B08_ATTACHMENT_1_-_Terms_and_Conditions_jr3_21_22.pdf

ATTACHMENT 1 – Terms and Conditions 140G0222R0015

Contents

PERFORMANCE WORK STATEMENT

QUALITY ASSURANCE SURVEILLANCE PLAN (QASP)

CLAUSES

52.216-18 ORDERING (AUG 2020)

52.216-19 ORDER LIMITATIONS (OCT 1995)

52.216-22 INDEFINATE QUANTITY (OCT 1995)

52.217-7 OPTION FOR INCREASED QUANTITY – SEPARATELY PRICED LINE ITEM (MAR

1989)

52.217-8 OPTION TO EXTEND SERVICES (NOV 1999)

52.227-17 RIGHTS IN DATA – SPECIAL WORKS (DEC 2007)

1452.201-70 AUTHORITIES AND DELEGATIONS (SEPT 2011)

GS0228 HAZARDOUS SHIPPING (OCT 1997)

GS0231 TECHNICAL LIAISON -TECHNICAL DIRECTION (OCT 1997)

GS0339 GREEN ACQUISITION (JUL 2018)

GS0715 PLACE OF INSPECTION (JUL 2001)

GS0901 PLACE OF DELIVERY (JUL 2001):

GS0919 LEGAL HOLIDAYS (JAN 2021)

GS0925 UNSCHEDULED CLOSURES - FIXED PRICE (MAR 2003)

GS1101 CONTRACTING ADMINISTRATION OFFICE (JUL 2001)

GS1109 OBLIGATION OF FUNDS (JUL 2001)

GS1131 UNILATERAL DEOBLIGATION OF UNEXPENDED FUNDS (MAY 2013)

GS1329 INTERPRETATION OF CONTRACT REQUIREMENTS. (JUL 2001)

GS1330 KEY PERSONNEL (JUL 2001)

GS1332 CONTRACTOR'S REPRESENTATIVE (JUL 2001)

GS1338 NOTICE TO THE GOVERNMENT OF DELAYS (JUL 2001)

GS1346 COMPLIANCE WITH OCCUPATIONAL SAFETY AND HEALTH ACT -- GOVERNMENT-

OWNED (APR 2003)

GS1396 RELEASE OF INFORMATION (JUL 2001)

GS1397 CONTRACTOR REPORTS (JUL 2002)

GS1406 CONFIDENTIALITY OF DATA (OCT 2005)

GS1431 CONTRACT MAXIMUM (JUL 2001)

GS1432 CONTRACT GUARANTEED MINIMUM (JAN 2020)

DOI AAAP-0050 V2 NOTICE TO CONTRACTORS - CONTRACTOR PERFORMANCE

ASSESSMENT REPORTING SYSTEM (DECEMBER 2015)

140G0222R0015

DOI ELECTRONIC INVOICING – ELECTRONIC INVOICING AND PAYMENT REQUIREMENTS –

INVOICE PROCESSING PLATFORM (IPP) (APR 2013)

PROVISIONS

52.204-24 REPRESENTATION REGARDING CERTAIN TELECOMMUNICATIONS AND VIDEO

SURVEILLANCE SERVICES OR EQUIPMENT (NOV 2021)

52.209-11 REPRESENTATION BY CORPORATION REGARDING DELINQUENT TAX LIABILITY

OR A FELONY CONVICTION UNDER ANY FEDERAL LAW (FEB 2016)

52.219-1 SMALL BUSINESS PROGRAM REPRESENTATIVE (SEP 2021)

52.222-22 – PREVIOUS CONTRACTS AND COMPLIANCE REPORTS (FEB 1999)

52.222-49 SERVICE CONTRACT LABOR STANDARDS – PLACE OF PERFORMANCE UNKNOWN

(MAY 2014)

GS2101 INQUIRIES (FEB 2007)

GS2102 INCURING COSTS (JUL 2001)

GS2115 INDEPENDENT REVIEW OF PROTESTS TO THE AGENCY (JUL 2001)

GS2148 SUBCONTRACTING PLAN FOR COMMERCIAL ITEM CONTRACTS (OCT 2015)

GS2150 PROPOSAL FORMAT AND SUBMISSION INSTRUCTIONS (AUG 2001)

GS2160 NON-PRICE/TECHNICAL PROPOSAL INSTRUCTIONS (SEP 2008)

GS2182 PRICE PROPOSAL INSTRUCTIONS (AUG 2001)

GS2301 SINGLE AWARD (AUG 2001)

GS2320 EVALUATION FACTORS (MAR 2019)

PERFORMANCE WORK STATEMENT

Scope: The U.S. Geological Survey has an obligation to provide chemical analysis of geologic materials, to include plants, waters, soils, sediments and rocks, for inorganic constituents in accordance with the terms and conditions herein and the specifications set forth.

General: The contractor shall furnish all labor, materials equipment and facilities in accordance with the terms, conditions, and specifications set forth herein that are required for the chemical analysis. All required instruments and/or equipment, shall be purchased, set-up, calibrated, and on-line prior to award of contract.

Schedule of Items and Prices (Attachment 2) This section provides an estimate of the number of analysis that will be requested for each specific line item. Offerors must include a price for each item, failure to provide a price for each line item may result in the offer being considered unacceptable and no further consideration will be given. Orders under this contract may be issued by warranted contracting officers at the U.S. Geological Survey, Branch of Acquisition and Federal Assistance, P.O. Box 25046, Denver Federal Center, MS 204A, Denver, CO 80225.

This is a firmed fixed price, Indefinite Delivery, Indefinite Quantity (IDIQ) contract. Pricing for each method must be all inclusive. The cost per method must include any/all administration fees per order, storage and disposal of samples, handling, and/or over limit fees.

Estimated Quantities and Prices The quantities stated in the schedule are estimates for comparative purposes, and no claims shall be made against the U.S. Geological Survey (USGS) for excess or deficiency therein. Payment at the unit or lump- sum prices agreed upon will be in full for the completed work and will cover materials, supplies, transportation, labor, tools, machinery, and all expenditures, incident to satisfactory performance. Except as limited by the total amount of funds obligated for the contract, the quantities to be furnished under this contract will depend entirely upon the actual quantities required unless otherwise noted.

The estimated quantities, starting in Year 2, show an increase due large-scale US congressionally mandated projects starting in September of 2022. The number of samples is currently unknown but could range anywhere from three to eight thousand (3,000-8,000) additional samples per year.

1 General Requirements

1.1 The Contractor shall perform analyses according to the methods stated in the contract. Where notated, the analytical method used can be similar to the prescribed method so long as analytical performance is met or exceeded.

1.2 Samples to be analyzed by the Contractor will be provided and delivered to the Contractor by the Government as the samples become available. Sample delivery will be variable throughout the year in both quantity and analytical method type, and generally will be highest during August and September.

1.3 Some of the samples collected may contain hazardous materials, the concentration of

140G0222R0015 hazardous materials in any sample is expected to be low, however some samples may contain concentrations high enough to be harmful. The USGS will attempt to keep the Contractor informed of which samples may contain high concentrations of such materials. It is the responsibility of the Contractor to take the appropriate safety precautions to ensure the safety of employees in the event that a sample does contain unexpectedly high concentrations of hazardous material.

1.4 In order to be able to handle the soil samples from outside the continental United States (CONUS), or from regulated areas within the United States, the Contractor must have the appropriate approval and permits from the Deputy Administrator, Plant Protection and Quarantine programs, U.S. Department of Agriculture. Disposal of any remaining sample and sample extracts must meet regulatory guidelines.

1.5 The samples will be sent to the Contractor directly from Mineral Resources Survey Program Sample Control, Building 20, Denver Federal Center, Denver, Colorado. All solid samples will be physically prepared (ground) to the necessary USGS sample preparation standards prior to shipment and will be containerized with each sample having a USGS assigned identification number and a chain of custody sheet. All water samples will be preserved before shipment according to method protocols.

The chain of custody process will be used to maintain a paper trail for the samples, and the term should not be construed as requiring the level of chain of custody necessary for evidentiary samples. The USGS ID number shall be retained and used on all records pertaining to the sample. This does not preclude the Contractor from assigning their own accession or laboratory number to the sample. The chain of custody sheet will also specify the determinations to be performed on each sample. The Contractor shall record the date and time of sample receipt. The USGS Technical Liaison shall be informed immediately of any problems by telephone or by electronic communications. The USGS Technical Liaison shall also be sent an electronic acknowledgment of the receipt of samples indicating the USGS job number, the Contractor's assigned job number, the analyses requested for the samples, the date of receipt, and any comments concerning the condition of the samples or problems encountered.

1.6 The Contractor shall maintain an internal tracking procedure to ensure accountability of the samples and the data at all times.

1.7 Samples sent to the Contractor's laboratory shall be analyzed in order of receipt (i.e., first in, first out) unless alternate instructions are received in writing from the Technical Liaison.

1.8 The Contractor shall follow similar methodologies specified in the Section 4, or where indicated, an identical method shall be performed.

1.9 The Contractor shall have fully documented Standard Operating Procedures (SOPs) for all methods and procedures run in the laboratory. SOPs shall be provided to the USGS after the contract has been awarded.

1.10 The Contractor shall conduct and document a Quality Assurance/Quality Control (QA/QC) Program for all laboratory work performed pursuant to this contract. This QA/QC Program shall comply with the quality control requirements specified by the contract.

1.11 All specific QA/QC procedures prescribed (Section 2) shall be strictly adhered to by the Contractor. Failure to observe QA/QC requirements will be grounds for default of contract. Records documenting the use of the QA/QC protocol shall be maintained and reported in accordance with

140G0222R0015

Section 6 and 7.

1.12 The Contractor shall have access to analytical instrumentation to meet all of the terms and conditions of the contract. The Contractor shall provide adequate instrument redundancy to ensure that enough operating units may reasonably be expected to be available at all times. The Contractor shall maintain all analytical equipment allocated for this contract at the time of award.

1.13 The Contractor shall appoint a professional analytical chemist(s) who shall have: 1) direct control over the analyses to be performed 2) be available to handle non-routine analytical problems if encountered 3) advise USGS Technical Liaison in the set-up of projects which will meet regulatory requirements and 4) work directly with the Technical Liaison for the USGS.

1.14 The Contractor shall communicate with USGS personnel by telephone or by electronic communications, as necessary throughout the process of sample shipment, analysis and data reporting to ensure that samples are properly processed. This shall include immediately notifying (within 48 hours) the Technical Liaison of any problems encountered in sample analyses that will affect the quality of the data produced, and laboratory conditions that impact on the timeliness of analyses and data reporting. If for any reason a valid analysis cannot be performed on a sample submitted by the USGS, the Contractor shall notify the USGS immediately (within 48 hours). All verbal notifications between the USGS and the Contractor shall be followed by a written notification.

1.15 Following sample analysis, the Contractor shall perform data reduction and shall provide a report on the analytical activities, sample data and quality control documentation as designated in Section 6 and 7.

1.16 Samples shall be analyzed and the data returned to the USGS and received by the Technical Liaison within 30 days of the time of sample receipt by the Contractor.

1.17 Any unused portion of the sample remaining after completion of analysis shall be properly stored by the Contractor for 3 years following submission of the data report to the USGS. When that time interval has passed, both the sample and the sample container shall be disposed of properly at Contractor's expense. It shall be the sole responsibility of the Contractor to ensure that all applicable regulations are followed in the disposal of samples or related chemicals. If the USGS should request return of a sample(s) prior to the expiration of the 3 year interval, it shall be returned at USGS expense in a manner that meets DOT regulations.

1.18 The Contractor shall establish a system of security and safeguarding that shall prevent analytical data, which shall be government property, from being released to unauthorized persons.

1.19 The Technical Liaison or his/her representative shall have access to the laboratory at all reasonable times for inspection purposes to observe sample analyses and ensure compliance with contract requirements.

1.20 No sample testing shall be done other than that cited on the request form without written confirmation from the Technical Liaison.

2 Internal Quality Control

2.1 The Contractor shall conduct and document a Quality Assurance Program (QAP) for all

140G0222R0015 laboratory work performed pursuant to this contract with the objective of providing sound analytical chemical measurements. The QAP shall incorporate the quality control procedures, any necessary corrective action, all documentation required during data collection and all quality assessment measures performed by management to ensure acceptable data production. The laboratory QA/QC plans are subject to review and approval by the USGS.

2.2 The laboratory shall prepare Standard Operating Procedures (SOPs) for all methods and procedures performed in the laboratory. SOPs shall provide clear and comprehensive directions for the step- by-step execution of an operation, analysis, or action which is commonly accepted as the method for performing certain routine or repetitive tasks. SOPs shall be provided to the Technical Liaison after the contract has been awarded.

2.3 The laboratory shall identify control parameters for each analytical method and shall experimentally establish control limits. The laboratory-derived control limits will be used in all USGS approved Quality Assurance Project Plans and must be used as long as the plans are applicable. The laboratory shall follow control measurements to detect trends and out-of-limit values by the use of control charts. Specifically, a "trend" is six points in a row steadily increasing or decreasing; a "run" is nine points in a row on one side of the mean. The laboratory shall re-evaluate control limits at regular intervals. Records of these activities shall be maintained by the laboratory.

2.4 The laboratory performing analyses required by this contract shall be subject to periodic audits by the USGS, and/or its impartial representative to ensure that the systems and procedures described in the Contractor's QAP are actually operational and in conformance with contract requirements.

2.5 QC samples (e.g. laboratory control spikes, blanks, matrix spikes, matrix spike duplicates, external control materials, etc.) shall be included with the analyses of all samples. At a minimum, the laboratory shall analyze the QC samples specified at the frequency indicated in section 4.8.

The Contractor may supplement the QC samples required by the terms of this contract to ensure accurate and precise data.

2.6 Reanalysis or confirmatory analysis may be required by the USGS when anomalous results are reported by the Contractor. The Contractor shall pay for the rerun if the new value is outside of the 2 sigma error of the first value, and the USGS will pay for the rerun if the rerun value lies within the 2 sigma error of the first value.

2.7 Corrective actions shall be implemented whenever QC sample results exceed control limits.

All corrective actions shall be documented, the records maintained by the laboratory, and reported in the narrative portion of the data report.

2.8 Laboratory control samples (LCS) shall be used to control the analytical process. Whenever an analyte in a LCS does not meet acceptance criteria, the problem shall be resolved and the analytical system restored to normal before further samples are analyzed. A senior chemist shall evaluate the problem and, if in his or her opinion re-analyses is not required (the problem does not affect the integrity of the data for the samples) or not possible (e.g. insufficient sample), the data shall be qualified. If the samples must be reanalyzed because the quality of the data for an analyte is compromised, the Technical Liaison shall be informed of the problem as soon as possible so that the need to collect another sample can be evaluated.

3 External Quality Control

3.1 Ten percent of samples delivered to the Contractor shall be USGS blind quality assurance samples consisting of reference materials, duplicate samples and blanks.

3.2 The results of the analyses of the standard reference materials and duplicate samples will be closely monitored by the USGS. If the known standard mean value does not fall within the calculated 2 sigma error range of the reported mean value, immediate corrective action shall be taken by the Contractor upon notification by the Technical Liaison.

3.3 When the unacceptable data are reported to the USGS and are recognized, the Contractor shall be notified by the Technical Liaison to halt the flow of samples through the part of the system which yielded the erroneous values. Causes of the unacceptable data shall then be determined and reported to the Technical Liaison by the Contractor.

3.4 Further analyses, after the Contractor's receipt of a notice to halt further testing by the USGS for quality assurance purposes, shall be resumed by the Contractor only with consent of the Technical Liaison. Samples analyzed after the last acceptable control sample and before the shutdown shall be re-analyzed at the Contractor's expense.

3.5 The USGS may request rerun analyses on up to ten percent of the yearly sample total. The cost of requested reruns shall be paid by the Contractor if the new value is outside of the 2 sigma error of the first value, and by the USGS if the rerun value lies within the 2 sigma error of the first value.

4 Methods of Analysis

4.1 Methods of analysis shall be equivalent to the methods listed in this contract or conform to identical methods where specified.

4.2 The analytical methods shall not be changed during the life of the contract without the written approval of the Technical Liaison. A full and immediate description of the proposed change shall be sent to the Technical Liaison in writing prior to any changes and approved by the Technical Liaison prior to any change.

4.3 The suitability of the Contractor's methods shall be established by demonstration of ability to provide analyses of the required accuracy (as determined by analysis of standards), precision (as determined by replicate analyses) and detection level (as determined by low level standards). Limits of determination are indicated in Section 4.7 under the method summary of each analytical method.

4.4 Specific requirements pertaining to method of analysis, detection level, accuracy, precision, error and reporting units are specified in Section 4.7 for each method of analysis. Each method has been notated as having to be similar in terms of the method summary provided or identical to the method provided. Similar methods are expected to meet or exceed the number of elements, accuracy, precision, and lower limit of determination benchmarks.

4.5 The USGS has the right to specify and change, if necessary, the number of significant figures to be used in reporting. This information will be provided, in writing, to the Contractor by the Technical Liaison.

4.6 Minimum Quality control requirements for all analytical methods shall include the following: one analytical blank per 20 samples, one well characterized standard reference material (SRM) per 20 samples (SRM should be a matrix similar to the unknowns), one analytical duplicate per 20 samples, and one sample duplicate per 20 samples.

4.7 No elements will be reported to the USGS as “greater than” values. When elements report above the upper detection limits, the Contractor will dilute the sample during the run and report the overlimit value in the official data report.

4.8 Required analytical methods procedures on solid samples:

Method number 1 - Total Sulfur - SIMILAR Method number 2 - Total Carbon SIMILAR Method number 3 - Carbonate Carbon SIMILAR Method number 4 - Mercury - SIMILAR Method number 5 – High Concentration Mercury – SIMILAR Method number 6 - Fluoride SIMILAR Method number 7 - Chloride SIMILAR Method number 8 - Ferrous oxide -SIMILAR Method number 9 - Essential and non-essential water - SIMILAR Method number 10 - Gold – SIMILAR Method number 11 - Gold, Platinum, and Palladium – SIMILAR Method number 12 – Ore Grade Au, Pd, and Pt by Lead Fire Assay – SIMILAR Method number 13 – PGE’s by Nickel Sulfide Fire Assay and ICP-MS- SIMILAR Method number 14 – PGE’s by Nickel Sulfide Fire Assay and INAA- SIMILAR Method number 15 – INAA- SIMILAR Method number 16 - WDXRF Major Element Analysis - SIMILAR Method number 17 - WDXRF Base Metals – SIMILAR Method number 18 - WDXRF REE – SIMILAR Method number 19 – Pressed Pellet EDXRF - SIMILAR Method number 20 - ICP-OES Major Element Analysis - SIMILAR Method number 21 – 49 Element ICP-OES-MS multi-acid near total – SIMILAR Method number 22 – Multi-acid Digestion and Fusion of Residue – SIMILAR Method number 23 - 61 Element ICP-OES-MS Sodium Peroxide Fusion – SIMILIAR Method number 24 – ICP-MS High Concentration Rare Earth Element - SIMILAR Method number 25 – Microwave Digestion – SIMILAR Method number 26 – 5 Stage Sequential Extractions – SIMILAR Method number 27 – Deionized Water Leach – SIMILAR Method number 28 – Ammonium Acetate Leach – SIMILAR Method number 29 – Cold Hydroxylamine-HCL Leach– SIMILAR Method number 30 – Hot Hydroxylamine-HCL Leach – SIMILAR Method number 31 – Sodium Pyrophosphate Leach – SIMILAR Method number 32 – Aqua Regia Digestion – SIMILAR Method number 33 – ICP-OES/ICP-MS Water – SIMILAR Method number 34 – Trace Levels Water – SIMILAR Method number 35 – Single Elements Water – SIMILAR Method number 36 – Precious Metals Water - SIMILAR Method number 37 - Sample Preparation - IDENTICAL

Method 1 – Total Sulfur

Summary Total Sulfur is determined in geologic materials by combustion followed by infrared detection on LECO instrumentation. A weighed sample is mixed with an accelerator and heated via an induction furnace to oxidize sulfur to sulfur dioxide. Moisture and dust are removed and the sulfur dioxide gas is then measured by a solid state infrared detector.

Analytical Performance The reporting limit range for Total Sulfur is from 0.005% to 100%. Data will be deemed acceptable if recovery of total sulfur is +15% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 15%.

Method 2 – Total Carbon

Summary Total Carbon is determined in geologic materials by combustion followed by infrared detection on LECO instrumentation. A weighed sample is mixed with an accelerator and heated via an induction furnace to oxidize carbon to CO2. Moisture and dust are removed and the carbon dioxide gas is then measured by a solid state infrared detector.

Analytical Performance The reporting range for total carbon is 0.01% to 30%. Data will be deemed acceptable if recovery of total carbon is +15% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 15%.

Method 3 – Carbonate Carbon

Summary Carbonate carbon (inorganic carbon) in geologic materials is determined as carbon dioxide by combustion. The sample is treated with dilute perchloric acid to release inorganic carbon as CO2 in a closed system. The CO2 can then be measured by infrared detection.

Analytical Performance The reporting limit range for Carbonate Carbon is 0.01% to 14%. Data will be deemed acceptable if recovery for carbonate carbon is +15% at five times the lower limit of determination and the calculated percent RSD of duplicate samples is no greater than 15%.

Method 4 – Mercury

Summary Mercury is determined by cold vapor atomic absorption spectrometry (CVAAS). The sample is digested using a mixture of sulfuric and nitric acids, and dilute potassium permanganate and potassium persulfate in a water bath. Excess potassium permanganate is reduced by hydroxylamine sulfate solution, then Hg(II) is reduced by a solution of Tin(II) chloride (or stannous chloride).

Mercury vapor is separated and measured with a FIMS 100 Mercury Analysis System.

Analytical Performance The reporting limit range for Mercury is 1 ppb to 100,000 ppb. Data will be deemed acceptable if

140G0222R0015 recovery of Hg is + 20 percent at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20 percent.

Method 5 – High Concentration Mercury in Solid Samples

Summary Samples are digested with HNO3 AND HCl in a water bath for 1.5 hours and submitted to ICP-OES for Hg analysis.

Analytical Performance The reporting limit range for high concentration mercury in solid samples is 10 ppm to 10,000 ppm. Data will be deemed acceptable if recovery of Mercury is ±20% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20%.

Method 6 – Fluoride

Summary Fluoride is determined by ion-selective electrode (ISE) following a sodium hydroxide fusion. The sample is fused with a mixture of sodium hydroxide, potassium nitrate and silica to release fluoride ions from the sample matrix followed by dissolution of the fusion cake in dilute nitric acid. Prior to measuring the fluoride activity of the sample solution using an ion-selective electrode, an ammonium citrate solution is added to buffer the pH, maintain a constant ionic strength, and dissociate any metal ion-fluoride complexes. The fluoride concentration in the sample is then determined by interpolation from standard calibration curves.

Analytical Performance The reporting limits for F are 0.01%-10%. Data will be deemed acceptable if recovery of F is +20 percent at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20 percent.

Method 7 – Chloride

Summary Chloride is determined by ion selective electrode (ISE) following a potassium hydroxide fusion. The sample is fused with a mixture of potassium hydroxide and potassium nitrate to release chloride ions from the sample matrix followed by dissolution of the fusion cake in dilute nitric acid. Prior to measuring the chloride activity of the sample solution using an ion-selective electrode, the sample is spiked with known chloride amount and an ammonium citrate solution is added to buffer the pH, maintain a constant ionic strength, and dissociate any metal ion-chloride complexes. The chloride concentration in the sample is then determined by interpolation from standard calibration curves.

Analytical Performance The reporting limits for Cl are 0.01%-30%. Data will be deemed acceptable if recovery of the Cl is +20 percent at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20 percent.

140G0222R0015

Method 8 - Ferrous Oxide

Summary The sample is digested by using a mixture of sulfuric, hydrofluoric and hydrochloric acids. The solution is titrated with a standardized solution of potassium dichromate to determine Fe²+ using a sodium diphenylamine sulphonate indicator.

Analytical Performance The reporting limits for FeO are 0.05%-50%. Data will be deemed acceptable if recovery of FeO is +15% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 15%.

Method 9 - Essential and Non-Essential Water

Summary Essential water is determined by drying the sample for 1 hour at 105±5°C to remove H2O (hydroscopic water). Then the sample is heated at 950°C by using a tube furnace. The H2O+ expelled from the sample is absorbed by magnesium perchlorate. The gain in weight of the perchlorate is used to calculate the amount of combined water in the sample.

Non-essential water is determined by drying the sample for 2 hours at 105 ±5°C. From the loss in weight, non-essential water, in percent, is calculated.

Analytical Performance The lower reporting limit is 0.1 percent for the two forms of water. The total water, moisture (H2O-), and essential water (H2O+) are reported as weight percent. Data will be deemed acceptable if recovery of essential and non-essential water is +15% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 15%.

Method 10 - Gold

Summary Gold is determined in geological materials by lead fusion fire assay and ICP- OES/ICP-MS. The sample is mixed with fluxing agents to assist with melting, and to promote separation from waste (gangue) materials from the precious metals. After cooling, the gangue is separated and discarded as a glassy slag from the precious metal- containing lead button. This button is further heated on an absorbing magnesium oxide crucible to remove the lead and trace amounts of base metals, and a small silver prill is left containing the precious metals. The silver prill is digested in aqua regia, then analyzed by ICP-OES and ICP-MS. Lower concentrations of Gold are measured by ICP-MS. Higher concentrations are measured by

ICP-OES.

The reporting limit range for Gold is 1 ppb to 10,000 ppb.

Analytical Performance The reporting limits for gold is 1 ppb-10,000 ppb. Data will be deemed acceptable if recovery of gold is +20 percent at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20 percent.

140G0222R0015

Method 11 – Gold, Platinum, and Palladium

Summary Gold, platinum, and palladium are determined in geological materials by ICP-MS after collection by fire assay. An assay ton (30 grams) is weighed into a crucible with 150 grams of flux and mixed. One mg of silver nitrate is added and covered with borax, then placed in the furnace for 45 minutes at 1050oC. The melt is poured into a cast iron mold, cooled, and hammered to free the lead button from the slag. The lead button is placed on a cupel and heated at 950oC until all the lead is removed. The resulting dore bead is dissolved in a mixture of HNO3 and HCl and heated in a water bath. The final solution is adjusted to 10 ml and introduced into the ICP-MS.

Method 11 Elements and Reporting Limits

Element Concentration Range

Data will be deemed acceptable if recovery of Au, Pt, and Pd is +/-20% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20%.

Method 12 – Ore Grade Au, Pd, Pt by Lead Fire Assay and ICP-OES

Summary The sample is weighed and mixed with fluxing agents to assist with melting and promote separation from waste (gangue) materials from the precious metals. After cooling, the gangue is separated and discarded as a glassy slag from the precious metal containing lead button. This button is further heated on an absorbing magnesium oxide crucible to remove the lead and trace amounts of base metals. A small silver prill is left containing the precious metals. The silver prill is digested in aqua regia then analyzed by ICP-

OES.

Method 12 Elements and Reporting Limits

Au, Gold 0.1 ppm 100 ppm

Pd, Palladium 0.1 ppm 100 ppm

Pt, Platinum 0.1 ppm 100 ppm

Method 13 – Platinum Group Elements by Nickel Sulfide Fire Assay and ICP-MS

Summary The sample is mixed with nickel and sulfur to collect the suite of PGEs. Fluxing agents are added to assist with melting and to promote separation from waste (gangue) materials. After cooling, the gangue is

Au, Gold 1 ppb 10,000 ppb

Pd, Palladium 1 ppb 10,000 ppb

Pt, Platinum 5 ppb 10,000 ppb

140G0222R0015 separated and discarded as a glassy slag from the PGE-containing nickel sulfide button. This button is dissolved in concentrated hydrochloric acid, co-precipitated with tellurium and filtered. The residue is then analyzed by ICP-MS.

Method 13 Elements and Reporting Limits

Ir, Iridium 1 ppb 1,000 ppb

Os, Osmium 10 ppb 1,000 ppb

Data will be deemed acceptable if recovery of all elements is ±20% at five times the LOD and the calculated percent RSD of duplicate samples is no greater than 20%.

Method 14 – Platinum Group Elements by Nickel Sulfide Fire Assay and Instrumental Neutron Activation Analysis (INAA)

Summary The sample is mixed with nickel and sulfur to collect the suite of PGEs. Fluxing agents are added to assist with melting and to promote separation from waste (gangue) materials. After cooling, the gangue is separated and discarded as a glassy slag from the PGE-containing nickel sulfide button. This button is dissolved in concentrated hydrochloric acid, co-precipitated with tellurium and filtered. The residue is then analyzed by instrumental neutron activation analysis.

Method 14 Elements and Reporting Limits

Ir, Iridium 1 ppb 1,000 ppb

Os, Osmium 10 ppb 1,000 ppb

Pd, Palladium 1 ppb 10,000 ppb

Pt, Platinum 1 ppb 10,000 ppb

Rh, Rhodium 1 ppb 1,000 ppb

Ru, Ruthenium 1 ppb 20,000 ppb

Data will be deemed acceptable if recovery of all elements is ±20% at five times the LOD and the

Pd, Palladium 1 ppb 10,000 ppb

Pt, Platinum 1 ppb 10,000 ppb

Rh, Rhodium 1 ppb 1,000 ppb

Ru, Ruthenium 1 ppb 20,000 ppb

140G0222R0015 calculated percent RSD of duplicate samples is no greater than 20%.

Method 15– Instrumental Neutron Activation Analysis (INAA)

Ag, Silver 5 ppm 1%

Au, Gold 5 ppb 50 ppm

Ba, Barium 100 ppm 5%

Br, Bromine 1 ppm 1000 ppm

Ca, Calcium 1% 50%

Ce, Cerium 3 ppm 1%

Cr, Chromium 10 ppm 5%

Cs, Cesium 3 ppm 1%

Co, Cobalt 5 ppm 0.5%

Eu, Europium 0.02 ppm 0.1%

Fe, Iron 0.1% 50%

Hf, Hafnium 1 ppm 0.2%

Hg, Mercury 1 ppm 1000 ppm

Ir, Iridium 20 ppb 10 ppm

La, Lanthanum 1 ppm 0.5%

Lu, Lutetium 0.05 ppm 0.1%

Mo, Molybdenum 5 ppm 0.5%

Na, Sodium 0.05% 20%

Nd, Neodymium 10 ppm 1%

Ni, Nickel 100 ppm 10%

Ru, Ruthenium 30 ppm 0.5%

Sb, Antimony 0.2 ppm 0.5%

Sc, Scandium 1 ppm 0.5%

Se, Selenium 5 ppm 0.5%

Sm, Samarium 0.5 ppm 0.5%

Sr, Strontium 500 ppm 5%

Ta, Tantalum 1 ppm 0.1%

Tb, Terbium 0.5 ppm 0.1%

Th, Thorium 0.5 ppm 0.2%

U, Uranium 0.5 ppm 0.1%

W, Tungsten 4 ppm 0.5%

Y, Yttrium 0.5 ppm 1%

Zn, Zinc 50 ppm 10%

Analytical Performance Data is deemed acceptable if recovery for all elements is ±15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 16 – WDXRF Major Element Analysis

Summary Major elements are determined in rocks and minerals by wavelength dispersive x-ray fluorescence spectrometry (WDXRF). The sample is fused with lithium metaborate/lithium tetraborate flux and the resultant glass disk is introduced into the WDXRF and irradiated by an x-ray tube. The method also provides a gravimetric loss on ignition (LOI).

Reporting Limit for major oxides

Major Element Oxides Concentration Range

Al2O3 .01% 75%

BaO .01% 10%

CaO .01% 60%

Cr2O3 .01% 10%

Fe2O3 .01% 75%

K2O .01% 30%

MgO .01% 10%

MnO .01% 10%

Na2O .01% 30%

P2O5 .01% 25%

SiO2 .01% 90%

SrO .01% 10%

TiO2 .01% 25%

V2O5 .01% 10%

LOI .01% 50%

140G0222R0015

Analytical Performance Data will be deemed acceptable if recovery of the major oxides is +5 percent at the LOD and the calculated percent RSD of duplicate samples is no greater than 5 percent.

Method 17 – WDXRF Base Metals

Summary:

Samples are fused with lithium borate and fused into a glass disk to determine high content base metal elements in rocks, sediments, and soils. The disk is then analyzed by WDXRF.

Method 17 Elements and Reporting Limits

Co, Cobalt 0.05% 20%

Cu, Copper 0.05% 20%

Fe, Iron 0.05% 20%

Ni, Nickel 0.05% 20%

Pd, Lead 0.05% 20%

Zn, Zinc 0.05% 20%

Analytical Performance

Data will be deemed acceptable if recovery of the base metals is ±5% at the LOD and the calculated percent RSD of duplicate samples is no greater than 5%.

Method 18 – Rare Earth Elements by WDXRF

Ce, Cerium 0.02% 20%

Dy, Dysprosium 0.02% 20%

Er, Erbium 0.02% 20%

Eu, Europium 0.02% 20%

Gd, Gadolinium 0.02% 20%

Ho, Holmium 0.02% 20%

La, Lanthanum 0.02% 20%

Lu, Lutetium 0.02% 20%

Nd, Neodymium 0.02% 20%

Pr, Praseodymium 0.02% 20%

Sm, Samarium 0.02% 20%

Tb, Terbium 0.02% 20%

Th, Thorium 0.02% 20%

Tm, Thulium 0.02% 20%

U, Uranium 0.02% 20%

Y, Yttrium 0.02% 20%

Yb, Ytterbium 0.02% 20%

Analytical Performance Data will be deemed acceptable if recovery of the rare earth elements is ±5% at the LOD and the calculated percent RSD of duplicate samples is no greater than 5%.

Method 19 – Trace Elements by Pressed Pellet EDXRF

Ba, Barium 10 ppm 4000 ppm

Nb, Niobium 2 ppm 4000 ppm

Rb, Rubidium 2 ppm 4000 ppm

Sr, Strontium 2 ppm 4000 ppm

Y, Yttrium 2 ppm 4000 ppm

Zr, Zirconium 3 ppm 4000 ppm

Analytical Performance Data will be deemed acceptable if recovery of the minor elements is ±5% at the LOD and the calculated percent RSD of duplicate samples is no greater than 5%.

Method 20 – ICP-OES Major Element Analysis Using a Lithium Metaborate Fusion

Summary:

Sixteen major, minor, and trace elements are determined in geological materials using a lithium metaborate fusion with an ICP-OES finish. The sample is fused with lithium metaborate and dissolved using dilute HNO³ in a graphite crucible. The resulting solution is analyzed by ICP-OES.

Reporting limits for ICP-OES Major Element

Al2O3 .01% 75%

BaO .01% 10%

CaO .01% 60%

Cr2O3 .01% 10%

Fe2O3 .01% 75%

K2O .01% 25%

MgO .01% 30%

MnO .01% 10%

Na2O .01% 30%

Nb, Niobium .001% 10%

P2O5 .01% 25%

SiO2 .01% 90%

SrO .01% 10%

TiO2 .01% 25%

Y, Yttrium .001% 10%

Zr, Zirconium .001% 10%

LOI 0.01% 50%

Data will be deemed acceptable if they are +/- 15% at 5 times the lower limit of detection, and the calculated RSD of duplicate samples is no greater than 15%.

Method 21 – 49 Element ICP-OES-MS Multi-Acid Digestion

Summary Forty-nine major, minor, and trace elements are determined in geological materials. The sample is decomposed using a mixture of hydrochloric, nitric, perchloric, and hydrofluoric acids at low temperature. The resulting solution is analyzed by ICP-OES and ICP-MS.

Reporting limits for 49 elements by ICP-OES-MS

Ag, Silver 0.01 ppm 100 ppm

Al, Aluminum 0.01% 15%

As, Arsenic 0.2 ppm 1%

Ba, Barium 1 ppm 1%

Be, Beryllium 0.05 ppm 2500 ppm

Bi, Bismuth 0.01 ppm 1%

Ca, Calcium, 0.01% 15%

Cd, Cadmium 0.02 ppm 1%

Ce, Cerium 0.01 ppm 1000 ppm

Co, Cobalt 0.05 ppm 1%

Cr, Chromium 0.5 ppm 1%

Cs, Cesium 0.01 ppm 1000 ppm

Cu, Copper 0.5 ppm 1%

Fe, Iron 0.01% 15%

Ga, Gallium 0.05 ppm 500 ppm

Hf, Hafnium 0.1 ppm 500 ppm

In, Indium 0.005 ppm 500 ppm

K, Potassium 0.01% 15%

La, Lanthanum 0.5 ppm 1%

Li, Lithium 0.1 ppm 1%

Lu, Lutetium 0.01 ppm 1000 ppm

Mg, Magnesium 0.01% 15%

Mn, Manganese 1 ppm 1%

Mo, Molybdenum 0.05 ppm 1%

Na, Sodium 0.01% 15%

Nb, Niobium 0.1 ppm 0.1%

Ni, Nickel 0.5 ppm 1%

P, Phosphorous 10 ppm 15%

Pb, Lead 0.1 ppm 1%

Rb, Rubidium 0.1 ppm 1%

S, Sulfur 0.01% 5%

Sb, Antimony 0.05 ppm 1%

Sc, Scandium 0.1 ppm 1%

Se, Selenium 0.5 ppm 0.1%

Sn, Tin 0.2 ppm 0.1%

Sr, Strontium 0.2 ppm 1%

Ta, Tantalum 0.05 ppm 1%

Tb, Terbium 0.05 ppm 1%

Te, Tellurium 0.01 ppm 0.1%

Th, Thorium 0.1 ppm 1%

Ti, Titanium 0.01% 15%

Tl, Thallium 0.01 ppm 1%

U, Uranium 0.005 ppm 1%

V, Vanadium 0.5 ppm 1%

W, Tungsten 0.1 ppm 1%

Y, Yttrium 0.1 ppm 1%

Yb, Ytterbium 0.1 ppm 0.1%

Zn, Zinc 0.5 ppm 1%

Zr, Zirconium 0.5 ppm 1%

Analytical Performance Data is deemed acceptable if recovery for all elements is +/- 15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 22 – Multi-acid Digestion with Fusion of Residue by ICP-OES/ICP-MS

Summary This method describes the total sample digestion of rocks, sediments, and soils. Samples are digested in a Teflon vessel with hot hydrochloric, nitric, hydrofluoric and perchloric acids and filtered. The residue is fused with sodium peroxide and sodium hydroxide and quenched in the original filtrate. Samples are then analyzed by ICP-OES and ICP-MS.

Reporting Limits for Multi-acid Digestion with Fusion of Residue

Ag, Silver 1 ppm 1000 ppm

Al, Aluminum 0.01% 25%

As, Arsenic 5 ppm 10%

B, Boron 10 ppm 1%

Ba, Barium 0.5 ppm 1%

Be, Beryllium 5 ppm 0.25%

Bi, Bismuth 0.1 ppm 0.1%

Ca, Calcium 0.01% 35%

Cd, Cadmium 0.2 ppm 1%

Ce, Cerium 0.1 ppm 1%

Co, Cobalt 0.5 ppm 1%

Cr, Chromium 10 ppm 10%

Cs, Cesium 0.1 ppm 1%

Cu, Copper 5 ppm 5%

Dy, Dysprosium 0.05 ppm 0.1%

Er, Erbium 0.05 ppm 0.1%

Eu, Europium 0.05 ppm 0.1%

Fe, Iron 0.01% 30%

Ga, Gallium 0.01 ppm 0.1%

Gd, Gadolinium 0.05 ppm 0.1%

Ge, Germanium 1 ppm 0.1%

Hf, Hafnium 1 ppm 1%

Ho, Holmium 0.05 ppm 0.1%

In, Indium 0.2 ppm 0.1%

K, Potassium 0.01% 25%

La, Lanthanum 0.1 ppm 1%

Li, Lithium 10 ppm 5%

Lu, Lutetium 0.05 ppm 0.1%

Mg, Magnesium 0.01% 30%

Mn, Manganese 10 ppm 10%

Mo, Molybdenum 2 ppm 1%

Nb, Niobium 0.1 ppm 1%

Nd, Neodymium 0.1 ppm 1%

Ni, Nickel 5 ppm 1%

P, Phosphorous 0.01% 25%

Pb, Lead 5 ppm 5%

Pr, Praseodymium 0.05 ppm 0.1%

Rb, Rubidium 0.2 ppm 1%

Re, Rhenium 0.02 ppm 0.1%

S, Sulfur 0.1% 40%

Sb, Antimony 0.1 ppm 1%

Sc, Scandium 5 ppm 5%

Se, Selenium 5 ppm 0.1 %

Si, Silica 0.01% 40%

Sm, Samarium 0.1 ppm 0.1%

Sn, Tin 1 ppm 1%

Sr, Strontium 0.1 ppm 1%

Ta, Tantalum 0.5 ppm 1 %

Tb, Terbium 0.05 ppm 0.1%

Te, Tellurium 0.5 ppm 0.1%

Th, Thorium 0.1 ppm 0.1%

Ti, Titanium 0.01% 25%

Tl, Thallium 0.5 ppm 0.1%

Tm, Thulium 0.05 ppm 0.1%

U, Uranium 0.05 ppm 0.1%

V, Vanadium 5 ppm 1%

W, Tungsten 1 ppm 1%

Y, Yttrium 0.5 ppm 1%

Yb, Ytterbium 0.1 ppm 0.1%

Zn, Zinc 5 ppm 5%

Zr, Zirconium 0.5 ppm 1%

Data is deemed acceptable if recovery for all elements is +/- 15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 23 – 61 Element ICP-OES-MS Sodium Peroxide Fusion

Summary Sixty-one elements are determined in rocks, minerals, and soils. Samples are fused at 750°C with sodium peroxide and the fusion cake dissolved in a dilute nitric acid. The resulting solution is analyzed by ICP- OES and ICP-MS.

Reporting limits for 61 elements by ICP-OES-MS

Ag, Silver 1 ppm 1000 ppm

Al, Aluminum 0.01% 25%

As, Arsenic 5 ppm 10%

B, Boron 10 ppm 1%

Ba, Barium 0.5 ppm 1%

Be, Beryllium 5 ppm 0.25%

Bi, Bismuth 0.1 ppm 0.1%

Ca, Calcium 0.01% 35%

Cd, Cadmium 0.2 ppm 1%

Ce, Cerium 0.1 ppm 1%

Co, Cobalt 0.5 ppm 1%

Cr, Chromium 10 ppm 10%

Cs, Cesium 0.1 ppm 1%

Cu, Copper 5 ppm 5%

Dy, Dysprosium 0.05 ppm 0.1%

Er, Erbium 0.05 ppm 0.1%

Eu, Europium 0.05 ppm 0.1%

Fe, Iron 0.01% 30%

Ga, Gallium 0.01 ppm 0.1%

Gd, Gadolinium 0.05 ppm 0.1%

Ge, Germanium 1 ppm 0.1%

Hf, Hafnium 1 ppm 1%

Ho, Holmium 0.05 ppm 0.1%

In, Indium 0.2 ppm 0.1%

K, Potassium 0.01% 25%

La, Lanthanum 0.1 ppm 1%

Li, Lithium 10 ppm 5%

Lu, Lutetium 0.05 ppm 0.1%

Mg, Magnesium 0.01% 30%

Mn, Manganese 10 ppm 10%

Mo, Molybdenum 2 ppm 1%

Nb, Niobium 0.1 ppm 1%

Nd, Neodymium 0.1 ppm 1%

Ni, Nickel 5 ppm 1%

P, Phosphorous 0.01% 25%

Pb, Lead 5 ppm 5%

Pr, Praseodymium 0.05 ppm 0.1%

Rb, Rubidium 0.2 ppm 1%

Re, Rhenium 0.02 ppm 0.1%

S, Sulfur 0.1% 40%

Sb, Antimony 0.1 ppm 1%

Sc, Scandium 5 ppm 5%

Se, Selenium 5 ppm 0.1 %

Si, Silica 0.01% 40%

Sm, Samarium 0.1 ppm 0.1%

Sn, Tin 1 ppm 1%

Sr, Strontium 0.1 ppm 1%

Ta, Tantalum 0.5 ppm 1 %

Tb, Terbium 0.05 ppm 0.1%

Te, Tellurium 0.5 ppm 0.1%

Th, Thorium 0.1 ppm 0.1%

Ti, Titanium 0.01% 25%

Tl, Thallium 0.5 ppm 0.1%

Tm, Thulium 0.05 ppm 0.1%

U, Uranium 0.05 ppm 0.1%

V, Vanadium 5 ppm 1%

W, Tungsten 1 ppm 1%

Y, Yttrium 0.5 ppm 1%

Yb, Ytterbium 0.1 ppm 0.1%

Zn, Zinc 5 ppm 5%

Zr, Zirconium 0.5 ppm 1%

Analytical Performance Data is deemed acceptable if recovery for all elements is +/-15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 24 – High Concentration Rare Earth Elements ICP-MS Sodium Peroxide Fusion

Summary The rare earth elements plus lanthanum, uranium and yttrium are determined in geological materials using inductively coupled plasma mass spectrometry (ICP-MS). The sample is decomposed using a sodium peroxide-sodium hydroxide fusion to ensure complete dissolution of the elements. The digested sample is aspirated into a radio frequency plasma and the resultant ions for each element are separated on a mass to charge ratio and measured using an electron multiplier detector.

Note: This method is designed for high-concentration REE samples only. Typically, samples must contain at least 1000 ppm total REE. Low concentration REE samples are measured by the 61 Element ICP-OES- MS Sodium Peroxide Fusion method.

Reporting limits for High Concentration Rare Earth Elements

Element Lower Limit

Ce, Cerium 0.5 ppm

Dy, Dysprosium 0.5 ppm

Er, Erbium 0.03 ppm

Eu, Europium 0.03 ppm

Gd, Gadolinium 0.05 ppm

Ho, Holmium 0.01 ppm

La, Lanthanum 0.5 ppm

Lu, Lutetium 0.01 ppm

Nd, Neodymium 0.1 ppm

Pr, Praseodymium 0.03 ppm

Sm, Samarium 0.03 ppm

Tb, Terbium 0.01 ppm

U, Uranium 0.05 ppm

Y, Yttrium 0.5 ppm

Yb, Ytterbium 0.03 ppm

Data is deemed acceptable if recovery for all elements is +/-15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 25 – Microwave Digestion

Summary This method describes the rapid sample preparation of rocks, minerals and soils using a microwave digestion system. Water and polar compounds readily absorb microwave (infrared) energy rapidly, resulting in a quick and efficient digestion. The resulting solution is analyzed by ICP-OES and ICP-MS.

Method 25 Elements and Reporting Limits

Al, Aluminum 0.01% 25%

As, Arsenic 0.1 ppm 1%

Au, Gold 0.005 ppm 10 ppm

B, Boron 5 ppm 0.1%

Ba, Barium 1 ppm 1%

Be, Beryllium 0.05 ppm 0.1%

Bi, Bismuth 0.01 ppm 0.1%

Ca, Calcium 0.01% 25%

Cd, Cadmium 0.01 ppm 0.1%

Ce, Cerium 0.01 ppm 0.1%

Co, Cobalt 0.1 ppm 1%

Cr, Chromium 0.5 ppm 1%

Cs, Cesium 0.05 ppm 0.1%

Cu, Copper 0.5 ppm 1%

Fe, Iron 0.01% 30%

Ga, Gallium 0.05 ppm 0.1%

Ge, Germanium 0.05 ppm 0.1%

Hf, Hafnium 0.02 ppm 0.1%

Hg, Mercury 0.01 ppm 100 ppm

In, Indium 0.005 ppm 0.1%

K, Potassium 0.01% 25%

La, Lanthanum 0.1 ppm 0.1%

Li, Lithium 0.1 ppm 1%

Mg, Magnesium 0.01% 25%

Mn, Manganese 1 ppm 1%

Mo, Molybdenum 0.05 ppm 1%

Na, Sodium 0.01% 25%

Nb, Niobium 0.05 ppm 0.1%

Ni, Nickel 0.5 ppm 1%

P, Phosphorous 10 ppm 25%

Pb, Lead 0.1 ppm 1%

Rb, Rubidium 0.1 ppm 0.1%

Re, Rhenium 0.001 ppm 0.1%

S, Sulfur 0.01% 30%

Sb, Antimony 0.05 ppm 0.1%

Sc, Scandium 0.1 ppm 0.1%

Se, Selenium 0.2 ppm 0.1 %

Sn, Tin 0.2 ppm 0.1%

Sr, Strontium 0.2 ppm 0.1%

Ta, Tantalum 0.01 ppm 0.1%

Te, Tellurium 0.01 ppm 0.1%

Th, Thorium 0.1 ppm 0.1%

Ti, Titanium 0.01% 25%

Tl, Thallium 0.01 ppm 0.1%

U, Uranium 0.05 ppm 0.1%

V, Vanadium 0.5 ppm 0.1%

W, Tungsten 0.05 ppm 0.1%

Y, Yttrium 0.05 ppm 0.1%

Zn, Zinc 0.5 ppm 1%

Zr, Zirconium 0.5 ppm 0.1%

Analytical Performance Data is deemed acceptable if recovery for all elements is ±15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 26 – 5 Stage Sequential Extractions

Summary Stage 1 – Extraction of absorbed, exchanged and carbonate bound metals Stage 2 – Extraction of metals bound to hydrous iron and manganese oxides Stage 3 – Extraction of metals bound to crystalline iron oxides Stage 4 – Extraction of metals in sulfide phase Stage 5 – Extraction of residual fraction

Method 26 Elements and Reporting Limits

Ag, Silver 0.002 ppm 100 ppm

Al, Aluminum 0.01% 25%

As, Arsenic 0.01 ppm 1%

Au, Gold 0.005 ppm 10 ppm

B, Boron 5 ppm 0.1%

Ba, Barium 1 ppm 1%

Be, Beryllium 0.05 ppm 0.1%

Bi, Bismuth 0.01 ppm 0.1%

Ca, Calcium 0.01% 25%

Cd, Cadmium 0.005ppm 0.1%

Ce, Cerium 0.005 ppm 0.1%

Co, Cobalt 0.01 ppm 1%

Cr, Chromium 0.005 ppm 1%

Cs, Cesium 0.005 ppm 0.1%

Cu, Copper 0.005 ppm 1%

Fe, Iron 5 ppm 30%

Ga, Gallium 0.05 ppm 0.1%

Ge, Germanium 0.05 ppm 0.1%

Hf, Hafnium 0.01 ppm 0.1%

Hg, Mercury 0.01 ppm 100 ppm

In, Indium 0.005 ppm 0.1%

K, Potassium 5 ppm 25%

La, Lanthanum 0.005 ppm 0.1%

Li, Lithium 0.05 ppm 1%

Mg, Magnesium 1 ppm 25%

Mn, Manganese 0.1 ppm 1%

Mo, Molybdenum 0.005 ppm 1%

*Na, Sodium 10 ppm 25%

Nb, Niobium 0.01 ppm 0.1%

Ni, Nickel 0.005 ppm 1%

P, Phosphorous 0.5 ppm 25%

Pb, Lead 0.05 ppm 1%

Rb, Rubidium 0.005 ppm 0.1%

Re, Rhenium 0.001 ppm 0.1%

S, Sulfur 0.01% 30%

Sb, Antimony 0.001 ppm 0.1%

Sc, Scandium 0.1 ppm 0.1%

Se, Selenium 0.005 ppm 0.1 %

Sn, Tin 0.005 ppm 0.1%

Sr, Strontium 0.05 ppm 0.1%

Ta, Tantalum 0.01 ppm 0.1%

Te, Tellurium 0.01 ppm 0.1%

Th, Thorium 0.1 ppm 0.1%

Ti, Titanium 0.005% 25%

Tl, Thallium 0.005 ppm 0.1%

U, Uranium 0.001 ppm 0.1%

V, Vanadium 0.05 ppm 0.1%

W, Tungsten 0.01 ppm 0.1%

Y, Yttrium 0.005 ppm 0.1%

Zn, Zinc 0.1 ppm 1%

Zr, Zirconium 0.05 ppm 0.1%

* Na, Sodium is not reported in Stage 1 of the Sequential Extraction Method because sodium acetate is used in the extraction of the carbonate bound metals. Na, Sodium is reported on Stage 2-5.

Analytical Performance Data is deemed acceptable if recovery for all elements is ±15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 27 – Deionized Water Leach

Summary The sample is agitated on a horizontal shaker for 2 hours in 30 mL of deionized water. After centrifuging and decanting, the supernatant is acidified to 0.1% with HNO3 then analyzed by ICP-OES and ICP-MS.

Method 27 Elements and Reporting Limits

Ag, Silver 2 ppb 100 ppm

Al, Aluminum 100000 ppb 25%

As, Arsenic 10 ppb 1%

Au, Gold 5 ppb 10 ppm

B, Boron 2000 ppb 0.1%

Ba, Barium 50 ppb 1%

Be, Beryllium 50 ppb 0.1%

Bi, Bismuth 5 ppb 0.1%

Ca, Calcium 10000 ppb 25%

Cd, Cadmium 10 ppb 0.1%

Ce, Cerium 5 ppb 0.1%

Co, Cobalt 10 ppb 1%

Cr, Chromium 5 ppb 1%

Cs, Cesium 5 ppb 0.1%

Cu, Copper 5 ppb 1%

Fe, Iron 5000 ppb 30%

Ga, Gallium 50 ppb 0.1%

Ge, Germanium 50 ppb 0.1%

Hf, Hafnium 10 ppb 0.1%

Hg, Mercury 10 ppb 100 ppm

In, Indium 5 ppb 0.1%

K, Potassium 5000 ppb 25%

La, Lanthanum 5 ppb 0.1%

Li, Lithium 50 ppb 1%

Mg, Magnesium 1000 ppb 25%

Mn, Manganese 100 ppb 1%

Mo, Molybdenum 5 ppb 1%

Na, Sodium 10000 ppb 25%

Nb, Niobium 10 ppb 0.1%

Ni, Nickel 5 ppb 1%

P, Phosphorous 500 ppb 25%

Pb, Lead 50 ppb 1%

Rb, Rubidium 5 ppb 0.1%

Re, Rhenium 1 ppb 0.1%

S, Sulfur 100000 ppb 30%

Sb, Antimony 1 ppb 0.1%

Sc, Scandium 100 ppb 0.1%

Se, Selenium 5 ppb 0.1 %

Sn, Tin 5 ppb 0.1%

Sr, Strontium 50 ppb 0.1%

Ta, Tantalum 10 ppb 0.1%

Te, Tellurium 10 ppb 0.1%

Th, Thorium 10 ppb 0.1%

Ti, Titanium 100000 ppb 25%

Tl, Thallium 5 ppb 0.1%

U, Uranium 1 ppb 0.1%

V, Vanadium 50 ppb 0.1%

W, Tungsten 10 ppb 0.1%

Y, Yttrium 5 ppb 0.1%

Zn, Zinc 100 ppb 1%

Zr, Zirconium 50 ppb 0.1%

Data is deemed acceptable if recovery for all elements is ±15% at five times the Lower Limit of Determination (LOD) and the calculated Relative Standard Deviation (RSD) of duplicate samples is no greater than 15%.

Method 28 – Ammonium Acetate Leach

Summary The sample is agitated in a horizontal shaker for 2 hours with 20 mL of 1 M NH4OAc. After centrifuging and decanting the solution is analyzed by ICP-OES and ICP-MS.

Method 28 Elements and Reporting Limits

Al, Aluminum 0.01% 25%

As, Arsenic 0.01 ppm 1%

Au, Gold 0.005 ppm 10 ppm

B, Boron 2 ppm 0.1%

Ba, Barium 0.5 ppm 1%

Be, Beryllium 0.05 ppm 0.1%

Bi, Bismuth 0.005 ppm 0.1%

Ca, Calcium 10 ppm 25%

Cd, Cadmium 0.01 ppm 0.1%

Ce, Cerium 0.005 ppm 0.1%

Co,…