NC0000361_WQROS ARO Historic File_20211105

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MICHAEL
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September 01,2017
Carl Horvat
Unimin Corporation -
PO Box 588
Spruce Pine,NC 28777-0588
SUBJECT: Bioassay Compliance Inspection
Schoolhouse Quartz facility
Permit No.NC0000361
Avery County
Dear Permittee:
Enclosed please find a copy of the Bioassay Compliance Inspection Form for the whole effluent
toxicity samples collected on 8/8/2017 and 8/10/2017. The samples passed the chronic
Ceriodaphnia dubia toxicity tests conducted by the Aquatic Toxicology Branch of the DWR and
ETS Labs, Inc., and therefore the facility is compliant with Permit No.NC0000361.
Please refer to the enclosed inspection report for additional observations and comments. If you
or your staff have any questions,please call me at 828-296-4658.
Sincerely,
Daniel J Boss
Environmental Specialist
Asheville Regional Office
Enclosed: Inspection Report
Cc: WQS Asheville Regional Office -Enforcement File
NPDES Compliance/Enforcement Unit- Enforcement File
G:\WR\WQ\Avery\Wastewater\Industrial\Unimin Schoolhouse Quartz 00361\lnspections\Bioassay Compliant Letter 8.8.2017.rtf
State of North Carolina I Environmental Quality I Water Resources
2090 U.S.70 Highway,Swannanoa,NC 28778
828-296-4500

United States Environmental Protection Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
_ Water Compliance Inspection RepOft Approval expires 9-31-98
Section A:National Data.System Coding(i.e.,PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 2 15 I 3 I NC0000361 I11 12 17/08/08 17 18 I Q I 19 1 c I 20,
21I1 �1111 Illllll � llII hill IIIIII IIIIIIIII• ri r6
Inspection Work Days .Facility Self-Monitoring Evaluation Rating B1 QA Reserved
67 70 I I 71 J
I n I 72 i N i 73 I I 174 751 I I I I I I I80
IJ Section B:Facility Data
LJ 1 1
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number)
09:30AM 17/08/08 12/06/01
Schoolhouse Quartz facility
US Hwy 19-E Exit Time/Date Permit Expiration Date
Spruce Pine NC 28777 10:OOAM 17/08/08 16/02/29
Name(s)of Onsite Representafive(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
Stephen Andrew Wilson/ORC/826-765-4283/
i
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Carl Horvat,PO Box 588 Spruce Pine NC 287770588//704-765-4283/
No
Section C:Areas Evaluated During Inspection(Check only those areas evaluated)
Other
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers G� Date
Daniel J Boss 0 rj ARO WQ//828-296-4658/ ` 7
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type (Cont.) 1
31 NC0000361 I1 121. 17/08/08 17 181
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
Whole effluent toxicity samples were taken by myself(Daniel Boss) and Steve Wilson (lab supervisor)
at Unimin Schoolhouse Quartz facility on 8/8/2017 and 8/10/2017. Samples were composited over 24
hours using a refrigerated flow proportional sampler. These samples were used for a chronic
ceriodaphnia dubia pass-fail toxicity test. Samples were split with ETS Labs. The DWR test and ETS
Labs test both resulted in a pass. These results indicate that the effluent would not be predicted to
have water quality impacts.
Page# 2

NC DENR- Div.Of Water Quality Ramon
TOXICITY SAMPLE COLLECTION FORM page 1 of ARO FRO MRO RRO WaRO WiRO WSRO
Facility/Water Body V 4 1 M I JUA 00 A DIA.�(C QU01 ry-Z
NPDES# NC 0 0 t� Outfall#
County A U e,r Basin/Sub-basin
Receiving Stream GVd �'`� o 9—
Collector(s)(print) 0 6j S . V e
Grab Sample ❑ Composite Sample Composite Type:
❑Constant Time/Constant Volume: samples/hour for hours
Flow Proportional _�'a.y�6 _/�Lkm pw_ery
Sampling Equipment Used: ❑DWQ Portable Sampler or I Facility's Sampler
Date Began Time Began Date End Time End
l l �_70Gil
Sampling Site
Description y
Container: ❑4L(1 gal)PE cubitainer QOther(describe) of containers
Chlorinated: ❑Yes N No Collected on Ice or in Refrigerated Sampler: Ed Yes ❑No Shipped on Ice: Yes ❑No
Method of Shipment: Courier a Bus❑ Staff Other(explain):
Date/time of transfer to shipper or courier box: 6 � a-b
Comments:
"Split"sample,splitting lab name:
Did DWQ staff perform'the s lit? ' Q If NO,then did DWQ staff witness the split? /q
W- -. s r
Collector(s) 1
Signature: 04
��� &�- Date: Z� / / J0 j
Additional sample handler records:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
DWQ/Environmental Sciences Section
Aquatic Toxicology Unit Use street address only ifshipping Fed&or UPS
1621 Mail Service Center Street address: 4401Reedy Creek Road
Raleigh,NC 27699-1621 Raleigh,NC 27607
ESS Courier#:520101 phone: [phone]

NC DENR- Div.Of Water Quality'
OXICITY SAMPLE COLLECTION FORM—page 2of 2
3
ATU Temperature Rcd
Sample No. @ receipt,°C on Ice
RECEIVED CONDUCTIVITY, TRC,
date mhos/cm - ,µmhos/cm mg/L
-time date date
by time time
from by _ by
Lab
Comments:
Additional Notes(include date,time,signature,with notes):
Samalin instructions
1. SPLIT TESTS: Make sure the collector fills out,prints, and signs both the ATU sample collection form and the facility/contract r
laboratory Chain of Custody(COC)form. If one person collects the sample, and another individual splits the sample, both should
sign the COC and the ATU sample collection form. All information on both COC and the ATU sample collection form should agree
(i.e.,the date/time/signature for the collector,relinquished by/date/time,site description,pipe#,etc.) ATU uses only"true"splits for
certified laboratory evaluations. A split.sample is a single,well mixed, equally divided, composite or grab sample,sent to different
laboratories to conduct whole effluent toxicity tests. A well mixed sample before each''/<pour is critical to keep any effluent solids
from settling to the bottom. DWQ staff should be there to observe and instruct the facility staff in the collection/split process to
insure the sample is handled correctly. Ideally the DWQ staff should perform the split. If extenuating circumstances(i.e.late sample
collection times,etc.)would make this impractical,it should be noted on the sample collection form that DWQ staff was not present ,
at the time of the sample split. If the facility personnel collects and splits the sample,they need to sign the ATU sample collection
form as the collector, and also that they relinquished the sample to DWQ staff. DWQ staff will then need to sign and put the time
that they received the sample. Also, any additional information noted about the sample would be helpful to record.'on the ATU
sample collection form and the facility's COC(things such as color,smell,floating solids,suspended solids,etc.)
2. The person collecting the sample must sign the form for"Collector(signature)"at the bottom of page 1. Any subsequent transfer of
the sample must be recorded in the"Additional Sampler Handler records". In the"Collectors (print)" section at the top of page 1,
print the name of all collectors involved in the process. If the collector or additional sampler handler is a facility representative,
indicate this on the form.
3. With the adoption of the new chronic toxicity sampling schedule on January 11,2011, samples may be collected earlier than 1000
hours. We do request notification,however, if a sample is to be collected earlier than 0600 hours. The maximum holding time for
chronic toxicity samples is 36 hours for first use and 72 hours from first use for test renewals. The maximum holding time is 36
hours for acute toxicity samples. The holding time for composite samples begins at the time of completion of the 24-hr composite.
4. Rinse sample container with sample before filling. Completely.fill the sample with no air space.
5. Constant Time/Constant Volume composite samples should be at least 100 mLs volume per sample and collected at least evey 20
minutes unless the detention time of the facility is>24 hours. More information on types of composites can be found in"NPDES
Permit Standard Conditions".
6. Sample collection material may be tempered glass, polyethylene, perfluorocarbon plastics including Teflon®, 304 or 316 stainless
steel,polypropylene,polyvinylchloride,Tygon®, or silicone. All non-perfluorocarbon plastics should be discarded after use. DWQ
staff should not reuse non-perfluorocarbon plastics (polypropylene, LDPE, HDPE,polyvinylchloride, etc.) at different facilities for
collecting effluent samples. Tempered glass and perfluorocarbon(Teflon®)plastics may be reused after bioassay cleaning.
7. All samples should be iced during collection and transport to ensure a sample holding temperature of 56°C. The sample must be
received at 56°C or the sample will be invalid. Be sure to completely fill the coolers with ice and use large coolers whenever
possible. This is particularly crucial for shipping samples during warm weather months. Also, please notify ATU staff if samples
are being mailed in multiple coolers.

NC D ENR- ]Div.Of Water Quality Region
TOXICITY SAMPLE COLLECTION FORM page 1 of ARO FRO MRO RRO WaRO WiRO WSRO
1�m 1} SC v6 l 1 c u
Facility/Water Body �f� l u�C Q ct 4 �. c l
NPDES# NC 0 0 0 -3 Out" #
County Basin/Sub-basin `
Receiving Stream Ro-rL/' To-e k I've,r
Collector(s) (print)
Grab Sample ❑ Composite Sample � Composite Type:
❑Constant Time/Constant Volume: samples/hour for hours
r Flow Proportional 1c) k q
Sampling Equipment Used: ❑DWQ Portable Sampler or Facility's Sampler
Date Began Time Began Date End Time End
Sampling Site
Description
Container: ❑4L(1 gal)PE cubitainer a0ther(describe) L PC G cito o one r #of containers
Chlorinated: ❑Yes X3 No Collected on Ice or in Refrigerated Sampler:0 Yes ❑No Shipped on Ice:a Yes ❑No
Method of Shipment: Courier M Bus❑ Staff F Othar(e lain):
Date/time of transfer to shipper or courier bo Z.01 7 / O
Comments:
"Split"sample,splitting lab name:
Did DWQ staff perform the split? If NO,then did DWQ staff witness the s lit? C�
110NOaet s__. y caetteia4rraafnre..s u__ev_1 ilk _ a _ 'Il fib
Collector(s)
Signature: G =��' `�19�' Date:
Additional sam le handler records:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
Relinquished by: Received by: Date: Time:
DWQ/Environmental Sciences Section
Aquatic Toxicology Unit Use street address only if shipping FedFx or UPS
1621 Mail Service Center Street address: 4401 Reedy Creek Road
Raleigh,NC 27699-1621 Raleigh,NC 27607
ESS Courier#:520101 phone: [phone]

NC DENR- Div.Of Water Quality
OXICITY SAMPLE COLLECTION FORM—page 2of 2
: ~
ATU Temperature Rcd
Sample No. @ receipt,°C on Ice .
RECEIVED CONDUCTIVITY, TRC,
date mhos/cm - [mhos/cm mg/L
time date date
by time time
from by by
Lab
Comments:
Additional Notes(include date,time,signature,with notes):
Sampling instructions
1. SPLIT TESTS:. Make sure the collector fills out,prints, and signs both the ATU sample collection form and the facility/contract
laboratory Chain of Custody(COC)form. If one person collects the sample, and another individual splits the sample,both should
sign the COC and the ATU sample collection form. All information on both COC and the ATU sample collection form should agree
(i.e.,the date/time/signature for the collector,relinquished by/date/time,site description,pipe#,etc.) ATU uses only"true"splits for
certified laboratory evaluations. A split sample is a single,well mixed, equally divided, composite or grab sample,sent to different
laboratories to conduct whole effluent toxicity tests. A well mixed sample before each 11/4 pour is critical to keep any effluent solids
from settling to the bottom. DWQ staff should be there to observe and instruct the facility staff in the collection/split process to
insure the sample is handled correctly..Ideally the DWQ staff should perform the split. If extenuating circumstances(i.e.late sample
collection times;etc.)would make this impractical,it should be noted on the sample collection form that DWQ staff was not present
at the time of the sample split. If the facility personnel collects and splits the sample,they need to sign the ATU sample collection
form as the collector, and also that they relinquished the sample to DWQ staff. DWQ staff will then need to sign and put the time
that they received the sample. Also, any additional information noted about the sample would be helpful to record on the ATU
sample collection form and the facility's COC(things such as color,smell,floating solids,suspended solids,etc.)
2. The person collecting the sample must sign the form for"Collector(signature)"at the bottom of page 1. Any subsequent transfer of
the sample must be recorded in the"Additional Sampler Handler records". In the"Collectors (print)" section at the top of page 1,
print the name of all collectors involved in the process. If the collector or additional sampler handler is a facility representative,
indicate this on the form.
3. With the adoption of the new chronic toxicity sampling schedule on January 11,2011, samples may be collected earlier than 1000
hours. We do request notification,however, if a sample is to be collected earlier than 0600 hours. The maximum holding time for
chronic toxicity samples is 36 hours for first use and 72 hours from first use for test renewals. The maximum holding time is 36
hours for acute toxicity samples. The holding time for composite samples begins at the time of completion of the 24-hr composite.
4. Rinse sample container with sample before filling. Completely fill the sample with no air space.
5. Constant Time/Constant Volume composite samples should be at least 100 mLs volume per sample and collected at least every 20
minutes unless the detention time of the facility is>24 hours. More information on types of composites can be found in"NPDES
Permit Standard Conditions".
6. Sample collection material may be tempered glass, polyethylene, perfluorocarbon plastics including Teflon®, 304 or 316 stainless
steel,polypropylene,polyvinylchloride,TygoO,or silicone. All non-perfluorocarbon plastics should be discarded after use. DWQ
staff should not reuse non-perfluorocarbon plastics (polypropylene, LDPE, HDPE,polyvinylchloride, etc.) at different facilities for
collecting effluent samples. Tempered glass and perfluorocarbon(Teflon®)plastics may be reused after bioassay cleaning.
7. All samples should be iced during collection and transport to ensure a sample holding temperature of<6°C. The sample must be
received at <6°C or the sample will be invalid. Be sure to completely fill the coolers with ice and use large coolers whenever
possible. This is particularly crucial for shipping samples during warm weather months. Also, please notify ATU staff if samples
are being mailed in multiple coolers.

E, L
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R.van der Vaart
Governor Secretary
April 23, 2015
Doug Myers
Unimin Corporation
PO BOX 588
Spruce Pine,NC 28777
SUBJECT_ : Compliance Evaluation Inspection
Schoolhouse Quartz facility
Permit No: NC0000361
Avery County
Dear Mr. Myers:
On March 25, 2015, I conducted a Compliance Evaluation Inspection of the Schoolhouse processing area and
wastewater system. The facility appeared to be in compliance with permit NC0000361.
Please refer to the enclosed inspection report for detailed observations and comments. If you or your staff have
any questions,please call me at 828-296-4500.
Sincerely,
Linda Wiggs
Environmental Senior Specialist
Asheville Regional Office
Enc.Inspection Report /
cc: Steve Wilson,ORC(e-copy) V
MSC 1617-Central Files-Basement
she.v lle Ffi es
G:\WR\WQ\Avery\Wastewater\Industrial\Unimin Schoolhouse Quartz 00361\CEI.March2015.Ltr.doc
Water Quality Regional Operations—Asheville Regional Office
2090 U.S.Highway 70,Swannanoa,North Carolina 28778
Phone:[phone] FAX:[phone]
Internet:http://portal.nedenr.org/web/wq
An Equal Opportunity\Affirmative Action Employer

United States Environmental Protection Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
Water Compliance Inspection Report Approval expires8-31-98
Section A:National Data System Coding(i.e.,PCS)
Transaction Code - NPDES yr/mo/day Inspection Type Inspector Fac Type
1 LJ 2 15 1 3 I NC0000361 111 . 12 15/03/25 17 18 ci 19 I G I 201
2111, II II III III I II II I Ii ll• II 1 I IIIII 11111111111. f6
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ---- Reserved-------
67 70I I 71 I I 72 L N 73I I 174 75 80
L_' J Section B:Facility Data
LJ I 1
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number) 10:30AM 15/03/25 12/06/01
Schoolhouse Quartz facility _
US Hwy 19-E
Exit Time/Date Permit Expiration Date .
• _ '. '
Spruce Pine NC 28777 02:30PM 15/03/25 16/02/29
Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Carl Horvat,PO Box 588 Spruce Pine NC 287770588/r/04-765-4283/
Yes
Section C:Areas Evaluated During Inspection(Check only'those areas evaluated)
Permit Flow Measurement Operations.&Maintenance Records/Reports
Self-Monitoring Program Facility Site Review Effluent/Receiving Waters Laboratory
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
. l
Names)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Linda S Wiggs ARO WQ//828-296-4500 Ext4653/ /���
Signature of Ma geme t Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type (Cont.)
31 NC0000361 11 12 15/03/25 17 18 1 1
Section D:Summary of Finding/Comments(Attach additional)sheets of narrative and checklists as necessary)
Steve Wilson was present during all of the inspection and Doug Myers was present in the office during,
the beginning of the inspection. Steve Wilson recently became ORC of the Schoolhouse facility.The
previous ORC, Scott Fortner, recently left employment with Unimin.
Process Control: Part of their monitoring system is automated and operated by station operators.
Pump(waste sump)Station:All process water comes to the pump(sump) station. It comes in two
streams; fluoride and non-flouride. This process water is heavy with solids. The level of solids in this
component appeared to be excessive and oppressing intended operations. The fluoride and
non-flouride wet wells/chambers were indistinguishable and flows were readily flowing to the
emergency pond. It was unclear how this system was designed to be easily and regularly cleaned out
given its expected solids load..
Primary Clarifier(Thickeners): Scum was covering the fluoride clarifier.The clarifier is not set up with
a sweeper arm; using a sprinkler was discussed to control scum levels. The water was billowing over
the center well; a splash guard was discussed. There is a ball floating on the surface that is supposed
to be attached and move with the sludge scraper; it was not moving, however,the gears appeared to
be moving when observed through the observation window. The sludge blanket was 1.5'.
Secondary Clarifier(Separators):There did not appear to be sludge buildup in this treatment unit and
the discharge was clear.
Effluent Lagoon (pond/wetland): The effluent flow has concentrated to one side of the pond.Algae
growth is apparent on that side of the pond. It does not appear the algae are negatively impacting the
effluent quality.
Lab: Toxicity is sent to a contract lab and all other parameters are performed in house at the
Schoolhouse facility.An email was sent to Steve Wilson regarding labsheet errors/issues observed
during a paper review of the previous ORC records.
Page# 2

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 03/25/2015 Inspection Type: Compliance Evaluation.
Operations &Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? M ❑T ❑ ❑
Does the facility analyze process control parameters,foc.ex: MLSS; MCRT,Settleable ❑ ❑ El
Solids, pH, DO, Sludge Judge,and other that are applicable?
Comment: PH, sludge iudge
Permit Yes No NA'•NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new •❑ •❑ ❑
application?
Is the facility as described in the permit? 0 ;❑ ❑ ❑
#Are there any special conditions for the permit? ❑ ❑ ❑
Is access to the plant site restricted to the general public? 0 ❑ ❑ .❑
Is the inspector granted access to all areas for inspection? M ❑ ❑ ❑
Comment: Permit expires 2/29/20.16
Record Keeping r Yes No NA NE
Are-recordSr kept and maintained as required by the.permit? b 0 ❑ ❑ ❑
Is all required information readily available,complete and current? M ❑ ❑ ❑
Are all records maintained for 3 years(lab. reg.required 5 years)? E .:❑ ❑ ❑
Are analytical results consistent with data reported on DMRs? M ❑ ❑ 11
r.
Is the chain-of-custody complete? ❑.. ❑ ❑,
Dates,times and location of sampling ❑
Name of individual performing the sampling ❑
Results of analysis and calibration ❑
Dates of analysis ❑
Name of person performing analyses ❑
Transported COCs ❑
Are DMRs-complete-do they include all permit parameters? M- .❑ ❑ -❑
Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ 0 ❑
(if the facility is=or>5 MGD permitted flow)Do they operate 24/7.with a certified operator ❑ ❑ M ❑
on each shift? '
Is the ORC visitation.log available,and.current? M ❑ ❑ ❑
Is the ORC certified at grade equal to or higher than the facility classification? 0 '❑ ❑ ❑
is the backup operator certified at one grade less or greater than the facility classification? M ❑ ❑ ❑
Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑
Page# 3

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 03/25/2015 Inspection Type: Compliance Evaluation
Record Keeping Yes No NA NE
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ 0 ❑ {
Comment: Part of their monitoring system is automated and operated by station operators.
Scott Fortner is no longer the ORC; Steve Wilson is the ORC. }
Pump Station - Influent Yes No NA NE
Is the pump wet well free of bypass lines or structures? ❑ E ❑ ❑
Is the wet well free of excessive grease? 0 ❑ ❑ ❑
Are all pumps present? ❑ E ❑ ❑
Are all pumps operable? ❑ N ❑ ❑
Are float controls operable? ❑ ❑ 0 ❑
Is SCADA telemetry available and operational? El ❑ El
Is audible and visual alarm available and operational? ❑ ❑ ED
Comment: All process water comes to the pump(sump)station. It comes in two streams;fluoride and
non-flouride. This process water is heavy with solids. The level of solids in this component r
appeared to be excessive and oppressing intended operations. The fluoride and
non-flouride wet wells/chambers were indistinguishable and flows were readily flowin tq o the
emergency pond. It was unclear how this system was designed to be easily and regularly is
cleaned out given its expected solids load.
Primary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? 0 ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier? ❑ 0 ❑ ❑
Are weirs level? M ❑ ❑ ❑
Is the site free of weir blockage? N ❑ ❑ ❑
Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑
Is scum removal adequate? ❑ ❑ ❑ 1
Is the site free of excessive floating sludge? ❑ ❑ ❑
Is the drive unit operational? 0 ❑ ❑ ❑
Is the sludge blanket level acceptable? E ❑ ❑ ❑
1
Is the sludge blanket level acceptable?(Approximately%4 of the sidewall depth) 0 ❑ ❑ ❑ i
Comment: Scum was covering the fluoride clarifier.The clarifier is not set up with a sweeper arm;
using a sprinkler was discussed to control scum levels. The water was billowing over the
center well: a splash guard was discussed.There is a ball floating on the surface that is
supposed to be attached and move with the sludge scraper; it was not moving, however, the
gears appeared to be moving when observed through the observation window. The sludge
blanket was 1.5'.
Page# 4 1
i
i
i

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 03/26/2015 Inspection Type: Compliance Evaluation
Secondary Clarifier Yes No NA NE '
Is the clarifier free of black and odorous wastewater? M ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier? ❑ ❑ M ❑
Are,weirs level? ❑ ❑ M ❑
Is the site free of weir blockage? ❑ ❑ 0 ❑
Is the site free of evidence of short-circuiting? ❑ ❑ 0 ❑
Is scum removal adequate? ❑ ❑ 0 ❑
Is the site free of excessive floating sludge? ❑ ❑ ❑
Is the drive unit operational? ❑ ❑ 0 ❑
Is the return rate acceptable(low turbulence)? ❑ ❑ M ❑
Is the overflow clear of excessive solids/pin floc? ❑ ❑ ❑
Is the sludge blanket level acceptable?(Approximately%of the sidewall depth) ❑ ❑ M ❑
Comment: There did not appear to be sludge buildup in this treatment unit and the discharge was
clear.
Lagoons Yes No NA NE
Type of lagoons?
#Number of lagoons in operation at time of visit?
Are lagoons operated in?
#Is a re-circulation!line present? ❑ ❑ 0 ❑
Is lagoon free of excessive floating materials? 0 ❑ ❑ ❑
#Are baffles between ponds or effluent baffles adjustable? ❑ ❑ 0 ❑
Are dike slopes clear of woody vegetation? 0 ❑ ❑ ❑
Are weeds controlled around the edge of the lagoon? M '❑ ❑ ❑
Are dikes free of seepage? ❑ ❑ ❑
Are dikes free of erosion? ❑ ❑ ❑
Are dikes free of burrowing animals? ❑ ❑ ❑
#Has the sludge blanket in the lagoon(s)been measured periodically in multiple ❑ 0 -❑ ❑
locations?
#If excessive algae is present, has barley straw been used to help control the growth? ❑ 0 ❑ ❑
Is the lagoon surface free of weeds? ❑ ❑ ❑
Is the lagoon free of short circuiting? ❑ M ❑ ❑
Comment: The effluent flow has concentrated to one side of the pond.Algae growth is apparent on that
side of the pond. It does not appear the algae are negatively impacting the effluent quality.
Page# 5

Permit NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 03/25/2015 Inspection Type: Compliance Evaluation
Laboratory Yes No NA NE
Are field parameters performed by certified personnel or laboratory? ❑ ❑ ❑
Are all other parameters(excluding field parameters)performed by a certified lab? 0 ❑ ❑ ❑
#Is the facility using a contract lab? 0 ❑ ❑
#Is proper temperature set for sample storage.(kept at less than or equal to 6.0 degrees ❑ ❑ ❑
Celsius)?
Incubator(Fecal Coliform)set to 44.5 degrees Celsius+/-0.2 degrees? ❑ ❑ ❑
Incubator(BOD)set to 20.0 degrees Celsius+/-1.0 degrees? ❑ ❑ ❑
Comment: Toxicity is sent to a contract lab and all other parameters are performed in house at the
Schoolhouse facility.
Flow Measurement- Effluent Yes No NA NE
#Is flow meter-bsed for reporting? M ❑ ❑ ❑
Is flow meter calibrated annually? 0 ❑ ❑ ❑
Is the flow meter operational? M ❑ ❑ ❑
(if units are separated)Does the chart recorder match the flow meter? ❑ ❑ ❑
Comment:
Effluent'1Sampling Yes No NA NE
Is composite sampling flow proportional? M, ❑ ❑ ❑
Is sample collected below all treatment units? M ❑ ❑ ❑
Is proper volume collected? M ❑ ❑ ❑
Is the tubing clean? 0 ❑ ❑ ❑
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees 0 ❑ ❑ ❑
Celsius)?
Is the facility sampling performed as required by the permit(frequency,sampling type 0 ❑ ❑ ❑
representative)?
Comment:
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? M ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? N ❑ ❑ ❑
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑
Comment:
Upstream/Downstream Sampling Yes No NA NE
Page# 6

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 0 3/2 512 0 1 5 Inspection Type: Compliance Evaluation
Upstream/Downstream Sampling Yes No NA NE
/Is the facility sampling performed as required by the permit(frequency,sampling type, and 0 ❑ ❑ ❑
sampling location)?
Comment:
-
Page# 7

Lhav
c'Yfi.-:�er f;UNIMIN
7 z0 15 Corporate Environ`nental Affairs
Unimin Corporation
258 Elm St. egionoi QPEratlpnS{e'CiO;-i
New Canaan, CT 06840
(Phone) 800/223-2236 • (Fax)203/966-0351
February 9, 2015
Wastewater Branch
Water Quality Permitting Section
Division of Water Resources
1617 Mail Service Center
Raleigh,NC 27699-1617
Subject: Delegation of Signature Authority
Unimin Corporation u uf— _ � trfz Facility
NPDES Number 010-006V
To Whom It May Concern:
By notice of this letter,I hereby delegate signatory authority to each of the following individuals for all
permit applications, discharge monitoring reports, and other information relating to the operations at
Unimin Corporation—Schoolhouse Quartz Facility as required by all applicable federal, state, and
local environmental agencies specifically with the requirements for signatory authority as specified in
15A NCAC 2B.0506.
Doug Myers Schoolhouse Quartz Plant Manager
Angela Poston Schoolhouse Quartz Plant Superintendent
Steve Wilson Quartz Environmental Supervisor
Mike Vencill Regional General Manager
If you have any questions regarding this letter,please contact Jeff Ferguson at(828) 765-1114 ext. 1602.
Respectfully,
UNIMIN CORPORATION
1 0
Andrew G. Bradle
SVP/Environmental Affairs
CC: EA Files,Doug Myers,Angela Poston,Mike Vencill, Steve Wilson
GDW1 sheVille Regional Office,2090 TJ S 1wy:70;Swannanoa;NUZ9779
Water Quality Permitting Section, 1617 Mail Service Center,Raleigh,NC 27699-1617

Apr, S. 2013 3:44PM No, 7353 P. 1/3
-Water Pollution COMM System ORC Designation Form
wpcsO.CC
NCAC 15A,.08G.0z01
Perinittee Owner/Officer Name:Unimin Corporation—Sch6olhouse Ouaitz Facility/Doug Myq rs
Mailing Address: Post DMce Hox 588.
City; State: NC Zlp: 82 777� Phone#: 8t;M 765-4251
Signature, Date:.
L■■wt•laiw'Ywfwww,i■ ■wa �rwawaal.air.r■r*■w�■•wt■)•w�rr'ww'w�r■■itt■awwt•wwaawawaa■
FacHity Naih#:.Unitufn Corporation—Sch¢alhoulse Qq.art 1;aoility Permit#:. NC6000361
SVBMI<T A SEPARATE FORM FOR EACH TYPE
1F.P01ty'hue/Grade:
Blologim WWTF Surface Jr ption APR — 8 2013
Physioal/Chemic it 2_ _ Land Application T
Cdllection:System
DWQ/Surface'Water Protection Section
riarwia■■ +iRFwwit<Rwwson own 20 Ems■mr-rrrrrrt■r'hrkM*F'a"Noon ffice
Operator In Responsible Charge(ORQ
print pull Name: remains Lany Scott FArtner
Certificate Type/Grade/Numben Work Phone M. L)
Signature: _ Date:
"I certify that I agree to my dcsigrlalion as the Operalor in Responsible Charge for the radlity notod.I understand and will abide by the
rules and regulatlons pembting to the respor►sibilf2irS'bf the ORC as set fbnh In I SA NCAC 080,0204 Snd railing to do 0o call rosull to
Disciplinary Actions by the Willer Pollution Control Sysicin Opaatois Certification Commission"
was■■■wrwaww■Y■a■aa■■pan rr mum"rRFwkF>Awo fin anon■r■rrnaaaa OEM r ass■rw.wrrmumaa .
Back-Up Operator 1n Responsible Charge(BU ORC)
Print Full Name: Ste&n—Andrez.11Vilson --
Certificate Type/Grad umber:PC/Grade III 986002 . Work Phone#:( 2 ) -4283
Signature: Date:
"i certiry that I agree to my designation as the operator in Respoltilble Charge For the fscili(y noted,I understand and will abide by the
rules an'd'tegula1i0nspenainlnq to Illo,respodsibilidas pf the ORC as Sot ford)In iSA NPAC 08(i.0704 and failing to do so can result in
Dlsciplinaty Action by the Water Pollvllon Control Syakm' Operators Certification Commisslo t"
■�awaawawwwwwaw9aw■wrrwawrrer,wwwa.Rartirrrwwarwarwwrrarwawwrr,arrraaarrp■rrr
]Nall,fax or errrdh'*orlgbial to? WPCSOCtv,1614 Mall Servleo
Cetster,Ralolah,NC 21699-I618 Fair
919,007.6493
Email=certadcllnQncdenrgaV
Mall or fax a copy so rife Asheville l'yyelleville Mooresville rakl h
approprlaee Regloar! 2090 US Hw�yy 70 221 13Hr Jl SI 61013 Comer Ave 3800 carrell Ih
Ofikee Swdnaanoe 28778 Svite 7I4 Suite 301 Raleigh 11609
Fax:[phone] FkWtevlIla 29101-5043 MDOOsvAle 20115 I?=919.57IA718
Phono:329,296.4900 Vski 910A86.0707 FNYi 794.663,6040 Fhonm919.791A200
phone:[phone] Phdne;704.60.1699
Washtnglon IYthntngloo w1r iton-srulerd
943 Washln8loh.S4 Moll 127 Grdinaf pi 585 W440town sl
Wash1ng1oti27889 WIIn1198t4pM05-284S Wlimon•Sakm27107
Foxl 252.946;4315 Pek:916.350.2018 Fax:336.771A631
Pliant:2.52.940.6481 Phonej910.746.7115 Phonei336.711,5000
Revised 02-2013

APr, 8. 2013 3:45PM. No. 7353 P. 2/3 .
pYrcility Nauic: T7iiitnl,t Cornoratiotl Soltoolltouse Ot7alf pacilit}!Perrnit#: NCO000361
INN fatirr rM■ar rrarrr IMP Ifr P'AN NNE MV own r*Nun Eno Jr rrakyl!.r rarr rr rr■rrM OWN WON On rr '
Back-Up Operator in Responsible Charge 93-403TJ ORC)
Print pill[Name: Rick Singleton
Certificate Type/Grade/Number;PC/C3rdde if/987053 rk Phone it;(On 765-1114
Signature: A�� _,,•_.__,:. 1]nte: S�)
"I ccriity that I agree to my designalion ns dic Operalor In Responsible Chargo for the facility noted.I Itndcrsland and will abide by Ilse
roles and rsgulallons penAining to tha mponsiblllllas ol'llle ORC as set forth In 15ANICAC 080 A204 and falling[ado sown result in
Disciplinary Actiods by the Writer polhd[art Control Syslent 0perdlore CertificationCommisviw'
f'��,ale[a�awlfl■r�r�llallt•frfw��rf■1�a11wa■R>♦err■■1■■■■ar■■r■}�'�IIRAAA■araaa■aA■■
Back-Up Operator in Responsible Charge QRTJ ORC)
c11}� �
°'`1?J'rilitNamb: DglinyMorrieBuchallati
i
a:<�;{,;;;Certificate:Type,-:an�,(3r ode: P1 eical/C Certificate#;_ 987681
Work Telephone: (8�765-1114 Signature: /13
"1 certify 111011 agree to nlydesignadon as ilia 00ergtor In Responslbie Charge for Ilse Ilty noted,i undcaland and will abide by ilia
rules and regulations porintning to die responsibilities of Ilse ORC as sot fonb in 15ANCAC 090.0204 surd falling to do so can resell in
Disciplinary Actions by lie WaterPoliulion Control System Operators Cenli'ludon Comnrlsslon"
rrr■■■ra■■�■fir■■rrrr■rrrrrrrrr■■rrrr■■■r■■r■r■r■r■■■rrrr■a■rraararrrrrrrrr
Aack Up Operator In Responsible Charge(BU ORGY
Print lull Name: Dane Ark Christman
Certificate lI pe/Grade/Namb t•.PC/Grade]1.1994682 Work phone P. (828)§V 2169
Signature: Abate;
lip
"I CCrtliy Illal i ngrea to my designation as the Opemlor in Responsible Charge for the fa011i1Y noted.I»ndcrstmrd and Will abide by the
mice and regulations porininlog to the responsibililics of the ORC asset forth lit BA NCW 08Q.0204 and falling to do so emm result In
Disciplinary Actions by ibo Water Pollution Control System Operators Certification Conmiisslon"
1a Ylrarrrrr rrrr■rrrr m(rrralal SEES a■■1aa■MEN rYrrrrr Yrrr■laa■a■■aa■■■aaaa KNEW
Back-'Up Operator in Responsible Charge(DU ORC)
print pall Naine:
Certificate Type/Cnade/N'ttmber: Work phone#:U
Signature: Date:
"I Corti fy ilia[I agree to my designation ns the Oporalor In Responsible Charge for the facility noted.I undastand and will abide by llle
rotes And regulations portatning to the responsibllbles of ite ORC as sot rbnit in 15ANCAC 080.0204 and filling to do,so can result in
Disciplinary Actions by Ilrc WatcrPallullon Control SysicmOperaton Cortifiw ion Connuisslon"
zarlNrrrrrrrraara=arrrrr*ar<ar[awxaaawrr�arrarrrirrrrrrr>.rr*RraRrwwarrrrtrrrrrera■
Revised 02 2013

Apr, 8, 2013 3:45PM No, 7353 P. 3/3 �l
Additional Backup ORCs for Unimin Corporation-Schoolhouse Quartz
Facillty
Jeff Ferguson to: certadmin 04/08/2013 03:49 PM
From: Jeff Ferguson/Unimin
To; [e-mail]
Please find attached additional Backup ORCs for Unimin Corporation's Schoolhouse Quartz Facility. The
primary ORC will remain Larry Scott Fortner while the backup ORCs are now Denny Buchanan, pane
Christman, Bruce Perkins,Sandra Phillips, Flick Singleton and Steve Wilson.
Thanks,
Jeff Ferguson
130408 SQ ORC form Add Backups.pdf

WLA.La
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald van der Vaart
Governor
Secretary
February 6,2015
CERTIFIED MAIL:7012 2210 0002 3534 9007
RETURN RECEIPT REQUESTED
Mr. Steve Taylor ? l'WPVS C7(L C_'
Unimin Corp
P.O.Box 588
Spruce Pine,NC 28777-0588
SUBJECT: NOTICE OF VIOLATION:NOV-2015-TX-0002
Whole Effluent Toxicity(WET)Testing
NPDES Permit No.NC0000361
Unimin-Schoolhouse(Mica)W WTP
Avery County
Dear Mr.Taylor:
This is to inform you that a review of your toxicity self-monitoring report form for the month of November 2014 indicates'a violation of the
toxicity limitation specified in your NPDES Permit.
You should take whatever remedial actions are necessary to eliminate the conditions causing the effluent toxicity violation(s). Your
efforts may include conducting a Toxicity Reduction Evaluation(TRE),a site-specific study designed to identify the causative agents
of effluent toxicity,isolate the sources of toxicity,evaluate the effectiveness of toxicity control options,and confirm reductions in
effluent toxicity. Please be aware that North Carolina General Statutes provide for assessment of civil penalties for violations of
NPDES permit limitations and requirements.
The reverse side of this Notice contains important information concerning your Whole Effluent Toxicity Monitoring and Reporting
Requirements. Please note appropriate mailing addresses for submitting your Discharge Monitoring Reports(DMRs)and Aquatic
Toxicity(AT)Test Forms. We encourage you to review this information;if it would be helpful to discuss this situation or possible
solutions to resolve effluent toxicity noncompliance,please contact Mr.John Giorgino with this office at(919)743-8441.
S' erely,
c
Cin"Moore, pervisor Aquatic Toxicology Branch
Division of Water Resources,NCDENR
cc:dL�donT%` i 5�o:n' heuille Regiona t7ff ce
in
Jeff Menzel-Asheville Regional Ottice I V D
Central Files Division of;4'aier Resouress
F E B 1 9 2015
Water Quality Regional Operations
Asheville r egion_I COff, e
Water Sciences Section ——
1621 Mail Service Center,Raleigh,North Carolina 27699-1621
Location:4401 Reedy Creek Road,Raleigh,North Carolina 27607
Phone:[phone] FAX:[phone]
Internet:portal.ncdenr.org/web/wgihome
An Equal Opportunity 1 Affirmative Action Employer

WHOLE EFFLUENT TOXICITY MONITORING AND REPORTING INFORMATION
➢ The following items are provided in an effort to assist you with identifying critical and sometimes overlooked toxicity testing and reporting
information. Please take time to review this information.The items below do not address or include all the toxicity testing and reporting
reauirements contained in your NPDES permit. If you should have any questions about your toxicity testing requirement,please contact Mr.
John Giorgino with the Aquatic Toxicology Branch at(919)743-8401 or another Branch representative at the same number.
➢ The permittee is responsible for ensuring that toxicity testing is conducted accordink to the permit requirement and that toxicity report forms are
appropriately filed.
➢ The reporting of whole effluent toxicity testing data is a dual requirement. All toxicity test results must be entered(with the appropriate
parameter code)on your monthly Discharge Monitoring Report which is submitted to:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh,NC 27699-1617
IN ADDITION
Toxicity test data(original"AT"form)must be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
➢ Toxicity test results shall be filed with the Water Sciences Section no later than 30 days after the end of the reporting period(eg,January
test result is due by the end of February).
➢ Toxicity test condition language contained in your NPDES permit may require use of multiple concentration.toxicity testing upon failure of any
single quarterly toxicity test. If the initial pass/fail test fails or if the chronic value is lower than the permit limit,then at least two multiple
concentration toxicity tests(one per month)will be conducted over the following two months. As many analyses as can be completed will be
accepted. If your NPDES permit does not require use of multiple concentration toxicity testing upon failure of any single quarterly test, you
may choose to conduct either single concentration toxicity testing or multiple concentration toxicity testing per the Division's WET enforcement
initiatives effective July 1, 1999. Follow-up multiple concentration toxicity testing will influence the Division's enforcement response.
➢ Toxicity testing months are specified by the NPDES Permit,except for NPDES Permits which contain episodic toxicity monitoring
requirements(eg,if the testing months.specified in your NPDES permit are March,June,September,and December,then toxicity testing must
be conducted during these months).
➢ If your NPDES Permit specifies episodic monitoring and your facility does not have a discharge from January 1-June 30,then you must provide
written notification to the Water Sciences Section by June 30 that a discharge did not occur during the first six months of the calendar year.
➢ If you receive notification from your contract laboratory that a test was invalidated,you should immediately notify the Water Sciences Section
at(919)743-8401 and provide written documentation indicating why the test was invalidated and the date when follow-up testing will occur.
➢ If your facility is required to conduct toxicity testing during a month in which no discharge occurs,you should complete the information block
located at the top of the AT form indicating the facility name,permit number,pipe number,county and the month/year of the subject report.
You should also write"No Flow"on the AT form,sign the form and submit following normal procedures.
➢ The Aquatic Toxicity Test forms shall be signed by the facility's Operator in Responsible Charge(ORC)except for facilities which have not
received a facility classification. In these cases,a duly authorized facility representative must sign the AT form. The AT form must also be
signed by the performing lab supervisor.
➢ To determine if your AT test forms were received on time by the Division of Water Resources,you may consider submitting your toxicily test
results certified mail,return receipt requested to the Water Sciences Section.
Water Sciences Section
1621 Mail Service Center,Raleigh,North Carolina 27699-1621
Location:4401 Reedy Creek Road,Raleigh,North Carolina 27607
Phone:[phone] FAX:[phone]
Internet:portal.ncdenr.orglweblwglhome
An Equal Opportunity 1 Affirmative Action Employer

AMENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald van der Vaart
Governor Secretary
February 6,2015
CERTIFIED MAIL: 7012 2210 0002 3534 9007
RETURN RECEIPT REQUESTED
Mr. Steve Taylor _
Unimin Corp
P.O.Box 588
Spruce Pine,NC 28777-0588
SUBJECT: NOTICE OF VIOLATION:NOV-2015-TX-0002
Whole Effluent Toxicity(WET)Testing
NPDES Permit No.NC0000361
Unimin-Schoolhouse(Mica)W WTP
Avery County
Dear Mr.Taylor:
This is to inform you that review of your toxicity self-monitoring report form for the month of November 2014 indicates a violation of the
toxicity limitation specified in your NPDES Permit.
You should take whatever remedial actions are necessary to eliminate the conditions causing the effluent toxicity violation(s). Your
efforts may include conducting a Toxicity Reduction Evaluation(TRE),a site-specific study designed to identify the causative agents
of effluent toxicity,isolate the sources of toxicity,evaluate the effectiveness of toxicity control options,and confirm reductions in
effluent toxicity. Please be aware that North Carolina General Statutes provide for assessment of civil penalties for violations of
NPDES permit limitations and requirements.
The reverse side of this Notice contains important information concerning your Whole Effluent Toxicity Monitoring and Reporting
Requirements. Please note appropriate mailing addresses for submitting your Discharge Monitoring Reports(DMRs)and Aquatic
Toxicity(AT)Test Forms. We encourage you to review this information;if it would be helpful to discuss this situation or possible
solutions to resolve effluent toxicity noncompliance,please contact Mr.John Giorgino with this office at(919)743-8441.
S' erely,
e
Cindy Moore,S pervisor Aquatic Toxicology Branch
Division of Water Resources,NCDENR
cc: Landon Davidson-Asheville Regional Office
IR MJ Men-z Ass igRggj al C)fftce RECEI ED
Central Files Division of Water Resources
F E B 1 9 2015
Water Quality Recllonal Operations
Water Sciences Section
Asheville Fregionat O;;ice
1621 Mail Service Center,Raleigh,North Carolina 27699-1621
Location:4401 Reedy Creek Road,Raleigh,North Carolina 27607
Phone:[phone] FAX:[phone]
Intemet:portal.ncdenr.org/web/wq/home
An Equal Opportunity 1 Affirmative Action Employer

WHOLE EFFLUENT TOXICITY MONITORING AND REPORTING INFORMATION
➢ The following items are provided in an effort to assist you with identifying critical and sometimes overlooked toxicity testing and reporting
information. Please take time to review this information.The items below do not address or include all the toxicity testing and reporting
requirements contained in your NPDES permit. If you should have any questions about your toxicity testing requirement,please contact Mr.
John Giorgino with the Aquatic Toxicology Branch at(919)743-8401 or another Branch representative at the same number.
➢ The permittee is responsible for ensuring that toxicity testing is conducted according to the permit requirement and that toxicity report forms are
appropriately filed.
➢ The reporting of whole effluent toxicity testing data is a dual requirement. All toxicity test results must be entered(with the appropriate
parameter code)on your monthly Discharge Monitoring Report which is submitted to:
North Carolina Division of Water Resources
Central Files
1617 Mail Service Center
Raleigh,NC 27699-1617
IN ADDITION
Toxicity test data(original"AT"form)must be submitted to the following address:
North Carolina Division of Water Resources
Water Sciences Section
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
➢ Toxicity test results shall be filed with the Water Sciences Section no later than 30 days after the end of the reporting period(eg,January
test result is due by the end of February).
➢ Toxicity test condition language contained in your NPDES permit may require use of multiple concentration.toxicity testing upon failure of any
single quarterly toxicity test. If the initial pass/fail test fails or if the chronic value is lower than the permit limit,then at least two multiple
concentration toxicity tests(one per month)will be conducted over the following two months. As many analyses as can be completed will be
accepted. If your NPDES permit does not require use of multiple concentration toxicity testing upon failure of any single quarterly test, you
may choose to conduct either single concentration toxicity testing or multiple concentration toxicity testing per the Division's WET enforcement_
initiatives effective July 1, 1999. Follow-up multiple concentration toxicity testing will influence the Division's enforcement response.
➢ Toxicity testing months are specified by the NPDES Permit,except for NPDES Permits which contain episodic toxicity monitoring
requirements(eg,if the testing months specified in your NPDES permit are March,June,September,and December,then toxicity testing must
be conducted during these months).
➢ If your NPDES Permit specifies episodic monitoring and your facility does not have a discharge from January 1-June 30,then you must provide
written notification to the Water Sciences Section by June 30 that a discharge did not occur during the first six months of the calendar year.
➢ If you receive notification from your contract laboratory that a test was invalidated,you should immediately notify the Water Sciences Section
at(919)743-8401 and provide written documentation indicating why the test was invalidated and the date when follow-up testing will occur.
➢ If your facility is required to conduct toxicity testing during a month in which no discharge occurs,you should complete the information block
located at the top of the AT form indicating the facility name,permit number,pipe number,county and the month/year of the subject report.
You should also write"No Flow"on the AT form,sign the form and submit following normal procedures.
➢ The Aquatic Toxicity Test forms shall be signed by the facility's Operator in Responsible Charge(ORC)except for facilities which have not
received a facility classification. In these cases,a duly authorized facility representative must sign the AT form. The AT form must also be
signed by the performing lab supervisor.
_ ➢ To determineif your-AT-test forms were received on time by the Division of Water Resources,you may consider submitting your toxicity test
r results certified mail,return receipt requested to the Water Sciences Section.
c
S
s
i Water Sciences Section
1621 Mail Service Center,Raleigh,North Carolina 27699-1621
Location:4401 Reedy Creek Road,Raleigh,North Carolina 27607
Phone:[phone] FAX:[phone]
Internet:portal.ncdenr.orglweb/wq/home
An Equal Opportunity\AffirmaUve Action Employer

NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
August 5,2015
Andrew G.Bradley
Unimin Corporation
Shoolhouse Quartz Facility
PO Box 588
Spruce Pine,NC 28777
Subject: Acknowledgement of Permit Renewal
Permit NC0000361
Mitchell County
Dear Permittee:
The NPDES Unit received your permit renewal application on July 30, 2015. A member of the
NPDES Unit will review your application. They will contact you if additional information is required to
complete your permit renewal. You should expect to receive a draft permit approximately 30-45 days
before your existing permit expires.
If you have any additional questions concerning renewal of the subject permit, please contact Tom
Belnick at(919) 807-6389.
Sincerely,
V/tre cti
t ;
Wren Thedford '''}' R"" -1VED
t Division of Water Resources ,
Wastewater Branch '
AUG 1 0 2015
cc: Central Files
i
Asshe-vri1bc!RvgiK7Tal-Off_ice water Quatit;Regional Operations
Ashevi!i�.-R_.,,na,Omce_ ;
NPDES Unit
' r
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] Fax:[phone]Customer Service:1-877-623-6748
Internet::www.ncwater.org
An Equal OpportunitylAffirmative Action Employer

NPDES PERMIT APPLICATION — SHORT FORM C — Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number INCO000361
Please print or type.
1. Contact Information:
Owner Name Unimin Corporation
Facility Name Unimin Corporation- Schoolhouse Quartz Facility
Mailing Address P. O. Box 588
City Spruce Pine
State / Zip Code NC / 28777
Telephone Number [phone]
CEI D DENR/DWR
Fax Number [phone] JUL 3 0 2015
e-mail Address n/a V afer Quality
ermitting Section
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 107 Harris Mining Company Road, Hwy. 19E
City Spruce Pine
State / Zip Code NC / 28777
County Avery
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name Unimin Corporation- SchoolhousQuartz Facilitys .--;>. ,»:_ :...,,Y,�, ;z
Mailing Address P. O. Box 588
City Spruce Pine DIVision of Water Resources
State / Zip Code NC / 28777
Telephone Number [phone] AUG 1 0 2015
Fax Number [phone]
. .. :1 auy-._yiu i vvera ions
Ashcvi,ie R�,g;onal Of4w
4. Ownership Status: r
Federal ❑ State ❑ Private..® „a,. ., ti: Public_-;.De,
Page 1 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
5. Standard Industrial Classification (SIC) code(s): 1459
6. Number of employees: 95
7. Describe the treatment system List all installed waste treatment components with capacities,
describe the processes that generate wastewaters. If the space provided is not sufficient attach a
separate sheet of paper with the system description.
See attached CONFIDENTIAL operating status.
S. Is facility covered under federal effluent limitation guidelines? No ® Yes ❑
If yes, specify the category?
9. Principal product(s) produced: High Purity Quartz
Principal raw material(s) consumed: N/A
Briefly describe the manufacturing process(es):
See attached CONFIDENTIAL operating status.
Page 2 of 5 C-MI 10108

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
10. Amount of principal product produced or raw material consumed
List specific amounts consumed and/or units of roduction over the last three ears
Product Produced or Raw Material Product Produced or Raw Material
Consumed Consumed
AVERAGE PEAK
per Day
per Month
per Year *Confidential production data will be submitted separately.
11. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: 7 Duration: 24 hrs/day
12. Types of wastewater discharged to surface waters only
Discharge Flow
GALLONS PER DAY
Sanitary - monthly average 0
Utility water, etc. - monthly average 0
Process water - monthly average 940,600
Stormwater-monthly average unknown
Other-monthly average
Explain: -72,000 (mine dewatering outfall 002)
Monthly Average
total discharge (all types) 1,012,600
13. Number of separate discharge points: 2 Outfall Identification number(s) 001& 002
(numerous stormwater outfalls flow unknown)
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall; including
latitude and longitude):
North Toe River
Page 3 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Effluent Data [for new or proposed discharges]
Provide data for the parameters listed. Temperature and pH shall be grab samples,for all other parameters 24-hour
composite sampling shall be used.If more than one analysis is reported, report daily maximum and monthly average.
If only one analysis is reported, report as daily maximum.
NOTE:Permittees requesting renewal should complete the table ONLY for the parameters
currently monitored. Summarize the ast 3 years of e uent data.
Parameter Daily Monthly Units of
Maximum Average Measurement
Biochemical Oxygen Demand (BOD5) N/A
Chemical Oxygen Demand (COD) N/A
Total Organic Carbon N/A
Total Suspended Solids 132.2 11.78 lb/day
Ammonia as N N/A
Temperature (Summer) N/A
Temperature (Winter) N/A
pH 9.9 N/A
Fecal Coliform (If sanitary waste is N/A
present)
Total Residual Chlorine (if chlorine is N/A
used)
16. List all permits, construction approvals and/or applications (check all that apply and provide permit
numbers or check none if not applicable):
Permit
Type Permit Number Type Number
Hazardous Waste (RCRA) NESHAPS (CAA)
UIC (SDWA) Ocean Dumping (MPRSA)
NPDES NC0000361 Dredge or fill (Section 404 or CWA)
PSD (CAA) Other NC Air Permit 04000R21
Non-attainment program Mine Permit No. 06-03, NPDES Gen. NCG020795
17. List any chemicals that may be discharged (Please list and explain source and potential
amounts.)
See attached CONFIDENTIAL operating status.
Page 4 of 5 C-MI 10/08

NPDES PERMIT APPLICATION - SHORT FORM C - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
18. Is this facility located on Indian country? (check one)
Yes ❑ No
19. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Andrew G. Bradley Sr. VP - Operations
Printed name of Person Signing Title
1 �9I
Signature of Applicant Dat
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 5 of 5 C-MI 10/08

Unimin Corporation — Schoolhouse Quartz Facility

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Facility Information Facility
atitude: 35256' 20" Sub-Basin: 04-03-06
Location
Longitude: 81259'45" HUC#: 06010108
-Quad#: Linville Falls (D11SW)
Stream Class: C Trout
Receiving Stream: North Toe River Unimin.-Schoolhouse Quartz Facility
North NC0000361
Permitted Flow: 2.16 MGD

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality „e
Beverly Eaves Perdue Charles Wakild, P. E. Dee Ere man
Governor Director .
April 30,2012 `s✓7 y
MAY — 1 2012
Mr.Jeffrey S.Ferguson,P.E.
Unimin Corporation WATER QUALITY SECTION
P.O.Box 588 ASHHIEVIt_L�E 1Ci 1AL OFFICE
Spruce Pine,NC 28777
Subject: NPDES Permit Issuance
Permit No.NC0000361
Unimin Corporation-Schoolhouse Quartz Facility
Facility-Class H
Avery County
Dear Mr.Ferguson:
Division personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly,we are forwarding the attached NPDES discharge 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 U.S. Environmental
Protection Agency dated October 15,2007(or as subsequently amended).
The permit authorizes Unimin Corporation to discharge up to 2.16 MGD of treated
process wastewater from Schoolhouse Quartz Facility to the North Toe River, a class C-Trout
water in the French Broad River Basin. The final permit includes discharge requirements
and/or limitations for flow,total fluoride,total suspended solids,turbidity, chlorides and other
parameters.
The following modifications remain in the final permit:
• The facility address was updated to 107 Harris Mining Company Road,Highway
19E in Spruce Pine,NC.
• Oil and grease monitoring will no longer be required based on the results of
submitted data.
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748
Internet:www.ncwaterguali�.org A7On�e'
An Equal Opportunity 1 Affirmative Action Employer 1°t d'f`-'Carolina
VVuturully

' 4
Mr.Ferguson
April 30,2012
Page 2 of 3
• There was a minor language change on the effluent page regarding the turbidity
footnote.
• The monitoring frequency for total fluoride,total suspended solids,turbidity,
settleable solids and pH was reduced to weekly on effluent page A(1).
�r
• Language on the permit cover page regarding the discharge of stormwater was
removed.
•: Language on the suppleme t to cover permit page regarding the discharge of
mine dewatering effluent a d stormwater was removed. The Schoolhouse
Facility will be issued an m vidual stormwater permit to address stormwater
management and monitoring. In addition, the entire section(Part II in the
previous permit)regarding stormwater monitoring, controls and limitations for
permitted discharges was removed from the permit
• Language in Condition A.2. Chronic Toxicity Permit Limit was modified and a
new paragraph regarding data submittal was added(the second paragraph from
the end of the condition).
If any parts,measurement frequencies or sampling requirements contained in this
permit are unacceptable to you,you have the right to an adjudicatory hearing upon written
request within thirty(30) days following receipt of this letter. This request must be in the form
of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and
filed with the Office of Administrative Hearings,6714 Mail Service Center,Raleigh,North
Carolina 27699-6714. Unless such a demand is made,this permit shall be final and binding.
Please take notice that this permit is not transferable. The Division may require
modification or revocation and reissuance of the permit. 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 permits may be required.

Mr.Ferguson
' April 30,2012
Page 3 of 3
If you have any questions or need additional information,please contact Ms.Jacquelyn
Nowell at telephone number(919) 807-6386.
Sincerely,
Charles Wakild,P.E.
Attachments
cc: Asheville.Regional Office/Surface Water Pro_tection� S o(ecopy)
Aquatic Toxicology(ecopy)
NPDES File
Central Files

r
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 from a facility located at the
Schoolhouse Quartz Facility
107 Harris Mining Company Road,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 June 1, 2012.
This permit and the authorization to discharge shall expire at midnight on February z 2016.
Signed this day April 30, 2012.
arles Wakild., 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 Facility
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,3influent slurry pumps;
• 80 foot diameter thickener
• Overflow tanks;
• Disk filters;
• 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 Facility, 107 Harris Mining
Company Road,Spruce Pine, Avery County, and;
2. Discharge treated wastewater through Outfall 001 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.

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Facility Information Facility X
Latitude: 35s56' 20" Sub-Basin: 04-03-06
Location
Longitude: 81959'45" HUC#: 06010108
K
Quad#: Linville Falls (D11SW)
Stream Class: C Trout
Receiving Stream: North Toe River Unimin.-Schoolhouse Quartz Facility
North NC0000361
Permitted Flow: 2.16 MGD Avery Count

NCO000361
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
Jh Re
quirements
ir LIMITATIONS
Effluent
SampleCharacteristics
Monthly
,Avers --­- vp
go-;.- .,Maximum
Frequency
Flow 2.16 MGD Continuous Recording I or E
Total Fluoride 109.0 lb/day 218.0 lb/day Weekly Composite E, U, D
Total Suspended 450.0 lb/day 721.0 lb/day Weekly Composite E, U,D
Solids
Settleable Solids Weekly Grab E
Turbidity2 Weekly Grab E,U,D
pH3 Daily Grab E, U,D
Chloride4 Quarterly Composite E
Chronic Toxicity5 Quarterly Composite E
Notes:
1. Sample locations: E-Effluent,I-Influent,U-Kaolin Pumphouse,D -Franklintown
bridge. Instream samples shall be grab samples and shallbe conducted weekly.
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. See Special Condition A. (7).
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,quarterly 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.If reporting pass/fail results using the parameter code TGP3B,DWQ Form
AT-1 (original,) is sent'to the below address. If reporting Chronic Value results using the
parameter code THP3B,DWQ Form AT-3 (original) is to be sent to the following
address:
Attention: NC DENR/DWQ/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
A. (2).CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) (cont.)
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.
If the Permittee monitors any pollutant more frequently than required by this permit, the
results of such monitoring shall be included in the calculation and reporting of the data
submitted on the DMR and all AT Forms submitted.
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.

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PART II
STANDARD CONDITIONS FOR NPDES PERMITS
Section A. Definitions
2/Month
Samples are collected twice per month with at least ten calendar days between sampling events. These samples shall be
representative of the wastewater discharged during the sample period.
3/Week
Samples are collected three times per week on three separate calendar days.These samples shall be representative of
the wastewater discharged during the sample period.
Act or"the Act"
The Federal Water Pollution Control Act, also known as the Clean Water Act(CWA),as amended, 33 USC 1251,et.
seq.
Annual Average
The arithmetic mean of all"daily discharges" of a pollutant measured during the calendar year.In the case of fecal
coliform,the geometric mean of such discharges.
Arithmetic Mean
The summation of the individual values divided by the number of individual values.
Bypass
The known diversion of waste streams from any portion of a treatment facility including the collection system,which is
not a designed or established or operating mode for the facility.
Calendar Day
The period from midnight of one day until midnight of the next day. However,for purposes of this permit,any
consecutive 24-hour period that reasonably represents the calendar day may be used for sampling.
Calendar Week
The period from Sunday through the following Saturday.
Calendar Quarter
One of the following distinct periods: January through March,April through June,July through September,and
October through December.
Composite Sample
A sample collected over a 24-hour period by continuous sampling or combining grab samples of at least 100 mL in
such a manner as to result in a total sample representative of the wastewater discharge during the sample period. The
Director may designate the most appropriate method(specific number and size of aliquots necessary,the time interval
between grab samples, etc.)on a case-by-case basis. Samples may be collected manually or automatically. Composite
samples may be obtained by the following methods:
(1) Continuous: a single,continuous sample collected over a 24-hour period proportional to the rate of flow.
(2) Constant time/variable volume: a series of grab samples collected at equal time intervals over a 24 hour period
of discharge and combined proportional to the rate of flow measured at the time of individual sample
collection,or
(3) Variable time/constant volume: a series of grab samples of equal volume collected over a 24 hour period with
the time intervals between samples determined by a preset number of gallons passing the sampling point.Flow
measurement between sample intervals shall be determined by use of a flow recorder and totalizer,and the
preset gallon interval between sample collection fixed at no greater than 1/24 of the expected total daily flow at
the treatment system,or
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(4) Constant time/constant volume: a series of grab samples of equal volume collected over a 24-hour period at a
constant time interval.Use of this method requires prior approval by the Director. This method may only be
used in situations where effluent flow rates vary less than 15 percent.The following restrictions also apply:
➢ Influent and effluent grab samples shall be of equal size and of no less than 100 milliliters
➢ Influent samples shall not be collected more than once per hour.
➢ Permittees with wastewater treatment systems whose detention time<24 hours shall collect effluent grab
samples at intervals of no greater than 20 minutes apart during any.24-hour period.
➢ Permittees with wastewater treatment systems whose detention time exceeds 24 hours shall collect effluent
grab samples at least every six hours;there must be a minimum of four samples during a 24-hour sampling
period.
Continuous flow measurement
Flow monitoring that occurs without interruption throughout the operating hours of the facility. Flow shall be
monitored continually except for the infrequent times when there may be no flow or for infrequent maintenance
activities on the flow device.
Daily Discharge
The discharge of a pollutant measured during a calendar day or any 24-hour period that reasonably represents the
calendar day for purposes of sampling.For pollutants measured in units of mass,the "daily discharge"is calculated as
the total mass of the pollutant discharged over the day. For pollutants expressed in other units of measurement,the
"daily discharge"is calculated as the average measurement of the pollutant over the day. (40 CFR 122.2; see also
"Composite Sample,"above.)
Daily Maximum
The highest"daily discharge"during the calendar month.
Daily Sgmpling
Parameters requiring daily sampling shall be sampled 5 out of every 7 days per week unless otherwise specified in the
permit. Sampling shall be conducted on weekdays except where holidays or other disruptions of normal operations
prevent weekday sampling.If sampling is required for all seven days of the week for any permit parameter(s),that
requirement will be so noted on the Effluent Limitations and Monitoring Page(s).
DWQ or"the Division"
The Division of Water Quality,Department of Environment and Natural Resources.
Effluent
Wastewater discharged following all treatment processes from a water pollution control facility or other point source
whether treated or untreated.
EMC
The North Carolina Environmental Management Commission
EPA
The United States Environmental Protection Agency
Facility Closure
Cessation of all activities that require coverage under this NPDES permit. Completion of facility closure will allow this
permit to be rescinded.
Geometric Mean
The Nth root of the product of the individual values where N=the number of individual values.For purposes of
calculating the geometric mean,values of"0"(or"< [detection level]")shall be considered= 1.
Grab Sample
Individual samples of at least 100 mL collected over a period of time not exceeding 15 minutes. Grab samples can be
collected manually. Grab samples must be representative of the discharge(or the receiving stream,for instream
samples).
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Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the CWA.
Instantaneous flow measurement
The flow measured during the minimum time required for the flow measuring device or method to produce a result in
that instance. To the extent practical,instantaneous flow measurements coincide with the collection of any grab
samples required for the same sampling period so that together the samples and flow are representative of the discharge
during that sampling period.
Monthly Average(concentration limit)
The arithmetic mean of all"daily discharges" of a pollutant measured during the calendar month.In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Permit Issuing Authority
The Director of the Division of Water Quality.
Quarterly Average(concentration limit)
The arithmetic mean of all samples taken over a calendar quarter.
Severe property damage
Substantial physical damage to property,damage to the treatment facilities which causes them to become inoperable, or
substantial and permanent loss of natural resources which can reasonably be expected to occur in the absence of a
bypass. Severe property damage excludes economic loss caused by delays in production.
Toxic Pollutant:
Any pollutant listed as toxic under Section 307(a)(1)of the CWA.
Upset
An incident beyond the reasonable control of the Permittee causing unintentional and temporary noncompliance with
permit effluent limitations and/or monitoring requirements.An upset does not include noncompliance caused by
operational error,improperly designed treatment facilities,inadequate treatment facilities, lack of preventive
maintenance, or careless or improper operation.
Weekly Average concentration limit)
The arithmetic mean of all"daily discharges" of a pollutant measured during the calendar week.In the case of fecal
coliform or other bacterial parameters or indicators,the geometric mean of such discharges.
Section B. General Conditions
1. Duty to Comply
The Permittee must comply with all conditions of this permit.Any permit noncompliance constitutes a violation of
the CWA and is grounds for enforcement action;for permit termination,revocation and reissuance,or
modification; or denial of a permit renewal application[40 CFR 122.41].
a. The Permittee shall comply with effluent standards or prohibitions established under section 307(a)of the
CWA for toxic pollutants and with standards for sewage sludge use or disposal established under section
405(d)of the CWA within the time provided in the regulations that establish these standards or prohibitions or
standards for sewage sludge use or disposal,even if the permit has not yet been modified to incorporate the
requirement.
b. The CWA provides that any person who violates section[s] 301, 302, 306, 307,308, 318 or 405 of the Act, or
any permit condition or limitation implementing any such sections in a permit issued under section 402,or any
requirement imposed in a pretreatment program approved under sections 402(a)(3)or 402(b)(8)of the Act,is
subject to a civil penalty not to exceed$37,500 per day for each violation. [33 USC 1319(d)and 40 CFR
122.41(a)(2)]
c. The CWA provides that any person who negligently violates sections 301,302,306, 307, 308,318, or 405 of
the Act, or any condition or limitation implementing any of such sections in a permit issued under section 402
of the Act,or any requirement imposed in a pretreatment program approved under section 402(a)(3)or
402(b)(8)of the Act,is subject to criminal penalties of$2,500 to$25,000 per day of violation,or
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imprisonment of not more than 1 year, or both. In the case of a second or subsequent conviction for a negligent
violation,a person shall be subject to criminal penalties of not more than$50,000 per day of violation, or by
imprisonment of not more than 2 years,or both. [33 USC 1319(c)(1)and 40 CFR 122.41(a)(2)]
d. Any person who knowingly violates such sections, or such conditions or limitations is subject to criminal
penalties of$5,000 to$50,000 per day of violation,or imprisonment for not more than 3 years,or both.In the
case of a second or subsequent conviction for a knowing violation, a person shall be subject to criminal
penalties of not more than$100,000 per day of violation,or imprisonment of not more than 6 years, or both.
[33 USC 1319(c)(2)and 40 CFR 122.41(a)(2)]
e. Any person who knowingly violates section 301, 302,303,306,307,308,318 or 405 of the Act,or any permit
condition or limitation implementing any of such sections in a permit issued under section 402 of the Act,and
who knows at that time that he thereby places another person in imminent danger of death or serious bodily
injury, shall,upon conviction,be subject to a fine of not more than$250,000 or imprisonment of not more than
15 years, or both. In the case of a second or subsequent conviction for a knowing endangerment violation, a
person shall be subject to a fine of not more than$500,000 or by imprisonment of not more than 30 years,or
both.An organization,as defined in section 309(c)(3)(B)(iii)of the CWA,shall,upon conviction of violating
the imminent danger provision,be subject to a fine of not more than$1,000,000 and can be fined up to
$2,000,000 for second or subsequent convictions. [40 CFR 122.41(a)(2)]
f. Under state law, a civil penalty of not more than$25,000 per violation may be assessed against any person
who violates or fails to act in accordance with the terms,conditions,or requirements of a permit. [North
Carolina General Statutes § 143-215.6A]
g. Any person may be assessed an administrative penalty by the Administrator for violating section 301,3023
306,307, 308,318 or 405 of this Act,or any permit condition or limitation implementing any of such sections
in a permit issued under section 402 of this Act.Administrative penalties for Class I violations are not to
exceed$16,000 per violation,with the maximum amount of any Class I penalty assessed not to exceed
$37,500.Penalties for Class 11 violations are not to exceed$16,000 per day for each day during which the
violation continues,with the maximum amount of any Class 11 penalty not to exceed$177,500. [33 USC
1319(g)(2)and 40 CFR 122.41(a)(3)]
2. Duty to Mitigate
The Permittee shall take all reasonable steps to minimize or prevent any discharge or sludge use or disposal in
violation of this permit with a reasonable likelihood of adversely affecting human health or the environment[40
CFR 122.41(d)].
3. Civil and Criminal Liability
Except as provided in permit conditions on'Bypassing"(Part II.CA),"Upsets"(Part II.C.5)and"Power Failures"
(Part H.C.7),nothing in this permit shall be construed to relieve the Permittee from any responsibilities,liabilities,
or penalties for noncompliance pursuant to NCGS 143-215.3, 143-215.6 or Section 309 of the Federal Act,33 USC
1319.Furthermore,the Permittee is responsible for consequential damages, such as fish kills,even though the
responsibility for effective compliance may be temporarily suspended.
4. Oil and Hazardous Substance Liability
Nothing in this permit shall be construed to preclude the institution of any legal action or relieve the Permittee
from any responsibilities,liabilities, or penalties to which the Permittee is or may be subject to under NCGS 143-
215.75 et seq. or Section 311 of the Federal Act,33 USG 1321. Furthermore,the Permittee is responsible for
consequential damages, such as fish kills, even though the responsibility for effective compliance may be
temporarily suspended.
5. Property Rights
The issuance of this permit does not convey any property rights in either real or personal property,or any exclusive
privileges,nor does it authorize any injury to private property or any invasion of personal rights,nor any
infringement of Federal, State or local laws or regulations [40 CFR 122.41(g)].
6. Onshore or Offshore Construction
This permit does not authorize or approve the construction of any onshore or offshore physical structures or
facilities or the undertaking of any work in any navigable waters.
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7. Severability
The provisions of this permit are severable.If any provision of this permit,or the application of any provision of
this permit to any circumstances,is held invalid,the application of such provision to other circumstances,and the
remainder of this permit, shall not be affected thereby[NCGS 150B-23].
8. Duty to Provide Information
The Permittee shall furnish to the Permit Issuing Authority,within a reasonable time,any information which the
Permit lssuing Authority may request to determine whether cause exists for modifying,revoking and reissuing,or
terminating this permit or to determine compliance with this permit.The Permittee shall also furnish to the Permit
Issuing Authority upon request,copies of records required by this permit[40 CFR 122.41(h)].
9. Duty to Reapply
If the Permittee wishes to continue an activity regulated by this permit after the expiration date of this permit,the
Permittee must apply for and obtain a new permit[40 CFR 122.41(b)].
10. Expiration of Permit
The Permittee is not authorized to discharge after the expiration date. In order to receive automatic authorization to
discharge beyond the expiration date,the Permittee shall submit such information,forms,and fees as are required
by the agency authorized to issue permits no later than 180 days prior to the expiration date unless permission for a
later date has been granted by the Director. (The Director shall not grant permission for applications to be
submitted later than the expiration date of the existing permit.) [40 CFR 122.21(d)]Any Permittee that has not
requested renewal at least 180 days prior to expiration, or any Permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration,will subject the Permittee fo
enforcement procedures as provided in NCGS 143-215.6 and 33 USC 1251 et. seq.
11. Signatory Requirements
All applications,reports,or information submitted to the Peimit'Issuing Authority shall be'signed and certified[40
CFR 122.41(k)'].
a. All permit"applications shall be signed as follows:
(1) For a corporation: by a responsible corporate officer.For the purpose of this Section,a responsible
corporate officer means: (a)a president,secretary,treasurer or vice president of the corporation in charge
of a principal business function,or any other person who performs similar policy or decision making
functions for the corporation,or(b)the manager of one or more manufacturing,production,or operating
facilities,provided,the manager is authorized to,make management decisions which govern the operation
of the regulated facility including having the explicit or implicit duty of making major capital investment
recommendations,and initiating and directing other comprehensive measures to assure long term
environmental compliance with environmental'laws and regulations;the manager can ensure that the
necessary systems are established or actions taken to gather complete and accurate information for permit
application requirements; and where authority to sign documents has been assigned or delegated to the
manager in accordance with corporate procedures .
(2) For a partnership or sole proprietorship: by a general partner or the proprietor,respectively;or
(3) For a municipality, State,Federal,or other public agency: by either a principal executive officer or
ranking elected official[40 CFR 122.22].
b. All reports required by the permit and other information requested by the Permit Issuing Authority shall be
signed by a person described in paragraph a. above or by a duly authorized representative of that person.A
person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having responsibility for the overall operation
of the regulated facility or activity,such as the position of plant manager,operator of a well or well field,
superintendent,a position of equivalent responsibility,or an individual or position having overall
responsibility for environmental matters for the company. (A duly authorized representative may thus be
either a named individual or any individual occupying a named position.);and
(3) The written authorization is submitted to the Permit Issuing Authority[40 CFR 122.22]
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c. Changes to authorization: If an authorization under paragraph(b)of this section is no longer accurate because
a different individual or position has responsibility for the overall operation of the facility,a new authorization
satisfying the requirements of paragraph(b)of this section must be submitted to the Director prior to or
together with any reports,information,or applications to be signed by an authorized representative [40 CFR
122.22] .
d. Certification.Any person signing a document under paragraphs a. or b. of this section shall make the following
certification[40 CFR 122.221.NO OTHER STATEMENTS OF CERTIFICATION WILL BE ACCEPTED:
7 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."
12. Permit Actions
This permit may be modified,revoked and reissued, or terminated for cause.The filing of a request by the
Permittee for a permit modification,revocation and reissuance,or termination,or a notification of planned changes
or anticipated noncompliance does not stay any permit condition[40 CFR 122.41(f)].
13. Permit Modification,Revocation and Reissuance,or Termination
The issuance of this permit does not prohibit the permit issuing authority from reopening and modifying the permit,
revoking and reissuing the permit, or terminating the permit as allowed by the laws,rules, and regulations
contained in Title 40,Code of Federal Regulations,Parts 122 and 123;Title 15A of the North Carolina
Administrative Code, Subchapter 02H .0100; and North Carolina General Statute 143.215.1 et. al.
14. Annual Administering and Compliance Monitoring Fee Requirements
The Permittee must pay the annual administering and compliance monitoring fee within thirty days after being
billed by the Division.Failure to pay the fee in a timely manner in accordance with 15A NCAC 02H.0105(b)(2)
may cause this Division to initiate action to revoke the permit.
Section C. Operation and Maintenance of Pollution Controls
1. Certified Operator
Owners of classified water pollution control systems must designate operators,certified by the Water Pollution
Control System Operators Certification Commission(WPCSOCC),of the appropriate type and grade for the
system,and,for each classification must[T15A NCAC 08G.0201]:
a. designate one Operator In Responsible Charge(ORC)who possesses a valid certificate of the type and grade at
least equivalent to the type and grade of the system;
b. designate one or more Back-up Operator(s)in Responsible Charge(Back-up ORCs)who possesses a valid
certificate of the type of the system and no more than one grade less than the grade of the system,with the
exception of no backup operator in responsible charge is required for systems whose minimum visitation
requirements are twice per year; and
c. submit a signed completed"Water Pollution Control System Operator Designation Form"to the Commission
(or to the local health department for owners of subsurface systems)countersigned by the designated certified
operators, designating the Operator in Responsible Charge(ORC)and the Back-up Operator in Responsible
Charge(Back-up ORC):
(1) 60 calendar days prior to wastewater or residuals being introduced into a new system;or
(2) within 120 calendar days following:
➢ receiving notification of a change in the classification of the system requiring the designation of a new
Operator in Responsible Charge(ORC)and Back-up Operator in Responsible Charge(Back-up ORC)
of the proper type and grade;or
➢ a vacancy in the position of Operator in Responsible Charge(ORC)or Back-up Operator in
Responsible Charge(Back-up ORC).
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(3) within seven calendar days of vacancies in both ORC and Back-up ORC positions replacing or designating
at least one of the responsibilities.
The ORC of each Class I facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least weekly
➢ Comply with all other conditions of 15A NCAC 08G .0204.
The ORC of each Class H,III and IV facility(or the Back-up ORC,when acting as surrogate for the ORC)must:
➢ Visit the facility as often as is necessary to insure proper operation of the treatment system;the treatment
facility must be visited at least five days per week,excluding holidays
➢ Properly manage and document daily operation and maintenance of the facility
➢ Comply with all other conditions of 15A NCAC 08G.0204.
2. Proper Operation and Maintenance
The Permittee shall at all times properly operate and maintain all facilities and systems of treatment and control
(and related appurtenances)which are installed or used by the Permittee to achieve compliance with the conditions
of this permit.Proper operation and maintenance also includes adequate laboratory controls and appropriate quality
assurance procedures.This provision requires the Permittee to install and operate backup or auxiliary facilities only
when necessary to achieve compliance with the conditions of the permit[40 CFR 122.41(e)].
NOTE: Properly and officially designated operators are fully responsible for all proper operation and maintenance
of the facility,and all documentation required thereof,whether acting as a contract operator[subcontractor] or a
member of the Permittee's staff.
3. Need to Halt or Reduce not a Defense
It shall not be a.defense for a Permittee in an enforcement action that it would have been necessary to halt or
reduce the permitted activity in order to maintain compliance with the condition of this permit[40 CFR 122.41(c)].
4. Bypassing of Treatment Facilities
a. Bypass not exceeding limitations [40 CFR 122.41(m)(2)]
The Permittee may allow any bypass to occur which does not cause effluent limitations to be exceeded,but
only if it also is for essential maintenance to assure efficient operation. These bypasses are not subject to the
provisions of Paragraphs b.and c. of this section.
b. Notice[40 CFR 122.41(m)(3)]
(1) Anticipated bypass.If the Permittee knows in advance of the need for a bypass,it shall submit prior notice,
if possible at least ten days before the date of the bypass; including an evaluation of the anticipated quality
and effect of the bypass.
(2) Unanticipated bypass.The Permittee shall submit notice of an unanticipated bypass as required in Part
II.E.6. (24-hour notice).
c. Prohibition of Bypass
(1) Bypass from the treatment facility is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for bypass,unless:
(A) Bypass was unavoidable to prevent loss of life,personal injury or severe property damage;
(B) There were no feasible alternatives to the bypass,such as the use of auxiliary treatment facilities,
retention of untreated wastes or maintenance during normal periods of equipment downtime. This
condition is not satisfied if adequate backup equipment should have been installed in the exercise of
reasonable engineering judgment to prevent a bypass which occurred during normal periods of
equipment downtime or preventive maintenance; and
(C) The Permittee submitted notices as required under Paragraph b. of this section.
(2) Bypass from the collection system is prohibited and the Permit Issuing Authority may take enforcement
action against a Permittee for a bypass as provided in any current or future system-wide collection system
permit associated with the treatment facility.
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(3) The Permit Is Authority may approve an anticipated bypass,after considering its adverse effects,if
the Permit Issuing Authority determines that it will meet the three conditions listed above in Paragraph c.
(1)of this section.
5. Upsets
a. Effect of an upset[40 CFR 122.41(n)(2)1: An upset constitutes an affirmative defense to an action brought for
noncompliance with such technology based permit effluent limitations if the requirements of paragraph b. of
this condition are met.No determination made during administrative review of claims that noncompliance was
caused by upset,and before an action for noncompliance,is final administrative action subject to judicial
review.
b. Conditions necessary for a demonstration of upset:Any Permittee who wishes to establish the affirmative
defense of upset shall demonstrate,through properly signed,contemporaneous operating logs,or other relevant
evidence that:
(1)An upset occurred and that the Permittee can identify the cause(s)of the upset;
(2)The Permittee facility was at the time being properly operated;and
(3)The Permittee submitted notice of the upset as required in Part II.E.6.(b)of this permit.
(4)The Permittee complied with any remedial measures required under Part II.B.2. of this permit.
c. Burden of proof[40 CFR 122.41(n)(4)]: The Permittee seeking to establish the occurrence of an upset has
the burden of proof in any enforcement proceeding.
6. Removed Substances
Solids,sludges,filter backwash,or other pollutants removed in the course of treatment or control of wastewaters
shall be utilized/disposed of in accordance with NCGS 143-215.1 and in a manner such as to prevent any pollutant
from such materials from entering waters of the State or navigable waters of the United States except as permitted
by the Commission.The Permittee shall comply with all applicable state and Federal regulations governing the
disposal of sewage sludge,including 40 CFR 503, Standards for the Use and Disposal of Sewage Sludge;40 CFR
Part 258,Criteria For Municipal Solid Waste Landfills; and 15A NCAC Subchapter 2T,Waste Not Discharged To
Surface Waters.The Permittee shall notify the Permit Issuing Authority of any significant change in its sludge use
or disposal practices.
7. Power Failures
The Permittee is responsible for maintaining adequate safeguards(as required by 15A NCAC 02H.0124)to
prevent the discharge of untreated or inadequately treated wastes during electrical power failures either by means
of alternate power sources,standby generators or retention of inadequately treated effluent.
Section D. Monitoring and Records
1. Representative Sampling
Samples collected and measurements taken,as required herein,shall be representative of the permitted discharge.
Samples collected at a frequency less than daily shall be taken on a day and time that is representative of the
discharge for the period the sample represents.All samples shall be taken at the monitoring points specified in this
permit and,unless otherwise specified,before the effluent joins or is diluted by any other wastestream,body of
water,or substance.Monitoring points shall"not be changed without notification to and the approval of the Permit
Issuing Authority[40 CFR 122.410)].
2. Reporting
Monitoring results obtained during the previous month(s)shall be summarized for each month and reported on a
monthly Discharge Monitoring Report(DMR)Form(MR 1, 1.1,2,3)or alternative forms approved by the
Director,postmarked no later than the last calendar day of the month following the completed reporting period.
The first DMR is due on the last day of the month following the issuance of the permit or in the case of a new
facility, on the last day of the month following the commencement of discharge.Duplicate signed copies of these,
and all other reports required herein, shall be submitted to the following address:
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NC DENR/Division of Water Quality/Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
3. Flow Measurements
Appropriate flow measurement devices and methods consistent with accepted scientific practices shall be selected
and used to ensure the accuracy and reliability of measurements of the volume of monitored discharges.The
devices shall be installed, calibrated and maintained to ensure that the accuracy of the measurements is consistent
with the accepted capability of that type of device. Devices selected shall be capable of measuring flows with a
maximum deviation of less than 10%from the true discharge rates throughout the range of expected discharge
volumes. Flow measurement devices shall be accurately calibrated at a minimum of once per year and maintained
to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device.
The Director shall approve the flow measurement device and monitoring location prior to installation.
Once-through condenser cooling water flow monitored by pump logs,or pump hour meters as specified in Part I of
this permit and based,on the manufacturer's pump curves shall not be subject to this requirement.
4. Test Procedures
Laboratories used for sample analysis must be certified by the Division.Permittees should contact the Division's
Laboratory Certification Section(919 733-3908 or http://portal.ncdenr.org/web/wq/lab/cert)for information
regarding laboratory certifications.
Facilities whose personnel are conducting testing of field-certified parameters only must hold the appropriate field
parameter laboratory certifications.
Test procedures for the analysis of pollutants shall conform to the EMC regulations(published pursuant to NCGS
143-215.63 et. seq.),the Water and Air Quality Reporting Acts, and to regulations published pursuant to Section
304(g),33 USC'1314,of the CWA(as amended), and 40 CFR 136; or in the case of sludge use or disposal,
approved under 40 CFR 136,unless otherwise specified in 40 CFR 503,unless other test procedures have been
specified in this permit[40 CFR 122.41].
To meet the intent of the monitoring required by this permit,all test procedures must produce minimum detection
and reporting levels that are below the permit discharge requirements and all data generated must be reported down
to the minimum detection or lower reporting level of the procedure. If no approved methods are determined
capable of achieving minimum detection and reporting levels below permit discharge requirements,then the most
sensitive(method with the lowest possible detection and reporting level)approved method must be used.
5. Penalties for Tampering
The CWA provides that any person who falsifies,tampers with,or knowingly renders inaccurate,any monitoring
device or method required to be maintained under this permit shall,upon conviction,be punished by a fine of not
more than$10,000 per violation,or by imprisonment for not more than two years per violation,or by both.If a
conviction of a person is for a violation committed after a first conviction of such person under this paragraph,
punishment is a fine of not more than$20,000 per day of violation, or by imprisonment of not more than 4 years,
or both[40 CFR 122.41].
6. Records Retention
Except for records of monitoring information required by this permit related to the Permittee's sewage sludge use
and disposal activities,which shall be retained for a period of at least five years(or longer as required by 40 CFR
503),the Permittee shall retain records of all monitoring information,including:
➢ all calibration and maintenance records
➢ all original strip chart recordings for continuous monitoring instrumentation
➢ copies of all reports required by this permit
➢ copies of all data used to complete the application for this permit
These records or copies shall be maintained for a period of at least 3 years from the date of the sample,
measurement,report or application.This period may be extended by request of the Director at any time [40 CFR
122.411.
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7. Recording Results
For each measurement or sample taken pursuant to the requirements of this permit,the Permittee shall record the
following information[40 CFR 122.41]:
a. The date,exact place, and time of sampling or measurements;
b. The individual(s)who performed the sampling or measurements;
c. The date(s)analyses were performed;
d. The individual(s)who performed the analyses;
e. The analytical techniques or methods used; and
f. The results of such analyses.
8. Inspection and Entry
The Permittee shall allow the Director,or an authorized representative(including an authorized contractor acting as
a representative of the Director),upon the presentation of credentials and other documents as may be required by
law,to;
a. Enter, at reasonable times,upon the Permittee's premises where a regulated facility or activity is located or
conducted,or where records must be kept under the conditions of this permit;
b. Have access to and copy,at reasonable times, any records that must be kept under the conditions of this permit;
c. Inspect at reasonable times any facilities,equipment(including monitoring and control equipment),practices,
or operations regulated or required under this permit; and
d. Sample or monitor at reasonable times,for the purposes of assuring permit compliance or as otherwise
authorized by the CWA,any substances or parameters at any location[40 CFR 122.41(i)].
Section E Reporting Requirements
1. Change in Discharge
All discharges authorized herein shall be consistent with the terms and conditions of this permit.The discharge of
any pollutant identified in this permit more frequently than or at a level in excess of that authorized shall constitute
a violation of the permit.
2. Planned Changes
The Permittee shall give notice to the Director as soon as possible of any planned physical alterations or additions
to the permitted facility[40 CFR 122.41(1)] Notice is required only when:
a. The alteration or addition to a permitted facility may meet one of the criteria for new sources at 40 CFR
122.29(b);or
b. The alteration or addition could significantly change the nature or increase the quantity of pollutants
discharged.This notification applies to pollutants subject neither to effluent limitations in the permit,nor to
notification requirements under 40 CFR 122.42(a)(1); or
c. The alteration or addition results in a significant change in the Permittee's sludge use or disposal practices,and
such alteration,addition or change may justify the application of permit conditions that are different from or
absent in the existing permit,including notification of additional use or disposal sites not reported during the
permit application process or not reported pursuant to an approved land application plan.
3. Anticipated Noncompliance
The Permittee shall give advance notice to the Director of any planned changes to the permitted facility or other
activities that might result in noncompliance with the permit[40 CFR 122.41(1)(2)].
4. Transfers
This permit is not transferable to any person without prior written notice to and approval from the Director in
accordance with 40 CFR 122.61. The Director may condition approval in accordance with NCGS 143-215.1,in
particular NCGS 143-215.1(b)(4)b.2.,and may require modification or revocation and reissuance of the permit,or
a minor modification,to identify the new permittee and incorporate such other requirements as may be necessary
under the CWA[40 CFR 122.41(1)(3), 122.61] or state statute.
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5. Monitoring Reports
Monitoring results shall be reported at the intervals specified elsewhere in this permit[40 CFR 122.41(1)(4)].
a. Monitoring results must be reported on a Discharge Monitoring Report(DMR)(See Part II.D.2)or forms
provided by the Director for reporting results of monitoring of sludge use or disposal practices.
b. If the Permittee monitors any pollutant more frequently than required by this permit using test procedures
approved under 40 CFR Part 136 and at a sampling location specified in this permit or other appropriate
instrument governing the discharge,the results of such monitoring shall be included in the calculation and
reporting of the data submitted on the DMR.
6. Twenty-four Hour Reporting
a. The Permittee shall report to the Director or the appropriate Regional Office any noncompliance that
potentially threatens public health or the environment.Any information shall be provided orally within 24
hours from the time the Permittee became aware of the circumstances.A written submission shall also be
provided within 5 days of the time the Permittee becomes aware of the circumstances.The written submission
shall contain a description of the noncompliance,and its cause;the period of noncompliance,including exact
dates and times,and if the noncompliance has not been corrected,the anticipated time it is expected to
continue;and steps taken or planned to reduce, eliminate,and prevent reoccurrence of the noncompliance [40
CFR 122.41(1)(6)].
b. The Director may waive the written report on a case-by-case basis for reports under this section if the oral
report has been received within 24 hours.
c. Occurrences outside normal business hours may also be reported to the Division's Emergency Response
personnel at(800)662-7956,[phone] or(919)733-3300.
7. Other Noncompliance
The Permittee shall report all instances of noncompliance notreported under Part H.E.5 and 6. of this permit at the
time monitoring reports are submitted. The reports shall contain the information listed in Part ILE.6. of this permit
[40 CFR 122.41(l)(7)].
8. Other Information
Where the Perrrlittee becomes aware that it failed to submit any relevant facts in a permit application,or submitted
incorrect information in a permit application or in any report to the Director,it shall promptly submit such facts or
information[40 CFR 122.41(l)(8)].
9. Noncompliance Notification
The Permittee shall report by telephone to either the central office or the appropriate regional office of the Division
as soon as possible,but in no case more than 24 hours or on the next working day following the occurrence or first
knowledge of the occurrence of any�of the following:
a. Any occurrence at the water pollution control facility which results in the discharge of significant amounts of
wastes which are abnormal in quantity or characteristic,such as the dumping of the contents of a sludge
digester;the known passage of a slug of hazardous substance through the facility;or any other unusual
circumstances.
b. Any process unit failure,due to known or unknown reasons,that render the facility incapable of adequate
wastewater treatment such as mechanical or electrical failures of pumps, aerators,compressors,etc.
c. Any failure of a pumping station, sewer line,or treatment facility resulting in a by-pass without treatment of all-
or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report within 5 days following first
knowledge of the occurrence.Also see reporting requirements for municipalities in Part IV.C.2.c. of this permit.
10. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3 (a)(2)or Section 308 of the Federal Act,33
USC 1318,all reports prepared in accordance with the terms shall be available for public inspection at the offices
of the Division.As required by the Act,effluent data shall not be considered confidential. Knowingly making any
false statement on any such report may result in the imposition of criminal penalties as provided for in NCGS 143-
215.1(b)(2)or in Section 309 of the Federal Act.
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11. Penalties for Falsification of Reports
The CWA provides that any person who knowingly makes any false statement,representation, or certification in
any record or other document submitted or required to be maintained under this permit,including monitoring
reports or reports of compliance or noncompliance shall,upon conviction,be punished by a fine of not more than
$25,000 per violation, or by imprisonment for not more than two years per violation,or by both[40 CFR 122.41].
12. Annual Performance Reports
Permittees who own or operate facilities that collect or treat municipal or domestic waste shall provide an annual
report to the Permit Issuing Authority and to the users/customers served by the Permittee(NCGS 143-215.1 C).The
report shall summarize the performance of the collection or treatment system, as well as the extent to which the
facility was compliant with applicable Federal or State laws,regulations and rules pertaining to water quality.The
report shall be provided no later than sixty days after the end of the calendar or fiscal year, depending upon which
annual period is used for evaluation.
The report shall be sent to:
NC DENR/Division of Water Quality/Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
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PART III
OTHER REQUIREMENTS
Section A. Construction
a. The Permittee shall not commence construction of wastewater treatment facilities,nor add to the plant's treatment
capacity,nor change the treatment process(es)utilized at the treatment plant unless(1)the Division has issued an
Authorization to Construct(AtC)permit or(2)the Permittee is exempted from such AtC permit requirements
under Item b. of this Section.
b. In accordance with NCGS 143-215.1(a5) [SL 2011-394],no permit shall be required to enter into a contract for the
construction,installation, or alteration of any treatment work or disposal system or to construct,install,or alter any
treatment works or disposal system within the State when the system's or work's principle function is to conduct,
treat,equalize,neutralize,stabilize,recycle,or dispose of industrial waste or sewage from an industrial facility and
the discharge of the industrial waste or sewage is authorized under a permit issued for the discharge of the
industrial waste or sewage into the waters of the State. Notwithstanding the above,the permit issued for the
discharge may be modified if required by federal regulation.
c. Issuance of an AtC will not occur until Final Plans and Specifications for the proposed construction have been
submitted by the Permittee and approved by the Division.
Section B. Groundwater Monitoring
The Permittee shall,upon written notice from the Director,conduct groundwater monitoring as may be required to
determine the compliance of this NPDES permitted facility with the current groundwater standards.
Section C. Changes in Discharges of Toxic Substances
The Permittee shall notify the Permit Issuing Authority as soon as it knows or has reason to believe(40 CFR 122.42):
a. That any activity has occurred or will occur which would result in the discharge,on a routine or frequent basis,of
any toxic pollutant which is not limited in the permit,if that discharge will exceed the highest of the following
"notification levels';
(1) One hundred micrograms per liter(100 µg/L);
(2) Two hundred micrograms per liter(200 µg/L)for acrolein and acrylonitrile;five hundred micrograms per liter
(500 µg/L)for 2,4-dinitrophenol and for 2-methyl-4,6-dinitrophenol; and one milligram per liter(1 mg/L)for
antimony;
(3) Five times the maximum concentration value reported for that pollutant in the permit application.
b. That any activity has occurred or will occur which would result in any discharge,on a non-routine or infrequent
basis,of a toxic pollutant which is not limited in the permit,.if that discharge will exceed the highest of the
following"notification levels";
(1) Five hundred micrograms per liter(500 µg/L);
(2) One milligram per liter(1 mg/L)for antimony;
(3) Ten times the maximum concentration value reported for that pollutant in the permit application.
Section D. Facility Closure Requirements
The Permittee must notify the Division at least 90 days prior to the closure of any wastewater treatment system covered
by this permit. The Division may require specific measures during deactivation of the system to prevent adverse
impacts to waters of the State. This permit cannot be rescinded while any activities requiring this permit continue at the
permitted facility.
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PART IV
SPECIAL CONDITIONS FOR MUNICIPAL FACILITIES
Section A. Definitions
In addition to the definitions in Part II of this permit,the following definitions apply to municipal facilities:
Indirect Discharge or Industrial User
Any non-domestic source that discharges wastewater containing pollutants into a POTW regulated under section
307(b),(c)or(d)of the CWA. [40 CFR 403.3 (i)and 0)and 15A NCAC 02H.0903(b)(11)]
Interference
Inhibition or disruption of the POTW treatment processes; operations;or its sludge process,use,or disposal which
causes or contributes to a violation of any requirement of the Permittee's(or any satellite POTW's if different from the
Permittee)NPDES, collection system,or non-discharge permit or prevents sewage sludge use or disposal in
compliance with specified applicable State and Federal statutes,regulations, or permits. [15A NCAC 02H
.0903(b)(14)]
Pass Through
A discharge which exits the POTW into waters of the State in quantities or concentrations which,alone or with
discharges from other sources,causes a violation,including an increase in the magnitude or duration of a violation, of
the Permittee's(or any satellite POTW's,if different from the Permittee)NPDES,collection system,or non-discharge
permit. [15A NCAC 02H.0903(b)(23)]
Publicly Owned Treatment Works(POTW)
A treatment works as defined by Section 212 of the CWA,which is owned by a State or local government organization.
This definition includes any devices and systems used in the storage,treatment,recycling and reclamation of municipal
sewage or industrial wastes of a liquid nature.It also includes the collection system,as defined in 15A NCAC 2T
.0402,only if it conveys wastewater to a POTW treatment plant.The term also means the local government
organization,or municipality, as defined in section 502(4)of the CWA,which has jurisdiction over indirect discharges
to and the discharges from such a treatment works.In this context,the organization may be the owner of the POTW
treatment plant or the owner of the collection system into which an indirect discharger discharges. This second type of
POTW may be referred to as a"satellite POTW organization." [15A NCAC 02H.0903(b)(26)]
"Significant Industrial User" or"SIU"
An Industrial User that discharges wastewater into a publicly owned treatment works and that[15A NCAC 02H
.0903(b)(33)]: `
1. Discharges an average of 25,000 gallons per day or more of process wastewater to the POTW(excluding sanitary,
noncontact cooling and boiler blowdown wastewaters);or
2. Contributes process wastewater which makes up five percent or more of the NPDES or non-discharge permitted
flow limit or organic capacity of the POTW treatment plant.In this context,organic capacity refers to BOD,TSS
and ammonia; or
3. Is subject to categorical standards under 40 CFR Part 403.6 and 40 CFR Parts 405-471;or
4. Is designated as such by the Permittee on the basis that the Industrial User has a reasonable potential for adversely
affecting the POTW's operation or for violating any pretreatment standard or requirement,or the POTW's effluent
limitations and conditions in its NPDES or non-discharge permit, or to limit the POTW's sludge disposal options;
5. Subject to approval under 15A NCAC 02H.0907(b),the Permittee may determine that an Industrial User meeting
the criteria in paragraphs 1 or 2 of this definition above has no reasonable potential for adversely affecting the
POTW's operation or for violating any pretreatment standard or requirement,the POTW's effluent limitations and
conditions in its NPDES or non-discharge permit, or to limit the POTW's sludge disposal options,and thus is not a
Significant Industrial User(SILT); or
6. Subject to approval under 15A NCAC 02H .0907(b),the Permittee may determine that an Industrial User meeting
the criteria in paragraph 3 of this definition above meets the requirements of 40 CFR Part 403.3(v)(2)and thus is a
non-significant categorical Industrial User.
Section B. Publicly Owned Treatment Works(POTWs)
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All POTWs must provide adequate notice to the Director of the following [40 CFR 122.42(b)]:
1 Any new introduction of pollutants into the POTW from an indirect discharger,regardless of the means of
transport,which would be subject to section 301 or 306 of CWA if it were directly discharging those pollutants;
and
2. Any substantial change in the volume or character of pollutants being introduced by an indirect discharger as
influent to that POTW at the time of issuance of the permit.
3. For purposes of this paragraph,adequate notice shall include information on(1)the quality and quantity of effluent
introduced into the POTW,and(2)any anticipated impact that may result from the change of the quantity or
quality of effluent to be discharged from the POTW. -
Section C. Municipal Control of Pollutants from Industrial Users.
1. Effluent limitations are listed in Part I of this permit. Other pollutants attributable to inputs from Industrial Users
discharging to the POTW may be present in the Permittee's discharge.At such time as sufficient information
becomes available to establish limitations for such pollutants,this permit may be revised to specify effluent
limitations for any or all of such other pollutants in accordance with best practicable technology or water quality
standards.
2. Prohibited Discharges
a. The Permittee shall develop and enforce their Pretreatment Program to.implement the prohibition against the
introduction of pollutants or discharges into the waste treatment system or waste collection system which
cause or contribute to Pass Through or Interference as defined in 15A NCAC 02H 0900 and 40 CFR 403. [40
CFR 403.5(a)(1)]
b. The Permittee shall develop and enforce their Pretreatment Program to implement the prohibitions against the
introduction of the following wastes in the waste treatment or waste collection system[40 CFR 403.5(b)]:
(1) Pollutants which create a fire or explosion hazard in the POTW,including,but not limited to,
wastestreams with a closed cup flashpoint of less than 140 degrees Fahrenheit or 60 degrees Centigrade
using the test methods specified in 40 CFR 261.21;
(2) Pollutants which cause corrosive structural damage to the POTW,but in no case discharges with pH lower
than 50,unless the works is specifically designed to accommodate such discharges;
(3) Solid or viscous pollutants in amounts which cause obstruction to the flow in the POTW resulting in
Interference;
(4) Any pollutant,including oxygen demanding pollutants(BOD,etc.)released in a Discharge at a flow rate
and/or pollutant concentration which will cause Interference with the POTW;
(5) Heat in amounts which will inhibit biological activity in the POTW resulting in Interference,but in no
case heat in such quantities that the temperature at the POTW Treatment Plant exceeds 40°C(104°F)
unless the Division,upon.request of the POTW,approves alternate temperature limits;
(6) Petroleum oil,non-biodegradable cutting oil,or products of mineral oil origin in amounts that will cause
Interference or Pass Through;
(7) Pollutants which result in the presence of toxic gases,vapors,or fumes within the POTW in a quantity that
may cause acute worker health and safety problems;or
(8) Any trucked or hauled pollutants,except at discharge points designated by the POTW.
c. The Permittee shall investigate the source of all discharges into the POTW,including slug loads and other
unusual discharges,which have the potential to adversely impact the Permittee's Pretreatment Program and/or
the operation of the POTW.
The Permittee shall report such discharges into the POTW to the Director or the appropriate Regional Office.
Any information shall be provided orally within 24 hours from the time the Permittee became aware of the
circumstances.A written submission shall also be provided within 5 days of the time the Permittee becomes
aware of the circumstances. The written submission shall contain a description of the discharge;the
investigation into possible sources;the period of the discharge,including exact dates and times;if the
discharge has not ceased,the anticipated tiime"it is expected to continue;and steps taken or planned to reduce,
eliminate,and prevent reoccurrence of the noncompliance,
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3. With regard to the effluent requirements listed in Part I of this permit,it may be necessary for the Permittee to
supplement the requirements of the Federal Pretreatment Standards(40 CFR,Part 403)to ensure compliance by
the Permittee with all applicable effluent limitations. Such actions by the Permittee may be necessary regarding
some or all of the industries discharging to the municipal system.
4. The Permittee shall require any Industrial User(IU)discharging to the POTW to meet Federal Pretreatment
Standards developed under Section 307(b)of the Act as amended(which includes categorical standards and
specific local limits,best management practices and narrative requirements).Prior to accepting wastewater from
any Significant Industrial User(SIU),the Permittee shall either develop and submit to the Division a new
Pretreatment Program or,as necessary,a modification of an existing Pretreatment Program,for approval as
required under section D below as well as 15A NCAC 02H.0907(a)and(b). [40 CFR 122.440)(2)]
5. This permit shall be modified, or alternatively,revoked and reissued,to incorporate or modify an approved POTW
Pretreatment Program or to include a compliance schedule for the development of a POTW Pretreatment Program
as required under Section 402(b)(8)of the CWA and implementing regulations or by the requirements of the
approved State pretreatment program, as appropriate.
Section D. Pretreatment ProjZrams
Under authority of sections 307(b)and(c)and 402(b)(8)of the CWA and implementing regulations 40 CFR 403,
North Carolina General Statute 143-215.3(14)and implementing regulations 15A NCAC 02H .0900,and in accordance
with the approved pretreatment program,all provisions and regulations contained and referenced in the pretreatment
program submittal are an enforceable part of this permit. [40 CFR 122.440)(2)]
The Permittee shall operate its approved pretreatment program in accordance with Section 402(b)(8)of the CWA,40
CFR 403, 15A NCAC 02H.0900,and the legal authorities,policies,procedures,and financial provisions contained in
its pretreatment program submission and Division approved modifications thereof. Such operation shall include but is
not limited to the implementation of the following conditions and requirements. Terms not defined in Part II or Part IV
of this permit are as defined in 15A NCAC 02H.0903 and 40 CFR 403.3.
1. Sewer Use Ordinance(SUO)
The Permittee shall maintain adequate legal authority to implement its approved pretreatment program. [15A
NCAC 02H .0903(b)(32), .0905 and.0906(b)(1);40 CFR 403.8(f)(1)and 403.9(b)(1)and(2)]
2. Industrial Waste Survey(IWS)
The Permittee shall implement an IWS consisting of the survey of users of the POTW collection system or
treatment plant, as required by 40 CFR 403.8(f)(2)(i-iii)and 15A NCAC 02H.0905 [also 40 CFR 122.440)(1)],
including identification of all Industrial Users that may have an impact on the POTW and the character and amount
of pollutants contributed to the POTW by these Industrial Users and identification of those Industrial Users
meeting the definition of SIU.Where the Permittee accepts wastewater from one or more satellite POTWs,the
IWS for the Permittee shall address all satellite POTW services areas,unless the pretreatment program in those
satellite service areas is administered by a separate Permittee with an approved Pretreatment Program.The
Permittee shall submit a summary of its IWS activities to the Division at least once every five years,and as
required by the Division.The IWS submission shall include a summary of any investigations conducted under
paragraph C.2.c. of this Part. [15A NCAC 02H .0903(b)(13), .0905 and.0906(b)(2);40 CFR 403.8(f)(2)and 403.91
3. Monitoring Plan
The Permittee shall implement a Division-approved Monitoring Plan for the collection of facility specific data to
be used in a wastewater treatment plant Headworks Analysis(HWA)for the development of specific pretreatment
local limits.Effluent data from the Plan shall be reported on the DMRs(as required by Parts H.D and H.E.5.). [15A
NCAC 02H.0903(b)(16), .0906(b)(3)and.0905]
4. Headworks Analysis HWA)and Local Limits
The Permittee shall obtain Division approval of a HWA at least once every five years, and as required by the
Division.Within 180 days of the effective date of this permit(or any subsequent permit modification)the
Permittee shall submit to the Division a written technical evaluation of the need to revise local limits(i.e., an
updated HWA or documentation of why one is not needed) [40 CFR 122.44].The Permittee shall develop,in
accordance with 40 CFR 403.5(c)and 15A NCAC 02H.0909,specific Local Limits to implement the prohibitions
listed in 40 CFR 403.5(a)and(b)and 15A NCAC 02H.0909.Pursuant to 40 CFR 403.5,local limits are
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enforceable Pretreatment Standards as defined by 40 CFR 403.3(1). [15A NCAC 02H.0903(b)(10)3 .0905,and
.0906(b)(4)]
5'. Industrial User Pretreatment Permits(IUP)&Allocation Tables
In accordance with NCGS 143-215.1,the Permttee shall issue to all Significant Industrial Users;,permits for
operation of.pretreatment equipment,and discharge to.the Permittee's collection system or,treatment works'. These
permits shall contain limitations,sampling protocols,reporting requirements,appropriate standard and special
conditions,and compliance schedules as necessary for the installation of treatment and control technologies to
assure that their wastewater discharge will meet all applicable pretreatment standards and requirements. The
Permittee shall maintain a current Allocation Table(AT)which summarizes the results of the 14WA and the limits
from all IUPs.Permitted I'UP loadings for each parameter cannot exceed'the treatment capacity of the POTW as
determined by the HWA. [15A NCAC 02H.0906(b)(6), .0909, .0916,and .0917;40 CFR 403.5,403.8(f)(1)(iii)
NCGS 143-215.67(a)]
6. Authorization to Construct(AtC)
The.Permittee shall ensure that an Authorization to Construct,permit(AtC)is.issued to all applicable Industrial
Users for the construction or modification of any pretreatment facility.Prior to the issuance of an AtC',the
proposed;pretreatment facility and treatment process must be evaluated for its capacity to comply with all
Industrial'User Pretreatment Permit(IUP)limitations. [15A NCAC 02H.0906(b)(7)and.0905;NCGS 143-
215.1(a)(8)]
7. POTW Inspection&Monitoring of their IUs
The Permittee shall conduct inspection,surveillance,and monitoring activities as described in its:Division
approved pretreatment program in order to determine;independent of information supplied by Industrial Users,
compliance- with applicable pretreatment standards. [15A NCAC 02H.0908(e);40 CFR 403.8(f)(2)(v)] The
Permittee must:
a. Inspect all Significant Industrial Users(SIUs)at least once per calendar year;
b. 'Sample all Significant Industrial Users(SIUs)at least once per calendar year for all SIU permit-limited
parameters.including flow except as allowed under 15A NCAC.0908(e);and.
c. At least once per year,document an evaluation of any nonsignificant categorical Industrial User for
compliance with the requirements in 40 CFR 403`.3(v)(2),and either continue or revoke the designation as non-
significant.
8. IU Self Monitoring,and Reporting.
The Permittee shall require all Industrial Users to comply with the applicable;monitoring and reporting
requirements outlined in the Division-approved,pretreatment program,the industry's pretreatment permit,or in 1°5A
NCAC 02H.0908. [15A NCAC 02H.0906(b)(5)and.0905;4:0 CFR 403.8(f)(1)(v)and(2)(iii);40 CFR
122.440)(2)and 40 CFR 403.12]
9. Enforcement Response Plan(ERP)
The;Permittee shall enforee and obtain appropriate remedies for violations of all pretreatment standards
promulgated pursuant to section 307(b)and(c)of the CWA(40 CFR 405 et.seq.),prohibitive discharge standards
as set forth in 40 CFR 403.5 and 15A NCAC 02H.0909,specific local limitations,and other pretreatment
requirements.All remedies, enforcement actions and other, shall be consistent with the Enforcement Response
Plan(ERP)approved by the Division. [15A NCAC 02H.0903(b)(7), .0906(b)(8)and.0905;40 CFR 4018(f)(5)]
10. Pretreatment Annual Reports(PAR)
The;Permittee shall report to the Division in accordance with 15A NCAC 02H.0908.In lieu of submitting annual
reports,Modified Pretreatment Programs developed under 15A NCAC 02H .0904('b)may be required to submit a.
partial annual report or to meet with Division personnel periodically to discuss enforcement of pretreatment
requirements and other pretreatment implementation issues:
For all other active pretreatment programs,the Permittee shall submit two copies of a Pretreatment Annual Report.
(PAR)describing_ its pretreatment activities over the previous calendar year to the.Division at the following
address:
0
Version 1110912011'

PDES Permit Standard Conditioni
Page 18 of 18
NC DENR/Division of Water Quality/Surface Water Protection Section
Pretreatment,Emergency Response,and Collection Systems,(PERCS)Unit
1617 Mail Service Center
Raleigh,North Carolina 27699-1617'
These reports,shall be submitted by March I of each year and shall contain the following:
a. Narrative
A narrative summary detailing actions taken,or proposed,by the Permittee to correct significant non-
compliance and to ensure compliance with pretreatment requirements;
b., Pretreatment Program Sgmmaa(PPS)
A pretreatment program summary,(PPS)on forms or in a format provided by the Division;
c. Significant Non-Compliance Report(SNCRj
A list of Industrial Users(IUs),in significant noncompliance(SNC)with pretreatment requirements,and the
nature of the violations on forms or in a format provided by the Division;
d. Industrial Data 511�a Forms(IDSLF)
Monitoring data from samples collected by both the POTW and the Significant Industrial Users(SIUs).These
analytical results must be reported on Industrial Data Summary Forms(IDSF)or on other forms or in a format
provided by the Division-,
,e. Other Information
Copies of the POTW's allocation table,new or modified enforcement compliance schedules,public notice of
lUs in SNC,a summary of data or other information related to significant noncompliance determinations for
lUs that are not considered SlUs,'and any other information,upon request,which in the opinion of the Director
,is needed to determine,compliance with the pretreatment implementation requirements of this.permit;
11. Public Notice
The Permittee shall publish annually a list of Industrial Users(IUs)that were in significant noncompliance,(SNC)
as defined in the Pennittec's Division-approved Sewer Use Ordinance with applicable pretreatment requirements
and standards during the previous twelve month period.This list shall be published within four months,of the
applicable twelve-month period. [15A NCAC 02H .0903(b)(34),, .0908(b)(5)and.0905 and 40 CFR
403.8(f)(2)(Viii)]
12. Record Keeping
The Permittee shall retain for a minimum of three years records of monitoring activities and results,along with
,support information including,general records,,water quality records,and records of industrial impact on the
POTW and shall retain all other Pretreatment Program records as required by 15A NCAC 02H .0908(f)J1 5A
NCAC 02H.0908(f);40 CFR 403.12(o)]
13. Pretreatment,Program Resources
The Permittee shall maintain adequate funding and qualified personnel to accomplish the objectives of its approved
pretreatment program. and retain a written description of those current,levels of inspection. [15A NCAC 02H
.0906(b)(9)and(10),and.0905;40 CFR 403.8(f)(3),403.9(b)(3)]i
14. Modification to Pretreatment Programs
Modifications to the approved pretreatment program including but not limited to local limits modifications,POTW
monitoring of their Significant Industrial Users(SlUs),and Monitoring Plan modifications, shall be considered a
permit modification and shall be,governed by 40:CFR,403.18, 15 NCAC 02H .01 14and 15A NCAC 0211.0907.
Version 1110912011

Facility name: Unimin Corporation
Permits: WWTP locations: Plant Mqrs/ORC: Telephone #s:
NCO084620 Crystal Operation Sandra Phillips 828-765-1114 x 16
Mitchell Co. Denny Buchanan 828-765-1114 x 21
Jeff Ferguson, PE 828-765-1114 x 13
NC0000361 Schoolhouse Quartz - Mike Vencil 828-765-4251 x 303
Avery Co. 1N Cott-Fehrier Ve 828-765-4251 x 310
NC000000175 Quartz/Feldspar Doug Myers 828-765-4283 x 1005
Mitchell Co. , e���r^0, Steve Wilson, ORC & Env Aff Supv
A-).m � � - Brian McNeil Qjjzl
-W q'J-94
NCO085839 Red Hill Quartz - J s;Wa 828-688-9213 x 246-Z
Mitchell Co. 'Z,
Facility information
NPDES permit #: NC0000361 Avery County
Facility name: Unimin Corporation - Schoolhouse Quartz
Extraction and mineral processing
production facility which produces high
purity quartz -
CONFIDENTIAL processes & technology
Primary SIC: 1459 high purity quartz
WWTP class: PC - II
WWTP type: 2.16 MGD mining and material processing plant
consisting of
The WWTP consists of dewatering cyclones;
surge tank; two flocculation/mix reactor tanks
with; lime feed system (lime [calcium hydroxide -
Ca(OH)2] slurry tank with 2 agitators); polymer
feed system (lime & acrylamide Drewfloc 2270
anionic polymer and cationic polymer); 60 ft and

l
80 ft diameter circular thickeners; Eimco Process
Equipment Company ® 600 sq ft disc vacuum
filter with 125 gpm filtrate pump, 2650 cfm
vacuum pump & 40 Hp blower; pan filters;
chemical pH adjustment using sodium
bicarbonate (Na2 CO3) and (rarely used) sulfuric
acid (H2SO4); pH analyzer; continuous flow
recorder and totalizer; and emergency holding
pond.
Note: The plant is surrounded by a series of
tailings/sedimentation ponds.
A to C: Authorization to Construct issued 6-30-2010 for
new disc vacuum filter with 125 gpm filtrate
pump, 2650 cfm vacuum pump & 40 Hp blower.
A to C: Authorization to Construct issued 3-23-2001 for
new 220 gal flash mix unit, 1280 gal floc unit &
2500 sq ft lamellar-flow plate separator (clarifier).
Annual Average Flow: MGD (3 year average flow: 2007-2010)
Responsible officials: Andrew D. Bradley
Responsible " 's title: Senior Vice-President, Environmental Affairs
Official's location: Unimin Corporation
258 Elm Street; New Canaan, Connecticut 06840
Engineer: Jeffrey S. Ferguson, P.E.
Environmental Engineer (covers several states)
@ Crystal Operation
Facility location: US Hwy 19 E; Spruce Pine NC 28777
Mailing address: PO Box 588; Spruce Pine, NC 28777
Phone numbers
203-966-8880 Andrew D Bradley, Unimin Corp. — VP / owner
828-765-4283 Karl Kutchta (kut"-ta) - Reg Gen Mgr
828-765-4251 x 303 Mike Vencil — Plant Manager
828-765-4251 x 310 Scott Fortner - ORC
828-765-1114 x 13 Jeff Ferguson. P.E. — @ Crystal Op - Engineer
828-765-4755 fax "

Operator information
WWTP ORC: Larry Scott Fortner— Cert. # 28908 — PC - II
WWTP back-up ORC: Kevin Perkins — Cert. # 28623 — PC — II
Permit information
Date issued: 11-1-2006
Expiration date: 2-28-2011
Appl rcvd: 9-1-2010
Currently under review: Jackie Nowell
2010 Violations: CPAs —. none
NOVs - MV - Quarterly - Oil & Grease - Dec 2010
MV - Quarterly - Oil & Grease - Sept 2010
MV - Quarterly - Oil & Grease - June 2010
Late DMR — May 2010
Stream information
Stream: North Toe River
River basin: French Broad River Basin
Sub-basin: 04-03-06
Hydrologic Unit Code:
Stream Index: 7-2-(27.7)
Quad:
Grid: D 11 SW -
Stream classification: C - Trout
Drainage area sq mi: 96.5
Instream Waste Conc.: 10% @ 2.16 MGD
Chronic Toxicity conc.:
Average stream flow: 165 cfs
Summer 7Q10 cfs: 30
Winter 7Q10 cfs: 39
30Q2 cfs:
Other information
Directions: US Hwy 70 in Swannanoa to 1-40 East to US Hwy
70 to US Hwys 221 & 226 in Marion. Proceed to
Spruce Pine via US Hwy 226. Go the intersection
of US Hwys 226 and 19E. Turn right on US Hwy
19E. Proceed — 5-6 miles. The Unimin
Schoolhouse Quartz facility is on the right.

Notes: Take hard hat, safety glasses, ear plugs and
steel-toed shoes/boots.

NCDENR.
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Pat'McCrory Charles Wakild, P. E. John EE_Skyarla5
Governor Director LDNWVQ/SurfaCe
1✓�r� tyr DMarch 11,2013 8 2013
Mr.Jeffrey S.Ferguson,P.E. r Protection sectionUnimin Corporation gional Office
P.O.Box 588
Spruce Pine,NC 28777
Subject: NPDES Permit Correction
Permit No.NC0000361
Unit„i„ Corporation-'Schoolhouse Quartz Facility
Facility Class H
Avery County
Dear Mr. Ferguson:
Division personnel have determined that the expiration date of the subject permit is
incorrect. Accordingly,we are forwarding the attached NPDES discharge 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 U.S. Environmental Protection
Agency dated October 15,2007(or as subsequently amended).
Please replace the current permit cover page with the attached page. Note that-the
correct permit expiration date is February 29,2016.
If any parts,measurement frequencies or sampling requirements contained in this
permit are unacceptable to you,you have the right to an adjudicatory hearing upon written
request within thirty(30) days following receipt of this letter. This request must be in the form
of a written petition, conforming to Chapter 150B of the North Carolina General Statutes,and
filed with the Office of Administrative Hearings, 6714 Mail Service Center,Raleigh,North
Carolina 27699-6714. Unless such a demand is made,this permit shall be final and binding.
Please take notice that this permit is not transferable. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits,which may be required by the Division of Water Quality,
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone] FAX:[phone]
Internet:www.ncwaterguality.orq One
An Equal Opportunity1AffirmativeActionEmployer MfthCarolina

Mr.Jeffrey Ferguson
March 11,2013
Page 2 of 2
or permits required by the Division of Land Resources,Coastal Area Management Act,or any
other Federal or Local governmental permits may be required.
If you have any questions or need additional information,please contact Ms.Jacquelyn
Nowell at telephone number(919)807-6386.
Sincerely,
L
/'-�""'�C6harles Wakild,P.E.
Attachments
cc: FAshe`ille_Regional Office/Surface Water Protection Section(eco_p)'
Aquatic Toxicology (ecopy) _
NPDES File
Central Files

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 from a facility located at the
Schoolhouse Quartz Facility
107 Harris Mining Company Road,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 June 1,2012.
This permit and the authorization to discharge shall expire at midnight on February 29,2016.
Signed this day April 30,2012.
"I o L- Charles Wakild.,P.E., Director
Division of Water Quality
By Authority of the
Environmental Management Commission

NCO000361
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 Facility
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 filters;
• 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 Facility, 107 Harris Mining
Company Road,Spruce Pine, Avery County, and;
2. Discharge treated wastewater through Outfa11001 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.

• ATF9Q
O � b a:r..ss-•tsvm��,w.:.0 ,,.........w+ .n t+.'.`a s•xumm .
!! a .
wilhain G.Ross Jr.,Secretary
> r North C�roli n n on d �r�)) urcesi
I�. '
In ,l I rector
Division of.•W to uality{
teinber 26, 2006 OCT r'p l 2006 Se
Mr.Andrew G. Bradley j
Unimin Corporation ! WATER QUALITY SECTION
ASHEVILL--E REGIONAL OFFICE
P.O. Box 588 f;
Spruce Pine, North Carolina 28777 k
•. tr• ;ep;-.-.-�'�:ssr;�P.JAcas✓.:gsecLornnee,,.lt w_+w.vucs�x..,u�.u'fw a.:xta -2,
Subject: NPDES Pennit-Issuance - ~
NPDES Permit NC0000361'
Unimin-Schoolhouse Quartz Facility
Avery County.
Dear Mr. Bradley:
Division personnel have reviewed and approved your application for.renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge 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 U.S. Environmental
Protection Agency dated May 9, 1994 (or as subsequently amended.)
The permit authorizes the Unimin Corporation to discharge up to 2.16 MGD of treated
wastewater from the Schoolhouse Quartz Facility to the North Toe River, a class C Trout
water in the French Broad River Basin. The permit includes discharge limitations /or ,.
monitoring for flow, total fluoride, total suspended solids (TSS), settleable solids, turbidity,
pH, chloride, and chronic toxicity.
The request for results of a priority pollutant analyses has been rescinded based on
the information submitted in the facility's NPDES application, Item V-Part B.
The,following modifications have been made to the permit:
■ The monthly monitoring requirement for lindane will be removed from the permit
based on the results of a reasonable potential analysis. The lindane data indicated
no potential to exceed the water quality standard. Effluent data submitted
indicated no detections of lindane in the effluent or in upstream samples from
August 2004 through December.2005.
■ The addition of a special condition for turbidity. The condition states that 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 into orate limitations'sufficient to protect the
receiving waters. See Special Condition ffi7,)
• The addition of effluent limitations and monitoring requirements for mine
dewatering and land:disturbing actw-ities. These requirements have been added in .
Section B. Final Limitations and Controls for Stormwater Discharges, Parts. (4) and
(5), to ensure that all requirements from Unimin's previous stormwater permit
(NCG020112) are adegwat-ely Govaread in this permit for.the protection of the North
Toe River.
Noae Carolina
North Carolina Division of water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone] Customer Service
Internet: www.newatei-quality.org Location: 512 N.Salisbury St. Raleigh,NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Letter to Mr. Bradley
Page 2
Unimin has requested that quarterly monitoring be included for the mine
"dewatering parameters. However, because of the North Toe River's designation as
impaired for turbidity, it is recommended that monthly monitoring remain so that-
the impact on the stream from mine dewatering can be consistently evaluated:
The following is a modification from the May 10th draft permit:
• Monthly monitoring for oil and grease will be reduced to quarterly,based on
Unimin's information that.oil and grease impact should.be minimal.
The North Toe River is listed as-an impaired stream on North Carolina's 2006 Draft
303(d) list. This means that the stream does no meet all water quality standards. It is the
plan of the Division to work for the improvement and recovery of the River. In the event of the continua nce of problems, the-fiztur- may require t1i�Ferr oval of direct.point source
dischargers to the North Toe River for the health of the stream. If there is noncompliance
with permitted effluent limits and degradation of the North Toe River can be attributed to the
Unimin Corporation WWTP discharge, then removal of the discharge may be necessary. The
Unimin Corporation may determine in the future that an alternative to surface water
discharge may be more appropriate: _
If any parts, measurement frequencies or sampling requirements contained in this
permit are unacceptable to you, you have the right to an adjudicatory hearing upon written
request within thirty (30) days following receipt of this letter. This request must be in the
form of a written petition, conforming to Chapter 150B of the North Carolina Generale
Statutes, and filed with the office of Administrative Hearings, 6714 Mail Service Center—
Raleigh,
Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall be
final and binding. -
Please take notice that this permit is not transferable. The Division may require
modification or revocation and reissuance of the permit: 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 permits may be required.
If you have any questions or need additional information, please contact Ms.
Jacquelyn Nowell at telephone number [phone], extension 512. 1
Sincerely, ,
F an W. Klimek, P.E.
Attachments -
cc: Asheville_Region al Office%Surface Water P-rotection Se_c_tio_ri
EPA Region IV/ Marshall Hyatt
Mr. Jeffrey Ferguson/ Unimin Corporation-P.O. Box 588 Spruce Pine, NC 28777
Aquatic Toxicology
NPDES File/NC0000361
Central Files :.

1VC0000361
STATE OF NORTH CAROLINk.
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 wastewatefand 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:
Ian 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;
0 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.

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Facility Information Facility �
Mi
Latitude: 35°56'20" Sub-Basin: 04-03-06 + v r a
Longitude: 81°59'45"
Location v P10, .
Quad#: Linville Falls (1311SVl)
Stream Class: C Trout
Receiving Stream: North Toe River Unimin Corp:Schoolhouse Quartz Operation
Permitted Flow: 2.16 MGD
North T NC0000361

- 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
LIMITATIONS Monitoring Requirements Effluent Monthly Daily' Measurement .Sample Sample
Characteristics Average Maximum Frequency 13Te 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 450.0 lb/day 721.0 lb/day Daily Composite . E,U,D
Solids
Settleable Solids Daily . Grab. E
Turbidity2 -Daily Grab E,U,D
pH, Daily Grab E,U,D
Oil and Grease Quarterly Grab E
Chloride4 Quarterly Composite E
Chronic Toxicity,, Quarterly Composite E
Notes:
1. Sample locations: E-Effluent,I-Influent,U- Kaolin Pumph6use,0rankbin
br dge�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 Bolder shall perform at a minimum;-quarterly monitoring using test,
procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay
Procedure;'Revised February 1998, or subsequent versions or "North Carolina Phase H
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 ih 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:
Test data shall be complete, accurate,include all supporting chemical/physical
measurements and all concentration/response data, and be certified by laboratory

NC0000361
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 M—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 M— 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 ninon 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 5O/. 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 tc 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
Resources. Compliance with the issued permit is considered a requirement.of this permit. `

NC0000361
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. Grace 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:
@)@)Analytical monitoring for stormwater discharges from a basin or-other similar control
structures must be performed within the first 30 minutes of discharge.. `

NCO000361
• 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
< �1Sr11'1I Qr _ a : Yz st n x h
g lIelsu� ment p P& ;^ t s r
g�i�r'�.tY�� ,,�ylf+�E. al�•.t+1`'Yj�S,�y„,�
r . .x,a. ;111Gt@1 IS lcs r.::.`.. r .»r s ha. ., a ,. s >._ .TB, I1CII �.L •7 xe,.TR A"I,x u
settle..*le Solids init7 Annually Grab SDO
Total Sxis ended Solids 111,94 Annualh= Grab SDO .
Turbidi4T NTU Annually Grab SDO
Total Rainfail4 inches Annx4y -- _-
Event Dnration`l nunutes Annually -- --
Total Flosk-� 1V1G -. Anutu�Tl_y -= 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 stokmwater 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
AXIOW­
N
Color 'ei -.Ailnu SDI
OCIOr Sat2ii-Annual SD
Clarifi"Y' Senii-Annud SD
Floating Solids Semi-Anaud SDO
Suspended Solids Senu-Amiiid DO
F6am S enii-Awnial SILO
ail Sheen S'c;n i-Amival SDO
Deposition at or imniedi,t v belo-v . t Semi-Aura,ud SDO
Outfau
Erosion at-or immediately bolo-tv the Semi-:�M j,-d SIB
Oiltll
Other obviousindicators Sem i Am ual SD
of stomllvates p oUntion
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 iii 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 requires 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:
'
p d
A �
4
Effluent Limitations Monitoring Requirements
0P f i M'1 h .
a xi afi. m°3€; ' „',.. ,_,M-;.
D1SCharge MeaSure h
meni� sSame Sam ale
zMonthh Daily
Characteristics rt ' u FrecluencvT ocaon�M
Total F1ow2 E
Settleable Solids 0.1 ml/L 0.2 ml/L Monthly Grab E
Turbidity3, 10 NTU- Monthly Grab E
Total Suspended Monthly Grab E
Solids4
pHs 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/1
and a daily maximum of 45mg/1.
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.
There shall be no,discharge of floating solids or visible foam in other than trace
amounts.

NC0000361, ,
SECTION D: SCHEDULE OF COMPLIANCE
1. The pennittee 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
begutning 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 storrn 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 Flanning 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.

DISCR-,AU'E LOCATION
Z�
ti UNIMIN CORPORATION
..... 64 :4
SCHOOLHOUSE QUARTZ OPERATION
NCO000361
r
NORTH TOE RIVER
14
j
u,
11mia j
2—
If f
00
XR
UrN
0
N
ROAD CLASSIFICATION SCALE 1 :24 000
AY LIGHT-DUTY ROAD.H 1 MILE.
PRIMARY1111 "T HARD OR SURFACE IMPROVED
SECONDARY HIGHWAY 0 7000 FEET
HARD SURFACE [::Mmw= UNIMPROVED ROAD
0 1 KILOMETER
Latitude 35'56'20` Longitude 81059'4511 -F=
Map # D1 1 SW Sub-basin 040306 CONTOUR INTERVAL 40 FEET
IStream Class C--Trout QUAD LOCATION Unimin Corporation
Discharge Class 41 NC0000361
!Receiving Stream North Toe River Avery County
!Design Q 2.16 MGD Permit expires 12/31/01 Schoolhouse Quartz Site

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H.Sullins Dee Freeman
Governor Director Secretary
August 31, 2010
Mr. Jeff Ferguson
Unimin Corporation
PO Box 588
Spruce Pine, North Carolina 28777
SUBJECT: Unimin Corporation
�+ d
�y tonG No:6;000361fE40�1
Transmittal of Approved Plans and Specifications
Dear Mr. Ferguson:
Enclosed is a copy of the plans and specifications, which were approved on June 30,
2010. The subject documents have been stamped"approved" for your records. The Permittee
should retain these documents for the life of the facility.
Should you have questions regarding this matter, call me at(919)715-6206.
?thh
ly,
v
bertson, P.E., Supervisor
Design Management Unit
MM: sr
Enclosures
t
cc: Terry Boston, P.E.,Zachry Engineering Corporation,255 E. Hebron St.,
Charlotte NC 28273
dQ
Michelle McKay, E.I. Z
ATC File
E �---
SEP — 2 2010 I -
1633 Mail Service Center,Raleigh,North Carolina 27699-1633LI 9i \HATER C2UALITY S,^,l iON
Location:2728 Capital Blvd.-Raleigh,North Carolina 27604
Phone:[phone]\FAX:[phone]\Customer Service:1-877-623-6748 PcF'CVILLE RFGIO 0fin
Internet:www.ncwaterqualfty.org
An Equal Opportunity\Affirmative Action Employerw-

Unimin Corporation
A To C No. 000361A0 I
Issued June 30,20 10
MKS-
Engineer's Certification
as a duly registered-P-mfessional Engineer in
the State of North Carolina, having been authorized to observe,(periodically w e y/fu I time)
I e kI I
the construction of the modifications and improvements to the Unimin- choolhouse Quartz
Facility, located off US Highway 19E in Avery County for the Unimin Corporation, hereby state
that, to the best of my abilities, due care and diligence was used in the observation of the
following construction:
Installation of a new 660 ft2 disc vacuum filter with a 125 CT- rn filtrate pump, a
2,650 cfm vacuum pump and a 40 Hp blower, in conformity with the project
plans, specifications, and other supporting data subsequently -filed and approved
I
by the Department of Environment and Natural Resources.
I certify that&)construction of the above referenced project was obsq:k'�,46W" thin
A
substantial compliance and inten"f the approved plans and specifign
Z/7
' Recistration NotSianaturel
C
el
Date fIL—e
Wk.
Send to: Construction Grants &Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633
JUN 2 3 2011
WATER QUALITY SECTION
ASHEVILLE REGIONAL OFFICE

Y
DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0000361 D 0
Facalit In��ririation
ApphcaritjFaeilty Name Unimin Corporation- Schoolhouse Quartz Operation Plant
Applicant Address P.O.Box 588 Spruce Pine NC 28777
Fac�hty Address 107 Harris Mining Company Road Highway 19E Spruce Pine NC 287
Permitec Flow 2.16 MGD
q`5'1?
e of Waste,- Industrial
)Facility/Peixut,5tatu,s... Renewal
Fail�iy Glasscatio Ph sical/Chemical Class II
Cdunty�,` „ Aver
1Vli
`sce�laneous
Receiving°Strum North Toe River Regional Office Ashevill e
Stream,Glassifcatian: C Trout USES Topo Quad D11NW
303(d) Listed?.`' No Pernut Writer Jackie Nowell
NMI, - 04-03-06 Date: 2/16/2004
Drainage Area`(rni2) 96.5
Surnmez 7Q 10;(cfs) 30 59� ,4
Whiter 7Q 10 (c€s) 39
Average Flow(cfs) 165 `
10%
Frinary SIC Carle 1499(Mini
n )
SUMMARY OF FACILITY INFORMATION AND WASTELOAD ALLOCATION
Unimin Corporation is requesting a permit renewal for its Schoolhouse Quartz Operation Plant. The
Schoolhouse Quartz Operation Plant does mining,milling, and separation of Alaskite ore to produce
quartz, feldspar, and mica. The facility is permitted to discharge into the North Toe River, class C-
Trout waters,in French Broad River Basin. Outfall 001 discharges process water. Plant limits flow
to an average of 1500 gpm(2,160,000 MGD)
In January 2003,Unimin Corp.requested that the plant's Stormwater Permit COC NCG020112 be
combined with the NPDES permit NC0000361. Outfall 002 is an intermittent stormwater discharge.
Limits and monitoring requirements will be added to the NPDES discharge permit.
The existing wastewater treatment plant consists of-
• Dewatering cyclones;
• Lime and polymer feed systems;
• thickeners;
• disc filter;
• Alum,lime and polymer addition;
• pH adjustment;
• emergency pond;
• mix/reactor tanks;
• multimedia filter;
• filter press, and
• recycle and flow measurement
The facility adds lime, sulfuric acid, and sodium bicarbonate as needed for pH control. Also adds
alum, anionic and cathodic polymers as needed for flocculation. Other chemicals used in the process
are in HF, HCI, caustic, amine, petroleum sulfunate and fuel oil. Oil and grease are expected in
small amounts from leaks and drips from mobile equipment. HCl is used in the laboratory and
Research and Development facility.
Uninai 1.Corporation--Schoolhouse Quartz Op xation Fact sheet
NPDES I3encnval
pare l

r'
c
The existing limits for the renewal permit are as follows: ,
Pollutant Mo. Avg. Da. Max.
Flow 2.16 MGD
Total Suspended 450 lbs/dap 721 lbs/day
Residue
Total Fluoride 109 lbs/day 218 lbs/dap
Settleable Solids Daily
monitoring
Turbidity Daily
monitoring
Chloride Quarterly
monitoring
pH 6-1 O SU
Chronic Toxicity 10%
RECEIVING STREAM INFORMATION:
The North Toe River is not listed on North Carolina's 2002 303(d)list.
INSTREAM MONITORING:
Upstream: Upstream at least 50 feet
Downstream: Downstream at least 300 feet.
Parameters: Fluoride,Turbidity,pH
(see attached memo on North Toe Mines)
TOXICITY TEST RESULTS:
Quarterly Chronic P/F, 10% Ceriodaphnia test. FEB MAY AUG NOV
Facility's compliance with toxicity limit has been good overall. In 2001,there were consistent
problems with passing the toxicity test. FAILS were recorded in Feb 2001 and August 2001,however
all quarterly tests have been passed in 2002 and through November 2003.
Recommendation: Renewal of quarterly chronic test @ 10%
PRIORITY POLLUTANT ANALYSIS RESULTS:
The following parameters are noted in the application as present in the effluent.
Sulfate, Chloride,Fluoride,Aluminum, Calcium, Sodium and Oil & Grease
Results of pollutant scan for 001, sampled on 6/19/2001
Barium 0.057 mg/l NC Std does not apply to C Trout water
Chloride 9 mg/l NC Action level= 230 mg/l;Allowable conc. =2291 mg/l
Fluoride 16 mg/1 NC Std= 1.8 mg/l; Allowable conc. = 17.9 mg/1(17929 ug/1)
Aluminum 2.5 mg/1 No NC Std , EPA Criteria=750 ug/1, Allowable conc.= 7.4 mg/1
(7470 ug/1)
Napthalene 6.4 mg/l No NC Std;No EPA Criteria
alpha-BHC 0.14 ug/1 No NC Std, EPA Criteria=0.0049 ug/l Human Health, Organisms
Allowable conc. = 0.25 ug/l
Lindane(gamma-BHC) 0.13 ug/l NC Std= 0.01 ug/l; Allowable conc. = 0.1 ug/l
The reported values for barium, chloride, aluminum and napthalene do not exceed the allowable
concentrations for those constituents.
i.;nir ilu Corporod.on—Sch oalhotise Quartz Operaf;iail Factsheef;
ILr.t-'DES Reiiew al
P

9
However,the one value for )ride is close to the allowable concentration. It should be noted that
the permit already contains a monthly average limit of 109 lbs/day(or 6.1 mg/1) for fluoride. The
daily maximum value is 218 lbs/day or 12 mg/l and that is the value that was exceeded. There were
no recorded monthly permit violations for fluoride in 2001 for the Schoolhouse plant. The permit
already protects for fluoride exceedances and will be recorded as noncompliant. All Toxicity tests
have been passed since 2001 when the elevated values were recorded.
The one value for lindane slightly exceeds the allowable concentration of 0.1 ug/l. Will recommend
that a limit for lindane at 0.1 ug/1 be placed in the new permit.
Recommendation:A limit for lindane should be placed in the permit. If after twelve months of
sampling for this parameter, all values are below detection,Unimin can request that DWQ re-
evaluate the inclusion of the lindane limit.
COMPLIANCE REVIEW:
Facility has been in compliance with all permit limits consistently in 2001,2002, and 2003.
PROPOSED CHANGES:
• Recommend that a limit for lindane at 0.1 ug/1 be placed in the new permit based on
the value in the 2001 PPA.
• Recommend that stormwater limits be incorporated into this permit;
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: 03/24/2004
Permit Scheduled to Issue: 05/10/2004
Projected Effective Date of Permit: 06/01/2004
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact
Jackie Nowell at(919)733-5083 ext. 512.
NAM DATE: lI Cd
1
Urtirixin Corporati.ori- Schoolhotis£';o1uattz 017eration'Fad.alieet
NPUES Renewal
Page 3

REGIONAL OFFICE COMMENT:
NAME: DATE:
NPDES SUPERVISOR COMMENT:
NAME: DATE:
ITI)iyllin Corporation - Schoolhouse.QUartz Operation Factsheet
NPDES Renewal
Pala!4

P�
DIVISION OF WATER QUALITY
Point Source Branch
NPDES Unit
August 22, 2003
MEMORANDUM
To: Madolyn Dommy
Marshall Hyatt
EPA Region IV �i
Through: Dave Goodrich"/1
From: Jacquelyn M. Nowell
Subject: North Toe River Mining Dischargers
French Broad River Basin
Mitchell County,North Carolina
Background
There are six feldspar and quartz mines discharging into the North Toe River in the
French Broad River basin (subbasin 040306). The facilities are listed here in order, from
upstream to downstream:
• Unimin- Schoolhouse Facility (NC0000361) —2.16 MGD
• Feldspar Mines (NC0000353) —3.5 MGD
• Unimin-Crystal Facility (NC0084620) —0.36 MGD
• K-T Feldspar Mines (NC0000400) - — 1.73 MGD
• Unimin —Quartz Facility (NC0000175) —3.6 MGD
• Unimin—Red Hill Facility (NC0085839) —0.682 MGD
Please see the attached schematic that represents the mine locations on the North Toe
River. Most of these facilities have been discharging since the early 1980's. The
exception is the Red Hill Facility that started discharging in 1995 and is located
approximately 20 miles downstream of the other mines and is not relevant to this
discussion from the standpoint that no interaction occurs between this plant and any
other. Therefore, this discussion will only include the mines above the confluence of the
South Toe River. It should also be noted that the Unimin — Crystal Facility discharges
effluent into the Feldspar Mines facility. There is the possibility of a separate discharge
in the future; therefore the facility has received a fluoride allocation.
The primary area of concern is the discharge of fluoride from these facilities. The North
Carolina water quality standard for fluoride is 1.8 mg/l. The allowable fluoride loading
for the North Toe River was determined in 1986 and has been allocated to these mines as
a group instead of individual allocations. This approach of allocating the total fluoride
1

- e
w
MINE DISCHARGES ON NORTH TOE RIVER
River Mile NPDES Permit number
41 .5 X NC0000361- Unimin-Schoolhouse Quartz
33.8 NC0000353- The Feldspar Corp.
NC0084620- Unimin-Crystal
31.4 HWY 19
29.2 NC0000400- K-T Feldspar
28.6 NC0000175- Unimin-Quartz
27.5 Ambient monitoring station
21 .6 X South Toe River junction
6.0 NC0085839- Unimin-Red Hill

:o
The Division uses a weight of evidence approach when assessing water quality. That is,
all available data are reviewed and evaluated to determine the appropriateness of certain
actions. There are three categories of information in this case:
• Instream biological assessments
• Whole-effluent toxicity testing
• Instream chemical data
Instream biological data are the most directly reliable measurements of stream health and
are, therefore, given the greatest consideration. Whole-effluent toxicity testing also is
given a lot of weight during deliberations. It is not a direct measurement of stream
conditions, but it is a direct measurement of the interaction between wastewater and
species that inhabit the stream or river. The Division also considers comparison of
physical or chemical measurements to existing water quality standards. In the presence
of all three categories of information, contraventions of water quality standards, although
considered serious, are given the least amount of weight. The reason for this is that
comparisons to numeric criteria (which are based on whole-effluent toxicity testing) are
indirect measurements of the biota in the stream. All of this information is valuable, but
North Carolina chooses to make a comprehensive critical evaluation of all available data.
Use Support
There are no segments of the North Toe River listed on the North Carolina 2003 303(d)
impaired stream list. There are approximately 556 miles of the North Toe River that are
rated fully supporting designated uses including the river reaches receiving effluent from
these mines.
Instream Biological Assessment
The benthic macroinvertebrate data for the North Toe River below all the quartz mines
demonstrate good water quality. The most recent evaluation was in 1997 at State Road
1162 at Penland, Mitchell County. This is located just 0.5 miles downstream of the
Unimin-Quartz discharge. There has been improvement in the biological rating over the
years from a poor rating in August 1988 to a good-fair rating in 1989 and 1992.
Macroin vertebrate data for the most upstream station above the quartz mines, North Toe
River at US19E at Ingalls, Avery County, indicate a rating of excellent water quality as of
July 1997. The table below indicates North Toe River biological monitoring stations and
their biological ratings during the 10 year period between 1987 and 1997.
sio�oglca)t Rating's `
1989 992 99�
StatLfl© Iocat�tonr� J 9i~a7
North Toe R.,US 19E Good Good Good Good Excellent
at Ingalls
North Toe R., Fair Poor Good Good Good
SR1162, Penland —Fair -Fair
3

r
Number of
Monitoring Locations Number of Obs. values > 1.8 mg/l %
Above Unimin Schoolhouse 43 0 0
Franklintown Bridge 43 0 0
Above Feldspar 37 0 0
Below Feldspar 38 0 0
Above K-T Feldspar 41 7 17%
Below K-T Feldspar 42 15 36%
Above Unimin-Quartz 42 5 12%
SR 1162 at Penland Bridge 42 3 7%
327 30 9%
Ambient Monitoring Data
The Division conducts ambient monitoring in the North Toe River at two sites. The first
station is at US Highway 19E near Ingalls, NC nearly 1 mile above the Unimin-
Schoolhouse Quartz mine. The second station is at State Road 1162 at Penland
approximately 0.8 miles below the Unimin-Quartz outfall. These stations are above the
most upstream mine and below the most downstream mine. Since January 1999, there
have been 30 samples of fluoride taken. There have been only 3 values > 1.8 mg/1 and
these occurred in February 2000, February 2001 and June 2001. This indicates that 90%
of the.ambient samples in the past 4 years have been < 1.8 mg/l.
Discussion of Water Quality Information
An overall view of water quality in this segment of the North Toe River indicates that the
biological assessment shows improving water quality conditions. The toxicity data
indicates that the discharges are not toxic or causing toxicity instream. There is greater
than 90% compliance with the toxicity limits. Self monitoring instream data conducted
by the discharges does demonstrate that some instream fluoride standard exceedances
occur. The majority are below K-T Feldspar, and it is concluded that these occur because
the two dischargers are in such close proximity and North Carolina (with EPA approval)
has used a"bubble" permitting approach, which allows some localized impacts by design.
However, the average instream fluoride values collected between January 1999 and
August 2002 show that upstream and downstream of all the dischargers, the instream
fluoride average is below the standard of 1.8 mg/l.
DWQ Recommendation
The Division recommends that the allocations for the North Toe River dischargers remain
the same. Water quality data show that there is no impairment in the stream, there have
been minimal toxicity problems, and the numeric water quality standard is being
protected> 90% of the time. It recommended that all the feldspar and quartz mines have
their permits reissued at the existing fluoride allocations.
Attachments
cc: Forrest Westall
Mike Parker
Matt Matthews
NPDES Files: NC0000175 NC0000353 NC0000361
NC0000400 NC0084620 NC0085839
5

Subject: NC draft rationale for fluoride mines
Date: Thu, 25 Sep 2003 11:32:29 -0400
From: [e-mail]
To:[e-mail], [e-mail]
CC: [e-mail], [e-mail]
sorry for the delay in getting back to you. Chris Decker and I looked
at it. Based on the data provided and rationale, we can agree with your
conclusion that there is no need to change permit limits at this time.
1 of 1 12/10/03 5:2 9 PM

J
K G.ENGINEERING LTD.
400 Carlingview Drive, Toronto,Ontario,Canada M9W 5X9
Tel:[phone] Fax:[phone]
E-mail:[e-mail] Website:www.hgeng.com
NPDES Permit No.NC0000361
Unimin Corporation + '
Schoolhouse Quartz Facility WWTP �;y _ '�
NOV 5 2001 II��
ENGINEERS CERTIFICATION j _ _
FOR ,
CONSTRUCTION OF WASTEWATER TREATMENT FACILITIES` -
I, Zane Z am a duly registered Professional Engineer in the
(please print)
State of North Carolina. Our company, H.G. Engineering Ltd., has been authorized to design and
periodically.observe the construction of the subject project for the Permittee: --
Project No.: 000361ACB
Pro ect: Addition of Clarifier Unit f,
j _'i
Location: Unimin Corporation o :3
Schoolhouse Quartz Facility WWTP o + z
m
Spruce Pine,North Carolina
Avery County p� �
n 'i
The project consists of:
• construction and installation of a 2nd flocculation and sedimentation unit consisting of:
Tire won of Walter Quality hereby
• one(1)220 gallon flash mix unit; pry �receipt wd wzqft= of
• one(1) 1,280 gallon flocculation unit; and "s Egineen C ertlfiCation
:onstruction
one(1)2,500 ftz lamellar-flow plate separator; and �, t (p3 j 0• and installation of all related structures, equipment,piping, and o her appurtenances,
as presented in the proposed design documents.
I hereby certify that the design was performed with due care and diligence and that the civil construction
and mechanical installation of the above mentioned equipment and all related structures was com , �t4� //// �i
accordance with the approved plans and specifications.
Signature Registration No. s F®L _
c U21445
0
Date
/// p••eeee Ne••e ```�t
Upon completion of construction and prior to operation of the modified facility, the Permittee shall t � ��`�`
Division with a certification from a professional engineer certifying that the permitted facility has been insta 11MIAINk
accordance with the NPDES Permit, this Authorization to Construct, and the approved plans and specifications.
The Certification should be submitted to:
NCDENRIDWQ, NPDES Unit, 1617Mail Service Center,Raleigh, North Carolina 2 7699-1 61 7

Unimin CONFIDENI'lAL
Unimin Corporation
136 Crystal Drive•Spruce Pine,NC 28777
(PHONE)828/766-6081•(FAQ 828/765-4755
August 17,2000
CERTIFIED MAIL
RETURN RECEIPT REQUESTEDAJIG
Mr. David Goodrich, Supervisor }
NCDENR L ._-.w_.:_._......._..._.._.____.i
1617 Mail Service Center
Raleigh,NC 27699-1617 1 `..`..`,
Subject: Unimin Corporation—Schoolhouse Quartz Facility
Authorization to Construct,NPDES #NC0000361
Spruce Pine,North Carolina,Avery County
Dear Mr. Goodrich:
Please accept this letter as an application to modify the waste-treatment system at
Unimin's Schoolhouse Quartz facility located in Avery County, North Carolina. This facility
operates under NPDES permit number NC0000361. Unimin is requesting authorization to
instll�a secder. n order to further improve water clarity reporting to plant's final
discharge,pond.
As for construction sequence, this modification to the waste-treatment system will
be performed as follows. Footings and foundations will be poured for both the relocation
of the existing unit and installation of the proposed new clarifier. The plant will be shut
down for a few days in order to move the existing clarifier. The second clarifier will then be
installed and a valve will be opened to split the load between the two clarifiers. This will
improve the water quality reporting to the final effluent pond and ensure long-term
NPDES compliance.
Included in this transmittal are proposed and existing flow sheets, as well as spec
sheets from the manufacturer. Also enclosed with this application is the $200.00 fee (Check
# 2302) as required for this submittal. As a matter of expediency,the four (4) copies of the
application have been distributed as follows: three (3) with this correspondence and one to
Mr. Michael R.Parker at NCDENR,Asheville,North Carolina.
Please note that the information is stamped confidential. Unimin Corporation is
requesting that this information be treated as confidential and thereby protected from
public disclosure.
Unimin believes that such information if made public, would divulge technology,
methods and processes entitled to protection as trade secrets of Unimin Corporation.

Mr.David Goodrich
August 17,2000
Page 2
Accordingly, we are requesting confidentiality of this information under State Statute 143-
215.3.
In support of this request,Unimin Corporation herein avers:
A. The production of high purity quartz is a highly competitive industry in which
market position is very much dependent on possession of the latest technology and
process development.
B. The processes and technology associated with Unimin's production of high purity
quartz have been consistently treated by Unimin in its operating policies,procedures
and practices as proprietary and confidential trade secrets.
C. Unimin believes that such processes and technology are in its sole possession and
are not generally available to Unimin's competitors or the public.
D. Such confidential processes and technology which have been developed at great
time and expense to Unimin are the property of Unit in and represent a great value
and competitive advantage to its market position and are an integral part of
Unimin's continuous quartz production operation.
E. The unprotected divulgence of such confidential information would result in an
irreparable harm to the competitive position of Unimin Corporation in this market.
If you have any questions regarding this matter or require further information,
please do not hesitate to contact me at [phone]. Thank you in advance for your help
to expedite this permit modification.
Sincerely,
Jeffrey S. Ferguson
Environmental Engineer
UNIMIN CORPORATION
enclosure
cc: Mr. Michael R. Parker
North Carolina DENR
Division of Water Quality
69 Woodfin Place
Asheville,North Carolina 28801
Reid Carlson; Carl Horvat;Bill Shalter; C. F. Stover (cover letter); Steve Taylor

State of North Carolina"
Department of Environment4�4&0*-
J
Pand Natural Resources v
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Kerr T. Stevens, Director NC DENR
March 23 2001
Mr. Jeffrey S.Ferguson
Unimin Corporation _I,;." MAR 2 8 2001
P.O. Box 588
Spruce Pine, North Carolina 28777 7,.;'Jill l
Subject: Authorization to Construct
ATC No. 000361ACB
Schoolhouse Quartz Facility WWTP
Avery County
Dear Mr.Ferguson:
The'Division of Water Quality's NPDES Unit has reviewed the Unimin Corporation's request for an.
Authorization to Construct a second clarifier at the.Schoolhouse Quartz Facility WWTP, including
su , lemental.information,received,:on March 15. The' vision finds.the,proposed-impTbvements and N..
.. .Ph ,
design,to°be,satisfactory and.hereby;.grants autho J.
nation foi ,the following:
• construction and installation of a 2"d'fl c' culation;and sedimentation unit tonsisting of:
one (1)F220 gallon flash'iiiix:unit; :1
( ) 11'280 gall ia
one 1 2,500fe lamellar-flow 1teseparator;and
• construction and installation of all related structures, equipment, piping, controls, and-other,
appurtenances, as described in the design submittal.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of NPDES Permit
No. NC0000361, issued January 22, 1997, and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in that
permit.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required
by this Division, such as the construction of additional or replacement wastewater treatment or
disposal facilities.
Notification Requirements
The Permittee shall notify the Asheville Regional Office, telephone number [phone], at least
forty-eight (48) hours in advance of operation of the installed facilities, so that an in-place inspection
can be made. Such notification to the regional supervisor shall be made during the normal office
hours of 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Engineering Certification
Upon completion of construction and prior to operation of-the modified facility, the Permittee shall
provide the Division with a certification from a professional engineer certifying that the permitted
1617 Mail Service Center, Raleigh, North Carolina 2769971617 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer Internet: http:/fh2o.enr_state.nc.us/'

Unimin Corporation
ATC No. 000361ACB
Page 2
facility has been installed in accordance with the NPDES Permit, this Authorization to Construct,
and the approved plans and specifications. Mail the Certification to the NPDES Unit, 1617 Mail
Service Center, Raleigh, North Carolina 27699-1617
ORC Requirements
The Permittee shall employ a certified wastewater treatment plant operator to be in responsible
charge (ORC) of the wastewater treatment facilities. The operator must holm a certificate of the type
and grade at least equivalent to or greater than the classification assigned to the wastewater treatment
facilities by the Certification Commission. The Permittee must also employ a certified back-up
operator of the appropriate type and grade to comply with the conditions of Title 15A, Chapter 8G,
.0200. The ORC of the facility must visit each Class I facility at least weekly and each Class II, III,
and IV facility 'at least daily, excluding weekends and.holidays; and must properly manage and
document daily operation and maintenance of the facility and comply with all other conditions of
Title 15A, Chapter 8G, .0200.
Additional Conditions
The Operational Agreement between the Permittee and the Environmental Management Commission
is incorporated herein by reference'and is a condition of this Permit. Noncompliance with the terms
of the Operational Agreement shall subject the Permittee to all' sanctions provided .by G. S'.. 143-
215.6 for violation of or failure to act in accordande withthe terms and coridlitions of-this Permit.
Failure to abide by the requirements contained in this Authorization') Construct;may subject the _
Permittee to an"e* nforcement action by the Division of Water."`Quality ixn -accdrdance with.North
Carolina General Statute 143-2'15.6A'to'143-215.6C:
The issuance of this Authorization to Construct does not preclude the Permittee f-om.complying with
any and all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies!(local,istate, and federal) which have jurisdiction.
The Permittee shall maintain a copy of the approved plans and specifications on file for the life of
the facility. One (1) copy of the approved plans and specifications is enclosed for your records.
If you have any questions about this Authorization to Construct, please contact Mike Templeton, at
[phone], extension 541.
Sincerely,
Kerr T. Stevens
Director
Enclosures: Project Design Documents
Engineer's Certification Form
Copies: `Mh ,i'lil; °e rr ac- t r Xti
Technical Assistance and Certification Unit
Central Files
NPDES Unit Files

North Carolina
Department of Environment and Natural Resources
Water Pollution Control System Operator Certification Commission ( �
Michael F,EasIey,Governor L
William G.Ross Jr.,Secretary
Coleen X Sullins,ChainnAn NCDENR
CER-TIKED MAIL December 20,2001
RETURN 11ECEIPT REQIMTED
Mr.Mitchell Snyderman
Unimin Corporation
PO Box 588
Spruce Pine,NC 28777
Systems Quartz Feldspar,Schoolhouse(quartz,and Red Hill Plant
CIassification: Grade 2 Physical Chemical System
Subject:]Designation of CRC and Backup CRC for Physical/Chemical
Permit: NC0000175,NC0000361 and NCO085839
Dear Mr.Syndeman:
The Water Pollution Control System Operators Certification Commission adopted Rule 15A
NCAC SG .0306, Classification of Physical/Chemical Systems, effective April 1, 1999. In
order to insure the proper operation and maintenance of these systems, this Rule requires that
all systems permitted for a physical / chemical process to treat wastewater be classified as
physical/chemical systems.
If the subject physical/chemical system consists of systems designed for(1) the remediation
of contaminated groundwater, or (2) that utilizes a primarily physical process to treat
wastewaters, (with the exception of reverse osmosis, electrodialysis, and utrafiltration
systems),then that system shall be classified as a Grade I Physical/Chemical Water pollution
Control System_ Rule 1SA.NCAC 8G.0306(a)
If the subject physical/chemical system consists of systems that utilizes a primarily chemical
Process to treat wastewaters (including, those systems whose treatment processes are
augmented physical processes), they shall be classified as a Grade II Physical / Chemical
Water Pollution Control System. Reverse osmosis, electrodialysis,and utrafiltration systems
shall also be classified as Grade II Physical/Chemical Water Pollution Control System.Rule
15A NCAC 8G•.0306(b)
If the water pollution control system that has,as part of its treatment process,biological water
Pollution control system that may be classified under Rule .0302, then that system shall be
subject to additional classification as a biological water pollution control system. Rule 15A
NCAC 8G.0306(c) ,
Any water pollution control system subject to classification under Rule .0302 of this Section,
utilizing a physical/chemical process to enhance an activated sludge or fixed growth process,
shall not be subject to additional classification. Rule 15A NCAC 80.0306(d)
1618 Mail Service Center,Raleigh,North Carolina 27699-1618
Phone:919—733-0026 1 FAX:919—733-1338'
AN EQUAL OPPORTUNITY%AFFIRMATIVE ACTION F-MPLOYFR-50%nCYCLED/10%POST CONSUMER PAPER

The Water.Pollution Control System operators Certification Connnission hereby classes
your system as a Grade 2 Ph sisal Chemical System. This classification is based on
information submitted in your application for a NFDES permit 'and/or based on the
information you provided in the physical chetical classification survey that.you completed
during the months of April-Maly 2001.
As required by Rule 15A NCAC 8G.0202(2)and the subject permit, a certified Operator in
Responsible Charge (ORC) and back-up operator of the appropriate type must be
designated for each classified system. Yours stem r uires an ORC and back-u
operator who hold valid physical / chemical operator certificates Please complete and
return the enclosed designation form to this office by December 31, 2003. Failure to
designate a properly certified ORC and back-up operator is a violation of the permit issued
for this system.
In accordance with Rule 15A NCAC SG .0406(b),individuals presently working at physical/
chemical water pollution control systems holding a valid Grade I, II, III, or IV wastewater
treatment plant operator certification, may apply for a conditional operators physical I
chemical certificate without examination. He or she may do so if, he or she has one year
experience and has successfully completed a training school sponsored or co-sponsored by the
Commission for Grade I or Grade 2 Physical / Chemical Water Pollution Control System
Operators. This conditional certification allows the bearer to act as the ORC or Backup
ORC of that System only. This conditional certification must be renewed annually per
section .0700 of the rules. The Rules for this certification as well as others is found on the
DWQ/Technical Assistance and Certification Unit web page(http:[/h2O.enr.state.nc.us/tacuo.
Plans are now being made to conduct the first physical chemical school in January 15-18,
2002 at the McKimmon Center in Raleigh. This school is co-sponsored by AWWAIWEA
and the NC Water Pollution Control System Operators Certification Commission. As soon as
arrangements for the school are finalized you will receive more information.
If we can be of assistance or you have any questions concerning this requirement,please call
James Pugh at 919-733-0026,ext, 341 or e-mail:[e-mail].
Sincerely,
James Pugh,Education&Training Specialist
Technical Assistance and Certification Unit
Enclosures
cc:1*RO
Central Files
TAC Facility Files

CDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakiid, P. E. Dee Freeman
Governor Director Secretary
August 3,2012
CERTIFIED MAIL: 7007 1.490 0004 5533 6417
RETURN RECEIPT REQUESTED
M.r. Steve Taylor
Unimin Corporation
P.O.Box 588
Spruce Pine,NC 28777
SUBJECT: NOTICE OF VIOLATION:NOV-2012-TX-0054
Whole Effluent Toxicity(WET)Testing
NPDES Permit No.NC0000361/001
Schoolhouse Quartz Facility WWTP
Avery County
Dear Mr:Taylor:
This is to inform you that a review of your toxicity self-monitoring report form for the month of May 2012 indicates a violation of the
toxicity limitation specified in your NPDES Permit.
You should take whatever remedial actions are necessary to eliminate the conditions causing the effluent toxicity violation(s). Your
efforts may include conducting a Toxicity Reduction Evaluation(TRE), a site-specific study designed to identify the causative agents
of effluent toxicity,isolate the sources of toxicity, evaluate the effectiveness of toxicity control options, and confirm reductions in
effluent toxicity. Please be aware that North Carolina General Statutes provide for assessment of civil penalties for violations of
NPDES permit limitations and requirements.
The reverse side of this Notice contains important information concerning your Whole Effluent Toxicity Monitoring and Reporting
Requirements. Please note appropriate mailing addresses for submitting your Discharge Monitoring Reports (DMRs) and Aquatic
Toxicity (AT) Test Forms. We encourage you to review this information; if it would be helpful to discuss this situation or possible .
solutions to resolve effluent toxicity noncompliance,please contact Mr.John Giorgino with this office at(919)743-8441.
S' cerely, � )
Cindy Moore
Supervisor,Aquatic Toxicology Unit .
cc: Chuc c Cranford-A�shevil4'e�Iegipral;iQf c ;``
Jeff Menzel-Asheville Regional Office n r
Central Files
AUG - 7 2012
Environmental Sciences Section WATER QUALITY SECTION
1621 Mail Service Center,Raleigh,North Carolina 27699-1621 ASHEVILLE REGIONAL OFFICE
Location:4401 Reedy.Creek Road,Raleigh,North Carolina 27607 ; e
Phone:[phone] FAX:[phone] _ NtOfthC rO'fxna
Internet:http://h2o.enr.state.nc.us/esbl "t ,� R.��+��� a•
An Equal Opportunity(Affirmative Action Employer

WHOLE EFFLUENT TOXICITY MONITORING AND REPORTING INFORMATION
➢ The following items are provided in an effort to assist you with identifying critical and sometimes overlooked toxicity testing and reporting
information. Please take time to review this information.The items below do not address or include all the toxicity testing and reporting
requirements contained in your NPDES permit. If you should have any questions about your toxicity testing requirement,please contact Mr.
John Giorgino with the Aquatic Toxicology Unit at(919)743-8401 or another Unit representative at the same number.
➢ The permittee is responsible for ensuring that toxicity testing is conducted according to the permit requirement and that toxicity report forms are
appropriately filed.
➢ The reporting of whole effluent toxicity testing data is a dual requirement. All toxicity test results must be entered(with the appropriate
parameter code)on your monthly Discharge Monitoring Report which is submitted to:
North Carolina Division of Water Quality
Central Files
1617 Mail Service Center
Raleigh,NC 27699-1617
IN ADDITION
Toxicity test data(original"AT"form)must be submitted to the following address:
North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
➢ Toxicity test results shall be filed with the Environmental Sciences Section no later than 30 days after the end of the reporting period
(eg,January test result is due by the end of February).
➢ Toxicity test condition language contained in your NPDES permit may require use of multiple concentration toxicity testing upon failure of any
single quarterly toxicity test. If the initial pass/fail test fails or if the chronic value is lower than the permit limit,then at least two multiple
concentration toxicity tests(one per month)will be conducted over the following two months. As many analyses as can be completed will be
accepted. If your NPDES permit does not require use of multiple concentration toxicity testing upon failure of any single quarterly test, you
may choose to conduct either single concentration toxicity testing or multiple concentration toxicity testing per the Division's WET enforcement
initiatives effective July 1, 1999. Follow-up multiple concentration toxicity testing will influence the Division's enforcement response.
➢ Toxicity testing months are specified by the NPDES Permit,except for NPDES Permits which contain episodic toxicity monitoring
requirements(eg,if the testing months specified in your NPDES permit are March,June,September,and December,then toxicity testing must
be conducted during these months).
➢ If your NPDES Permit specifies episodic monitoring and your facility does not have a discharge from January 1-June 30,then you must provide
written notification to the Environmental Sciences Section by June 30 that a discharge did not occur during the first six months of the calendar
year.
➢ If you receive notification from your contract laboratory that a test was invalidated,you should immediately notify the Environmental Sciences
Section at(919)743-8401 and provide written documentation indicating why the test was invalidated and the date when follow-up testing will
occur.
➢ If your facility is required to conduct toxicity testing during a month in which no discharge occurs,you should complete the information block
located at the top of the AT form indicating the facility name,permit number,pipe number,county and the month/year of the subject report.
You should also write"No Flow"on the AT form,sign'the form and submit following normal procedures.
➢ The Aquatic Toxicity Test forms shall be signed by the facility's Operator in Responsible Charge(ORC)except for facilities which have not
received a facility classification. In these cases,a duly authorized facility representative must sign the AT form. The AT form must also be
signed by the performing lab supervisor.
➢J .To determine if your AT test forms were received on time by the Division of Water Quality,you may consider submitting your toxicity test
results certified mail,retumzdceipt requested to the Environmental Sciences Section.
Erfvlfonmental Sciences Section
,.., _.1621 Mail Service Center,Raleigh,North.Carglina 27699-1621 1�TOne
Location:4401 Reedy Creek Road,Raleigh,North Carolina 27607 1 v orth.Carolina
Phone:[phone] FAX:[phone]
Internet:http:11h2o.enr.state.nc.us/esb/ atut a"ff
An Equal Opportunity 1Affirmative Action Employer

I
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
SURFACE WATER PROTECTION SECTION
October 7, 2011
Mr. Karl Kuchta
Unimin Corporation
PO Box 588
Spruce Pine, NC 28777
SUBJECT: Compliance Evaluation Inspection
Schoolhouse Quartz Operation WWTP
Permit No: NC0000361
Avery County
Dear Mr. Kuchta
Enclosed, please find a copy of the Compliance Evaluation Inspection report from the
inspection conducted on September 14, 2011. The facility was found to be in compliance with
permit NC0000361.
Please refer to the enclosed inspection report for additional observations and comments.
If you or your staff should have any questions, please call me at 828-29.6-4662.
Sincerely,
� � p
Wanda P. Frazier
Environmental Specialist
Enclosure
cc: Central Files
Asheville Files
S:\SWP\Avery\Wastewater\Industrial\Unimin Schoolhouse Quartz 00361\CEI 9-14-11.doc
SURFACE WATER PROTECTION—ASHEVILLE REGIONAL OFFICE One
Location: 2090 U.S. Highway 70,Swannanoa, NC 28778 NOrthCarOlina
Phone: [phone] Fax: [phone] Customer Service: 1-877-623-6748 Ivgtumilil
Internet:www.ncwater4uali�.orq

United States Environmental Protection Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
Water Compliance inspection Report Approval expires 8-31-98.
Section A: National Data System Coding(i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 INI 2 151 31 NC0000361 I11 121 11/09/14 117 181CI 191SI 201 1
Remarks
2111111111 11111111 111111111111 111111111111 11111116
Inspection Work Days Facility Self-Monitoring Evaluation Rating 131 GA -Reserved--
67I 1.0 169 70I 3 I 711 I 72I N I 73 LLJ 74 751 I I I I I I 180
Section B: Facility Data tom!
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number)
Schoolhouse Quartz facility 01:20 PM 11/09/14 06/11/01
US Hwy 19-E Exit Time/Date Permit Expiration Date
Spruce Pine NC 28777 03:10 PM 11/09/14 11/02/28
Name(s)of Onsite Representative(s)lTitles(s)/Phone and Fax Number(s) Other Facility Data
Larry Scott Fortner/ORC/828-765-4251/
Name,Address of Responsible Official/Title/Phone and Fax Number
Carl Horvat,PO Box 588 Spruce Pine NC 28777//704-765-4283/' ContactedNo
Section C: Areas Evaluated During Inspection(Check only those areas evaluated)
Permit N Operations&Maintenance E Records/Reports Facility Site Review
Effluent/Receiving Waters
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Wanda P Frazier ARO WQ//828-296-4500 Ext.4662/ j
7
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
— W / )bo � C 11
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type (cont.) 1
3I NC0000361 I11 12I 11/09/14 1
17 18ICI
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
Facility name: Unimin Corporation - Schoolhouse Quartz
(high purity quartz production facility—confidential processes &technology)
WWTP class: PC- II
WWTP type: 2.16 MGD mining and material processing plant consisting of
dewatering cyclones;
surge tank;
lime [calcium hydroxide- Ca(OH)2] slurry tank with 2 agitators;
lime and acrylamide (Drewfloc 2270 0) anionic polymer and cathodic polymer feed systems;
two flocculation/reactor tanks with mixers;
60 ft and 80 ft diameter circular thickeners;
Eimco Process Equipment Company @ disc and pan filters;
chemical pH adjustment using sodium bicarbonate (Na2 CO3) and (rarely) sulfuric acid (H2SO4);
pH analyzer;
continuous flow recorder and totalizer; and
emergency holding pond.
Officials:
Mike Vencil— Plant Manager
Jeffrey S. Ferguson, P.E.; Environmental Engineer(@ Crystal Operation)
Operator information:
ORC: Larry Scott Fortner—Cert. #28908— PC- 11
Back-up ORC: Kevin Perkins—Cert. #28623—PC— 11
Inspection Summary:
The WWTP facility appears to be operating properly and is well maintained.
The receiving stream contained extremely fine air bubbles, giving the appearance of a pale green
to greenish white color. The WWTP discharge does not appear to have a negative impact on the
receiving stream.
The facility appears to be in compliance with permit conditions.
Page# 2

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 09/14/2011 Inspection Type: Compliance Evaluation
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application? ❑ Q ■ n
Is the facility as described in the permit? ■ ❑ n n
#Are there any special conditions for the permit? n ■ n
Is access to the plant site restricted to the general public? ■ ❑ n Cl
Is the inspector granted access to all areas for inspection? ■ ❑ ❑ n
Comment:
Operations&Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ n ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO,Sludge ■ n n n
Judge, and other that are applicable?
Comment:
Page# 3

A1
�e
4
' 1fl iiv ■ ■
�ali Environmental Affairs
Unman Corporation
136 Crystal Drive•Spruce Pine,NC 28777
(PHONE)828/766-6081•TAX)828/765-4755
_ August_3,2009
Mr.Roger Edwards
Surface Water Protection Supervisor AUG - 5 2009 l
NCDENR-Division of Water Quality
2090 U. S. Highway 70 —
Swannanoa,North Carolina 28778 WATER QUALITY SECTION
ASHEVILLE REGIONAL OFFICE
Subject: Copies of SPCC Plans and Training Documentation
Unimin Corporation's Crystal, Quartz/Feldspar,and'S&661hchi e uirtz Facilities
/V is 0000)-3 6 /
Dear Mr. Edwards:
Per your request at our meeting on July 20, 2009, please find enclosed copies of
SPCC Plans for Unimin's Quartz/Feldspar and Schoolhouse Quartz Facilities. Unimin's
Crystal Facility is not required to maintain a SPCC Plan as they are well below the thresholds
requiring such. However, Crystal has continued to maintain inspections, training, etc. with
an older SPCC plan until a finalized version of a draft North Carolina Emergency Reporting
Chemical Spills/Releases plan is issued by Unimin's Environmental Affairs Department.
Additionally, please find attached Annual Refresher Training records which include
Spill Prevention, Control & Countermeasure Plans. Each facility has numerous overheads
utilized in the training session which cover all aspects of the plans.
As you are aware, while Unimin's Schoolhouse Quartz Facility is many miles
upstream from the discharged "slug", Unimin's Crystal and Quartz/Feldspar Facilities were
both shutdown during the N. Toe River complaint incident under investigation. We will
assist in anyway we can to help find the cause of this complaint and help bring this
investigation to a close. As always,Unimin will continue to strive to maintain excellent water
quality in the effluent discharging to the N. Toe River. If you have any questions or require
further information,please do not hesitate to contact me at(828) 765-1114 ext. 13.
Sincerely,
Jeffrey S. Ferguson,P. E.
Environmental Engineer
UNIMIN CORPORATION
c: cover letter only:EA Files;Karl Kuchta;Doug Myers;Sandra Phillips;Mike Vencill

SPILL PREVENTION, CONTROL,.AND
COUNTERMEASURE PLAN
FOR
UNIMIN CORPORATION
SCHOOLHOUSE QUARTZ
July 2009
AUG - 5 2009
WATER QUALITY SECTION
ASHEVIL LE REGIONAL OFFICE

CONTENTS
Page Subject Reference Cite
1- General Site Information
1 Designated Person Responsible for Oil Spill Prevention 112.7(f)(2)
1 Management Approval 112.7
2 Certification 112.3(d)
2 SPCC Plan Terms 112.5
3 Record Keeping 112.7(e)
4 Pejsonnel Training 112.7(f)
4 Delivery Procedures 112.7(a)(3)(ii), 112.7(h)
4 Overfill Protection 112.8 (c)(8)
4 Security 112.7(g)
5 Container Inspection and Monitoring 112.7(e), 112.8(c)(6)
5 Containment Discharge 112.8(b), 112.8(c)(3)
6 Description of Facility 112.7(a)(3)
6 Containers/Secondary Containment 112.7(a)(3)(i,iii), 112.7(c)(1-4), 112.8(c)(3,11)
6 Petroleum Lines 112.8(d), 112.8(b)(3), 112.8(d)(5)
6 Tank List 112.7(a)(3)(i)
6 Applicable State Regulations 11230)
7 Spill Reporting Procedure 112.7(4)
8 Spill Emergency Response Procedures 112.7(a)(3)(iii,v)
8 Additional Spill Notification etc. Requirements 112.4
9 SPCC Alert Notification List 112.7(a)(3)(vi)
10 Attachment C-II
MAPS
General Location Map
Facility Diagram 112.7(a)(3)
APPENDICIES
Periodic Integrity Testing Standards 112.8(c)(6)
Visual Inspection Frequency_ 11.2.8(c)(6)
Visual Inspection Checklist 112.8(c)(6), 112.8(d)(4)
Inspection Log
Containment System Drainage Record Keeping 112.8(b), 112.8(c)(3)
Secondary Containment Drainage Log 112.8(c)(3)(iv)
Tank List 112.7(a)(3)(i)

i
GENERAL SITE INFORMATION
Name of Facility: UNIMIN CORPORATION, SPRUCE PINE SCHOOLHOUSE QUARTZ
Type of Facility: QUARTZ AND FELDSPAR MINING AND PROCESSING
Date of Initial Operation: 1960;UNIMIN ACQUIRED IN 1986
location of Facility: 107 HARRIS MINING COMPANY ROAD (HWY 19E)
SPRUCE PINE,NC 28777
Name and Address of Owner:
Unimin Corporation
258 Elm Street
New Canaan,CT 06840
DESIGNATED PERSON RESPONSIBLE FOR OIL SPILL PREVENTION:
MIKE VENCILL
MANAGEMENT APPROVAL
Corporate management has reviewed this plan and affirms its commitment to implementing
the plan and providing the necessary resources.
Signature #.. . ,_
Name Andrew G. Bradley
Title V.P./Environmental Affairs
Signature
Name Mike Vencill
Title Plant Manager
SPCCPLNS:090?2?SCHOOLHOUSE SPCC FINALDOC(7.23;2009)
1

CERTIFICATION
I hereby certify that:
1. I am familiar with the provisions of 40 CFR, Part 112,
2. 1 or my agent have visited and examined the facility,
3. attest that this SPCC plan has been prepared in accordance with good engineering
practices
4. procedures for required inspections and testing have been established and
5. the plan is adequate for the facility.
Signature
A h r
Name
4 Registration No. d 7
F r w State-
Date
da�o j
SPCC PLAN TERMS
Amendment of this SPCC plan will be necessary no later than six months after any tank
changes, (notably AST installation and/or removal, changes in tank location,containment
changes)or any other facility changes which would affect UNI IIN's potential for oil
discharge. Following plan amendment, certification of the amendment by an RPE will be
necessary.
Review and evaluation of this SPCC plan will be required every five years. The next
scheduled review of the plan will be July 2014.
You must document your completion of the review and evaluation, and must sign a statement
as to whether you will amend the plan, either at the beginning'or end of the Plan or in a log or
appendix to the Plan. The following words will suffice, "I have completed review and
evaluation of the SPCC Plan for(name of facility) on(date)and will(will not)amend the Plan
as a result."
A Professional Engineer must certify any technical amendment to the Plan.
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL:DOC(7/31/2009)
2

RECORD KEEPING
All applicable inspection records shall be signed and made a part of this plan. Applicable
records include:
A) Any tank, valve or line testing(note date, who performed testing, items tested and
results).
B) Tank,valve or line maintenance records.
C) Tank and containment inspection.
D) Safety(or other)meeting attendance(noting name and position) and date SPCC training
and briefing updates were given.
E) Information regarding any spills or releases note:
1. date
2. material spilled
3. amount of material spilled
4. spill location
5. spill cause
6. spill flow
7. special circumstances surrounding the spill
8. spill clean-up/disposal
9. environmental damage caused by spill
10. preventative measures to prevent recurrence
The spill is to be discussed during the annual SPCC briefing.
F) Discharge of rainwater from containment areas (if necessary).
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7/31/2009)
3

PERSONNEL TRAINING
1) All applicable personnel will be trained in the correct operating procedures and
maintenance of equipment to prevent spills.
2) Applicable personnel will be instructed in the operation and location of spill prevention
and containment equipment and spill notification procedures.
3) Applicable personnel will be informed of state and federal pollution control laws,rules
and/or regulations impacting this facility.
4) Annual briefings may occur at safety meetings and will be conducted to assure adequate
understanding of this SPCC Plan and its contents. Such briefings will also highlight and
describe any reportable discharges or failures,malfunctioning components and any
recently developed precautionary measures. The date and personnel(names and job
positions)in attendance at such briefings will be documented.
5) All relevant plant personnel shall be made aware of the location of this plan.
DELIVERY PROCEDURES
1) Prior to delivery;remaining tank capacity will be recalculated to assure there is
adequate tank volume to hold the quantity of fuel ordered.
2) During receipt of product,a trained UNIlV N employee should be at the immediate
site to witness equipment connection,and disconnect activities to make sure that
proper methods are used and precautions are taken by the person(s)making the
delivery to avoid unnecessary overfills,drippings,and releases from hoses and
connections during and after the fill operation,and ensure that all UNDAIN tank valves
are re-secured.
OVERFILL PROTECTION
The plant utilizes direct vision gauges or auto cut-off devices to prevent overfills. A Unimin
employee will be stationed at the tank into which fuel is being delivered to monitor during
bulk unloading operations. As applicable,gauges require calibration on an annual basis. The
following tanks are in need of overfill protection:4TA-51, ME-65A and ME-65B.
SECURITY
The plant runs 24 hours a day. Plant entrance gates are locked during hours of non-operation or non-
use. Security patrols are provided at the plant site.
Buildings containing petroleum tanks or drums 55 gallons or greater are locked during times
of non-operation.
Additional facility fencing at the plant is-not being installed as security patrols,along with the
other listed security measures,are adequate to achieve the objective of preventing vandalism.
The mobile tank will need to be parked inside the shop, 'at the plant site or inside a fence or
patrolled by security if kept at the mine shop.
Tank valves and pump controls will be locked in the closed or off position, or if located inside
a building,the building will be locked during non-operating periods. .
Nighttime security lighting is provided and adequate for vandalism deterrence and spill
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7/31/2009)
4

discovery.
CONTAINER INSPECTION AND MONITORING
Above ground containers (including drums),piping,valves, and containment systems are to
be inspected. See appendix for inspection frequency and procedures.
CONTAINMENT DISCHARGE
Rainwater will be released/pumped from impervious containment systems only after visually
inspecting the water. Once pumping is complete,the pump will be shut off and removed.
Manually operated valves will be opened and left open only in the presence of a Unimin
employee. At all other times,these valves will remain locked. See appendix for discharge
procedures.
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7l31/2009)

DESCRIPTION OF FACILITY
The Spruce Pine Schoolhouse plant is located in Avery County off of Highway 19E,
approximately four miles north of Spruce Pine North Carolina. The plant is surrounded by a
series of tailings/sedimentation ponds. Drainage from these is to the North Toe River. A
general site map is appended.
CONTAINERS/SECONDARY CONTAINMENT
There are no underground petroleum storage tanks at this plant.All AST's are comprised of materials
compatible with the substances they contain and constructed such that they meet the conditions of
storage. All tanks are shop-built.
Outdoor concrete containment systems are designed to hold,at the minimum,the contents of the
entire tank,plus an additional ten percent for freeboard. The outdoor containments have no drain
valves and must be pumped to be emptied. The 1,000-gallon gasoline and highway fuel oil tanks
(TA-54, 55)are double walled and sit on a concrete slab. These tanks He adjacent to the upper old
tank farm. The used oil container under the crusher(TA-61)is double-walled. Fifty-five gallon
drums of used oil sit on top of portable poly containment systems.
There is a 475-gallon mobile double-walled truck mounted tank,which is generally used for fueling
mine equipment.
Spills occurring inside the wet plant would eventually report to the waste treatment plant.
Such spills would also be diluted to such an extent from mixing with tails pond water that
they would pose no environmental hazard.
A map illustrating tank locations has been appended.
PETROLEUM LINES
There are no underground petroleum lines at this facility. In the event of a spill from
any aboveground line outside of a contained area,the spill,if not absorbed or contained
to the immediate area,would wind up in Unimin's pond system. These lines are
pressurized only when the plant is running or fuel is being offloaded to the tanks. All
aboveground lines are of sufficient height,or follow existing beams,barricades or
containment structures such that they are not in jeopardy of being impacted by vehicles
or other equipment.
TANK LIST
See appended Excel spreadsheet.
APPLICABLE STATE REGULATIONS
At the time of writing of this plan,no additional,more stringent state regulations pertaining to
discharge prevention and containment were noted.
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7/312009)
6

SPILL REPORTING PROCEDURE
Spills should be reported as soon as possible to the employee's supervisor,who then will contact the
plant manager.
It is the responsibility of the Plant Manager to report all spills of oil, gasoline, or hazardous
materials occurring outside of contained areas or which have escaped containment as soon as
possible to:
Bill Shalter: Office Phone#: [phone] x222
Home Phone#: [phone]
Drew Bradley: Office Phone#: [phone] x275
Home Phone#: [phone]
Susan Armentrout: Office Phone#: [phone] x224
Home Phone#: [phone]
who will be responsible for contacting the necessary/appropriate federal and state agencies or will
designate another person to do so. (See SPCC Alert Notification List).
It is your first priority to manage the spill-.
Please be ready to supply the following information:
1. exact address or location and phone number of the facility
2. date and time spill occurred or was discovered
3. name and source of material spilled
4. amount of material spilled
5. current status of spill (e.g.,is it contained; if it is not contained,direction and towards what the
spill is moving-be especially cognizant of possible pollution of lakes, streams, etc.)
6. cause of the discharge
7. media affected(air, surface water, ground water)
8. current,weather conditions(e.g.,is it raining?snow melting? etc.)
9. any damages or injuries caused by the discharge
10.whether an evacuation may be needed
11. actions being used to stop,remove and mitigate the effects of the discharge and disposal
options,if known or considered
12. other agencies, individuals or organizations which have been or will be notified of the spill.
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINALDOC(7/31/2009)'
7

The plant manager may contact a local spill response and clean up firm if necessary.
EMERGENCY RESPONSE PROCEDURES
With the heavy equipment the plant has available at it's disposal, spills on land can be managed by
the plant. The plant also has a spill kit located in the waste oil room of the wet plant. For large spills,
and/or spills reaching a water body,the plant may need to contact its local spill response/clean-up
firm.
In the event of a petroleum product spill due to overfilling of the tanks or accidental spill or
rupture,the following is a suggested course of action:
1. Prevent fiu-ther release in as much as possible. Identify and mitigate any fire, explosion
and/or vapor hazards.
2. If the spill breaches containment, sand or earthen dikes/berms may be built or basins
excavated to contain the spill. If containment is not possible and the spill threatens a
flowing body of water,diverting the flow to a low point or non-discharging pond may be
appropriate.
3. Sand and/or agricultural lime or absorbent socks(such as PIGS)may be utilized to absorb
the spill.
4. If the spill enters or is about to enter a flowing water course, a skimming system which
retains the oil and allows clean water to flow underneath should be implemented(such as a
PIG oil only boom).
5. In the event of contained leaks and/or spills, liquid will be removed from the containment in
such a manner so as to minimize the possibility of additional spills and mitigate fire,
explosion and vapor hazards. If the product can be reused,it will be filtered as necessary
and pumped back into tanks for reuse.
6. Sand or other contaminated materials will be either treated on site or transported to an
approved disposal site in accordance with applicable local, state and federal regulations and
in a manner to minimize Unimin's future liability.
ADDITIONAL SPILL NOTIFICATION,REVIEW AND RECORDKEEPING
REQUIREMENTS
The EPA regional administrator and the State agency must be notified in accordance with 40 CFR
Part 112.4 if either of the following occurs:
• The facility discharges in a single event more than 1,000 gallons of oil into or upon navigable
waters of the U.S.
• The facility discharges oil in harmful quantities in two spill events(over 42 gallons)within any
twelve-month period.
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7/31/2009)
8

S.P.C.C.ALERT NOTIFICATION LIST
LOCAL SPILL RESPONSE/CLEAN-UP FIRM (IF REQUIRED)
Laidlaw Environmental Services
Rt. 1, Watlington Industrial Park
Reidsville,NC 27320
800/662-7956 or 919/342-6106
800/334-5953/4(24 hour)
LOCAL FIRE DEPARTMENT# (IF THE SPILL CAN CREATE A FIRE OR EXPLOSION)
911 OR 828/733-3555
RESCUE SQUAD/AMBULANCE SERVICE# (AS NEEDED)
911 OR 828/733-5555
LOCAL POLICE DEPARTMENT# (AS NEEDED)
911 OR 828/733-2023
PLANT MANAGER
Contact Numbers:
Mike Vencill OFFICE 828/765-4251
(HOME) 828/766-9182
OR:
Steve Taylor OFFICE 828/765-4251
(HOME) 828/688-4361
OR.
Rolf Pippert 828/766-6050
(HOME) 828/765-6520
ENVIRONMENTAL AFFAIRS OR THE PLANT MANAGER,IF SO DESIGNATED, WILL
THEN CALL THE FOLLOWING(AS MUCH AS A SHEEN MAY BE REPORTABLE).
NATIONAL RESPONSE CENTER(oil spills or hazardous chemical releases)
1-800-424-8802
STATE AGENCY
North Carolina Department of Emergency Management
800/858-0368 (24-hour)
SPCCPLNS:090722 SCHOOLHOUSE SPCC FINAL.DOC(7/31/2009)
9

ATTACITMENT C-11-Certification of the Applicability of the Substantial Harm Criteria
Facility Name: Unimin Corporation—Spruce Pine Schoolhouse Quartz
Facility Address: P.O.Box 588,Ilwy 19E. Spruce Pine.NC 28777
1. Does the facility transfer oil over water to or from vessels and does the facility have a total oil storage capacity greater
than or equal to 42,000 gallons?
YES X NO
2. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and does the facility lack
secondary containment that is suliciently large to contain the capacity of the largest aboveground oil storage tank plus
sufficient freeboard to allow for precipitation within any aboveground oil storage tank area?
YES X NO
3. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and is the facility located at
a distance(as calculated using the appropriate formula in Attachment C-IIi to this appendix or a comparable formula')
such that a discharge from the facility could cause injury to fish and wildlife and sensitive environments? For further
description offish and wildlife and sensitive environments,see Appendices I. II,and iiI to DOC/NOAA's"Guidance for
Facility and Vessel Response Plans: Dish and Wildlife and Sensitive Environments"(see Appendix F,to this part,section
10,for availability)and the applicable Area Contingency Plan_
YES X NO
4. Does the facility have a total oil storage capacity greater than or equal to t million gallons and is the facility located at-
a distance(as calculated using the appropriate formula in Attachment C-111 to this appendix,or a comparable formula')
such that a discharge from the facility',would shut down a public drinking water intake'?
YES X NO
5. Does the facility have a total oil storage eapaciry greater than or equal to 1 million gallons and has the facility
experienced a reportable oil spill in an amount greater than or equal to 10,000 gallons within the last 5 years?
YES X NO
Certification
I certify under penalty of law that I have personally examined and am familiar with the information submitted in this
document,and that based on my inquiry of those individuals responsible for obtaining this information, i believe that the
submitted information is true,accurate,and complete.
Signature '
Name Andrew G. Bradley
(please print or type)
Title V.P./Environmental Affairs
d s
Date
'if a comparable fonuula is used,documentation of the reliability and anal Aical soundness of the comparable formula must be attached to this lorm.
'For the purposes of 40 C:FR pan 112,public drinking water intakes are analogous to public water systems as described at 40 CPR 14 3.2(c).
SPCCPLNS:090?22 SCIIOOLHOIN:SPCC Fi\AL.DOC(71?12009)
10
v

AE11n I i ICE on
�mi_
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
June 29, 2011
Mr. Andrew G. Bradley, VP, Environmental Affairs
Unimin Corporation
258 Elm Street
New Canaan, Connecticut 06840
Subject: NOTICE OF VIOLATION
NOV-2011-MV-01 12
Permit No. NC0000361
Schoolhouse Quartz facility
Avery County
Dear Mr. Bradley:
A review of Schoolhouse Quartz facility's monitoring report for December 2010 showed the
following violation:
Parameter Date Measuring Frequency Violation
Oil & Grease 12/31/2010 Quarterly Failure to Monitor
Per a conversation today with Mr. Mike Vencill, Plant Manager, and this Office, Mr. Vencill stated that
they have initiated sampling protocol to prevent future problems with monitoring Oil & Grease at this facility.
The Division of Water Quality may pursue enforcement action for this and any additional violations of
State law. If you should have any questions, please do not hesitate to contact Janet Cantwell at
. 8281296-4600.
Sincerely,
Roger C. Edwards, Regional Supervisor
Surface Water Protection Section
cc:�W shevi�l'e '
DWQ Central Files
Mike Vencill/ Plant Manager, Schoolhouse Quartz
S:ISWP1AverylWastewaterllndustriallUnimin Schoolhouse 003611NOV-2011-MV-0112.doc NorthCarolina
- Natura!!y
North Carolina Division of Water Quality 2090 U.S.Highway 70 Swannanoa,N.C. 28778 Phone[phone] Customer Service
Internet: www.ncwaterguality.org FAX [phone] 1-877-623-6748

-A= r"LE CTTY
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H.Sullins Dee Freeman
Governor Director Secretary
June 1, 2011
Carl Horvat
Unimin Corporation
PO Box 588
Spruce Pine NC 28777
SUBJECT: Bioassay Compliance Inspection
Schoolhouse Quartz facility
Permit No: NC0000361
Avery County
Dear Mr. Horvat :
Enclosed please find a copy of the Bioassay Compliance Inspection conducted on
May 10, 2011. The test using these samples resulted in a pass. The facility appeared to
be in Compliance with permit NC0000361.
Please refer to the enclosed inspection report for additional observations and
comments. If you or your staff have any questions, please call me at 828-296-4500.
Sincerely,
Jeff Menzel
Environmental Specialist
Enclosure
cc: Larry Scott Fortner, ORC
Central Files
s: rie Tl eliia,
SURFACE WATER PROTECTION—ASHEVILLE REGIONAL OFFICE
Location:2090 U.S.Highway 70,Swannanoa,NC 28778 One
Phone: [phone]\FAX:[phone]\Customer Service: 1-877-623-6748 NorthCarO/l/ina
Internet:www.ncwaterguality.org S:\SWP\Avery\Wastewater\lndustrial\Unimin Schoolhouse 00361\00361 BCI 2011.doc Naturally

United States Environmental Protection Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
Water Compliance Inspection Report Approval expires 8-31-98
Section A: National Data System Coding(i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 INI 2 I sI 31 N0O000361 I11 121 11/05/10 117 181u1 191.c1 201
LJ LJ Remarks IJ U IJ
21111111111111111111111, 111111111111111111111111116
Inspection Work Days Facility Self-Monitoring Evaluation Rating 81 QA -------- ---Reserved------------
671 169 70I I 71 I D I 72 i N i 73I ) 174 751 I I I I I Li 80
I� Section B: Facility Data r--r `u
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number)
Schoolhouse Quartz facility 10:00 AM 11/05/10 06/11/01
US Hwy 19-E Exit Time/Date Permit Expiration Date
Spruce Pine NC 28777 10:30 AM 11/05/10 11/02/28
Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
Larry Scott Fortner/ORC/828-765-4251/
Name,Address of Responsible OfficialfTitle/Phone and Fax Number
Carl Horvat,PO Box 588 Spruce Pine NC 28777//704-765-4283/ ContactedNo
Section C: Areas Evaluated During Inspection(Check only those areas evaluated)
Effluent/Receiving Waters
Section D: Summary of Findin /Comments Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspectors) Agency/Office/Phone and Fax Numbers Date
Jeff Menzel ARO WQ//828-296-4500/ /
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

i
NPDES yr/mo/day Inspection Type (cont.) 1
9I NC0000361 11/05/10 I11 12I I17 18t_I
i
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
The aquatic test using composite samples of effluent discharged from Unimin Schoolhouse Quartz Facility
has been completed. Unimin Schoolhouse Quartz Facility has an effluent discharge permitted that is 21.6
million gallons per day entering the North Toe River(7Q10 of 30.0 CFS). Whole effluent samples were
collected on May 10th and 12th for use in a chronic Ceriodaphnia dubia pass-fail toxicity test. The test using
these samples resulted in a pass.
Test results indicate that the effluent would not be predicted to have water quality impacts on the receiving
water. These samples were split and sent to Environmental Testing Solutions, in Asheville, NC. The chronic
Ceriodaphnia dubia pass/fail toxicity test run by ETS also resulted in a pass.
Page# 2

Division of Water Quality
May 23, 2011
MEMORANDUM
To: Roger Edwards
Surface Water Proteec�tioon,`ARO
Through: Cindy A. Moore
l "
Supervisor, Aquatic Toxicology Unit
From: Carol Hollenkamp
Quality Assurance Pf 1 er, Aquatic Toxicology Unit
Subject: Whole effluent toxicity test results
Unimin Schoolhouse Quartz Facility
NPDES Permit#NC0000361/001
Avery County
The aquatic toxicity test using composite samples of effluent discharged from Unimin Schoolhouse Quartz
Facility has been completed. Unimin Schoolhouse Quartz Facility has an effluent discharge permitted that
is 2.16 million gallons per day(MGD)entering North Toe River(7Q10 of 30.0 CFS). Whole effluent
samples were collected on May 10 and May 12 by Jeff Menzel for use in a chronic Ceriodaphnia dubia
pass-fail toxicity test. The test using these samples resulted in a pass. Toxicity test information follows.
Test Type 3-Brood Ceriodaphnia dubia chronic pass fail
Test Concentrations 10.0%
Test Result Pass
Control Survival 100%
Control Mean Reproduction 25.5 neonates
Test Treatment Survival 100%
Treatment Mean Reproduction 24.7 neonates
First Sample pH 7.54 SU
First Sample Conductivity 1177 micromhos/cm
First Sample Total Residual Chlorine <0.1 mg/L
Second Sample pH 7.28 SU
Second Sample Conductivity 1226 micromhos/cm
Second Sample Total Residual Chlorine <0.1 mg/L
Test results for the above samples indicate that the effluent would not be predicted to have water quality
impacts on receiving water. These samples were split and sent to Environmental Testing Solutions, in
Asheville,NC. The chronic Ceriodaphnia dubia pass/fail toxicity test run by Environmental Testing
Solutions also resulted in a pass. Please contact us if further effluent toxicity monitoring is desired. We
may be reached at(919) 743-8401.
Basin: FRB06
cc: Central Files
Jeff Menzel, ARO
Aquatic Toxicology Unit Environmental Sciences Section

NCDENR e Q Y
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 18, 2011
Mr. Andrew G. Bradley, VP, Environmental Affairs
Unimin Corporation
258 Elm Street
New Canaan, Connecticut 06840
Subject: NOTICE OF VIOLATION
NOV-2011-MV-0049
Permit No. NC0000361
Schoolhouse Quartz Facility
Avery County
Dear Mr. Bradley:
A review of Schoolhouse Quartz Facility's monitoring report for September 2010 showed the
following violation:
Parameter Date Measuring Violation
Frequency
Oil & Grease Quarter ending September 2010 Quarterly Failure to Monitor
It was also noted that the Compliance box on the back of the DMR was marked "Compliant"when in
fact it should have been marked "Non-Compliant"with an explanation for the non-compliance. If the above
parameter was left off inadvertently,please send an amended DMR within 10 business days of receipt
of this letter to Raleigh at the address found on the front page of your DMR and also a copy to this
office.
Remedial actions should betaken to correct this problem. The Division of Water Quality may pursue
enforcement action for this and any additional violations of State law. If you should have any questions,
please do not hesitate to contact Janet Cantwell at 828/296-4500.
Sincerely,
R ger C. Edwards, Regional Supervisor
Surface Water Protection Section
DWQ Central Files
Jeff Ferguson/Unimin
S:1SWP1AverylWastewaterllndustriaRUnimin Schoolhouse 003611NOV-2011-MV-0049.doc Noe Carolina
Nturu!!y
North Carolina Division of Water Quality 2090 U.S.Highway 70 Swannanoa,N.C..28778 Phone[phone] Customer Service
Internet: www.ncwatercivality.oro FAX [phone] 1-877-623-6748

FILE CCPY
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
February 17, 2011
Mr. Andrew G. Bradley, VP, Environmental Affairs
Unimin Corporation
258 Elm Street
New Canaan, Connecticut 06840
Subject: NOTICE OF VIOLATION
NOV-2011-MV-0048
Permit No. NC0000361
Schoolhouse Quartz facility
Avery County
Dear Mr. Bradley:
A review of Schoolhouse Quartz facility's monitoring report for June 2010 showed the following
violation:
Parameter Date Measuring Violation
Frequency
Oil and Grease Quarter ending June 2010 Quarterly Failure to Monitor
It was also noted that the Compliance box on the back of the DMR was marked "Compliant"when in
fact it should have been marked "Non-Compliant"with an explanation for the non-compliance. If the above
parameter was left off inadvertently, please send an amended DMR within 10 business days of receipt
of this letter to Raleigh at the address found on the front page of your DMR and also a copy to this
office.
Remedial actions should be taken to correct this problem. The Division of Water Quality may pursue
enforcement action for this and any additional violations of State law. If you should have any questions,
please do not hesitate to contact Janet Cantwell at 828/296-4.500.
Sincerely,
Roger C. Edwards, Regional Supervisor
Surface Water Protection Section
01-w.��4sn utille F
DWQ Central Files
Jeff Ferguson/Unimin
i
i S:1SWP1Avery\WastewaterllndustriallUnimin Schoolhouse 003611NOV-2011-MV-0048.doc WorthCarolina
I �atura!!y
North Carolina Division of Water Quality 2090 U.S.Highway 70 Swannanoa,N.C. 28778 Phone[phone] Customer Service
Internet: www.ncwateraualitv.org FAX [phone] 1-877-623-6748

K 1-1
C EN
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
o
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t,,,.:4':a A'j.�.:�c1?.�•f`Sitr}.RexY`65":,'k"m!::y.. ..,-,...�
November 1, 2010
JEFFREY S FERGUSON PE y f`{F
ENVIRONMENTAL ENGINEER I 11 I NOV — 4 2010
UNIMIN CORPORATION
136 CRYSTAL DRIVE (VAI"ER QUALITY SEerlora
SPRUCE PINE NC 28777 ASHEVILLE REGIONAL OFFICE
Subject: Receipt of permit renewal application
NPDES Permit NC0000361
Schoolhouse Quartz Facility
Avery County
Dear Mr. Ferguson:
The NPDES Unit received your permit renewal application on September 1, 2010. A member of the
NPDES Unit will review your application. They will contact you if additional information is required to complete
your permit renewal. You should expect to receive a draft permit approximately 30-45 days before your existing
permit expires.
If you have any additional questions concerning renewal of the subject permit,please contact Jackie Nowell
at [phone].
Sincerely,
Dina Sprinkle
Point Source Branch
cc: CENTRAL FILES
TsheT e/Surface Water Protection
NPDES Unit
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604 7sTOne 7
Phone:[phone]\FAX:[phone]\Customer Service:1-877-623-6748 1�t orthCarolina
Internet:wwvj.ncwaterquality.org ����������
An Equal Opportunity 1 Affirmative Action Employer

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Environmental Affairs
Unimin Corporation
136 Crystal Drive•Spruce Pine,NC 28777
(PHONE)828/766-6081 a(FAQ 828/765-4755
August 30,2010
Mrs.Dina Sprinkle
NCDENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Subject: NPDES Renewal Requests for Unimin Corporation—Crystal,
Quartz/Feldspar,Red Hill,and Schoolhouse Quartz Facilities
NPDES Permit Nos.NC0084620,NC0000175,NC0085839,and NC0000361
Dear Mrs.Sprinkle:
Please accept this letter as a request for renewal of the following NPDES Permits:
Unimin Corporation—Crystal Facility NPDES Permit No.NCO084620
Unimin Corporation—Quartz/Feldspar Facility NPDES No. NC0000175
Unimin Corporation—Red Hill Facility NPDES No.NC0085839,and
Unimin Corporation—Schoolhouse Quartz Facility NPDES No.Jillffig :
Enclosed please find one signed original and two copies of the NCDENR Short
Form C for the Crystal, Red Hill and Schoolhouse Quartz Facilities and EPA Application
Form 1 & Form 2C for the Quartz/Feldspar Facility. It is my understanding that there are .
no fees associated with the renewal requests. There have been no changes to the treatment
plants at any of the facilities since issuance of the latest permits.
Please note that portions of the applications have been stamped Confidential.
Unimin Corporation is requesting that this information be treated as confidential and
thereby protected.from public disclosure.
Unimin believes that such information if made public, would divulge technology,
methods and processes entitled to protection as trade secrets of Unimin Corporation.
Accordingly, we are requesting confidentiality of this information under State Statute 143-
215.3.
SS +'^�*vN;�vavevaacxa D9R.H,..P-3}E/y(iYi .,�'ti.
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NOV - 4 2010
8 •pM1 s r WATER QUALITY SECTION
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S 1
Mxs.Dina Sprinkle
August 30,2010
Page 2
In support of this request,Unimin Corporation herein avers:
A. The production of high purity quartz is a highly competitive industry in which
market position is very much dependent on possession of the latest technology and
process development.
B. The processes and technology associated with UnimhYs production of high purity
quartz have been consistently treated by Unimin in its operating policies,procedures
and practices as proprietary and confidential trade secrets.
C. Unimin believes that such processes and technology are in its sole possession and
are not generally available to Unimin's competitors or the public.
i
D. Such confidential processes and technology which have been developed at great
time and expense to Unimin are the property of Unimin and represent a great value
and competitive advantage to its market position and are an integral part of
Unimin's continuous quartz production operation.
E. The unprotected divulgence of such confidential information would result in an
irreparable harm to the competitive position of Unimin Corporation in this market.
In. addition, Unimin Corporation would like to request the following
revisions/corrections to each NPDES Permit
During the most recent amendment to the Crystal NPDES Permit No. NC0084620,
the upstream/downstream sampling locations were inadvertently changed to"U-upstream at
Altapass Road" and `�D-downstream at the footbridge 'in the Town of Spruce Pine."
Unimin would like to request that this be changed back to "U-upstream at least 50 feet" and
"D-downstream at least 300 feet." Also, Unimin would like to request that the pH be
sampled at the effluent only and remove the unnecessary requirement to sample upstream
and downstream daily.
Unimin would like to request that the requirements to sample Oil. and Grease be
removed from both Quartz/Feldspar NPDES Permit No. NC0000175 and Schoolhouse
NPDES Permit No. NC0000361. There have been no hits at either facility and this
monitoring requirement was imposed due to stating that there are possible leaks and drips
from mobile equipment as all facilities have. Unimin does not believe Coil and Grease to be
present at the discharge and would like to request that this monitoring requirement be
removed from both permits.
Unimin would like to request that the requirement to sample ammonia monthly be
removed from the Red Hill NPDES Permit No.NCO085839 as the facility no longer utilizes
ammonia in any process or research.

Mrs.Dina Sprinkle
August 30,2010
Page 2
If. you have any questions regarding this matter or require further information,
please do not hesitate to contact me at(828) 766-6081 ext. 13.
Sincerely,
Jeffrey S.Ferguson,P.E.
Environmental Engineer
UNIMIN CORPORATION
Enclosures
c: EA Files,Scott Fortner(SQ),Dennis Johnson(RH),Mike Jussila(FJ-l),Karl Kuchta(cover letter),Doug
Myers(QU/SQ),Sandra.Phillips(X.),Steve Wilson(QU),Mike Vencill(SQ)

NPDES PERMIT APPLICATION - SHORT FORM C- Minor Industrial
Minor industrial, manufacturing and commercial facilities.
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh,NC 27699-1617
NPDES Permit Number INCO000361
Please print or type.
1. Contact Information:
Owner Name Unimin Corporation
Facility Name Unimin Corporation-Schoolhouse Quartz Facility
Mailing Address P. O. Box 588
City Spruce Pine
State / Zip Code NC / 28777
Telephone Number [phone]
Fax Number [phone]
e-mail Address n/a
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 107 Harris Mining Company Road, Hwy. 19E
City Spruce Pine
State / Zip Code NC / 28777
County Avery
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name Unimin Corporation-Schoolhouse Quartz Facility
Mailing Address P. O. Box 588
City Spruce Pine 0
State / Zip Code NC / 28777 ,TILI
Telephone Number [phone]
Fax Number [phone] DC.N°""" 'TF;nUALI1
IN"f soUo CB BRAN2H
4. Ownership Status:
Federal ❑ State ❑ Private ® Public ❑
Page 1 of 5 C-MI 10/08

NPDEB PERMIT APPLICATION ® SHORT FORM C e Minor Industrial
Minor industrial,manufacturing and comet ial facilities.
6. Standard IndustTil Classification(SIC) code(s): 1499
6. Number of employeew. 69
7. Describe the treatment systems.List all installed waste treatment components with capacities,
describe the processes that generate wastewaters. If the space provided is not sufficient attach a
separate sheet of paper with the system description.
See attached CONFIDENTIAL operating stags.
S. Is facility covered sander federal effluent limitation guidelines? No ® Yes ❑
If yes, specify the category?
9. Principal product(s) produced: High P®.rity Quaff
Principal raw material(s) consumed: N/A
Briefly describe the manufacturing process(es):
See attached COWMENTIAI,operating status.
Page 2 of 5 C-MI 10/08

r .
NPDES PERMIT APPLICATION- SNORT FORM C.- Minor Industrial
Minor industrial, manufacturing and commercial facilities.
10. Amount of principal product produced or raw material consumed
List s eci c amounts consumed and/or units of roduction over the last three ears
Product Produced or Raw Material Product Produced or Raw Material
Consumed Consumed
AVERAGE (PEAJq
per Day
per Month
per Year *Confidential production data will be submitted separately.
11. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: 7 Duration: 24 hrs/dav
12. Types of wastewater discharged to surface waters only
Discharge Plow
GALLONS PER DAY)
Sanitary-monthly average 0
Utility water, etc. - monthly average 0
Process water- monthly average 988,700
Stormwater-monthly average unkown
Other-monthly average
Explain: 107,000 (mine dewatering outfall 002)
Monthly Average 11095,700
total discharge(all types)
13. Number of separate discharge points: 2 Outfall Identification number(s) 001&002
(numerous stormwater outfalls flow unknown)
14. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitudes
North Toe River
Page 3 of 5 C-MI 10/08

4
NPDES PERMIT APPLICATION -SHORT FORM C -Minor Industrl
Minor industrial, manufacturing and commercial facilities.
Effluent Data[for new or proposed discharges]
Provide data for the parameters listed.Temperature and pH shall be grab samples,for all other parameters 24-hour
composite sampling shall be used.If more than one analysis is reported,report daily maximum and monthly average.
If only one analysis is reported,report as daily maximum.
NOTE.Permittees requesting renewal should complete the table ONLY for the parameters
currently monitored. Summarize the ast 3 Years of e went data.
Parameter Daily Monthly Units of
Maximum Average Measurement
Biochemical Oxygen Demand (BOD5) N/A
Chemical Oxygen Demand (COD) N/A
Total Organic Carbon N/A
Total Suspended Solids 264,59 31.66 lb/day
Ammonia as N N/A
Temperature (Summer) N/A
Temperature(Winter) N/A
pH 9.7 N/A
Fecal Coliform (If sanitary waste is N/A
present)
Total Residual Chlorine (if chlorine is N/A.
used)
16. List all permits,construction approvals and/or applications (check all that apply and provide permit
numbers or check none if not applicable):
Permit
Type Permit Number Type Number
Hazardous Waste (RCRA) NESHAPS (CAA)
UIC (SDWA) Ocean Dumping(MPRSA)
NPDES NC0000361 Dredge or fill (Section 404 or CWA)
PSD (CAA) Other NC Air Permit 04000R19
Non-attainment program Mine Permit No. 06-03, NC AtoC 000361A01
17. List any chemicals that may be discharged (Please list and explain source and potential
amounts.)
See attached CONFIDENTIAL operating status.
Page 4 of 5 C-MI 10/08

NPDES PERMI'L- raPPLICATION - SHORT FORM EC - Minor Industrial
Minor industrial, manufacturing and commercial facilities.
18. Is this facility located on Indian country? (check one)
Yes ❑ No
19. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Andrew G. Bradley SVP Environmental Affairs
Printed name of Person Signing Title
126 N Q
Signature of Applicant Date
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fine of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 5 of 5 C-MI 10/08

• COME
Unimin Corporation—Schoolhouse Quartz Facility

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F���l1t� Information Facility ,x r . s,1 `t
f
F. atude: 35°56'20" ' Sub-Basin: 04-03-06 y ' r ., t ,t ,
Longitude: 81°59'45" Location
L -
uad#: Linville Falls (D11SW) 4 r'
Stream Class: C Trout
Receiving Stream: North Toe River Unimin Corp.-Schoolhouse Quartz Operation
�O�-�h NC0000361
Permitted Flow: 2.16 MGD —

Environmental Affairs
U Corporation
136 Crystal Drive•Spruce Pine,NC 28777
(PHONE)828/766-6081•(FAN 828/7654755
August 30,2010
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Mrs.Dina Sprinkle
NCDENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
Subject: Unimin Corporation's Crystal,Red Hill&Schoolhouse Quartz
Facilities'Production Data
NPDES Permit Nos.NC0084620,NC0085839&NC 0000361
Dear Mrs. Sprinkle:
Please find enclosed production data for Unimin Corporation's Crystal,Red Hill and
Schoolhouse Quartz Facilities (NPDES Permit Nos. NC0084620, NC0085839 and
�.@— 61). This information is being submitted to satisfy the requirements of the
NPDES renewal applications submitted concurrently (renewal applications dated August 30,
2010).
Please note that this information has been stamped Confidential. Unimin
Corporation is requesting that this information be treated as confidential and thereby
protected from public disclosure.
Unimin believes that such information if made public, would divulge technology,
methods and processes entitled to protection as trade secrets of Unimin Corporation.
Accordingly, we are requesting confidentiality of this information under State Statute 143-
215.3.
In support of this request;Unimin Corporation herein avers: �- a
A. The production of high purity quartz is a highly competitive industry in whicMw r
market position is very much dependent on possession of the latest technology and''':-
process development
P �!

v
• Mrs.Dina Sprinkle
August 30,2010
Page 2
B. The processes and technology associated with Unimin's production of high purity
quartz have been consistently treated by Unimin in its operating policies,procedures
and practices as proprietary and confidential trade secrets.
C. Unimin believes that such processes and technology are in its sole possession and
are not generally available to Unimin's competitors or the public.
D. Such confidential processes and technology which have been developed at great
time and expense to Unimin are the property of Unimin and represent a great value
and competitive advantage to its market position and are an integral part of
Unimin's continuous quartz production operation.
E. The unprotected divulgence of such confidential information would result in an .
irreparable harm'to the competitive position of Unimin Corporation in this market.
If you have any questions regarding this matter or require further information,
please do not hesitate to contact me at(828) 765-1114 ext. 13.
Sincerely,
r'
Jeffrey S. Ferguson,P. E.
Environmental Engineer
UNIMIN CORPORATION
c: FA Files,Mke Jussila,Kati Kuchta,Sandy Phillips,Mike Venc&

FIDE 6oI I
CONFIDENTIAL
r
r
s
Unimin Corporation - Production Data
4
L +�
d

r 2�
SEP - 12010
DEfi9R—Vl�<�,TEP QUALITY '
(POINT SOURCE EIZ�

Jr:
NC®ENR UL - 8North Carolina Department of Environment and Natura Res urc-
WATER QUALITDivision of Water Quality P,S;-i,wILL- -EERREGI
Beverly Eaves Perdue Coleen H. Sullins _____ . Dee Freeman
Governor Director Secretary
June 30, 2010
Mr. Jeff Ferguson
Unimin Corporation
PO Box 588
Spruce Pine, North Carolina 28777
SUBJECT: Authorization to Construct
A to C No. 000361AOI
Unimin Corporation
Unimin-Schoolhouse Quartz Facility
Avery County
Dear Mr. Ferguson:
A letter of request for an Authorization to Construct was received May 12, 2010, by the
Division of Water Quality (Division), and final plans and specifications for the subject project
have been reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of modifications to the existing 2.16 MGD Wastewater Treatment Plant, with
discharge of treated wastewater into the North Toe River in the French Broad River Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
Installation of a new 660 ft2 disc vacuum filter with a 125 gpm filtrate pump, a
2,650 cfm vacuum pump and a 40 Hp blower, in conformity with the project
plans, specifications, and other supporting data subsequently filed and approved
by the Department of Environment and Natural Resources.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of '
NPDES Permit No. NC0000361 issued September 26, 2006, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0000361.
The sludge generated from these treatment facilities must be disposed of in accordance
with G.S. 143-215.1 and in a manner approved by the Division.
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 One
Location:512 N.Salisbury St.Raleigh,North Carolina 27604 NorthCarolina
Phone:[phone]\FAX:[phone]\Customer Service:1-877-623-6748 n gin
Intemet:wymmcwaterquality.org
An.Equal Opportunity\Affirmative Action Employer V �/

Mr. Jeff Ferguson
June 30, 2010
Page 2
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those as may
be required by the Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
The Asheville Regional Office, telephone number(828) 296-4500, shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an on site
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted facility
has been installed in accordance with the NPDES Permit, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to: Construction Grants & Loans,
DWQ/DENR, 1633 Mail Service Center, Raleigh, NC 27699-1633.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC)of the
wastewater treatment facilities. The operator must hold a certificate of the type and,,grade at
least equivalent to or greater than the classification assigned to the wastewater treatment
facilities by the Certification Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.0202.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
During the construction of the proposed additions/modifications, the permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all times,
and in such a manner, as necessary to comply with the effluent limits specified in the NPDES
Permit.
You are reminded that it is mandatory for the project to be constructed in accordance
with the North Carolina Sedimentation Pollution Control Act, and when applicable, the North
Carolina Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.

Mr. Jeff Ferguson
June 30, 2010
Page 3
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division in accordance with North
Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Seth Robertson, P.E. at telephone
number(919) 715-6206.
Sincerely,
oleen H. Sullins
MM:sr
cc: Terry Boston, P.E., Zachry Engineering Corporation, 255 E. Hebron St.,
Charlotte NC 28273
Avery County Health Department
I3L Arshe-$ Wegianal 4-ffi.ce Su-age Wiater,woreRI
Technical Assistance and Certification Unit
Point Source Branch, NPDES Program
Michelle McKay, E.I.
ATC File

Unimin Corporation
A To C No. 000361AOI
Issued June 30, 2010
Engineer's Certification
as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe (periodically/weekly/full time)
the construction of the modifications and improvements to the Unimin-Schoolhouse Quartz
Facility, located off US Highway 19E in Avery County for the Unimin Corporation, hereby state
that, to the best of my abilities, due care and diligence was used in the observation of the
following construction:
Installation of a new 660 fe disc vacuum filter with a 125 gpm filtrate pump, a
2,650 cfm vacuum pump and a 40 Hp blower, in conformity with the project
plans, specifications, and other supporting data subsequently filed and approved
by the Department of Environment and Natural Resources.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature Registration No.
Date
Send to: Construction Grants &Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633

K .
b` ;;;
CD�� 1 4 1 L
�.� .
"1+�,.le`:f:4.Xi{sf.5'a: r ..T•1 r_i:nf;Pir:s .:Y.tt^:.
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
March 22, 2010
Carl Horvat
Unimin Corporation
PO Box 588
Spruce Pine NC 28777
SUBJECT: Compliance Evaluation Inspection
Schoolhouse Quartz Facility
Permit No: NC0000361
Avery County
Dear Mr. Horvat:
Enclosed please find a copy of the Compliance Evaluation Inspection Report from
the inspection, which I conducted at the subject facility on March 10, 2010. The facility
was found to be in Compliance with permit NC0000361.
Please refer to the enclosed inspection report for additional observations and
comments. The assistance provided by Steve Taylor during the inspection was greatly
appreciated. If you have any questions, please do not hesitate to call me at 828-296-
4500.
Sincerely,
Keith Hayn
Environmental Sr. Specialist
Enclosure
cc: Stephen Taylor, ORC
Central Files
kii,le F e-s`?
S:\SWP\Avery\VJastevvater\Industrial\Unimin Schoolhouse 00361\CE13-10-101etter.doc
SURFACE WATER PROTECTION—ASHEVILLE REGIONAL OFFICE D,�f One
Location:2090 U.S.Highway 70,Swannanoa, NC 28778 No thCarolina
Phone: [phone]\FAX:[phone]\Customer Service: 1-877-623-6748u1,R
Internet:www.newaterguality.org 61

United States Environmental Protection Agency Form Approved.
E P n/-� Washington,D.C.20460 OMB No.2040-0057
Water Compliance inspection Report Approval expires 8-31-98
Section A: National Data System Coding (i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 INI 2 I5I 31f NC0000361 I11 121 10/03/10 I17 181C 191S1 20� 1
t- Remarks 4= _1
211IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII1II6
Inspection Work Days Facility Self-Monitoring Evaluation Rating 131 QA ---------------------------Reserved----------------------
671 169 70 U4 711 I 72 I N I 73 W 74 751 I I I I I I 180
�—+ Section B: Facility Data
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number)
Schoolhouse Quartz facility 10:00 AM 10/03/10 06/11/01
US Hwy 19-E Exit Time/Date Permit Expiration Date
Spruce Pine NC 28777 11:00 AM 10/03/10 11/02/28
Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data
Stephen Douglas Taylor/ORC/828-765-4251/
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Carl Horvat,PO Box 588 Spruce Pine NC 28777//704-765-4283/ No
Section C: Areas Evaluated During Inspection (Check only those areas evaluated)
Permit gN Flow Measurement IM Operations& Maintenance IM Records/Reports
Self-Monitoring Program RM Facility Site Review FA Effluent/Receiving Waters
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signature(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date ) 1
Keith Haynes ARO WQ//828-296-4500/ 3>I�•�V
Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date
�Cf-7f/�P� ' 6710 Roger C Edwards r `(. ARO WQ//828-296-4500/ 7�7-Z � �
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page# 1

NPDES yr/mo/day Inspection Type 1
3I NC0000361 I11 12I 10/03/10 I17 18ICI
Section D: Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
The facility was operating normally. No problems were noted. The effluent was extremely clear with no
visible suspended solids or color noted.
Page# 2

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 0 311 0/2 01 0 Inspection Type: Compliance Evaluation
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new application? ❑ ❑ ® ❑
Is the facility as described in the permit? ® ❑ ❑ ❑
#Are there any special conditions for the permit? ❑ ❑ M1 ❑
Is access to the plant site restricted to the general public? ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? ❑ ❑ ❑
Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? ❑ ❑ ❑
Is all required information readily available, complete and current? ® ❑ ❑ ❑
Are all records maintained for 3 years(lab. reg. required 5 years)? ❑ ❑ ❑
Are analytical results consistent with data reported on DMRs? ❑ ❑ ❑
Is the chain-of-custody complete? ❑ ❑ ❑
Dates,times and location of sampling
Name of individual performing the sampling
Results of analysis and calibration 93
Dates of analysis
Name of person performing analyses
Transported COCs
Are DMRs complete:do they include all permit parameters? ❑ ❑ ❑
Has the facility submitted its annual compliance report to users and DWQ? ❑ ❑ ® ❑
(If the facility is=or>5 MGD permitted flow)Do they operate 24/7 with a certified operator on each shift? ❑ ❑ Pa ❑
Is the ORC visitation log available and current? K3 ❑ ❑ ❑
Is the ORC certified at grade equal to or higher than the facility classification? Ri ❑ ❑ ❑
Is the backup operator certified at one grade less or greater than the facility classification? I; ❑ 0 ❑
Is a copy of the current NPDES permit available on site? 21 ❑ ❑ ❑
Facility has copy of previous year's Annual Report on file for review? ❑ ❑ ® ❑
Comment:
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ® ❑ ❑ ❑
Page# 3

Permit: NC0000361 Owner-Facility: Schoolhouse Quartz facility
Inspection Date: 03/10/2010 Inspection Type: Compliance Evaluation
Operations & Maintenance Yes No NA NE
Does the facility analyze process control parameters, for ex: MLSS,MCRT, Settleable Solids, pH, DO, Sludge ® n n n
Judge, and other that are applicable?
Comment:
Secondary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? n n ® n
Is the site free of excessive buildup of solids in center well of circular clarifier? 2 D n n
Are weirs level? ® n n n
Is the site free of weir blockage? in n n n
Is the site free of evidence of short-circuiting? lei ❑ n n
Is scum removal adequate? n n ® n
Is the site free of excessive floating sludge? ® n n n
Is the drive unit operational? ® n n n
Is the return rate acceptable(low turbulence)? n In ® n
Is the overflow clear of excessive solids/pin floc? ® n In n
Is the sludge blanket level acceptable?(Approximately''/d of the sidewall depth) n ❑
Comment:
Flow Measurement-Effluent Yes No NA NE
#Is flow meter used for reporting? ® ❑ ❑ n
Is flow meter calibrated annually? ® n n n
Is the flow meter operational? ® n n ❑
(If units are separated) Does the chart recorder match the flow meter? ® n ❑ ❑
Comment:
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? ® n n n
Is sample collected below all treatment units? ® n ❑
Is proper volume collected? ® n n n
Is the tubing clean? ® n n n
#Is proper temperature set for sample storage(kept at less than or equal to 6.0 degrees Celsius)? ® n n n
Is the facility sampling performed as required by the permit(frequency, sampling type representative)? ■ n ❑ n
Comment: Please make sure samples are 100 ml or greater.
Page# 4

Permit: NC0000361 Owner-Facility: schoolhouse Quartz facility
Inspection Date: 03/10/2010 Inspection Type: Compliance Evaluation
Effluent Pipe Yes No NA NE
Is right of way to the outfall properly maintained? 13 ❑ ❑ ❑
Are the receiving water free of foam other than trace amounts and other debris? ER El ❑ ❑
If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ❑
Comment: Extremely fine air bubbles were noted in the receiving stream, giving the
appearance of a pale green color.
Page# 5

. .. ._ - ^'h.•..-^*�.w„a,..xW%saw.•n:.uhu.,mr ,.: u r.�.a+-. ,x..
_ r• - - w.
CSC -E � �1
CDE R MAY -2 7 2010
-: North Carolina Departmenfof Environment and Natural eso rces '
Divisionater Quality. WATER QUALITY SECTION
Beverly Eaves Perdue Co:Of=Wleen H. Sullins ASHEVILL.E REGI
:Governor'' _ = Director" f{:: a.� ¢Secretary I
-. \ - - .. "�."SgQ•rY1c7Ywd..C"Sttt6c!ck.7. l.=a...r..t•1:...:, was.a.�..r,,dv,u,N:'A Kros_..n.T.-+`"�.
May 24,2010 _
CERTIFIED MAIL 7007 0710 0000 5376-6436
RETURN RECEIPT REQUESTED
.Mr.°Andrew G.-Bradley -
Uni.min Corporation
PO Box 589 = _
Spruce Pine, NC 28777 :-
- Subject:"NOTICE OF VIOLATION NOV-2010 -,LR:-0028.'
" - Schoolhouse Quartz Facility WWTP NC000036:1.;
_ "Avery County
Dear Mr. Bradley. Y
This is to inform you that the Division of Water Quality has not-received your-monthly monitoring_report for March
2010 after the required,reporting date. This is in violation of Part II, Condition D.(2) of the.NPDES permit, as well as 15A
NCAC 2& .506(a),-which-requires the submittal'of Discharge Monitoring-Reports- no later than the thirtieth .(301h) day .
following the reporting period, Failure to submit reports-as required will-subject the violator to the assessment of a
civil penalty of up to..$25,000--per violation You will be considered noncompliant-with the self-monitoring requirements_
of your NPDES permit;until the report has been submitted. _ •4=
-- Please submit the-March 2010 DMR report-within 15 days of receipYof this notice if you.haye not yet
.submitted it. To prevent-further action, please submit future monthly reports.within the above-mentioned.
`Aimeframe to avoid further enforcement actions..`:' -
The Division must-take these steps because timely submittal-of discharge-monitoring reports is essential to-the .
efficienf operation' our water,quality programs. We appreciate your assistance in this matter. If you`have any questions.,-
of about this letter or Discharge Monitoring Reports, please contact me at 919-807-6387. _ {
Sincerely,
Bob Guerra
Western Region NPDES Unit
cc:V DWQ'Ash-evillexSLarfacemWater-Protectton�-Superuisor,
Central Files
Enforcement file
1617 Mail Service Center,Raleigh,North Carolina N699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604 1�TOne�_1,
Phone:[phone] FAX:[phone]l Customer Service:1-877-623-6748 ' 1vOlthCar'61m' a-
Internet:www.ncwaterquality.org a�ryy� /�
An Equal OpportunitylAffirmative Action Employer (/yil L L

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
November 20, 2009
Andrew G Bradley, Environmental Affairs VP
Unimid Corporation
258 Elm St
New Canaan CT 06840
Subject: NOTICE OF VIOLATION
NOV-2009-MV-0154
Permit No. NC0000361
Schoolhouse Quartz facility
Avery County
Dear Mr. Bradley:
A review of Schoolhouse Quartz facility's monitoring report for September 2009 showed the
following violation:
Parameter Date Measuring Violation
Frequency
Oil & Grease 09/30/09 Quarterly Failure to Monitor
Remedial actions; if not already implemented, should be taken to correct any problem. If you should
have information concerning the violations or comments which you wish to present, please submit
them to the attention of Keith Haynes of this Office.
The Division of Water Quality may pursue enforcement actions for this and any additional violations.
If you should have any questions, please do not hesitate to contact Mr. Haynes-at 8281296-
4500.
Sincerely,
Roger C. Edwards, Regional Supervisor
Surface Water Protection Section
cc: % RO WQ Central_EitesT .. _
yi ue:.'±".xr�.l.Y(t'i
No°ehCarolina
North Carolina Division of Water Quality 2090 U.S.Highway 70 Swannanoa,N.C. 28778 Phone[phone] Customer Service
Internet: www.ncwaterauality.ora G:\WPDATA\DEMWQ\Avery\00361 Unimin Schoolhouse\nov-2009-mv-0154.doc FAX [phone]
1-877-628-6748

CCDENR y
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H.Sullins Dee Freeman
Governor Director Secretary
April 23, 2010
Unimin
Jeff Ferguson
PO Box 588
Spruce Pine,NC 28777
Unimin
Scott Fortner
P.O Box 588
Spruce Pine,NC 28777
SUBJECT: NPDES Stormwater Compliance Inspection
Unimin-Schoolhouse Facility
Permit No: NCO000361
Avery County
Dear Mr. Ferguson and Mr. Fortner:
This letter is in follow-up to the stormwater compliance inspection conducted on April 13, 2010.
The inspection was performed to evaluate the Unimin-Schoolhouse facility with relation to
stormwater. This site covers approximately 4,000 acres. Only small portions of the site were
evaluated. The portions evaluated were in route to the outfalls associated with the Stormwater
Representative Outfall Status(ROS) granted May 8, 2003. Three Stormwater Discharge Outfalls
(SDO)were observed: MR-1, SCW1-A, and PLT 1.
The.Schoolhouse Facility is covered by NPDES Permit No.NC0000361 which incorporates permit
conditions related to turbidity and stormwater discharges. The Schoolhouse facility discharges to
the North Toe River, a Class C, Trout(C,Tr)waterbody. This portion of the North Toe River is
impaired for turbidity. Due to this impairment, efforts to make improvements throughout the
watershed,are underway. Improvements to stormwater contributions of turbid waters will be
evaluated. The Division suggests that Unimin take a proactive approach to stormwater discharge
improvements and consider the following recommendations to maintain compliance with stream
standards, specifically turbidity.
The current permit incorporates Unimin's old NCG020000 NPDES Stormwater Permit
(NCG020112)for mining industries. The old stormwater permit required annual analytical
monitoring of SDOs which provided little information related to the stormwater basins
effectiveness and compliance with stream standards. The newly issued NCG020000 NPDES
Location:2090 U.S.Highway 70.Swannanoa,North Carolina 28778 One
Phone:[phone] FAX:[phone] Customer Service:1-877-623-6748 NQl'CrlCai'01111a
Internet:www,ncwaterquality,org �gtuNq���
An Equal Opportunity%Affirmative Action Employer 6

I Unimin-Schoolhouse
April 23,2010
Page Two
Stormwater Permit incorporates a tiered response approach to monitoring and better evaluates
stormwater best management practices. The last three years of analytical monitoring performed at
Unimin's three SDOs were reviewed during the inspection. Some of those results could indicate
compliance issues. Ultimately Unimin needs to determine if their operations are contributing to
turbidity standard violations in the receiving waters and, if so,what management practices need to
be initiated to eliminate such conditions. Therefore,it is suggested that, during the next several
rain events Unimin perform analytical monitoring of their SDOs: MR-1, SCW1-A, and PLT 1. To
correlate the SDO results with stream standards, it is also suggested that upstream and downstream
analytical monitoring be performed concurrently. This will allow Unimin to determine if
stormwater control measures are working to optimum efficiency and if stream standards are being
met.
Attached is a map indicating the SDOs along with associated upstream/downstream monitoring
locations. It is also suggested that a qualitative monitoring event for all SDOs take place with one
of these sampling events. This will help Unimin evaluate all drainage areas contributing to,
stormwater discharges and determine if other drainage areas' stormwater control devices need
attention. A general overall observation that would be beneficial to the Unimin Schoolhouse
facility is to view the North Toe River upstream of the facility and then view the river directly
below the facility in the vicinity of Laurel Creek to visually evaluate for changes in turbidity,
during discharge events.
A copy of the current NCG020000 NPDES Stormwater Permit for mining industries is attached for
your reference.
Please contact me at(828) 296-4653 or linda.wig s a,ncdenr.gov,if I can be of any further
assistance.
Sincerely,
Linda Wiggs
Environmental Specialist
Surface Water Protection
Enclosure
cc:_ Central Files
- Asheville`Files.,,;-r --; .
S:\SWP\Avery\Stonnwater\NCG02 Mining\Unimin\CEIschoolhouse4-l0.doc

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. SCE WE
Uni In.''.
' DEC - 3 2009
Schoolhouse Quarti Plant ;VVA.TER OUA"TY SECTION
P.O. BOX 588 L.L�ASHES/IEEE RLGIOf d�1�_O,rPIC'E
107 Harris Mining Company Road -�
Spruce Pine, NO 28777
Phone: [phone] '
Fax: [phone]
December 1, 2009
Roger C. Edwards,Regional Supervisor
NCDENR Surface Water Protection
2090 US Highway 70
Swannanoa,NC 28778
Subject:Notice of Violation
NOV-200941V-0154,
Permit No.NC0000361
Schoolhouse Quartz Facility
Avery County
Dear Mr. Edwards:
In response to the above mentioned NOV; Failure to monitor for the parameter"Oil & Grease"
for the quarter ending 09/30/09: The parameter Oil and Grease was actually sampled on Tuesday
August 18, 2009 and analyzed by Water Quality Labs on Friday September 4, 2009. I simply
failed to report the results on the DMR.
In addition, I failed to report the results of the Chloride Sample which was sampled on Tuesday
August 18, 2009 and analyzed by Meritec Labs on Friday August 21, 2009 as well as the
Toxicity test which passed.
Please find included in this mailing: a copy of the analysis-and an amended Effluent DMR for
the month of August 2009.
I am sorry for any inconvenience this may have caused.
Sincerely,
Steve Taylor
Environmental affairs Supervisor

EFFLUENT
NPDES PERMIT NO. N.C. 0000361 DISCHARGE NO. 001 MONTH August YEAR 2009
FACILITY NAME Uivmin Corporation(Schoolliouse) CLASS 2 P/C COUNTY Avery
OPERATOR IN RESPONSIBLE CHARGE(ORC) Steve Taylor GRADE 2P/C PHONE [phone]
CERTIFIED LABORATORIES (1). Unimin Corporation(Schoolhouse) (2) Pace Analytical Services
CHECK BOX IF ORC HAS CHANGED PERSON(S)COLLECTING SAMPLES Steve Taylor/Operators
Mail ORIGINAL and ONE COP
ATTN: CENTRAL FILES r 1_ I I 1 1 12/1/09
DIV OF WATER QUALITY (SIGMA ' OF OPERATOR IN RESPONSIBLE CHARGE) DATE
1617 MAIL SERVICE CENTFI n _ BY THIS SIGNATURE,I CERTIFY THAT THIS REPORT IS
RALEIGH,NC 27699-1617 ll 2009 ACCURA/ AND COMPLETE TO THE BEST OF MY KNOWLEDGE
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21 0700.,. '9.00 Y '1'.1486 ,Tl20 c.,47.9 `T07r3 ipass
22 0700 9.00 Y 1.0173 7.8 <5 <.1 2.2 10.50 42.4 89.1
N 0.9657.,
<.1 ;. 1.7 --9.77 ;'40 3', 78 7
24 0700 11.00 Y 0.9757 7.9 <5 <.1 1.2 11.82 40.7 96.2
25 0700 :p10.00. Y ` „1.05,49, 7:, <5'.' <.1 ` 3=0` 11.74 44:0 103.3 .
26 0700 6.00 Y 1.0694 7.5 <5 <.1 2.1 12.80 44.6 114.2
0700 r 8.00 B-. 1.0914 7.4 <5 - <,1 3.9 13.14 45.6 119.6'
28 0700 9.50 Y 1.2140 7.5 <5 <.1 1.0 13.84 50.6 140.1
29 0700 4.00:; 'Y . .,1.1198 '.' .. ';1.5 "<5 ,<..1" ''1:9 r :.13.02. ,;467., :..121'.5,..
30 N 0.7788 7.7 <5 <.1 1.6 10.81 32.5 70.2
31' 0700, ' 10.00 Y,. 0.9309` 7.41y <5
<.1 L2, .10.34., ,;38.8, 80.3',
AVERAGE 1.0492 5.00 <5 <.1 1.69 10.93 44.16 96.22 10.8
MAXIMUM 1.2445 8.3 7.20 <5 <.1 3.93 13.84 51.90 140.13 10.8
MINIMUM 0.6737 7.3 <5 <5 <.1 0.60 7.77 32.50 55.85 10.8
Comp.(C)/Grab(G) C G C G G C C C
Monthly Limit 2.16 6/10 450/D 109/D
DEM Fonn MR-1(01/00)

EFFLUENT
Facility Status: (Please check one of the following)
All monitoring data and sampling frequencies meet permit requirements
(including weeldy averages, if applicable)
Compliant
All monitoring data and sampling frequencies do NOT meet permit requirements
Noncompliant
The permittee shall report to the Director or the appropriate Regional Office any noncompliance that
If the facility is noncompliant,please attach a list of corrective actions being taken and a time-table for
"I certify,under penalty of law,that this document and all attachments were prepared under my direction or
Mr. Mike Vencill, Plant Manager
Permittee (Please print or type)
Z127 L'��­ l, I/zpQ
Signature of Permittee*** Date
(Required unless submitted electronically)
PO Box 588, Spruce Pine,NC 28777 [phone] [e-mail] 2/28/2011
Permittee Address Phone Number e-mail address Permit Expiration Date
ADDITIONAL CERTIFIED LABORATORIES
Certified Laboratory(2) Meritech Certification No. 165
Certified Laboratory(3) Tritest Certification No. 067
Certified Laboratory(4) Water quality Labs Certification No. 544
Certified Laboratory(5) Certification No.
PARAMETER CODES
Parameter Code assistance may be obtained by calling the NPDES Unit at(919)733-5083 or by visiting the
Use only units of measurement designated in the reporting facility's NPDES pen-init for reporting data.
No Flow/Discharge From Site: Check this box if no discharge occurs and,as a result,there are no data to be
entered for all of the parameters on the DMR for the entire monitoring period.
x x ORC On Site?: ORC must visit facility and document visitation of facility as required per 15A NCAC 8G.0204.
x Signature of Permittee: If signed by other than the permittee,then the delegation of the signatory authority must be on
file with the state per 15A NCAC 2B .0506(b)(2)(D).

Meritech, Inc.
Environmental Laborabory
m. Laboratory Certification No.165
Contact: Steve Taylor Report Date: 8/24/09
Client: Unimin Schoolhouse
P.O. Box 588
Spruce Pine,NC 28777-0588 Date Sample Rcvd: 8/19/09
Unimin-Schoolhouse
Meritech Work Order# 08190910 Sample: Final Effluent Composite 8/17-18/09
Parameters Result Analysis Date ReportingLimit imit Method
Chloride 10.8 mg/L 8/21/09 0.10 mg/L SM 4500-CI C
E � ��C �
DEC - 3 2009
NEATER QUALITY SECTION
AS1'-+=V1LLE REG'OVAL OFF--ICE
I hereby certify that have reviewed and approve these data.
Laboratory Representative
642 Tamco Road,Reidsville,North Carolina 27320
tel.[phone] fax.[phone]

I� y E,
WATER QUALITY LAB&OPERATION,INC.f
0
P.O. BOX 1167,BANNER ELK, NC 28604 '. DEC m 3 2009
[phone]
CLIENT: UNIMIN SCHOOL LOGIN TIME: 1:30 0ArER QUALITY SECTION
ADDRESS: SAMPLER: (. Arm "'LL I'r`aIONAL OFFICE
CITY: COLLECTED DATE: 18-Aug-09
STATE: REPORTED DATE: 4-Sep-09
I D#:
:>xN !~YSIS:::::: ::::::::::::::::`:::::::::::::::;AAl'S:I NiG![`s:; wlv ; Y$lS :::::IGITH? s =
:'RE L1L79:: ::::::: ::LOCATiOev COfllli?LE3 Efl ::CUUE::
BOD 5 DAY 0.0 2.0 MG/L I 0-Jan-00 SM-521OB WPS
TOTAL SUSPENDED RESIDUE 0 1 MG/L I 0-Jan-00 SM-2540D WPS
BOD 5 DAY 0.0 2.0 MG/L E 0-Jan-00 SM-5210B WPS
TOTAL SUSPENDED RESIDUE 0 1 MG/L E 0-Jan-00 SM-2540D WPS
AMMONIA, NITROGEN 0.00 0.10 MG/L E O-Jan-00 SM-450OF WPS
CFU's
FECAL COLIFORM 0 1 /100 mis U 0-Jan-00 SM-9222D WPS
CFU's
FECAL COLIFORM 0 1 1100 mis E O-Jan-00 SM-9222D WPS
CFU's
FECAL COLIFORM 0 1 /100 mis D O-Jan-00 SM-9222D WPS
CONDUCTIVITY 0.0 20.0 JMHOS/CM U O-Jan-00 SM-2510 B WPS"
CONDUCTIVITY 0.0 20.0 JMHOS/CM E 0-Jan-00 SM-2510 B WPS
CONDUCTIVITY 0.0 20.0 MHOS/CM D SM-2510 B WPS
TURBIDITY 0.10 NTU U SM-2130 B WPS
TURBIDITY 0.10 1 NTU E SM-2130 B WPS
TURBIDITY 0.10 NTU D SM-2130 B WPS
OIL&GF2i4SE <5 - ( 5.Or MG/L---- E 4-Sep�0.9 EPA 1664 A PI
SM-4500-NorgB
TOTAL NITROGEN 0.20 MG/L E SM-4500-NO3 E PI
TOTAL PHOS. 0.10 MG/L E SM-4500-P B PI
MLSS 1 MG/L AB WPS
MLVSS 1 MG/L AB SM-2540 G WPS
MLSS 1 MG/L All WPS
MLVSS 1 MG/L AB SM-2540 G WPS
*-All QC not met. I do not feel that the data has been adversly effected.
@- Blank used too much D.O. #- Seed failed. ^- GGA failed.
REPORTED BY: NC CERTIFIED LAB#544
PAUL ISENHOUR, SUPERVISOR

AAA
. ENR
North Carolina Department of Environment and Natural Resources
Division of Water Q u
��-f ........_..,.,,,....,.a..,,.. .tea.
Beverly Eaves Perdue Coleen H. Sullins �,
Governor Director ; —De reenlan
cret6ry
October 27, 2009
{ OCT 2 9 2009
555 „
Mr. Steve Taylor �� WATER QUALITY SECTION
ASHEVILLE REGIONAL OFFICE
Unimin Schoolhouse Quartz Plant
P.O Box 588
Spruce Pine, NC 28777 :.». >rr.:..,,. ��, _.�_ .. ...•�..u.- ....x .
SUBJECT: North Carolina Wastewater/Groundwater Laboratory Certification (NC WW/GW LC)
Maintenance Inspection
Dear Mr. Taylor:
Enclosed is a report for the inspection performed on August 6, 2009 by Mr. Jason Smith. I apologize for the
delay in getting this report to you. Where finding(s) are cited in this report, a response is required. Within 30
days of receipt; please supply this office with a written item for item description of how these finding(s) were
corrected. For certification maintenance, your laboratory must continue to'carry out the requirements set forth
in 15A NCAC 2H .0800.
Copies of the checklists completed during the inspection may be requested from this office. Thank you for your
cooperation during the inspection. If you wish to obtain an electronic copy of this report by email or if you have
questions or need additional information please contact me at 828-296-4677.
Sincerely,
Gary Francies
Unit Supervisor
Laboratory Section
CC: Jason Smith
Asheville Regional Office
DENR DWQ Laboratory Section NC Wastewater/Groundwater Laboratory Certification Branch .
On
1623 Mail Service Center,Raleigh,North Carolina 27699-1623 iv Ol thCarolina
Location:4405 Reedy Creek Road.Raleigh,North Carolina 27607-6445 �+ rr
Phone:[phone] FAX:[phone] at �l[y
Internet:www.dwglab.org
An Equal Opportunity\Affimiative Action Employer Customer Service:1-877-623-6748 www.ncwaterquality.org

r �
On-Site Inspection Report
LABORATORY NAME: Unimin Schoolhouse Quartz Plant
NPDES PERMIT# NC0000361
ADDRESS: P.O. Box 588
Spruce Pine, NC 28777
CERTIFICATE#: 555
DATE OF INSPECTION: August 6,2009
TYPE OF INSPECTION: Industrial Maintenance
AUDITOR(S): Jason Smith
LOCAL PERSON(S) CONTACTED: Steve Taylor
I. INTRODUCTION:
This laboratory was inspected to verify its compliance with the requirements of 15A NCAC 2H'.0800 for the analysis
of environmental samples.
If. GENERAL COMMENTS:
The laboratory was clean and well organized. The facility has all the equipment necessary to perform the analyses.
Performance testing samples have been analyzed for all certified parameters for the 2009 calendar year and the
graded results were 100%acceptable. Findings A, B, D, E, H,and I are new policies since the last inspection.
III. FINDINGS, REQUIREMENTS,COMMENTS AND RECOMMENDATIONS:
General Laboratory
A. Finding: The balance weights have not been recertified or verified within the past five years.
Requirement: ASTM Class 1. and 2 weights must be verified at least every 5 years. ASTM Class 1 weights
(20 g to.25 kg) and ASTM Class 2 weights (10 g to 1 mg) are equivalent to the NBS Class S weights
specified in 15A NCAC 2H 0805 (a) (7) (K). Ref: North. Carolina Wastewater/Groundwater Laboratory
Certification Policy.
Comment: See attached technical assistance document for more information.
B. Finding:The.meter used to analyze Fluoride has not had the internal temperature sensor verified.
Requirement: All thermometers and temperature measuring devices must be checked every 12.months
against a NIST certified or NIST traceable thermometer and the process documented. The calibration
must be performed at a temperature that corresponds to the temperature used by'the incubator,
refrigerator, freezer, etc. In the case of temperature measuring devices used to perform variable
temperature readings the calibration must be performed at a temperature range that approximates the
range of the samples. The thermometer/meter readings must be less than or equal to 1 °C from the NIST
certified or NIST traceable thermometer reading. The documentation must include the serial number of
the NIST certified thermometer or NIST traceable thermometer that was used in the comparison. Also
document any correction that applies (even if zero) on both the thermometer/meter and on a separate
sheet to be filed. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy.
Comment: All other thermometers and temperature measuring devices in the laboratory have been verified
as required.

Page 2
#555 Unimin Schoolhouse Quartz Plant
pH—Standard Methods, 19th Edition,4500 H+B
C. Finding: No units of measure(S.U.)are documented for pH samples and buffers.
Requirement: All laboratories must use printed laboratory bench worksheets that include a space to enter
the signature or initials of the analyst, date of analyses, sample identification, volume of sample analyzed,
value from the measurements stem, factor and final value to be reported and each item must be recorded
each time samples are analyzed. The date and time BOD and coliform samples are removed from the
incubator must be included on the laboratory worksheet. Ref: 15A NCAC 2H .0805(a)(7)(H).
Total Suspended Solids—Standard Methods, 19th Edition,2540 D
D. Finding: Filters are not weighed to a constant weight after initial washing nor is a dry filter blank analyzed
with each set of samples.
Requirement: If pre-prepared filters are not used, the method requires that filters must be weighed to a
constant weight after washing. In lieu of this process, it is acceptable to analyze a single daily dry filter
blank (i.e., no additional rinsing during the analysis). The acceptance criterion for the blank is a weight
change of less than 4% of the filter's initial weight or 0.5 mg, whichever is less. Ref: North Carolina
Wastewater/Groundwater Laboratory Certification Policy based upon Standard Methods, 201h Edition_,,
2540 D. (3) (a).
E. Finding:A minimum dried residue weight gain of 1 mg is used to determine the reporting limit.
Requirement: The minimum reporting value is established at 2.5 mg/L when 1000 mL of sample is
analyzed. The minimum weight gain allowed by any approved method is 2.5 mg. In instances where the
weight gain is less than the required 2.5 mg, the value must be reported as less than the appropriate value
based upon the volume used. For example, if 500 mL of sample is analyzed and <2.5 mg of dried residue is .
obtained, the value reported would be < .5 mg/L. Ref: North Carolina Wastewater/Groundwater Laboratory
Certification Policy based upon Standard Methods,20th and 21st Editions,2540 D. (3) (b).
F. Finding: Filters are not dried for one hour when the annual drying study is performed.
Requirement: Constant weights must be documented. The approved methods require the following:
"Repeat the cycle of drying, cooling, desiccating, and weighing until a constant weight is obtained or until
the weight change is less than 4% of the previous weight or 0.5 mg, whichever is less." In lieu of this, an
annual study documenting the time required to dry representative samples to a constant weight may be
performed. Verify minimum daily drying time is greater than or equal to the time used for the initial
verification study drying cycle. Drying cycles must be a minimum one hour for verification. Ref: North
Carolina Wastewater/ Groundwater Laboratory Certification Policy based on Standard Methods, 20"
Edition, 2540 D. (3)(c), 2540 B. (3) (b), and 2540 C. (3) (d).
Comment: The initial drying cycle during the study is 30 minutes followed by a 15 minute drying cycle.
Although this appears,to adequately dry the filters, a minimum of one hour is required. Samples analyzed
throughout the year are dried for a minimum of one hour.
Fluoride—Standard Methods, 19th Edition,4500 F-C
G. Finding: The annual distillation study is performed on a steam sample and an effluent sample, rather than
two effluent samples.
Requirement: Manual distillation is not required if comparability data on representative effluent samples
are on file to show that this preliminary distillation step is not necessary; however, manual distillation will
be required to resolve any controversies. Municipal and Industrial Laboratories shall analyze initially four
samples distilled and undistilled from each discharge and; thereafter, analyze two samples a year from each
effluent. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy based upon Code of
Federal Regulations, Title 40, Part 136; Federal Register Vol. 72, No. 47, March 12, 2007; Table 1 B
Footnote 6.

Page 3
#555 Unimin Schoolhouse Quartz Plant
H. Finding: A calibration verification standard (CVS) and blank are not analyzed at the end of the sample
run.
Requirement: The calibration blank and mid-range standard must be analyzed initially (i.e., prior to
sample analysis), after every tenth sample and at the end of each sample group to check for carry over
and calibration drift. If either fall outside established quality control acceptance criteria, corrective action
must be taken (e.g., repeating sample determinations since the last acceptable calibration verification,
repeating the initial calibration, etc.). Ref: North Carolina Wastewater/Groundwater Laboratory
Certification Policy based upon Standard Methods, 20`h Edition, 1020 B.(10)(c), 3020 B. (2) (b), and 4020
B. (2).
I. Finding: The laboratory is not analyzing matrix spikes.
Requirement: Unless the referenced method states a greater frequency, spike 5% of samples on a
monthly basis. Laboratories analyzing less than 20 samples per month must analyze at least one matrix
spike each month samples are analyzed. Prepare the matrix spike from a reference source different from
that used for calibration unless otherwise stated in the method. If matrix spike results are out of control,
the results must be qualified or the laboratory must take corrective action to rectify the effect, use another
method, or employ the method of standard additions. When the method of choice specifies matrix spike
performance acceptance criteria for accuracy, and the laboratory chooses to develop statistically valid,
laboratory-specific limits, the laboratory-generated limits cannot be less stringent than the criteria stated in
the approved method. Ref: North Carolina Wastewater/Groundwater Laboratory Certification Policy.
Recommendation: It is recommended that the spike solution constitutes s1%of the total MS volume.
Recommendation: If the duplicate sample value is near or below the reporting limit, it is recommended that
a Matrix Spike Duplicate (MSD) be analyzed. The MSD fulfills the duplicate required by 15A NCAC 2H .0805
(a)(7)(C).This would result in better statistical results to monitor method and analyst precision.
Comment: See attached technical assistance document for more information.
IV. PAPER TRAIL INVESTIGATION:
The'paper trail consisted of comparing field testing records and contract lab reports to Discharge Monitoring
Reports (DMRs) submitted to the North Carolina Division of Water Quality. Data were reviewed for May 2009. No
transcription errors were detected.The facility appears to be doing a good job of accurately transcribing data.
V. CONCLUSIONS:
Correcting the above-cited findings and implementing the recommendation will help this lab to produce quality data
and meet certification requirements. The inspector would like to thank the staff for its assistance during the
inspection and data review process. Please respond to all findings.
Report prepared by:Jason Smith Date: October 19,2009
Report reviewed by:Tonja Springer Date: October 20, 2009

Analytical Balance Weight verification
Verification may be accomplished by:
1. Sending laboratory weights back to the manufacturer for recertification - reference weights shall
be calibrated by a body that can provide traceability to ASTM specifications, or
2. Checking laboratory weights against certified reference weights (i.e., weights that have been
recertified as above) and found to be within ASTM Class 1 or Class 2 tolerances (see table
below) -often the balance service technician may provide this service.
Note: Although some manufacturers will assign a one-year calibration due date, 5 years is considered
an acceptable calibration interval due to the limited use of the reference weight set.
Documentation of weight verifications or recertification must be maintained for 5 years. If the condition
of a weight(s) is in question at any time due to damage (e.g., corrosion, nicks, scratching, etc.), the
laboratory must have that weight(s) re-verified as described above.
Maximum tolerances (Ref. ASTM E 617-97, 2003)
Denomination Maximum tolerance for
ASTM Class 1 and 2
weights, ± m
500 g 1.2
300 g 0.75
200 g 0.50
100 g 0.25
50 g 0.12
30 g 0.074
20 g 0.074
10 g 0.074
5 g 0.054
3 g 0.054
2 g 0.054
1 g 0.054
500 mg 0.025
300 mg 0.025
200 mg 0.025
100 mg 0.025
50 mg 0.014
30 mg 0.014
20 mg 0.014
10 mg 0.014
5 mg 0.014
3 mg 0.014
2 mg 0.014
1 mg 0.014

r -
North Carolina Wastewater/Groundwater Laboratory Certification
Matrix Spiking Policy and Technical Assistance (10/22/2009)
Policy Statement
Unless the referenced method states a greater frequency, spike 5% of samples on a monthly basis.
Laboratories analyzing less than 20 samples per month must analyze at least one matrix spike (MS) each
month samples are analyzed. Prepare the MS from a reference source different from that used for
calibration unless otherwise stated in the method. If MS results are out of control, the results must be
qualified or the laboratory must take corrective action to rectify the effect, use another method, or employ ,
the method of standard additions. When the method of choice specifies MS performance acceptance
criteria for accuracy, and the laboratory chooses to develop statistically valid, laboratory-specific limits, the
laboratory-generated limits cannot be less stringent than the criteria stated in the approved method.
When'spiking with multi-component standards, if the method does not specify the spiking components,
the Laboratory Control Spike (LCS)and MS must contain all analytes that are reported.
If the unspiked sample result is in the'top 40% of the calibration range, the sample should be diluted and
'the MS prepared using the diluted sample. The recovery of;the MS samples must be bracketed by the
calibration range.
The volume of spike solution used in MS preparation must in all cases be <_ 10% of the total MS volume. It
is preferable that the spike solution constitutes s 1% of the total MS volume so that the MS can. be
considered a whole volume sample with no adjustment by calculation necessary, If the spike solution
volume constitutes>1% of the total sample volume, the sample concentration or spike concentration must
be adjusted by calculation.
•Technical Assistance
Spike Preparation
The spike concentration may be set at either 5 to 50 times the Method Detection Limit(as determined by ,
the Method Detection Limit or MDL study) for the analyte, or at 1 to 10 times the ambient level (average
concentration) of the analyte in samples. There are.3 options for preparing spikes:
Option 1 (Recommended - easiest) - If the.spike solution volume is equal to 1% or less of the
total sample volume, direct subtraction of the unspiked sample is allowed. When the volume of
the standard solution spiked into a sample or a sample extract is less than 1% of the total volume
then the final concentration need not be adjusted (e.g., 10 uL of spike solution,added to a 1 mL
final extract results in only a negligible 1%change in the final extract volume).
Option 2 Adjust spike solution to a known volume with sample, In this case the: sample
concentration must be adjusted. When the volume of spike solution exceeds 1% of the total MS
volume the sample concentration must be adjusted prior to determining spike recovery.
Option 3 (Not recommended—most difficult)-Add spike solution to a full volume sample. In this
case, the spike concentration must be adjusted. When the volume of spike solution exceeds 1%
of the total MS volume the spike concentration must be adjusted prior to determining spike
recovery.
r

Spike Preparation Examples
Option 1 - If the spike solution volume is equal to 1% or less of the total sample volume, direct subtraction
of the unspiked sample is allowed.
Option 1 Example:
0.5 mis of a 1000 mg/L standard spike added to 100 mis of sample has a theoretical value of 5
mg/L.
(A) The spiked sample recovery is 5.1 mg/L r
(B) If the unspiked sample result is 0.5 mg/L
(C) Theoretical value is 5.0 mg/L
The Percent Recovery = spiked sample recovery (A) — unspiked sample result (B) divided by
theoretical value (C)X 100 or
5.1 —0.5 X 100 = 92% recovery A—B X 100 = Percent recovery
5.0 C
Option 2 - Adjust spike solution to a known volume with sample. In this case the sample concentration
must be adjusted.
Option 2 Example 1:
10 mis of spike (concentration 50 mg/L) brought to 100 mis.with sample the theoretical MS value is
5 mg/L. .
(A) The spiked sample recovery is 5.1
(B) If the unspiked sample result is 0.5 mg/L
(C) %sample is 0.90(sample volume used (90)divided by final volume (100))
(D) Theoretical value is 6.0 mg/L
The Percent Recovery = spiked sample recovery (A) — (unspiked sample result (B) x % sample
(C)) divided by theoretical value(D.)X 100 or
5.1 —(0.5 x 0.9)X 100= 93% recovery A— B x C X 100 = Percent recovery
5.0 D
Option 2 Example 2: Larger spike volume
25 mis of spike (concentration 50 mg/L) brought to 250 mis with sample the theoretical MS value
is 5 mg/L.
(A) The spiked sample recovery is 5.6
(B) If the unspiked sample result is 0.5'mg/L
(C) % sample is 0.90 (sample volume used (225)divided by final volume (250))
(D) Theoretical value is 5.0 mg/L
The Percent Recovery = spiked sample recovery (A) — (unspiked sample result (B) x % sample
(C)) divided by theoretical value (D)X 100 or
5.6—(0.5 x 0.9)X 100 = 103% recovery A— B x C X 100= Percent recovery
5.0 D

Option 3 - Add spike solution to a full volume sample. In this case the spike concentration must be
adjusted.
Option 3 Example:
5 mis of a spike (concentration 100 mg/L) is added to 100 mis of a sample (105 mis final volume).
(A)' The spiked,sample recovery is 5.1
(B) If unspiked sample result is 0.5 mg/L
(C) Spike cone. adjustment is 0.9524 (sample volume .(100) divided by. sample + spike
volume(105))
(D) Actual spike value is 4.7619 (Theoretical value(5 mg/L based on 100 ml sample)x.C)
The Percent Recovery=spiked sample recovery(A)x(sample volume divided by sample volume
+spike volume(C))—unspiked sample result(B) divided by Actual spike value (D)X 100 or
(5.1x 100 )-0.5 (AxC)—B X100 =91.5%
100+51 X 100 91.5% recovery D
4.7619
Corrective Action/Qualifications for MS
Spike accuracy is usually based on a range of percent recovery (e.g., 80-120%). Refer to the method of
choice for specific acceptance criteria for the matrix spikes until the laboratory develops or adopts
statistically valid, laboratory-specific performance criteria for accuracy. If a `MS fails, and the LCS is
acceptable, qualify the data for the MS sample. Repeated failures for a specific matrix may require use of
an alternate method or method of standard addition. Base the sample batch acceptance on the results of
the LCS analyses (and other quality control results) rather than the MS alone, because the matrix of the
spiked sample may interfere with the method performance. If a MS and the associated LCS fail, re-
prepare and reanalyze affected samples.
Post Digestion Spikes (PDS)
Post Digestion Spikes (PDS) are used for some analyses (e.g., metals) to assess the ability of a method
to successfully recover target analytes from an actual sample matrix after the digestion process has been
performed. The PDS results are used with MS results to evaluate matrix interferences. The MS and PDS
should be prepared from the same environmental sample. A PDS is not to be analyzed in place of a MS.
Post Digestion Spikes must be reported as post-digested and must not be misrepresented as pre-
digested spikes. (Exception: TCLP and SPLP samples are always spiked post digestion.)
Corrective Action/Qualifications for Post Digestion Spikes
In general, if the MS recovery for an analyte does not fall within the quality control acceptance range but
the PDS,recovery is acceptable, then a matrix affect (associated with the preparatory process) should be
suspected and the unspiked sample results must be qualified on the basis of the matrix spike recovery.
However, when historical data for the effect does not exist, the laboratory would normally be expected to
perform a second digestion and reanalysis of the MS to confirm the result. The result would be confirmed
if the MS recoveries and PDS recoveries for both sets of.analyses were similar in magnitude and bias.
When both the MS recovery and PDS recovery for a particular analyte falls outside of quality control
acceptance range in the same manner (i.e., the PDS and MS failures are of similar magnitude and the
direction of bias is the same), confirmatory analyses are unnecessary but the data must be qualified.

Parameters Excluded from MS Requirements
Acidity Alkalinity
BOD/CBOD Aquatic Humic Substances
Chlorophyll All Bacteriological Parameters
Conductivity Dissolved Oxygen
Ignitability All Residues
Paint Filter Test Turbidity
pH Temperature
Salinity Sulfite
Total Residual Chlorine Vector Attraction Reduction (All Options)
(Field Laboratories and Field Setting analyses are exempt.)

9 Michael F.Easley,Governor
William G.Ross Jr.,Secretary
rNorth Carolina Department of Environment and Natural Resources
—I
.� Coleen H.Sullins,Director
Division of Water Quality
November 25, 2008
555
Mr. Steve D. Taylor
Unimin Schoolhouse-Quartz Plant
P.O. Box 588
Spruce Pine, NC 28777-
SUBJECT: Wastewater/Groundwater Laboratory Certification Renewal
Dear Mr. Taylor:
The Department of Environment and Natural Resources, in accordance with the provisions of NC GS.143-215-
.3 (a) (10), 15 NCAC 2H .0800, is pleased to renew certification for your laboratory to perform specified
environmental analyses required by EMC monitoring and reporting regulations 15 NCAC 2B .0500, 2H .0900 and
2L .0100, .0200, .0300, and 2N .0100 through .0800.
Enclosed for your use is a certificate describing the requirements and limits of your certification. Please review
this certificate to insure that your laboratory is certified for all parameters required to properly meet your
certification needs.
Please contact us at 919-733-3908 if you have questions or need additional information.
Sincerely,
1d4
Pat Donnelly
Certification Branch Manager
Laboratory Section
Enclosure �:acs ' j
cc: Jason Smith ;
Gary Francies ® !
Asheville Regional Office
DEC 3 0 2008
' WATER QUALITY SECTION
i' ASHEVILLE REGIONAL OFFICE
C
WbilhCarolina
Naturall
Laboratory Section 1623 Mail Service Center;Raleigh,NC 27699-1623 Phone[phone]
Location: 4405 Reedy Creek Road;Raleigh,NC 27607 FAX [phone]
Internet: www.dwglab.org/Customer Service 1-877-623-6748
An-Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

STATE OF NORTH CAROLINA DEPARTMENT OF THE
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
LABORATORY CERTIFICATION PROGRAM
In accordance with the provisions ofN.C.G.S. 143-215.3(a)(1), 143-215.3(a)(10)and NCAC 2H.0800:
dr
rt
T
UNIMIN SCHOOLHOUSE QUARTZ PLANT
Is hereby certified to perform environmental analysis as listed on Attachment I and report monitoring data to DWQ for
compliance with NPDES effluent, surface water,groundwater, and pretreatment regulations.
By reference 15A NCAC 2H.0800 is made a part of this certificate.
This certificate does not guarantee validity of data generated,but indicates the methodology, equipment,quality control procedures,
records, and proficiency of the laboratory have been examined and found to be acceptable.
This certificate shall be valid until December 31, 2009
Certificate No. : 555
Pat Donnelly

Attachment
North Carolina Wastewater/Groundwater Laboratory Certification
Certified Parameters Listing
ab Name: Unimin Schoolhouse Quartz Plant Certificate Number: 555
Address: P.O.Box 588 Effective Date: 01/01/2009
Spruce Pine,NC 28777- Expiration Date: 12/31/2009
Date of Last Amendment:
The above named laboratory,having duly met the requirements of 15A NCAC 2H.0800,is hereby certified for the measurement of the parameters listed below.
CERTIFIED PARAMETERS
INORGANICS
FLUORIDE
Std Method 4500 F C
pH
Std Method 4500 H B
RESIDUE SETTLEABLE
Std Method 2540F
RESIDUE SUSPENDED
Std Method 2540D
TURBIDITY
Std Method 2130E
This certification requires maintance of an acceptable quality assurance program,use of approved methodology,and satisfactory performance on evaluation samples. Laborator
snhiert to civil nenalties`and/or decertification for infractions as set forth in 15A NCAC 21-1.0807.

Michael F.Easley,Governor
Q� W`QTFiQ William G.Ross Jr.,Secretary
North Carolina Department of Environment and Natural Resources
Uj r Coleen H.Sullins,Director
Division of Water Quality
["ILE COPY
Asheville Regional Office
SURFACE WATER PROTECTION
November 26, 2008
CERTIFIED MAIL
RETURN RECEIPT REQUESTED 7007 1490 0004 0713 9189
Andrew G Bradley, Affairs Environmental VP
Unimin Corporation
258 Elm St
New Canaan CT 06840
Subject: NOTICE OF VIOLATION
NOV-2008-LV-0077
Schoolhouse Quartz facility.
Permit No.,NC0000361
Avery County
Dear Mr Bradley: _.
A review of the facility's June 2008 self-monitoring report revealed the following violation:
Parameter Date Measuring Violation
Frequency
Oil & Grease 06/30/08 Quarterly Failure to monitor
To prevent further action, carefully review this violation and respond in writing to this office within
fifteen (15) working day of receipt of this letter. You should address the causes of noncompliance
and all actions taken to prevent the recurrence of similar situations. If you should have any
questions, please do not hesitate to contact Keith Haynes at 828/296-4500.
Sincerely,
Roger C. Edwards, Regional Supervisor
Surface Water Protection
cc: Central Files
G:\WPDATA\DEMWQ\Avery\00361 Unimin Schoolhouse\NOV-2008-MV-0077.doc NorthCarolina
�aturalfy
orth Carolina Division of Water Quality 2090 U.S.Highway 70 Swannanoa,N.C.28778 Phone[phone] Customer Service
n met: www.ncwaterquality.orq FAX [phone] 1-877/623-6748

15D 41 -21L 10Y11"
MAR 2 8 2007
Schoolhouse Quartz Plant .
P.O. Box 588
107 Harris Mining Company Road WATER QU,gLITY SECTION
Spruce Pine, NC 28777 x i3 ASHEVILLE REGIONAL OFFICE
Phone: [phone] ,( _�
Fax:[phone]
March 15,2007
Roger C. Edwards,Regional Supervisor
NCDENR Surface Water Protection
2090 US Highway 70
Swannanoa,NC 28778
Subject: Notice of Violation
NOV-2007-MV-0044
Permit No.NC0000361
Schoolhouse Quartz Facility
Avery County
Dear Mr. Edwards:
We failed to monitor for the parameter"Oil& Grease"for the quarter ending 12/31/06. This was
the first instance in which we had been required to monitor O&G, and the failure to sample was
simply an oversight on my part. We have already monitored this parameter for the first quarter of
2007 and it has been added to our sample calendar to ensure that it will not be missed in the
future.
Sinc rely,
Steve Taylor
ORC for the Schoolhouse Quartz Facility

° �F eWATFF Michael F.Easley,Governor
Q William G.Ross Jr.,Secretary
\� G North Carolina Department of Environment and Natural Resources
tom'- Alan W.Klimek,P.E.Director
Division of Water Quality
O �
Asheville Regional Office
..A.1.wvrf.vcrow+r..c!nvs:•,m. .::l.r�•12'-.F� >..iiit..5-S r
SURFACE WATER PROTECTIONI L
�a
y
March 12, 2007
CERTIFIED MAIL
RETURN RECEIPT REQUESTED 7006 2150 0005 2459 7292
Mr. Steve Taylor
Unimin Corporation
Post Office Box 588
Spruce Pine, North Carolina 28777
Subject: NOTICE OF VIOLATION
NOV-2007-MV-0044
Permit No. NC0000361
Schoolhouse Quartz facility
Avery County
Dear Mr. Taylor:
A review of Schoolhouse Quartz facility's monitoring report for December 2006 showed
the following violations:
Parameter Quarter Measuring Violation
Ending Frequency
Oil & Grease 12/31/06 Quarterly Failure to Monitor
Remedial actions should be taken to correct this problem. The Division of Water Quality may pursue
enforcement action for this and any additional violations of State law.
Carefully review these violations and deficiencies and respond in writing to this office within 30
working days of receipt of this letter. You should address the causes of non-compliance and all-
actions taken to prevent the recurrence of similar situations. If you should have any questions,
please do not hesitate to contact Mr. Larry Frost at [phone].
Sincerely,
'�c�✓t �-, ��tC�Z-GG�J
Roger C. Edwards, Regional Supervisor
Surface Water Protection
cc: WQ Central Files
NPDES Unit
No thCarolina
t 2090 U,,..�S.Highway 70, Swannanoa,N.C. 28778 828/296-4500(Telephone) 828/299-7043(Fax) Customer Service 877-623-6748 Alah ally
'f,

C \N A rF9 - Michael F.Easley,Governor
William G.Ross Jr.,Secretary
r North Carolina Department of Environment and Natural Resources
p Alan W.Klimek,P.E.Director
Division of Water Quality
December 22, 2006
555 -
Mr. Steve Taylor
Unimin Corporation Schoolhouse Quartz Operation
P.O. Box 588
Spruce Pine, NC 28777-
SUBJECT: Wastewater/Groundwater Laboratory Certification Renewal
Dear Mr. Taylor:
The Department of Environment and Natural Resources, in accordance with the
provisions of NC GS 143-215-.3 (a) (10), 15 NCAC 2H .0800, is pleased to renew
certification for your laboratory to perform specified environmental analyses required by
EMC monitoring and reporting regulations 15 NCAC 2B .0500, 2H .0900 and 2L .0100,
.0200, .0300, and 2N .0100 through .0800.
Enclosed for your use is a certificate describing the requirements and limits of your
certification. Please review this certificate to insure that your laboratory is certified for all
parameters required to properly meet your certification needs.
Please contact us at 919-733-3908 if you have questions or need additional
information.
Sincerely,
la
Pat Donnelly
Branch Manager
Enclosure
•f
cc: Gary Francies
Ashesville Regional Office a
C E V F
DEC 2 0 2006 r
WATER C<U.A'.JTY SECTIC]NOorthCarolina
AS LEViLLE nE—;,.- I_Cc-F Qtllllll��l t
I
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone] Cusfoiner Service
Internet: www.ncwaterqualitv.oig Location: 512 N.Salisbury St. Raleigh,NC 27604 Fax [phone]
An Equal Opportunity/Affirmative Action Employer—50%Recycledl10%Post Consumer Paper

STATE OF NORTH CAROLINA DEPARTMENT OF THE
ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
LABORATORY CERTIFICATION PROGRAM
In accordance with the provisions ofN.C.G.S.143-215.3(a)(1), 143-215.3(a)(10)and NCAC 2H.0800:
SCAT'�� ,
�f�`y M^Y zp rrys
1 r o
`••• ass£QUA�G
-F
UNIMIN CORPORATION SCHOOLHOUSE QUARTZ OPERATION
Is hereby certified to perform environmental analysis as listed on Attachment I and report monitoring data to DWQ for
compliance with NPDES effluent, surface water,groundwater, and pretreatment regulations.
By reference 15A NCAC 2H.0800 is made a part of this certificate.
This certificate does not guarantee validity of data generated,but indicates the methodology,equipment,quality control procedures,
records, and proficiency of the laboratory have been examined and found to be acceptable.
This certificate shall be valid until December 31,2007
Certificate No. 555 /1
Pat Donnelly

Attachment
North Ca " i Wastewater/Groundwater Laboratory Certifica
Certified Parameters Listing
Unimin Corporation Schoolhouse Quartz Opera Certificate Number: 555
,ress: P.O.Box 588 Effective Date: 01/01/2007
Spruce Pine, NC 28777- Expiration Date: 12/31/2007
Date of Last Amendment:
above named laboratory,having duly met the requirements of 15A NCAC 2H.0800,is hereby certified for the measurement of the parameters listed below.
CERTIFIED PARAMETERS
ORGANICS
UORIDE
itd Method 4500 F C
itd Method 4500 H B
:SIDUE SETTLEABLE
itd Method 2540F
:SIDUE SUSPENDED
itd Method 2540D
RBIDITY
itd Method 2130B
s certification requires maintance of an acceptable quality assurance program,use of approved methodology,and satisfactory performance on evaluation samples. Laboratories are
)ject to civil penalties and/or decertification for infractions as set forth in 15A NCAC 2H.0807.

z
F
..mew ._.�._ _-•—•-.���..���...�_..�._
-� I�vs
l.-
h � �

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date M 1
pH MeterCalibration
N
q , (should be 92-102%)
1{0,p 1
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week I I of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent ► •' ® 7 o2l 11110 9.OZ, 'ry
upstrm 1) I� 6 0� 1 D 30 1�,`L g U -1
dnstrm (Oft )N o , Z
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than.1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date D 2bo
pH MeterCalibration
slope% ✓y (should be 92-102%)
pH=4 Y'1
pH=10 1v'C7
7.00 ; ,q
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units. must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 7 U 7oZ
upstrm r I.3g Zj b
dnstrm g3
*A minimum of 5%of all samples must be duplicates.The control limit is plus or minus.I units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2:8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit,therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
_ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date 0
pH MeterCalibration
slope% Ito to (should be 92-102%)
pH=4 q Lj
pH=10
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH .
collected/
analyzed date time time sample pH Reported
[e'ffluent
ample by collected collected run Temp value duplicate* Value
a.O ow"'? 9 to oil
pstrm
nstrm
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1:8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
i
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
�[ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date
pH MeterCalibration
slope% (should be 92-102%)
pH=4 L(tb
pH=10 ) -5
7.00 7�
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent sc0 4'/
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than.1. This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date
pH MeterCalibration
slope% ,� (should be 92-102%)
pH=4
pH=10 •�
7.00 Z
Run effluent samples daily - pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
{ analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent /D ® ' 7
upstrm A N •�v I H"Q
dnstrm MW L TK
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
�. SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date J
pH MeterCalibration
Pslope% /2 (should be 92-102%)
pH=4
pH=101/0-0
7'.00 7 U
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week I I of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 5 d IM 13, S-0 2114 �
upstrm
dnstrin
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1. This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMI N
�. _ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date �!
pH MeterCalibration
slope% (should be 92-102%)
pH=4
pH=10 /O ro
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time ' sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent orito 1
u pstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
l
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date 1
pH MeterCalibration
slope%o (should be 92-102%)
pH=4
pH=10 090
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are'standard units must be run within 15 min
three times/week I I of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 0 ) r� 07 3 "
upstrm 10 .1 Y1
dnstrm 0 2
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
_ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date
_4!�(
pH MeterCalibration
slope% (f 0• (should be 92-102%)
pH=4
pH=10 (Go
7.00 1 W
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp I value duplicate* Value
effluent 0?d�fa 3• % 1'� ��
upstrm
dnstrm
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
Ce
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date
pH MeterCalibration
slope% O (should be 92-102%)
pH=4
pH='10
7.00
Run-effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard-units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent VH /a
upstrm 1 UO 1
dnstrm
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.I units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals .11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date '7 L14) Y
pH MeterCalibration
slope% ti 9 (should be 92-102%)
pH=4
pH=10
7.00 17
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
_pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp I value duplicate Value
effluent (q >D 1 O D r
-21
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus .1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
�. SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date
_X4
pH MeterCalibration
slope% A I ( (should be 92-102%)
pH=4
pH=10
7.00 p Z
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 9, to °1
_upstrm W - r
dnstrlm O� �r• �Z
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the ,
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals .11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
C
SQP Lab pH Sheet Form21: Revision 8 Oct 1,.09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date a 1
pH MeterCalibration
slope% (should be 92-102%)
pH=4
pH=10
7.00 <j
jV [EJ
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 5 14jr I
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
( SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date .0 7 h
pH MeterCalibration
slope% y,2 (should be 92-102%)
pH=4 �I44
pH=10
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 1I3 TO 0 0.7
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals .11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
{ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date `7 . 1
pH MeterCalibration
slope% (should be 92-102%)
pH=4 .,
pH=10 i ° 0
7.00 <7-v
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week I I of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
rudnstrm
ffluent
pstrm V.+ w ( I I 1 q 0 2 ° y r,\ 4 ( ® `� C
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus .1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than.1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
C _ SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date
pH MeterCalibration
slope% j, (should be 92-102%)
pH=4 Xcj
pH=10 t�)e 0
7.00 T O G,
Run effluent samples daily - pH samples are grabs&
Run stream.samples All pH units are standard units must be run within 15 min
three,times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Nalue
effluent l ' I 1 1312. 9 A)5 03 ok cc)
upstrm as S I,4 otj l 7.5dnstrrn (�� W - I 1410 1�20 22•0 7°
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example�2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
r
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
( SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date <-7 I(o t L
pH MeterCalibration
slope% Q-7, I (should be 92-102%)
pH=4 `t% p
pH=10 k p,-D
7.00 = o
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 16 14 17-1(s 12- 2-- �-
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than.1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date -7 f-7 P
pH MeterCalibration
slope% 019 ,7 (should be 92-102%)
pH=4 L4 ,6
pH=10 .
7.00 -7
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week I I of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent -1 I V k 2-4 0
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus .1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09
.d

UNIMIN
C SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date 1 I
pH MeterCalibration
slope% I,Z (should be 92-102%)
pH=4 t1D
pH=10 01
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent ( I t4M i%4 0 gs 3
upstrm prj U , I r 00 te i,i(
dnstrm yr\ P zi 1 Iq 79
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample Y
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date
pH MeterCalibration
slope% c , (should be 92-102%)
pH=4 y
pH=10 0 0
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH. Reported
sample by collected collected run Temp value duplicate* Value
effluent I ci I q-L-
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than.1. This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH.
Standard Methods, 19th edition 4500-H
Date V, 4' gar
pH MeterCalibration
slope% (should be 92-102%)
pH=4
pH=10 ,
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
_ collected/
analyzed date time time sample pH Reported
sample by collected collected rung Temp value duplicate* Value
effluent
upstrm
dnstrm
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than.1. This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date 0 a1 abf�
pH MeterCalibration
slope% 6, (should be 92-102%)
pH=4rT76e—L ,-
y-0
pH=10 (D b
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent -7 fa 673 6 0 Y-1 L
upstrm /0 J$' Z
dnstrm 1b 2V
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date 07 a 1)a I Ll
pH MeterCalibration
slope%o tl .Z (should be 92-102%)
pH=4 910
pH=10 .0-0
7.00 7
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent A 4 4 0 72 A),U '7,
upstrm
dnstrm
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than.1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
- SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date ool.l
pH MeterCalibration
slope% a Q (should be 92-102%)
pH=4
pH=10 ,� u
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate Value
effluent Q-7 07 b 073� a �,q , °I
upstrm 1 10 310 [L `-11 +k C.q 0
dnstrm Ip 3' a A �y
*A minimum of 5% of all samples must be duplicates.The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
�-- SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods,19th edition 4500-H
Date
pH MeterCalibration
slope% (should be 92-102%)
pH=4 K')pH=10 7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 1 ph 07 3 0 0 S Ad, 0 1 1
upstrm -F
dnstrim
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals .09 which is less than ..1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date d 7 P,5 SDI L
pH MeterCalibration
slope% '9 y (should be 92-102%)
pH=4
pH=10 r 0 -0
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent v 06 O'3 3I .2x 0 T
upstrm ,7
dnstrm 2�2
*A minimum of 5% of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run: Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
- SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date �0
pH MeterCalibration
slope% 0"- (should be 92-102%)
pH=4 •
pH=10
7.00 ,00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent
upstrm.
dnstrm
7-1
*A minimum of 5%of all samples must be duplicates. The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than.1. This sample would
be OK. Example 2: 8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
( SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date 21 d� d61�
pH MeterCalibration
slope% (should be 92-102%)
pH=4
pH=10
7.00 61
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent b X`7 ZT, 9
u pstrm
dnstrm
*A minimum of 5%of all samples must be duplicates.The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be.OK. Example 2: 8.51 minus 8.40 equals .11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
r
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UNIMIN
(r SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
ate_7/a
7 4/
pH IVleterCalibration
slope% (should be 92-102%)
pH=4 b
pH=10
7.00
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent N U 2-1 , lv`� �
u pstrm
dnstrm '2
*A minimum of 5%of all samples must be duplicates.The control limit is plus or minus .I units pH. If the
sample result falls outside of this established control limit, corrective action must be taken and the sample
must be then be re-run. Example 1: 8.51 minus 8.42 equals.09 which is less than .1.This sample would
be OK. Example 2: 8.51 minus 8.40 equals .11 which is greater than .1. This sample would be outside the
control limit, therefore corrective action must be taken and the sample re-run.
notes:
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

UMMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For pH
Standard Methods, 19th edition 4500-H
Date o�r lr q
pH MeterCalibration
slope% q 1r15 (should be 92-102%)
pH=4 L/O
pH=10 to 0
7.00 , 0
Run effluent samples daily pH samples are grabs&
Run stream samples All pH units are standard units must be run within 15 min
three times/week of collection.
pH
collected/
analyzed date time time sample pH Reported
sample by collected collected run Temp value duplicate* Value
effluent 41 ? 1,q aY ') 22-5 r7 ?
upstrm 1
dnstrm It 0(
*A minimum of 5%of all samples must be duplicates.The control limit is plus or minus.1 units pH. If the
sample result falls outside of this established control limit,corrective action must be taken and the sample
must be then be re-run. Example 1:8.51 minus 8.42 equals.09 which is less than.1.This sample would
be OK. Example 2:8.51 minus 8.40 equals.11 which is greater than .1.This sample would be outside the
control limit,therefore corrective action must be taken and the sample re-run.
notes:
ti
SQP Lab pH Sheet Form21: Revision 8 Oct 1, 09

SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For TSS
Standard Methods 19th Edition 2540D
Samples for Week: (A Date of Analysis: M 1 I u
Analytical Balance Calibration: 1gram= ), 060 Oven Temp: 1() should be 103-105 C
time in oven: )d time out of oven:' 5Z Tsamples should stay in oven at least
Time of Analysis: 3 one hour&15 minutes in desicator
Effluent samples must be 24 hour composite samples,stream samples are grabs
Sampler Amount Initial Wt. Wt. Of Filter Final Wt.
pan /Analyst Date Sample Filtered of Filter +Residue of residue TSS Reported
# ID Collecte ID mis (grams) (grams) (grams)** mg/I Value
2 0%,KqP C orN + i 2 U l d v 0 °V , g.o
3 Dv� 04 JPqfgam 401 b 01-/V� 8,14 g,t1
4 690 rs Do4w, I V, g I r q 3 06 LN •V 94
5 dA ot 9 ,, , J3->-? 30I u 2• G
7 s M53 b [ I W - / 4 O U •61.4-,lZ
8 0 ✓ '�i T /a47 G U I . _.3 Z, G�
9 6u j ua� U I-P-L 1,103 6 0(Q l
10 olio b� 9 I MW -1( o011.43 R ILP v
11 670 F. I l la 3 t. /o1 D o(A I'Li L
12 0 t 1111- �� f oo a2la, C
. ^ ' 13 4ry1� 1= ,1 IL - asS do
14 1 d270 k I M1 0 a•a �•
15 /12 ' 1,290
16
17
18
*Total Suspended Solids=Final Residue(g)X 1000(mg/q/)X 1000(ml/1)
Sample Filtered (ml)
**Report all samples with a weight gain of<.0025g as<5.0 mg/I
***The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 15%. Example.:8.8-8.2=.6(dift), .6divided by 8.5(avg)equals.07 or 7%. If the
relative percent difference exceeds 15%,then the sample should be re-analyzed and the results noted_
difference average relative percent difference
1-0 6
notes:
SQP Lab TSS Data Log Form22: Revision 7 Oct 1, 2009

SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For TSS
-_ Standard Methods 19th Edition 2540D
Samples for Week: b /c r 0 ' 1' Date of Analysis: D a
Analytical Balance Calibration: 1gram=J1007J Oven Temp: IVtf should be 103-105 C
time in oven: 10-.C3 time out of oven: a- samples should stay in oven at least
Time'of Analysis: 6 one hour&15 minutes in desicator
Effluent samples must be 24 hour composite samples, stream samples are grabs
Sampler Amount Initial Wt. Wt.Of Filter Final Wt.
pan /Analyst Date Sample Filtered of Filter + Residue of residue TSS Reported
## ID Collected ID mis (grams) (grams) (grams)** mg/1 Value
1 L
2 0-2/s' 0 G
3 6015 V a5 GU 13 (P-
4 13- 2 2
5 ?,-I, GS'b
6 t3 V1(b
7 ta? 1,19410 's, zy
8 C-
9 , 1010 /, o Coll io,z
10 h O q
12 0 )M f( 0 A5 to t' L5,_. 13 6QD ,D
14 O �I�4'1 1 GSv 1
15
16 1 vS2
17
18
*Total Suspended Solids= Final Residue(q)X 1000(mg/g/)X 1000(ml/I)
Sample Filtered (ml)
**Report all samples with a weight gain of<.0025g as<5.0 mg/I
***The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 15%. Example:8.8-8.2=.6(diff), .6divided by 8.5(avg)equals.07 or 7%. If the
relative percent difference exceeds 15%,then the sample should be re-analyzed and the results noted_
difference average relative percent difference
U�
notes:
SQP Lab TSS Data Log Form22: Revision 7 Oct 1, 2009

SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For TSS
Standard Methods 19th Edition 2540D
Samples for Week: CO —O Date of Analysis: 6
Analytical Balance Calibration: lgram= `l Oven Temp: /P] ; should be 103-105 C
time in oven: 10= - time out of oven: y Z % samples should stay in oven at least
Time of Analysis: one hour& 15 minutes in desicator
Effluerit samples must be 24 hour composite samples, stream samples are grabs
Sampler Amount Initial Wt. Wt.Of Filter Final Wt.
[plan /Analyst Date Sample Filtered of Filter + Residue of residue TSS Reported
ID Collected ID mis (grams) (grams) (grams)** mg/I Value
1 '
2 61Z)rt 8 oo 7.. 2 .
3 U A 0 1u
4 s 56 / t. CX246 '?,-Z 22
5 f (o va V3
6 d1 d 5d 6qLA1 V, Z 162
7 t, l l 1A35 w o 1110
9 1 /3bz 06�
10 031V 1.3 LA, L 63 W7 (,f -: ,Z
11 1A 5 Ck) 6 t Q C JC b
12 0ca -,o aU `s e-SO
13 b� , �, S , �� OLD r V Gib
14 7,
15
16
17
18
*Total Suspended Solids=Final Residue(g)X 1000(mg/g/)X 1000(ml/l)
Sample Filtered (ml)
**Report all samples with a weight gain of<.0025g as<5.0 mg/l
***The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 15%. Example:8.8-8.2=.6(diff), .6divided by 8.5(avg)equals.07 or 7%. If the
relative percent difference exceeds 15%,then the sample should be re-analyzed and the results noted.
difference average Irelative percent difference
notes:
SQP Lab TSS Data Log Form22: Revision 7 Oct 1, 2009

SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For TSS
Sta^n� rd Methods 19th Edition 2540D
Samples for Week: a UDC U`'I Date of Analysis: GSA o
Analytical Balance Calibration: 1gram= YOUCY6 Oven Temp: /07> should be 103-105 C
time in oven: ts �,time out of oven:Fp; s5 ator
samples should stay in oven at least '
Time of Anal"Si 2'•0� one hour& 15 minutes in desiceas
Effluent samples.must be 24 hour composite samples, stream samples are grabs
Sampler Amount Initial Wt. Wt.Of Filter Final Wt.
pan /Analyst Date Sample Filtered of Filter +Residue of residue TSS Reported
# ID Collected ID mis (grams) (grams) (grams)** mg/I Value
1
2 ova°► 0I / D 00 V5
s I aI I a4l et 6 3.g1
4 01 / d a3
5- 1r 44 ) la 52 WY
6 o�3t7 y 12 , tia 1
7 0750 i aa3 , 10\33 003b .6 r0
8 VIOT 111 11P 0010 ;W c o
9 blay. ocx g' 0
yb
10 �1) t► a ?� . z
11 1i ; 30 fl0 ,.0
137
14 15 66, 11 ,0 C 56
16
17
18
*Total Suspended Solids= Final Residue(g)X 1000(mg/g/)X 1000(mVI)
Sample Filtered (ml)
**Report all samples with a weight gain of<.0025g as<5.0 mg/I
***The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 15%.Example:8.8-8.2=.6(diff),'.6divided by 8.5(avg)equals.07 or 7%. If the
relative percent difference exceeds 15%,then the sample should be re-analyzed and the results noted.
difference average relative percent difference
2 ��$
notes:
SQP Lab TSS Data Log Form22: Revision 7 Oct 1, 2009

SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For TSS
C Standard Methods 19th Edition 2540D
Samples for Week: 6161 0—) [67 Date of Analysis: Q 7
Analytical Balance Calibration: lgram= l ,6(b0 Oven Temp:-/2q should be 103-105 C
time in oven: ,,a time out of oven: samples should stay in oven at least
Time of Analysis: I S D one hour&15 minutes in desicator
Effluent samples must be 24 hour composite samples, stream samples are grabs
Sampler Amount Initial Wt. Wt.Of Filter Final Wt.
pan /Analyst Date Sample Filtered of Filter +Residue of residue TSS Reported
# ID' Collected ID mis (grams) (grams) (grams)** m /I Value
2 6-76107 dq - - ) 50-0 a)a 1. id -q /z q C'S.o
3 07610')N ObOrn I 19 (02 009'9 9, ,(0
4 6?6 0 76 'i 4AAl a 7(v 1, 05 �� Z 0�2
5 ) 3 6 0 0 Q,0 G 5
6. 67p7-0616 1. 05 9-S' 0(4-L �q 4
7 L II I, 11, .1a LId 1069 7 3,
8
9 O D), P YI f2 014 / ,� 3°J 00 s(�
10 d 7 q . 4 2 /.1. 1Z.,Z
11 0� 0 � 3 a AL, C—S-6
12 OWW6A 15 ( aLl G S�
*� 13 ti D L' lI Ids Z V L�.O
14 ?ir17cS L IA59 1, I r 00 •o\
15
16�
17
18
*Total Suspended Solids=Final Residue(g)X 1000(mg/q/)X 1000(ml/I)
Sample Filtered (ml)
**Report all samples with a weight gain of<.0025g as<5.0 mg/I
***The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 15%.Example:8.8-8.2=.6(diff), .6divided by 8.5(avg)equals.07 or 7%: If the
relative percent difference exceeds 15%,then the sample should be re-analyzed and the results noted.
difference average relative percent difference
notes:
SQP Lab TSS Data Log Form22: Revision 7 Oct 1, 2009

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mg/l= 110 OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/1= 11310 long as the QC checks OK STD 2.0 mg/1=
QC CHK 2.0 mg/l= 01,01 QC CHK1.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recor a .on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis l
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)•equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy collected collected run mgn mgn value
{ effluent comp - ID p 2i,N %L a U
` upstrm grab 11 7 1 0.011- G0•7,
dnstrm grab I 110 0,04 r,0-1
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the'relative percent difference is> a,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010
1

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date ® 4Ik Low Level Calibration
%slope '�,(t Slope should be:-54 to"F-60 %slope + $ZX
STD 1.0 mg/1= / OK if<-54 on low range as STD .200 mg/l= 0,7.60
STD 10.0 mgll= .p long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= Ai3 QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week `
Matrix Spike will be analyzed and recor a on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran -ny couectea collectea JN
mg/1mg/1value
effluent. comp qi
upstrm grab b7
dnstrm grab I ® 3 ,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example:1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010
)

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should e:-54 to-60 %slope
STD 1.0 mg11= r OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mg11=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will e analyzed and recorded-,on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab Dy couectea couectea run mg/l mgn value
effluent comp �j O vp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I . X2= mgll X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percen i erence is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 6 2A L911 Low Level Calibration
%slope ,lo Slope should be:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg& long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= ,,b QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded-on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy collectea couectea run mgn mg/1 value
effluent comp 9XI 6H 11 1 b e Io N '.b
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used mI sample and ml DI H2O
X2= mg/I X2= mgll X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percen i erence is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent '
Example:1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked.sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010
)

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
( Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 10 11101 Ao q Low Level Calibration
%slope — L Slope should be:-54 to-60 %slope
STD 1.0 mg/1= 42 OK if<-54 on low range as STD .200 mg11=
STD 10.0 mg/l 16,D I long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded.on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/1 on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride .
*comp/ analyzed date time time value duplicate Reported
sample gran cy couectea couectea run mg/1 mg/1 value
effluent comp. 1110 pZ 0 ,fit) �C,3
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml Dl H2O
X2= mg/l X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference Is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C) X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010
1

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 61 Aori Low Level Calibration
%slope Slope should be:- 4'to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mgil=
STD 10.0 mg/1 ,p long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= p-L QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recordecL.on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride .
*comp/ analyzed date time time value duplicate Reported
sample gran py couectea couectea run mg/1 mg/1 value
effluent comp dh0i 6 D 738 V.0 Y�
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative per'ent aifference is> o, then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C) X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010
I

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date I Low Level Calibration
%slope I Slope should be: -54 to-60 %slope
STD 1.0 mg/l= o OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(difl), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples.must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grail by conectea conectea run mgn mg/1 value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I.
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 1076, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100= Percent recovery — X 100= %recovery
( 1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date � 1, �M Low Level Calibration
%slope. 54 Slope should be: -54 to-60 %slope
STD 1.0 mgll= ,10 OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= I Xj long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grail by conectea collected run mg/1 mg/1 value
effluent comp '� ��. ot/50
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example:1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
( Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date a k Low Level Calibration
%slope Slope should be: -54 to-60 %slope 71y
STD 1.0 mgll= 1 OK if<-54 on low range as STD .200 mg/l= o
STD 10.0 mg/l= 7 long as the QC checks OK STD 2.0 mg/l= A.0
QC CHK 2.0 mgll= QC CHK1.0 mgll= �Iv
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
( sample grab by couectea couectea run mg/1 mg/1 vawe
effluent comp oSeW )S
upstrm grab 11 lb ltr RM •OY C 0--2,
dnstrm grab h Il�'D(7 �•C� G01Z
*Dilutions: sample diluted for fluoride value. Used mi sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percentdifference is> o, en the sample should a re-an yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is Ti mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Cj-, Slope should be:-54 to-60 %slope
STD 1.0 mgll= ti OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mg11=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ Fvalue
*comp/ analyzed date time timeduplicate Reported
sam le grab Dy couectea collected run mg/1 value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)-unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100=110%recovery A-B X 100=Percent recovery - X 100= %recovery
1 C
t
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %Slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHIC 2.0 mg/l= QC CHIC1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ ;val;ue
*comp/ analyzed date time time duplicate Reported
sam le gran ny conectea couectea run mgn value
effluent comp 0- In,
upstrm grab
dnstrm, grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent erence is> o, hen the sample shoula be re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1'mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date �d� )� Low Level Calibration
%slope Slope should be:-54 to-60 %slope -� I
STD 1.0 mg/l= ' () OK if<-54 on low range as STD .200 mg/l= (YA
STD 10.0 mg/l= In long as the QC checks OK STD 2.0 mg/l= QLO
QC CHK 2.0 mg/l= �O�J QC CHK1.0 mgll= I
run effluent samples daily
run stream samples
3 times/week
AlT
a rLx pi a-willa analyzed an recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
( sample gran ny miected miectea run mgn mgn value
effluent comp plu
upstrm grab �� ,, i.5 61,LQ .2
dnstrm grab /10n,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mg/I
difference average 'relative percent difference
effluent
stream
If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical.value(C).X 100
7.1 -6 X 100=110%recovery A-B X 100=Percent recovery - X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mgll= J OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example:8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by corrected corrected run mgn mgn value
effluent comp 1W Cb t
upstrm grab Lb 3)
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 107o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
C .
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slopeq,- Slope should be: -54 to-60 %slope
STD 1.0 m OK if<-54 on low range as STD .200 mg/l=
STD 10.0 m long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= d QC CHK7.0 m9/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weeRly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collectedl fluoride
*comp/ analyzed ;date time time value duplicate Reported
sam le gran I,y ca couectectrun mgn mg/n value
effluent comp p �S 2
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mgll X2= mg/I
difference average **relative percent difference
effluent
stream
"*If the relative percent difference is> o, then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date �A )� Low Level Calibration
%slope Slope should be:-54 to-60 %slope S ,b
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l= �11,66
STD 10.0 mg/l= jbt long as the QC checks OK STD 2.0 mg/l= 2 t10
QC CHK 2.0 mg/l= QC CHK1.0 mg/l= r,
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by coliectea conectea run Mgt] mgn value
effluent comp -7 13
upstrm grab 676-5 ct 1 v f901
dnstrm grab A b }j 2(71 40,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/l
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope %Ip Slope should be:-54 to-60 %slope
STD 1.0 mgll= JOD OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/1= V0/0 long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= b QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
comp/ analyzed date time time value duplicate Reported
sample grail by couectea conectea run mg/t mgn value
effluent comp 'j (�
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/1 X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L,
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
( Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Dat Low Level Calibration
%slope Slope should be:-54 to-60 %slope 'QS 4m
STD 1.0 mgll= 140 OK if<-54 on low range as STD .200 mgll= 0:, JS6
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/1 on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%..If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
'`comp/ analyzed date time time value duplicate Reported
sample gran ay couected couected run I mgn mgn vawe
effluent comp d
upstrm grab N Q ti ,p2 1lZ
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mgll X2= mg/I
difference average **relative percent difference
effluent
stream
�*If the relative percent difference is> 4, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example:1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.6 mg/L'
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
t
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
( Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope 1j•�� Slope should be: -54 to-60 %slope
STD 1.0 mg/l= I I OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= 15-7 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= 161 QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
Csample gran ny couectea couectea run mg/1 mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= mgll X2= mg/I
difference average 'relative percent difference
effluent
stream
�*If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 1�� Low Level Calibration
%slope 5(o Slope should be: -54 to-60 %slope A �,1
STD 1.0 mgll= a OK if<-54 on low range as STD .200 mg/l= ,
STD 10.0 mg/l= ;j long as the QC checks OK STD 2.0 mg/l= tip
QC CHK 2.0 mg/1= QC CHK1.0 mg/l= 1p
run effluent samples daily
run stream samples
3 times/week
a nx pi a will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(differencelaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite,stream samples are grab samples
collectedl fluoride
*comp) analyzed date time time value duplicate Reported
Csample grab by couectea couectea run mg/1 mg/1 value
effluent comp I- 1 5 p 72- ,7
upstrm grab 01)-%6 1 otol, CD,IZ
dnstrm grab 00'r 0 Dy
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent di Terence is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
r
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
( Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date h� 6 Low Level Calibration
%slope n Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= ftO long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran py couectea couectea run mg/1 mgn value
effluent comp 06
upstrm grab v
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference - average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)'Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 16 X 100=110%recovery JA—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
( Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date__23 WA Low Level Calibration
%slope ` I Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= lb&0 long as the QC checks OK STD 2.0 mg/l=
QC CHIC 2.0 mg/1= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and Amg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy conectea couectea run mg/1 mg/1 vawe
effluent comp YD 40A
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= mgll X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 1 07o,then the sample s ou be re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)-unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100= 110%recovery A-B X 100=Percent recovery - X 100= %recovery
r 1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 1 N Low Level Calibration
%slope YWI Slope should be: -54 to-60 %slope —�
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l= &70
STD 10.0 mg/l= Wyp long as the QC checks OK STD 2.0 mg/l= Z-
QC CHK 2.0 mg/l= QC CHK1.0 mg/1= 61trL—
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ „ , fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea couectea run mgn mgn value
effluent comp ,p �D q
upstrm grab -Y01 0 &04-
dnstrm grab U 1 LQ
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H20_
X2= mg/I X2= mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent i erence is> o,then the sample sEould Be re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date e) l� Low Level Calibration
%slope' -fit,L Slope should be- 154 to-60 %slope
STD 1.0 mg/l= jL,b OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= I /(- long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low-level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time 4n4m
value duplicate Reported
(` sample grab by couectea conectea mg/1mg/1value
effluent comp a� �7 95 Cf�
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= m911
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 1076,then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery JA—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date , Low Level Calibration
%slope Slope should b : -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
�l sample gran ny conectea conectea run mgn mg/1 value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/i
difference average "relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L.
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date cwI I Low Level Calibration
%slope 51 Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll= omA
STD 10.0 mgll= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mgll= ho
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(difl), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite,stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy corrected conectea run mgn mgn value
�W effluent comp p�3 6 ,I
upstrm grab 1.1 (A40 p0 j0 L.a/l1
dnstrm grab VN \ � Z-
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mgll X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent i erence is> o, then the sample should a re-ana yzed and the results noted.
1 Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of'I mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical-value(C)X 100
7.1 -6 X 100=110%recovery JA B X 100=Percent recovery - X 100= %recovery
1 C
C,
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 4L5,p0OF-C
High Level Calibration Date a.0 V I Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mg/1= 0 OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/l= b long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= lb QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyze-a -ginia recorded on-a-w--e-ekTy basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
C *comp/ analyzed date time time value duplicate Reported
sample grab by couectea couectea run mg/1 mg/1 value
effluent comp
upstrm grab
dnstrm grab
F-----`—X2=—Mg1I
lutions: sample diluted for fluoride value. Used mi sample and ml DI H2O
X2= mg/t X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> °, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)-unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100= 110% recovery A-B X 100=Percent recovery - X 100= %recovery
( 1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 4500E-C
High Level Calibration Date OA a.1 Low Level Calibration
%slope Slope should be: -54 to-60 %slope.
STD 1.0 mgll= OK if<-54 on low range as STD .200 mg/1=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekIV asis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite,stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea corrected run mg/1 mgn value
effluent comp 0�3 o y ,?3
upstrm grab 010 -2
dnstrm grab 0
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
r
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date o�� Low Level Calibration
%slope �' Slope should be: - 4 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/1=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/1=
QC CHK 2.0 mg/l= QC CHK7.0 mg/1--
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a-W-ReWy basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ay couectea coiiectea run mgn mgn value
effluent comp / ��
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mgll X2= mg11
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix'Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100=110% recovery A-B X 100= Percent recovery - X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date da 2N.lA m Low Level Calibration
%slope n- Slope should be: -54 to-60 %slope cs i
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l= G'
STD 10.0 mg/l= ()10 long as the QC checks OK STD 2.0 mg/1= Z.00
QC CHK 2.0 mgll= QC CHK1.0 mg/l= GAS
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea couectea run mg/i mgn value
effluent comp a- Z 07P0 07 ah k
upstrm grab / U . p $.0 .`c7L 2
dnstrm grab 6 G �,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample s ou be re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date a /OVJ Low Level Calibration
%slope Slope should be: '54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= 1,UQ long as the QC checks OK STD 2.0 mg/l
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*compl analyzed date time time value duplicate Reported
sample grad by couectea conectea run mg/1 mgn value
effluent comp9-
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percentdifference is> o, t5en the sample shoula be re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100=Percent recovery — X 100= %recovery
i
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 4500E-C
High Level Calibration Date qa 01 o Low Level Calibration
%slope ,Z Slope should be:5-;4 to-60 %slope 51.4
STD 1.0 mgll= Q OK if<-54 on low range as STD .200 mg/l= Z,.Qcs
STD 10.0 mg/l= b, -long as the QC checks OK STD 2.0 mg/1= zo
QC CHK 2.0 mg/l= QC CHK1.0 mgll= G1�
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite,stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran by conectea couectea run mgn mgn value
effluent comp W(D ,Sc• ��Is
upstrm grab li 11 r 9 T5 1 a► -d G a-Z
dnstrm grab 1 07
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percentdifference is> a,then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to:100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 0 1"� Low Level Calibration
%slope Slope should be: -54 to-60 %slope 3771i/
STD 1.0 mg/l= 110 OK if<-54 on Iow range as STD .200 mg/l=
STD 10.0 mg/l= 'O long as the QC checks OK STD 2.0 mg&—
QC CHK 2.0 mgll= ;0 QC CHK1.0 mg/l= f
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will e analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
( sample gran. Dy conectea conectea run mg/1 mg/1 value
\ effluent comp 67�, '. �' 4•D2
upstrm grab c911 do d. . ,01 &01/7
dnstrm grab (911 4 k2 d,oLl Z- ?I
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2-- mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1—6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
(. Laboratory Data Sheet For Fluoride
t, Standard Methods, 19th Edition 450OF-C
High Level Calibration Dat Low Level Calibration
%slope w1 Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg1l= p� long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= I q7 QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix S-p-iFe-will be analyzed and recorded on a wee y bagis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy couectea couectea run mg/1 mgn value
effluent comp 0 -7 n CY7 W.Wl�
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples)'.The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date duo Z Low Level Calibration
%slope ✓ , Slope should be: - 4 to-60 %slope
STD 1.0 mg/l= 110 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= 1(340 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= 2 QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg) equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy collected couectecl run mg/1 mgn value
effluent comp a 6-7 3 IS ai� , ,
upstrm grab ap
dnstrm grab �� L
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
IFX2= mg/I X2= mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference Is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(13)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg1l=
QC CHK 2.0 mgll= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg) equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all.samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea conectea run mg/1 _ mgn value
effluent comp of
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> a, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 =110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date-Q- M Low Level Calibration
%slope 31.4 Slope should b : -54 to-60 %slope
STD 1.0 mg/l= 110 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= i b-'0 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg1l= Vti(n QC CHK1.0 mg/l
run effluent samples daily
run stream samples
3 times/week
a nx. pi a will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each-run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates. .
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab Dy conectea couectea run mg/1 mg/1 value
effluent comp (o ?y
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percentdifference is> o, en a sample should a re-an yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery.=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date j8holq Low Level Calibration
%slope .5 5q Slope should be: -54 to-60 %slope
STD 1.0 mg/l= lig OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= 100 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ay couectea couectea run mg/1 mgn value
effluent comp 67a0 'L Y r
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> a, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)-unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100= 110% recovery A-B X 100 -Percent recovery - X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
C Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope N Slope should be:-54 to-60 %slope
STD 1.0 mgll= /, OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= o long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= ;.6Z QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level,calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%.,If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy couectea conectea run mg/1 mg/1 value
effluent comp S')- �,60
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Ll7 a&I 1 1 Low Level Calibration
%slope S7-r'L, Slope should be:-54 to-60 %slope
STD 1.0 mgll= , OK if<-54 on low range as STD .200 mg11=
STD 10.0 mgll= 16 long as.the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= 4,07- QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea conectea run mg/1 mg/1 value
effluent comp (p
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L -
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B) divided by theoretical value(C)X 100
7.1 —6 X 100 =110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= P% QC CHK1.0'mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference (difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg) equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran by couected corrected run mg/1 mg/1 value
( effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then tHe sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B) divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 = Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 6kn;nLow Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= ,6� QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded rec6rded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea conectea run mgn mgn value
effluent comp 2;-0
upstrm grab etn
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 1 W,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope -SM Slope should be: -54 to-60 %slope
STD 1.0 mg/1= j,b OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= /0-9 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= 9110 QC CHK7.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%.of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea couectea run mgn mg/1 value
effluent comp
u strm grab
p
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= mgll X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery'must be between 85 and 115 percent
Example: 1 ml of a 100'mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 = 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
C Standard Methods, 19th ditio'n 450OF-C
High Level Calibration Date (0� / Low Level Calibration
%slope Isim Slope should be: -54 to-60 %slope
STD 1.0 mg/l= pb OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will a analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
* ------
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy cotrectea couectea run mg/1 mgn value
effluent comp t
upstrm grab
dnstrm grab G0�
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery. A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
// Laboratory Data Sheet For Fluoride
l �,6andard Methods, 19th Edition 450OF-C
High Level Calibration Date P' ,'vf 1I Low Level Calibration
%slope —SO Slope should be: -54 to-60 %slope
STD 1.0 mg/l= I•p OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= W, long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= �\q QC CHK1.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dif1), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea couectea run mg/n mg/1 value
effluent comp vr
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
L
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should b : -54 to-60 %slope
STD 1.0 mg/l= 11)0 OK if<-54 on low range as STD .200 mgil=
STD 10.0 mg/l= J W) long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= b2 QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will a analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg) equals .027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ny conectea collectea run mgn mgn value
effluent comp r2
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
** If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
l Standard Methods, 19th Edition 450OF-C
High Level Calibration Date �z�q Low q Low Level Calibration
%slope 7rL Slope should be: -54 to-60 %slope
STD 1.0 mg/l= 0 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0.mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must.be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If.the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy collected couectea run mgn mg/1 value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�T Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 1� Low Level Calibration
%slope ,Z, Slope should be: -54 to-60 %Slope
STD 1.0 mgll= /Ib OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= 14tiO long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= 241 QC CHK7.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(differencefaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by collectea collected run mg/l mgn value
effluent comp o
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
r
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�- Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope _� Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/P
STD 10.0 mg/l= 0 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a week y basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%: Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by conectea couectea run mgn mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 =110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
/ Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope 5& Slope should e: -54 to-60 %slope
STD 1.0 mg/l= 40 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
Vj
QC CHK 2.0 mg/l= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be' recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy couectea couectea run mgn mgn value
'f effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B) divided by theoretical value(C)X 100
7.1 -6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�- Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike Will a analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea collected run mg/1 mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date. OT I Low Level Calibration
%slope Slope should be 54 to-60 %slope ZIS70
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l= (�
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples .
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ay couectea conectea run mg/1 mgn value
effluent comp ,1 VIA v
upstrm grab S'
dnstrm grab /0" .`v
*Dilutions: Ikky sample diluted for fluoride value. Used ml sample and ml DI H2O
1.4 X2= -T �g/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the samp e should a re-an yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L.
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�- Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
_ 'sample grab uy couectea couectea run mgn mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
l
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg1l=
QC CHK 2.0 mlg/l= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ny couectea couectea run mgn mg/I value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> a, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/1—
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea couectea run mgn mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: - sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 'ram Low Level.Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/1-
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a wee Ty basis
A Blank must be run each day before and after each run:The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*.Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ay conectea conectea run mgn mg/1 value
effluent comp 1 (�
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked.sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A-B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date �( "I Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg11= QC CHK1.0 mg/l--
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recoraed on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/- analyzed date time time value duplicate Reported
sample gran uy couectea conectea run mg/1 mg/1 vague
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> a, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�- Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should e:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK7.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recor a on a wee y asis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference (difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab Dy couectea couectea run mg/1 mg/1 value
( effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2 mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/1=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= QC CHK1.0 mg/1--
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a wee y basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(difl), .22divided by 8.25(avg) equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grail ny collected collected run mgn mgn value
effluent comp i&/
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mg/I
difference average **relative percent.difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 6 o 1,a16 Low Level Calibration
%slope 3�n Slope should be: -54 to-60 %slope �.
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l= 6�j
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l= Z-1-0
QC CHK 2.0 mg/l= 7,M QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
a nx pi e will e analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy cone tea corrected run mg/1mg/1value
effluent comp
upstrm grab n &-Z>1.
dnstrm grab OdqZ,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
SJA—X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be.'-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed.10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ny couectea couectea run mgn mg/1 value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix-Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
13) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 = 110% recovery A— B X 100 Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK7.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix 6PIKe irvi be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy conectea conectea run mg/1 mg/I value
effluent comp l
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mgll X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana lyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: 154 to-60 %slope
STD-1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mgll--
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea conectea run mg/I mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)-unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100= 110%recovery A--B X 100=Percent recovery - X 100= %recovery
1 C
r
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date ( � Low Level Calibration
%slope nr 12 Slope should be:-54 to-60 %slope
STD 1.0 mg/l= b OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= /() long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= q QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time - value duplicate Reported
sample grail py conectea conectea run mgn mgn value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= m9/1 X2= mg/l X2= mg/1
difference average 'relative percent difference
effluent
stream
** If the relative percent difference is> o, then the.sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 160 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 = 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride'Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
( Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope lu Slope should be:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/[= _ QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(differencefaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couected couected run mgn mgn value
effluent comp
upstrm grab bzp 1044 , 0,05 L &.
dnstrm grab (1 ll tJ I'bS6, (�•� 6-1i
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted. .-
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B) divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
r _ Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date i Low Level Calibration
%slope S 1 Slope should be: -54 to-60 %slope
STD 1.0 mg/1= b OK if<-54 on low range as STD .200 mgll= .
STD 10.0 mg/l= IN long as the QC checks OK STD 2.0 mg/1=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dif), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectecl couectea run mgn mgn value
effluent comp t All
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/l X2= mg/I
difference average "relative percent difference
effluent
stream
**If the relative percent i erence is> o, then fhe sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 =110% recovery JA—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope — 53-� Slope should be: -54 to-60 %slope
STD 1.0 mgll= 110 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= I b'Ap long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= awl QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and record6d on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(differencelaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/. analyzed date Qcoiiectea
time value duplicate Reported
sample grab by couectea run mg/1 mg/1 value
effluent comp tj
upstrm grab L 0-'L
dnstrm grab L•U•2
*Dilutions: sample diluted for fluoride value. Used ml sample and -ml DI H2O
X2= mg/I X2= mg/I X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 1.00= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 5' Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mgll= n OK if<-54 on low range as STD .200 mgll=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are,grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grail uy couectea couectea run mgn mgn value
effluent comp $•a0
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:- 4 to-60 %slope
STD 1.0 mg/l= )�Tj OK if<-54 on low range as STD .200 mg/1=
STD 10.0 mg/l= D long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 m9/1= OL QC CHK1.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recordeTo—n—a—`Wee�RlVy basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ny couectea couectea run mg/l mgn value
effluent comp Q IO 0 c9'�'i I
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/1 X2.= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope — �,d Slope should be:-54 to-60 %slope
STD 1.0 mg/l= Ito OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= fog long as the QC checks OK STD 2.0 mg/1-
QC CHK 2.0 mg/1= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a wee y basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea conectea run mg/1 mgn value
effluent comp 150 ,a
upstrm grab Z
dnstrm grab Q rL
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/l
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, Then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
_ Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration , Date Low Level Calibration
%slope Sqj Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= ti QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will e analyzed and recorded on a wee y basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectea couectea run mg/t mgn value
effluent comp Y
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115.percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—.B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: - 4,to-60 %slope
STD 1.0 mg/1= Lb OK if<-54 on low range as. STD .200 mg/l=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= QC CHK1.0 mg/I=r
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded o-n--a-w—eqkTy basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy coiiectea collectedi run mg/1 mgil value
effluent comp
upstrm grab G0
dnstrm grab 66�-
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average 'relative percent difference
effluent
stream
'*If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100= 110% recovery A-B X 100 =Percent recovery - X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
�Y Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 161lq Low Level Calibration
%slope 3 Slope should be: -54 to-60 %slope
STD 1.0 mgll= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= QC CHK1.O'mgll=
run effluent samples daily '
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couectecl couectecl run mg/1 mgn value -
effluent comp p
upstrm grab
dnstrm grab
*Dilut' ns: sample diluted for fluoride value. Used_ ml sample and�ml DI H2O
On X2f=&Rmg1l X2= mg/I X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 = 110% recovery A—B X 100 = Percent recovery — X 100= %orecovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
,. Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 4500E--C
High Level Calibration Date 2 111hy Low Level Calibration
%slope ���, Slope should be: - 4 to-60 %slope
STD 1.0 mg/1= 110 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= long as the QC checks OK STD 2.0 mg/l--
QC CHK 2.0 mg/l= QC CHK1.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will e analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run..The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/' fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran ay couectea couectea run mg/1 . mgn value
effluent comp n oV
upstrm grab Un-
dnstrm grab `i:,
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100=110%o recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
3
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be: -54 to-60 %slope.
STD 1.0 mg/1= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= M19 long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix S`piFe—will be analyzed and recorded on a weekly asis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference (difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%..Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran fay couectea couectea run mgn mg/1 value
effluent comp 3/L 13, 71
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> a, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recoveryspiked sample recovery A —uns iked sample result 13 divided b theoretical value C X 100
= p P rYO P P O Y O
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery — X'100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
H'i 9 h Level Calibration Date r I Low Level Calibration
%slope ^. Slope should be: -54 to-60 %slope
STD 1.0 mgil= OK if<-54 on low range as STD .200 mg11=
STD 10.0 mgll= (� long as the.QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/1= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea couectea run mg/1mgn value
effluent comp OW 07' '16A
upstrm grab
dnstrm grab
*Dil tions: sample diluted for fluoride value. Used Wml sample and 2_ml DI H2O
X2= g/l X2= mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L ,
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 7 I Low Level Calibration
%Slope Cj Ot 4X Slope should be:-54 to-60 %slope
STD 1.0 mgll= 0 OK if<-54 on low range as STD .200.mg11
STD 10.0 mg/l= ' long as the QC checks OK STD 2.0 m9/1= 0
QC CHK 2.0 mg/l= 1 QC CHK1.0 mgll= a
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(differencefaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample graq py couectea collected run mg►t mgn value
effluent comp ) —7 ,t t 810 07 z® 7 0 ;
u strm grab �3 S O •CV
P 9 I I S l'y (�. �?
dnstrm grab • I 1 13 .IS �•
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/1 X2= mg/l
difference average 'relative percent difference
effluent
stream
* If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date ""7 l Low Level Calibration
%slope 101, Slope should be: -54 to-60 %slope
STD 1.0 mg/l= I .o 0 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= )0, 0 long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mgll= I , QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%.-Example: 8.36-8.14=.22(dift), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by corrected couectea run mg/1 mg/1 value
effluent comp I 1 1 0 13 11 6 1-3
7
~ u strm grab 0© 0,07 •,O
p g � �' 1 � 1 � � © a 0 7
dnstrm grab y,,.of W ( 410 1 2-© 045 6)
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/l X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percen ditterence is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 -6 X 100=110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level.Calibration Date '7 16 Low Level Calibration
%slope I Slope should be:-54 to-60 %slope
STD 1.0 mg/l= 1 , 0 OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= I 0�t) long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= I.q QC CHK1:0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and.will not exceed 10%. Example: 8.36-8.14=.22(dif), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
comp/ analyzed date time time value duplicate Reported
sample grail ny couectea conectea run mgn mg/I value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/1 X2=_mg/1 X2= mg/1
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
i
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope 1()L7 Slope should be:-54 to-60 %slope-
STD 1.0 mg/l= ,p OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/1= .o long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a wee y basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite,stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
_ sample gran -by couectea couectea run mg/1 mg/i value
effluent comp c,tL 0 12 0 1z4 2.
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent i erence is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
�..._ Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date t 1�I Low Level Calibration
%slope Slope should be: -54 to-60 %slope ,p
STD 1.0 mg/l= �,o p OK if<-54 on low range as STD .200 mg/l= a. QLo
STD 10.0 mg/l= 0 ,tp long as the QC checks OK STD 2.0 mg/l= 2.ego
QC CHK 2.0 mg/l= QC CHK1.0 mg/l= ,po
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will,be less than 1/2 of the
value of the lowest standard.(.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea couectea run mg►i mg/1 value
effluent comp o-IJ kJ "� 1j 14- 1 i 0 0 `12 fl I
upstrm grab ILL
I 'Z-� ( o p OA3 •Z
dnstrm grab l t-i 3D D� 1 fi6 7i
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/l
difference average 'relative percent difference
effluent
stream
**If the relative percent difference is> a, then the same e should a re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
/ Laboratory Data Sheet For Fluoride
l Standard Methods, 19th Edition 450OF-C
High Level Calibration Date I j `I Low Level Calibration
%slope (, Slope should be: -54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= I o F i> long as the QC checks OK STD 2.0 mgll
QC CHK 2.0 mg/l= 2-,v QC CHK7.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(differencelaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp! analyzed date time time value duplicate Reported
sample gran ay couectea couectea run mgn mg/1 value
effluent comp -5�-J l ( 7 00 0100 I(
upstrm grab
dnstrm grab
`Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg11 X2= mg/l X2= mg/l
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
' Standard Methods, 19th Edition 450OF-C
High Level Calibration DateIQ-6) aa Low Level Calibration
%slope - ,b Slope should be: -54 to-60 %slope
STD 1.0 mg/l= I I u OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= I p long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= I QC CHK1.0 mg/l=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be ana yze —and recorded on a wee y asis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest,standard. (.5 mg/I on the high level calibration and .1mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
Sample grail Dy couectea couectea run mg/1 mg/1 value
effluent comp 166 W o a'I
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mgll X2 mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent i erenceis> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 rng/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
r
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Editionu450OF-C
High Level Calibration Date �� -�l 1 Low Level Calibration
%slope ; -7- Slope shout be: -54 to-60 %slope
STD 1.0 mg/l= .b OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= Vb b long as the QC checks OK STD 2.0 mg/1=
QC CHK 2.0 mg/1= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis.
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(differencefaverage) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg) equals .027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
C sample gran by couectea couectea run mg/I mgn value
effluent comp 073D ' -
upstrm grab GO'Z-
dnstrm grab L 0 Z
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should a re-analyzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
f _ Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope Slope should be:-54 to-60 %slope
STD 1.0 mgll= I ii) OK if<-54 on low range as STD .200 mg/1=..
STD 10.0 mgll= b`b long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= 2. QC CHK1.0 mg/1=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/1 on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals .027 or 3%. If the .
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grab by couected couectea run mg/l mg/1 value
effluent comp na � 02 D o ?qQ /I,3 i
upstrm grab
dnstrm grab
*Dilutions:_sample diluted for fluoride value. Used 2 Y ml sample and ml DI H2O
X2= mg/1 X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> 1076, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 4500E-C
High Level Calibration Date Low Level Calibration
%slope .. 9:1 Slope should be: -54 to-60 %slope Y�o
STD 1.0 mg/l= ) (.,) OK if<-54 on low range as STD .200 mg/l= 0VV
STD '10.0 mg/l= 0-0 long as the QC checks OK STD 2.0 mg/l= ?A)
QC CHK 2.0 mg/l= QC CHK1.0 mg/l= 1 op
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will e analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy conectea conectea run mgn mgn value
effluent comp 30 `7 2
upstrm grab
dnstrm grab j 23 1/ : 011 d. C(7 2
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I —X2= mg/I
difference average **relative percent difference
effluent
stream
** If the relative percent difference is> o, then the sampleshould be re-ana yzed and the results noted.
Matrix Spikes-.A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
{/ Standard Methods, 19th Edition 450OF-C
High Level Calibration Date b Low Level Calibration
%slope `Lj Slope should be: -54 to-60 %Slope
STD 1.0 mg/l= I I a OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mg/l= infolong as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/l= QC CHK1.0 mg/l=
run effluent,samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff),.22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re=analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran Dy couectea couectea run mg/1 mgn value
effluent . comp -0716 th g //0101
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
**If the relative percent difference is> o,then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100=110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010 7

UNIMIN
SCHOOLHOUSE QUARTZ
f Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date O7 1 Low Level Calibration
%slope - rfq
Slope should be: -54 to-00 %slope
STD 1.0 mg/1= OK if<-54 on low range as STD .200 mg/l=
STD 10.0.mg/l= long as the QC checks OK STD 2.0 mg/l=
QC CHK 2.0 mg/1= QC CHK1.0 mg/l=
_ run effluent samples daily
run stream samples
3 times/week
a nx Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 112 of the
value of the lowest standard. (.5 rrig/I on the high level calibration and A mg/I on the low level calibration)
The relative percent difference(differencelaverage)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy conecteu conectea run mgn mg/1 value
effluent comp 6U7- 0l- r,
upstrm grab dl.91 o1 3 d G
dnstrm grab Lbw
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/l X2= mg/I X2= mg/I
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o,then the sample should ere-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100 =Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition�450OF-C
High Level Calibration Date d v '7 Low Level Calibration
%slope Slope should be: t4 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mgll=
STD 10.0 mgll= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= j%^ QC CHK7.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyzed and recorded on a weekly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .I mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will.not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5% of all samples must be duplicates.
Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grail t►y conectea couectea run mgn mgn value
effluent comp r
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mgll X2= ' mg/I X2= mgll
difference average **relative percent difference
effluent
stream
**If the relativepercent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B) If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100=Percent recovery — X 100= %recovery
1 C
< f
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date 07 Low Level Calibration
%slope Slope should be: - 4 to-60 %slope
STD 1.0 mg11= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= 0 long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.Q mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike will be analyze analyzea and recorded on a wee y asis
A Blank must be run each day before and after each run. The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and .1 mg/I on the low level calibration)
The relative percent difference(difference/average) of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dif), .22divided by 8.25(avg) equals .027 or 3%. If the .
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
* Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample gran uy cottectea couectea run mg/1 mg/l value
( effluent comp (� O
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/I _X2=-mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent difference is> o, then the sample should a re-ana yzed and the results noted.
Matrix Spikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5%of all samples):The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100 = 110% recovery A—B X 100= Percent recovery — X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN .
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope -n-'(p Slope should be: - 4 to-60 %slope
STD 1.0 mgll= 1,C) OK if<-54 on low range as STD .200 mg/l= 6 2 C3 .
STD 10.0 mgll= long as the QC checks.OK STD 2.0 mgll= Ud
QC CHK 2.0 mgll= tl3 . QC CHK7.0 mgll= h U t
run effluent samples daily
run stream samples
3 times/week
matrix Spike Will a analyzed and recorded on a weeRFy Dasis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and Amg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(dift),•.22divided by 8.25(avg)equals.027 or 3%. If the
relative percent difference exceeds 10%, then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grad Dy couectea couectea run mg/1mg/1value
effluent comp 0,21; d _�
(^ upstrm grab j! /2 /Mo
dnstrm grab 111) /000 to 33 GO 2-
*Dilutions: sample diluted for fluoride.value. Used ml sample and ml DI H2O
X2=mg/l X2= mgll X2= mgll
difference average **relative percent difference
effluent
stream
**If the relative percentI erence is> o, en a sample should a re-an yzed and the results noted.
Matrix SDikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5 0 of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L :&
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110%recovery A—B X 100=Percent recovery X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8, 2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
Standard Methods, 19th Edition 460OF-C
High Level Calibration Date / Low Level Calibration
%slope 92 Slope show d be: -54 to-60 %slope
STD 1.0 mgll= I OK if<-54 on low range as STD .200 mg/l=
STD 10.0 m9/1= long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mgll= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times%week
a nx pi a Will a analyzed RanTrecorded on a weekly basis_
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and.1mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the ,
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
"Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ I fluoride
*comp! analyzed date time time value duplicate Reported
sample grad ay couectea couectea run mg/1 mg/1 value
effluent comp T, y p
C upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2= mg/I X2= mg/l X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percent t erence is> o,then the sample should a re-ana yzed and the results noted.
Matrix pikes-A Matrix Spike will be analyzed and recorded on a weekly basis(approx 576 of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6 X 100= 110% recovery A—B X 100= Percent recovery X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

UNIMIN
SCHOOLHOUSE QUARTZ
Laboratory Data Sheet For Fluoride
~ Standard Methods, 19th Edition 450OF-C
High Level Calibration Date Low Level Calibration
%slope & Slop shdGld be:-54 to-60 %slope
STD 1.0 mg/l= OK if<-54 on low range as STD .200 mg/l=
STD 10.0 mgll= jpo long as the QC checks OK STD 2.0 mgll=
QC CHK 2.0 mg/l= QC CHK1.0 mgll=
run effluent samples daily
run stream samples
3 times/week
Matrix Spike Will a analyzed and recorded on a weeRly basis
A Blank must be run each day before and after each run.The acceptance criteria will be less than 1/2 of the
value of the lowest standard. (.5 mg/I on the high level calibration and.1mg/I on the low level calibration)
The relative percent difference(difference/average)of each duplicate will be recorded on a weekly basis
and will not exceed 10%. Example: 8.36-8.14=.22(diff), .22divided by 8.25(avg)equals.027 or 3%. If the.
relative percent difference exceeds 10%,then the sample should be re-analyzed and the results noted.
A minimum of 5%of all samples must be duplicates.
*Effluent sample must be a 24 hour composite, stream samples are grab samples
collected/ fluoride
*comp/ analyzed date time time value duplicate Reported
sample grad t)y couectea couectea run mgA mg/l Value
effluent comp
upstrm grab
dnstrm grab
*Dilutions: sample diluted for fluoride value. Used ml sample and ml DI H2O
X2 mgll X2= mgll X2= mg/1
difference average **relative percent difference
effluent
stream
**If the relative percenti erence is> o, en a sample should a re-an yzed and the results noted.
Matrix Di es-!A Matrix Spike will be analyzed and recorded on a weekly basis(approx 5 0 of all samples).The
percent recovery must be between 85 and 115 percent
Example: 1 ml of a 100 mg/L standard spike added to 100 mis of sample has a theoretical value of 1 mg/L.
A)The spiked sample recovery is 7.1 mg/L
B)If the unspiked sample result is 6 mg/L
C)Theoretical value is 1.0 mg/L
The Percent Recovery=spiked sample recovery(A)—unspiked sample result(B)divided by theoretical value(C)X 100
7.1 —6.X 100= 110% recovery A—B X 100=Percent recovery X 100= %recovery
1 C
SQP Lab Fluoride Sheet Form4: Revision 7 Jan 8,2010

iENDER: COMPLETE THIS SECTION COMPLETE THIS SECTION ON DELIVERY
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■ Attach this card to the back of the mailpiece,
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� Environment and Natural Resources address belw: ❑ No
— 2090 U.S. Highway 70, Swannanoa, Nc 28778
JNCDENR n-
STEPHEN DOUGLAS TAYLOR, ORC 3. ice Type
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SM,ANNANOA.N('2877S
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?ENDER: COMPLETE THIS SECTION COMPLETE THIS SECTION ON DELIVERY
■ Complete items 1,2,and 3.Also complete A. Signature
i 4 if Restricted Delivery is desired. ❑Agent
■ your name and address on the reverse X 6 ❑Addressee
Q� North Carolina Department of rinfed Name) C. Date of Delivery
r.; Environment and Natural Resources ►•L�
'- Division of Water Qualitydifferent from Rem 1? El
NCDENR Surface Water Protection Sectionlelivery address below: ❑No
2090 U.S.Highway 70,Swannanoa, NC 28778I
Y-:
ANDREW BRADLEY
VICE PRESIDENT ENVIRONMENTAL A FAIRS
UNIMIN CORPORATION . se ceType
258 ELM STREET rtifled Mail Express Mail
NEW CANAAN CT 06840 Registered etum Receipt for O( handise
❑Insured M C.O.D.
n���inir�r�� 4. Restricted Delivery?(Extra Fee) e
70021IN9'0 ,'MOP'''107];3 19189i
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UNITED
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