NCG020793_Complete File - Historical_20190430

SOUTHERN ENVIRONMENTAL LAW CENTER
Telephone [phone] PATTON AVENUE. SUITE 304 Facsimile 828-258-2024
ASHEVILLE, NC 28801-3321
April 25, 2019
Via Electronic Mail and U.S Certified Mail
David Hill
Environmental Specialist II
Water Quality Permitting Section
N.C. Department of Environmental Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
david.hill&ncdenr. you
RECEIVED
APR 30 2019
DENR-LAND QUALITY
STORMWATER PERMITTING
Landon Davidson
Environmental Regional Supervisor
Division of Water Resources- Water Quality Regional Operations
N.C. Department of Environmental Quality
2090 U.S. 70 Highway
Swannanoa, NC 28778
landon.davidsonna,ncdenr.eov
Annette Lucas, PE
Stormwater Program Supervisor
Energy, Mineral and Land Resources-Stormwater Program
N.C. Department of Environmental Quality
217 West Jones Street
Raleigh, NC 27603
annette.lucasna,ncdenr.gov
Re: Public Records Request (Sibelco NPDES Permits: NC0000175, NC0000361,
NCO084620 and NC0085839; Quartz Corps NPDES Permits: NC0000400,
NC0000353)
Dear Mr. Hill, Mr. Davidson and Ms. Lucas,
Pursuant to the North Carolina Public Records Law, N.C. Gen. Stat. § 132-1 et seq., the
Southern Environmental Law Center requests the right to inspect, examine, and copy the
following public records of the of the Division of Water Resources -Water Quality Section
("DWR"), and the Division of Energy, Mineral and Land Resources -Land Quality Section
("DEMLR") of the N.C. Department of Environmental Quality:
Charlottesville • Chapel Hill • Atlanta • Asheville • Birmingham • Charleston • Nashville • Richmond • Washington. DC
100% recycled paper

(1) DWR:
• All comments, including requests for public hearing, received on above -
pending NPDES permit renewals;
• All communications with federal and state agencies (including but not
limited to EPA, FWS, and WRC) regarding the above pending NPDES
permit renewals;
• All documents considered as part of the applications for the above permit
renewals (that are not available on laserfiche);
• All documents related to non-compliance, or possible non-compliance,
with NPDES industrial wastewater or stormwater permits for above
facilities since 2010, including notices of violation, penalty assessments,
and related correspondence;
• All effluent monitoring data that is summarized in table 1 and all instream
monitoring data that is summarized in table 2 of each fact sheet for the
above -referenced facilities.
(2) DEMLR stormwater:
• All current permits and certificates of coverage, and other documentation
related to coverage under general permits, for the above processing
facilities as well as "stormwater runoff from the mines ... permitted
through NC DEQ DEMLR under the stormwater general permit
NCG020000" referenced in the NPDES permit fact sheets (example
attached), including:
Schoolhouse NPDES Gen NCG020795
Sibelco NA NCG020793
Altapass NCG020818
Pine Mountain Mine NCG20274
• All documents related to the EPA investigation of stormwater from the
referenced mines, and visits to these mines, discussed in the NPDES
permit renewal fact sheets for the above facilities, from 2010 to present;
and
• All results of monitoring of stormwater from the mines by the mine
owners/operators, DEQ, or EPA, from 2010 to present.
(3) DEMLR / DWR / DWM:
• All documents concerning the placement of "[flesiduals from processing
and treatment" from the mining ore processing facilities "back into the
worked mines as part of the mine reclamation process," referenced in the
NPDES permit renewal fact sheets for the above facilities, from 2010 to
present (example attached).
This request specifically excludes documents currently available on the Department
of Environmental Quality's laserfiche website.
is

For the purposes of this request, the term "public records" shall have the meaning defined
in N.C. Gen. Stat. § 132-1 and shall include all such records in the possession, custody, or
control of DEQ as well as those prepared by, created by, or in the possession, custody, or control
of its agents, contractors, subcontractors, and attorneys. This request specifically includes all
emails, handwritten notes, letters, records of telephone conversations, other records of written
and/or oral communications, drafts, reports, and all other public records within the possession,
custody, or control of DEQ. Furthermore, we request access to each version of a record or
document, whether it is a draft, has been electronically deleted, has attachments, bears
annotations, etc.
If you take the position that any of the above -described public records are not open to
public inspection under the North Carolina Public Records Law, please explain the basis for your
position and identify any statute, rule of law, or other authority upon which you rely. Public
records must be provided to a requestor "as promptly as possible" upon payment of any fees,
which shall not exceed the actual cost of reproducing the public record. N.C. Gen .Stat. §§ 132-
1, 132-6. Please contact me prior to any copying if that actual cost is expected to exceed $300.
Thank you in advance for your cooperation. If you have any questions, or if we can
clarify the scope of our request, please do not hesitate to call me at 828-258-2023.
Sincerely,
CA-,
Amelia Burnette
cc: (via email)
Julie Grzyb — julie.g xybbna ncdenr.gov
Christy Simmons—christy.simmons(ancdenr.gov
Diane Rodman — [e-mail]

Fact Sheet
NPDES Permit No. NC0000353
Permit Writer/Email Contact David Hill, [e-mail]:
Date: September 19, 2018
Division/Branch: NC Division of Water Resources/NPDES Complex Permitting
Fact Sheet Template: Version 09Jan2017
Permitting Action:
® Renewal
❑ Renewal.with Expansion
❑ New Discharge
❑ Modification (Fact Sheet should be tailored to mod request)
Note: A complete application should include the following:
• For New Dischargers, EPA Form 2A or 2D requirements, Engineering Alternatives Analysis, Fee
• For Existing Dischargers (POTW), EPA Form 2A, 3 effluent pollutant scans, 4 2°d species WET
tests.
• For Existing Dischargers (Non-POTW), EPA Form 2C with correct analytical requirements based
on industry category.
Complete applicable sections below. If not applicable, enter NA.
1. Basic Facility Information
Facility Information
Applicant/Facility Name:
The Quartz Corp USA/The Feldspar Corporation
Applicant Address:
PO Box309, 797 Altapass Hwy, Spruce Pine, NC 27877
Facility. Address:
530 Altapass Road, Spruce Pine, NC 27877
Permitted Flow:
3.5 MGD
Facility Type/Waste:
Minor, 100% Industrial
Facility Class:
PC II
Treatment Units:
Three clarifiers, polymer feed system, pH adjustment feed system,
vacuum filters, Emico clarifier/thickener, emergency generator, flow
measurer and totalizing equipment, two recycle pumps
Pretreatment Program (Y/N)
No
County:
Mitchell
Region
Asheville
Briefly describe the proposed permitting action and facility background. The Quartz Corp USA
applied for NPDES permit renewal for their TFC facility, and submitted a renewal application
dated July 13, 2015. This facility processes local mineral ore for quartz, feldspar, and mica using
Page 1 of 9

acid extraction and froth flotation processes. Residuals from processing and treatment are placed
as `tailings' back into the worked mines as part of the mine reclamation process. There is concern
that stormwater runoff from the mines are contributing additional pollutants to the watershed.
Stormwater is currently permitted through NC DEQ DEMLR under the stormwater general
permit NCG02000 which expires September 30, 2020. EPA visited several of these sites in 2015 and
expressed concerns over potential pollutants in the stormwater. DEMLR has issued several of these
stormwater general permits with additional monitoring requirements and will reassess whether
these mines should continue receiving general permit coverage. If it is determined that the mines do
not qualify for general permit coverage, then those mines will be directed to apply for individual
NPDES wastewater coverage. If fluoride is detected in stormwater runoff, then that fluoride
loading will need to be accounted for in the fluoride WLA for the respective facilities.
Several mines (NC0000353, NC0000175, NC0000361, NC0000400, and NC0084620) share a
wasteload allocation (WLA) for fluoride to maintain the water quality standard of 1.8 mg/L. The
WLA is addressed in Appendix A. TSS limits were originally assigned using draft Effluent
Limitation Guidelines in EPA's 1975 Development Document for Interim Final Effluent Limitations
Guidelines and New Source Performance Standards for the CLAY, CERAMIC, REFRACTORYAND
MISCELLANEOUS MINERALS VOL. III MINERAL MINING AND PROCESSING IND USTR Y
Point Source Category. These draft guidelines, which set TSS limits at 0.6 lb/10001b of ore
processed, were never finalized. Subsequent expansions and new facilities redistributed or added
new TSS loading. Since the receiving stream is impaired for turbidity, TSS is frozen at current
loading.
2. Receiving Waterbody Information:
Receiving Waterbody Information
Outfalls/Receiving Stream(s):
Outfall 001- North Toe River
Stream Segment:
7-2-(27.7)
Stream Classification:
C; Trout
Drainage Area (mi2):
126
Summer 7Q 10 (cfs)
43
Winter 7Q10 (cfs):
55
30Q2 (cfs):
NA
Average Flow (cfs):
260
IWC (% effluent):
11
303(d) listed/parameter:
Yes- this segment is listed as impaired for turbidity on the
2016 303(d) list.
Subject to TMDL/parameter:
No
Subbasin/HUC:
040306/
USGS Topo Quad:
D10NE
Page 2 of 9

3 . Effluent Data Summary
Effluent data is summarized below for the period January 2015 - July 2018.
Table 1. Effluent Data Summary
Parameter
Units
Average
Max
Min
Permit
Limit
Flow
MGD
2.57
3.5
0.01
3.5 MA
TSS
lbs/day
800
1,771
2
1,568 MA
3,137 DM
Fluoride
Ibs/day
127.3
228
0
174 MA
348 DM
Chloride
mg/L
7.74
12
4.5
Settleable Solids
mL/L
0.1
0.1
0.1
pH
SU
6.9
7.8
6.5
6-10
Turbidity
ntu
17.4
38.6
4.61
MA -Monthly Average, WA -Weekly Average, DM -Daily Maximum
4. Instream Data Summary
Instream monitoring may be required in certain situations, for example: 1) to verify model predictions
when model results for instream DO are within 1 mg/l of instream standard at full permitted flow; 2) to
verify model predictions for outfall diffuser; 3) to provide data for future TMDL; 4) based on other
instream concerns. Instream monitoring may be conducted by the Permittee, and there are also
Monitoring Coalitions established in several basins that conduct instream sampling for the Permittee (in
which case instream monitoring is waived in the permit as long as coalition membership is maintained).
If applicable, summarize any instream data and what instream monitoring will be proposed for this
permit action: The current permit requires instream monitoring for fluoride, TSS, turbidity, and
pH. These parameters will be maintained in the permit. Mean averages are summarized below.
Table 2. Instream parameter means.
Parameter
Upstream Mean
Downstream Mean
Turbidity, NTU
16.7
11.6
H, Standard Units
6.8
6.8
TSS, m
12.3
12.9
Fluoride*, m
0.45
0.45
*all values reported below detection limits of 0.5 mg/L then 0.2 mg/L
Figure 1. Instream Turbidity with one outlier excluded.
Page 3 of 9

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5. Compliance Summary
Summarize the compliance record with permit effluent limits (past S years): The facility reported no
limit violations 2014-2018, however, DMR data for July 2018 has yet to be reported and the facility
suffered a HF bypass resulting in a fish kill in the receiving stream that same month.
Summarize the compliance record with aquatic toxicity test limits and any second species test results
(past S years): The facility passed 18 of 18 quarterly chronic toxicity tests January 2014 to present.
Summarize the results from the most recent compliance inspection: The last facility inspection
conducted in February 2018 indicated corrosion and solids build-up in clarifiers, weirs, and
discharge troughs. ARO is currently monitoring repairs and maintenance.
6. Water Quality -Based Effluent Limitations (WQBELs)
Dilution and MixingZones
ones
In accordance with 15A NCAC 2B.0206, the following streamflows are used for dilution considerations
for development of WQBELs: 1Q10 streamflow (acute Aquatic Life); 7Q10 streamflow (chronic Aquatic
Life; non -carcinogen HH); 30Q2 streamflow (aesthetics); annual average flow (carcinogen, HH).
If applicable, describe any other dilution factors considered (e.g., based on CORMIX model results): NA
If applicable, describe any mixing zones established in accordance with I5A NCAC 2B.0204(b): NA
Oxygen -Consuming Waste Limitations
Limitations for oxygen -consuming waste (e.g., BOD) are generally based on water quality modeling to
ensure protection of the instream dissolved oxygen (DO) water quality standard. Secondary TBEL limits
(e.g., BOD= 30 mg/1 for Municipals) may be appropriate if deemed more stringent based on dilution and
model results.
If permit limits are more stringent than TBELs, describe how limits were developed: The facility does not
discharge oxygen consuming waste.
Ammonia and Total Residual Chlorine Limitations
Limitations for ammonia are based on protection of aquatic life utilizing an ammonia chronic criterion of
1.0 mg/1(summer) and 1.8 mg/l (winter). Acute ammonia limits are derived from chronic criteria,
utilizing a multiplication factor of 3 for Municipals and a multiplication factor of 5 for Non -Municipals.
Limitations for Total Residual Chlorine (TRC) are based on the NC water quality standard for protection
of aquatic life (17 ug/1) and capped at 28 ug/1(acute impacts). Due to analytical issues, all TRC values
reported below 50 ug/1 are considered compliant with their permit limit.
Describe any proposed changes to ammonia and/or TRC limits for this permit renewal: The facility does
not discharge ammonia or TRC.
Reasonable Potential Analysis (RPA) for Toxicants
No RPA has been conducted because there are no effluent data for toxicants. The main pollutant of
concern, fluoride, has a shared wasteload allocation and will be addressed in Appendix A.
Page 5 of 9

Toxicity Testing Limitations
Permit limits and monitoring requirements for Whole Effluent Toxicity (WET) have been established in
accordance with Division guidance (per WET Memo, 8/2/1999). Per WET guidance, all NPDES permits
issued to Major facilities or any facility discharging "complex" wastewater (contains anything other than
domestic waste) will contain appropriate WET limits and monitoring requirements,, with several
exceptions. The State has received prior EPA approval to use an Alternative WET Test Procedure in
NPDES permits, using single concentration screening tests, with multiple dilution follow-up upon a test
failure.
Describe proposed toxicity test requirement: This is a Minor industrial mine, and a chronic WET
limit at 11% effluent will continue at a quarterly frequency.
Mercury Statewide TMDL Evaluation
There is a statewide TMDL for mercury approved by EPA in 2012. The TMDL target was to comply
with EPA's mercury fish tissue criteria (0.3 mg/kg) for human health protection. The TMDL established a
wasteload allocation for point sources of 37 kg/year (81 lb/year), and is applicable to municipals and
industrial facilities with known mercury discharges. Given the small contribution of mercury from point
sources (-2% of total load), the TMDL emphasizes mercury minimization plans (MMPs) for point source
control. Municipal facilities > 2 MGD and discharging quantifiable levels of mercury (>1 ng/1) will
receive an MMP requirement. Industrials are evaluated on a case -by -case basis, depending if mercury is a
pollutant of concern. Effluent limits may also be added if annual average effluent concentrations exceed
the WQBEL value (based on the NC WQS of 12 ng/1) and/or if any individual value exceeds a TBEL
value of 47 ng/l.
This facility is not known to discharge mercury.
Other TMDL/Nutrient Management Strategy Considerations
If applicable, describe any other TMDLs/Nutrient Management Strategies and their implementation
within this permit: NA.
Other WQBEL Considerations
If applicable, describe any other parameters of concern evaluated for WQBELs: NA
If applicable, describe any special actions (HQW or ORW) this receiving stream and classification shall
comply with in order to protect the designated waterbody: NA
If applicable, describe any compliance schedules proposed for this permit renewal in accordance with
15A NCAC 2H. 0107(c) (2) (B), 40CFR 122.47, and EPA May 2007 Memo: NA
If applicable, describe any water quality standards variances proposed in accordance with NCGS 143-
215.3(e) and 15A NCAC 2B.0226 for this permit renewal: NA
7. Technology -Based Effluent Limitations (TBELs)
This facility is not subject to any Effluent Limitation Guidelines
8. Antidegradation Review (New/Expanding Discharge):
The objective of an antidegradation review is to ensure that a new or increased pollutant loading will not
degrade water quality. Permitting actions for new or expanding discharges require an antidegradation
Page 6 of 9

review in accordance with 15A NCAC 2B.0201. Each applicant for a new/expanding NPDES permit
must document an effort to consider non -discharge alternatives per 15A NCAC 2H.0105(c)(2). In all
cases, existing instream water uses and the level of water quality necessary. to protect the existing use is
maintained and protected.
If applicable, describe the results of the antidegradation review, including the Engineering Alternatives
Analysis (EAA) and any water quality modeling results: NA
9. Antibacksliding Review:
Sections 402(o)(2) and 303(d)(4) of the CWA and federal regulations at 40 CFR 122.44(1) prohibit
backsliding of effluent limitations in NPDES permits. These provisions require effluent limitations in a
reissued permit to be as stringent as those in the previous permit, with some exceptions where limitations
may be relaxed (e.g., based on new information, increases in production may warrant less stringent TBEL
limits, or WQBELs may be less stringent based on updated RPA or dilution).
Are any effluent limitations less stringent than previous permit (YES/ND): NO
10. Monitoring Requirements
Monitoring frequencies for NPDES permitting are established in accordance with the following
regulations and guidance: 1) State Regulation for Surface Water Monitoring, 15A NCAC 2B.0500; 2)
NPDES Guidance, Monitoring Frequency for Toxic Substances (7/ 15/2010 Memo); 3) NPDES Guidance,
Reduced Monitoring Frequencies for Facilities with Superior Compliance (10/22/2012 Memo); 4) Best
Professional Judgement (BPJ). Per US EPA (Interim Guidance, 1996), monitoring requirements are not
considered effluent limitations under Section 402(o) of the Clean Water Act, and therefore anti -
backsliding prohibitions would not be triggered by reductions in monitoring frequencies.
For instream monitoring, refer to Section 4.
11. Electronic Reporting Requirements
The US EPA NPDES Electronic Reporting Rule was finalized on December 21, 2015. Effective
December 21, 2016, NPDES regulated facilities are required to submit Discharge Monitoring Reports
(DMRs) electronically. Effective December 21, 2020, NPDES regulated facilities will be required to
submit additional NPDES reports electronically. This permit contains the requirements for electronic
reporting, consistent with Federal requirements.
12.Summary of Proposed Permitting Actions:
Table 3. Current Permit Conditions and Proposed Changes
Parameter
Current Permit
Proposed.Change
Basis for Condition/Change
Flow
MA 3.5 MGD
No change
15A NCAC 2B .0505
TSS
1,568 lbs/day MA
No change
WBEL. State WQ standard, 15A
NCAC 2B.0200 and shared WLA.
3,1371bs/day DM
15A NCAC 02B .0508
Page 7 of 9

pH
6-9 su
No change
WQBEL. State WQ standard, 15A
NCAC 2B .0200. 15A NCAC 02B
.0508
Fluoride
174 lbs/day MA
No change
WQBEL. State WQ standard, 15A
348 lbs/day DM
NCAC 2B.0200 and shared WLA.
15A NCAC 02B .0508
Chloride
Monitor Only
No change
WQBEL. State WQ standard, 15A
NCAC 213.0200
Settleable Solids
Monitor Only
No change
15A NCAC 02B .0508
Turbidity
Monitor Only
Monitor only, added
WQBEL. 15A NCAC 2B.0200 and
additional condition
15A NCAC 213.0500. Stream is
for increased instream
303d listed as impaired for turbidity
monitoring if effluent
is above the WQS of
10 TU
Toxicity Test
Chronic limit, 45%
No change
WQBEL. No toxics in toxic
effluent
amounts. 15A NCAC 2B.0200 and
15A NCAC 213.0500
Total aluminum,
No monitoring/limits
Added quarterly
WBEL. State WQ standard, 15A
copper, lead,
monitoring based on
NCAC 2B.0200
nickel, zinc
EPA and stormwater
sampling results
Total Hardness
No monitoring
Added quarterly
WBEL. State WQ standard, 15A
effluent and upstream
NCAC 213.0200 to determine
monitoring to support
hardness -dependent metal standards
hardness -dependent
metal monitoring
MGD — Million gallons per day, MA - Monthly Average, WA — Weekly Average, DM — Daily Max
13. Public Notice Schedule:
Permit to Public Notice: September 19, 2018
Per 15A NCAC 2H .0109 & .0111, The Division will receive comments for a period of 30 days following
the publication date of the public notice. Any request for a public hearing shall be submitted to the
Director within the 30 days comment period indicating the interest of the party filing such request and the
reasons why a hearing is warranted.
14. Fact Sheet Addendum (if applicable):
Were there any changes made since the Draft Permit was public noticed (Yes/No): NO
If Yes, list changes and their basis below: NA
Page 8 of 9

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unimin
Corporate Environmental Affairs
Unimin Corporation
121 St. Andrews Ct.
Mankato, MN 56001
(Phone)507/386-2122
Stormwater Program
(Fax) 507/3 86-2110
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
Subject: Delegation of Signature Authority
Unimin Corporation — Schoolhouse Quartz Facility
Gen. NPDES Number NCG020795
To Whom It May Concern:
September 14, 2017
RECEIVED
SEP 9 201?
DENR-LAND QUALM STGRMWATER PERMIT;F,NG
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
40 CFR 122.22. /
Schoolhouse Quartz Plant Manager
Schoolhouse Quartz Plant Superintendent
Quartz Environmental Supervisor
Ouartz/Feldspar Environmental Affairs Supervisor
Regional General Manager
If YOU have any questions regarding this letter, please contact Jeff Ferguson at [phone] ext. 1602.
Respectfully,
Vpr. Environmental Affairs
c: EA Files, Angela Poston, Carl Horvat, James Byrd, Steve Wilson, Daniel Garland

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:
FOR AGENCY USE ONLY
Date Received
Year
I Month Da
0FA a%aS/i6
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 rill 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); �j 8 ' T'
• the principle executive officer or ranking elected official (for a municipality, state, f'�' al or of er public
agency);
• the general partner or proprietor (for a partnership or sole proprietorship); ;.,PJcFi t-h> 1'=` '' I
• 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 j C I S
2) Facility Information:
Facility name:
Company/Owner Organization:
Facility address:
(or) Certificate of Coverage
N I C I G 1 01 2 0 7 9 5
Unimin Corporation - Schoolhouse Quartz Operation
Unimin Corporation
107 Harris Mining Co. Rd. Hwy. 19E
Address
Spruce Pine NC 28777
City State Zip
To find the current legally responsible person associated with your permit, go to this website:
htti):Hi)ortal.ncdenr.org/web/ir/sw-permit-contacts and run the Permit Contact Summary Report.
3) OLD OWNER AFFILIATION that should be removed:
Previous legally responsible individual: Andrew G. Bradley
First 'NII Last
4) NEW OWNER AFFILIATION (legally responsible for the permit):
Person legally responsible for this permit:
Richard M. Solazzo
I irsi \ll Last
Paec I of 2
SW U-OW NERAFFIL-25July2014

NPDES Stormwater Permit OWNER AFFILATION DESIGNATION Form
(if no Facility Name/Ownership Change)
5) Reason for this change:
A result of:
If other please explain:
Sr. V.P./Environmental Affairs
Title
258 Elm Street
Mailing Address
New Canaan CT 06840
City State Zip
( 203 ) 966-8880 rsolazzo(&unimin.com
Telephone E-mail Address
( 203 ) 966-1977
Fax Number
® Employee or management change
❑ Inappropriate or incorrect designation before
❑ Other
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
Signatur Da
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:
http: //portal. ncdenr. orp/web/I r/storm water
Page 2 of 2
SWU-0W NERAFFIL-25Ju1y2014

North Carolina Department of Environmental Quality
Pat McCrory
Governor
Rick Solazzo
Senior V.P., Environmental Affairs
Unimin Corporation
258 Elm Street
New Canaan, CT 06840
Dear Mr. Solazzo:
Donald R. van der Vaart
Secretary
November 19, 2015
Subject: General Permit No. NCG020000
Unimin Corporation —
Schoolhouse Quartz
COC NCG020795
Avery County
In accordance with your request for renewal of a discharge permit received on May 30, 2014, 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 October 15, 2007 (or as subsequently amended).
Please take notice that this certificate of coverage is not transferable except after notice to the
Division of Energy, Mineral, and Land Resources. The Division may require modification or revocation and
reissuance of the certificate of coverage (COC).
Please be advised that EPA Region 4 staff who performed a Compliance Sampling Inspection (CSI) at
the end of March 2015 and follow-up sampling in June 2015 at other industrial mineral mines in North
Carolina raised concerns about metals levels in the discharges. The Stormwater Permitting Program
identified mines like this one that have similar activities. During the term of this General Permit, this site may
be evaluated further for an alternative permitting action, such as applying to the Division of Water Resources
(DWR) for an individual NPDES discharge permit (or modification of its existing wastewater individual permit)
prior to the expiration of this General Permit in 2020.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Energy, Mineral, and Land Resources, or permits required by the Division of Water Resources
(DWR), Coastal Area Management Act, or any other federal or local governmental permit that may be
required. If the conditions as stipulated in the COC are unacceptable to you, you may apply sooner for an
individual NPDES discharge permit.
Division of Energy, Mineral, and Land Resources
Energy Section - Geological Survey Section - Land Quality Section
512 North Salisbury Street, Raleigh, North Carolina 27604 - Internet: http://Dortal.ncdenr.org/web/Ir/
Mailing Address: 1612 Mail Service Center, Raleigh, North Carolina 27699-1612.919-707-9200 / FAX: [phone]
An Equal Opportunity 1 Affirmative Action Employer — 50% Recycled 110% Post Consumer Paper

NCG020795 Renewal COC
November 19, 2015
Page 2
If you have any questions concerning this permit, please contact Bradley Bennett at telephone number
[phone], or Bethany Georgoulias at telephone number [phone].
Sincerely,
for Tracy E. Davis, P.E., CPM
cc: Toby Vinson, DEMLR Land Quality Section
Tom Belnick, DWR Water Quality Permitting Section
Stan Aiken, DEMLR Asheville Regional Office RE
Linda Wiggs, DWR Asheville Regional Office
Kip Tyler, EPA Region IV NPDES Permitting and Enforcement Branch
Stormwater Permitting Program Files
DWR Central Files

Certificate of Coverage
Page 1 of 1
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF ENERGY, MINERAL AND LAND RESOURCES
GENERAL PERMIT NO. NCG020000
CERTIFICATE OF COVERAGE No. NCG020795
STORMWATER AND 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/or wastewater, as provided in the original Certificate of
Coverage (COC), or subsequent COC modification, from a facility located at:
Unimin Corporation Schoolhouse Quartz
107 Harris Mining Co Rd Hwy 19e
Spruce Pine
Avery County
to receiving waters designated as North Toe River, class C;Tr water(s) in the French Broad River Basin
(s) in accordance with the stormwater pollution management requirements, monitoring and reporting
requirements, and other conditions set forth in Parts I, II, III, IV, V, and VI of General Permit No.
NCG020000 as attached.
This Certificate of Coverage shall become effective October 1, 2015.
This Certificate of Coverage shall remain effective for the duration of the General Permit.
Signed this day October 1, 2015.
for Tracy E. Davis, P.E., CPM
Director, Division of Energy, Mineral and Land Resources
By the Authority of the Environmental Management Commission
http://portal.ncdenr.org/web/Ir/2015-erenewal 11 / 19/2015

North Carolina Department of Environmental Quality
KIT Technical Bulletin for N.C. General NPDES Permit NCG020000 (Mining
Environmental Activities) Division of Energy, Mineral, and Land Resources
Quality
Technical Bulletin for NCG0200M (Mining) Last Revised 10/82015
What activities are covered by this general permit?
NCG020000 coverage authorizes:
• Stormwater discharges associated with mining and quarrying of non-metallic minerals (except fuels),
mine excavation, processing, and vehicle maintenance activities (VMA) at mine sites.
• Wastewater discharges (dewatering, process wastewater, wastewater recycle system overflows).
• Operation of wastewater treatment systems (Authorization to Construct no longer required).
NCG020000 coverage is NOT APPLICABLE to:
• Borrow Pits covered by the NC DOT statewide stormwater permit.
• Peat mining, coal mining, metal mining, or oil 8, gas extraction operations.
• Wastewater not specifically identified by the general permit.
What are key stormwater requirements?
NCG020000 requires periodic discharge monitoring and a Stormwater Pollution Prevention Plan (SPPP):
• Develop and implement an SPPP, and update it at least annually.
• Inspect Stormwater Best Management Practices (BMPs) once every seven (7) calendar days.
• Semi-annual analytical monitoring and qualitative (visual) monitoring.
• Report stormwater monitoring data once a year by March 1 st to DEQ Central Office.
• Report benchmark exceedances or Tier 2 monitoring to the DEMUR Regional Office within 30 days.
• Respond to benchmark exceedances according to Tier response requirements.
What are key wastewater requirements?
NCG020000 stipulates wastewater treatment facility operational requirements and periodic discharge
monitoring:
• Notify DEQ if facility fails to perform satisfactorily or creates nuisance conditions.
• Only DEQ-evaluated flocculants may be used, if administered according to maximum application doses.
• Quarterly analytical monitoring for first year, or until four consecutive samples comply with all limits (then
semi-annual monitoring allowed). Quarterly monitoring schedule resumes upon any limit violation.
• Settleable solids (SS) monitoring applies to discharges to HQW, ORW, SA, SB, PNA, or Tr designated waters.
• Total Suspended Solids (TSS) limits specific to industrial sand mines, and to any mine discharging to HQW.
• Report wastewater effluent monitoring data once a year (by March 1st) to DEQ Central Office.
• Report effluent limitation violations to the DEMUR Regional Office within 30 days.
• Effluent turbidity levels above the water quality standard prompt upstream and downstream monitoring.
What has changed from the previous permit?
Some changes specific to stormwater:
• Reduced BMP inspections (weekly) for active
mines; additional allowances for inactive mines
that qualify for "dormant status."
• Changes to SPPP Annual Update.
• "Measureable storm event' (any size that results in
a discharge) replaces "Representative" event.
• New benchmarks and Tiers specific to turbidity.
• Total Flow and event duration no longer required.
• pH removed from VMA monitoring.
Some changes specific to Wastewater:
• May drop to semi-annual WW monitoring after four
quarterly samples that comply with all limitations.
• Turbidity instream monitoring is required if effluent
levels above the water quality standard.
• SS monitoring for sensitive waters only (HQW, etc.)
• TSS limits apply to industrial sand mines and HQWs.
Changes from the last permit are detailed In the
"Response to Comments and Summary of Changes"
Document for the 2015 NCG02 GP on our website.

PAGE 2 TECHNICAL BULLETIN FOR N.C. GENERAL NPOES PERMIT NCGO20000 (MINING ACTIVITIES) LAST REV. 100IS
Frequently Asked Questions
What if my mine is inactive?
The permit makes allowances for
Inactive mines that have sus-
pended all industrial activities
and that certify to DEMUR that
the site has been stabilized. If
approved for "dormant status,"
these operations qualify for re-
duced BMP inspections and may
be exempted from outfall moni-
toring by the Regional Engineer.
Do I have to monitor all
outfalls?
Yes. However, you may request
Representative Outfoll Status
(ROS). If approved, ROS allows
monitoring at fewer outfalls. To
request ROS, submit an ROS Re-
quest Form to the DEMUR Region-
al Office. The form is available
on our website (below).
Also, the Regional Office may
exempt mines with "dormant sta-
tus" from analytical and/or quali-
tative monitoring.
What if 1 sell my business, or
the name changes?
You are required to notify DEMLR
of those changes in writing, and
continuation of permit coverage
is subject to the Director's ap
proval. Please submit the Name/
Ownership Change form located
on our Program website.
What do I do when my permit
expires?
Permitees are not required to sub-
mit an application for renewal un-
less directed by the Division. The
permiteee should continue to
abide by this general permit if it
expires and renewed coverage
has not yet been issued.
What is wastewater, and what
is stormwater at a mine site?
Any water contacting an actively
mined area, water used to pro-
cess mined materials, and mine
dewatering water are all consid-
ered "wastewater." For some
mines, "mine dewatering" also
means wet pit overflows, and not
just pumped -out water. Any
stormwater that commingles with
these waters is "wastewater."
"Stormwoter" includes runoff from
areas related to mining, pro-
cessing, or raw material storage
areas, such as haul roads or pro-
cessing plant areas at the mine.
Sometimes the answer is not clear
because of how broad the defini-
tions are. For example, N.C. con-
siders runoff from areas that con-
tain overburden only (no mined
or processed material), and that
does not commingle with
wastewater (including runoff from
the mine), to be stormwater. If
you are unsure about discharges,
please contact the DEMUR Re-
gional Office for assistance.
Does a certified lab need to
analyze my samples?
Monitoring under NPDES permits
must be conducted in accord-
ance with test procedures ap-
proved in federal regulations in 40
CFR § 136. All labs certified by
North Carolina perform analysis in
accordance with those proce-
dures. While N.C. certification re-
quirements do not apply to testing
stormwater-only discharges, data
gathered under an NPDES permit
_must OR conform to federal re-
quirements. Using a North Caroli-
na certified lab is one way to en-
sure compliance. A list of certified
labs is available from: http://
portal.ncdenr.org/web/wq/lab/
cert/
What if I pull samples for my
analytical monitoring, and I'm
unable to get a sample or valid
results for a parameter?
If this happens, please sample for
the missing parameter during the
next measureable storm event or
wastewater discharge.
If I sample my discharge, do 1
have to do visual monitoring at
the same time?
You may, but it is not necessary
under NCG02. Some other gen-
eral permits require it, however.
What if there is no flow for a
period between two samples
that exceed a benchmark? Are
those consecutive exceedances?
Yes. This scenario still puts you in
Tier 2. The new permit is more
clear about how the Tier 2 trigger
omits periods of no discharge.
Who can help me with questions?
Your questions about stormwater permit requirements
can be addressed to the DEMLR Offices:
Asheville Office ........... [phone] Washington Office.......
[phone]
Fayetteville Office....... [phone] Wilmington Office........
[phone]
Mooresville Office....... (7041 663-1699 Winston-Salem Office...
[phone]
Raleigh Office ............ [phone] Central Office .............
[phone]
Helpful Link:
DEMLR Stormwater Permitting Program:
http://PortaLncdenr.org/web/ir/Stormwater

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — STORMWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG020000
Calendar Year
*Report ALL STORMWATER monitoring data on this form (include "No flow"f No Discharge" and Benchmark
Exceedances) from the previous calendar year to the DEQ by MARCH 1 of each year.
Certificate of Coverage No. NCG02
Facility Name:
County:
Phone Number:
Certified Laboratory Lab #
Lab #
Total no. of SDOs monitored
Stormwater Discharge Outfall (SDO) No. VMA Outfall?
Yes ❑ No ❑
Is this outfall currently in Tier 2 for any parameter?
Yes ❑ No ❑
Was this outfall ever in Tier 2 during the past year?
Yes ❑ No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency
❑
Yes, received approval from DEMLR to reduce monitoring frequency
❑
No, turbidity benchmark exceedances did not require monthly monitoring
❑
Other
❑
Outfall No.
Total
Rainfall,
inches
TSS,
mg/1
SS,
ml/1
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Non -polar
O&G, mg/I
(VMA)
New
Motor Oil
Usage
al/mo.
Stormwater
Benchmarks
Intlicate NO
FLO1YO
a Ikable
Glre1e
Benchmark
100/50
0.1
Circle
Benchmark
50/25/10
N/A
Water Quality
Standard applies
N/A
Water Quality
Standard applies
15
>55gagmo.
average requires
TSS and Nonyolar
O&G monllorin
Date Sample
Collected,
mo/dd/ r
Permit Date 10/112015 — 9/3012020
Last Revised 10-2-2015

Certificate of Coverage No. N0002 ❑❑❑❑
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. VMA Outfall? Yes ❑ No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ❑ No ❑
Was this outfall ever in Tier 2 during the past year? Yes ❑ No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency
❑
Yes, received approval from DEMLR to reduce monitoring frequency
❑
No, turbidity benchmark exceedances did not require monthly monitoring
❑
Other
❑
Outfall No.
Total
Rainfall,
inches
TSS,
mg/I
SS,
ml/I
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Non -polar
O&G, mg/I
(VMA)
New
Motor Oil
Usage
9
al/mo.
Stormwater
Benchmarks
Indicate NO
a` oW ff
circle
Benchmark
100/50
0.1
Circle
Benchmad,
50/25/10
N/A
BWater bndard applies
N/A
Standard applies
15
>55gall o.
average requlres
T55 and Nonpolar
O&G monitodn
Date Sample
t
. we"Collected, rt
"'
Y
�;t
J .,.
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG02 ❑❑❑❑
Additional Outfall Attachment (make copies as needed for additional outfalls)
Stormwater Discharge Outfall (SDO) No. VMA Outfall? Yes ❑ No ❑
Is this outfall currently in Tier 2 for any parameter? Yes ❑ No ❑
Was this outfall ever in Tier 2 during the past year? Yes ❑ No ❑
If this outfall was in Tier 2 last year, was monthly monitoring discontinued?
Yes, enough consecutive samples below benchmarks to decrease frequency ❑
Yes, received approval from DEMLR to reduce monitoring frequency ❑
No, turbidity benchmark exceedances did not require monthly monitoring ❑
Other ❑
Outfall No.
Total
Rainfall,
inches
TSS,
mg/I
SS,
mill
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
D) Turbidity,
NTU
Non -polar
O&G, mg/I
(VMA)
New
Motor Oil
Usage
al/mo.
Stormwater
Benchmarks
Intllcafe No
aFLOWN
liable
Benchmark
100/50
0.1
Benchmaek
50/25/10
N/A
Slan4snl plplies
N/A
WaterQuallty
Standard applies
15
erage r >55 qui
average onQ ola
TSS and nitodn ar
O&G monitoeln
Date Sample
Collected,
mo/dd/ r
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG02 ❑❑❑❑
CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
[Required by 40 CFR §122.22]
Signature
Date
Mail Annual Summary Stormwater DMR to the NCDEQ Central Office:
Note the address is correct — Central Files is housed in DWR (not DEMLR)
N.C. Department of Environmental Quality (DEQ)
Division of Water Resources
Attn: DWR Central Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files Telephone [phone]
Questions? Contact DEMLR Stormwater Permitting Staff in the Central Office at:
[phone]
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

ANNUAL SUMMARY DISCHARGE MONITORING
REPORT (DMR) — WASTEWATER
SUBMIT TO CENTRAL OFFICE*
General Permit No. NCG020000
Calendar Year
'Report ALL WASTEWATER monitoring data on this form (include "No Flow"/"No Discharge" and Limit Violations) from
the previous calendar year to the DEQ by MARCH 1 of each vear.
Certificate of Coverage No. NCG02 UUUU
Facility Name:
County:
Phone Number: ( ) Total no. of outfalls monitored
Certified Laboratory Lab #
Lab #
Wastewater (WW) Discharge Outfall No.
Is this an industrial sand mine (See 40 CFR §436 Subpart D)?
Yes ❑
No ❑
Does this outfall discharge WW to SA waters?
Yes ❑
No ❑
Does this outfall discharge WW to SB or PNA waters?
Yes ❑
No ❑
Does this outfall discharge WW to HQW or ORW waters?
Yes ❑
No ❑
If so, what is the 7Q10 flow rate? or Tidally influenced waters,
7Q10 not available ❑
Does this outfall discharge WW to Trout (Tr) designated waters?
Yes ❑
No ❑
Were there any limit violations in the calendar year?
Yes ❑
No ❑
Outfall No.
Daily Flow
Rate, cfs
pH,
SU
TSS,
mg/I
SS,
mi/I
!/applicable
Discharge
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Fecal
Coliform,
col/100 ml
SA
Effluent
Limitations
Mo. Ave/Daily Max.
HOWor ORW
50%of
7Q10
Mdhe to NO FLOW
Ifamikab/e
freshwater
6.0-9.0
salte"to`
Industrial Sand
25/45
HOWorORW
20/30
Ar!S!Tr or RNA
10/15
HOW,ORW,
SA, SB,PNA,
or any Trout
0.1/0.2
No Limit
circle Water
atpl
50/25/10
NIA
WaterOuality
Standard applies
N/A
WaterOuallty
Standard applies
N/A°11apgartl
Date Sample
Collected,,
mo/dd/yr
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG02 ❑❑❑❑
Additional Outfall Attachment (make copies as needed for additional outfalls)
Wastewater (WW) Discharge Outfall No.
Is this an industrial sand mine (See 40 CFR §436 Subpart D)?
Yes ❑
No ❑
Does this outfall discharge WW to SA waters?
Yes ❑
No ❑
Does this outfall discharge WW to SB or PNA waters?
Yes ❑
No ❑
Does this outfall discharge WW to HQW or ORW waters?
Yes ❑
No ❑
If so, what is the 7010 flow rate? or Tidally influenced waters,
7Q10 not available ❑
Does this outfall discharge WW to Trout (Tr) designated waters?
Yes ❑
No ❑
Were there any limit violations in the calendar year reported?
Yes ❑
No ❑
Outfall No.
Daily Flow
Rate, cfs
pH,
SU
TSS,
mg/I
SS,
dml/Iba
Discharge
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Fecal
Coliform,
col/100 ml
SA
Effluent
Limitations
Mo. Ave I Daily Mae.
HOWor ORW
50%of
7010
Indicate NOFLOW
ItaPplicdble
hesh.ter
6.0-9.0
saltmater
Industrial Sand
25/45
HOWorORW
20/30
HOWorORW
ppp Tr or PNA
10/15
HOW,ORW,
SA. S.,PNA,
or any Trout
0.1/D.2Quality
No Limit
CircleWater
oars
Mat applies:
5U/25/10
N/A
QualityStandardWater
Standard
N/A
N/A6.8-$•5
Date Sample
Collected,
mo/dd/yr
_
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG02 ❑❑❑❑
Additional Outfall Attachment (make copies as needed for additional outfalls)
Wastewater (WW) Discharge Outfall No.
Is this an industrial sand mine (See 40 CFR §436 Subpart D)?
Yes ❑
No ❑
Does this outfall discharge WW to SA waters?
Yes ❑
No ❑
Does this outfall discharge WW to SB or PNA waters?
Yes ❑
No ❑
Does this outfall discharge WW to HQW or ORW waters?
Yes ❑
No ❑
If so, what is the 7Q10 flow rate? or Tidally influenced waters,
7Q10 not available ❑
Does this outfall discharge WW to Trout (Tr) designated waters?
Yes ❑
No ❑
Were there any limit violations in the calendar year reported?
Yes ❑
No ❑
Outfall No.
Daily Flow
Rate, cfs
pH,
SU
TSS,
mg/I
SS,
mill
°applicable
Discharge
Turbidity,
NTU
Upstream
(U) Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Fecal
Coliform,
col/100 ml
SA
Effluent
Limitations
Mo. Ave I Daily Max.
HOWor ORW
50% of
7010
Indicate NO FLOW
Happllcable
hesbvrater
6.0-9.0
ealtaeter
6.8-8.5
Industrial sand
25/45
HOWorORW
20/30
HOWorORW
nazi Tr or PNA
10115
HOW,ORW,
SA Ss, PNA,
or any Trout
0.1/0.2
No Limit
Circle Water
'enaataswt11mare
50/25/10
N/A
Water Quality
standard apples
N/A
Water Quality
Standard applies
N/A
Date Sampleif
Collected,
mo/dd/yr
.. `
- •��.t'
y
ter,
•..
s U
s
Permit Date 10/1/2015 — 9130/2020
Last Revised 10-2-2015

Certificate of Coverage No. NCG02 ❑[-]Fl❑
CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or
those persons directly responsible for gathering the information, the information submitted is, to the best of my
knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
[Required by 40 CFR §122.24
Signature
Date
Mail Annual Summary Wastewater DMR to the NCDEQ Central Office:
Note the address is correct — Central Files is housed in DWR (not DEMLR)
N.C. Department of Environmental Quality (DEQ)
Division of Water Resources
Attn: DWR Central* Files
1617 Mail Service Center
Raleigh, NC 27699-1617
Central Files Telephone [phone]
Questions? Contact DEMLR Stormwater Permitting Staff in the Central Office at:
[phone]
Permit Date 10/1/2015 — 9/30/2020
Last Revised 10-2-2015

BENCHMARK EXCEEDANCE or TIER 2 DISCHARGE MONITORING REPORT (DMR) - STORMWATER
SUBMIT TO REGIONAL OFFICE*
General Permit No. NCG020000
*Use this form if any stonnwater samples have EXCEEDED A BENCHMARK or if the facility is in TIER 2 MONITORING for any parameter
(including TIER 2 for Turbidity). Send sample results to the DEMLR Regional Office within 30 days of receipt from the laboratory.
Certificate of Coverage No. N0002
Facility Name:
County:
Phone Number:
Certified Laboratory:
Lab #
Lab #
Sample Collection Period:
Person Collecting Samples:
Period 1 ❑ Period 2 ❑
For Monthly Monitoring:
Calendar Year
Month
Has this facility had 4 or more benchmark exceedances for any single parameter, at any one SW discharge outfall (SDO)1 Yes ❑ No ❑
Have you contacted the Regional Office? Yes ❑ No ❑
Whom at the Region did you speak with?
Part A: Stormwater Monitorinq Requirements (no VMA, see next vane for outfalls with VMA)
Outfall
No.
Date Sample
Collected
Total
Rainfall
Is this SDO
in Tier 2?
Total
Suspended
Solids (TSS),
mg/I
Settleable
Solids,
ml/I
Turbidity, NTU
Upstream (U)
Turbidity,
NTU
Downstream (D)
Turbidity,
NTU
mo/dd/yr
or "NO FLOW"
inches
YIN
100
SO (ORW, HOW, Tr, PNA)
0.1
50
25 (takes,reservoirs, salt waters)
10 (freshwater Tr designated
streema, lakes, and reservolre
N/A
Water Ouallty
Standard applies
N/A
Water Quality
Standard applies
Permit Date 10/1/2015 — 9/30/2020 Last Revised 10-2-2015
Page 1 of 3

Certificate of Coverage No. NCGU ❑❑❑❑
Part A- Stormwater Monitorina Requirements (no VMA). Cont.
Outfall
No.
Date Sample
Collected
Total
Rainfall
Is this SDO
in Tier 27
Total
Suspended
Solids (TSS),
mg/I
Settleable
Solids,
mill
Turbidity, NTU
Upstream (U)
Turbidity,
NTU
Downstream (D)
Turbidity,
NTU
mo/dd/yr
or "NO FLOW"
inches
Y/N
100
50 ORIN, NOW, Tr, PNA)
(
0.1
50
25(lakes,reserrolre,sell mtera)
10 (freshwater Tr dealgnated
streams, lakes, and reservoirs)
N/A
Waterd applivalltyes
Standard appllea
N/A
Water Opagry
Standard applies
Part B: Stormwater Monitoring Requirements for SDOs with Vehicle Maintenance Activities (VMA) where facilities use > 55 gallons of new
motor oil a month if averaged over the calendar vear. NOTE. Other parameters only for outfalls that include both mining activities and VMA.
Outfall
No.
Date Sample
Collected
Total
Rainfall
VMA
TSS,
mg/I
VMA only
Non -polar
O&G, mg/I
VMA only
New Motor
Oil Use
(gal/mo.)
If applicable
SSA
mi/1
If applicable
Turbidity,
NTU
If applicable
Upstream (U)
Turbidity,
NTU
If applicable
Downstream (D)
Turbidity,
NTU
mo/dd/yr
or "NOFLOW"
inches
100/50
15
55
0.1
60/25/10
N/A
N/A
Permit Date 10/1/2015 — 9/30/2020 Last Revised 10-2-2015
Page 2 of 3

Certificate of Coverage No. NCG02 ❑❑❑❑
CERTIFICATION
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations." [Required by40 CFR §122.22]
Signature
Date
Mail Benchmark Exceedance/Tier 2 DMR to Your DEMLR Regional Office Land Quality Section:
ASHEVILLE REGIONAL OFFICE
2090 US Highway 70
Swannanoa, NC 28778
[phone]
IGH REGIONAL OFFICE
3800 Barrett Drive
Raleigh, NC 27609
[phone]
WINSTON-SALEM REGIONAL
OFFICE
450 Hanes Mill Road, Suite 300
Winston-Salem, NC 27103
[phone]
Permit Date 10/1/2015 — 9/30/2020
FAYETTEVILLE REGIONAL OFFICI
225 Green Street
Systel Building Suite 714
Fayetteville, NC 28301-5043
[phone]
WASHINGTON REGIONAL OFFICE
943 Washington Square Mall
Washington, NC 27889
[phone]
CENTRAL OFFICE
Questions for The Central Office
Stormwater Permitting Program?
[phone]
dOORESVILLE REGIONAL OFFICE
610 East Center Avenue/Suite 301
Mooresville, NC 28115
[phone]
WILMINUI UIN HLUMNAL Vrr IUL
127 Cardinal Drive Extension
Wilmington, NC 28405-2845
[phone]
Last Revised 10-2-2015
Page 3 of 3

LIMIT VIOLATION DISCHARGE MONITORING REPORT (DMR) — WASTEWATER
SUBMIT TO REGIONAL OFFICE*
General Permit No. NCG020000
"Use this form if any wastewater samples have EXCEEDED A WASTEWATER LIMIT for any parameter.
Send sample results to the DEMLR Regional Office within 30 days of receipt from the laboratory.
Certificate of Coverage No. NCG02
Facility Name:
County:
Phone Number:
Certified Laboratory: Lab #
Lab #
Sample Collection Period: Qtr 1 ❑ Qtr 2 ❑ Qtr 3 ❑ Qtr 4 ❑ Calendar Year
If Monthly Monitoring: Month
Person Collecting Samples:
Is this an industrial sand mine?
Yes ❑
No ❑
Discharge to HQW or ORW waters? Yes ❑
No ❑
Discharge to SA waters?
Yes ❑
No ❑
Discharge to Tr (Trout) waters? Yes ❑
No ❑
Discharge to SIB or PNA waters?
Yes ❑
No ❑
If HQW, what is the 7Q10 flow rate?
or Tidal, 7010 not available ❑
Wastewater Monitorina Reauirements
Outfall
No.
Date Sample
Collected
Daily Flow
Rate, cfs
pH,
SU
Total
Suspended
Solids (TSS),
mg/I
Settleable
Solids,
ml/I
Nappncable
Discharge
Turbidity, NTU
Upstream (U)
Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Fecal
Coliform,
col/100 ml
SA
mo/dd/yr
or "NO FLOW"
HQW or ORW
50% of
7Q10
Indicate NOFLOWN
ticabla
hesh"ter
6.0-9.0
"" "'
6.8-8.5
Industrial Sand
25/45
HQWorORW
20/30
HQWorORWEpdTrorPNA
10/16
HOW, ORW, SA SR,
PNA or any Trout
0.1/0.2
No Limit
CI¢IaWtheappllies:ater Qualfty N
60/25/10
N/A
Standardapplies
N/A
Standardapplis
N/A
Permit Date 10/1/2015-9/3012020 Last Revised 11-18-2015
Page 1 of 3

Certificate of Coverage No. NCG02 ❑❑❑❑
Wastewater Monitorina Reauirements. cont.
Outfall
No.
Date Sample
Collected
Daily Flow
Rate, cfs
pH,
SU
Total
Suspended
Solids (TSS),
mg/I
Settleable
Solids,
m1/1
Happllcable
Discharge
Turbidity, NTU
Upstream (U)
Turbidity,
NTU
Downstream
(D) Turbidity,
NTU
Fecal
Coliform,
col/100 ml
SA
mo/dd/yr
or "NO FLOW"
HQW orORW
60% of
7Q10
Indlcafa N0FL0WH
kable
freshwater
6.0-9.0
eal""te'
6.8-8.6
Industrial sand
26/46
HQWorORW
20/30
HOWorORWIRQTrorPNA
10/16
HOW, ORW, Sa se,
PNA,arany Trout
0.1/0.2
No Limit
Olrcle Water Quality
applies: dad
50/25/10
N/A
WaterQualStandard appi es
N/A
Standard appes
N/A
Permit Date 10/1/2015 — 9/30/2020 Last Revised 11-18-2015
Page 2 of 3

Certificate of Coverage No. NCG02 ❑❑❑❑
CERTIFICATION
I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who
manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and
belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations." [Required by 40 CFR §122.22]
Signature
Date
Mail Limit Violation DMR to Your DEMLR Regional Office Land Quality Section:
ASHEVILLE REGIONAL OFFICE
2090 US Highway 70
Swannanoa, NC 28778
[phone]
RALEIGH REGIONAL OFFICE
3800 Barrett Drive
Raleigh, NC 27609
[phone]
WINSTON-SALEM REGIONAL
OFFICE
450 Hanes Mill Road, Suite 300
Winston-Salem, NC 27103
[phone]
FAYETTEVILLE REGIONAL OFFICE I MOORESVILLE REGIONAL OFFICE
225 Green Street 1 610 East Center Avenue/Suite 301
Systel Building Suite 714
Fayetteville, NC 28301-5043
[phone]
WASHINGTON REGIONAL OFFICE
943 Washington Square Mall
Washington, NC 27889
[phone]
CENTRAL
Questions for The Central Office
Stormwater Permitting Program?
[phone]
Mooresville, NC 28115
[phone]
127 Cardinal Drive Extension
Wilmington, NC 28405M45
[phone]
Permit Date 10/1/2015 — 9/30/2020 Last Revised 11-18-2015
Page 3 of 3

g
74,
NWC'6E"W&
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
Forguidance on filling out this form, please visit: http://portal.ncdenr&&web/lr f nUdes-stormwaterI
Permit No.: �1/�/_/ / /_/_/_/_/ or Certificate of Coverage No.:
Facility Name:
County:
Inspector•
Date of Inspection:
Time of Inspection:
Total Event Precipitation (inches):
Phone No.
Was this a "Representative Storm Event' or "Measureable Storm Event" as defined by the permit?
(See information below.)
❑ Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
A "representative storm event' is a storm event that measures greater than 0.1 inches of rainfall
and that is preceded by at least 72 hours (3 days) in which no storm event measuring greater than
0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of no
precipitation.
A "measurable storm event" is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
Pagel of 2
SWU-242, Last modified 7/31/2013

A
1. Outfall Description:
Outfall No. Structure (pipe, ditch, etc.)
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors:
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.):
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
1 2 3 4 5
S. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
1 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition
may be indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 7/31/2013

PWA
Y*A
NCDE SIR
Stormwater Discharge Outfall (SDO)
Qualitative Monitoring Report
Forguidance on filling out this form, please visit: ht2 f f nortal.ncdenr.org jweb.11r f nodes-stormwater/
Permit No.: �/�/_/_/_/_/_/ /�/ or Certificate of Coverage No.:
Facility Name:
County:
Inspector:
Date of Inspection:
Time of Inspection:
Total Event Precipitation (inches):
Phone No.
Was this a "Representative Storm Event" or "Measureable Storm Event!' as defined by the permit?
(See information below.)
❑ Yes ❑ No
Please verify whether Qualitative Monitoring must be performed during a "representative storm
event" or "measureable storm event" (requirements vary, depending on the permit).
Qualitative monitoring requirements vary. Most permits require qualitative monitoring to be
performed during a "representative storm event" or during a "measureable storm event." However,
some permits do not have this requirement. Please refer to these definitions, if applicable.
A "representative storm event" is a storm event that measures greater than 0.1 inches of rainfall
and that is preceded by at least 72 hours (3 days) in which no storm event measuring greater than
0.1 inches has occurred. A single storm event may contain up to 10 consecutive hours of no
precipitation.
A "measurable storm event" is a storm event that results in an actual discharge from the
permitted site outfall. The previous measurable storm event must have been at least 72 hours
prior. The 72-hour storm interval does not apply if the permittee is able to document that a shorter
interval is representative for local storm events during the sampling period, and the permittee
obtains approval from the local DWQ Regional Office.
By this signature, I certify that this report is accurate and complete to the best of my knowledge:
(Signature of Permittee or Designee)
Pagel of 2
SWU-242, Last modified 7/31/2013

1. Outfall Description:
Outfall No. Structure (pipe, ditch, etc.)
Receiving Stream:
Describe the industrial activities that occur within the outfall drainage area:
2. Color: Describe the color of the discharge using basic colors (red, brown, blue, etc.) and tint
(light, medium, dark) as descriptors:
3. Odor: Describe any distinct odors that the discharge may have (i.e., smells strongly of oil,
weak chlorine odor, etc.):
4. Clarity: Choose the number which best describes the clarity of the discharge, where 1 is
clear and 5 is very cloudy:
1 2 3 4 5
S. Floating Solids: Choose the number which best describes the amount of floating solids in
the stormwater discharge, where 1 is no solids and 5 is the surface covered with floating solids:
1 -2 3 4 5
6. Suspended Solids: Choose the number which best describes the amount of suspended
solids in the stormwater discharge, where 1 is no solids and 5 is extremely muddy:
1 2 3 4 5
7. Is there any foam in the stormwater discharge? Yes No
8. Is there an oil sheen in the stormwater discharge? Yes No
9. Is there evidence of erosion or deposition at the outfall? Yes No
10. Other Obvious Indicators of Stormwater Pollution:
List and describe
Note: Low clarity, high solids, and/or the presence of foam, oil sheen, or erosion/deposition
may be indicative of pollutant exposure. These conditions warrant further investigation.
Page 2 of 2
SWU-242, Last modified 7/31/2013

Georgoulias, Bethany
From: Georgoulias, Bethany
Sent: Thursday, October 29, 2015 11:05 AM
To: [e-mail]'
Cc: Bennett, Bradley, Pickle, Ken
Subject: NPDES General Permit NCG02 Renewal Update - Special Notification for NCG020795
Dear Mr. Ferguson,
We are writing to notify you that your facility will receive a paper renewal package for this permit instead of an email
about renewing your Certificate of Coverage (COC) on-line for this mine site, covered under Certificate of Coverage No.
NCG020795 (Brushy Creek Mine). We realize that you requested the on-line renewal option and have been waiting for
those instructions and PIN to complete it. We wanted to get in touch about why you'll receive something different.
Inspections and sampling by U.S. EPA Region 4 staff earlier this year at three industrial mineral mines in western NC have
raised questions about whether this General Permit provides appropriate coverage for the discharges from similar types
of mining and processing operations. We will renew your facility's coverage under the General Permit, but we will
communicate special information with the renewal package. This site may need to apply for an individual NPDES permit
in the future.
Please be on the lookout for important correspondence from us in the coming weeks.
Regards,
The Stormwater Permitting Program
Bethany Georgoulias
Environmental Engineer
Stormwater Permitting Program, Division of Energy, Mineral, and Land Resources
N.C. Department of Environmental Quality
919 807 6372 office
bethanv. georgouliasna,ncdenr. gov
1612 Mail Service Center, Raleigh, NC 27699-1612 (mailing)
512 N. Salisbury Street, Raleigh, NC 27604 (location)
Website: http://t)ortal.ncdenr.oratweb/Ir/stormwater
F -:5i Nothing Compares,
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.

k-A
NtCDEN62
North Carolina Department of Environment F.nd
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
September 16, 2011
Mike Vencill
Unimin Corporation Schoolhouse Quartz
PO Box 588
Spruce Pine, NC 28777
Natural Resources
Dee Freeman
Secretary
Subject: General Permit No. NCG020000
Unimin Corporation Schoolhouse Quartz
COC NCGO20795
Mitchell County
Dear Mr. Vencill:
In accordance with your application for a discharge permit received on May 12, 2011, 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 October 15, 2007 (or as subsequently amended).
Please take notice that this certificate of coverage is not transferable except after notice to the
Division of Water Quality. The Division of Water Quality may require modification or revocation and
reissuance of the certificate of coverage.
This general permit allows the discharge of stormwater and certain types of wastewater from your
facility. In your application, you specified that only mine dewatering water would be discharged from
this facility. If separate point -source discharges of stormwater occur (i.e., stormwater not combined with
mine dewatering water), you will be required to adhere to the conditions in this permit for stormwater
discharges.
This permit does not affect the legal requirements to obtain other permits which may be required
by the Division of Water Quality 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 Brian Lowther at telephone
number [phone].
Sincerely,
for Coleen H. Sullins
cc: Asheville Regional Office
Central Files
Stormwater Permitting Unit Files
Weands a id Stonnwater Branch One
161 i Mail Samoa Center, Ralegh, Nor i Carolina 27699-1617 VoGarolina.Location: 5,8 N. '-63Ci ury St. ReleghrNonh Carolina 27604 �����Phone: 91: 80'--63[ 1FAX: 919A07-,1941 Cu omer 8ervice:177523- '48 f
Internet wv w.,icwalc auality.org
An Equa!:L,r^.rtuaity l A nnative Aetiv 6 Toyer

STATIC OF NORTH C!RO r,INA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERNUT NO. NCG020000
CERTIFICATE OF COVERAGE No. NCG020795
STORMWATER AND MINE DEWATERING 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 mine dewatering water from a facility located at
Unimin Corporation Schoolhouse Quartz
107 Harris Mining Company Road, Hwy 19E
Spruce Pine, NC
Mitchell County
to receiving waters designated as Brushy Creek and the North Toe River, class C; Tr waters in
the French Broad River Basin, in accordance with the effluent limitations, monitoring
requirements, and other conditions set forth in Parts I, H, III, IV, V, and VI of General Permit No.
NCG020000 as attached.
This certificate of coverage shall become effective September 16, 2011.
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this 161h day of September, 2011.
for Coleen H. Sullins, Director
Division of Water Quality
By the Authority of the Environmental Management Commission

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NCGO20795
N
w I - F,
L
S
Nk ) Scale '24.00
Unimin Corporation
Schoolhouse Quartz
Lad tude: 35° 56' 48" N
Longitude: 820 00' 16" 1>'1I
County: Avery
F'ecei�ing Stream: North Toe River/ Brushy Creek
Stream Class: C; Tr/ C; T
Sub-b-3sin : ":4-03-06 (Fr-�nch E. oad River Basin)
Jos
Faci'i ty Location

Jeff Ferguson/Unimin To "Lowther, Brian" <[e-mail]>
08/19/2011 04:10 PM cc Scott Fortner/Unimin@UNIMIN
• • bcc
Subject Schoolhouse Revised Farm
Hi Brian,
Attached copy of cover letter plus revised page 219. Hard copy in the mail. Hopefully Scott will be
sending the stormwater DMRs to you very soon. Thanks for your help with this.
Jeff
110819 SQ N01 CoverplusRevisedForm.pdf
"Lowther, Brian" <[e-mail]>
0 "Lowther, Brian"
<[e-mail]> To "[e-mail]" <[e-mail]>
08/19/2011 03:43 PM cc
Subject RE. data from Unimin Quartz Mine, Crystal Mine
Hey Jeff,
I talked with you on the phone the other day requesting the data for the Schoolhouse site. I
recently talked to Jennifer Jones and she informed me that she got you to update your
application to the correct owner for one of the sites she is permitting. Can you please do the
same thing for the Schoolhouse NOI? Thanks.
Brian
Brian C. Lowther R[WROW[AN
Environmental Engineer SEP 0 g
NCDENR I DWQ I Stormwater Permitting Unit 2011
1617 Mail Service Center, Raleigh, NC 27699-1617 OENR-WATER
512 N. Salisbury St, Raleigh, NC 27604 WEXAt6ANDS�r OWCH
Phone: [phone]
Email: brian.lowther(ancdenr.gov
Website: http://portal.ncdenr.orehvebhvq/ws/su
E-mail correspondence to and from this address may be subject to the North Carolina
Public Records Law and may be disclosed to third parties.
From: Jones, Jennifer

�
57�
UNIMIN CORPORATION - Schoolhouse Quartz Facility, Avery County Phone No. 828-765-4251
J
Stormwater Discharge Sampling Certificate of Coverage No. NCG020112
(Sample each structure's discharge at intervals not less than one year apart during a representative storm event.) ,/ V
Representative Storm Event: A storm event that is between 0.2 and 0.8 inches of rainfall and which has a duration of }�
greater than 3 hours and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches
has occured. 0
Notes: 1 - If the detention pond detains for 24 hours the runoff generated by one inch of rainfall, a grab sample of the Certified Laboratory(s): Unimin Schoolhouse
discharge from the pond shall be collected within the first 30 minutes of discharge. Lab # 555
2 - visual observations of the discharge for color, foam, outfall staining, visible sheens and dry weather flows, are
required but analytical sampling shall not be required.
3 - the pond shall be considered a non -discharging Stormwater control system and not subject to NPDES requirements,
unless the discharge causes a violation of water quality standards.
Date: 11/30/06 Time samples taken: 14:00-1436 pm Samples taken by: Steve Taylor
Precipitation: .46 inches Event Duration: 18.5 Hrs
Outfall No.
Settleable
Solids:
Turbi :
H:
Total
Suspended
Solids
mUl
NTUs
unit
MR/1
MR 1
<.1
192.0
7.1
200.0
SCW 1-A
<.1
39.6
7.1
5.0
PLT1
<.1
37.0
6.9
7.0
I
i
i
i
i
I
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new
motor oil per month? yes X no
Mail Original and one copy to:
Attn: Central Files
Division of Water Quality
DENR
P.O. Box 29535
Raleigh, NC 27626-0535
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gather and evaluate the information submitted. Based Jon my Inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowlege and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations."
(Signature of Permittee) (Date)

UNIMIN CORPORATION - Schoolhouse Quartz Facility, Avery County Phone No. 828-765-4251 (j /
Stormwater Discharge Sampling Certificate of Coverage No. NCG020112
(Sample each structure's discharge at intervals not less than one year apart during a representative storm event.)
Representative Storm Event: A storm event that is between 0.2 and 0.8 inches of rainfall and which has a duration of
greater than 3 hours and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches
has occured.
Notes: 1 - If the detention pond detains for 24 hours the runoff generated by one inch of rainfall, a grab sample of the Certified Laboratory(s): Unimin Schoolhouse
discharge from the pond shall be collected within the first 30 minutes of discharge. Lab # 555
2 - If the detention pond discharges only in response to a storm event exceeding a ten year design storm (5.0 inches),
visual observations of the discharge for color, foam, outfall staining, visible sheens and dry weather flows, are
required but analytical sampling shall not be required.
3 - If the detention pond discharges only in response to a storm event exceeding a 25-year, 24-hour storm (5.8 inches),
the pond shall be considered a non -discharging stormwater control system and not subject to NPDES requirements,
unless the discharge causes a violation of water quality standards.
Date: 12/16/07 Time samples taken: 14:15- 1443 pm
Precipitation: .62 inches Event Duration: 17 Hrs
Outfall No.
Settleable
Solids:
Turbi
H:
Total
Suspended
Solids
mUl
NTUs
unit
ro /l
MR1
<.1
160.0
7.2
14.2
SCW1-A
<.1
35.0
7.3
9.4
PLT1
<.1
39.0
7.0
6.4
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new
motor oil per month? yes X no
Samples taken by: Steve Tavlor
Mail Original and one copy to:
Attn: Central Files
Division of Water Quality
DENR
P.O. Box 29535
Raleigh, NC 27626-0535
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gather and evaluate the information submitted. Based Jon my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowiege and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations."
(Signature of Permittee) (Date)

UNIMIN CORPORATION - Schoolhouse Quartz Facility, Avery County Phone No. 828-765-4251
Stormwater Discharge Sampling Certificate of Coverage No. NCG020112
(Sample each structure's discharge at intervals not less than one year apart during a representative storm event.)
Representative Storm Event: A storm event that is between 0.2 and 0.8 inches of rainfall and which has a duration of
greater than 3 hours and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches
has occured.
Notes: 1- If the detention pond detains for 24 hours the runoff generated by one inch of rainfall, a grab sample of the Certified Laboratory(s): Unimin Schoolhouse
discharge from the pond shall be collected within the first 30 minutes of discharge. Lab # 555
2 - If the detention pond discharges only in response to a storm event exceeding a ten year design storm (5.0 inches),
visual observations of the discharge for color, foam, outfall staining, visible sheens and dry weather flows, are
required but analytical sampling shall not be required.
3 - If the detention pond discharges only in response to a storm event exceeding a 25-year, 24-hour storm (5.8 inches),
the pond shall be considered a non -discharging stormwater control system and not subject to NPDES requirements,
unless the discharge causes a violation of water quality standards.
Date: 11/13/08 Time samples taken: 14:45-1615 am
Precipitation: 1.19 inches Event Duration: 8.5 Firs
Outfall No.
Settleable
Solids:
Turbi
H:
Total
Suspended
Solids
ml/1
NTUs
unit
m
MR1
<.1
217.0
7.0
84.6
SCW1-A
<.1
91.9
7.1
102.6
PLT 1
<.1
19.3
6.6
14.0
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new
motor oil per month? yes X no
Samples taken by: Steve Taylor
Mail Original and one copy to:
Attn: Central Files
Division of Water Quality
DENR
P.O. Box 29535
Raleigh, NC 27626-0535
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gather and evaluate the information submitted. Based jon my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowlege and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations."
(Signature of Permittee) (Date)

VL/
UNIMIN CORPORATION - Schoolhouse Quartz Facility, Avery County Phone No. 828-765-4251 YP
O�
V 1
Stormwater Discharge Sampling Certificate of Coverage No. NCG020112
(Sample each structure's discharge at intervals not less than one year apart during a representative storm event.)
Representative Storm Event: A storm event that is between 0.2 and 0.8 inches of rainfall and which has a duration of
greater than 3 hours and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches
has occured.
Notes: 1 - If the detention pond detains for 24 hours the runoff generated by one inch of rainfall, a grab sample of the Certified Laboratory(s): Unimin Schoolhouse
discharge from the pond shall be collected within the first 30 minutes of discharge. Lab # 555
2 - If the detention pond discharges only in response to a storm event exceeding a ten year design storm (5.0 inches),
visual observations of the discharge for color, foam, outfall staining, visible sheens and dry weather flows, are
required but analytical sampling shall not be required.
3 - If the detention pond discharges only in response to a storm event exceeding a 25-year, 24-hour storm (5.8 inches),
the pond shall be considered a non -discharging stormwater control system and not subject to NPDES requirements,
unless the discharge causes a violation of water quality standards.
Date: 12/2/09 Time samples taken: 9:45-10:14 am
Precipitation: .77 inches Event Duration: 6.25 Hrs
Outfall No.
Settleable
Solids:
Turbi
H:
Total
Suspended
Solids
mUI
NTUs
unit
m i
MR1
<.1
91.5
6.6
17.0
SCW1-A
<.1
157.0
6.7
54.0
PLT 1
<.1
147.0
6.7
45.0
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new
motor oil per month? yes X no
Samples taken by: Steve Taylor
Mail Original and one copy to:
Attn: Central Files
Division of Water Quality
DENR
P.O. Box 29535
Raleigh, NC 27626-0535
"I certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gather and evaluate the information submitted. Based jon my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowlege and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations."
(Signature of Permittee) (Date)

UNIMIN CORPORATION - Schoolhouse Quartz Facility, Avery County Phone No. 828-765-4251
Stormwater Discharee Sampling Certificate of Coverage No. NCG020112
(Sample each structure's discharge at intervals not less than one year apart during a representative storm event.)
Representative Storm Event: A storm event that is between 0.2 and 0.8 Inches of rainfall and which has a duration of
greater than 3 hours and that is preceded by at least 72 hours in which no storm event measuring greater than 0.1 inches
has occured.
Notes: 1- If the detention pond detains for 24 hours the runoff generated by one inch of rainfall, a grab sample of the Certified Laboratorv(s): Unimin Schoolhouse
discharge from the pond shall be collected within the first 30 minutes of discharge. Ln b 555
2 - visual observations of the discharge for color, foam, outfall staining, visible sheens and dry weather flows, are
required but analytical sampling shall not be required.
3 - the pond shall be considered a non -discharging stormwater control system and not subject to NPDES requirements,
unless the discharge causes a violation of water quality standards.
Date 09/25/2010 Time sample taken 13:17-13:50
0.5
Event Duration: 6.0 hours
Outfall No.
Settleable
Solids:
Turbit
H:
Total
Suspended
Solids
mUl
NTUs
unit
m I
MRl
<.I
77.3
6.9
12.0
SCWI-A
<,1
96.4
6.9
46.0
PLT 1
<, I
122.5
7.1
31.0
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new
motor oil per month? _ yes _ no
Samples taken by: L. S. Fortner
Mail Original and one copy to:
Attn: Central Files
Division of Water Quality
DENR
P.O. Box 29535
Raleigh, NC 27626-0535
"t certify, under penalty of law, that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly
gather and evaluate the information submitted. Based jon my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information
submitted is, to the best of my knowlege and belief, true, accurate, and complete. I am aware that there are signipeant penalties for submitting false information, including the possibility of fines and
imprisonment for knowing violations."
(Signature of Permittee) (Date)

Lowther, Brian
From: Cranford, Chuck
Sent: Wednesday, September 14, 2011 2:59 PM
To: Lowther, Brian
Subject: RE: SW General Permit NCG020795
Hey Brian —
Please issue the COC for Schoolhouse.
Thanks,
Chuck
Chuck Cranford - [e-mail]
North Carolina Dept. of Environment and Natural Resources
Asheville Regional Office
Division of Water Quality - Surface Water Protection Section
2090 U.S. 70 Highway
Swannanoa, NC 28778
Tel: [phone]
Fax: [phone]
Email correspondence to and from this address is subject to
the North Carolina Public Records Law and may be disclosed
to third parties unless the content is exempt by statute or
other regulation.
From: Lowther, Brian
Sent: Wednesday, September 07, 20114:19 PM
To: Cranford, Chuck
Subject: SW General Permit NCG020795
Chuck,
I know we have discussed these permits a fair amount but I want to get your approval to issue
our general permit for Unimin's Schoolhouse.F.acility. I was waiting on their sampling data
and finally received it. I didn't realize that their WW permit did not include Chloride or
Flouride like Red Hill. Their sampling results only include parameters already in the
general permit. They do have some samples over TSS benchmark so that could be an issue. I
have attached the NOI. Let me know if you would like to see the DMRs they send me.
Does the Asheville Regional Office have any concerns about issuing this facility a COC for
this general permit, and are there any potential impacts to wetlands? If we do not hear back
from you, we'll issue the COC in 30 days.
Brian
Brian C. Lowther
1

Environmental Engineer
NCDENR I DWQ I Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Email: hrian.lc�wtl�er(�r'.nccicnr.c�t :`` '
Website: http://portal.ncdenr.org/web/wg/ws/su
E-mail correspondence to and from this address may be subject to the North Carolina Public Records
Law and may be disclosed to third parties.
2

xW"' " . Ii•. UnIN
i k
J ' ' Environmental Affairs
Unimin Corporation
136 Crystal Drive a Spruce Pine, NC 28777
(PHONE) 828/766-60819 (FAX) 828/765-4755
August 19, 2011
Mr. Bryan Lowther
Stormwater and General Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Unimin Corporation — Schoolhouse Quartz Facility
Mr. Lowther,
Per your email request today, please find enclosed revised NOI form page 2 of 9 for
Unimin's Schoolhouse Quartz Facility. If you have any questions regarding this matter or
require further information, please do not hesitate to contact me at [phone] ext.13.
Sincerely,
Jef rey S. Ferguson, P. E.
Environmental Engineer
UNIMIN CORPORAnON
Enclosure
c: LA Files, Scott Former, Mike VenciII
S%:

Q� Division of Water Quality / Surface Water Protection
NCDENR National Pollutant Discharge Elimination System
N C OLIw Dv+ FmEM Or
ErvviRo mn rtmO Ne Rg Rcwu,aces
NCG020000
NOTICE OF INTENT
FOR AGENCY USE ONLY
Date Received
Year 1 Month
1 Da
Certificate
of Covera e
e�
Check #
I Amount
lD?5cq5ll
4I0O.
Permit Assi ned to
l ow r
National Pollutant Discharge Elimination System application for coverage under General Permit
NCG020000:
STORMWATER DISCHARGES associated with activities classified as:
SIC (Standard Industrial Classification) Code - 14XX Mineral Mining Industry (except as specified below)
The following activities are also included:
Active or inactive mining operations (including borrow pits —except for NCDOT borrow pits) that discharge
stormwater contaminated with or that has come in contact with, any overburden, raw material, intermediate
products, finished products, byproducts or waste products located on the site of such operations;
Stormwater from vehicle maintenance activities at mining operations;
Overflow from facilities that recycle process wastewater; and/or
Mine dewatering (wastewater)
The following activities are specifically excluded from coverage under this General Permit:
Stormwater discharges associated with peat mining, coal mining, and metal mining;
Stormwater discharges from mining operations which are intermixed on site with stormwater from asphalt
operations and/or concrete operations;
Stormwater discharges associated with oil and gas extraction operations; and
Stormwater discharges associated with tourist gem mines
NCDOT borrow pits are covered under NCS000150
The following discharges are covered by NPDES general permit NCG520000 instead of NCG020000:
Point source discharges of stormwater and wastewater from in -stream sand mining operations (i.e., sand
dredging or dipping operations)
For new mining sites that require an authorization to construct (ATC) wastewater treatment facilities: This
NOI is also an APPLICATION FOR an ATC for new wastewater treatment facilities. ATC requests must be
submitted at least 90 days prior to construction'.
For existing mining sites that require an Authorization to Operate (ATO) wastewater treatment facilities:
This NOI is also an APPLICATION FOR an ATO for wastewater treatment facilities in place.
Construction, modification, or installation of any new treatment components at an existing site requires an
ATC. (If the site is already covered by NCG020000, the ATC request may be submitted without an NOI).
Some wastewater treatment facilities used to treat or recycle wastewater at mining sites will require an ATC rp for
to construction per 15A NCAC 2H .0138. Please seethe NCG020000 General Permit for details about which
treatment facilities require an ATC (summarized in Table 1 below). The authorization to construct or continue
to operate will be issued at the same time as the Certificate of Coverage (COC) for the NCG02 permit. Design of
treatment facilities must comply with requirements of 15A NCAC 2H .0138 & .0139.
Page 1 of 9
'As per 15A NCAC 2H .0106
Unless treatment facilities are designed, constructed, and put into operation by employees internal to the company who are qualified to perform
such work for their respective companies in accordance with General Statutes, 89C-25 (7), plans and specifications must be signed and sealed
by a P.E.
SWU-NCG02-NOI Last revised 06107/2010

NCG020000 N.O.I.
Construction of wastewater treatment facilities subject to the ATC/ATO requirements in the NCG02 permit
at new or existing mining sites requires submission of three (3) sets of plans and specifications signed
and sealed by a Professional Engineer (P.E.) or qualified staff2 along with this application. A copy of the
design calculations should be included. Please see questions 18 & 19.
-
bli�1 aofWas er ra
�.� .-
e"`'�P rRets '
€g€ x
...rt c
pm
3
SFr .eVill
MD Discharges that do not need treatment
other than E&SC to meet permit conditions
✓
✓
MD Discharges thatneed treatment other than
✓
✓
E&SC to meetp\ rmit conditions
IMRI
:� rQ.. f
.�-u•.- y..—
4�{jx1y' , �sde.;
`;r. .'.
Other Reckle
✓
✓
Closed Loop Recycle
✓
✓
Any Other Process WAN
✓
✓
For questions, please contact the DWQ Regional Office for your area. (See page 7)
(Please print or type)
1) Mailing address of ownerloperator (address to\which all Permit correspondence will be mailed):
UYA;Yy�n
Owner Name Coi•A6("04;QL1 sS�100`V\OVSe 0Va
Owner Contact 1111KE V.�V4*11.L - A_A*4-r /MMAir€/L
Street Address PD Rcx. 016
City Sow P'ne State ZIP Code 2.'�727
Telephone No. 76 5-q 151 Fax: 66 MY
E-mail Address Myel+c-` 1 L°'lJN'�••r • �v .�-�
2) Location of facility producing discharge:
Facility Name Ui\IYAIA CyrDoCo'_4101\ ScHoojhGVse ayarkZ.
Facility Contact f1077` K
Street Address t 07 Nam; Minina Corrmpany i4ild t_v,, l4 6City Tryr P►n� State /l%C� ZIP Code 2$777
County A i+che a
Telephone No. 5 23 76 5- g Z 5 l Fax: K29
Contact E-mail S-4 &,el i•�- . �o,y.
3) Physical Location Information:
Please provide a narrative description of how to get to the facility (use street names, state road numbers, and
distance and direction from a roadway intersection). i 11r=
QtOD f 0 X nV2 Aq 5 rA eCLSk06D&A ICLr=- crom S c'Pl'oe
4) Latitude St 5e 4US M Longitude$Z" 0616.1 W (degrees, minutes, seconds)
Page 2of9
SWU-NCG02-NOI Last revised 6/7/2010

NCGO20000 N.O.I.
and sealed by a Professional Engineer (P.E.) or qualified staff= along with this applitallion. A copy of the
Please see
Table 1: Summary of Wastewater Permit Requirements
Quarterly
Monitoring?
Requires
AtoC?
Mine Dewaterfng(MD)
Yes
No
Yes
No
MD Discharges that do not need treatment
other than E&SC to meet permit conditions
MD Discharges that need treatment other than
E&SC to meet permit conditions
_
Process Wastewater
Other Recycle
Dosed Loop Recycle
Any Other Process W W
For
7/ease contact the DWQ Regional Office for your area.
(Please print or type)
1) Mailing address of owner/operator (address to which all Permit correspondence will be mailed):
Owner Name /I/n/1 *^ ' .'1
Owner Contact A,,gxE a lr 6 ,e m DES' S ✓P Ems✓ r* N^ f n+� <</y cf
Street Address Z5S9 EGM r7-
City z✓,61-1 Z, ,✓A fi✓ State ZIP Code eP 6.fVV
Telephone No. Z03 966 -999 o Fax: 7- o 3 g66 - /977
E-mail Address Gf �✓/p a��e y % i/ v,` /o r
i
2) Location of facility producing discharge:
Facility Name 1/� �,s �dRioF ¢no ✓ $LNao«��cr QuA,rT s �ftc,�.ry
Facility Contact >07r fP47W :,C ) vPE,[✓,t e,<
Street Address /07 lbf-,vie is M N/ Vo- Lo / a y /Zo A -A . /! NY • / 9E
City 51;'R ucE A rE State Nc ZIP Code 2,P7�
CountyTelephone No. 92A? 76s-y2s/ Fax: .PZB 76S-461"?
Contact E-mail C 1 o rr,ye /- A0 k"V" » %N . eo M
3) Physical Location Information:
Please provide a narrative description of how to get to the facility (use street names, state road numbers, and
distance and direction from a roadway intersection). Lot<r s0 or �� / 9r �T r.>c o� NG Nay / 9E
4) Latitude 35'_or'b_yP.S5_�Longitude 5fl? 00�14.33� (degrees, minutes, seconds)
Page 2 of 9
SW U-N0002-NOI Last revised 6 72010

NCG020000 N.O.I.
Permits:
5) This NPDES Permit Application applies to which of the following:
❑ New or Proposed Facility Date operation is to begin
W Existing
❑ New Permit not applicable — ATC request only. NPDES Permit Number
6) Standard Industrial Classification:
Provide the 4 digit Standard Industrial Classification Code (SIC Code) that describes the primary industrial
activity at this facility
SIC Code: L q S 1
7) Provide a narrative description of the types of minerals mined at this facility: /t
00r t / 1&s_k,� Ore-
Lf t /
8) Is this mine an inactive mine site?
)<No
❑ Yes If yes, do you posses an "Inactive Renewal" from DLR and notified the DWQ Regional Office or
have you certified to the DWQ that the site has been stabilized? ❑ No ❑ Yes
9) Does this facility already have a valid Mining Permit from the Division of Land Resources (DLR)?
❑ No
KYes
If No, please indicate the status of the Mining Permit application:
If yes, please provide the Mining Permit number: 0 6 -- 0 5
copy of your DLR Mining Permit with this DWQ application.
Please also provide a
Note: DWQ cannot issue a COC for the NCGO20000 General Permit until a Mining Permit is issued or
renewed by the Division of Land Resources (DLR).
10) Does this facility have any other NPDES permits?
❑ No
'Yes If yes, list the permit numbers for all current NPDES permits for this facility: ( 0000 3 61,
11) Does this facility have any Non -Discharge permits (ex: recycle permits)?
&'1Vo
❑ Yes If yes, list the permit numbers for all current Non -Discharge permits for this facility:
12) Does total area of this mine site include ready -mix and asphalt areas?
>@<No
❑ Yes
If yes, do they have DWQ stormwater permits (if owned by the same company)? ❑ No
(provide permit number
If not owned by the same company, who is the owner?
13) Will this mining operation precede development activities at this site?
No
❑ Yes
❑ Yes
14) Is this mine located within one of the 20 Coastal Counties and will it add more than 10,000 W of impervious
surface?
Aq;;k!o
Page 3 of 9
SWU-NCG02-NOI Last revised 6/7/2010

NCG020000 N.O.I.
❑ Yes If yes, you may be required to apply for an additional state stormwater permit. Check with your
local Regional Office. See contact information and checklist below.
15) Is this mine located the Neuse, Tar -Pamlico, or Catawba River Basin, or the Randleman or Jordan
Water supply Watersheds?
�No
❑ Yes If yes, what size stream buffers are included on site? ft. Please show buffers in site plans.
Discharae Points, Receivina Waters & Wetlands:
16) Receiving waters:
What is the name of the body or bodies of water (creek, stream, river, lake, etc.) that the facility stormwater
and/or wastewater discharges end up in? A%r.�h Toe QtJ-ed
If the site stormwater discharges to a separate storm sewer system, name the operator of the separate storm
sewer system (e.g. City of Raleigh municipal storm sewer).
Receiving water classification (if known): ( , Tr
Note: Discharge of process wastewater to receiving waters classified as WS-II to WS-V or SA must be
approved by the N.C. Dept. of Environmental Health. If DEH does not approve, coverage under
NCG020000 cannot be granted. No new discharges of wastewater are permitted in receiving
waters classified as WS-1 or freshwater ORW. Wastewater discharges to Saltwater ORW will
not be approved under the NCG02 General Permit.
17) If your facility has wastewater discharges and they are to HWQ, PNA waters (Primary Nursery Areas) waters,
what is the flow rate? A /at (See http://www.ncdmf.nettmaps/FNA maps/index.html, for map)
18) Discharge Points:
Number of discharge points (ditches, pipes, chanels, etc. that convey discharges from the property):
Onsite: Stormwater: 16 _ Mine dewatering: Process Wastewater Overflow:
Offsite: Stormwater: _0 Mine dewatering: Process Wastewater Overflow:
Discharge points should be clearly marked on the submitted site plan.
Please provide short narrative description of discharges: ^ ' is �wtS act: ur
U dirne s� zs"o e
`� kr v nrm P11PrA-,_ n(-ni.tL 1%r%c �%A.A mm�teA. _S..Xj c
a) Is your mine dewatering and discharging? (Answer only if you are dewatering)
❑ No
WYes If yes, where to? Surface Waters and/or Wetlands (on -site or off -site)
Other (on -site or off -site) Describe:
b) Are you dewatering but not discharging? (Answer only if you are dewatering)
XNo
❑ Yes If Yes, please explain how you are dewatering, and where that water will be directed:
Page 4 of 9
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NCG020000 N.0.1.
19) Will mining operations require dewatering near wetlands or impact any stream, groundwater, or wetlands?
❑ No
Yes
Note: Wetlands must be CLEARLY DELINEATED on the site plan. Mine dewatering activities that have
the potential to drain wetlands or otherwise impact surface water or groundwater MUST develop and
implement a Pumping Operation and Monitoring (O&M) Plan that has been approved by the
Division.
For sites that may drain wetlands — approval of a Pumping O&M Ulan may be required prior to
coverage under this -general permit. The Pumping O&M Plan should be submitted to the
appropriate Regional Office and must be approved prior to operation.
The plan shall include, but is not limited to: (1) Groundwater monitoring strategies to demonstrate the
effect of pumping and to establish any pumping regime necessary to reduce impacts, and (2) Detailed
plans to maintain surrounding hydrology and respective monitoring to demonstrate compliance. See
checklist at end of document. Contact your local Regional Office for questions specific to your mine.
20) If you are dewatering, are there wetlands or surface waters within 400' of the mine pit perimeter?
❑ No �O©
Ayes If yes, what distance are they from the mine pit perimeter?'� feet.
21) Have you been required to obtain a 4041401 Certification permits?
-1<No
❑ Yes if yes, please briefly describe below (include information such a required mitigation, BMPs, setbacks,
and/or O&M plans for on or off -site wetlands or other pertinent information). Attach other sheets as necessary.
rVA r
22) Have you been required to obtain a wetland delineation certified by the US Army Corps of Engineers?
�No ❑ Yes If yes, please attach to application submission.
Stormwater BMPs:
23) Does this facility employ any best management practices for stormwater control?
❑ No f<Yes If yes, please briefly describe:
24) Does this facility have a Stormwater Pollution Prevention Plan?
❑ No XYes
If yes, when was it implemented? AftJ 2000
25) Will vehicle maintenance activities occur at this facility?
KNo ❑ Yes
Page 5of9
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NCG020000 N.O.I.
Wastewater Treatment Facilities:
26) Will mine dewatering discharges occur? (An ATC/ATO is required for wastewater treatment facilities'
dewatering discharges where E&SC devices alone will not meet effluent limits and/or protect water quality
standards).
❑ No
XYes
27) Will discharges of overflows from process wastewater treatment systems occur? (ATC or ATO required,
unless closed -loop recycle system)
No
❑ Yes
If yes, answer the following questions for each wastewater treatment system:
a. Please describe the type of process used to treat and/or recycle the process wastewater. Give
design specifics (i.e. design volume, retention time, surface area, etc.). Existing treatment facilities
should be described in detail, and design criteria or operational data should be provided (including
calculations) to ensure that the facility can comply with requirements of the General Permit. [Use
separate sheet(s)]
b. Does this facility employ chemical additives to flocculate suspended solids? ❑ No ❑ Yes
If yes, please state the name, manufacturer and the quantity of average daily usage of the
chemical additive
Note: Please see our website for a list of evaluated polyacrylamide (PAMS) products for use in North Carolina.
C. Does this facility overflow only during rainfall events exceeding the 10-yr, 24-hr rainfall event?
❑ No ❑ Yes
28) Are wastewater treatment facilities (including recycle systems) planned in the 100-year flood plain?
;<No
❑ Yes If so, include information to demonstrate protection from flooding. (Minimum design requirements for
treatment works include protection from the 100-year flood, per 15A NCAC 2H .0219.)
Other:
29) Hazardous Waste:
a) Is this facility a Hazardous Waste Treatment, Storage, or Disposal Facility?
�No ❑ Yes
b) Is this facility a Small Quantity Generator (less than 1000 kg. of hazardous waste generated per month) of
hazardous waste?
�No ❑ Yes
c) Is this facility a Large Quantity Generator (1000 kg. or more of hazardous waste generated per month) of
hazardous waste?
1,_ANo ❑ Yes
d) If you answered yes to questions b. or c., please provide the following information:
Type(s) of waste:
Page 6 of 9
SWU-NCG02-NOI Last revised 6/7/2010

NCG020000 N.O.I.
How is material stored: _
Where is material stored:
How many disposal shipments per year:
Name of transport / disposal vendor: _
Vendor address:
30) Are you applying for a mining permit in the same location as a previously permitted mine?
4No
❑ Yes If yes, specify permit number and name if known:
31) Does your site have an active landfill within the mining permit boundary?
•f!I�No
❑ Yes If yes, specify type: ❑ LCID ❑ Other:
32) Is your facility providing appropriate secondary containment for bulk storage of liquid materials? See permit
text online for secondary containment requirements.
❑ No
Yes
Final Checklist:
This application will be returned as incomplete unless all of the following items have been included and
initialed for. Please show that the following required information has been included by initialing in each
space below.
Fee of $100 made payable to NCDENR
Completed application and all supporting documents
Copy of the valid approved mining permit (MP) for the facility or indication of MP application status
Copy of a county map or other general location map that shows the mining site and nearest major roads
Copy of USGS topographic map showing the mining site and surrounding areas, or other map that clearly
shows site location in relation to nearby streams, wetlands, and other waters, etc.
2 copies of large-scale site plan with topographical lines with all outfalls, applicable buffers and wetlands
clearly delineated
A copy of your DLR mining permit
t1 A- A copy of your US Army Corps -approved wetland delineation if you marked "yes" to question 22 above.
If mine site is in one of the 20 Coastal Counties,
• Applicant has checked with the appropriate regional office to verify the need for a Coastal State
Stormwater permit. Regional Office Contact:
• Applicant has included a detailed list of impervious surface areas and percentages, sub -drainage
areas and total drainage area.
XIA If the mine is dewatering and near wetlands, or may otherwise impact surface waters or groundwater,
Include the following and contact your local regional office about a Pumping O&M Plan (see below
for contact information). You may be required to provide an approved Pumping O&M plan arior to
NCG02 issuance.
2 copies of detailed Full Size Plans delineating areas on the plans and listingacreage (including:
wetlands, ditches, well -placements, pits, borrow areas, overburden storage, stormwater controls/BMPs,
vehicle maintenance areas, settling basins, product process (such as screening, stockpiles, waste
piles), total drainage area, impervious surface percentages (if state sw programs apply), applicable
buffers, and access and/or haul roads).
Well information (design, depths, maintenance)
Physical monitoring for the wetlands areas
Settling pond sizing information, if applicable
Page 7 of 9
SWU-NCG02-NOI Last revised 6/7/2010

NCG020000 N.O.I.
Level spreader design, if applicable
Details about dewatering method
Cone of influence calculations
Description of measures to prevent erosion and flooding
Description & information about 401/404 permits that have been obtained
Copy of US Army Corps of Engineers wetland delineations or approved wetland delineation (if
applicable)
I have contacted my local regional office about a Pumping O&M Plan.
Regional Office Contact: Date contacted:
-OR-
I will not any impact nearby wetlands, surface waters or groundwater by dewatering.
N A If an ATC or ATO is required, three (3) sets of plans, specifications, and design calculations, signed, sealed,
and dated by a P.E. ATC and ATO requirements in NCG02000 are summarized in Table 1 on Page 2 of
this NOI (see the permit text for more details). Plans shall show all pertinent design features, including the
location of the outfall(s). If stormwater is flowing off -site, the plan must show that stormwater will not be
mixed with wastewater.
Certification: North Carolina General Statute 143-215.6 b (1) provides that:
Any person who knowingly makes any false statement, representation, or certification in any application, record, report, plan, or other
document filed or required to be maintained under this Article or a rule implementing this Article; or who knowingly makes a false
statement of a material fact in a rulemaking proceeding or contested case under this Article; or who falsifies, tampers with, or knowingly
renders inaccurate any recording or monitoring device or method required to be operated or maintained under this Article or rules of the
[Environmental Management] Commission implementing this Article shall be guilty of a Class 2 misdemeanor which may include a fine not to
exceed ten thousand dollars ($10,000).
I hereby request coverage under the referenced General Permit. I understand that coverage under this permit
will constitute the permit requirements for the discharge(s) and is enforceable in the same manner as an
individual permit.
I agree to abide by the following as a part of coverage under this General Permit:
1. I agree to abide by the approved Mining Permit for this mining activity. (A copy of the valid
mining permit must be attached to this request.
2. 1 agree to not discharge any sanitary wastewater from this mining activity except under the
provisions of another NPDES permit specifically issued therefore.
3. 1 agree that bulk storage of petroleum products and other chemicals shall have adequate
protection so as to contain all spills on the site.
4. 1 agree that solid wastes will be disposed of in accordance with N.C. statutes and rules
governing solid waste disposal.
5. 1 agree that maintenance activities for vehicles and heavy equipment will be performed so as to
not result in contamination of the surface or ground waters.
Page 8 of 9
SWU-NCG02-NOI Last revised 6/7/2010

NCG020000 N.O.I.
I agree to abide by the provisions as listed above and recognize that the provisions are to be considered as
enforceable requirements of the General Permit.
I certify that I am familiar with the information contained in this application and that to the best of my knowledge
and belief such information is true, complete, and accurate.
Printed Name of Person Signing: ,/iNox G, B/lADL�Y
Title: A's4w
(Signature ofApplicant)
S
(Date
Notice of Intent must be accompanied by a check or money orderfor $100.00 made payable to NCDENR.
Mail the entire package to:
Stormwater and General Permits Unit
Division of Water Quality
1617 Mall Service Center
Raleigh, North Carolina 27699-1617
Note
The submission of this document does not guarantee the Issuance of an NPDES permit.
For questions, please contact the DWQ Regional Office for your area.
DWQ Regional Office Contact Information:
Asheville Office ......
[phone]
Fayetteville Office
... [phone]
Mooresville Office
... [phone]
Raleigh Office ........
[phone]
Washington Office
...[phone]
Wilmington Office
... [phone]
Winston-Salem ......
[phone]
Central Office .........(919)
807-6300
Page 9 of 9
SWU-NCG02-NOI Last revised 6/7/2010

916E
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NC0000361
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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 wastewater and stormwater from a facility located at the
Schoolhouse Quartz Operation
off US Highway 19E
Avery County
to receiving waters designated as the North Toe River in the French Broad River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth
in Parts I, II, III, and IV hereof.
The permit shall become effective November 1, 2006.
This permit and the authorization to discharge shall expire at midnight on February 28, 2011.
Signed this day September 26, 2006.
Alan W. Klimek, Jr., P.E., Director
Division of Water Quality
By Authority of the
Environmental Management Commission

NC0000361
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge
are hereby revoked, and as of this issuance, any previously issued permit bearing this
number is no longer effective. Therefore, the exclusive authority to operate and
discharge from this facility arises under the permit conditions, requirements, terms, and
provisions included herein.
Unimin Corporation
Schoolhouse Quartz Operation Wastewater Treatment Plant
is hereby authorized to:
1. Continue operation of a wastewater treatment plant for process wastewater from
mineral extraction consisting of:
• Non -fluoride waste sump with 3 influent slurry pumps;
• 80 foot diameter thickener
• Overflow tanks;
• Disk filter;
• Fluoride -bearing waste sump with 2 pumps;
• 60 foot diameter thickener;
• Five dewatering cyclones;
• Pan Filter;
• Recycle pump;
• Two 220 gallon flash mix units;
• Two 1280 gallon flocculation units,
• Two 2500 square foot lamellar flow plate separators;
• Lime, alum, and polymer addition;
• Mixing/reactor tanks;
• Multimedia filters;
• Filter press;
• Emergency pond,
• Recycle system; and
• All associated piping, equipment, and controls
The facility is located at the Schoolhouse Quartz Operation wastewater treatment
plant, off Highway 19 East, near Spruce Pine, Avery County, and;
2. Discharge treated wastewater through outfall 001, mine dewatering effluent from
outfall 002 and stormwater from outfalls 101-116, from said treatment works at
the location specified on the attached map into the North Toe River, which is
classified C Trout waters, in the French Broad River Basin.

NC0000361
PART I. SECTION A.
A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS -FINAL
During the period beginning on the effective date of the permit and lasting until
expiration, the Permittee is authorized to discharge process wastewater from mineral
extraction of ore from outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
Effluent
Characteristics
EFFLUENT
LIMITATIONS
Monitoring Requirements
Monthl
Aver
Dail
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow
2.16 MGD
Continuous
Recording
I or E
Total Fluoride
109.0 lb/day
218.0 lb/day
Daily
Composite
E, U, D
Total Suspended
Solids
450.0 lb/day
721.0 lb/day
Daily
Composite
E, U, D
Settleable Solids
Daily
Grab
E
Turbidityz
Daily
Grab
E, U, D
pHs
Daily
Grab
E, U, D
Oil and Grease
Quarterly
Grab
E
Chloride4
Quarterly
Composite
E
Chronic Toxicitys
Quarterly
Composite
E
Notes:
1. Sample locations: E- Effluent, I- Influent, U - Kaolin Pumphouse, D - Franklintown
bridge. Instream samples shall be grab samples and shall be conducted 3/week.
2. This discharge shall not cause the turbidity of the receiving waters to exceed 10 NTU.
If the turbidity exceeds 10 NTU due to natural conditions, the discharge shall not
cause any increase in turbidity.
3. The pH shall not be less than 6.0 standard units nor greater than 10.0 standard units.
4. Chloride shall be monitored quarterly during the same months as toxicity testing.
5. Chronic Toxicity (Ceriodaphnia) Pass/Fail at 10%: February, May, August and
November. See Special Condition A (2).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NC0000361
. A. (2). CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or
significant mortality to Ceriodaphnia dubia at an effluent concentration of 10.0%.
The permit holder shall perform at a minimum, uarterl2 monitoring using test
procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay
Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II
Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent
versions. The tests will be performed during the months of February, May, August and
November. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a
failure or ChV below the permit limit, then multiple -concentration testing shall be
performed at a minimum, in each of the two following months as described in "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February
1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the
geometric mean of the highest concentration having no detectable impairment of
reproduction or survival and the lowest concentration that does have a detectable
impairment of reproduction or survival. The definition of "detectable impairment,"
collection methods, exposure regimes, and further statistical methods are specified in the
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1) for the months in which tests were
performed, using the parameter code TGP3B for the pass/fail results and THP3B for the
Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following
address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences
Section no later than 30 days after the end of the reporting period for which the report is
made.

NC0000361
Test data shall be complete, accurate, include all supporting chemical/ physical
measurements and all concentration/response data, and be certified by laboratory
supervisor and ORC or approved designate signature. Total residual chlorine of the
effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity
monitoring is required, the permittee will complete the information located at the top of
the aquatic toxicity (AT) test form indicating the facility name, permit number, pipe
number, county, and the month/ year of the report with the notation of "No Flow" in the
comment area of the form. The report shall be submitted to the Environmental Sciences
Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is
required, monitoring will be required during the following month.
Should any test data from this monitoring requirement or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring
requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as
minimum control organism survival, minimum control organism reproduction, and
appropriate environmental controls, shall constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
Should any test data from this monitoring requirement or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring
requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as
minimum control organism survival, minimum control organism reproduction, and
appropriate environmental controls, shall constitute an invalid test and will require
immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.

NC0000361
A. (3). BIOCIDE CONDITION
The permittee shall obtain authorization from the Division of Water Quality prior to
utilizing any new biocide in cooling water to be discharged. The permittee shall notify
the Director in writing, not later than ninety (90) days prior to instituting use of any
additional biocide used in cooling systems, which may be toxic to aquatic life other than
those previously reported to the Division of Water Quality. Such notification shall
include completion of Biocide Worksheet Form 101 and a map locating the discharge
point and receiving stream. No chromium, zinc, or copper shall be added to the
treatment system except as pre -approved additives to biocidal compounds.
A. (4). WASTEWATER DIVERSION
Diversion or bypassing of untreated wastewater from the treatment facility is prohibited.
A. (5). SOLIDS DISPOSAL
Solids removed or resulting from the wastewater treatment process shall be contained
and disposed of in such a manner as to prevent any contamination of the surface waters
of the State.
A. (6). FLUORIDE REOPENER
This permit shall be modified, or revoked and reissued to incorporate new fluoride
effluent limitations in the event that acute or chronic bioassay testing or other studies
results in a change in the North Carolina Water Quality Standard for fluoride.
A. (7). TURBIDITY
In the event that violations of the turbidity standard of the North Carolina Water Quality
Standards occur as a result of this discharge, this permit shall be modified, or alternately,
revoked and reissued to incorporate limitations sufficient to protect the receiving waters.
A. (8). PERMIT MODIFICATIONS
This permit shall be modified, or revoked and reissued to incorporate new limitations in
the event that production changes are requested or should any new fluoride using
discharge request to locate on the North Toe River.

NC0000361
STORMWATER MONITORING, CONTROLS AND LIMITATIONS FOR PERMITTED
DISCHARGES
SECTION B. STORMWATER BEST MANAGEMENT PRACTICES (BMPS) PLAN
1. The permittee shall implement stormwater BMPs to ensure that contaminants do not enter
surface waters via stormwater that comes in contact with any unstabilized overburden, raw
materials, intermediate products, finished products, byproducts or waste products located
on the site covered by this permit. A BMP Plan shall be developed in accordance with the
requirements of this section. The BMP Plan requirement, or portions of the plan
requirement, may be met by utilizing appropriate requirements in other documented plans
specific to the permitted facility.
2. Management of Stormwater Runoff and Runon. The permittee shall maintain stormwater
BMPs for land disturbance areas and outside process areas. In addition, controls should be
used to limit or isolate selected land disturbance and process areas and limit the amount of
off site stormwater runon to those areas. Appropriate Best Management Practices (BMPs)
should be used to divert, infiltrate, reuse or otherwise manage stormwater runoff and runon
in a manner that reduces pollutants in stormwater discharges leaving the site. Appropriate
BMPs may include but are not limited to: vegetative swales, berms, use of reclaimed mine
areas, and reuse of collected stormwater (such as for an industrial process or as an irrigation
source).
3. BMP Controls Inspection and Maintenance. All stormwater BMPs shall be inspected by or
under the direction of the permittee at least once every seven calendar days and within 24
hours after any storm event that results in a discharge. The BMPs implemented shall be
operated and maintained so that they are cleaned out when the sediment storage capacity
has been reduced by 50%. If any visible sedimentation is leaving the property, corrective
action shall be taken to reduce the discharge of sediments. Visible sedimentation found
offsite shall be recorded with a brief explanation as to the measures taken to prevent future
releases as well as any measures taken to remove the sediment that left the site. All other
stormwater specific controls (e.g. oil /water separators) shall be inspected and qualitatively
monitored on a semiannual schedule, once in the fall (September -November) and once
during the spring (April-june). A log of sampling data and of activities taken to implement
BMPs associated with the vehicle maintenance activities shall be maintained and
incorporated into the BMP Plan and kept onsite for the duration of the permit term and
made available to the Director upon request.
4. Erosion and Sedimentation Control. The permittee shall implement the management
practices and the erosion and sedimentation control measures that are included in the
mining permit or erosion and sedimentation control permit issued by the Division of Land

NC0000361
Resources. Compliance with the issued permit is considered a requirement of this permit.
Any deviation from the issued permit, or amendments to the issued permit, that impacts
water quality shall constitute a violation of the terms and conditions of this permit. A signed
copy of the issued permit including the approved erosion and sedimentation control
measures and the reclamation plan shall be maintained on the site at all times. Once an area
is released by the Division of Land Resources in accordance with NCGS Chapter 74, Article
7, it shall no longer be subject to this permit.
5. Preventive Maintenance Inspections and Good Housekeeping Practices. Equipment
utilized during mining activity on a site must be operated and maintained in such a manner
as to prevent potential or actual pollution of the surface water or ground waters of the state.
Fuels, lubricants, coolants, and hydraulic fluids, or any other petroleum products, shall not
be discharged on the ground or into surface waters. Spent fluids shall be disposed of in a
manner so as not to enter the surface waters or ground waters of the state and in accordance
with applicable federal disposal regulations. Any spilled fluids shall be cleaned up to the
maximum extent practicable and disposed of in a manner that does not allow their entry into
the surface waters or ground waters of the state.
6. Secondary Containment. The permittee shall provide secondary containment for bulk
storage of liquid materials, storage of Section 313 of Title III of the Superfund Amendments
and Reauthorization Act (SARA) water priority chemicals, or storage of hazardous liquids
substances to prevent leaks and spills from contaminating stormwater runoff. If the
secondary containment devices are connected directly to stormwater conveyance systems,
the connection shall be controlled by manually activated valves or other similar devices
(which shall be secured with a locking mechanism) and any stormwater that accumulates in
the containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be uncontaminated by
the material stored within the containment area.
SECTION C: ANALYTICAL AND QUALITATIVE MONITORING REQUIREMENTS
FOR DISCHARGES COMPOSED ENTIRELY OF STORMWATER
Analytical monitoring for stormwater discharges shall be performed for parameters as
specified in Tables 1 through 3. All analytical monitoring shall be performed during a
representative storm event as defined in Section E. Definitions.
In situations where stormwater runoff is controlled by some type basin or
retention/detention pond, the following provisions are applicable for sample collection for
analytical monitoring:
ooAnalytical monitoring for stormwater discharges from a basin or other similar control

NC0000361
structures must be performed within the first 30 minutes of discharge.
• Analytical monitoring for a basin /pond designed to contain the 10-year design storm (see
Section E. Definitions) without discharging is not required. Qualitative monitoring for color,
foam, outfall staining, visible sheen and dry weather flow is the only monitoring
requirement.
• Analytical and qualitative monitoring are not required for a basin/pond designed to
contain the 25-year, 24-hour storm (see Section E. Definitions) without discharging. A basin/
pond meeting this provision is considered a non -discharging stormwater control.
1. Analytical Monitoring for Stormwater Discharges from Land Disturbance and Process
Areas.
Analytical monitoring for stormwater discharges from land disturbance and process areas
shall be performed as specified in Table 1.
Table 1. Analytical Monitoring Requirements for Stormwater Discharges from Land
Disturbing Activities and Process Areas
Discharge
Characteristics
Units
Measurement
Fre uencvl
Sample
Tye2
Sample
Location
Settleable Solids
ml.i
Aunw&y
Grab
SDO
Total Suspended Solids
mg11
Annually
Grab
SDO
Turbidity
N7r
Amivally
Grab
SDO
Total Rain&114
inches
Anntmh
--
--
Event Duration4
minutes
Aiuumfly
--
--
Total F1ox;4
MG
Annually
--
SDO
Footnotes:
1 Measurement Frequency: Once per year during a representative storm event. A year is defined as the 12
month period beginning on the month and day of issuance of the permit.
2 The sample is collected within the first 30 minutes of discharge from the outfall.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless
representative outfall status has been granted.
4 For each sampled representative storm event, the total precipitation, storm duration, and total flow must
be monitored. Total flow shall be either; (a) measured continuously, (b) calculated based on the amount of
area draining to the outfall, the amount of built -upon (impervious) area, and the total amount of rainfall,
or (c) estimated by the measurement of flow at 20 minute intervals during the rainfall event.

NC0000361
2. Qualitative Monitoring for Stormwater Discharges from Land Disturbance Areas,
Process Areas and Vehicle Maintenance Areas.
Qualitative monitoring requires a visual inspection of all stormwater outfalls with
stormwater runoff from land disturbance, process or vehicle maintenance areas
regardless of representative outfall status or cut-off concentrations and shall be
performed as specified below in Table 2. No analytical tests are required.
The first qualitative monitoring event during the term of the permit must coincide with
the initial analytical monitoring event (regardless of the season). All other qualitative
monitoring will be performed twice per year, once in the spring (April - June) and once
in the fall (September - November) and does not need to be performed during a
representative storm event.
Table 2. Qualitative Monitoring Requirements
Discharge Characteristics
Frequency
I-Ionitoring
Locationl
Color
Sena-Amival
SDO
Odor
S enni-Amlml
SDO
Clarity
J
Semi-Amival
SDO
F'loatinsz Solids
Sena -Annual
SDO
Suspended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Sena -Annual
SDO
Deposition at or immediately below theSenu-Aiumal
outfall
SDO
Erosion at or immediately below the
outfall
Semi -Annual
SDO
Other obvious indicators
of stormwater pollution
Senu-Annual
SDO
Footnotes:
1 Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall
(SDO) associated with land disturbance areas, process areas and vehicle maintenance areas regardless of
representative outfall status.

NC0000361
SECTION C: EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
FOR MINE DEWATERING WASTEWATER AND PROCESS
WASTEWATER
1. Mine Dewatering Wastewater (including Borrow Pits)
During the period beginning on the effective date of the permit and lasting until
expiration, the permittee is authorized to discharge mine dewatering wastewater
controlled in accordance with the conditions of this permit. Mine dewatering activities
that have the potential to drain wetlands must have secured and implemented an
Operation and Monitoring Plan approved by the Division. Operation and Monitoring
Plans shall include, but are not limited to:
■ Groundwater monitoring strategies to demonstrate the effect of pumping and, as
necessary, establish the pumping regime necessary to reduce impacts.
■ Detailed plans to maintain the surrounding hydrology and the respective
monitoring to demonstrate compliance.
Alternative site specific pumping and monitoring regimes may be approved by the
Division on a case -by -case basis.
The discharge of Mine dewatering wastewater that is directly pumped from the pit
through an erosion and sedimentation control structure prior to discharging to surface
waters is not required to receive an authorization to construct. Mine dewatering
wastewater discharges, which require additional treatment other than erosion and
sedimentation control structures, are subject to the authorization to construct
requirement.
Analytical monitoring of mine dewatering wastewater shall be performed as specified
below in Table 3. An exceedence of any of these limitations is a violation of the permit
conditions and may be subject to enforcement action.

NC0000361
Table 3. Effluent Limitations and Monitoring Requirements for Mine Dewatering
Wastewater
Mine dewatering and/or overflow from facilities that recycle process wastewater shall be
limited and monitored by the permittee as specified below:
Discharge
Characteristics
Effluent Limitations
Monitoring Requirements
Monthly
Average
Daily
Maximum
Measurement
Sample
Type
Sample
Location'
Frequency
Total Flowz
E
Settleable Solids
0.1 ml/L
0.2 ml/L
Monthly
Grab
E
Turbidity3
10 NTU
Monthly
Grab
E
Total Suspended
Solids4
Monthly
Grab
E
pH5
Monthly
Grab
E
Footnotes:
1. Sample locations: E- Effluent
2. Total flow shall be continuous flow measurement. Alternatively, pump curves and pump logs may
be used as a means to calculate flow volume.
3. Turbidity monthly average limitations: Trout waters 10 NTUs
4. Total Suspended Solids for Industrial Sand Mining shall be limited to a monthly average of 25 mg/l
and a daily maximum of 45mg/l.
5. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units in freshwaters.
2. BMP Conditions
a) The permittee shall utilize best management practices to ensure that contaminants
do not enter the surface waters as a result of blasting at the site.
b). The permittee shall obtain authorization from the Division of Water Quality prior
to utilizing any chemical additive for purposes of flocculation.
3. Residual Management
The residuals generated from treatment facilities used to meet the effluent limitations must
be disposed of in accordance with applicable standards and in a manner such as to prevent
any pollutants from such materials from entering waters of the state or navigable waters of
the United States.

NC0000361
There shall be no discharge of floating solids or visible foam in other than trace
amounts.
SECTION D: SCHEDULE OF COMPLIANCE
1. The permittee shall comply with Final Limitations and Controls specified for stormwater
discharges in accordance with the following schedule:
For the land disturbance activities:
a. Implement BMP's and stormwater controls, as appropriate on the effective date of
permit coverage, at existing operations.
b. Develop and implement BMP's and stormwater controls, as appropriate, prior to
beginning land disturbance activity at new operations.
2. Permittee shall at all times provide the operation and maintenance necessary to operate
the permitted stormwater controls at optimum efficiency.
SECTION E: DEFINITIONS
1. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at
least 72 hours in which no storm event measuring greater than 0.1 inches has occurred.
A single storm event may contain up to 10 consecutive hours of no precipitation. For
example, if it rains for 2 hours without producing any collectable discharge, and then
stops, a sample may be collected if a rain producing a discharge begins again within the
next 10 hours.
2. Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the
average once in ten years. Design storm information can be found in the State of North
Carolina Erosion and Sediment Control Planning and Design Manual.
3. 25-year, 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the
average, once in 25 years.

Affimin
-; ,; Environmental Attains
Unimin Corporation
136 Crystal Drive • Spruce Pine, NC 28777
(PHONE) 828/766-6081 * (FAQ 828/7654755
August 19, 2011
Mr. Bryan Lowther
Stormwater and General Permits Unit
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject Unimin Corporation — Schoolhouse Quartz Facility
Mr. Lowther,
Per your email request today, please find enclosed revised NOI form page 2 of 9 for
Ummin's Schoolhouse Quartz Facility. If you have any questions regarding this matter or
require further information, please do not hesitate to contact me at [phone] ext. 13.
Sincerely,
JeYeyy sonP.E.
Ferguson,
Environmental Engineer
UNIMIN CORPORATION
Enclosure
c: EA Files, Scott Former, Mk Vencill
AUG 2 3 2011
WETUWDSMO $ipgt,}WA

Linvdle Falls Q�adranyle
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M,nv4e Se r,'es (-Icr oc ca hx)

DEPARTMENT OF ENVIRONMENT
AND NATURAL RESOURCES
DIVISION OF LAND RESOURCES
LAND QUALITY SECTION
PERMIT
for the operation of a mining activity
In accordance with the provisions of G.S. 74-46 through 68, "The Mining
Act of 1971," Mining Permit Rule 15A NCAC 5 B, and other applicable
laws, rules and regulations
Permission is hereby granted to:
Unimin Corporation
Brushy Creek Mine
Avery County - Permit No. 06-03
for the operation of a
Feldspar, Quartz and Mica Mine
which shall provide that the usefulness, productivity and scenic values of
all lands and waters affected by this mining operation will receive the
greatest practical degree of protection and restoration.
MINING PERMIT EXPIRATION DATE: March 15, 2014

A Iva .1
Page 2
In accordance with the application for this mining permit, which is hereby approved by the
Department of Environment and Natural Resources hereinafter referred to as the Department,
and in conformity with the approved Reclamation Plan attached to and incorporated as part of
this permit, provisions must be made for the protection of the surrounding environment and for
reclamation of the land and water affected by the permitted mining operation. This permit is
expressly conditioned upon compliance with all the requirements of the approved Reclamation
Plan. However, completed performance of the approved Reclamation Plan is a separable
obligation, secured by the bond or other security on file with the Department, and may survive
the expiration, revocation or suspension of this permit.
This permit is not transferable by the permittee with the following exception: If another
operator succeeds to the interest of the permittee in the permitted mining operation, by virtue
of a sale, lease, assignment or otherwise, the Department may release the permittee from the
duties imposed upon him by the conditions of his permit and by the Mining Act with reference
to the permitted operation, and transfer the permit to the successor operator, provided that
both operators have complied with the requirements of the Mining Act and that the successor
operator agrees to assume the duties of the permittee with reference to reclamation of the
affected land and posts a suitable bond or other security.
In the event that the Department determines that the permittee or permittee's successor is not
complying with the Reclamation Plan or other terms and conditions of this permit, or is failing
to achieve the purposes and requirements of the Mining Act, the Department may give the
operator written notice of its intent to modify, revoke or suspend the permit, or its intent to
modify the Reclamation Plan as incorporated in the permit. The operator shall have right to a
hearing at a designated time and place on any proposed modification, revocation or
suspension by the Department. Alternatively and in addition to the above, the Department
may institute other enforcement procedures authorized by law.
nP.finitinns
Wherever used or referred to in this permit, unless the context clearly indicates otherwise,
terms shall have the same meaning as supplied by the Mining Act, N.C.G.S. 74-49.
Modifications
June 30, 1986: This permit has been transferred in its entirety from Harris Mining Company to
Unimin Corporation.
March 1. 1990: This permit has been modified to include a revised reclamation plan and new
mine area located below structure SC-1A.
June 29, 1990: This permit has been modified to include the revised reclamation plan, new
mining area for high quality clay (McAmy Homeplace) and an extension of the Vilest
Schoolhouse Area.

Page 3
November 12, 1993: This permit has been modified to include the remaining land owned by
Unimin Corporation as additional buffer land. The modification increases the permitted area to
4,225 acres as indicated on the Brushy Creek Mine Map and supplemental information
received by the Land Quality Section on September 23, 1993.
March 18. 1999: This permit has been modified to upgrade an existing haul road and to
expand the Mill Ridge area to 51 acres to be affected as indicated on the mine map dated
August 27, 1998.
June 1, 1999: This permit has been modified to extend the permit boundary to include
siltation structure MR3 as indicated on the 11 inch by 14 inch mine map received May 24,
1999.
September 29, 2000: This permit has been modified to allow the construction of a new "Core
Storage Building" located at the Schoolhouse Quartz Plant Site, including installation and
maintenance of its associated erosion and sedimentation control devices, as indicated on the
11 x 17 inch mine map section last revised August 18, 2000.
February 26, 2002: This permit has been modified to reduce the permitted acreage to 4,197
acres and increases the affected acreage to 277.17 acres as indicated on the Reclamation
Map-2 last revised January 4, 2002 and the Property Map dated December 12, 2001. The
modification allows the expansion of the McAmy waste area to the north and south, the
expansion of the Mill Ridge waste area to the east, and the expansion of the Schoolhouse
Mine to the west, including the installation and maintenance of the associated erosion and
sediment control measures for these expansion areas. This modification also releases the 28
acre area for the Avery County Airstrip from the permitted area as per your request.
June 16, 2004: This permit has been modified to increase the permitted acreage to 4,203
acres and the. affected acreage at this site to 283.17 acres as indicated on the mine maps
dated November 12, 2003 and supplemental information dated November 13, 2003 and April
5, 2004. The modification includes the addition of six acres for the expansion of the waste
area to the east to fill up to the current airport runway elevation, installation of a rock buttress
along the toe of the waste disposal area and the construction and maintenance of all
associated erosion and sediment control measures associated with the waste area expansion.
June 1, 2005: This permit has been modified to extend the elevation of the ultimate crest
height for the tailings disposal area adjacent to the airport. The elevation would be increased
from 2,710 feet to a total of 2,780 feet, as indicated on the maps and details (Sheets 2 through
4) last revised April 14, 2005 and supplemental information submitted by Pinnacle Engineering
dated March 3, 2004 and April 21, 2005.
August 4, 2005: This permit has been departmentally modified to revise Operating Condition
No. 4J to state that a qualified professional Geotechnical Engineer familiar with the project and
construction plans shall be present during the construction of the rock buttress.

`% UA r_1
Page 4
June 2. 2008: This permit has been modified to increase the affected acreage at the Brushy
Creek Mine site to 283.67 as indicated on the Central Product Warehouse General Site
Layout Map last revised April 21, 2008. The modification includes the expansion of the
Central Product Warehouse and includes the installation and maintenance of the associated
erosion and sediment control measures.
June 17, 2010: This permit has been modified to reduce the rock toe stability berm from 40
feet to 25 feet because of soil test borings, laboratory tests and stability analysis and eliminate
the rock toe berm along the north (section B-B) because of the presence of residual
foundation soils and a reduction of the tailings disposal height from 125 to 100 feet as
indicated on the Unimin Tailings Disposal Grading Plan with Rock Buttress (Sheet 2 Of 4) last
revised September 1, 2009. The permitted and affected acreage at this site remains
unchanged.
Expiration Date
This permit shall be effective from the date of its issuance until March 15, 2014.
Conditions
This Permit shall be subject to the provisions of the Mining Act, N.C.G.S., 74-46, et. seq., and
to the following conditions and limitations:
OPERATING CONDITIONS:
1. Wastewater and Quarry ewatering
A. Any wastewater processing or mine dewatering shall be in accordance with the
permitting requirements and rules promulgated by the N.C. Environmental
Management Commission.
B. Any storm water runoff from the affected areas at the site shall be in accordance
with any applicable permit requirements and regulations promulgated by the
Environmental Protection Agency and enforced by the N.C. Environmental
Management Commission. It shall be the permittee's responsibility to contact
the Water Quality Section, Division of Water Quality, to secure any necessary
storm water permits or other approval documents.
2. Air Quality and Dust Control
A. Any mining related process producing air contaminant emissions including
fugitive dust shall be subject to the requirements and rules promulgated by the
N.C. Environmental Management Commission and enforced by the Division of
Air Quality.
B. During processing operation, water trucks or other means that may be necessary
shall be utilized to prevent dust from leaving the permitted area.

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Page 6
F. All mining activities, including the installation and maintenance of all erosion and
sedimentation control measures, shall be conducted as indicated on Map 2 last
revised August 7, 2003 and Map 3 last revised January 2004.
G. All mining activities associated with the expansion of the waste area, including
the construction and maintenance of all associated erosion and sediment control
measures, shall be conducted as indicated on the mine maps last revised April
141 2005 and supplemental information submitted by Pinnacle Engineering dated
March 3, 2004 and April 21, 2005.
H. Additional erosion and sediment control measures and/or devices shall be
utilized as necessary during the construction phase and throughout the lifetime
of the six acre expansion of the waste area to prevent sediment from entering
natural watercourses or other properties.
I. The additional disposal of tailings at the site to increase the height/elevation of
the tailings disposal area must be constructed per the maps and details last
revised on April 14, 2005 and supplemental information submitted by Pinnacle
Engineering dated March 3, 2004, and April 21, 2005. The additional tailings
disposed of in this area must be constructed in lifts to insure geotechnical
stability.
J. During the construction and installation of the rock buttress, adjacent to the
North Toe River, a qualified professional Geotechnical Engineer who is familiar
with the project and construction plans shall be present during all phases of said
buttress construction. The construction and installation of the rock buttress shall
be in accordance with the approved plans and details outlined on the Sheets 2
through 4 last revised April 14, 2005.
K. Mining related activities associated with expansion of the Central Product
Warehouse shall be conducted as indicated on the Central Product Warehouse
General Site Layout Map last revised April 21, 2008 and the supplemental
information received by the Land Quality Section on April 23, 2008.
L. Mining related activities associated with the reduction of the rock toe stability
berm from 40 feet to 25 feet, elimination of the rock toe stability berm along the
northern tailings disposal area (Section B-B), and reduction of the tailings
disposal height in this area from 125 to 100 feet shall be conducted as indicated
on the Unimin Tailings Disposal Grading Plan with Rock Buttress (Sheet 2 of 4)
last revised September 1, 2009, the Unimin Schoolhouse Mine Phase II Tailing
Disposal Plan dated September 4, 2009 and supplemental information received
by the Land Quality Section on May 12, 2010, with the following stipulations:
1. The horizontal rock toe stability berm width of 55 feet or more shall be
maintained;

Page 7
2. Controlled compaction of the outer 300 feet zone and proper surface water
drainage shall continue in order to maintain the structural integrity of the
tailings disposal area;
3. Interim benches along the outer slope and along the tailings disposal area
crest shall be constructed and maintained in order to maintain the structural
integrity of the tailings disposal area; and
4. The soft tailings material in the ponded area near the rock toe stability berm
on the south side of the existing tailings disposal shall be removed and
replaced with competent material.
M. An erosion and sediment control plan(s) shall be submitted to the Department for
approval prior to any land disturbing activities not indicated on the revised
erosion control plan or mine maps submitted with the approved application for a
mining permit and any approved revisions to it. ' Such areas include, but are not
limited to, expansion outside of the approved pit area, creek crossings, or
expansion of overburden or waste disposal areas.
5. Groundwater Protection
Groundwater monitoring wells shall be installed and monitored as deemed appropriate
by the Department.
6. Graded Slopes and Fills
A. The angle for graded slopes and fills shall be no greater than the angle which
can be retained by vegetative cover or other adequate erosion control measure,
structure, or device. In any event, exposed slopes or any excavated channels,
the erosion of which may cause off -site damage because of siltation, shall be
planted or otherwise provided with groundcover, devices or structures sufficient
to restrain such erosion.
B. Overburden cut slopes along the perimeter of any pit expansion conducted after
November 12, 1993, shall be graded to a minimum 2 horizontal to 1 vertical or
flatter and shall be stabilized within 60 days of completion. Furthermore, a
minimum ten (10) foot wide horizontal safety bench shall be provided at the top
of the rock and at the toe of any overburden slope constructed after November
12, 1993.
7. Surface Drainage
The affected land shall be graded so as to prevent collection of pools of water that are,
or likely to become, noxious or foul. Necessary structures such as drainage ditches or
conduits shall be constructed or installed when required to prevent such conditions.

"y 46
Page 8
8. Blasting
The operator shall monitor each blast with a seismograph located at a distance
no farther than the closest off site regularly occupied structure not owned or
leased by the operator. A seismographic record including peak particle velocity, air
overpressure, and vibration frequency levels shall be kept for each blast (except as
provided under Operating Condition Nos. 8B and 8D of this permit). The following
blasting conditions shall be observed by the mine operator to prevent hazard to persons
and adjacent property from surface blasting:
A. Ground Vibration With Monitoring:
In all blasting operations, the maximum peak particle velocity of any component
of ground motion shall not exceed Figure 1 (below) at the immediate location of
any regularly occupied building outside of the permitted area such as a dwelling
house, church, school, or public, commercial or institutional building.
2 iR'7f,cCC
i
O.7S inrsrc
i
1
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T s 10' 20 30 lO
6iast Vibration Frequency. Hz
10.0
o_a
Pirate ; Alt--rnatilw-n biastinc; 'vef cr:t•-rTa
i 5,3,lrce r77of�itjP�: Anom fr-7Ur# S- 1. Eureau of ,L1ir,es r?7 850
B. Ground Vibration Without Monitoring.
In the event of seismograph malfunction or other condition, which prevents
monitoring, blasting shall be conducted in accordance with the following
formulas:
W = (D/Ds)2 Ds = D W1r2
V = 160(D5)"1.6
W = Maximum charge weight of explosives per delay period of 8.0 milliseconds
or more (pounds).

Page 9
D = Distance from the blast site to the nearest inhabited building not owned or
leased by the mine operator (feet).
Dr, = Scaled distance factor.
V = Peak Particle Velocity (inches per second).
The peak particle velocity of any component shall not exceed 1.0 inch per
second, for the purposes of this Section.
C. Air blast With Monitoring:
Air blast overpressure resulting from surface blasting shall not exceed 129
decibels linear (dBL) as measured at the immediate location of any regularly
occupied building not owned or leased by the operator outside of the permitted
area such as a dwelling house, church, school, or public, commercial or
institutional building, unless an alternate level based on the sensitivity of the
seismograph microphone as .specified below is being used:
Lower Frequency Limit of Max Level,
Measuring System. in Hz in dBL
0.1 Hz or lower -flat response
134 peak
2.0 Hz or lower -flat response
133 peak
6.0 Hz or lower -flat response
129 peak
D. Air blast Without Monitoring:
In the event of seismograph malfunction or other condition, which prevents
monitoring, blasting shall be conducted in accordance with the following
formulas:
To convert U (psi) to P (dBL):
U = 82 (D/W0.33)-1.2
P = 20 x log (U/2.9xl0-9)
Confined Air blast/Overpressure (dBL)
for quarry situation:
A=P-35
U Unconfined air overpressure (pounds per square inch).
W Maximum charge weight of explosives per delay period of 8.0 milliseconds
or more (pounds).
D = Distance from the blast site to the nearest inhabited building not owned or
leased by the mine operator (feet).
P = Unconfined air overpressure (decibels).
A = Air blast or air overpressure for typical quarry situations (decibels).

Page 10
The air blast/overpressure shall not exceed 129 decibels, for the purposes of this
Section.
E. Record Keeping:
The operator shall maintain records on each individual blast describing: the total
number of holes; pattern of holes and delay of intervals; depth and size of holes;
type and total pounds of explosives; maximum pounds per delay interval; amount
of stemming and burden for each hole; blast location; distance from blast to
closest offsite regularly occupied structure; and weather conditions at the time of
the blast. Records shall be maintained at the permittee's mine office and copies
shall be provided to the Department upon request.
F. Excessive Ground Vibration/Air blast Reporting:
If ground vibration or Air blast limits are exceeded, the operator will immediately
report the event with causes and corrective actions to the Department. Use of
explosives at the blast site that produced the excessive reading shall cease until
corrective actions approved by the Department are taken. However, blasting
may occur in other approved areas within the permitted boundary. Authorization
to blast at the blast site may be granted at the time of the verbal reporting of the
high ground vibration or high air blast reading if the circumstances justify verbal
approval. Failure to report will constitute a permit violation.
G. Flvrock Prevention:
The operator shall take all reasonable precautions to ensure that flyrock is not
thrown beyond areas where the access is temporarily or permanently guarded by
the operator. Failure to take corrective measures to prevent flyrock and
repeated instances of flyrock shall be considered a violation of the Mining Permit.
H. Flvrock Reporting:
Should flyrock occur beyond the permitted and guarded areas, the operator shall
immediately report the incident to the Department. Further use of explosives on
the mine site shall be suspended until the following actions have been taken:
1. A thorough investigation as to the cause(s) of the incident shall be
conducted.
2. A report detailing the investigation shall be provided to the Department
within 10 days of the incident. The report shall, at a minimum, document
the cause(s) of the incident along with technical and management actions
that will be taken to prevent further incidents. The report shall meet with
the approval of the Department before blasting may resume at the mine
site.

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of aoiad }uaw:pedaQ ayl woal peulelgo aq Isnw sabueyo yons jueweldwi 01 Ienoaddy '}i
01 suoisinaa panoadde Aue pue Iiwaad buiuiw a aol uoileoildde panoadde ayj ul pauie}uoo
ueld loaluoo luawlpas/uoisoaa jo `uoijewepei `6uiuiw ayj loped Aue abueyo asinnaaylo
ao �(}ipow `a}asap of aaisap ayj jo bullum ui juew:pedaa ay} fi4pu lleys aoleaado ayl
uoijeou polN veld ' I. I.
•buiaamnq asiou pue lensin anoidwi
o} juawpedaa ayl Aq ejapdoidde paweap se palueld aq Ileys saioads uaaa6aana
elgeldeooe aayjo ao squid eiuibain ao/pue teal 6uol `sasseib of u011ippe ul '8
'juaw:pedaa ay} AcI alepdoidde
pawaap se paAoldwe aq Ileys `swaaq uay�ea builonalsuoo se yons `spoylaw
buluaaaos leuoillppy 'oilgnd ayj woal uoileaado ayj uaaaos of saaelybnoaoyl
oilgnd pue euiw ayj uaannlaq paulejuiew aq lleys u01jeja69n builsix3 'd
uiumos lensin '01,
T66-1, `Z I- aagwanoN
aap paysilgelse suoisuedxe Iid Aue jo aajawped ayj buole edols Ino uepangaano Aue
10 901 aye pue moos Jo dol ayj uaanngaq uoijounf ay} le papinoid eq lleys youeq Ajejes
leluozlaoy apron loot 01, wnwiuiw a `uoiVppe ul 'ssaooe oilgnd lua:panpeui Juanaad
of llemg6iy Aue jo aajawped ayj 6uole sawn Ile le paulepew aq lleys buioual ao pua
-o}-pua peoeld saapinoq e6el `swaaq uay�ea pajeja6an ' O 6uilsisuoo aaiaaeq leoisAgd d
aaiaae9 IIeM LI!H -6
•paisonbaa si eoijou yoiynn JOI poiaad
e buianp }selq Aue of aoud eoigo Ieuoiba�1 uoi109S A4lleno pue-1 941 of aoi}ou
aouenpe inoy-t z an16 `}uew:pedaQ ayj Aq palsenbaa uaynn Ileys joleaado ayl
:ao N ' f
•wei6oid 6ui}selq uoilonpoid
ay} o}ui su01.1epuewwooaa ,saipnis ayj ajeaodaooui of poga elgeuoseai
AGana aNew lleys aojeaado ayl 'suollipuoo bullselq esayl Aq pannolle lanai
e 10 aouepaaoxe ue of esuodsaa ui alis auiw ayj le palonpuoo seipnis oiwsias
Aue jo sbuipuil ayj }o Adoo a juaw:pedaa 941 o1 apinoid lleys aojeaado ayl
:sap 'I

Page 12
12. Refuse Disposal
A. No on -site disposal of refuse or other solid waste that is generated outside of the
mining permit area shall be allowed within the boundaries of the mining permit
area unless authorization to conduct said disposal has first been obtained from
both the Division of Waste Management and the Land Quality Section,
Department of Environment and Natural Resources. The method of disposal
shall be consistent with the approved reclamation plan.
B. Mining refuse as defined by G.S. 74-49 (14) of The Mining Act of 1971
generated on -site and directly associated with the mining activity may be
disposed of in a designated refuse area. All other waste products must be
disposed of in a disposal facility approved by the Division of Waste
Management. No petroleum products, acids, solvents or their storage containers
or any other material that may be considered hazardous shall be disposed of
within the permitted area.
C. For the purposes of this permit, the Division of Land Resources considers the
following materials to be "mining refuse" (in addition to those specifically listed
under G.S. 74-49 (14) of the N.C. Mining Act of 1971):
1. on -site generated land clearing debris
2. conveyor belts
3. wire cables
4. v-belts
5. steel reinforced air hoses
6. drill steel
D. If mining refuse is to be permanently disposed within the mining permit
boundary, the following information must be provided to and approved by the
Division of Land Resources Prior to commencement of such disposal:
1. the approximate boundaries and size of the refuse disposal area;
2. a list of refuse items to be disposed;
3. verification that a minimum of 4 feet of cover will be provided over the
refuse;
4. verification that the refuse will be disposed at least 4 feet above the
seasonally high water table; and
5. verification that a permanent vegetative groundcover will be established
13. Annual Reclamation Report
An Annual Reclamation Report shall be submitted on a form supplied by the
Department by February 1 of each year until reclamation is completed and approved.

Page 13
14. Bonding
The security, which was posted pursuant to N.C.G.S. 74-54 in the form of a
$500,000.00 blanket bond, is sufficient to cover the operation as indicated in the
approved application. This security must remain in force for this permit to be valid. The
total affected land shall not exceed the bonded acreage.
15. Archaeological Resources
Authorized representatives of the Division of Archives and History shall be granted
access to the site to determine the presence of significant archaeological resources.

:smollol se eie asn aininj
pauueld ayj Jo} elgel!ns aoepns a of uoleaolsaa lua!peafi aoepns Jol suo!le34!oads ayl 'Z
-le!aalew pa}ep!losuooun
ui seaae AUe ajejafianaa pue apeafi pue `lleM yfi!y AUe Jo dol ayj fiuole (aouGI)
apeopieg }ueuewaad a ap!noad `aajeM gJIM ll!j 01 uo!}eneoxe /Cuenb ayj molle o} aq lleys
uo!leweloaa pauueld ayj `alnpayoS uo!jeweloa�l 941 o11oafgns pue `Jaypnl pap!noad '
:SNOIlI0N00 NOIIVINV-103U
-fiujuiw jo uo!leumial Jo uoljaldwoo jal}e saeeA o/vq u!yl!m palaldwoo aq Ileys
pue eaae j!waad aye 10 juawfias Aue uo fiuluiuw 10 uo!leu!waal ao uoilaldwoo aalle aw!l
elgeogoeid Isa!liee ay1 le uo!jeweloaa ap!noid `Juana AUe ul pue suoijeaado bululw y}!m
snoeuellnw!s uoljeweloaa aptnoid elq!seal lualxe 941 o1 lleys yoigm `veld ayj ui papnloui
elnpayos awll ayj ol, fiu!pi000e palonpuoo aq lleys s911!n110e asayl 'paleaodaoou!
ulaJay veld uo!leweloa�I aye o} }uensand sa!}!nljoe uo!jeweloaa 13npuoo lleys aaWwJad 'g
-aoimos jsaJo j eu!loaeO WON ayl pue u011e1S
�uaw!aadx3 Iean�ino!afiy eu!loae0 WON
Aq paysllge}se se sao!loeid uo11els9aoJ9a
pue o!wouoJfie papuawwooaa pue paldaooe of wiojuoo Ileys veld uo!lelafianaa ayl 'S
-Inol ao sno!po `sno!xou awooeq of AI9A!l aae ao
`aae ley, eaae pau!w ayj uo u!ewaa ao 1391loo o} pannolle eq lleys Jalem jo slood hews ON 'fir
-puel ayj 10
asn luenbesgns pasodoid ayj Jol elgel!ns si yolgm pue seo!joeid uoilemasuoo paldaooe
yl!m aouepa000e ul si yoigm uo!}eanbguoo a u! Hai aq lleys I!ods pue uepangaano IId 'E
*Moog u! su011eneoxa
Ile u1 pap!noid aq Isnw AJadoid fiu!u!ofpe of pue suosaad o} fgaJes a01 suo!s!noad 'Z
-puel ayj jo asn aJnlnj ayj yl!m luals!suoo
eq pue sap!ls jo Al!l!q!ssod ayl aziw!ulw of se albue ue yons is aq lleys slepajew
palep!losuooun Jayjo pue Ianeafi `pues `I!os u! suolJeneoxa Ile ui sadols leug ayl '
8 pap!noad sy spJepuelS wnw!u!W
:sap!noad ueld panoidde ayl
'I!waad fiu!u!w ayj jo swia} ayj puoAaq senu!luoo yolgm `99:4!waad ayj jo uo!lebilgo algeaedas
e si veld uolleweloa1:I ayl `Alleuo!l!ppy '1!uaJad fiu!u!l�I }eyl jo !p!Ien fiu!nu!luoo aye uo
uoi}!puoo a s! yolynn jo aouewaoped ayj `ueld uolleweloaU s!yl saleJodaooui l!wJed fiu!u!IN ayl
NVId NOIIVVYV-103IJ C13A0�lddV
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Page 15
A. All areas of unconsolidated material such as overburden or waste piles shall be
graded to a 2 horizontal to 1 vertical or flatter slope and terraced as necessary to
insure slope stability.
B. Any settling ponds and sediment control basins shall be backfilled, graded, and
stabilized or cleaned out and made into acceptable lake areas.
C. The processing, stockpile, and other disturbed areas neighboring the mine
excavation shall be leveled and smoothed.
D. Compacted surfaces shall be disced, subsoiled or otherwise prepared before
revegetation.
E. No contaminants shall be permanently disposed of at the mine site. On -site
disposal of waste shall be in accordance with Operating Conditions Nos. 12A
through 12D.
F. The affected land shall be graded to prevent the collection of noxious or foul
water.
3. Revegetation Plan:
Disturbed areas shall be permanently revegetated according to the Revegetation Plan
prepared by Mr. Chris Vance with the Soil Conservation Service on March 26, 1992 or
according to the seeding specifications listed below with the stipulations that rye grain
be used in lieu of rye grass and the Sparks and McArmy tracts be reforested.
Permanent Seeding Specifications
D=
February 15- April 1
April 1- July 31
August 1- October 25
October 25- February 15
Soil Amendments
Species Rate. Lbs/Acre
Korean Lespedeza
10
Fescue
40
Redtop
1
Winter rye (grain)
15
Common Bermuda
50
Lespedeza (unscarified)
30
German millet
40
Rye (grain- temporary)
120
Lime- 2000 Ibs/acre or follow recommendations from a soil test.
Fertilizer- 1000 Ibs/acre 8-8-8 or 10-10-10, or follow recommendations from a soil
test.

Page 16
Mulch- All seeded areas shall be mulched using small grain straw at a rate of 2000
Ibs/acre and anchored appropriately.
Any woody debris (slash or large trees) removed during development of the site should
be placed along the outer stockpile/compost area construction limits in the form of
brush piles and downed logs to provide cover and nesting habitat for wildlife.
The tailings disposal area must be capped with a material suitable to insure growth and
stability of permanent ground cover.
Whenever possible, disturbed areas should be vegetated with native warm season
grasses such as switch grass, Indian grass, bluestem and gamma grass.
In addition, the permittee shall consult with a professional wildlife biologist with the N.C.
Wildlife Resources Commission to enhance post -project wildlife habitat at the site.
4. Reclamation Plan:
Reclamation shall be conducted simultaneously with mining to the extent feasible. In
any event, reclamation shall be initiated as soon as feasible after completion or
termination of mining of any mine segment under permit. Final reclamation, including
revegetation, shall be completed within two years of completion or termination of
mining.
This permit, issued to Harris Mining Company August 14, 1972, renewed April 9, 1982,
transferred to Unimin Corporation June 30, 1986, modified March 1, 1990 and June 29,
1990, modified and renewed November 12, 1993, modified March 18, 1998, June 1,
1999, September 29, 2000, and February 26, 2002, renewed March 15, 2004, and
modified June 16, 2004, June 1, 2005, August 4, 2006 and June 2, 2008, is hereby
modified this 17th day of June, 2010 pursuant to GS 74-52.
By: jtkA��
James D. Simons, Director
Division of Land Resources
By Authority of the Secretary
Of the Department of Environment and Natural Resources

BY ENDORSEMENT THIS CHECK WHEN PAID IS ACCEPTED
' IN
FULL PAYMENT OF THE FOLLOWING ACCOUNT
Unimin Corporation
630951,.
VENDOR No: 054016 VENDOR DAME: NORTH CAROLINA DEPT. OF ( DATE: 2011/05/05
1
r
INVOICE No
INV. DATE
DESCRIPTION
GROSS AMOUNT
DISCOUNT
NET AMOUNT
050411
05/04/11
400.�0
f 0.00
400.00
_
•
I
1
r
r
1
l
I
1
- ET AMOUNT TOTAL
( 400. 00 ,
i
THIS DOCUMENT CONTAINS A WATERMARK AND VOID PANTOGRAPH
Bank af America _W1278 630951
im
' Oonbatled Dlabumeftnt
Sank of Ar.$M N.& .
Aaanta,.Dekalb County, la
Unimin Corporation OOD QR4C�R �0 Dp�l�
DATE AMOUNT
258 Elm Street, New Canaan, CT 06840
05/05/2011 1 $*******400.00
PAY Four Hundred 0/100 Dollars i
TO THE NORTH CAROLINA DEPT. OF
ORDER NATURAL RESOURCES AND
OF ENVIRONMENT
NC
t"
r•
y� AUTHORIZED SIGNATUIE
/
AUTHORIZED SIGNATURE