Source Emissions Testing Report

Round Mountain Gold Corporation

Mercury Emissions

Carbon Kiln & Refinery Furnace

Smoky Valley Mine

Round Mountain, Nevada

Report prepared for: Report prepared by:

Mr. Joshua Roderick

Round Mountain Gold Corporation

Smoky Valley Common Operation

1 Smoky Valley Mine Road Matt McGregor

Round Mountain, Nevada 89045 Technical Writer

Test Dates:

November 10th & 11th, 2008

APT Project: RMG8330
Table of Contents

1. Introduction ........................................................................................ 1

2. Methods........................................................................................... 2

3. Test Program Summary................................................................... 2

4. Test Method Details......................................................................... 3

5. Results......................................................................................... 4

Tables 

Table 1.1 : Testing Program Contact Personnel............................... 1

Table 3.1 : Sampling and Analytical Methods................................... 3

Table 5.1 : Test Results Summary, Refinery Furnace................... 5

Table 5.2 : Test Results Summary, Carbon Kiln........................... 6

Appendices

Testing Parameters..................................................................... Appendix 1

Field Data...................................................................................... Appendix 2 

Laboratory Data............................................................................. Appendix 3

Calibration Data............................................................................. Appendix 4

Schematics................................................................................... Appendix 5
APT Project RMG8330

Test Report – Smoky Valley Mine Mercury Emissions

page 1

1. Introduction

Air Pollution Testing, Inc. (APT) was contracted by Round Mountain Gold Corporation for 

source emissions test services conducted at the Smoky Valley Mine facility near Round 

Mountain, Nevada. 

The purpose of the emissions testing program was to quantify the stack gas velocity and 

concentrations and mass emission rates of oxygen (O2), carbon dioxide (CO2), moisture 

(H2O), total suspended particulate matter (PM) and mercury (Hg). Testing was conducted at 

the Carbon Kiln – Deep Bed Carbon Scrubber and Refinery Furnace – Deep Bed Carbon 

Scrubber exhaust stack locations.

The stack testing was conducted pursuant to the Nevada Mercury Control Program.

Contact personnel are provided in Table 1.1 below.

Round Mountain Gold Corporation : Smoky Valley Mine Mercury

Emissions Testing Program Contact Personnel

Name, Title Company, Address Phone, FAX, email

Mr. Rob Bamford,

Supervisor, Permitting Branch

NDEP - BAPC

901 S. Stewart Street, Suite 4001

Carson City, Nevada 89701

775-687-9495,

775-687-6396

Mr. Joshua Roderick,

Environmental Technician

Round Mountain Gold, Corp.

Smoky Valley Mine

No. 1 Smoky Valley Mine Road

Round Mountain, Nevada 89045

775-377-3280,

775-377-3224,

joshua.roderick@kinross.com

Mr. Greg Schoen,

Environmental Superintendent 

Round Mountain Gold, Corp.

Smoky Valley Mine

No. 1 Smoky Valley Mine Road

Round Mountain, Nevada 89045

775-377-3336,

775-377-3224,

greg.schoen@kinross.com

Mr. Craig Kormylo,

Director of Operations

Air Pollution Testing, Inc.

5530 Marshall Street

Arvada, Colorado 80002

303-420-5949 ext. 24,

303-420-5920,

ckormylo@airtest.net

Table 1.1: Emissions Testing Program Contact Personnel
APT Project RMG8330

Test Report – Smoky Valley Mine Mercury Emissions

page 2

2. Methods

APT tested in accordance with the following U.S. EPA source emissions test methods

referenced in 40 CFR Part 60, Appendix A.

• Method 1 – Sample and Velocity Traverses for Stationary Sources

• Method 3 – Gas Analysis for the Determination of Dry Molecular Weight

• Method 29 – Determination of Metals Emissions from Stationary Sources

3. Test Program Summary

The testing program provided all necessary equipment and labor for the determination of all 

emission parameters detailed in Table 3.1 on the following page. Integrated samples were

recovered on-site for shipment to the Test America laboratory as indicated below. Stack gas 

volumetric flow data were collected concurrently to calculate mass emission rates in units of 

pounds per hour (lb/hr). Various operational data were collected throughout the testing 

program and can be found at the back of Appendix 2. 

At both of the sources, triplicate test runs were conducted in which a minimum of 60 dscf were 

collected (or at least 2 hours in duration). All samples for off-site analysis were collected by 

APT personnel and delivered via overnight shipment under chain-of-custody for subsequent 

analysis at the Test America laboratory in West Sacremento, California. All on-site recovery of 

samples were conducted in an analytical trailer devoted specifically to sample recovery to 

minimize sample contamination risk.

In accordance with NDEP preference, a cyclonic flow check was performed prior to emissions 

testing. All QA/QC requirements detailed in the appropriate reference test methods were 

strictly followed. All field data were recorded on appropriate data sheets. All pre-test / posttest equipment calibration / preparation were conducted as required in the applicable 

reference test methods.
APT Project RMG8330

Test Report – Smoky Valley Mine Mercury Emissions

page 3

Round Mountain Gold Corporation : Smoky Valley Mine Mercury

Sampling and Analytical Methods

Parameter Sampling Method Analytical Method Laboratory

gas flow Methods 1, 29 draft gauge, thermocouple, pitot tube

O2 , CO2 Method 3 wet chemical (Orsat instrument)

H2O Method 29 gravimetric 

APT, on-site

PM Method 29 gravimetric 

Hg Method 29 CVAAS (Hg)

Test America, 

West Sacramento, CA

Table 3.1: Sampling and Analytical Methods Summary

4. Test Method Details

Mercury emissions at the unit exhausts were determined in accordance with EPA Method 29.

Each Hg sampling period consisted of extracting a gas sample from the applicable sampling 

location at an isokinetic flow rate for a period sufficient to collect a minimum sample volume of 

60 dscf or for a duration of no less than 120 minutes. The gas passed through a glass (or 

Teflon-coated stainless steel) nozzle, a heated Teflon probe liner, across a heated, tared 

quartz fiber filter, through a series of 6 chilled glass impingers, and through a calibrated dry 

gas meter.

At the start of Hg sampling, the first two impingers were filled with 100 ml of 10% hydrogen 

peroxide/5% nitric acid. The third and fourth impingers each contained 100 ml of 4% 

potassium permanganate/10% sulfuric acid. The fifth impinger was empty. The sixth impinger 

contained 250 grams of dried silica gel.

Following each sampling period, the filter, a series of acetone and dilute nitric acid rinses 

(separate amber bottles) of the probe and nozzle, and the contents of the impingers were

recovered for subsequent cold vapor atomic absorption spectroscopy (CVAAS) analysis. 

CVAAS was used for mercury (Hg) analysis.

An integrated sample of stack gas was collected during each run and analyzed using an Orsat 

instrument. The laboratory data were combined with concurrently collected gas flow data to 

calculate the metals (on an elemental basis) emissions in units of pounds per hour (lb/hr).
APT Project RMG8330 

Test Report – Smoky Valley Mine Mercury Emissions 

page 4 

As a QA/QC measure, a train blank and a reagent blank of the impinger solutions were 

analyzed concurrent with the emissions samples. 

5. Results

The results of the testing are presented in Tables 5.1 and 5.2. Any testing parameters not 

found in the tables may be found in Appendix 1 – Testing Parameters. 

°F – temperature, measured in degrees Fahrenheit (°F) 

dscfm – dry standard (68°F, 1 atmosphere) cubic feet per minute 

O2 (%vd) – oxygen concentration (dry volume percent) 

CO2 (%vd) – carbon dioxide concentration (dry volume percent) 

H2O (%vw) – duct gas water vapor content (wet volume percent) 

F 1⁄2 PM – the front half of the particulate train, including the acetone rinse and filter 

Hg – mercury 

gr/dscf – grains per dry standard (68°F, 1 atmosphere) cubic feet 

lb/hr – pounds per hour 

ug/dscm – micrograms per dry standard (68°F, 1 atmosphere) cubic meter 

gpm – gallons per minute 

∆P (“H2O) – pressure drop, in inches of water 
APT Project RMG8330 

Test Report – Smoky Valley Mine Mercury Emissions 

page 5 

Round Mountain Gold Corporation – Smoky Valley Mine Mercury 

Test Results Summary, Refinery Furnace (November 10th & 11th, 2008)

Run #1 Run #2 Run #3 Average 

Date 11/10 11/11 11/11 

Start Time 15:25 6:40 9:41 

Stop Time 17:28 8:43 11:44 

Sampling Time (minutes) 120.0 120.0 120.0 120.0 

Stack Temp. (°F) 133 120 126 126 

Stack Flow (dscfm) 2,053 1,743 1,726 1,840 

O2 (%vd) 19.0 19.0 19.0 19.0 

CO2 (%vd) 0.0 0.0 0.0 0.0 

H2O (%vw) 3.5 3.0 3.5 3.3 

% isokinetic 102.4 100.5 102.8 101.9 

Operational Data

Total Batch Weight (lbs) 185 191 168 

Batch Time (min) 120 145 150 138 

Process Material Hg Conc. (ppm) 0.068 0.078 0.098 0.081 

Dynamic Scrubber Flow (gpm) 15 15 15 15 

Dynamic Scrubber ∆P (“H2O) 2.60 2.65 2.65 2.63 

Carbon Bed Scrubber ∆P (“H2O) 6.0 6.7 6.8 6.5 

Emissions Data 

F 1⁄2 PM (lb/hr) 0.06 0.25 0.18 0.17 

F 1⁄2 PM (gr/dscf) 0.004 0.017 0.012 0.011 

Total Hg (ug/dscm) 1.39 19.80 19.72 13.64 

Total Hg (lb/hr) 1.07E-05 1.29E-04 1.27E-04 8.92E-05 

Table 5.1: Test Results Summary, Refinery Furnace 
APT Project RMG8330 

Test Report – Smoky Valley Mine Mercury Emissions 

page 6 

Round Mountain Gold Corporation – Smoky Valley Mine Mercury 

Test Results Summary, Carbon Kiln (November 11th, 2008)

Run #1 Run #2 Run #3 Average 

Start Time 12:58 15:23 18:13 

Stop Time 15:01 17:26 20:15 

Sampling Time (minutes) 120.0 120.0 120.0 120.0 

Stack Temp. (°F) 111 110 110 110 

Stack Flow (dscfm) 514 511 504 510 

O2 (%vd) 18.5 18.5 18.5 18.5 

CO2 (%vd) 1.5 1.5 1.5 1.5 

H2O (%vw) 11.1 10.8 10.8 10.9 

% isokinetic 90.3 93.2 96.2 93.3 

Operational Data 

Carbon Throughput (tons/hr) 0.42 0.42 0.42 0.42 

Propane Throughput (gal/hr) 15.25 15.25 15.25 15.25 

Process Material Hg Conc. (ppm) 5.52 5.60 4.58 5.23 

Dynamic Scrubber Flow (gpm) 15 15 15 15 

Dynamic Scrubber ∆P (“H2O) 4.5 4.5 4.5 4.5 

Carbon Bed Scrubber ∆P (“H2O) 3 3 3 3 

Emissions Data 

F 1⁄2 PM (lb/hr) 0.005 0.227 0.017 0.083 

F 1⁄2 PM (gr/dscf) 0.001 0.052 0.004 0.019 

Total Hg (ug/dscm) 6.86 7.68 4.26 6.27 

Total Hg (lb/hr) 1.32E-05 1.47E-05 8.05E-06 1.20E-05 

Table 5.2: Test Results Summary, Carbon Kiln 


Round Mountain Gold Corporation

Smoky Valley Mine

Round Mountain, Nevada

Refinery Furnace

11/10 & 11/11/2008

EPA Method 29 - Determination of Metals Emissions from Stationary Sources (Hg only)

Run # 1 2 3 Average

date 11/10 11/11 11/11

start time 15:25 6:40 9:41

stop time 17:28 8:43 11:44

sampling time (minutes) 120.0 120.0 120.0

DS stack diameter (inches) 8.3 8.3 8.3 8.3

√∆PAVG average (delta P)1⁄2

 (" H2O)1⁄2

1.689 1.407 1.406 1.501

CP pitot tube constant (unitless) 0.99 0.99 0.99 0.99

TS stack temp. (°F) 133 120 126 126

Pbar barometric pressure (mbar) 812 817 817 815

Pbar barometric pressure (" Hg) 23.98 24.13 24.13 24.08

Ps stack pressure (" H2O) 2.3 2.3 2.3 2.3

Yd meter box Yd

 (unitless) 0.995 0.995 0.995 0.995

Tm meter temp. (°F) 55 39 55 50

Vm sample volume (ft3

) 101.381 92.675 96.797 96.951

∆H orifice setting delta H (" H2O) 1.9 1.7 1.7 1.8

Vlc moisture (g) 64.9 52.1 61.3 59.4

O2%vd oxygen (%vd) 19.0 19.0 19.0 19.0

CO2%vd carbon dioxide (%vd) 0.0 0.0 0.0 0.0

inches nozzle diameter (inches) 0.150 0.160 0.160 0.157

Run # 1 2 3 Average

grams mass particulate front half (g) 0.00295 0.00200 0.00235 0.00243

grams mass particulate filter (g) 0.01685 0.08415 0.06065 0.05388

micrograms mass Hg (micrograms) (front half - μg) 0.69 2.3 1.0 1.33

micrograms mass Hg (micrograms) (HCl - μg) 0.12 0.13 0.37 0.21

micrograms mass Hg (micrograms) (KMnO4

 - μg) 1.9 6.6 2.4 3.63

micrograms mass Hg (micrograms) (HNO3

 / H2O2 - μg) 0.58 35.3 40.9 25.59

Run # 1 2 3 Average

Vmstd sample volume (dscf) 83.335 79.052 80.010 80.799

sample volume (dscm) 2.360 2.238 2.266

Vwstd moisture volume (dscf) 3.055 2.452 2.885 2.798

Bws measured moisture content (%/100) 0.035 0.030 0.035 0.033

saturated moisture content (%/100) 0.203 0.142 0.167 0.171

actual moisture content (%/100) 0.035 0.030 0.035 0.033

MD molecular weight (dry) 28.76 28.76 28.76 28.76

MA molecular weight (actual) 28.38 28.44 28.39 28.40

VS gas velocity (ft/sec) 133.0 109.1 109.7 117.3

FACFM gas flow (acfm) 2,962 2,431 2,444 2,612

FDSCFM gas flow (dscfm) 2,053 1,743 1,726 1,840

lb/hr gas flow (lb/hr) 9,398 7,950 7,897 8,415

% % isokinetic 102.4 100.5 102.8 101.9

Particulate Emissions

lb/hr F1⁄2 PM (lb/hr) 0.06 0.25 0.18 0.17

gr/dscf F1⁄2 PM (gr/dscf) 0.004 0.017 0.012 0.011

Exhaust Total Hg Emissions

μg/dscm Hg emissions (μg/dscm) 1.39 19.80 19.72 13.64

lb/hr Hg emissions (lb/hr) 1.07E-05 1.29E-04 1.27E-04 8.92E-05

Bold-face results represent a reporting limit (RL) elevated due to sample dilution, Bold and Underlined results are 

estimated results that are less than the RL. The RL was substituted.

Bold and italicized values represent an elevated RL. The RL was elevated due to matrix interference.

Field Reference Method Data

Laboratory Data

Reference Method Calculations

Round Mountain Gold Corporation

Smoky Valley Mine

Round Mountain, Nevada

Carbon Kiln

11/11/08

EPA Method 29 - Determination of Metals Emissions from Stationary Sources (Hg only)

Run # 1 2 3 Average

start time 12:58 15:23 18:13

stop time 15:01 17:26 20:15

sampling time (minutes) 120.0 120.0 120.0

DS stack diameter (inches) 8.3 8.3 8.3 8.3

√∆PAVG average (delta P)1⁄2

 (" H2O)1⁄2

0.446 0.441 0.435 0.441

CP pitot tube constant (unitless) 0.99 0.99 0.99 0.99

TS stack temp. (°F) 111 110 110 110

Pbar barometric pressure (mbar) 817 817 817 817

Pbar barometric pressure (" Hg) 24.13 24.13 24.13 24.13

Ps stack pressure (" H2O) 0.25 0.25 0.25 0.25

Yd meter box Yd

 (unitless) 0.990 0.990 0.990 0.990

Tm meter temp. (°F) 54 56 61 57

Vm sample volume (ft3

) 92.525 95.171 97.916 95.204

∆H orifice setting delta H (" H2O) 1.5 1.6 1.6 1.5

Vlc moisture (g) 352.4 242.9 242.8 279.4

O2%vd oxygen (%vd) 18.5 18.5 18.5 18.5

CO2%vd carbon dioxide (%vd) 1.5 1.5 1.5 1.5

inches nozzle diameter (inches) 0.305 0.305 0.305 0.305

Run # 1 2 3 Average

grams mass particulate front half (g) 0.00020 0.25495 0.01405 0.08973

grams mass particulate filter (g) 0.00485 0.00675 0.00650 0.00603

micrograms mass Hg (micrograms) (front half - μg) 8.6 8.7 6.9 8.07

micrograms mass Hg (micrograms) (HCl - μg) 0.29 0.49 0.10 0.29

micrograms mass Hg (micrograms) (KMnO4

 - μg) 1.6 1.5 1.4 1.50

micrograms mass Hg (micrograms) (HNO3

 / H2O2 - μg) 4.3 6.3 1.2 3.93

Run # 1 2 3 Average

Vmstd sample volume (dscf) 76.178 78.077 79.579 77.945

sample volume (dscm) 2.157 2.211 2.253

Vwstd moisture volume (dscf) 16.587 11.433 11.429 13.150

Bws measured moisture content (%/100) 0.179 0.128 0.126 0.144

saturated moisture content (%/100) 0.111 0.108 0.108 0.109

actual moisture content (%/100) 0.111 0.108 0.108 0.109

MD molecular weight (dry) 28.98 28.98 28.98 28.98

MA molecular weight (actual) 27.76 27.80 27.80 27.79

VS gas velocity (ft/sec) 34.8 34.4 34.0 34.4

FACFM gas flow (acfm) 775 766 756 766

FDSCFM gas flow (dscfm) 514 511 504 510

lb/hr gas flow (lb/hr) 2,499 2,476 2,445 2,473

% % isokinetic 90.3 93.2 96.2 93.3

Particulate Emissions

lb/hr F1⁄2 PM (lb/hr) 0.005 0.227 0.017 0.083

gr/dscf F1⁄2 PM (gr/dscf) 0.001 0.052 0.004 0.019

Exhaust Total Hg Emissions

μg/dscm Hg emissions (μg/dscm) 6.86 7.68 4.26 6.27

lb/hr Hg emissions (lb/hr) 1.32E-05 1.47E-05 8.05E-06 1.20E-05

Bold-face results represent a reporting limit (RL) elevated due to sample dilution, Bold and Underlined results are 

estimated results that are less than the RL. The RL was substituted.

Bold and italicized values represent an elevated RL. The RL was elevated due to matrix interference.

Field Reference Method Data

Laboratory Data

Reference Method Calculations