Certificate Number: WY000052021-2 Donald LaFara, Program Manager, 08/10/2020

State of Nevada

Department of Conservation and Natural Resources

Division of Environmental Protection

Certifies that

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

Having met the requirements of the

Nevada Administrative Code: NAC 445A

is hereby approved to perform the analyses as indicated on the most recently issued

parameter list which must accompany this certificate to be valid. It is the certified

laboratory’s responsibility to provide their client the most current certified

parameter list. Contact LCP to verify certification status.

Expiration Date: 7/31/2021

Digitally signed

by Don LaFara

Date:

2020.08.10

09:14:53 -07'00'

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

CWA (Non Potable Water)Matrix:

Method Analyte Start Date Date Expires Status

Gross-alpha 8/1/2020 7/31/2021SM 7110 B (GPC) Certified

Gross-beta 8/1/2020 7/31/2021SM 7110 B (GPC) Certified

Radium-226 8/1/2020 7/31/2021SM 7500-Ra B (GPC) Certified

Total radium 8/1/2020 7/31/2021SM 7500-Ra B (GPC) Certified

Page 4 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

Mining (Non Potable Water)Matrix:

Method Analyte Start Date Date Expires Status

Discipline: Chemistry

Redox Potential (ORP) 8/1/2020 7/31/2021ASTM D1498 Certified

Page 5 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

Mining (Solid & Waste Materials)Matrix:

Method Analyte Start Date Date Expires Status

Discipline: Chemistry

Diffusive Releases 8/1/2020 7/31/2021ASTM C1308-08 Nevada Approved

Weathering Products of Solid Materials 8/1/2020 7/31/2021ASTM D5744-13 Nevada Approved

Cyanide Extraction Fluid from Soils and Mine Rock 8/1/2020 7/31/2021ASTM D7572-11 Certified

MWMP Fluid (WITHOUT bottle roll option) 8/1/2020 7/31/2021ASTM E2242-13 Nevada Approved

MWMP Fluid (FROM bottle roll option_Non Percolating Material) 8/1/2020 7/31/2021ASTM E2242-13 Appendix X1.2 Nevada Approved

MWMP Fluid (FROM bottle roll option_Fine Grained Material) 8/1/2020 7/31/2021ASTM E2242-13 Appendix X1.3 Nevada Approved

Paste pH 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.2_NV Modified Certified

ANP by Titration to phenolphthalein end point (after oxidation_hydrogen peroxide) 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.3_NV Modified Nevada Approved

ANP by Titration to phenolphthalein end point (without oxidation) 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.3_NV Modified Nevada Approved

Total Sulfur (High Temp. Combustion Method) 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.4_NV Modified Certified

HCl Extractable Sulfur 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.6_NV Modified Nevada Approved

HNO3 Extractable Sulfur 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.6_NV Modified Nevada Approved

Hot Water Extractable Sulfur 8/1/2020 7/31/2021EPA 600/2-78-054, section 3.2.6_NV Modified Nevada Approved

pH Specific Leachates 8/1/2020 7/31/2021ISO TS 21268-4 Interim

Potential Acid Generation (PAG) 8/7/2020 7/31/2021Nevada Modified Net Acid Generation (NV-NAG) Interim

Page 6 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

RCRA (Non Potable Water)Matrix:

Method Analyte Start Date Date Expires Status

Discipline: Chemistry

Aluminum 8/1/2020 7/31/2021EPA 6010 Certified

Antimony 8/1/2020 7/31/2021EPA 6010 Certified

Arsenic 8/1/2020 7/31/2021EPA 6010 Certified

Barium 8/1/2020 7/31/2021EPA 6010 Certified

Beryllium 8/1/2020 7/31/2021EPA 6010 Certified

Boron 8/1/2020 7/31/2021EPA 6010 Certified

Cadmium 8/1/2020 7/31/2021EPA 6010 Certified

Chromium 8/1/2020 7/31/2021EPA 6010 Certified

Cobalt 8/1/2020 7/31/2021EPA 6010 Certified

Copper 8/1/2020 7/31/2021EPA 6010 Certified

Iron 8/1/2020 7/31/2021EPA 6010 Certified

Lead 8/1/2020 7/31/2021EPA 6010 Certified

Lithium 8/1/2020 7/31/2021EPA 6010 Certified

Manganese 8/1/2020 7/31/2021EPA 6010 Certified

Molybdenum 8/1/2020 7/31/2021EPA 6010 Certified

Nickel 8/1/2020 7/31/2021EPA 6010 Certified

Phosphorus, total 8/1/2020 7/31/2021EPA 6010 Certified

Selenium 8/1/2020 7/31/2021EPA 6010 Certified

Silver 8/1/2020 7/31/2021EPA 6010 Certified

Strontium 8/1/2020 7/31/2021EPA 6010 Certified

Thallium 8/1/2020 7/31/2021EPA 6010 Certified

Tin 8/1/2020 7/31/2021EPA 6010 Certified

Titanium 8/1/2020 7/31/2021EPA 6010 Certified

Vanadium 8/1/2020 7/31/2021EPA 6010 Certified

Zinc 8/1/2020 7/31/2021EPA 6010 Certified

Aluminum 8/1/2020 7/31/2021EPA 6020 Certified

Antimony 8/1/2020 7/31/2021EPA 6020 Certified

Arsenic 8/1/2020 7/31/2021EPA 6020 Certified

Barium 8/1/2020 7/31/2021EPA 6020 Certified

Page 7 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

RCRA (Non Potable Water)Matrix:

Method Analyte Start Date Date Expires Status

Beryllium 8/1/2020 7/31/2021EPA 6020 Certified

Cadmium 8/1/2020 7/31/2021EPA 6020 Certified

Chromium 8/1/2020 7/31/2021EPA 6020 Certified

Cobalt 8/1/2020 7/31/2021EPA 6020 Certified

Copper 8/1/2020 7/31/2021EPA 6020 Certified

Lead 8/1/2020 7/31/2021EPA 6020 Certified

Manganese 8/1/2020 7/31/2021EPA 6020 Certified

Molybdenum 8/1/2020 7/31/2021EPA 6020 Certified

Nickel 8/1/2020 7/31/2021EPA 6020 Certified

Selenium 8/1/2020 7/31/2021EPA 6020 Certified

Silver 8/1/2020 7/31/2021EPA 6020 Certified

Strontium 8/1/2020 7/31/2021EPA 6020 Certified

Thallium 8/1/2020 7/31/2021EPA 6020 Certified

Tin 8/1/2020 7/31/2021EPA 6020 Certified

Titanium 8/1/2020 7/31/2021EPA 6020 Certified

Uranium Total Mass 8/1/2020 7/31/2021EPA 6020 Certified

Vanadium 8/1/2020 7/31/2021EPA 6020 Certified

Zinc 8/1/2020 7/31/2021EPA 6020 Certified

Mercury 8/1/2020 7/31/2021EPA 7470 Certified

Page 8 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.

EPA Number: WY00005

Inter-Mountain Laboratories/Pace Analytical Services, LLC

1673 Terra Ave Sheridan, WY 82801-

7/31/2021Expiration Date:Attachment to Certificate Number: WY000052021-2

State of Nevada Department of Conservation and Natural Resources

Division of Environmental Protection

Laboratory Scope of Accreditation

RCRA (Solid & Waste Materials)Matrix:

Method Analyte Start Date Date Expires Status

Discipline: Chemistry

TCLP extracted Metals 8/1/2020 7/31/2021EPA 1311-Metals Certified

SPLP extracted Metals 8/1/2020 7/31/2021EPA 1312-Metals Certified

Acid digest for metals 8/1/2020 7/31/2021EPA 3050 Certified

Antimony 8/1/2020 7/31/2021EPA 6010 Certified

Arsenic 8/1/2020 7/31/2021EPA 6010 Certified

Barium 8/1/2020 7/31/2021EPA 6010 Certified

Beryllium 8/1/2020 7/31/2021EPA 6010 Certified

Cadmium 8/1/2020 7/31/2021EPA 6010 Certified

Chromium 8/1/2020 7/31/2021EPA 6010 Certified

Lead 8/1/2020 7/31/2021EPA 6010 Certified

Nickel 8/1/2020 7/31/2021EPA 6010 Certified

Selenium 8/1/2020 7/31/2021EPA 6010 Certified

Silver 8/1/2020 7/31/2021EPA 6010 Certified

Zinc 8/1/2020 7/31/2021EPA 6010 Certified

Mercury 8/1/2020 7/31/2021EPA 7471 Certified

Page 9 of 9

Disclaimer: A laboratory that is certified or approved has established that they have the ability to implement a quality control program in accordance with the appropriate Federal or

State regulations or statutes. It is the certified laboratory’s responsibility to provide their client the most current certified parameter list. Contact LCP to verify certification status.