheets of narrative and checklists as necessa
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers
Date
}
f/f(i
5/as/o
Laurie L Moorhead S Q�I,r�C, ARO WQ//828-296-4500 Er.t.4664/
Starr Silvis !N { /' ARO Wo//828-296-4500/�L
/CA
Signature of Management Q A Reviewer Agency/OfficeiPhone and Fax Numbers
Date
Roger C'Edwards ARO wR//828-296-4500/
� .2 0 �J
EPA Form 3560.3 (Rev 9-94) Previous editions are obsolete.
Page # 1

yr/molday Inspection Type. { cons
11
Sec_ IUD: Summary of Finding/comments (Attach additional sheets of narrative and checklists as necessary)
The facility has been conducting qualitative and analytical sampling events as required by the permit. The
site map clearly shows the drainage areas for each outfall. The location of the outfall corresponding to the
drainage area should be marked on the map. During the inspection it was difficult for inspectors to
ascertain the outfall location for each drainage area due to abundance of pipes and culverts at Mine Fork
Creek near the entrance. One of the pipes was discharging cloudy water though it was not raining during
the inspection. The source of this discharge should be determined and documented and if possible treated
to reduce turbidity. Additionally, the runoff from the process building down the road to the southern entrance
did not appear to be captured by the map or the narrative description of the outfalls. All outfalls must be
monitored unless a respresentative status has been applied for and received.
Mr. Snyderman's assistance during the inspection was extremely helpful and appreciated. He indicated that
the facility has applied for representative outfall status over one year ago. We are following up with Raleigh
to determine the status of the application.
Inspectors noticed that there was extensive erosion on the road leading from the southern entrance to the
mine dewatering area. The erosion is currently directed into the creek. We suggest redirecting the flow into
the small sediment basin prior to discharge. Additionally, the sediment basin should be cleaned out.
Permit conditions require Best Management Practices (BMP) inspections to be conducted at least once
every seven calendar days and within 24 hours of any storm event that results in a discharge (NCG020000
Part III Section A.3).
Page # 2

Perml : NCG020032 Owner • Facility: Unimsn Corp -Green Mountain Plant#1
Inspection Dat 05122/2006 Inspection Type: Compliance Evaluation
Permit
Yes
No NA
NE
(If the present permit expires in 6 months or less). Has the permitlee submitted a new application?
0
❑ ■
❑
Is the facility as described in the permit?
■
❑ ❑
❑
# Are there any special conditions for the permit?
■
Is access to the plant site restricted to the general public?
■
0 Q
Is the inspector granted access to all areas for inspection?
■
Comment:
Page # 3

United States Environmental Protection Agency
Form Approved.
EPA Washinglon, D.G. 20460
OMB No. 2040.0057
Water Compliance Inspection Report
Approval expires B 31.98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPOES yr/mo/day Inspection Type Inspector FacType
1 I NI 2 f 5I 3 NCG020057 111 . 12I 06/05/22 117 1B� 19I S1 204
f t— {
Remarks
211 6
Inspection Work Days Facilit Self -Monitoring Evaluation Rating B1 OA
671 169 70 UI Ill II 72I N I 73 W 74 751 11 I I I I j 80
Section B: Facility Data
For Industrial Users discharging to POTW, also include
Name and Loc�NPDE�S_p'ermlt
Entry Time/Date
Permit Effective Dale
POTW name a�mb
10:15 AM 06/05/22
05/01/19
Corp -Green Mountain Plant 42
Exit Time/Date
Permit Expiration Date
:Unirain
197n
n Mountain NC 28740
10:45 AM 06/05/22
09/12/31
Name(s) of Onske RepresentaUve(s)/Titles(s)/Phone and Fax Number(s)
Other Facility Data
Name, Address of Responsible Official/Title/Phone and Fax Number
Contacted
Jeffrey S Ferqquson,PO Box 568 Spruce Pine NC
28777//828-766-6081/8287654755 No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Operations & Maintenance Facility Site Review e Storm Water
Section D: Summary of Finding/Comments Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers
Date
1
r" 1 t !!� AR0 WQ//828-296-4500 Ext. 4664/
Laurie L Moorhead LJ�
:�QA.i-�.�•Z �• 1 { �(-��
Starr Silvis -._ — ARO wQ//828-296-4500/
vA
FSignature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Dat
Zir QV
Roqer C Edwards ARO wQ/1828-296-4500/
EPA Form 3560-3 (Rev 9.94) Previous editions are obsolete.
Page # 1

NPDES yrimQlday Inspection Type (cont
3I.. NCG020057 111 _12 06/05/22__..._,_.L'_'_'8IcI ..._
Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary)
No mining occurs at this site. Olivine is transported to this site from Unimin's Green'Mountain Plant #1 in
Yancey County and is bagged and shipped from the Mitchell County site (Green Mountain Plant #2). No
crushing or wet processing occurs at this Mitchell County site. The only stormwater runoff leaving Green
Mountain Plant #2- is parking lot runoff.
Unimin should consider requesting :rescission of the NCG020057 permit for Green Mountain Plant #2,
assuming that the Standard Industrial Classification (SIC Code) for this particular site does not automatically
require stormwater permit coverage. Should the SIC Code automatically require a general stormwater
permit, the Green Mountain Plant #2 site does qualify for a no exposure exemption.
Page # 2

Permit: NCG020057 Owner - Facility: Unimin Corp -Green Mountain Plant #2
Inspection Date: 05/22/2006 Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA N>
Is the plant generally skean with acceptable housekeeping? ■ ❑ ❑ Cj
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO. Sludge 0 ❑
Judge, and other that are applicable?
Comment:
Page # 3

n
Crystal Plant
Tel: [phone]
Fax:
FAX
date
from
to;,r�- �K location
number of pages including cover sheet '3
nos
Gad y ao3z

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek. P.E. Director
Division of Water Quality
February 7, 2005
Greg Peterson
Unimin Corporation
PO Box 26
Marston, NC 28363
Subject: NPDES Stormwater Permit Coverage Renewal
Unimin Corp -Green Mountain Plant#1
COC Number NCG020032
Yancey County
Dear Permittee:
In response to your renewal application for continued coverage under general permit NCG020000 the Division of Water
Quality (DWQ) is forwarding herewith the reissued stormwater general permit. Please review the new permit to familiarize
yourself with the changes in the reissued permit. The general permit authorizes discharges of stormwater and some types of
wastewater. You must meet the provisions of the permit for the types of discharges present at your facility. This permit is
reissued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U.S. Environmental Protection Agency, dated December 6, 1983.
The following information is included with your permit package:
• A new Certificate of Coverage
• A copy of General Stormwater Permit NCG020000
• A copy of a Technical Bulletin for the general permit
• Five copies of Discharge Monitoring Report (DMR) Forms - wastewater and stormwater
• Five copies of Qualitative Monitoring Report Form
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require modification
or revocation and reissuance of the Certificate of Coverage' This permit does not affect the legal requirements to obtain other
permits which may be required by DENR or relieve the permittee from responsibility for compliance with any other applicable
federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
If you have any questions regarding this permit package please contact Aisha Lau of the Central Office Stormwater Permitting
Unit at [phone], ext.578.
Sincerely,
for Alan W. Klimek, P.E.
cc: Central Files
Stormwater & General Permits Unit Files
Asheville Regional Office
One
No hCarolina
�'Vatural
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.uslsulstormwater.html 512 N, Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer— 50% Recycled110% Post Consumer Paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG020000
CERTIFICATE OF COVERAGE No. NCG020032
STORMWATER AND PROCESS WASTEWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and
the Federal Water Pollution Control Act, as amended,
Unimin Corporation
is hereby authorized to discharge stormwater and to operate treatment systems and discharges associated
with mine dewatering wastewater and process wastewater from a facility located at
Unimin Corp -Green Mountain Plant#1
Hwy 197 N
Green Mountain
Yancey County
to receiving waters designated as Mine Fork, a class C stream in the French Broad River Basin in
accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, Il,
III, IV, V, and VI of General Permit No. NCG020000 as attached.
This certificate of coverage shall become effective February 7, 2005.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day February 7, 2005
for Alan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

,._ N
-Unimin
Unimin Corporation
136 Crystal Drive • Spruce Pine, NC 28777
(PHONL) 828/766-6481 •0-AX) 828/765.4755
co
(kt_d a f '
Z00
March 16, 2004
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Attn: Aisha Lau
Stormwater and General Permits Unit
Division of Water Quality _�OZ
1617 Mail Service Center
Raleigh, NC-27699-1617 t.
Subject: Request for Representative Qutfall Status
Unimin Corporation Green Mountain Plant No 1 Facility
Green Mountain, North Carolina, Yancey County
Dear Ms. Lau:
As per our telephone discussion today, please find enclosed copies of the original
request for representative outfall status for Unimin Corporation's Green Mountain Plant No.
1 facility submitted on December 13, 2002, including attached drawing depicting the
watersheds and a copy of the green card. If you have any questions regarding this matter or
require further information, please do not hesitate to Contact me at [phone] ext. 13.
Sincerely,
Jeffrey S. Ferguson, P. E.
Environmental Engineer
UNIMIN CORPORATION
c: FA Files

i r�7"i - MRa"isr,
af
Unimin Corporation
136 Crystal Drive • Spruce Pine, NC 28777
(PHONE) 828/766-6081 e (FAQ 828/765-4755
December 13, 2002
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Stormwater and General Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Request for Representative Out£all Status
Unimin Corporation -- Green Mountain Plant No. 1 Facility
Green Mountain, North Carolina, Yancey County
Dear Permits Unit:
Unimin Corpomtion would' like to request that you grant Representative OutfalI
Status as per .Condition' No. 6 of Monitoring & Records contained in the General
Stor mvater Permit. Attached please find a copy of a site drawing depicting eight individual
watersheds. 'Watersheds 1.& 7 drain internally. Watershed 4 drains into the mine-dewatering
pond that is analyzed quarterly. - Watersheds' 2 & 3 are very small in size and the majority of
stormwater shear planes into vegetation buffers. It is very bard to get a sample at these
locations. Watersheds 5, 6 and 8 are all similar in nature, all containing waste areas and all
discharge through either multiple rock check dams or sediment basins. Watersheds 5 and 6
pass through basins that discharge very seldom only in response to a very large storm event.
Please note that the outfalls are ,all similar watersheds with the same pollutants discharging
from waste areas. All mining areas are internally draining. Therefore in order to obtain
samples during a representative storm event, Unimin would like to request that storrnwater
samples taken at the outfall of Watershed 8 be representative of all other outfalls.
Unimin will continue to analyze samples obtained from the mine-dewatering outfall
quarterly to remain in compliance with the mine dewatering sample requirements. Please
respond to this request for representative outfall status. If you have any questions regarding
this .natter or require further information, please do not hesitate to contact me at (828) 766-
6081.
Sincerely,
Jeffrey S. Ferguson
Environmental Engineer
UNIMIN CORPOl;LATION
c: EA Piles; Robert McKenzie; Mitch SnydcRnan

1 ■ Co4r6te items 1, 2, and 3. Also complete
7A.SignatureM7'
yitem 4 if Restricted Delivery is desired.
❑ Agent
0 Print your name and address on the reverse
0 Addressee
so that we can return the card to you.
■ Attach this card to the back of the mailpiece,
B. Received by (Panted Name) C. Date of Delivery
= or on the front if space permits.
# 1. Article Addressed to:
D. is delivery address dliferent from Rem 17 ❑ yes
If YES, enter delivery address below: ❑ No
I
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3. FRealislearK
ertfid ❑ Enpress Ma ��
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❑ Insured Mail ��
4. Restricted Delivery? (1Jc ❑ yes
2. Art( (irar 7202 0862 0005 3670 2875
1 PS Form 3811, August 2001 Domestic Return Receipt 102595.02.1w.IW
,' . 1

Unimin Corporation
136 Cn-st1! Drire • Spruce Pvie, NC 28777
,,THONE1 8281766-6081 • (RAX. 828/765-4755
ER 71FIED MAIL
R-E-111JRN RECEIPT REQUESTED
Stormwater and General Permits Unit
Division of Water Quality.
1617 N--Wl'Service Center
Raleigh, NC 27699-1617
Subject
Dear Permits Unit:
December 13, 2002
Request for Rep resentati all
Unimin Corporation Green Mountain Plant No. 1 acility
Green Mountain, North
MY :
Unimin Corporation would like to request that you grant Representative Outfall
Status as per Condition No. 6 of Monitoring & Records contained in the General
Stormwater Permit. Attached please find a copy of a site draining depicting eight individual
watersheds. '% atersheds 1 & 7 drain internally. Watershed 4 drains into the mine-dewatering
pond that is analyzed quarterly.' Watersheds 2 & 3 are -very small in size and the majority of
stormwater shear planes into vegetation buffers. It is very hard to get a sample at these
locations. Watersheds 5, 6 and 8 are all similar in nature, all containing waste areas and all
discharge through 'either multiple rock check dams or sediment basins. Watersheds 5 and 6
pass through basins that discharge very seldom only in response to.a very large storm event.
Please note that the outfalls are all similar watersheds with the same pollutants discharging
from waste areas. All mining areas are internally, draining. Therefore in order to obtain
samples during a'representadve storm event, Unimin would like to request that stor'mwater
samples taken at the outfall of Watershed 8 be representative of all other outfalls.
Unimin will continue to analyze samples obtained from the mine-dewatering outfall
quarterly to remain'in compliance with the mine dewatering sample requirements. Please
respond to this request for representative outfall status. If you have any questions regarding
this matter or require further information, please do not hesitate to contact me at (828) 766-
6081.
Sincerely,
Jeffrey S. Ferguson
Environmental Engineer
UNI1\UN CORPORATION
c: EA i'=iles, Roben Mcfunzit, \Bich Snvdcnnan

uinimin
Unimin Corporation
136 CnIstai Drive• Spxuce Puce, NC 28777
(PHONE,) 828/766-6081 • (FAX) 828/765-4755
March 16, 2004
E TIFIED MAIL
TURN RE EI RE E TED
Attn: Aisha Lau ILA
Stormwater and General Permits Unit i1
Division of Water Quality C
1617 Mail Service Centex
Raleigh, NC 27699-1617
Subject: Request for Representative Outfall Status
Unimin Corporation — Green Mountain Plant No. 1 Facility
Green Mountain, North Carolina, Yancey County
Dear Ms, Lau:
As per our telephone discussion today, please find enclosed copies of the original
request for representative outfall status for Unimin Corporation's Green Mountain Plant No.
1 facility submitted on December 13, 2002, including attached drawing depicting the
watersheds and a copy of the green card. If you have any questions regarding this matter or
require further information, please do not hesitate to contact me at [phone] ext. 13.
Sincerely,
Jeffrey S. Ferguson, P. E.
Environmental Engineer
UNIMIN CORPORATION
c: EA Files

J

unimin
Unimin Corporation
13G Crystsd Drive + Spruce Pine, NC 28777
O)HONI?) 828/766-6081 • (FAX) 828/765-4755
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
1 L
DEC 2l Vec� ker 13, 2002
Stormwater and General hermits Unit lUD 3
Division of Waxer. Quality I�
1617 Mail Service Center
1Laleigh, NC 27699-1617
Subject- Request for Representative Outfall Status
Unimin Corporation — Green Mountain Plant No. 1 Facility
Green Mountain, North Carolina, Yancey County
Dear Permits Unit:
Unimin Corporation would like to request that you grant Representative Outfill
Straus as per Condition No. 6 of Monitoring & Records contained in the General
Stormwater Permit. Attached plescse find a copy of a site drawing depicting eight individual
watersheds. Watersheds 1 & 7 drain internally. Watershed 4 drains into the mint: -de -watering
pond that is analyzed quarterly. Watersheds 2 & 3 are very small in sue and the majority of
stormwater shear planes into vegetation buffers. It is very hard to get a sample at these
locations. Watersheds .5, 6 and 8 are all similar in nature, all containing waste areas and all
discharge through either multiple rock check dams or sediment basins. Watersheds 5 and 6
pass through basins that discharge very seldom only in response to a very large storm event-
1'leasc note that the outfalls are all similar watersheds with the same pollutants discharging
from waste areas. All mining areas are internally draining. Therefore in order to obtain
samples during a representative storm event, Unimin would like to request that stormwater
samples taken at the outfall of Watershed 8 be representative of all other outfalls.
Unimin will continue to analyze samples obtained from the mine-dewatering outfall
quarterly to remain in compliance with the mine dewatering sample requirements. Please
respond to this request for representative outfall status. If you have any questions regarding
this matter or require further information, please do not hesitate to contact me at (828) 766-
6081.
Sincerely,
Jeffrey S. Ferguson
Environmental Engineer
UNIMIN CORPORATION
rn Miler Robert McKenzie; Mitch Snydennan

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UNIMIN GREEN M❑UNTAIN PLANT
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V=200•FT I GMDB2•DWG

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman,'Secretary
Kerr T. Stevens, Director
July 10, 2000
Mr. Robert McKenzie
Unimin Corporation
Route 2 Box 992
Green Mountain, North Carolina 28740
M g 3 ±MW lk
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification - Name Change
Permit NCG020032
Unimin Corp. Green Mtn. Plant # l
(Formerly Unimin Corp — Burnsville)
Yancey County
Dear Mr. McKenzie:
In accordance with your request received June 23, 2000, the Division is forwarding the subject permit modification.
This modification documents the change in ownership at the subject facility. All other terms and conditions in the original
permit remain unchanged and in full effect. This permit modification is issued under the requirements of North Carolina
General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U. S. Environmental
Protection Agency dated December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit modification are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following
receipt of this letter. This request must be a written petition conforming to Chapter 150B of the North Carolina General
Statutes, filed with the Office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447.
Unless such demand is made, this decision shall be final and binding.
This permit does not affect the legal requirement to obtain other permits which may be required by the Division of
Water Quality, the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local government
permit that may be required. If you have any questions concerning this permit, please contact Valery Stephens at the
telephone number or address listed below.
Sincerely,
err T. Stevens
cc: Central Files
Asheville Regional Office, Water Quality Section
NPDES-Unit
Point Source Compliance Enforcement Unit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733.5083, extension 520 (lax) 919 733-0719
VISIT US ON THE INTERNr T @ http:lm2o.enr.state.ric.us/ Vale ry. Stephens 0 ncmai 1. net

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG020000
CERTIFICATE OF COVERAGE No. NCG020032
STORMWATER, MINE DEWATERING, AND/OR OVERFLOW FROM
PROCESS WATER RECYCLE SYSTEMS DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
UNIMIN CORPORATION
is hereby authorized to discharge mine dewatering and stormwater from a facility located at
Green Mountain Plant # 1
NC Highway 197
North of Burnsville
Yancey County
to receiving waters designated as Mine Fork Creek, class C waters, in the French Broad River Basin in accordance
with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, 11,111. IV, V, VI and
VII of General Permit No. NCG020000 as attached.
This certificate of coverage shall become effective July 17, 2000.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 17, 2000.
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

+' NPDES FACILITY AND PERMIT DATA 07/10/00 13:48:32
UPDATE OPTION TRXID 5NU KEY NCG020032
PERSONAL DATA FACILITY APPLYING FOR PERMIT REGION
FACILITY NAME> UNIMIN CORP-BURNSVILLE COUNTY> YANCEY 01
ADDRESS: MAILING (REQUIRED) LOCATION (REQUIRED)
STREET: 4000 BAKER ROAD STREET: HIGHWAY 197 NORTH
CITY: OTTAWA ST IL ZIP 61350 CITY: BURNSVILLE ST NC ZIP 28714
TELEPHONE [phone] DATE FEE PAID: 06/27/97 AMOUNT: 400.00
STATE CONTACT> MILLS PERSON IN CHARGE WILLIAM D. SHALTER
1=PROPOSED,2=EXIST,3=CLOSED 1 1=MAJOR,2-MINOR 2 1=MUN,2=NON-MUN 2
LAT: 3558030 LONG: 08217080 N=NEW,M=MODIFICATION,R=REISSUE> R
DATE APP RCVD 06/27/97 WASTELOAD REQS 11/03/92
DATE STAFF REP REQS 06/25/93 WASTELOAD RCVD 11/03/92
DATE STAFF REP RCVD 07/23/93 SCH TO ISSUE
DATE TO P NOTICE / / DATE DRAFT PREPARED 07/23/93
DATE OT AG COM REQS / / DATE DENIED
DATE OT AG COM RCVD / / DATE RETURNED
DATE TO EPA / / DATE ISSUED 12/17/99 ASSIGN/CHANGE PERMIT
DATE FROM EPA / / EXPIRATION DATE 11/30/04
FEE CODE ( 0 ) 1=(>10MGD),2=(>1MGD),3=(>O.1MGD),4=(<O.IMGD),5=SF,6=(GP25,64,79),
7=(GP49,73)8=(GP76)9=(GP13,34,30,52)0=(NOFEE) DIS/C 41 CONBILL ( )
COMMENTS: NAME CHANGE-7/5/94; ADDRESS CHANGE 2/20/95
MESSAGE: *** ENTER DATA FOR UPDATE ***

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
December 17, 1999
WILLIAM D. S1.IALTER
AIMCOR PLANT NUMBER 1
4000 BAKER ROAD
OTTAWA. IL 61350
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENv3RONMENT AND NATURAL RESOURCES
Subject: Reissue - NPDES Stormwater Permit
AIMCOR Plant Number I
COC Number NCGO20032
Yancey County
Dear Permittee:
In response to your renewal application for continued coverage under general permit NCG020000, the Division of
Water Quality (DWQ) is forwarding herewith the reissued stormwater general permit. This permit is reissued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement
between the state of North Carolina and the U-S. Environmental Protection Agency, dated December 6, 1983,
The following information is included with your permit package:
* A copy of general stormwater permit NCG020000
* Five copies of the Analytical Monitoring form and five copies of the Qualitative Monitoring form
* A copy of a Technical Bulletin on this permit which outlines permit components and
addresses frequently asked questions
* A Certificate of Coverage for your facility
* DWQ fee schedule
Your coverage under this general permit is not transferable except after notice to DWQ. The Division may require
modification or revocation and reissuance of the Certificate of Coverage. This permit does not affect the legal
requirements to obtain other permits which may be required by DENR or relieve the permittee from responsibility
for compliance with any other applicable federal, state, or local law rule, standard, ordinance, order, judgment, or
decree.
Please note that in 1999 Senate Bill 1366 established changes to the permit fee structure for DWQ permits effective
January 1, 1999. This change requires that you pay an annual fee to assure continued coverage under this permit.
You will be invoiced for this fee beginning next year. A copy of the current fee schedule is included with this letter.
If you have any questions regarding this permit package please contact Tony Evans of the Central Office Stormwater
and General Permits Unit at [phone], ext. 594
Sincerely,
for Kerr T. Stevens
Director, Division of Water Quality
cc: Central Files
Asheville Regional Office
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG020000
CERTIFICATE OF COVERAGE No. NCGO20032
STORMWATER AND PROCESS WASTEWATER DISCHARGES
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
AIMCOR
is hereby authorized to discharge stormwater and to operate or continue operation of treatment systems and
discharges associated with mine dewatering and process wastewater from a facility located at
AIMCOR PLANT NUMBER 1
HIGHWAY 197 NORTH
B URNS V ILLE
YANCEY COUNTY
to receiving waters designated as Mine Fork Creek in the French Broad River Basin in accordance with the effluent
limitations, monitoring requirements, and other conditions set forth in Parts I,1I. III, IV, V, and VI of General
Permit No. NCG020000 as attached.
This certificate of coverage shall become effective December 17, 1999,
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day December 17, 1999,
t5 ram'
for Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

GENERAL PERMITS
COPIES OF PERMITS ARE TO BE SENT
TO THE FOLLOWING:
SIGNED ORGINAL TO APPLICANT **
SIGNED COPY TO CENTRAL FILES
COPY TO REGIONAL OFFICE
COPY TO P&E FILE
COPY TO COMPLIANCE
COPY TO WAKE COUNTY
_
_COPY TO MECKLENBURG COUNTY
COPY TO TRAINING & CERT.**
**ATTACH COPY OF GENERAL PERMIT

State'of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 30, 1993
James B. Ehren
Route 2, Box 157C
Green Mountain, NC 28740
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[DEHNR
Subject: General Permit No. NCG020000
AIMCOR - Plant #1
COC NCG020032
Yancey County
Dear Mr. Ehren:
In accordance with your application for discharge permit received on September 30, 1992, we are
forwarding herewith the subject certificate of coverage to discharge under the subject state - NPDES general
permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215 .1 and the
Memorandum of Agreement between North Carolina and the US Environmental Protection agency dated
December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to request an individual permit by submitting an individual permit
application. Unless such demand is made, this certificate of coverage shall be final and binding.
Please take notice that this certificate of coverage is not transferable except after notice to the Division
of Environmental Management. The Divsion of Environmental Management may require modification or
revocation and reissuance of the certificate of coverage.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Ms. Susan Robson at telephone number
9191733-5083.
cc
Sincerely,
Original Signed By
Coleen H. Sullins
A. Preston Howard, Jr., P. E.
Asheville Regional Office
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
STORMWATER, MINE DEWATERING, AND/OR OVERFLOW FROM
PROCESS WATER RECYCLE SYSTEMS DISCHARGES
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
AIMCOR
is hereby authorized to construct and operate a mine dewatering and stormwater collection system and discharge
process water and stormwater from a facility located at
Plant Number 1
NC Highway 197
north of Burnsville
Yancey County
to receiving waters designated as the Mine Fork Creek in the French Broad River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III
and IV of General Permit No. NCG020000 as attached.
This certificate of coverage shall become effective July 30, 1993
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day July 30, 1993
Original Signet! By
Coleen H. Sullins
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

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