DAQ-2024-010431

Rio Tinto Kennecott Utah Copper,LLC
4700 Daybreak Parkway
South Jordan, Utah 84009
Tel: [phone]

Attn: Mr. Conner Kijowski

RE: Kennecott Utah Copper, Bingham Canyon Mine
DAQE-AN105710047-21
Quarterly Ambient Data Report – 1st Quarter 2024

Dear Mr. Bird,

In accordance with requirements in Approval Order (AO) DAQE-AN105710047-
21, Condition II.B.4.f, Kennecott Utah Copper LLC is hereby submitting the
Ambient Data Report for the first Quarter of 2024.

If you have any questions or concerns please contact me or Sean Daly at 801 -
204-2563.

Yours sincerely,

Brendan Murphy
General Manager – Minerals
Mr. Bryce Bird - Director
Department of Environmental Quality
Division of Air Quality
P.O Box 144820
Salt Lake City, Utah 84114-4820
Date
14 May 2024

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SUMMARY OF PM10 AND
METEOROLOGICAL DATA FROM
RIO TINTO KENNECOTT’S
COPPERTON AND HI-COUNTRY
MONITORING STATIONS
FIRST QUARTER 2024
Rio Tinto Kennecott

Prepared By:

TRINITY CONSULTANTS
4525 Wasatch Blvd.
Suite 200
Salt Lake City, Utah
801-272-3000

May 2024

Project 244501.0030

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TABLE OF CONTENTS
1.0 INTRODUCTION 1-1 
1.1 Monitoring Station Description ................................................................................. 1-1 
1.2 Data Acquisition ........................................................................................................ 1-4 
2.0 DATA SUMMARY 2-1 
2.1 Copperton C3 PM10 and Meteorological Data ........................................................... 2-1 
2.1.1 Copperton C3 PM10 ...................................................................................................... 2-1 
2.1.2 Copperton C3 Wind Speed and Horizontal Wind Direction ............................................... 2-3 
2.1.3 Temperature ............................................................................................................... 2-5 
2.2 Hi-Country PM10 and Meteorological Data ................................................................ 2-5 
2.2.1 Hi-Country PM10........................................................................................................... 2-6 
2.2.2 Wind Speed and Horizontal Wind Direction .................................................................... 2-7 
2.2.3 Temperature ............................................................................................................. 2-10 
2.3 Data Recovery......................................................................................................... 2-10 
3.0 QUALITY CONTROL AND QUALITY ASSURANCE 3-1 
3.1 Visual Inspection of Equipment ................................................................................ 3-1 
3.2 Equipment Calibration .............................................................................................. 3-1 
3.3 PM10 Flow Checks ..................................................................................................... 3-1 
3.4 Arithmetic and Geometric Mean ............................................................................... 3-3 
3.5 Statistics for PM10 Checks ......................................................................................... 3-3 
3.6 Quality Assurance Audits .......................................................................................... 3-4 
APPENDIX A: HOURLY WIND DATA FOR FIRST QUARTER 2024 A 
APPENDIX B: HOURLY TEMPERATURE DATA FOR FIRST QUARTER 2024 B 
APPENDIX C: EQUIPMENT CALIBRATIONS FOR FIRST QUARTER 2024 C 
APPENDIX D: PM10 MONTHLY FLOW CHECKS FOR FIRST QUARTER 2024 D 
APPENDIX E: PERFORMANCE AUDIT REPORT FIRST QUARTER 2024 E

List of Figures
Figure 1.1 Location of Rio Tinto Kennecott’s Copperton C3 and Hi-Country Monitoring Stations 1-2 
Figure 1.2 Photograph of Copperton C3 Monitoring Station 1-2 
Figure 1.3 Photograph of Hi-Country Monitoring Station 1-3 
Figure 2.1 Wind Rose for January 2024 – Copperton C3 2-3 
Figure 2.2 Wind Rose for February 2024 – Copperton C3 2-4 
Figure 2.3 Wind Rose for March 2024 – Copperton C3 2-4 
Figure 2.4 Wind Rose for First Quarter (January - March) 2024 – Copperton C3 2-5 
Figure 2.5 Wind Rose for January 2024 – Hi-Country 2-8 
Figure 2.6 Wind Rose for February 2024 - Hi-Country 2-8 
Figure 2.7 Wind Rose for March 2024 – Hi-Country 2-9 
Figure 2.8 Wind Rose for First Quarter (January - March) 2024 – Hi-Country 2-9 

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List of Tables
Table 1-1 Instrumentation at Rio Tinto Kennecott’s Copperton C3 and Hi-Country Monitoring Stations 1-4 
Table 2-1 PM10 Concentration Results for Copperton C3 Monitoring Station in Micrograms per Cubic Meter
First Quarter 2024 2-2 
Table 2-2 High and Second-High 24-Hour PM10 Concentrations – Copperton C3 2-2 
Table 2-3 Summary of Temperature in Degrees Fahrenheit (°F) for First Quarter 2024 – Copperton C3 2-5 
Table 2-4 PM10 Concentration Results for Hi-Country Monitoring Station in Micrograms per Cubic Meter First
Quarter 2024 2-6 
Table 2-5 High and Second-High 24-Hour PM10 Concentrations – Hi-Country 2-7 
Table 2-6 Summary of Temperature in Degrees Fahrenheit (°F) for First Quarter 2024 – Hi- Country 2-10 
Table 2-7 Data Recovery in Percent for Meteorological Parameters for First Quarter 2024 2-10 
Table 2-8 Data Recovery in Percent for PM10 for First Quarter 2024 2-10 
Table 3-1 First Quarter PM10 Monthly Flow Check Results 3-2 
Table 3-2 Arithmetic and Geometric Means – First Quarter 2024 3-3 
Table 3-3 First Quarter 2024 Bias Statistics for PM10 Samplers 3-4 
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1.0 INTRODUCTION
This first quarter 2024 data report, prepared for Rio Tinto Kennecott by Trinity Consultants (Trinity),
summarizes the ambient particulate concentration data less than 10 microns in size (PM10) and
meteorological data collected at the Copperton C3 and Hi-Country monitoring stations. Condition
II.B.4.a of Rio Tinto Kennecott’s Bingham Canyon Mine (BCM) Approval Order (AO) requires that two
ambient monitoring stations be operated to measure PM10 until a minimum of 234,000,000 tons per
year (TPY) of material moved from the mine has been achieved. The purpose of the monitoring is to
measure PM10 concentrations in the vicinity of the mine and to maintain compliance with the National
Ambient Air Quality Standards (NAAQS) for 24-hour PM10.
1.1 Monitoring Station Description
PM10 measurements are collected every three days for 24 hours, midnight to midnight, in accordance
with US Environmental Protection Agency’s (EPA’s) three-day sampling schedule at the Copperton C3
and Hi-Country monitoring stations. The Copperton C3 monitoring station is located near the town of
Copperton, Utah. The Hi-Country monitoring station is operated in the vicinity of one of the top five
highest modeled ground level PM10 concentrations.

A meteorological station is installed at the Copperton C3 PM10 station. This station collects continuous
measurements of wind speed, wind direction, temperature, relative humidity, and barometric
pressure. A 10-meter meteorological tower is also installed at the Hi-Country PM10 monitoring station
which collects continuous measurements of wind speed, wind direction, temperature, relative
humidity, and barometric pressure.

The latitude/longitude coordinates and elevations of the Copperton C3 and Hi-Country monitoring sites
are as follows:

Site Latitude
(decimal degrees)
Longitude
(decimal degrees)
Elevation
(feet)
Copperton C3 40.56265° -112.10257° 5,480
Hi-Country 40.50335° -112.10294° 6,003

Figure 1.1 presents a map showing the locations of Rio Tinto Kennecott’s Copperton and Hi-Country
monitoring stations relative to the mine. Photographs of the monitoring stations are presented in
Figures 1.2 and 1.3. The instrumentation that is installed at the Copperton and Hi-Country monitoring
sites is presented in Table 1-1.

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Figure 1.1 Location of Rio Tinto Kennecott’s Copperton C3 and Hi-Country Monitoring
Stations

Figure 1.2 Photograph of Copperton C3 Monitoring Station

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Figure 1.3 Photograph of Hi-Country Monitoring Station

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Table 1-1 Instrumentation at Rio Tinto Kennecott’s Copperton C3 and Hi-Country
Monitoring Stations
Parameter Equipment
Manufacturer
Model
Number Serial Number

Sample
ID
Copperton C3
PM10 Wedding & Associates High Volume Model 600 60058706319 A
PM10 Wedding & Associates High Volume Model 600 60058707319 B
PM10 Wedding & Associates High Volume Model 600 60058716319 C
PM10 Wedding & Associates High Volume Model 600 60058705319 D
PM10 Wedding & Associates High Volume Model 600 60058717319 E
Wind Speed RM Young 05305-AQ 146853 NA
Wind Direction RM Young 05305-AQ 146853 NA
Temperature E+E Elektronic EE181-L 164016000096C7 NA
Data Acquisition Campbell Scientific CR1000x 14370 NA
Hi-Country
PM10 Tisch Environmental Model TE-6070V P8017 A
PM10 Tisch Environmental Model TE-6070V P8018 B
PM10 Tisch Environmental Model TE-6070V P8019 C
PM10 Tisch Environmental Model TE-6070V P8020 D
PM10 Tisch Environmental Model TE-6070V P8021 E
PM10 Tisch Environmental Model TE-6070V P8022 F
PM10 Tisch Environmental Model TE-6070V P8023 G
PM10 Tisch Environmental Model TE-6070V P8024 H
Wind Speed Met One 020C Y4271 NA
Wind Direction Met One 010C W4849 NA
Temperature E+E Elektronic EE181-L 192916000065B5 NA
Data Acquisition Campbell Scientific CR1000x 14844 NA
1.2 Data Acquisition
Campbell Scientific CR1000x data acquisition systems (DAS’s) at each monitoring station are used
record differential pressure readings from each PM10 sampler's transducer as one-minute averages.
Meteorological data are stored in the data logger as five-minute and hourly averages computed from
secondly values.

PM10 filter samples are collected every three days in accordance with US EPA’s sampling schedule.
High volume quartz filters are later processed by Rio Tinto Kennecott’s environmental laboratory to
determine filter weight and PM10 concentrations.

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2.0 DATA SUMMARY
This section of the report summarizes the data results and data recovery for January 1 through March
31, 2024. Filter data as well as hourly meteorological data for the period are tabulated in the
appendices. These appendix tables display the meteorological hourly average of measurements
recorded in the hour "ending"; that is, the first hour of the day is labeled 01, meaning the hour
beginning at 00:00:01 and ending at 01:00:00 a.m. The second hour is labeled 02, meaning the values
collected from 01:00:01 a.m. to 02:00:00 a.m.
2.1 Copperton C3 PM10 and Meteorological Data

PM10 and meteorological data are collected at the Copperton C3 monitoring station. Summaries of
these data for the first quarter 2024 are presented below.
2.1.1 Copperton C3 PM10
Wedding & Associates High Volume Model 600 filter-based samplers are used to measure PM10 at the
Copperton C3 monitoring station. PM10 samples are exposed in accordance with EPA’s three-day
sampling schedule. The 8” x 10” quartz filters required for the samplers are obtained from Rio Tinto
Kennecott’s gravimetric laboratory.

Table 2-1 presents the PM10 concentration results, based on standard temperature and pressure (STP)
conditions, for the first quarter 2024 for the Copperton monitoring site. Table 2-2 presents the high
and second-high 24-hour PM10 concentrations for the first quarter at Copperton C3.
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Table 2-1 PM10 Concentration Results for Copperton C3 Monitoring Station in Micrograms per
Cubic Meter First Quarter 2024
Sampling
Date
STP
PM10 Conc.
(μg/m3)
Flow
(m3) Comment
01/01/2024 18.0 1441.44
01/04/2024 8.3 1441.44
01/07/2024 6.0 1434.24
01/10/2024 7.2 1432.8
01/13/2024 4.7 1427.04
01/16/2024 12.1 1458.72
01/19/2024 17.2 1427.04
01/22/2024 7.0 1419.84
01/25/2024 6.1 1434.24
01/28/2024 11.6 1442.88
01/31/2024 VOID – Filter Ran Twice
02/03/2024 5.4 1425.6
02/06/2024 7.6 1406.88
02/09/2024 6.5 1437.12
02/12/2024 18.3 1445.76
02/15/2024 VOID – Filter Ran Twice
02/18/2024 VOID – No Weight Provided by Lab
02/21/2024 4.2 1440
02/24/2024 10.3 1441.44
02/27/2024 4.3 1450.08
03/01/2024 62.0 1379.52
03/04/2024 3.6 1435.68
03/07/2024 5.9 1429.92
03/10/2024 7.7 1421.28
03/13/2024 VOID – Out of Criteria Flow Check VOID - Ou
03/16/2024 16.5 1402.56
03/19/2024 13.4 1408.32
03/22/2024 20.0 1408.32
03/25/2024 4.6 1427.04
03/28/2024 10.6 1419.84
03/31/2024 #DIV/0! VOID – Negative Weight from Lab
Table 2-2 High and Second-High 24-Hour PM10 Concentrations – Copperton C3
Number 24-hour Concentration
(μg/m3)
Date of Occurrence
1 62.0 March 1
2 20.0 March 22

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There were no ambient PM10 samples greater than 135 ug/m3 and no exceedances of the NAAQS during any
24-hour sampling period during the quarter; thus, no laboratory filter analyses were conducted.

Meteorological data records from the Copperton C3 meteorological monitoring site include wind speed and
horizontal wind direction measured at 10 meters, ambient temperature, and relative humidity at 10 meters,
and barometric pressure at 1.5 meters.
2.1.2 Copperton C3 Wind Speed and Horizontal Wind Direction
The most frequent (and predominant) winds during the first quarter at Copperton C3 were from the west
followed by the southeast sector. Reported wind directions represent the directions from which the wind is
blowing.

Wind speed records show there were 1.8 percent calm winds during the first quarter 2024. The percentage
of wind speeds that were not calm but were less than or equal to 10.8 meters per second (m/s) or 24.2 miles
per hour (mph) was 98.1 percent for the first quarter. There were 0.1 percent of wind records showing greater
than 10.8 m/s during the first quarter. The sector with the highest average wind speed was the southeast at
3.7 m/s. The maximum wind gust during the quarter was 27.1 m/s which occurred on March 2 at 06:00.

Figures 2.1 through 2.3 provide diagrams of the joint frequency of occurrence distributions (wind rose) of the
vector wind speed and wind direction by month for January through March 2024. Figure 2.4 presents the wind
rose for the first quarter 2024. Summary tables of hourly average wind direction and wind speed by month
for the first quarter are presented in Appendix A.
Figure 2.1 Wind Rose for January 2024 – Copperton C3

4%
8%
12%
16%
20%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott C3
January 2024
10-m Level
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Figure 2.2 Wind Rose for February 2024 – Copperton C3

Figure 2.3 Wind Rose for March 2024 – Copperton C3

4%
8%
12%
16%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott C3
February 2024
10-m Level
4%
8%
12%
16%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott C3
March 2024
10-m Level
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Figure 2.4 Wind Rose for First Quarter (January - March) 2024 – Copperton C3

2.1.3 Temperature
Ambient daily mean temperatures during the first quarter ranged from a low of 18.7F in January to a high of
52.2°F in March. The hourly minimum was 13.7F on January 16 at 02:00 and the hourly maximum was
59.2°F which occurred on March 20 at 17:00. First quarter data are summarized in Table 2-3. Hourly averages
of the temperature data by month for the first quarter are presented in Appendix B.
Table 2-3 Summary of Temperature in Degrees Fahrenheit (°F) for First Quarter 2024 –
Copperton C3
Month
Monthly
Mean
(˚F)
Maximum
Daily Mean
(˚F)
Minimum
Daily Mean
(˚F)
Maximum
Hour
(˚F)
Minimum
Hour
(˚F)
January 31.9 47.1 18.7 52.9 13.7
February 35.2 46.3 23.7 54.8 18.6
March 38.9 52.2 25.5 59.2 19.3
First Quarter 2024 35.3 52.2 18.7 59.2 13.7
2.2 Hi-Country PM10 and Meteorological Data
PM10 and meteorological data are collected at the Hi-Country monitoring station. Summaries of these data for
the first quarter 2024 are presented below.
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2.2.1 Hi-Country PM10
Tisch Environmental Model TE-6070V filter-based samplers are used to measure PM10 at the Hi-Country
monitoring station. PM10 samples are exposed in accordance with EPA’s three-day sampling schedule. The 8”
x 10” quartz filters required for the samplers are obtained from Rio Tinto Kennecott’s gravimetric laboratory.
Table 2-4 presents the PM10 concentration results, based on standard temperature and pressure (STP)
conditions, for the first quarter 2024 for the Hi-Country monitoring site. Table 2-5 presents the high and
second-high 24-hour PM10 concentrations for the first quarter at Hi-Country.

Table 2-4 PM10 Concentration Results for Hi-Country Monitoring Station in Micrograms per
Cubic Meter First Quarter 2024
Sampling
Date
STP
PM10 Conc.
(μg/m3)
Flow
(m3) Comment
01/01/2024 20.7 1408.32
01/04/2024 9.0 1409.76
01/07/2024 6.8 1412.64
01/10/2024 11.5 1392.48
01/13/2024 9.5 1398.24
01/16/2024 5.3 1422.72
01/19/2024 6.5 1401.12
01/22/2024 2.3 1370.88
01/25/2024 4.6 1402.56
01/28/2024 12.9 1405.44
01/31/2024 6.1 1386.72
02/03/2024 5.9 1380.96
02/06/2024 5.3 1359.36
02/09/2024 6.7 1411.20
02/12/2024 21.9 1415.52
02/15/2024 6.7 1382.40
02/18/2024 6.1 1398.24
02/21/2024 2.9 1391.04
02/24/2024 4.4 1408.32
02/27/2024 9.4 1401.12
03/01/2024 48.0 1352.16
03/04/2024 9.2 1412.64
03/07/2024 6.0 1399.68
03/10/2024 9.1 1366.56
03/13/2024 5.7 1406.88
03/16/2024 9.5 1379.52
03/19/2024 15.3 1383.84
03/22/2024 12.1 1355.04
03/25/2024 4.8 1376.64
03/28/2024 6.5 1389.60
03/31/2024 0.1 1382.40
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Table 2-5 High and Second-High 24-Hour PM10 Concentrations – Hi-Country
Number 24-hour Concentration
(μg/m3)
Date of Occurrence
1 48.0 March 1
2 21.9 February 12

There were no ambient PM10 samples greater than 135 ug/m3 and no exceedances of the NAAQS during any
24-hour sampling period during the quarter; thus, no laboratory filter analyses were conducted.

Meteorological data records from the Hi-Country meteorological monitoring site include wind speed and
horizontal wind direction measured at 10 meters, ambient temperature, and relative humidity at 10 meters,
and barometric pressure at 1.5 meters.
2.2.2 Wind Speed and Horizontal Wind Direction
The most frequent (and predominant) winds during the first quarter at the Hi-Country monitoring site were
from the south. The second most frequent winds were from the south-southwest sector. Reported wind
directions represent the directions from which the wind is blowing.

Wind speed records show there were 0.3 percent calm winds during the first quarter 2024 at the Hi-Country
site. The percentage of wind speeds that were not calm but were less than or equal to 10.8 m/s (24.2 mph)
was 96.9 percent. 2.8 percent of the winds were greater than 10.8 m/s (24.2 mph) during the first quarter.
The sector with the highest average wind speed was south at 6.7 m/s. The maximum wind gust during the
quarter was 33.9 m/s which occurred on March 2 at 04:00.

Figures 2.5 through 2.7 provide diagrams of the joint frequency of occurrence distributions (wind rose) of
wind speed and wind direction by month for January through March 2024 at the Hi-Country monitoring site.
Figure 2.8 presents the wind rose for the first quarter 2024. Summary tables of hourly average wind direction
and wind speed by month for the first quarter are presented in Appendix A.
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Figure 2.5 Wind Rose for January 2024 – Hi-Country

Figure 2.6 Wind Rose for February 2024 - Hi-Country

5%
10%
15%
20%
25%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott Hi-Country
January 2024
10-m Level
10%
20%
30%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott Hi-Country
February 2024
10-m Level
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Figure 2.7 Wind Rose for March 2024 – Hi-Country

Figure 2.8 Wind Rose for First Quarter (January - March) 2024 – Hi-Country

4%
8%
12%
16%
20%
N
E
S
W
N-E
S-ES-W
N-W
Rio Tinto Kennecott Hi-Country
March 2024
10-m Level
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2.2.3 Temperature
Ambient daily mean temperatures during the first quarter ranged from a low of 17.9F in January to a high of
52.0°F in March. The hourly minimum was 16.4F which occurred on January 8 at 20:00. The hourly maximum
was 56.7°F which occurred on March 20 at 17:00. First quarter data are summarized in Table 2-6. Hourly
averages of the temperature data by month for the first quarter are presented in Appendix B.
Table 2-6 Summary of Temperature in Degrees Fahrenheit (°F) for First Quarter 2024 – Hi-
Country
Month
Monthly
Mean
(˚F)
Maximum
Daily Mean
(˚F)
Minimum
Daily Mean
(˚F)
Maximum
Hour
(˚F)
Minimum
Hour
(˚F)
January 31.6 47.0 17.9 51.3 16.4
February 34.2 46.0 22.1 53.2 19.6
March 37.8 52.0 24.5 56.7 18.1
First Quarter 2024 34.5 52.0 17.9 56.7 16.4
2.3 Data Recovery
Data recoveries in percent possible for the first quarter are provided in Tables 2-7 and 2-8.
Table 2-7 Data Recovery in Percent for Meteorological Parameters for First Quarter 2024
Month

Jan.
(%)

Feb.
(%)

Mar.
(%)
1st Qtr.
2024
(%)

Jan.
(%)

Feb.
(%)

Mar.
(%)
1st Qtr.
2024
(%)
Parameter C3 Hi-Country
Wind Speed 99.6 100 89.0 96.2 99.3 94.5 96.2 96.7
Wind Direction 99.6 100 89.0 96.2 99.3 94.5 96.2 96.7
Temperature 99.6 100 100 99.9 99.7 100 100 99.9

Table 2-8 Data Recovery in Percent for PM10 for First Quarter 2024
Station

January
(%)

February
(%)

March
(%)
First Quarter
2024
(%)
Copperton C3 90.9 77.8 81.8 83.5
Hi-Country 100 100 100 100
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3.0 QUALITY CONTROL AND QUALITY ASSURANCE
The PM10 samples collected at the Rio Tinto Kennecott monitoring stations have been subjected to a series of
quality control procedures to document the validity of the data and increase the integrity of the data sets.
The quality control performed for these data is described in this section.
3.1 Visual Inspection of Equipment
Visual inspection of the samplers is performed when a site technician visits each site to perform filter
exchanges and to check the status of the PM10 monitoring equipment. Abnormal conditions are logged and
reported immediately to the program manager for corrective action.

All of the Copperton C3 samplers were changed out during the first quarter 2024. Sampler E failed an audit
in 3rd quarter 2023 and was removed from rotation. The motor and housing were replaced during 4th quarter
2023, and new wiring was completed in January 2024. Sampler E was calibrated and put back into service
on January 29, 2024. Sampler D was replaced with a new G-Factor unit on February 28, 2024. Samplers A,
B, and C were replaced with new G-Factor units on March 20, 2024.
3.2 Equipment Calibration
PM10 sampler calibrations are performed at installation, when audits indicate the need or when problems are
identified, and every three months. Meteorological sensors are calibrated every six months. Calibration
verifications were conducted on the PM10 samplers at Copperton C3 and Hi-Country on February 16, 2024.
Additionally, Copperton C3 Sampler E was calibrated on January 29; Sampler D was calibrated on February
28, and Samplers A, B, and C were calibrated on March 20, 2024. The meteorological sensors at Copperton
C3 were calibrated on January 3, 2024; the meteorological sensors at Hi-Country were calibrated on January
30, 2024. Copies of the field calibration data sheets are presented in Appendix C.
3.3 PM10 Flow Checks
Field quality control activities include flow rate, temperature, and pressure checks and collection of field
blanks. All PM10 sampler quality control checks and calibrations are performed using a certified flow transfer
standard. The flow provided by the sample pump is audited with an external flow rate transfer standard at
least every three months.

Monthly PM10 flow checks were conducted on the samplers at Copperton on January 29, February 16, February
28 (C3 Sampler D), March 15 (C3 Samplers D and E) and March 28 (C3 samplers A-C). At Hi-Country, the
samplers were calibrated on January 30, February 16, and March 15, 2024. The measured flow rates of the
PM10 samplers should not exceed ±7 percent of the transfer standard flow rate or within ±10 percent of the
designed flow rates for the high-volume samplers. The results of the monthly flow checks are presented in
Table 3-1 and in Appendix D

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants 3-2
Table 3-1 First Quarter PM10 Monthly Flow Check Results
Month Sampler ID Reference
Standard
(m3/min)
Sampler
Flow
(m3/min)
% Difference
(Transfer
Standard)

% Difference
(Design)
Copperton
January
A 1.070 1.0982 2.6 -3.4
B 1.074 1.0965 2.1 -2.6
C 1.084 1.0944 0.9 -1.7
D 1.080 1.0984 1.7 -2.2
E 1.080 1.0877 0.7 -2.4
February
A 1.079 1.0829 0.4 -1.5
B 1.084 1.0860 0.2 -0.6
C 1.103 1.0816 -1.9 0.5
D 1.101 1.0875 -1.2 0.4
E 1.094 1.0764 -1.6 3.8
March
A 1.078 1.0972 1.8 -2.5
B 1.078 1.0997 2.0 -2.3
C 1.088 1.0950 0.7 -1.3
D 1.135 1.1083 -2.4 1.9
E 1.100 1.0912 -0.8 -1.2
Hi-Country
January
A 1.112 1.106 -0.5 -0.3
B 1.106 1.097 -0.8 -0.9
C 1.112 1.101 -1.0 -0.2
D 1.102 1.103 0.1 -1.0
E 1.091 1.109 1.7 -2.1
F 1.098 1.090 -0.8 -1.9
G 1.104 1.105 0.1 -1.0
H 1.096 1.101 0.4 -1.6
February
A 1.110 1.097 -1.2 0.2
B 1.091 1.088 -0.3 -1.9
C 1.110 1.092 -1.6 -0.5
D 1.110 1.095 -1.4 -0.2
E 1.101 1.101 0.0 -1.0
F 1.120 1.082 -3.4 0.4
G 1.120 1.097 -2.0 0.3
H 1.101 1.100 -0.1 -1.8
March
A 1.104 1.106 0.1 -0.8
B 1.077 1.099 2.0 -3.3
C 1.117 1.101 -1.4 0.4
D 1.107 1.108 0.1 -0.6
E 1.080 1.112 3.0 -3.1
F 1.113 1.091 -3.5 1.4
G 1.121 1.106 -1.3 0.7
H 1.104 1.105 0.1 -0.9
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants 3-3
3.4 Arithmetic and Geometric Mean
The arithmetic and geometric mean were calculated using the following formulas,

1) Arithmetic mean - 𝑥̅ ൌ ଵ
௡ ∑𝑋𝑖௡௜ୀଵ
2) Geometric mean - 𝑋௚ തതതത ൌ ሺ𝑋ଵ ൈ 𝑋ଶ ൈ..𝑋௡ ሻ ଵ
௡

Table 3-2 contains the arithmetic and geometric means, in micrograms per cubic meter, by station. PM10
concentrations are corrected to standard temperature and pressure conditions. Invalidated filters were not
used in these calculations.
Table 3-2 Arithmetic and Geometric Means – First Quarter 2024
Station
Arithmetic
Mean
(STD)
Geometric
Mean
(STD)
Copperton 11.5 9.0
Hi-Country 9.4 6.8
3.5 Statistics for PM10 Checks
Calculations for the PM10 data quality assessment were made based 40 CFR 58 Appendix A. The percent
difference is calculated using the following formula:

d YX
X xi
ii
i
100

Where Yi = concentration indicated by the sampler and Xi = the known concentration.

The coefficient of variation upper bound is calculated using the following equation:

CV = ට௡ ൈ∑ௗ೔మି൫∑ௗభ೙೔సభ൯మ೙೔సభ
ଶ௡ሺ௡ିଵሻ ൈ ට ௡ିଵ
௫బ.భ,೙షభమ

Where: X2 0.1,n-1 is the 10th percentile of a chi-squared distribution with n-1 degrees of freedom.

The absolute volume bias upper bound is then calculated using the following equation:
|𝐴𝐵|ൌ𝐴𝐵൅𝑡଴.ଽହ,௡ିଵ
𝐴𝑆
√𝑛
Where: n is the number of flow rate audits being aggregated; t0.95,n-1 is the 95th quantile of a t-distribution
with n-1 degrees of freedom.

The quantity AB is the mean of the absolute values of the di's and is calculated using the following equation:
AB = ଵ
௡ ∑|𝑑௜ |௡௜ୀ଴

AS is the standard deviation of the absolute values if the di's and is calculated using the following equation:
𝐴𝑆 ൌ
ඨ𝑛 ൈ ∑|𝑑ଵ |ଶ െ ൫∑|𝑑௜ |௡௜ୀଵ ൯ଶ௡௜ୀଵ
𝑛ሺ𝑛 െ 1ሻ

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants 3-4
A summary of the precision, accuracy, and bias statistics for the collocated PM10 is presented in Table 3-3.

Table 3-3 First Quarter 2024 Bias Statistics for PM10 Samplers
Statistics Copperton Hi-Country
Mean Percent Difference 0.640 -0.422
AB 1.322 1.034
AS 0.670 0.936
Bias Estimate 1.65 ±1.36
3.6 Quality Assurance Audits
To comply with the monitoring requirements, a performance audit of PM10 samplers is conducted with 30 days
of installation and quarterly. The PM10 samplers at Copperton and Hi-Country were audited on March 8, 2024;
the meteorological sensors at each station were audited on November 1, 2023. A copy of the March 8, 2024
audit report is presented in Appendix E.
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants
APPENDIX A: HOURLY WIND DATA FOR FIRST QUARTER 2024

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 1
Wind Speed and Direction in mps for January, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 285/00.7 281/01.1 283/01.6 291/00.9 332/01.1 294/01.0 271/00.9 258/01.3 248/01.0 145/00.6 120/01.8 120/02.1 110/02.5
2 259/01.3 285/00.9 282/01.5 280/01.3 279/01.7 268/02.0 268/01.2 273/01.4 277/01.4 123/01.1 109/02.0 117/01.9 117/02.0
3 245/02.7 229/02.0 181/01.3 170/02.0 185/03.5 200/02.7 168/01.8 186/01.9 203/02.5 175/02.2 129/05.4 ------
4 183/00.8 293/00.6 060/00.7 118/00.8 023/00.7 329/02.1 058/01.2 135/00.8 146/00.6 130/00.4 032/01.3 021/01.6 318/02.5
5 012/01.4 140/00.8 251/00.5 251/00.4 197/00.3 241/00.6 272/00.3 276/00.3 129/01.5 122/01.3 113/01.2 117/01.5 109/01.1
6 193/02.7 215/02.1 243/01.5 259/01.3 277/01.5 271/02.0 266/03.7 261/02.7 262/02.3 185/01.5 131/04.1 133/05.7 125/06.2
7 113/05.8 121/04.6 136/03.7 133/02.8 152/00.9 341/01.1 033/00.6 337/01.4 354/02.8 004/03.5 004/03.6 356/03.8 003/03.0
8 352/04.6 006/03.3 359/03.8 352/04.4 347/04.9 353/04.1 350/04.2 351/02.8 350/02.9 017/02.6 040/02.1 115/01.8 096/02.0
9 269/02.4 256/02.2 262/02.7 251/01.7 229/01.0 137/03.0 129/04.5 134/01.4 125/04.3 132/03.4 148/03.8 133/05.4 131/06.4
10 302/06.5 302/05.4 305/03.4 302/03.1 250/02.9 274/01.9 256/01.5 193/02.7 136/02.6 119/06.0 147/06.0 144/05.1 116/02.5
11 310/03.3 288/04.9 280/04.5 325/01.7 326/02.4 317/02.4 313/01.9 326/02.6 278/04.1 064/00.8 118/01.7 284/02.8 138/01.7
12 058/01.2 270/02.8 208/02.8 233/03.5 074/03.4 091/02.9 067/02.9 109/03.7 317/03.6 280/03.8 117/03.5 276/04.8 274/04.6
13 150/01.5 335/01.6 038/01.9 002/02.5 028/01.6 167/00.5 154/01.2 266/01.5 206/01.4 147/01.4 168/01.6 138/03.4 148/05.8
14 064/02.5 089/02.0 127/01.4 139/01.8 019/02.1 296/08.4 046/03.0 358/03.2 044/02.3 080/02.0 045/01.7 061/00.6 254/00.7
15 261/01.0 137/00.8 088/01.9 116/02.0 115/01.4 057/00.8 123/00.9 345/01.6 150/02.1 040/02.5 021/03.9 011/03.7 005/04.5
16 287/01.1 281/01.7 297/01.1 279/01.1 277/01.4 277/01.1 278/01.1 278/01.0 288/01.2 115/01.0 137/00.9 200/00.9 146/00.9
17 152/03.2 148/04.4 160/03.3 166/02.8 229/01.4 149/02.2 138/05.1 145/02.4 124/02.5 012/00.9 129/02.8 017/01.4 064/01.0
18 348/01.6 216/00.6 209/01.3 272/01.6 291/01.7 297/01.5 291/01.8 164/01.0 296/01.5 270/01.3 143/00.7 204/01.4 114/01.4
19 270/02.8 265/03.5 262/02.7 264/02.7 272/02.6 270/02.5 217/01.5 267/01.8 235/01.6 126/01.1 192/00.5 124/01.5 077/01.3
20 272/01.3 124/01.8 135/02.0 146/02.8 145/03.0 127/04.6 131/01.8 036/01.7 275/01.2 014/00.9 217/02.4 176/04.4 143/04.0
21 233/01.3 241/01.2 125/01.9 070/02.4 298/01.4 146/03.4 191/01.6 162/01.4 223/01.7 191/02.1 126/04.3 126/04.5 120/04.2
22 210/01.5 314/01.0 301/01.3 237/01.2 235/02.0 243/02.2 261/01.8 208/01.5 212/01.5 179/03.1 212/02.6 245/02.0 176/02.4
23 265/01.0 229/01.4 287/01.2 309/01.0 256/00.6 273/01.1 190/01.5 262/01.0 257/00.5 196/00.7 111/01.1 126/01.2 126/01.7
24 302/00.5 267/00.4 300/00.4 261/00.3 149/00.7 162/00.5 236/01.0 310/01.1 206/00.5 153/00.9 149/00.9 126/02.1 125/02.6
25 293/00.9 268/01.3 243/02.0 237/01.5 156/01.8 153/01.6 199/01.0 158/01.1 162/02.0 141/01.7 145/01.1 123/01.4 111/01.2
26 337/02.8 357/03.3 012/01.5 336/02.2 294/03.1 008/02.1 007/01.9 327/02.0 110/00.8 149/01.6 142/00.9 219/00.8 108/01.5
27 266/02.4 284/01.2 267/01.6 309/00.7 293/00.6 302/00.8 294/00.9 002/00.7 276/00.7 190/00.6 112/02.6 137/01.5 145/01.7
28 297/00.8 334/00.7 296/01.1 286/01.5 288/01.4 328/01.1 317/01.6 291/01.7 212/00.8 124/00.6 132/01.6 128/01.6 127/01.6
29 283/01.1 282/01.3 318/01.0 280/01.0 262/00.9 294/00.6 281/01.3 284/01.2 064/00.6 179/00.9 136/01.4 127/02.0 128/02.0
30 261/02.1 269/03.1 261/02.0 281/01.6 278/01.5 278/01.8 265/02.1 264/01.6 248/01.5 128/00.9 126/01.5 111/01.9 113/02.3
31 264/02.1 249/02.5 270/01.7 259/02.4 254/02.0 181/02.6 193/01.7 185/02.4 145/04.8 156/05.1 156/04.9 136/06.8 137/07.3
MEAN 275/02.1 267/02.1 267/01.9 266/01.8 268/01.8 269/02.1 247/01.9 264/01.7 220/01.9 136/01.8 127/02.4 130/02.6 120/02.8
MAX 302/06.5 302/05.4 280/04.5 352/04.4 347/04.9 296/08.4 138/05.1 109/03.7 145/04.8 119/06.0 147/06.0 136/06.8 137/07.3
MIN 302/00.5 267/00.4 300/00.4 261/00.3 197/00.3 167/00.5 272/00.3 276/00.3 257/00.5 130/00.4 192/00.5 061/00.6 254/00.7
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 2
Wind Speed and Direction in mps for January, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 120/02.4 135/01.6 127/01.7 091/00.5 289/01.5 293/01.3 258/01.1 298/00.7 283/00.6 277/00.8 255/02.2 262/01.3 110/02.5 091/00.5
2 116/01.7 120/01.4 117/02.6 212/01.6 292/01.2 280/01.1 266/00.9 295/00.7 265/02.5 250/02.1 261/01.4 253/01.5 117/02.6 295/00.7
3 ---143/03.6 161/02.9 133/01.4 111/00.9 271/01.0 090/01.1 171/00.7 119/00.7 265/00.4 276/01.0 179/02.0 129/05.4 265/00.4
4 288/04.2 329/02.4 005/03.1 354/03.2 346/02.4 348/03.1 338/03.0 002/01.9 337/01.4 341/02.7 004/01.6 004/01.8 288/04.2 130/00.4
5 102/00.6 106/00.6 090/00.6 336/02.7 351/03.3 001/03.1 357/01.2 320/01.0 336/02.9 320/03.2 331/02.3 007/01.4 351/03.3 197/00.3
6 136/06.7 124/06.1 123/05.6 131/04.5 136/04.0 127/03.2 151/05.0 115/03.1 129/04.1 121/05.2 122/04.2 166/03.7 136/06.7 259/01.3
7 004/03.3 012/02.6 355/04.0 012/02.7 356/03.3 358/03.4 004/03.0 359/03.4 348/03.7 346/04.4 343/04.2 012/03.1 113/05.8 033/00.6
8 061/01.7 029/01.8 050/01.1 310/01.2 285/01.6 275/02.2 268/02.1 259/02.2 272/02.0 269/02.3 272/02.1 344/02.7 347/04.9 050/01.1
9 133/05.1 130/03.8 167/01.0 068/01.5 125/04.7 286/05.0 298/03.3 301/04.3 301/05.8 299/05.9 315/02.5 185/03.5 131/06.4 229/01.0
10 315/02.2 136/04.1 125/05.0 049/02.2 344/01.9 027/02.0 042/01.9 315/02.0 292/06.9 333/03.6 307/03.4 308/03.5 292/06.9 256/01.5
11 269/02.8 003/01.7 134/03.6 129/02.2 140/01.9 286/01.1 294/02.2 268/03.0 172/02.8 269/05.2 247/03.9 287/02.7 269/05.2 064/00.8
12 253/03.3 279/04.4 273/03.4 268/05.1 268/04.4 279/06.6 278/08.2 279/08.1 293/08.8 316/04.7 205/02.7 273/04.3 293/08.8 058/01.2
13 144/05.7 161/06.2 160/05.8 138/05.2 128/05.0 122/05.8 125/06.6 127/06.6 128/06.7 117/05.9 104/02.9 136/03.7 128/06.7 167/00.5
14 235/00.7 169/01.4 150/01.3 150/00.9 150/01.0 182/00.7 141/00.8 098/01.7 098/02.1 094/01.6 165/01.5 107/01.9 296/08.4 061/00.6
15 013/02.8 019/02.2 358/01.9 307/01.6 276/02.0 275/02.3 283/01.7 279/02.0 280/01.5 283/01.4 285/01.5 348/02.0 005/04.5 057/00.8
16 144/01.3 123/00.9 248/00.7 277/01.5 242/01.1 205/02.0 221/01.9 262/02.6 272/01.5 273/01.5 239/01.3 248/01.3 262/02.6 248/00.7
17 135/01.1 128/01.4 251/01.0 259/01.9 256/01.6 272/01.9 259/02.0 226/01.3 265/00.9 358/00.9 327/01.2 181/02.0 138/05.1 358/00.9
18 088/01.4 023/00.9 242/00.9 230/01.2 267/01.9 265/02.3 268/03.6 266/02.7 268/02.7 268/02.6 268/02.5 258/01.7 268/03.6 216/00.6
19 193/00.7 120/01.0 185/00.6 229/00.7 266/00.6 285/00.9 279/01.5 273/01.3 348/00.8 324/00.6 217/01.4 245/01.5 265/03.5 192/00.5
20 140/03.6 134/04.1 133/05.4 121/04.5 081/03.0 210/01.6 162/02.2 169/02.7 259/01.5 274/01.5 270/01.1 158/02.6 133/05.4 014/00.9
21 123/03.3 118/02.0 120/01.9 115/00.9 307/00.3 332/00.2 307/00.8 274/01.2 049/00.5 298/00.7 223/01.0 170/01.8 126/04.5 332/00.2
22 157/02.3 148/03.2 155/03.1 214/03.5 189/02.7 132/02.8 174/02.5 229/02.0 236/03.2 229/03.0 222/02.4 212/02.3 214/03.5 314/01.0
23 136/01.3 053/01.2 357/01.4 003/01.1 330/00.8 262/00.8 248/00.1 223/00.6 250/00.4 334/00.3 275/00.6 260/00.9 126/01.7 248/00.1
24 130/02.8 128/02.5 122/01.5 155/01.2 227/01.5 276/00.6 271/01.7 272/01.6 260/01.6 240/01.2 260/00.5 215/01.2 130/02.8 261/00.3
25 110/01.6 099/00.6 061/01.1 048/01.0 001/00.8 012/02.8 347/04.0 333/04.5 332/04.5 352/04.6 335/04.6 101/02.0 352/04.6 099/00.6
26 058/01.9 103/01.2 113/01.1 130/00.6 286/01.5 269/01.0 269/01.9 266/02.2 261/02.3 267/02.2 267/02.1 318/01.8 357/03.3 130/00.6
27 174/01.4 127/01.6 039/01.2 014/00.7 206/01.6 223/01.2 284/00.9 296/00.9 308/00.6 275/01.0 262/01.0 270/01.2 112/02.6 190/00.6
28 114/01.9 074/01.4 128/01.5 251/01.0 275/01.8 276/01.2 278/01.2 286/00.9 279/01.0 285/01.2 276/01.7 277/01.3 114/01.9 124/00.6
29 153/01.5 094/01.5 077/01.4 008/01.0 279/01.1 287/01.3 278/00.7 273/00.6 277/00.6 275/01.6 263/02.6 274/01.2 263/02.6 064/00.6
30 126/02.1 122/02.0 108/01.5 215/01.4 280/01.0 291/01.5 282/02.0 278/01.8 273/01.7 254/01.4 306/01.0 251/01.7 269/03.1 128/00.9
31 143/06.6 144/05.1 141/04.8 203/02.6 229/02.7 228/03.2 229/02.8 214/02.2 210/01.8 190/01.6 196/01.9 196/03.4 137/07.3 190/01.6
MEAN 132/02.6 109/02.4 121/02.4 160/02.0 272/02.0 277/02.2 273/02.3 272/02.3 279/02.5 288/02.4 268/02.1 238/02.2
MAX 136/06.7 161/06.2 160/05.8 138/05.2 128/05.0 279/06.6 278/08.2 279/08.1 293/08.8 299/05.9 335/04.6 293/08.8
MIN 102/00.6 106/00.6 090/00.6 091/00.5 307/00.3 332/00.2 248/00.1 223/00.6 250/00.4 334/00.3 260/00.5 248/00.1
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =741 DATA RECOVERY RATE = 99.6%
MONTHLY MEAN = 238/02.2 MAXIMUM WIND SPEED =08.8 AT 293 DEGREES DATE OF OCCURRENCE = 1/12 AT 2200
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 1
Wind Speed and Direction in mps for February, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 229/01.5 216/01.1 219/01.3 204/02.1 235/01.8 219/02.9 202/02.2 145/02.5 136/02.3 144/02.9 155/04.4 146/03.8 161/04.4
2 223/02.3 173/02.5 251/00.7 093/01.8 115/01.0 287/00.2 064/00.6 343/00.7 272/01.1 143/01.3 123/02.4 133/04.2 130/04.5
3 125/01.2 069/00.8 157/00.5 194/01.1 302/03.9 306/03.9 299/02.9 323/01.9 114/00.7 114/01.3 044/01.7 027/02.0 029/02.8
4 305/00.9 274/01.2 314/01.5 278/01.4 268/01.9 252/02.1 245/01.8 209/01.5 183/01.1 175/02.4 128/05.1 137/06.0 132/06.6
5 153/05.3 116/04.6 114/05.5 093/03.0 145/04.5 152/04.5 166/04.5 167/04.4 225/04.0 226/05.9 144/04.8 119/06.0 107/06.6
6 191/02.0 174/01.9 005/00.8 257/03.0 215/02.5 192/02.1 314/01.4 266/01.2 201/01.5 189/02.1 209/02.6 183/03.8 138/05.5
7 158/03.1 137/04.8 243/04.7 190/02.4 263/01.9 033/01.1 009/00.9 334/00.9 102/03.2 108/03.0 109/03.4 110/03.4 074/00.7
8 287/01.2 276/01.1 290/01.1 283/00.9 289/01.6 303/01.1 295/00.9 190/00.8 264/01.2 210/00.6 143/01.2 186/01.3 140/02.0
9 325/01.9 300/01.5 298/01.2 310/01.3 258/01.2 123/00.6 259/00.4 237/00.5 287/00.4 150/00.9 097/01.5 077/01.4 128/01.5
10 333/02.8 339/02.7 331/02.4 334/03.3 315/02.6 301/01.9 311/01.9 304/03.1 348/02.5 350/03.1 347/02.5 355/03.0 350/04.2
11 330/02.4 334/02.8 324/02.2 311/02.3 333/01.4 285/00.5 268/01.4 276/01.5 261/00.7 133/01.4 123/01.7 081/01.4 028/01.4
12 277/01.9 261/02.2 261/02.3 271/02.1 317/01.1 314/01.2 293/01.1 278/01.7 220/00.9 131/01.1 166/01.0 147/01.2 136/01.2
13 204/00.8 296/00.6 195/00.5 238/01.2 258/00.8 259/01.3 279/01.3 269/01.3 192/01.0 169/01.6 131/03.5 137/05.1 133/04.4
14 156/01.8 182/01.6 169/00.7 193/00.8 232/01.3 257/01.3 262/01.9 291/01.1 255/00.9 123/02.0 122/02.4 153/02.5 147/03.3
15 152/01.8 168/04.2 161/04.4 153/04.6 187/03.8 149/02.7 145/02.8 127/01.7 117/03.1 164/02.5 070/03.8 015/02.2 335/01.1
16 259/01.8 269/01.8 264/01.4 313/01.0 283/00.9 317/01.2 309/00.9 312/00.6 297/00.8 071/01.1 120/02.2 173/02.5 142/02.1
17 276/03.6 299/01.6 262/02.0 273/03.1 285/02.1 275/01.7 273/02.0 273/02.3 154/01.2 117/01.8 119/02.0 117/01.8 140/01.6
18 149/02.6 156/01.6 187/02.8 223/03.8 185/02.0 125/04.2 143/02.2 134/04.5 124/06.6 139/04.0 174/05.0 166/07.3 194/06.5
19 270/02.8 235/02.1 336/01.0 248/02.1 284/01.0 198/01.0 263/01.2 145/02.3 153/04.0 169/02.3 156/04.5 148/07.5 149/08.2
20 346/01.0 276/00.4 001/00.5 033/00.4 299/01.0 294/00.6 242/00.7 194/01.2 216/01.3 155/02.0 128/03.3 125/06.3 129/06.6
21 153/04.9 140/05.1 158/02.9 155/04.0 168/03.9 166/02.4 165/04.4 118/02.1 137/02.1 121/02.2 091/01.4 005/01.3 133/02.2
22 163/01.0 252/01.5 265/00.6 330/00.6 066/00.7 235/00.6 012/00.5 094/00.8 092/00.7 130/01.0 122/01.5 201/01.9 288/02.3
23 273/02.5 272/02.4 269/02.5 271/03.3 260/02.3 258/02.6 265/01.9 260/01.5 194/01.7 118/02.0 116/02.5 132/01.9 128/02.5
24 259/02.9 265/03.0 271/03.3 258/03.1 269/03.5 278/01.1 251/02.1 262/01.9 110/01.0 120/02.6 121/04.5 127/05.1 122/03.8
25 267/02.2 249/01.3 255/01.3 287/01.1 260/01.1 316/00.9 282/01.2 298/01.1 259/00.5 153/02.7 129/05.7 138/05.4 160/05.1
26 122/03.7 345/01.5 251/04.5 255/04.8 263/04.1 245/04.1 249/04.6 241/03.6 078/03.0 136/03.6 155/07.1 168/05.1 201/02.9
27 316/04.0 003/03.1 331/03.1 303/04.2 307/04.1 302/04.3 301/04.4 296/06.7 299/06.1 315/05.8 311/05.7 306/04.6 308/05.5
28 259/02.3 265/02.6 262/02.2 264/01.8 273/01.7 255/01.7 252/02.4 205/00.6 101/01.7 107/02.4 121/03.5 117/04.2 112/03.6
29 249/01.6 135/01.3 143/03.2 237/01.5 172/01.5 197/01.2 200/01.6 153/02.3 200/02.6 122/06.9 140/08.2 132/08.9 155/06.5
MEAN 239/02.3 249/02.2 258/02.1 259/02.3 260/02.1 257/01.9 266/01.9 244/01.9 186/02.0 140/02.5 126/03.4 131/03.8 132/03.8
MAX 153/05.3 140/05.1 114/05.5 255/04.8 145/04.5 152/04.5 249/04.6 296/06.7 124/06.6 122/06.9 140/08.2 132/08.9 149/08.2
MIN 204/00.8 276/00.4 001/00.5 033/00.4 066/00.7 287/00.2 259/00.4 237/00.5 287/00.4 210/00.6 166/01.0 147/01.2 074/00.7
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 2
Wind Speed and Direction in mps for February, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 158/03.6 142/04.9 153/04.1 153/02.5 203/02.2 183/01.7 215/02.0 228/02.9 215/01.0 216/02.3 202/01.6 187/02.6 142/04.9 215/01.0
2 133/04.6 127/04.2 116/03.0 030/01.6 009/00.7 047/00.9 119/01.0 098/01.3 321/01.6 125/01.8 142/01.0 115/01.9 133/04.6 287/00.2
3 014/03.6 012/03.9 311/03.2 271/02.2 117/00.8 209/00.7 277/01.9 272/02.1 262/01.7 126/01.0 189/01.3 330/02.0 306/03.9 157/00.5
4 141/06.7 139/06.1 135/05.5 140/04.7 134/03.1 196/01.2 152/02.1 158/01.4 152/03.3 149/03.9 152/05.4 177/03.2 141/06.7 305/00.9
5 130/05.7 128/06.0 123/06.1 132/04.4 143/04.1 136/04.2 136/02.9 151/02.9 172/02.0 217/03.1 205/02.1 148/04.5 107/06.6 172/02.0
6 146/04.7 164/03.1 221/03.9 232/05.4 228/04.2 235/03.0 189/03.2 176/01.1 333/00.9 122/01.3 352/01.7 206/02.6 138/05.5 005/00.8
7 108/00.8 114/01.2 117/01.2 111/02.0 101/01.1 172/00.2 127/00.8 047/00.8 264/01.3 274/01.5 265/01.4 119/01.9 137/04.8 172/00.2
8 160/02.4 148/02.3 156/01.3 297/01.7 330/01.9 339/02.7 338/02.7 274/00.5 294/01.0 313/01.6 317/00.9 271/01.4 338/02.7 274/00.5
9 102/01.6 009/01.1 265/00.9 287/01.4 291/01.2 297/00.9 314/01.6 294/01.5 271/01.4 309/01.3 332/01.8 295/01.2 325/01.9 259/00.4
10 348/04.9 353/04.3 331/04.2 324/03.4 321/03.5 315/03.6 322/02.6 333/02.6 332/02.5 342/02.9 341/02.9 333/03.1 348/04.9 301/01.9
11 010/01.3 013/01.3 022/01.7 003/00.8 266/01.2 279/01.1 213/01.4 283/01.1 278/01.4 278/01.6 269/02.5 310/01.5 334/02.8 285/00.5
12 131/01.5 108/02.2 068/01.2 113/01.2 270/02.0 271/02.3 265/02.3 267/02.3 261/01.9 268/02.1 259/02.6 248/01.7 259/02.6 220/00.9
13 121/04.5 111/03.9 130/02.8 358/01.3 267/00.9 267/01.0 227/00.9 275/01.0 342/01.5 132/00.8 171/00.8 211/01.8 137/05.1 195/00.5
14 127/03.3 137/05.1 159/04.4 143/04.5 152/03.9 175/03.0 133/04.0 145/04.3 142/04.0 142/04.1 133/01.9 164/02.7 137/05.1 169/00.7
15 141/01.0 125/01.1 151/01.8 067/01.3 056/00.7 277/01.1 270/02.0 275/01.9 266/02.3 274/02.0 263/02.1 159/02.3 153/04.6 056/00.7
16 142/03.5 100/02.4 008/01.5 349/01.4 011/02.6 336/02.3 356/02.1 332/02.6 316/03.0 354/02.9 323/03.5 325/01.9 142/03.5 312/00.6
17 142/05.1 142/03.7 138/03.8 155/03.4 205/02.0 232/02.6 238/03.7 220/03.1 282/02.1 138/01.2 153/02.3 204/02.5 142/05.1 154/01.2
18 282/03.2 012/02.0 083/01.7 048/00.9 013/01.2 258/01.1 273/02.2 271/02.6 273/03.9 268/02.4 261/01.3 187/03.1 166/07.3 048/00.9
19 151/07.5 159/06.8 136/07.8 147/05.9 186/03.6 360/02.8 174/02.9 347/02.1 142/02.2 055/00.8 248/00.8 182/03.5 149/08.2 055/00.8
20 150/05.5 155/03.8 152/03.4 204/01.4 149/01.8 126/02.9 195/01.7 131/02.1 132/03.3 152/04.5 146/04.5 163/02.5 129/06.6 276/00.4
21 309/03.4 347/03.4 326/02.5 321/02.3 011/02.2 104/01.1 144/01.0 168/01.1 246/01.2 357/01.9 340/01.3 128/02.5 140/05.1 144/01.0
22 110/02.2 055/02.3 296/02.1 271/01.6 292/01.0 284/01.3 271/01.9 265/02.7 265/04.1 263/02.5 269/02.0 265/01.6 265/04.1 012/00.5
23 114/01.6 031/01.8 062/01.5 064/01.4 008/01.3 295/01.6 266/02.6 265/02.4 261/01.7 259/02.3 253/02.5 257/02.1 271/03.3 008/01.3
24 112/03.2 104/03.0 098/01.9 105/01.6 233/01.4 268/02.1 256/02.8 265/02.8 251/02.5 247/02.1 247/02.6 224/02.7 127/05.1 110/01.0
25 139/06.3 150/05.3 169/04.1 227/03.6 241/02.0 278/02.4 248/02.8 205/03.2 213/03.6 202/02.5 121/02.1 222/02.8 139/06.3 259/00.5
26 225/05.6 230/05.0 248/06.7 209/04.0 210/03.9 224/06.0 241/05.1 299/03.3 327/05.6 321/06.0 028/02.5 236/04.4 155/07.1 345/01.5
27 314/06.1 317/03.6 315/03.3 289/01.9 337/02.7 335/01.6 273/01.0 287/01.5 235/01.6 269/01.4 266/02.0 304/03.7 296/06.7 273/01.0
28 111/02.8 101/02.3 106/02.5 123/02.2 190/01.2 287/01.4 263/02.0 248/02.6 249/03.3 258/03.0 264/02.7 215/02.4 117/04.2 205/00.6
29 146/07.5 167/04.3 170/05.0 160/03.6 222/03.5 228/02.7 230/03.7 196/04.3 184/05.3 158/07.8 143/05.9 175/04.2 132/08.9 197/01.2
MEAN 130/03.9 109/03.5 129/03.2 142/02.5 245/02.1 260/02.1 235/02.3 251/02.2 259/02.4 240/02.5 243/02.3 213/02.6
MAX 146/07.5 159/06.8 136/07.8 147/05.9 228/04.2 224/06.0 241/05.1 196/04.3 327/05.6 158/07.8 143/05.9 132/08.9
MIN 108/00.8 125/01.1 265/00.9 003/00.8 009/00.7 172/00.2 127/00.8 274/00.5 333/00.9 055/00.8 171/00.8 287/00.2
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =696 DATA RECOVERY RATE = 100.0%
MONTHLY MEAN = 213/02.6 MAXIMUM WIND SPEED =08.9 AT 132 DEGREES DATE OF OCCURRENCE = 2/29 AT 1200
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 1
Wind Speed and Direction in mps for March, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 206/06.7 191/04.7 177/06.3 157/07.3 155/06.5 147/07.3 138/09.1 138/08.1 138/08.9 134/10.1 134/10.0 130/10.4 195/06.4
2 210/09.7 208/10.5 214/07.8 213/09.6 212/11.9 212/12.3 213/11.4 219/10.3 214/08.9 209/08.7 215/10.3 206/07.3 210/07.8
3 259/02.6 239/03.5 179/02.1 131/03.3 158/03.8 136/03.4 119/03.6 119/01.3 269/01.5 285/03.5 278/08.0 283/07.2 269/06.3
4 161/00.8 165/02.5 126/02.4 191/01.2 115/02.1 134/03.2 150/03.5 218/01.1 122/00.9 117/02.5 109/01.5 338/02.2 294/02.1
5 265/01.7 264/01.1 148/01.3 206/01.7 203/02.0 181/01.9 160/01.6 140/04.6 114/08.2 113/08.1 116/08.1 130/06.8 161/06.6
6 182/03.9 164/04.0 150/02.9 126/02.3 287/01.3 003/01.1 346/01.6 332/01.3 169/01.1 125/02.9 128/02.6 133/03.1 040/01.7
7 259/02.5 146/02.3 169/02.2 261/00.4 301/00.3 117/00.8 226/00.5 307/00.3 044/00.8 013/01.1 013/02.5 013/02.6 025/03.3
8 130/01.9 123/01.9 140/01.1 347/01.2 250/00.8 150/02.6 176/01.5 152/00.5 107/01.3 044/01.0 113/01.7 042/03.1 044/03.6
9 269/01.7 261/01.8 266/02.1 264/01.5 252/01.5 251/00.7 287/00.7 306/00.5 112/01.6 121/03.6 123/05.2 134/06.5 131/06.1
10 289/01.0 205/00.8 103/02.1 147/02.7 221/02.0 274/01.3 229/01.5 195/01.9 145/04.6 137/07.1 132/09.0 139/08.5 147/07.3
11 142/04.0 145/04.3 134/05.1 135/04.9 161/03.2 170/02.7 159/03.4 179/03.4 149/04.4 168/04.3 216/04.1 232/04.5 252/02.9
12 267/02.1 260/02.1 341/01.2 120/01.9 127/01.7 266/02.2 209/02.0 249/02.0 149/01.7 130/03.4 156/04.1 159/03.1 157/02.7
13 ---352/01.2 327/02.6 004/01.5 338/02.5 349/01.3 354/02.0 346/02.5 338/02.2 359/03.2 006/02.7 017/02.4 337/04.2
14 314/02.8 341/02.7 322/03.1 332/02.3 339/02.5 342/03.2 359/02.8 347/02.9 336/04.2 343/04.4 356/03.7 353/03.5 010/03.0
15 318/02.6 322/03.6 326/04.1 321/04.3 332/04.4 328/04.3 319/04.2 335/05.6 343/06.7 350/06.2 352/05.6 001/05.1 005/04.1
16 293/02.2 308/02.2 318/02.5 275/02.6 337/01.8 224/01.5 338/03.3 347/03.7 002/03.6 029/02.4 017/03.5 010/03.4 002/03.0
17 292/01.7 268/01.8 284/01.5 310/02.0 326/03.6 322/04.1 329/04.1 329/03.6 358/03.5 355/03.8 040/02.9 042/02.1 075/01.5
18 290/02.3 302/01.5 281/02.3 248/01.1 274/02.0 275/02.5 280/01.8 279/00.7 129/01.8 108/02.2 119/03.0 106/03.5 085/02.7
19 271/03.4 265/03.4 272/03.7 269/03.5 272/02.4 269/03.0 264/03.5 247/02.5 121/01.5 105/02.2 112/02.1 094/02.2 091/01.9
20 259/04.0 262/05.2 259/04.2 259/04.8 256/03.7 247/03.5 262/05.3 128/01.4 106/01.2 114/03.2 119/04.7 100/03.4 079/02.2
21 266/04.2 262/04.2 256/03.2 261/04.4 265/04.6 263/04.6 269/03.8 254/05.6 225/02.0 128/03.0 319/03.1 160/02.8 239/02.6
22 260/04.4 262/03.1 272/02.4 257/03.4 257/03.0 258/03.1 277/03.8 280/01.0 124/03.6 131/05.7 131/06.4 124/06.9 135/07.1
23 213/03.6 166/03.9 278/01.6 311/01.1 195/03.8 196/02.9 218/02.1 166/01.9 155/05.9 153/07.6 152/08.5 161/08.2 189/06.3
24 209/01.4 014/00.4 285/01.0 028/01.5 163/01.4 120/01.2 074/01.0 003/02.0 025/01.8 070/01.3 007/02.9 011/01.9 003/02.8
25 358/02.4 355/02.2 286/01.1 024/01.0 311/01.3 332/02.2 299/02.5 293/02.6 289/01.5 335/01.6 306/00.8 174/01.4 124/01.5
26 259/01.9 339/01.4 317/01.4 290/01.4 300/03.6 301/04.1 315/02.5 318/02.3 301/02.4 289/03.0 302/04.4 306/03.7 336/03.1
27 330/02.4 354/01.6 279/01.1 314/01.5 283/01.2 263/01.8 242/01.8 216/00.6 122/03.4 125/04.6 133/05.9 137/05.9 144/05.8
28 190/03.7 136/04.3 137/03.9 202/04.5 226/05.0 229/03.8 217/04.0 211/04.4 199/04.8 152/04.9 157/06.5 161/06.5 107/04.6
29 ---------------------------------------
30 ---------------------------------------
31 ---------------------------------------
MEAN 255/03.0 256/02.9 254/02.7 262/02.8 255/03.0 246/03.1 255/03.2 261/02.8 125/03.4 101/04.1 104/04.8 106/04.6 093/04.0
MAX 210/09.7 208/10.5 214/07.8 213/09.6 212/11.9 212/12.3 213/11.4 219/10.3 138/08.9 134/10.1 215/10.3 130/10.4 210/07.8
MIN 161/00.8 014/00.4 285/01.0 261/00.4 301/00.3 251/00.7 226/00.5 307/00.3 044/00.8 044/01.0 306/00.8 174/01.4 124/01.5
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3 Page 2
Wind Speed and Direction in mps for March, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 208/06.2 192/04.6 203/05.8 210/05.3 200/05.2 216/07.9 216/08.3 218/09.3 214/08.4 219/10.1 213/09.8 182/07.6 130/10.4 192/04.6
2 274/09.6 307/05.4 005/03.6 349/04.4 336/03.2 003/01.2 302/01.3 230/01.8 262/02.8 271/03.2 266/02.2 244/06.9 212/12.3 003/01.2
3 220/02.3 153/03.6 301/03.3 283/03.1 290/03.2 274/01.9 348/01.0 308/01.4 289/01.2 307/00.8 273/01.6 258/03.1 278/08.0 307/00.8
4 278/03.8 283/02.7 321/02.0 010/02.1 023/01.6 310/00.9 284/01.6 267/01.4 278/01.5 266/01.9 254/01.2 235/01.9 278/03.8 161/00.8
5 160/05.6 156/04.1 159/04.4 151/04.9 143/03.9 134/03.2 135/04.8 144/03.6 191/04.2 204/02.7 207/03.2 162/04.1 114/08.2 264/01.1
6 099/01.8 259/02.4 282/01.2 221/00.7 273/00.8 307/01.2 283/01.5 269/02.4 268/01.8 298/01.1 279/02.0 251/01.9 164/04.0 221/00.7
7 015/03.7 013/03.8 010/03.9 359/03.9 340/03.8 348/02.8 322/03.6 340/04.1 344/04.4 298/04.8 202/04.1 342/02.6 298/04.8 301/00.3
8 033/03.8 019/03.9 006/04.4 352/04.5 018/02.6 345/02.3 335/01.6 302/01.3 287/00.9 272/01.4 252/01.8 031/02.1 352/04.5 152/00.5
9 119/04.2 131/04.8 139/05.6 137/05.5 138/03.2 123/02.1 142/02.6 138/02.7 176/03.0 196/03.3 197/02.0 171/03.0 134/06.5 306/00.5
10 135/07.4 143/07.6 152/06.2 166/05.4 173/03.8 188/01.9 180/01.6 184/01.8 166/03.2 171/04.0 149/03.7 169/04.0 132/09.0 205/00.8
11 242/05.8 281/05.2 274/08.0 046/04.1 121/01.6 282/01.6 255/01.6 263/02.2 269/03.3 269/03.2 261/02.6 206/03.8 274/08.0 121/01.6
12 136/03.0 138/01.9 144/02.3 137/02.6 102/02.4 316/02.4 133/01.6 012/00.5 127/00.6 011/00.9 ---151/02.1 156/04.1 012/00.5
13 354/03.6 337/03.9 328/02.9 334/03.0 007/02.5 319/02.7 291/02.9 303/02.4 304/02.3 304/02.4 314/03.3 338/02.6 337/04.2 352/01.2
14 044/03.4 030/03.2 333/04.3 338/04.3 360/03.1 336/03.2 313/03.0 310/02.8 315/02.5 331/02.6 313/02.4 341/03.2 343/04.4 332/02.3
15 002/03.8 012/03.3 004/03.1 353/03.3 353/03.4 339/02.3 308/01.5 318/01.5 284/01.8 269/03.5 306/02.4 334/03.8 343/06.7 308/01.5
16 008/02.9 024/02.5 006/02.7 349/03.9 023/02.5 331/02.6 317/02.7 322/03.0 317/03.1 319/02.9 324/03.2 339/02.8 349/03.9 224/01.5
17 075/02.0 022/02.6 354/03.3 353/03.6 335/03.4 311/02.8 313/02.3 324/02.6 307/02.6 295/01.9 281/01.9 334/02.7 329/04.1 075/01.5
18 076/02.0 041/02.5 026/02.9 020/02.4 335/02.3 306/01.0 281/02.0 269/03.2 275/03.5 273/02.4 272/04.3 302/02.3 272/04.3 279/00.7
19 070/02.4 032/02.5 027/02.3 025/02.5 019/02.3 310/01.8 301/01.6 268/02.3 268/02.6 260/03.6 264/03.6 296/02.6 272/03.7 121/01.5
20 176/02.9 258/05.6 296/04.1 356/03.0 010/02.3 314/01.8 271/02.2 260/02.9 266/03.6 261/03.7 259/03.5 258/03.4 258/05.6 106/01.2
21 271/02.1 055/02.4 061/02.3 065/02.1 084/01.8 334/02.8 274/01.6 267/02.6 263/02.1 269/02.8 264/03.4 266/03.1 254/05.6 274/01.6
22 136/07.3 159/04.5 148/02.5 115/01.4 201/02.2 228/02.7 220/02.4 214/03.1 218/04.9 243/05.3 295/01.3 210/03.8 136/07.3 280/01.0
23 207/06.4 191/05.8 148/04.2 153/03.5 136/01.0 340/04.0 300/06.7 020/02.0 132/01.6 135/00.9 179/00.9 179/03.9 152/08.5 179/00.9
24 010/04.1 014/03.8 348/04.3 023/02.8 018/01.8 334/01.4 304/00.5 113/01.1 324/03.2 355/02.0 354/02.8 012/02.0 348/04.3 014/00.4
25 133/01.6 010/01.6 165/02.5 215/02.3 252/01.1 270/02.1 234/01.1 284/02.0 073/01.0 293/01.4 289/01.2 298/01.7 293/02.6 306/00.8
26 327/04.3 339/03.5 313/02.6 327/03.0 010/03.2 276/03.7 284/05.9 287/05.0 296/04.7 300/04.1 293/04.3 307/03.3 284/05.9 339/01.4
27 135/06.3 130/06.3 133/05.6 124/07.5 131/05.2 138/03.5 123/03.1 105/02.4 117/02.9 155/04.1 163/02.8 147/03.7 124/07.5 216/00.6
28 349/04.1 341/02.5 021/02.4 ---------------------------157/06.5 021/02.4
29 ------------------------------------------
30 ------------------------------------------
31 ------------------------------------------
MEAN 087/04.2 022/03.8 360/03.7 018/03.5 020/02.7 309/02.5 280/02.6 280/02.6 268/02.9 273/03.0 262/02.9 273/03.3
MAX 274/09.6 143/07.6 274/08.0 124/07.5 131/05.2 216/07.9 216/08.3 218/09.3 214/08.4 219/10.1 213/09.8 212/12.3
MIN 133/01.6 010/01.6 282/01.2 221/00.7 273/00.8 310/00.9 304/00.5 012/00.5 127/00.6 307/00.8 179/00.9 301/00.3
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =662 DATA RECOVERY RATE = 89.0%
MONTHLY MEAN = 273/03.3 MAXIMUM WIND SPEED =12.3 AT 212 DEGREES DATE OF OCCURRENCE = 3/2 AT 600
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
Joint Frequency Distribution for January, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 0.9 1.8 3.0 0.0 0.0 0.0 5.7 2.9
NNE 11.25 - 33.75 1.3 1.5 0.1 0.0 0.0 0.0 3.0 1.8
NE 33.75 - 56.25 0.5 1.2 0.0 0.0 0.0 0.0 1.8 1.8
ENE 56.25 - 78.75 1.8 0.7 0.1 0.0 0.0 0.0 2.6 1.5
E 78.75 - 101.25 0.7 1.3 0.0 0.0 0.0 0.0 2.0 1.7
ESE 101.25 - 123.75 3.5 3.1 1.1 0.8 0.0 0.0 8.5 2.2
SE 123.75 - 146.25 3.9 4.3 3.8 2.3 0.0 0.0 14.3 3.0
SSE 146.25 - 168.75 2.2 1.9 1.3 0.5 0.0 0.0 5.9 2.5
S 168.75 - 191.25 1.5 1.8 0.4 0.0 0.0 0.0 3.6 1.9
SSW 191.25 - 213.75 1.6 2.0 0.0 0.0 0.0 0.0 3.6 1.7
SW 213.75 - 236.25 2.3 1.9 0.4 0.0 0.0 0.0 4.6 1.7
WSW 236.25 - 258.75 2.8 1.6 0.4 0.0 0.0 0.0 4.9 1.7
W 258.75 - 281.25 8.0 8.6 1.8 0.5 0.0 0.0 18.9 2.0
WNW 281.25 - 303.75 6.2 1.3 0.9 0.7 0.3 0.0 9.4 2.1
NW 303.75 - 326.25 1.5 1.5 0.8 0.0 0.0 0.0 3.8 2.0
NNW 326.25 - 348.75 1.2 2.2 1.2 0.0 0.0 0.0 4.6 2.5
2.8
39.9 36.7 15.4 4.9 0.3 0.0 100.0 2.2
TOTAL NUMBER OF OBSERVATIONS =741
POSSIBLE NUMBER OF OBSERVATIONS =744
DATA RECOVERY =99.6%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
Joint Frequency Distribution for February, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 1.4 1.3 0.4 0.0 0.0 0.0 3.2 2.0
NNE 11.25 - 33.75 0.7 1.1 0.3 0.0 0.0 0.0 2.2 2.0
NE 33.75 - 56.25 0.7 0.3 0.0 0.0 0.0 0.0 1.0 1.1
ENE 56.25 - 78.75 1.4 0.1 0.1 0.0 0.0 0.0 1.7 1.5
E 78.75 - 101.25 1.0 0.9 0.0 0.0 0.0 0.0 1.9 1.6
ESE 101.25 - 123.75 2.0 4.2 1.9 0.7 0.0 0.0 8.8 2.6
SE 123.75 - 146.25 2.6 3.0 5.6 2.6 0.1 0.0 13.9 3.6
SSE 146.25 - 168.75 1.1 3.2 4.3 2.0 0.0 0.0 10.6 3.8
S 168.75 - 191.25 1.3 2.2 0.9 0.1 0.0 0.0 4.5 2.4
SSW 191.25 - 213.75 2.3 2.3 0.7 0.1 0.0 0.0 5.5 2.0
SW 213.75 - 236.25 1.4 2.0 1.1 0.6 0.0 0.0 5.2 2.8
WSW 236.25 - 258.75 2.0 3.0 1.3 0.1 0.0 0.0 6.5 2.4
W 258.75 - 281.25 4.7 9.3 1.0 0.0 0.0 0.0 15.1 2.0
WNW 281.25 - 303.75 4.2 1.6 0.9 0.3 0.0 0.0 6.9 1.9
NW 303.75 - 326.25 1.9 1.9 1.9 0.7 0.0 0.0 6.3 2.7
NNW 326.25 - 348.75 1.7 2.9 0.7 0.1 0.0 0.0 5.5 2.3
1.4
30.6 39.2 21.1 7.5 0.1 0.0 100.0 2.6
TOTAL NUMBER OF OBSERVATIONS =696
POSSIBLE NUMBER OF OBSERVATIONS =696
DATA RECOVERY =100.0%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
Joint Frequency Distribution for March, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 0.8 3.3 3.9 0.3 0.0 0.0 8.3 3.1
NNE 11.25 - 33.75 0.5 3.2 1.4 0.0 0.0 0.0 5.0 2.6
NE 33.75 - 56.25 0.3 0.8 0.6 0.0 0.0 0.0 1.7 2.5
ENE 56.25 - 78.75 0.6 0.8 0.0 0.0 0.0 0.0 1.4 1.7
E 78.75 - 101.25 0.0 0.9 0.2 0.0 0.0 0.0 1.1 2.3
ESE 101.25 - 123.75 1.7 2.4 1.5 0.5 0.2 0.0 6.2 2.8
SE 123.75 - 146.25 0.8 2.7 3.2 3.3 1.1 0.0 11.0 4.6
SSE 146.25 - 168.75 0.6 2.0 3.2 2.0 0.2 0.0 7.9 4.1
S 168.75 - 191.25 0.8 1.2 1.1 0.5 0.0 0.0 3.5 3.0
SSW 191.25 - 213.75 0.3 1.2 1.4 1.4 0.9 0.5 5.6 5.6
SW 213.75 - 236.25 0.9 1.4 0.9 0.3 0.9 0.0 4.4 4.3
WSW 236.25 - 258.75 0.9 1.5 0.8 0.6 0.0 0.0 3.8 2.8
W 258.75 - 281.25 1.7 6.6 4.7 0.9 0.2 0.0 14.0 3.0
WNW 281.25 - 303.75 2.9 3.2 1.8 0.5 0.0 0.0 8.3 2.5
NW 303.75 - 326.25 2.0 4.2 1.8 0.2 0.0 0.0 8.2 2.5
NNW 326.25 - 348.75 1.1 3.9 3.6 0.3 0.0 0.0 8.9 3.0
0.9
15.6 39.3 29.9 10.6 3.3 0.5 100.0 3.3
TOTAL NUMBER OF OBSERVATIONS =662
POSSIBLE NUMBER OF OBSERVATIONS =744
DATA RECOVERY =89.0%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
Joint Frequency Distribution for January - March 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 1.0 2.1 2.4 0.1 0.0 0.0 5.7 2.8
NNE 11.25 - 33.75 0.9 1.9 0.6 0.0 0.0 0.0 3.3 2.2
NE 33.75 - 56.25 0.5 0.8 0.2 0.0 0.0 0.0 1.5 1.9
ENE 56.25 - 78.75 1.3 0.5 0.1 0.0 0.0 0.0 1.9 1.5
E 78.75 - 101.25 0.6 1.0 0.0 0.0 0.0 0.0 1.7 1.8
ESE 101.25 - 123.75 2.4 3.2 1.5 0.7 0.0 0.0 7.9 2.5
SE 123.75 - 146.25 2.5 3.4 4.2 2.7 0.4 0.0 13.1 3.7
SSE 146.25 - 168.75 1.3 2.3 2.9 1.5 0.0 0.0 8.1 3.5
S 168.75 - 191.25 1.2 1.7 0.8 0.2 0.0 0.0 3.9 2.4
SSW 191.25 - 213.75 1.4 1.9 0.7 0.5 0.3 0.1 4.9 3.2
SW 213.75 - 236.25 1.6 1.8 0.8 0.3 0.3 0.0 4.7 2.9
WSW 236.25 - 258.75 2.0 2.0 0.8 0.2 0.0 0.0 5.1 2.3
W 258.75 - 281.25 4.9 8.2 2.4 0.5 0.0 0.0 16.1 2.3
WNW 281.25 - 303.75 4.5 2.0 1.2 0.5 0.1 0.0 8.2 2.1
NW 303.75 - 326.25 1.8 2.5 1.5 0.3 0.0 0.0 6.0 2.4
NNW 326.25 - 348.75 1.3 3.0 1.8 0.1 0.0 0.0 6.2 2.7
1.8
29.2 38.4 21.9 7.5 1.2 0.1 100.0 2.7
TOTAL NUMBER OF OBSERVATIONS =2099
POSSIBLE NUMBER OF OBSERVATIONS =2184
DATA RECOVERY =96.1%
Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
WIND GUST in mps for JANUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 1.4 1.8 2.7 2.2 2.5 1.8 2.2 3.7 2.9 2.5 3.7 4.4 4.6 4.7 3.8 3.4 1.6 2.6 2.2 2.2 1.6 1.5 1.7 3.7 2.7 4.7 1.4
2 2.7 2.0 2.2 2.0 3.3 3.7 2.6 2.7 3.1 3.5 3.9 3.6 3.8 3.5 3.6 4.4 3.2 3.0 2.3 1.8 2.3 4.5 4.4 4.2 3.2 4.5 1.8
3 5.5 5.3 4.5 6.9 9.1 7.5 5.3 6.1 7.0 5.6 9.9 ---------7.9 7.3 3.4 2.7 2.3 3.0 2.2 1.9 2.7 2.7 5.2 9.9 1.9
4 2.6 2.7 2.7 2.3 4.6 4.3 4.0 1.9 1.4 3.5 3.6 5.8 7.8 8.5 7.8 9.2 6.7 5.4 6.6 7.1 5.1 3.9 5.1 3.7 4.8 9.2 1.4
5 4.0 2.4 1.5 1.3 1.0 1.5 1.2 0.9 2.9 2.6 2.3 2.6 1.9 1.3 1.5 2.5 6.7 7.6 7.5 4.7 3.8 6.0 6.8 5.0 3.3 7.6 0.9
6 4.8 4.2 3.3 2.7 2.8 3.9 5.1 4.9 4.7 5.0 8.2 9.8 11.9 11.6 11.3 10.9 10.1 9.9 8.8 11.0 8.2 8.4 8.4 8.0 7.4 11.9 2.7
7 8.7 8.1 7.3 5.4 4.0 2.9 1.6 5.6 8.2 7.7 7.5 8.2 6.8 6.8 6.8 8.4 6.2 6.7 7.0 6.8 7.3 7.3 8.0 8.2 6.7 8.7 1.6
8 8.6 6.9 7.6 8.5 8.9 8.7 8.3 5.0 6.0 6.6 5.9 4.5 4.8 4.5 4.6 3.1 3.3 2.9 3.9 3.9 3.9 3.6 4.0 3.6 5.5 8.9 2.9
9 3.8 3.8 4.3 3.8 3.6 6.5 8.7 3.5 9.4 9.1 8.8 10.8 11.2 10.3 9.3 3.8 4.7 18.1 17.0 13.0 11.6 12.3 12.7 6.3 8.6 18.1 3.5
10 15.6 15.1 9.5 7.7 8.1 3.5 3.7 6.0 9.6 9.5 13.2 12.4 9.1 11.0 9.1 9.8 6.7 4.3 5.8 5.2 6.5 14.3 12.3 10.3 9.1 15.6 3.5
11 7.4 8.4 7.7 3.9 4.8 4.9 4.8 8.5 8.3 2.7 3.2 8.1 3.6 6.9 5.7 5.4 4.6 3.7 2.9 8.8 6.9 7.6 10.9 8.9 6.2 10.9 2.7
12 3.8 9.4 8.9 10.2 14.4 8.8 8.3 11.8 13.8 12.2 17.1 12.6 13.9 10.4 11.9 13.8 16.6 17.4 17.3 20.1 20.0 26.1 15.7 9.2 13.5 26.1 3.8
13 3.8 5.0 5.1 6.2 4.2 2.6 2.7 2.6 3.9 4.1 4.7 8.7 11.3 12.1 11.9 11.3 10.1 9.1 9.9 11.3 11.2 12.9 11.1 7.4 7.6 12.9 2.6
14 5.9 6.6 3.8 5.7 8.0 17.1 10.7 9.7 7.7 4.3 5.3 2.3 1.7 1.6 3.7 2.8 1.9 2.6 2.7 2.7 4.9 7.3 4.0 3.8 5.3 17.1 1.6
15 2.6 2.8 7.2 4.6 3.5 2.9 3.5 6.0 4.5 7.6 10.4 9.3 9.7 7.0 5.1 5.3 3.3 3.8 4.0 3.3 3.5 2.6 2.4 2.5 4.9 10.4 2.4
16 3.2 3.0 3.0 2.5 2.9 2.6 2.4 2.2 2.3 2.2 2.0 2.6 2.5 3.6 2.8 1.4 2.5 3.0 5.6 5.2 4.4 3.7 2.9 3.1 3.0 5.6 1.4
17 7.0 10.1 12.0 7.1 5.7 7.2 12.6 9.7 9.7 3.5 8.2 3.8 3.1 2.5 4.6 2.9 3.6 3.2 3.3 4.1 3.5 2.6 2.8 2.3 5.6 12.6 2.3
18 4.6 1.7 3.3 3.2 3.8 3.9 3.6 2.7 2.9 3.5 1.8 4.9 3.2 3.7 2.9 1.9 2.5 3.1 3.9 5.6 5.1 5.2 5.1 4.6 3.6 5.6 1.7
19 5.5 5.8 5.2 5.0 4.3 4.6 4.5 3.5 3.9 2.8 1.5 4.5 4.2 2.9 3.2 1.5 1.4 1.1 1.8 2.6 2.5 2.5 1.8 3.0 3.3 5.8 1.1
20 5.1 8.2 6.6 8.3 11.0 9.9 4.4 5.4 4.5 3.0 8.5 9.6 7.9 7.0 8.7 9.5 9.2 7.4 4.0 5.0 6.3 3.1 3.2 2.3 6.6 11.0 2.3
21 2.7 3.6 5.7 5.9 6.5 7.2 4.3 4.7 4.7 7.4 8.0 7.3 7.2 5.6 3.8 4.3 2.0 1.5 0.7 1.8 2.4 1.6 1.9 3.1 4.3 8.0 0.7
22 3.2 2.0 2.4 2.9 4.2 6.3 5.0 4.3 6.9 7.6 6.9 5.2 6.0 5.0 6.6 5.5 8.0 8.7 5.4 5.8 5.2 6.9 5.6 4.8 5.4 8.7 2.0
23 2.7 2.7 1.9 2.2 1.4 2.2 2.8 2.4 1.3 3.1 3.0 2.8 3.9 3.5 2.9 2.6 2.5 3.0 1.5 0.8 2.0 2.0 1.0 1.1 2.3 3.9 0.8
24 1.2 0.9 0.9 1.1 1.4 1.5 3.1 2.7 1.6 1.5 2.8 4.8 5.5 5.0 4.8 3.7 3.4 3.4 1.8 3.5 3.6 3.4 2.8 1.9 2.8 5.5 0.9
25 1.6 2.5 4.2 3.0 4.2 4.5 2.7 3.9 4.4 3.9 2.7 2.8 3.1 3.1 2.0 2.7 2.5 2.9 8.2 9.0 9.0 9.0 8.2 10.3 4.6 10.3 1.6
26 5.9 8.0 3.9 4.6 7.4 5.8 4.4 3.5 2.4 4.2 3.3 2.0 4.3 4.6 3.4 3.5 2.3 3.0 2.4 3.4 3.7 3.8 3.1 3.5 4.0 8.0 2.0
27 4.4 2.3 2.8 2.4 1.6 1.5 1.9 2.2 1.7 1.9 4.3 4.4 3.6 3.3 3.5 3.6 1.8 3.3 2.7 2.0 1.5 1.4 2.9 2.5 2.6 4.4 1.4
28 2.2 1.8 1.9 2.8 3.9 2.5 2.7 2.8 2.0 1.9 3.4 4.2 3.7 3.3 3.9 3.4 1.7 3.3 2.4 2.8 2.2 2.3 2.8 3.1 2.8 4.2 1.7
29 1.9 2.7 2.6 1.7 2.0 1.3 2.2 2.6 1.4 2.0 3.5 3.5 3.9 3.7 3.9 3.6 2.7 1.9 2.7 1.4 2.3 1.8 2.9 4.6 2.6 4.6 1.3
30 4.6 5.2 4.5 3.0 2.5 3.0 4.0 4.6 4.2 2.7 3.3 4.8 4.5 3.9 4.4 3.9 2.6 2.2 2.5 3.1 2.8 3.1 2.7 2.2 3.5 5.2 2.2
31 4.5 5.7 4.1 3.6 6.0 7.3 5.2 7.6 10.3 9.5 9.8 11.8 11.6 10.7 9.2 8.7 6.8 5.0 5.2 4.3 4.7 5.1 5.1 4.4 6.9 11.8 3.6
MEAN 4.6 4.9 4.6 4.3 4.9 4.9 4.5 4.6 5.1 4.7 5.8 6.1 6.0 5.7 5.6 5.3 4.7 5.0 5.0 5.3 5.2 5.7 5.3 4.6 5.1
MAX 15.6 15.1 12.0 10.2 14.4 17.1 12.6 11.8 13.8 12.2 17.1 12.6 13.9 12.1 11.9 13.8 16.6 18.1 17.3 20.1 20.0 26.1 15.7 10.3 26.1
MIN 1.2 0.9 0.9 1.1 1.0 1.3 1.2 0.9 1.3 1.5 1.5 2.0 1.7 1.3 1.5 1.4 1.4 1.1 0.7 0.8 1.5 1.4 1.0 1.1 0.7
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =741 DATA RECOVERY RATE =
MONTHLY MEAN =5.1 mps
MAXIMUM WIND GUST =26.1 mps DATE OF OCCURRENCE =1/12 AT 2200 MAXIMUM DAILY MEAN =13.5 mps DATE OF OCCURRENCE =1/12
MINIMUM WIND GUST =0.7 mps DATE OF OCCURRENCE =1/21 AT 1900 MINUMUM DAILY MEAN =2.3 mps DATE OF OCCURRENCE =1/23
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
99.6%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
WIND GUST in mps for FEBRUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 3.6 4.1 4.3 5.9 6.1 8.7 5.0 7.0 6.5 5.6 9.3 7.5 9.7 7.2 10.1 7.8 7.0 4.3 4.4 4.6 6.5 3.5 6.1 6.3 6.3 10.1 3.5
2 6.6 6.9 2.2 4.9 4.0 0.7 1.7 1.7 2.7 3.7 5.1 7.2 7.7 7.6 6.3 6.2 4.2 3.0 2.8 2.2 3.4 5.4 4.3 2.2 4.3 7.7 0.7
3 2.3 2.7 1.8 5.7 9.5 7.5 6.1 5.2 2.4 3.1 3.9 5.1 6.2 8.5 7.7 7.7 4.9 1.9 1.9 5.2 4.6 4.8 2.5 2.6 4.7 9.5 1.8
4 2.2 2.6 2.9 2.7 3.4 3.0 3.4 3.8 3.9 5.6 8.7 10.9 11.4 13.1 10.4 10.9 9.8 5.9 3.8 5.8 3.9 8.6 7.8 12.3 6.5 13.1 2.2
5 11.3 9.5 15.9 5.9 10.7 11.1 10.7 12.9 11.9 13.4 12.8 10.4 13.2 12.2 10.4 9.6 7.9 9.0 8.4 6.7 6.9 5.3 9.0 5.1 10.0 15.9 5.1
6 3.9 4.4 2.5 8.8 6.2 5.3 3.3 2.5 3.1 6.5 7.4 10.8 12.1 11.1 8.1 8.8 9.7 10.4 8.0 7.1 2.8 2.2 3.8 4.4 6.4 12.1 2.2
7 7.6 9.3 10.2 6.1 3.5 3.2 3.5 2.3 7.7 6.1 5.6 6.0 2.6 2.3 1.9 2.2 3.6 2.4 0.9 1.8 2.0 2.7 3.0 3.1 4.1 10.2 0.9
8 2.3 2.7 3.4 2.3 3.5 2.7 2.2 1.9 2.7 1.9 2.9 4.6 4.9 5.0 5.2 3.2 4.4 4.3 5.5 5.3 1.6 2.0 3.2 2.5 3.3 5.5 1.6
9 5.9 4.0 2.6 3.7 2.3 1.6 0.9 1.9 1.3 2.0 3.2 3.4 2.6 4.1 3.7 1.9 2.7 2.4 1.8 2.9 3.4 3.6 3.0 2.9 2.8 5.9 0.9
10 3.7 3.7 4.5 4.8 5.3 6.0 4.1 5.7 4.7 6.7 6.2 6.8 8.2 8.7 8.0 8.4 7.3 6.7 7.5 4.6 5.6 5.2 6.0 5.2 6.0 8.7 3.7
11 4.3 5.0 4.3 5.7 4.0 1.8 2.9 3.1 1.5 2.9 3.6 3.1 3.3 3.2 3.5 3.5 2.4 1.9 1.8 2.9 2.3 2.2 3.4 4.9 3.2 5.7 1.5
12 4.1 3.9 3.7 3.6 3.1 3.2 2.4 3.9 3.6 3.1 3.5 3.1 3.5 4.2 4.3 2.9 2.8 3.4 4.1 4.1 4.0 3.9 4.3 4.6 3.6 4.6 2.4
13 2.5 1.5 2.0 3.1 1.8 2.5 2.2 3.3 2.8 4.2 8.7 9.0 7.5 7.5 6.7 8.1 3.8 2.5 2.8 3.0 2.8 4.4 2.4 2.4 4.0 9.0 1.5
14 3.2 3.1 1.9 1.9 3.0 2.3 3.5 2.4 2.3 5.2 4.9 5.5 7.1 9.8 9.9 8.9 8.5 8.1 8.6 7.8 8.7 10.6 7.9 6.0 5.9 10.6 1.9
15 7.4 9.4 10.2 10.9 9.3 7.1 6.0 5.2 6.5 10.6 9.8 7.0 3.7 3.4 6.1 4.8 4.6 2.4 1.9 3.7 3.8 3.7 3.8 3.3 6.0 10.9 1.9
16 4.1 3.4 2.9 3.1 1.8 2.8 2.2 2.3 2.2 3.1 5.8 7.3 4.4 7.2 6.3 5.9 4.2 8.7 5.4 5.0 6.7 7.3 5.1 5.5 4.7 8.7 1.8
17 8.1 4.6 3.9 4.9 4.5 3.2 3.8 4.4 3.2 3.3 4.0 4.3 6.2 9.6 8.5 6.7 6.6 3.4 5.0 7.6 6.9 7.4 4.6 5.7 5.4 9.6 3.2
18 5.2 5.6 7.5 9.5 7.9 8.4 6.6 9.0 11.6 10.3 12.1 13.3 14.1 9.5 6.7 4.2 3.0 3.1 2.5 3.5 5.5 6.2 5.0 2.9 7.2 14.1 2.5
19 6.2 5.0 2.6 3.6 2.7 4.1 2.7 6.7 10.6 6.7 10.9 13.9 14.9 14.0 12.4 15.9 16.1 9.2 8.1 7.4 6.5 5.9 3.0 2.0 7.9 16.1 2.0
20 3.1 1.8 1.4 1.1 2.9 1.9 1.8 3.3 3.2 5.1 8.4 10.8 10.3 10.0 8.1 6.5 5.0 4.4 6.5 5.1 4.9 6.9 10.3 11.8 5.6 11.8 1.1
21 11.7 10.6 6.6 8.7 10.0 7.6 10.6 5.5 5.9 6.1 6.2 3.6 8.4 8.9 7.8 8.1 4.9 5.3 3.6 2.5 2.5 2.5 5.8 3.6 6.5 11.7 2.5
22 2.5 3.6 1.5 1.4 1.2 1.2 1.3 1.6 1.7 2.8 3.3 5.1 4.6 4.8 7.1 5.4 3.5 2.4 3.0 3.4 5.5 7.0 4.9 4.0 3.5 7.1 1.2
23 4.7 4.6 4.9 6.0 4.9 4.9 3.9 3.1 3.9 3.9 4.7 4.9 5.6 5.6 4.2 4.4 3.7 3.1 2.6 4.5 3.6 2.8 3.8 3.9 4.3 6.0 2.6
24 4.8 4.7 5.0 5.6 6.0 2.3 3.9 4.0 3.4 5.0 7.1 8.3 7.1 5.7 5.8 4.4 4.3 3.3 4.0 5.0 4.7 5.7 4.4 3.9 4.9 8.3 2.3
25 4.9 3.3 2.4 2.8 2.9 2.3 3.1 2.7 1.6 7.9 9.3 9.3 9.7 11.6 11.5 8.3 6.2 5.0 4.4 6.5 7.8 7.6 8.3 7.5 6.1 11.6 1.6
26 7.5 4.3 9.8 9.6 9.0 10.6 12.1 9.2 6.8 13.2 13.5 13.6 11.5 14.5 14.0 15.0 10.0 10.4 20.4 17.3 14.0 11.3 12.4 7.7 11.6 20.4 4.3
27 9.2 7.5 8.3 8.7 8.4 12.1 9.9 12.4 12.9 12.3 13.5 12.2 15.1 14.3 10.0 10.4 6.6 6.8 4.0 3.8 3.7 4.5 2.7 4.4 8.9 15.1 2.7
28 5.2 5.5 5.3 3.3 5.8 5.4 5.3 2.9 3.6 4.3 7.7 7.7 6.5 5.5 5.3 5.6 5.2 3.4 2.6 3.4 4.9 5.4 4.9 5.2 5.0 7.7 2.6
29 3.9 4.0 7.4 2.6 4.9 3.2 7.4 7.6 6.0 12.6 14.9 14.4 12.5 15.4 10.2 10.0 8.8 8.5 6.8 11.3 12.0 15.1 14.8 13.6 9.5 15.4 2.6
MEAN 5.2 4.9 4.9 5.1 5.1 4.7 4.6 4.7 4.8 6.1 7.5 7.9 8.1 8.4 7.6 7.1 5.9 5.0 4.9 5.3 5.2 5.6 5.5 5.2 5.8
MAX 11.7 10.6 15.9 10.9 10.7 12.1 12.1 12.9 12.9 13.4 14.9 14.4 15.1 15.4 14.0 15.9 16.1 10.4 20.4 17.3 14.0 15.1 14.8 13.6 20.4
MIN 2.2 1.5 1.4 1.1 1.2 0.7 0.9 1.6 1.3 1.9 2.9 3.1 2.6 2.3 1.9 1.9 2.4 1.9 0.9 1.8 1.6 2.0 2.4 2.0 0.7
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =696 DATA RECOVERY RATE =
MONTHLY MEAN =5.8 mps
MAXIMUM WIND GUST =20.4 mps DATE OF OCCURRENCE =2/26 AT 1900 MAXIMUM DAILY MEAN =11.6 mps DATE OF OCCURRENCE =2/26
MINIMUM WIND GUST =0.7 mps DATE OF OCCURRENCE =2/2 AT 0600 MINUMUM DAILY MEAN =2.8 mps DATE OF OCCURRENCE =2/9
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
100.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
WIND GUST in mps for MARCH, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 16.6 10.8 12.5 13.3 13.0 15.2 15.6 15.3 16.5 16.7 17.3 17.3 15.8 15.2 9.9 13.9 12.2 13.3 18.4 18.8 17.4 19.6 20.9 21.0 15.7 21.0 9.9
2 20.6 22.3 19.3 22.5 25.1 27.1 24.2 22.7 23.6 22.8 26.8 19.9 17.4 21.5 12.8 11.7 11.0 7.8 3.9 2.9 4.1 4.9 5.7 5.2 16.1 27.1 2.9
3 5.1 8.8 6.5 9.9 9.0 7.9 9.6 5.1 3.9 11.5 16.7 15.9 15.7 6.7 10.6 10.3 7.9 8.3 7.8 3.0 3.4 2.3 2.7 3.4 8.0 16.7 2.3
4 5.5 6.3 5.1 5.1 6.1 8.1 8.9 5.6 3.1 4.8 3.1 6.2 6.9 9.2 7.4 7.7 7.6 4.0 3.1 2.7 3.0 3.1 3.7 3.0 5.4 9.2 2.7
5 3.8 3.0 5.0 3.6 6.0 6.3 6.2 10.4 11.8 11.5 11.6 11.3 11.7 11.5 7.8 8.6 9.2 8.4 6.0 8.2 7.5 9.0 8.0 9.5 8.2 11.8 3.0
6 10.6 8.8 7.4 6.3 3.1 2.9 3.8 4.4 3.1 5.5 5.5 7.0 4.4 7.7 5.5 2.8 2.2 2.7 2.9 3.5 4.1 2.8 2.2 5.0 4.7 10.6 2.2
7 5.5 4.6 5.6 1.2 0.8 1.7 1.3 1.5 1.7 3.7 5.0 6.1 7.0 7.2 8.3 8.1 8.6 7.0 5.5 7.5 8.0 7.4 7.9 8.2 5.4 8.6 0.8
8 3.6 3.8 3.0 2.6 1.9 4.3 3.5 1.5 4.1 3.1 4.6 7.7 8.2 7.9 8.2 9.5 8.6 7.0 4.6 3.3 2.2 1.8 2.4 4.0 4.6 9.5 1.5
9 3.6 3.1 3.4 2.6 2.7 1.4 1.6 1.1 4.4 7.2 8.6 11.1 10.4 8.3 8.7 10.2 10.8 6.7 7.3 5.8 6.6 7.2 5.7 5.5 6.0 11.1 1.1
10 2.4 2.3 6.6 7.8 5.1 4.2 4.6 4.1 10.6 12.3 14.9 16.1 13.6 13.5 13.7 13.1 11.6 13.0 4.5 4.0 4.5 5.7 6.7 7.1 8.4 16.1 2.3
11 6.9 7.0 7.3 7.5 7.3 7.3 7.8 8.5 9.8 12.3 9.5 10.0 8.0 12.6 10.7 13.5 11.0 4.5 3.2 3.1 3.8 5.1 5.2 4.7 7.8 13.5 3.1
12 5.1 4.6 3.2 7.1 5.3 6.2 4.9 4.1 5.0 7.0 7.3 6.8 5.5 6.2 4.2 4.8 4.8 10.9 8.0 3.4 2.0 1.6 3.1 ---5.3 10.9 1.6
13 ---3.7 4.7 3.9 4.3 3.8 5.4 6.5 6.1 9.1 7.1 7.0 11.0 7.9 9.8 7.7 7.3 5.7 5.6 5.5 3.9 3.9 4.8 6.7 6.1 11.0 3.7
14 5.2 4.7 5.0 4.2 4.2 6.0 6.6 8.4 8.1 8.7 9.0 8.6 7.5 7.7 8.7 8.4 8.2 6.6 6.3 5.8 6.1 5.4 5.6 5.0 6.7 9.0 4.2
15 5.8 9.4 8.6 9.3 9.0 8.1 8.4 12.0 12.0 11.6 11.0 10.3 9.8 7.7 7.1 5.8 6.5 7.1 5.3 3.4 4.1 3.8 5.5 5.7 7.8 12.0 3.4
16 4.7 6.9 6.9 5.8 4.9 3.8 8.6 7.7 8.8 7.0 8.0 8.0 7.2 7.0 6.9 7.2 8.6 7.0 5.1 4.6 5.3 5.4 6.2 6.8 6.6 8.8 3.8
17 4.1 3.5 2.9 4.1 8.3 7.6 8.1 6.9 7.3 8.2 6.6 5.3 4.4 5.8 6.2 7.7 7.2 6.5 4.7 4.3 4.5 5.2 3.5 3.4 5.7 8.3 2.9
18 4.9 3.6 5.8 2.7 3.8 3.9 3.5 1.5 4.2 4.8 6.8 7.7 6.2 6.6 6.7 6.7 5.1 5.1 3.4 3.3 5.1 5.8 6.6 6.6 5.0 7.7 1.5
19 6.2 6.1 6.0 5.9 4.6 5.0 5.2 4.5 3.0 3.8 4.5 5.6 4.9 5.8 7.4 5.6 5.6 5.7 4.3 3.5 3.8 4.3 5.8 6.1 5.1 7.4 3.0
20 7.3 8.1 6.8 7.7 7.0 7.1 8.0 5.8 2.9 7.4 8.3 7.1 6.0 8.9 10.1 9.6 7.8 5.7 3.1 3.1 5.8 5.7 5.7 6.2 6.7 10.1 2.9
21 7.1 7.1 6.7 7.6 7.8 7.9 7.2 13.0 5.0 6.3 12.3 9.0 6.8 7.0 6.3 6.7 5.6 4.9 5.4 3.2 4.0 4.3 4.7 5.1 6.7 13.0 3.2
22 6.8 5.7 4.6 5.6 4.6 4.5 5.8 4.1 8.1 10.2 11.6 11.6 15.4 14.1 10.3 5.8 3.6 6.0 11.6 6.1 7.3 10.7 10.9 3.5 7.9 15.4 3.5
23 8.0 8.4 5.0 4.2 11.4 8.5 6.7 7.9 12.9 16.3 18.4 17.1 15.9 15.3 14.9 10.6 9.6 2.7 14.1 15.6 5.8 4.3 2.6 2.7 9.9 18.4 2.6
24 3.5 1.4 2.2 3.7 2.8 3.2 3.3 6.9 5.3 4.4 6.6 5.5 8.1 10.2 11.5 9.6 7.5 4.9 3.0 2.6 3.0 7.4 6.8 8.4 5.5 11.5 1.4
25 7.5 5.9 3.2 3.4 3.9 5.6 6.5 6.5 4.1 5.2 3.0 3.2 3.5 4.3 3.7 8.4 9.8 2.9 5.8 2.7 8.3 2.4 2.6 2.8 4.8 9.8 2.4
26 6.8 6.3 3.0 3.1 8.0 8.8 8.1 5.6 7.4 7.0 11.1 10.0 8.3 10.8 12.9 7.6 7.1 11.2 12.0 9.8 8.2 9.8 8.6 7.9 8.3 12.9 3.0
27 6.8 5.6 3.3 2.9 2.6 3.1 3.6 3.1 6.9 7.6 9.2 9.6 10.6 10.9 10.9 11.8 15.6 9.3 7.6 5.6 5.8 8.5 9.4 7.8 7.4 15.6 2.6
28 9.0 10.2 8.2 12.2 11.0 7.7 10.1 10.0 10.7 11.3 14.2 13.4 10.8 8.0 7.0 6.7 ---------------------------------
29 ---------------------------------------------------------------------------------
30 ---------------------------------------------------------------------------------
31 ---------------------------------------------------------------------------------
MEAN 6.8 6.5 6.0 6.3 6.6 6.7 7.0 7.0 7.5 8.8 9.9 9.8 9.3 9.5 8.9 8.6 8.2 6.8 6.4 5.4 5.5 5.8 6.0 6.2 7.3
MAX 20.6 22.3 19.3 22.5 25.1 27.1 24.2 22.7 23.6 22.8 26.8 19.9 17.4 21.5 14.9 13.9 15.6 13.3 18.4 18.8 17.4 19.6 20.9 21.0 27.1
MIN 2.4 1.4 2.2 1.2 0.8 1.4 1.3 1.1 1.7 3.1 3.0 3.2 3.5 4.3 3.7 2.8 2.2 2.7 2.9 2.6 2.0 1.6 2.2 2.7 0.8
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =662 DATA RECOVERY RATE =
MONTHLY MEAN =7.3 mps
MAXIMUM WIND GUST =27.1 mps DATE OF OCCURRENCE =3/2 AT 0600 MAXIMUM DAILY MEAN =16.1 mps DATE OF OCCURRENCE =3/2
MINIMUM WIND GUST =0.8 mps DATE OF OCCURRENCE =3/7 AT 0500 MINUMUM DAILY MEAN =4.6 mps DATE OF OCCURRENCE =3/8
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
89.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 1
Wind Speed and Direction in mps for January, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 321/01.4 226/01.7 220/02.6 219/01.4 242/01.0 213/01.2 194/01.1 235/01.2 206/02.1 068/01.1 051/01.3 069/01.9 050/02.0
2 210/00.9 036/00.9 299/00.8 261/01.5 209/01.6 206/01.3 218/02.6 216/02.4 209/02.1 105/01.8 018/01.8 019/01.4 069/01.7
3 191/03.7 189/04.0 189/05.2 194/05.5 207/05.1 205/04.8 190/04.7 196/08.0 188/02.6 169/05.2 168/06.9 163/04.5 175/03.8
4 020/01.4 085/01.1 038/01.3 031/01.9 016/01.1 347/04.6 018/01.9 063/01.1 036/00.9 041/01.5 023/02.0 026/02.6 014/02.7
5 035/02.1 147/00.8 149/00.9 143/01.2 049/00.8 226/01.1 273/01.3 352/01.2 110/00.8 036/01.0 077/01.0 104/01.3 052/01.6
6 172/02.3 153/02.0 199/02.1 175/02.4 214/04.1 217/04.0 250/02.7 225/04.3 195/03.9 182/04.4 175/06.8 180/07.4 176/08.3
7 185/06.5 192/07.7 187/06.5 182/06.1 188/04.3 279/01.6 342/03.7 321/04.8 345/04.5 360/05.6 358/05.4 001/05.6 003/05.4
8 331/07.4 356/04.4 353/05.0 339/06.5 338/05.6 341/05.1 325/05.6 328/05.8 334/05.9 008/03.4 080/02.4 042/03.1 027/03.6
9 212/04.9 213/04.2 195/05.3 205/05.6 190/05.8 186/08.1 187/08.2 189/08.0 189/08.3 178/05.7 186/07.3 183/11.5 177/11.4
10 323/06.8 304/04.4 336/05.3 316/03.4 268/05.8 111/01.8 209/05.1 198/04.9 195/06.7 189/07.2 186/07.2 170/06.1 181/08.2
11 301/05.0 304/04.6 300/04.6 320/02.5 327/04.7 325/05.1 321/05.2 315/05.3 311/03.9 316/04.2 315/05.2 322/04.3 321/04.4
12 233/04.0 240/05.0 231/04.2 194/03.6 172/05.5 218/04.2 261/06.2 258/06.0 265/06.5 259/05.2 251/05.9 252/05.3 260/04.9
13 102/02.2 100/02.1 013/04.1 059/02.2 004/04.3 017/02.9 058/01.5 243/02.3 217/02.9 177/02.5 184/03.5 180/09.1 171/10.8
14 238/05.8 239/04.6 288/02.7 ---292/03.7 319/08.8 348/07.1 333/09.2 006/06.6 022/03.6 046/03.3 082/01.8 019/02.0
15 144/01.8 136/02.2 124/02.2 114/02.3 079/02.0 081/02.0 137/01.5 318/05.0 014/04.6 030/03.9 014/07.8 006/08.6 009/08.1
16 213/01.6 178/01.2 196/01.8 220/02.8 236/02.8 192/02.0 216/02.5 248/02.3 206/01.5 133/01.0 118/01.3 147/03.1 160/04.2
17 192/08.2 187/11.1 182/07.6 185/06.3 183/05.4 187/06.4 184/11.0 183/12.0 183/11.3 182/11.7 186/07.0 010/04.1 013/03.4
18 348/03.8 300/02.1 205/02.5 215/02.8 185/02.5 316/01.3 309/01.5 260/01.7 007/01.2 312/01.9 347/02.8 321/03.7 330/04.1
19 208/04.8 224/04.1 233/03.5 233/02.3 229/03.1 247/03.0 221/02.0 211/03.9 201/04.2 203/03.6 190/04.1 187/07.1 021/02.9
20 202/05.9 196/07.2 192/07.9 195/08.1 198/07.2 171/08.1 187/04.3 193/02.3 189/09.6 185/09.9 181/07.8 184/06.3 177/05.2
21 191/07.0 191/03.4 188/06.3 194/07.6 192/10.3 214/05.2 164/01.9 199/02.8 183/05.1 186/07.9 184/06.6 182/05.9 176/04.9
22 196/03.7 210/03.4 216/03.5 204/04.5 197/04.9 201/04.5 186/03.6 189/05.4 179/05.5 179/04.5 180/04.6 177/05.6 164/06.2
23 195/04.0 200/02.9 198/03.1 203/03.2 026/01.6 217/02.5 216/01.2 211/03.0 201/03.8 200/03.5 184/02.8 043/02.0 025/01.6
24 106/00.7 135/00.4 167/01.1 059/00.5 065/00.5 ------216/02.1 047/01.3 130/00.6 118/01.4 095/01.8 001/01.2
25 205/03.6 247/01.1 204/02.0 221/02.8 184/04.0 199/04.6 185/03.6 168/02.2 132/01.7 133/01.7 026/00.9 359/01.5 025/01.9
26 350/03.8 340/04.2 012/04.6 333/04.5 310/06.6 319/04.5 020/03.0 152/01.1 236/01.0 031/01.8 060/00.7 357/01.7 041/02.1
27 235/03.2 246/02.1 236/02.6 224/03.7 234/02.3 245/01.6 248/01.7 285/01.0 199/01.3 175/02.1 144/02.3 059/02.1 017/01.6
28 155/01.2 242/01.6 180/01.7 209/01.3 292/01.4 356/01.8 146/01.2 181/01.8 173/01.7 027/01.0 016/01.0 043/01.3 085/01.6
29 005/01.2 268/01.1 217/01.3 192/01.2 222/01.4 231/01.0 174/00.7 233/01.0 348/00.6 042/00.9 062/01.4 041/01.5 040/01.7
30 223/02.3 226/03.6 202/02.2 244/02.0 310/00.9 219/02.0 200/02.5 202/03.3 ------049/01.6 004/03.3 015/02.7
31 174/02.5 200/03.2 203/05.2 194/06.1 200/05.5 200/06.5 199/06.6 191/08.0 188/07.5 183/06.2 181/06.5 173/06.9 178/06.6
MEAN 211/03.7 213/03.3 210/03.5 209/03.5 230/03.7 232/03.7 216/03.5 226/04.0 203/04.0 140/03.8 113/03.9 075/04.3 048/04.2
MAX 192/08.2 187/11.1 192/07.9 195/08.1 192/10.3 319/08.8 184/11.0 183/12.0 183/11.3 182/11.7 014/07.8 183/11.5 177/11.4
MIN 106/00.7 135/00.4 299/00.8 059/00.5 065/00.5 231/01.0 174/00.7 285/01.0 348/00.6 130/00.6 060/00.7 043/01.3 001/01.2
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 2
Wind Speed and Direction in mps for January, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 049/01.8 054/01.6 060/01.6 042/01.4 014/00.2 303/00.7 277/00.8 252/01.2 270/01.4 226/01.9 212/02.3 256/01.5 220/02.6 014/00.2
2 059/01.6 055/01.5 049/02.0 245/02.4 261/01.9 219/01.2 227/02.7 189/02.2 205/03.4 206/04.2 194/03.0 213/02.0 206/04.2 299/00.8
3 171/04.6 182/03.9 199/02.5 175/02.2 004/01.1 204/01.8 206/02.7 343/01.3 283/00.9 010/00.9 350/01.4 194/03.6 196/08.0 283/00.9
4 319/05.6 310/06.5 326/04.5 329/04.7 315/05.7 330/04.5 328/04.4 015/02.0 154/01.4 064/01.2 338/02.9 010/02.8 310/06.5 036/00.9
5 048/01.3 022/02.2 325/06.2 327/05.9 348/03.5 347/03.6 016/02.0 015/01.9 011/01.4 323/03.6 346/03.2 025/02.1 325/06.2 110/00.8
6 172/06.7 177/08.6 196/06.3 192/09.2 184/08.5 187/07.5 181/06.4 182/06.1 185/07.1 177/07.1 171/06.6 188/05.6 192/09.2 153/02.0
7 347/05.7 340/06.1 333/05.9 342/05.6 358/05.9 004/05.9 003/07.1 360/07.0 359/08.0 355/07.1 321/07.1 339/05.8 359/08.0 279/01.6
8 028/03.8 035/03.3 038/02.8 359/01.5 263/01.6 238/02.6 219/02.7 237/03.5 224/03.7 222/03.7 206/03.4 336/04.0 331/07.4 359/01.5
9 180/11.3 198/08.9 198/04.6 180/09.5 186/09.3 248/08.6 315/07.9 314/08.4 316/11.7 310/11.0 325/07.2 208/08.0 316/11.7 213/04.2
10 180/09.8 178/09.6 180/06.0 218/03.3 324/04.1 324/06.1 019/04.2 346/05.4 304/09.5 357/05.5 002/04.2 254/05.9 180/09.8 111/01.8
11 313/04.4 330/04.9 069/02.9 163/02.5 174/05.0 210/03.3 261/05.3 228/04.5 182/06.5 245/04.8 244/04.5 293/04.5 182/06.5 163/02.5
12 255/04.8 259/04.9 252/05.4 247/05.4 257/06.3 276/07.0 282/08.5 280/11.7 282/10.2 305/06.5 134/03.0 250/05.8 280/11.7 134/03.0
13 168/09.1 178/08.1 181/07.4 179/06.7 184/08.1 177/08.3 176/09.4 177/10.8 180/11.7 180/11.0 185/08.9 166/06.2 180/11.7 058/01.5
14 063/01.4 015/01.0 054/01.2 090/01.6 118/02.1 095/01.9 281/02.8 158/02.3 103/02.1 133/01.3 118/01.6 040/03.4 333/09.2 015/01.0
15 019/05.7 031/03.7 033/02.5 305/01.7 293/01.9 240/02.3 155/01.2 232/01.1 192/01.4 209/01.3 132/01.2 070/03.2 006/08.6 232/01.1
16 154/04.4 165/04.6 183/03.5 192/04.1 194/03.1 175/03.5 207/02.2 195/02.2 196/07.0 189/10.4 191/09.0 188/03.4 189/10.4 133/01.0
17 059/02.5 278/01.7 197/01.3 214/01.9 204/01.8 218/03.3 209/03.8 204/03.1 211/02.2 243/02.2 239/02.5 200/05.5 183/12.0 197/01.3
18 001/04.1 038/02.5 104/01.4 279/01.3 221/02.4 227/03.0 226/03.6 224/04.1 214/03.0 214/04.2 197/05.7 273/02.8 197/05.7 007/01.2
19 082/01.9 006/01.1 345/00.7 212/01.1 088/00.6 302/01.3 281/01.3 200/02.5 206/02.4 183/04.2 184/04.7 217/02.9 187/07.1 088/00.6
20 178/06.4 184/06.7 188/08.6 201/04.8 172/05.9 168/03.3 184/07.7 189/05.6 204/03.3 181/06.4 185/06.0 187/06.4 185/09.9 193/02.3
21 181/03.3 171/05.0 169/05.0 181/03.4 191/03.9 191/04.3 189/05.2 208/03.5 197/04.1 195/06.7 199/06.4 188/05.2 192/10.3 164/01.9
22 159/04.8 156/04.6 166/04.9 189/04.2 185/04.5 186/04.7 203/03.4 214/03.6 216/04.0 232/03.3 223/04.3 192/04.4 164/06.2 232/03.3
23 038/01.8 029/02.0 358/01.7 048/01.1 130/00.9 183/01.2 039/00.8 077/00.8 188/00.9 158/01.3 133/00.4 156/02.0 195/04.0 133/00.4
24 175/03.8 169/03.7 175/03.7 188/03.6 208/03.1 222/03.4 215/02.6 191/02.4 210/03.0 207/04.4 195/05.7 163/02.3 195/05.7 135/00.4
25 049/01.9 037/02.1 041/02.2 031/02.2 023/01.6 008/02.7 360/05.8 348/09.9 352/09.2 352/04.2 359/06.4 026/03.3 348/09.9 026/00.9
26 052/02.7 055/01.7 078/01.9 050/01.9 344/01.1 230/03.0 232/03.3 221/02.6 227/03.0 222/03.2 207/02.8 349/02.8 310/06.6 060/00.7
27 037/01.9 046/01.8 047/01.8 075/00.9 184/02.1 343/02.1 224/01.2 298/01.3 028/00.9 220/01.0 203/01.9 236/01.9 224/03.7 075/00.9
28 048/02.0 028/02.7 036/01.6 034/00.4 224/01.9 091/00.8 119/00.8 169/01.6 180/01.2 221/02.1 266/01.2 132/01.4 028/02.7 034/00.4
29 018/01.6 041/02.1 069/01.9 046/01.6 338/01.5 305/00.9 018/01.0 171/01.2 214/01.6 240/02.5 223/02.1 325/01.4 240/02.5 348/00.6
30 023/02.2 057/01.9 073/02.0 062/01.4 218/01.7 191/01.2 184/01.2 204/01.2 207/03.7 194/03.9 194/04.0 204/02.3 194/04.0 310/00.9
31 166/06.3 162/05.2 151/05.1 173/05.3 181/04.3 195/05.1 194/03.5 188/05.0 180/06.1 178/06.6 178/05.8 184/05.6 191/08.0 174/02.5
MEAN 074/04.2 062/04.0 097/03.5 186/03.3 222/03.4 231/03.5 232/03.7 220/03.9 215/04.4 218/04.4 207/04.2 207/03.8
MAX 180/11.3 178/09.6 188/08.6 180/09.5 186/09.3 248/08.6 176/09.4 280/11.7 180/11.7 180/11.0 191/09.0 183/12.0
MIN 048/01.3 015/01.0 345/00.7 034/00.4 014/00.2 303/00.7 277/00.8 077/00.8 188/00.9 010/00.9 133/00.4 014/00.2
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =739 DATA RECOVERY RATE = 99.3%
MONTHLY MEAN = 207/03.8 MAXIMUM WIND SPEED =12.0 AT 183 DEGREES DATE OF OCCURRENCE = 1/17 AT 800
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 1
Wind Speed and Direction in mps for February, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 177/06.3 171/05.3 177/07.0 177/10.4 185/10.7 196/03.8 195/05.4 187/04.0 173/04.6 180/06.2 172/04.1 163/04.8 168/06.0
2 189/05.0 201/05.3 198/04.3 187/04.0 210/02.8 217/01.9 255/01.2 108/00.8 161/01.3 172/02.3 174/03.4 173/05.8 173/06.1
3 ------------322/06.7 320/06.6 330/05.7 326/04.3 343/03.8 056/02.0 042/02.5 023/02.9 023/04.2
4 277/01.9 285/02.1 296/01.7 189/01.3 222/03.5 224/04.4 221/05.1 195/02.9 154/03.1 165/02.7 177/06.2 161/05.5 161/06.5
5 172/10.3 174/10.9 178/11.9 178/12.4 185/11.8 188/12.4 189/12.1 187/11.2 186/11.7 190/09.9 180/10.9 180/10.4 179/11.9
6 193/04.6 187/05.0 190/05.8 190/07.0 198/05.5 206/04.2 350/01.6 259/01.6 229/04.4 205/04.7 196/04.3 180/04.7 169/05.9
7 171/06.5 191/07.0 146/05.4 186/07.5 200/05.6 196/03.2 189/04.0 193/03.6 179/06.9 177/06.1 176/07.0 178/05.4 177/03.0
8 ---------------------------166/01.7 163/02.2 167/04.2 165/03.7
9 007/03.1 309/01.7 018/01.7 202/01.5 228/01.2 344/01.0 161/00.7 220/02.0 303/00.8 101/01.5 089/02.0 067/02.4 053/02.3
10 338/03.5 330/03.2 344/02.6 324/01.0 333/01.1 303/02.3 313/03.0 316/05.0 321/05.0 318/07.1 316/07.6 315/05.5 311/05.1
11 317/04.8 321/04.0 332/02.4 307/04.2 344/02.8 131/00.5 187/00.8 219/02.0 321/01.1 067/01.6 050/01.7 028/02.2 047/02.2
12 293/01.1 231/03.2 223/03.8 211/03.5 238/02.2 222/00.7 164/01.2 237/01.9 226/01.2 008/01.3 359/01.5 056/01.8 017/02.4
13 196/06.9 197/06.4 203/05.7 203/06.2 208/05.3 196/05.0 242/02.0 220/02.3 243/02.1 192/03.9 169/05.8 170/08.2 174/09.0
14 102/01.4 167/00.9 212/02.4 178/01.4 209/01.0 212/03.0 221/04.0 241/02.8 219/02.1 170/02.8 158/04.3 161/04.3 163/05.2
15 189/07.1 176/07.5 172/09.1 169/10.2 179/10.2 188/08.2 193/03.5 190/03.3 178/07.5 180/09.5 177/08.5 047/03.4 021/02.6
16 219/02.9 224/03.1 220/03.2 216/02.9 228/02.5 232/02.7 239/02.4 240/02.0 215/02.0 172/02.9 269/02.8 273/04.2 355/01.9
17 256/02.8 272/02.1 222/03.1 238/02.7 262/02.2 287/01.9 228/02.7 220/02.6 173/02.9 160/01.4 021/01.7 022/02.2 136/04.2
18 167/02.9 181/04.2 187/04.7 202/05.0 189/04.0 195/05.3 189/04.9 183/07.8 185/09.6 188/10.8 186/11.5 177/09.4 176/08.7
19 212/05.8 189/06.9 188/03.6 213/02.6 190/07.5 192/08.8 187/08.3 189/07.3 164/04.6 175/04.5 177/09.5 177/08.0 170/07.4
20 306/01.4 037/01.7 007/01.3 311/01.0 180/01.1 196/01.3 194/01.8 198/03.1 201/03.1 192/02.4 192/04.4 176/09.2 176/08.8
21 176/07.3 180/05.2 104/02.1 099/02.5 077/01.5 186/03.6 173/08.2 176/08.2 188/08.4 195/06.9 188/05.9 198/03.3 283/02.9
22 ---------------------------087/01.4 135/01.4 319/01.5 253/01.3
23 229/02.7 233/02.9 229/02.4 226/03.3 219/02.5 231/03.2 239/02.0 226/01.9 134/01.2 084/01.6 070/02.5 061/02.4 056/02.3
24 231/03.3 227/03.9 223/04.5 222/04.0 237/03.1 209/02.2 221/03.6 203/03.8 175/01.8 166/03.1 168/05.6 164/06.8 167/06.7
25 195/07.7 210/05.6 208/05.8 198/06.3 198/07.0 213/05.6 201/06.7 205/06.2 195/06.6 176/07.1 178/07.3 172/07.7 164/06.4
26 188/04.3 195/04.8 226/04.4 244/05.5 235/04.1 238/04.1 235/03.4 219/04.0 188/06.0 172/09.2 166/10.5 166/06.5 215/04.1
27 336/07.2 332/06.0 327/07.3 313/08.5 317/10.1 320/09.2 326/09.3 312/07.9 317/08.3 317/08.3 318/07.2 331/06.3 331/07.1
28 223/03.6 217/04.1 217/05.3 218/05.0 212/03.8 208/03.8 196/05.9 192/07.2 191/06.1 169/04.1 166/05.5 160/05.1 152/04.1
29 194/07.2 196/08.0 185/07.9 182/07.6 189/08.5 186/09.0 180/09.8 186/06.5 177/07.0 177/09.7 175/08.8 185/10.3 174/10.1
MEAN 216/04.7 215/04.6 211/04.6 210/04.9 217/04.8 217/04.4 214/04.4 213/04.3 200/04.6 166/04.7 166/05.4 159/05.3 162/05.2
MAX 172/10.3 174/10.9 178/11.9 178/12.4 185/11.8 188/12.4 189/12.1 187/11.2 186/11.7 188/10.8 186/11.5 180/10.4 179/11.9
MIN 293/01.1 167/00.9 007/01.3 311/01.0 209/01.0 131/00.5 161/00.7 108/00.8 303/00.8 008/01.3 135/01.4 319/01.5 253/01.3
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 2
Wind Speed and Direction in mps for February, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 166/05.7 167/03.6 167/04.6 173/03.6 166/04.4 175/05.1 168/06.8 178/05.7 196/06.3 202/04.9 165/01.7 177/05.5 185/10.7 165/01.7
2 175/06.1 176/05.6 206/02.4 012/02.2 034/01.5 ------------------184/03.4 175/06.1 108/00.8
3 018/05.5 356/06.0 224/04.4 309/04.5 330/02.7 321/00.9 282/02.4 266/02.2 248/01.7 076/01.2 223/01.5 332/03.6 322/06.7 321/00.9
4 154/07.2 152/05.8 164/06.8 174/05.0 171/05.2 177/04.0 183/05.2 181/03.7 183/04.5 184/06.6 178/09.7 188/04.6 178/09.7 189/01.3
5 178/11.6 178/09.6 176/08.9 171/07.1 167/06.3 168/04.2 168/02.1 198/03.4 197/03.4 213/05.2 201/04.7 182/08.9 188/12.4 168/02.1
6 171/07.2 193/04.7 204/06.3 216/05.9 208/05.9 200/06.1 158/04.5 105/01.8 170/05.0 186/07.9 199/08.3 194/05.1 199/08.3 350/01.6
7 090/01.3 325/04.7 326/04.0 081/01.2 ------------------------186/07.5 081/01.2
8 161/03.1 157/03.0 165/01.6 268/00.8 094/00.5 139/01.1 041/03.1 010/03.3 356/01.9 353/01.6 320/02.4 ---167/04.2 094/00.5
9 051/02.8 024/03.2 013/02.0 356/03.2 309/01.2 297/01.6 309/02.0 296/01.7 285/02.4 298/02.3 330/02.8 338/02.0 024/03.2 161/00.7
10 318/07.2 316/07.0 311/06.6 312/06.7 318/06.8 329/06.2 344/05.5 336/04.5 339/06.2 336/03.7 309/03.5 323/04.8 316/07.6 324/01.0
11 061/02.2 045/01.9 032/01.9 041/01.6 122/00.7 222/02.4 205/02.9 211/02.5 229/02.4 242/02.2 248/02.0 340/02.2 317/04.8 131/00.5
12 358/02.3 146/02.8 103/02.3 043/01.5 235/01.8 222/02.6 231/03.3 232/03.8 225/04.2 206/05.2 214/04.7 229/02.5 206/05.2 222/00.7
13 173/08.6 175/08.0 174/06.5 185/04.7 201/03.3 205/01.3 247/01.2 181/01.1 171/01.3 032/01.4 017/01.6 195/04.5 174/09.0 181/01.1
14 187/04.4 163/06.6 165/05.8 170/06.5 179/06.8 178/05.3 187/05.8 177/08.6 172/09.5 192/06.1 184/03.9 182/04.4 172/09.5 167/00.9
15 043/02.8 277/03.4 337/02.4 015/03.2 010/01.6 253/01.9 216/03.3 223/03.0 219/04.3 221/04.6 221/04.7 200/05.2 179/10.2 010/01.6
16 138/02.2 333/03.0 025/02.5 012/02.1 341/04.7 324/05.4 002/04.5 347/04.7 315/06.1 313/05.4 253/02.7 274/03.3 315/06.1 355/01.9
17 167/06.1 179/05.6 156/04.8 165/04.6 182/02.7 212/03.9 200/04.3 194/03.9 193/04.1 198/05.2 184/02.2 202/03.3 167/06.1 160/01.4
18 260/02.8 046/02.1 065/02.2 002/02.1 058/02.0 223/02.3 233/04.1 244/03.1 228/03.9 216/03.3 221/04.4 195/05.0 186/11.5 058/02.0
19 168/06.0 157/06.9 155/07.9 180/08.1 192/07.2 116/03.6 165/01.6 059/01.8 141/01.7 ------174/05.9 177/09.5 165/01.6
20 173/05.7 181/05.0 183/04.9 212/03.7 198/03.5 185/03.4 197/03.3 175/04.0 172/05.9 169/08.1 172/08.7 190/04.0 176/09.2 311/01.0
21 098/02.4 049/03.1 056/01.9 333/04.3 100/01.9 085/01.1 052/00.9 151/01.6 195/01.7 319/01.9 ---142/03.8 188/08.4 052/00.9
22 017/02.7 017/02.0 357/04.5 010/02.1 265/01.0 231/02.8 231/02.5 234/03.3 249/02.6 271/01.7 223/02.4 ---357/04.5 265/01.0
23 068/02.8 048/02.4 016/02.2 035/02.5 005/02.5 264/02.0 223/03.3 222/02.6 225/02.6 230/02.5 230/03.4 221/02.5 230/03.4 134/01.2
24 158/04.7 122/02.2 139/03.4 159/04.0 191/02.4 199/02.8 203/03.0 219/04.0 195/06.9 190/04.7 188/06.3 191/04.0 195/06.9 175/01.8
25 165/07.5 158/05.8 191/04.0 225/03.1 212/03.6 222/05.0 219/05.0 189/06.3 189/07.7 183/09.1 180/07.7 194/06.3 183/09.1 225/03.1
26 214/05.7 216/05.3 255/06.2 221/04.8 195/06.8 211/04.4 214/04.9 252/06.3 296/06.9 302/08.7 351/06.5 221/05.7 166/10.5 235/03.4
27 323/07.4 330/04.6 320/05.2 309/03.3 317/04.5 339/03.2 221/02.9 230/02.3 209/02.5 241/01.5 220/02.8 308/06.0 317/10.1 241/01.5
28 153/04.4 145/04.9 144/04.8 161/03.0 243/01.6 242/02.0 218/02.7 222/03.9 223/03.6 203/05.6 202/07.0 195/04.5 192/07.2 243/01.6
29 173/09.3 181/08.0 183/07.1 183/10.5 182/09.4 178/07.4 173/10.5 170/12.7 172/13.3 176/12.7 188/12.1 181/09.3 172/13.3 186/06.5
MEAN 145/05.1 150/04.7 161/04.4 213/04.0 202/03.7 215/03.4 211/03.8 212/03.9 213/04.5 225/04.8 217/04.7 201/04.5
MAX 178/11.6 178/09.6 176/08.9 183/10.5 182/09.4 178/07.4 173/10.5 170/12.7 172/13.3 176/12.7 188/12.1 172/13.3
MIN 090/01.3 045/01.9 165/01.6 268/00.8 094/00.5 321/00.9 052/00.9 181/01.1 171/01.3 076/01.2 223/01.5 094/00.5
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =658 DATA RECOVERY RATE = 94.5%
MONTHLY MEAN = 201/04.5 MAXIMUM WIND SPEED =13.3 AT 172 DEGREES DATE OF OCCURRENCE = 2/29 AT 2200
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 1
Wind Speed and Direction in mps for March, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13
Day
1 195/10.7 193/11.2 180/09.7 176/09.8 165/10.2 162/09.9 164/11.1 164/10.9 162/12.7 162/10.3 163/10.5 169/09.3 198/08.2
2 201/15.3 198/17.0 199/18.7 198/18.6 198/17.9 197/18.1 193/16.9 188/16.5 183/16.7 180/15.7 186/15.0 189/11.6 190/10.8
3 213/05.9 215/05.7 188/07.1 185/06.0 195/04.9 171/05.5 190/06.9 126/02.3 264/02.3 270/05.9 279/10.3 275/06.2 277/06.2
4 191/05.2 194/05.2 190/05.0 193/04.4 209/04.2 191/06.5 192/07.9 188/06.3 186/03.7 173/03.2 133/02.7 028/03.9 062/03.9
5 220/03.8 201/04.7 209/03.9 219/04.0 221/04.8 208/06.9 198/08.6 191/10.2 189/09.0 181/09.1 182/08.8 182/09.3 182/09.5
6 182/06.9 179/07.3 182/07.4 178/08.5 184/07.6 195/06.7 019/02.9 173/01.8 054/01.6 078/01.5 024/02.9 116/02.3 054/01.9
7 179/01.7 148/02.0 158/00.8 150/00.7 201/00.6 045/00.6 328/00.5 271/00.6 251/00.9 022/01.8 029/02.9 031/03.3 019/03.9
8 106/01.4 142/01.6 150/01.6 196/01.6 319/01.3 102/01.2 185/01.9 164/01.7 084/01.8 032/01.9 033/02.4 038/04.1 033/05.4
9 217/02.8 218/02.8 228/03.1 228/03.5 212/02.7 229/02.9 220/02.6 213/02.3 036/01.4 151/03.4 165/05.4 158/06.6 169/06.8
10 172/04.4 171/06.8 181/07.7 183/06.0 177/07.3 200/05.0 197/05.4 196/05.1 176/07.0 163/08.1 169/08.2 172/08.2 158/08.9
11 178/05.3 177/06.3 180/06.6 185/06.7 190/05.5 193/06.7 199/06.3 211/04.5 202/04.9 191/08.2 186/07.8 205/07.0 202/05.9
12 197/04.7 174/04.7 180/07.3 188/08.3 189/07.8 201/04.6 214/03.5 218/03.0 199/02.4 166/04.4 193/05.3 197/03.1 184/03.1
13 ---------------------------------007/04.4 349/07.3
14 334/06.0 356/03.9 343/05.2 339/04.8 355/02.8 002/04.0 358/05.3 360/06.0 355/09.1 354/08.1 001/07.3 353/07.5 358/07.0
15 300/02.6 197/01.6 345/04.6 189/01.7 307/02.2 335/04.0 332/04.6 346/01.3 010/06.2 359/07.5 004/07.1 004/06.5 006/06.4
16 213/02.7 241/03.3 178/02.5 221/02.2 251/01.9 218/04.2 332/02.4 191/02.1 023/01.6 043/02.5 023/04.2 004/06.0 355/06.2
17 234/03.5 218/02.5 226/02.1 266/01.2 320/01.5 316/05.0 338/04.6 327/04.9 336/04.8 359/05.7 036/03.8 033/02.9 041/02.7
18 274/01.0 277/01.7 289/02.1 255/01.2 037/00.7 241/02.3 226/02.2 162/01.2 113/01.7 060/02.4 173/05.1 156/05.5 106/03.3
19 250/02.4 237/03.8 237/03.1 230/03.3 236/02.2 224/02.8 224/02.5 199/02.1 045/01.6 057/02.2 075/02.4 076/03.0 063/02.7
20 226/04.7 232/04.2 229/04.2 228/04.4 232/04.1 235/02.3 224/04.2 229/03.0 068/01.7 164/04.0 249/03.6 302/04.7 315/05.9
21 231/04.3 239/03.5 232/04.2 228/04.8 232/04.2 230/03.1 225/02.9 242/05.0 247/03.7 129/02.2 327/03.6 038/04.1 297/02.0
22 232/04.3 235/04.1 213/03.5 235/03.5 234/03.7 233/04.0 226/04.8 196/03.8 169/04.6 158/05.8 177/06.2 173/06.1 160/08.0
23 182/06.5 194/08.6 188/10.1 190/10.4 181/10.3 172/09.0 170/08.1 171/09.9 169/10.6 169/10.8 164/11.4 172/12.3 186/13.2
24 ------------------029/02.9 011/03.6 011/02.8 002/01.6 015/03.0 006/04.4 355/03.8
25 329/04.2 330/05.6 010/02.8 356/03.5 010/03.4 006/04.1 351/03.1 267/02.7 019/02.0 017/02.1 354/03.5 329/04.7 332/06.3
26 234/02.1 212/01.8 249/02.6 238/01.8 326/05.6 330/05.3 333/05.2 338/04.4 339/04.7 316/04.7 299/04.0 300/02.7 340/02.9
27 330/06.2 336/04.2 145/01.7 244/03.2 242/03.7 234/03.6 222/03.8 165/02.8 169/04.4 171/05.4 160/06.4 157/07.1 151/06.8
28 186/10.5 189/10.5 186/10.0 183/09.8 184/08.5 175/07.5 186/07.6 199/07.4 189/08.7 168/11.2 172/10.7 180/09.3 169/06.4
29 224/01.7 157/01.1 156/01.5 300/01.9 208/01.8 242/01.5 232/01.7 198/01.8 180/02.9 117/03.3 026/02.2 138/03.8 155/04.0
30 209/03.5 192/03.5 211/03.2 178/04.5 232/03.1 230/03.6 213/04.5 219/04.9 199/04.8 191/06.5 160/05.8 172/04.2 151/04.2
31 198/04.2 189/05.3 176/05.0 182/05.2 192/05.0 182/05.6 171/04.9 174/05.6 172/07.5 172/08.1 166/09.7 177/09.9 174/08.3
MEAN 217/04.8 206/05.0 200/05.1 211/05.0 223/04.8 215/05.0 224/05.0 203/04.6 161/04.9 132/05.6 139/06.1 135/05.9 117/05.9
MAX 201/15.3 198/17.0 199/18.7 198/18.6 198/17.9 197/18.1 193/16.9 188/16.5 183/16.7 180/15.7 186/15.0 172/12.3 186/13.2
MIN 274/01.0 157/01.1 158/00.8 150/00.7 201/00.6 045/00.6 328/00.5 271/00.6 251/00.9 078/01.5 026/02.2 116/02.3 054/01.9
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country Page 2
Wind Speed and Direction in mps for March, 2024
Hr Beg 13 14 15 16 17 18 19 20 21 22 23
Hr End 14 15 16 17 18 19 20 21 22 23 24
Day MEAN MAX SPD MIN SPD
1 188/09.0 184/09.3 181/11.2 185/11.2 186/11.7 195/11.1 196/12.3 201/14.3 199/14.2 200/14.2 199/15.4 182/11.2 199/15.4 198/08.2
2 239/09.9 310/05.2 337/06.5 334/08.0 307/07.9 015/02.5 001/03.1 234/02.1 229/04.3 227/04.8 216/05.6 218/11.2 199/18.7 234/02.1
3 191/03.4 352/03.4 339/03.9 316/04.7 270/02.3 163/02.1 286/02.8 225/02.7 226/02.7 233/02.3 208/03.3 233/04.5 279/10.3 163/02.1
4 042/03.0 319/04.5 333/04.9 315/04.8 340/03.1 004/02.1 284/01.8 233/02.9 266/01.6 241/02.4 218/02.3 224/04.0 192/07.9 266/01.6
5 183/07.0 180/06.4 180/06.7 179/05.7 187/05.6 192/05.0 185/06.4 196/07.1 193/08.0 185/07.2 184/07.1 193/06.9 191/10.2 220/03.8
6 344/02.5 315/02.8 013/01.4 228/01.3 304/00.8 230/02.1 234/02.0 231/02.5 240/01.3 233/01.5 214/01.4 208/03.3 178/08.5 304/00.8
7 021/05.4 017/06.3 008/06.9 359/07.0 349/05.7 310/05.1 314/06.2 318/06.2 305/06.4 307/05.8 130/02.3 350/03.5 359/07.0 328/00.5
8 026/05.2 022/06.1 012/06.2 013/05.9 015/05.1 007/04.1 333/02.7 327/02.0 325/02.0 248/02.2 216/02.4 033/03.0 012/06.2 102/01.2
9 176/05.9 174/06.0 167/06.6 172/05.9 180/06.1 206/05.7 204/03.8 173/03.0 187/02.5 044/01.4 073/01.8 187/04.0 169/06.8 044/01.4
10 153/07.1 164/06.8 176/08.4 185/08.8 183/08.5 195/04.8 211/03.8 210/03.7 197/03.3 179/03.0 181/05.4 181/06.3 158/08.9 179/03.0
11 243/05.2 278/06.5 290/07.9 354/03.8 027/02.5 246/01.8 207/01.6 279/01.0 235/03.5 226/03.1 220/04.1 215/05.1 191/08.2 279/01.0
12 203/01.6 182/02.9 165/02.8 157/03.3 239/01.6 239/01.7 ---------------194/04.0 188/08.3 203/01.6
13 316/07.4 320/07.5 319/06.3 335/06.1 001/05.1 351/06.1 318/04.5 319/03.4 318/03.6 327/03.3 339/03.7 ---320/07.5 327/03.3
14 007/07.0 003/07.3 347/07.6 345/08.0 349/07.1 344/06.5 337/06.1 331/03.8 311/01.8 229/01.2 322/02.9 346/05.7 355/09.1 229/01.2
15 002/05.7 005/05.1 006/05.3 001/04.9 360/05.0 009/03.4 197/02.2 231/01.9 235/03.8 229/03.3 234/02.1 329/04.1 359/07.5 346/01.3
16 355/06.1 007/04.8 012/04.7 354/07.0 354/05.8 349/05.7 306/02.7 324/03.7 290/02.8 305/02.6 349/01.4 326/03.7 354/07.0 349/01.4
17 019/02.9 029/04.2 001/05.0 352/06.3 351/06.2 349/05.8 324/02.7 332/02.2 323/02.2 340/02.1 294/01.4 336/03.6 352/06.3 266/01.2
18 035/03.6 037/03.1 017/04.8 016/04.0 007/03.0 242/01.7 276/01.5 268/02.3 248/02.9 284/02.0 252/03.0 276/02.6 156/05.5 037/00.7
19 074/03.0 026/03.6 019/03.8 010/04.1 017/04.1 032/02.2 235/02.3 278/01.5 240/02.1 225/04.2 227/04.2 266/02.9 227/04.2 278/01.5
20 322/05.6 300/04.5 316/04.2 324/03.8 005/02.4 325/01.9 239/03.2 229/04.0 229/04.1 229/03.7 227/04.8 257/03.9 315/05.9 068/01.7
21 344/02.5 056/03.3 046/02.9 043/03.4 045/02.9 158/02.4 223/04.2 203/02.0 231/03.6 237/02.8 229/04.2 239/03.4 242/05.0 297/02.0
22 161/07.8 152/04.1 342/01.6 265/03.0 203/03.4 215/03.4 207/04.3 211/04.9 198/06.9 201/07.0 186/06.7 204/04.8 160/08.0 342/01.6
23 189/12.5 189/07.8 171/06.8 164/04.2 318/01.5 300/07.8 306/09.0 017/03.8 ---------186/08.8 186/13.2 318/01.5
24 346/06.2 007/07.1 315/08.1 346/04.8 025/04.1 030/02.4 357/03.2 348/03.7 325/07.2 025/02.8 328/03.4 360/04.2 315/08.1 002/01.6
25 343/05.2 313/03.1 347/02.6 337/03.4 335/01.3 346/02.3 217/02.7 268/03.1 200/02.5 316/01.5 240/01.2 332/03.2 332/06.3 240/01.2
26 319/04.2 320/05.4 327/03.7 324/02.7 358/05.5 110/02.6 277/05.0 315/04.3 277/05.1 308/05.7 307/06.9 308/04.1 307/06.9 238/01.8
27 155/07.1 147/07.0 152/07.8 166/08.1 165/07.9 170/07.1 175/07.1 182/05.6 181/04.4 169/03.5 182/06.4 178/05.5 166/08.1 145/01.7
28 360/04.1 324/06.8 013/06.4 016/05.0 ---------226/04.4 222/04.9 200/04.6 241/02.8 195/07.5 168/11.2 241/02.8
29 153/04.8 151/03.8 159/04.6 161/03.7 157/03.5 154/02.2 180/03.9 198/04.2 182/02.7 209/02.9 185/04.1 178/02.9 153/04.8 157/01.1
30 159/05.7 183/05.7 242/02.5 212/02.8 236/03.0 210/03.0 211/02.9 207/02.7 202/02.8 203/02.9 199/03.7 201/03.9 191/06.5 242/02.5
31 166/09.3 169/09.0 208/05.0 180/03.8 189/06.4 195/02.9 191/03.7 183/03.7 188/02.9 163/03.1 179/02.3 181/05.7 177/09.9 179/02.3
MEAN 360/05.7 343/05.5 343/05.4 329/05.1 333/04.6 269/03.9 250/04.1 249/03.8 238/04.0 237/03.7 223/04.0 224/04.9
MAX 189/12.5 184/09.3 181/11.2 185/11.2 186/11.7 195/11.1 196/12.3 201/14.3 199/14.2 200/14.2 199/15.4 199/18.7
MIN 203/01.6 315/02.8 013/01.4 228/01.3 304/00.8 242/01.7 276/01.5 279/01.0 240/01.3 229/01.2 240/01.2 328/00.5
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =716 DATA RECOVERY RATE = 96.2%
MONTHLY MEAN = 224/04.9 MAXIMUM WIND SPEED =18.7 AT 199 DEGREES DATE OF OCCURRENCE = 3/2 AT 300
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
Joint Frequency Distribution for January, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 1.5 0.5 1.4 2.0 0.3 0.0 5.7 4.2
NNE 11.25 - 33.75 1.2 3.7 1.4 0.3 0.0 0.0 6.5 2.5
NE 33.75 - 56.25 2.3 3.5 0.4 0.0 0.0 0.0 6.2 1.8
ENE 56.25 - 78.75 1.5 1.8 0.0 0.0 0.0 0.0 3.2 1.6
E 78.75 - 101.25 0.4 1.2 0.0 0.0 0.0 0.0 1.6 1.6
ESE 101.25 - 123.75 0.9 0.9 0.0 0.0 0.0 0.0 1.9 1.5
SE 123.75 - 146.25 1.1 0.9 0.0 0.0 0.0 0.0 2.0 1.6
SSE 146.25 - 168.75 1.1 0.8 1.2 0.5 0.1 0.0 3.8 3.5
S 168.75 - 191.25 0.9 2.2 5.1 9.1 2.6 1.4 21.2 6.0
SSW 191.25 - 213.75 1.9 4.3 6.2 3.2 0.4 0.0 16.1 3.9
SW 213.75 - 236.25 1.8 4.6 3.5 0.1 0.0 0.0 10.0 2.7
WSW 236.25 - 258.75 0.4 2.2 0.9 1.1 0.1 0.0 4.7 3.6
W 258.75 - 281.25 1.1 0.8 0.1 0.7 0.0 0.1 2.8 3.3
WNW 281.25 - 303.75 0.9 0.4 0.4 0.0 0.3 0.0 2.0 3.1
NW 303.75 - 326.25 0.7 0.4 2.2 2.0 0.4 0.3 6.0 5.1
NNW 326.25 - 348.75 0.7 0.4 2.2 1.8 0.3 0.0 5.3 4.6
0.8
18.4 28.7 25.0 20.8 4.5 1.8 100.0 3.9
TOTAL NUMBER OF OBSERVATIONS =739
POSSIBLE NUMBER OF OBSERVATIONS =744
DATA RECOVERY =99.3%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
Joint Frequency Distribution for February, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 0.5 1.5 0.6 0.3 0.0 0.0 2.9 2.8
NNE 11.25 - 33.75 0.3 2.4 0.5 0.2 0.0 0.0 3.3 2.4
NE 33.75 - 56.25 0.3 2.6 0.3 0.0 0.0 0.0 3.2 2.2
ENE 56.25 - 78.75 0.3 1.4 0.0 0.0 0.0 0.0 1.7 2.1
E 78.75 - 101.25 0.9 0.8 0.0 0.0 0.0 0.0 1.7 1.6
ESE 101.25 - 123.75 0.5 0.6 0.2 0.0 0.0 0.0 1.2 1.9
SE 123.75 - 146.25 0.6 0.3 0.6 0.0 0.0 0.0 1.5 2.5
SSE 146.25 - 168.75 0.8 2.0 3.2 4.0 0.3 0.0 10.2 4.6
S 168.75 - 191.25 0.9 1.4 5.2 10.3 6.1 2.4 26.3 6.9
SSW 191.25 - 213.75 0.6 2.3 5.5 5.8 0.3 0.0 14.4 4.6
SW 213.75 - 236.25 0.6 5.3 7.1 0.6 0.0 0.0 13.7 3.4
WSW 236.25 - 258.75 0.6 2.7 0.5 0.5 0.0 0.0 4.3 2.6
W 258.75 - 281.25 0.3 1.4 0.3 0.0 0.0 0.0 2.0 2.2
WNW 281.25 - 303.75 0.3 1.5 0.0 0.2 0.2 0.0 2.1 2.8
NW 303.75 - 326.25 1.1 0.8 1.8 2.7 0.9 0.0 7.3 5.0
NNW 326.25 - 348.75 0.3 1.1 1.5 1.4 0.0 0.0 4.3 4.2
0.0
8.8 28.0 27.2 25.8 7.8 2.4 100.0 4.5
TOTAL NUMBER OF OBSERVATIONS =658
POSSIBLE NUMBER OF OBSERVATIONS =696
DATA RECOVERY =94.5%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
Joint Frequency Distribution for March, 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 0.0 1.1 3.2 4.2 0.1 0.0 8.7 5.2
NNE 11.25 - 33.75 0.1 2.7 2.2 1.1 0.0 0.0 6.1 3.7
NE 33.75 - 56.25 0.6 1.1 1.0 0.0 0.0 0.0 2.7 2.6
ENE 56.25 - 78.75 0.1 1.1 0.1 0.0 0.0 0.0 1.4 2.5
E 78.75 - 101.25 0.0 0.1 0.0 0.0 0.0 0.0 0.1 1.8
ESE 101.25 - 123.75 0.3 0.4 0.3 0.0 0.0 0.0 1.0 2.3
SE 123.75 - 146.25 0.0 0.8 0.1 0.0 0.0 0.0 1.0 2.4
SSE 146.25 - 168.75 0.7 1.1 2.2 2.8 1.0 0.7 8.5 5.8
S 168.75 - 191.25 0.0 2.0 2.5 8.8 4.7 1.7 19.7 7.1
SSW 191.25 - 213.75 0.1 3.2 5.0 2.8 0.4 2.0 13.5 6.0
SW 213.75 - 236.25 0.6 4.6 7.0 0.3 0.0 0.0 12.4 3.3
WSW 236.25 - 258.75 0.7 2.5 1.3 0.1 0.1 0.0 4.7 2.8
W 258.75 - 281.25 0.8 1.0 0.4 0.6 0.1 0.0 2.9 3.4
WNW 281.25 - 303.75 0.1 1.3 0.4 0.3 0.0 0.0 2.1 3.4
NW 303.75 - 326.25 0.7 1.7 2.0 2.5 0.1 0.0 7.0 4.4
NNW 326.25 - 348.75 0.4 1.7 3.2 2.7 0.0 0.0 8.0 4.3
0.1
5.3 26.4 31.0 26.1 6.7 4.3 100.0 4.9
TOTAL NUMBER OF OBSERVATIONS =716
POSSIBLE NUMBER OF OBSERVATIONS =744
DATA RECOVERY =96.2%

Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott HiCountry
Joint Frequency Distribution for January - March 2024
Percentage frequency of occurence of hourly wind velocities for all stability classes
OVER 1.54 -3.09 -5.14 -8.23 -OVER AVG
0.5 3.09 5.14 8.23 10.8 10.8 SPEED
N 348.75 - 11.25 0.7 1.0 1.8 2.2 0.1 0.0 5.8 4.5
NNE 11.25 - 33.75 0.6 2.9 1.4 0.5 0.0 0.0 5.4 2.9
NE 33.75 - 56.25 1.1 2.4 0.6 0.0 0.0 0.0 4.1 2.0
ENE 56.25 - 78.75 0.7 1.4 0.0 0.0 0.0 0.0 2.1 1.9
E 78.75 - 101.25 0.4 0.7 0.0 0.0 0.0 0.0 1.1 1.6
ESE 101.25 - 123.75 0.6 0.7 0.1 0.0 0.0 0.0 1.4 1.8
SE 123.75 - 146.25 0.6 0.7 0.2 0.0 0.0 0.0 1.5 2.1
SSE 146.25 - 168.75 0.9 1.3 2.2 2.4 0.5 0.2 7.4 4.9
S 168.75 - 191.25 0.6 1.8 4.3 9.4 4.4 1.8 22.3 6.7
SSW 191.25 - 213.75 0.9 3.3 5.6 3.9 0.4 0.7 14.7 4.8
SW 213.75 - 236.25 1.0 4.8 5.8 0.3 0.0 0.0 12.0 3.2
WSW 236.25 - 258.75 0.6 2.5 0.9 0.6 0.1 0.0 4.6 3.0
W 258.75 - 281.25 0.8 1.0 0.3 0.4 0.0 0.0 2.6 3.1
WNW 281.25 - 303.75 0.5 1.0 0.3 0.1 0.1 0.0 2.1 3.1
NW 303.75 - 326.25 0.8 0.9 2.0 2.4 0.5 0.1 6.7 4.8
NNW 326.25 - 348.75 0.5 1.0 2.3 1.9 0.1 0.0 5.9 4.4
0.3
11.0 27.7 27.7 24.2 6.2 2.8 100.0 4.4
TOTAL NUMBER OF OBSERVATIONS =2113
POSSIBLE NUMBER OF OBSERVATIONS =2184
DATA RECOVERY =96.7%
Wind Speed (mps)
TOTALWind Direction
CALM
TOTAL
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
WIND GUST in mps for JANUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 3.3 3.5 4.1 2.9 3.0 2.3 3.3 3.5 4.3 2.1 2.7 3.7 3.6 3.6 3.1 2.8 2.4 1.1 1.5 2.0 2.5 3.3 3.3 4.2 3.0 4.3 1.1
2 2.1 2.9 2.2 3.3 2.7 3.1 4.7 4.2 3.9 3.0 3.3 2.7 3.4 3.3 3.1 3.8 4.6 4.2 3.7 4.8 5.1 6.2 7.5 5.9 3.9 7.5 2.1
3 7.9 7.7 7.9 8.9 8.1 10.9 10.7 11.4 4.9 12.5 12.4 9.5 10.1 8.7 7.6 5.3 3.9 2.5 3.7 4.6 3.6 1.9 2.7 3.7 7.1 12.5 1.9
4 3.3 2.5 3.3 3.3 4.2 9.4 4.3 3.7 2.5 2.9 4.1 5.0 6.1 9.7 10.5 8.6 10.0 10.5 9.3 7.8 5.4 3.3 3.7 9.1 5.9 10.5 2.5
5 5.0 1.5 1.9 1.8 1.3 2.3 2.5 2.3 1.9 1.8 2.2 2.6 2.3 4.2 4.3 12.4 12.2 7.9 6.9 6.0 5.1 3.1 7.1 6.5 4.4 12.4 1.3
6 3.4 3.9 4.9 5.0 7.1 6.4 4.9 5.7 8.0 9.6 11.2 14.2 14.1 12.2 15.0 12.6 15.2 14.8 14.0 11.1 11.0 15.9 16.2 11.6 10.3 16.2 3.4
7 12.3 13.5 10.3 9.1 7.2 6.0 8.5 9.5 7.2 11.5 9.0 10.6 8.5 8.9 9.7 11.0 10.3 10.8 11.0 12.3 11.8 12.0 10.5 12.5 10.2 13.5 6.0
8 13.1 8.7 9.7 12.3 11.5 8.8 10.2 10.4 11.6 6.7 4.3 5.1 6.0 6.3 5.3 4.5 2.7 3.3 4.9 4.3 5.3 6.0 5.5 5.0 7.2 13.1 2.7
9 7.1 6.6 9.1 9.7 9.7 12.6 13.4 13.4 14.5 11.0 14.8 17.1 17.3 17.4 17.0 13.9 16.0 17.0 24.8 21.1 19.7 23.1 23.0 20.9 15.4 24.8 6.6
10 17.6 13.6 16.6 10.7 13.1 5.6 10.6 8.3 12.3 13.1 12.7 11.3 13.5 15.2 14.7 10.3 8.9 9.8 17.5 7.5 13.5 20.5 14.9 10.1 12.6 20.5 5.6
11 8.8 8.7 7.8 6.6 10.7 9.8 8.7 10.0 10.3 9.9 10.7 7.8 9.4 11.1 11.0 6.6 5.7 8.0 7.1 11.6 10.2 10.9 10.3 8.9 9.2 11.6 5.7
12 8.0 12.5 9.7 12.3 10.2 11.2 12.5 15.8 13.6 12.5 12.1 13.9 13.5 17.2 11.3 13.3 13.3 15.2 19.7 20.7 24.2 23.4 21.0 7.2 14.3 24.2 7.2
13 6.3 4.1 12.7 5.8 8.0 5.7 2.5 3.7 5.1 5.1 11.9 14.3 16.7 14.7 12.8 12.0 10.7 13.6 13.1 14.8 17.9 17.9 18.5 16.3 11.0 18.5 2.5
14 14.5 15.3 6.7 ---9.6 22.5 20.7 22.7 19.4 9.4 5.5 4.7 7.4 3.2 2.5 2.6 3.4 5.9 5.3 12.9 5.6 4.4 3.1 4.7 9.2 22.7 2.5
15 3.7 5.8 4.2 4.7 4.7 4.3 4.3 15.0 12.8 10.9 16.0 13.2 12.7 11.2 6.9 6.1 3.8 4.9 4.5 4.1 3.3 2.6 3.0 3.7 6.9 16.0 2.6
16 3.1 2.4 3.9 5.1 4.7 4.9 4.3 5.8 4.5 2.3 2.7 6.1 7.1 7.3 7.2 7.7 7.1 6.3 7.1 4.2 7.1 13.7 16.1 14.3 6.5 16.1 2.3
17 16.3 18.3 12.3 9.8 12.7 13.8 16.9 18.3 17.3 18.8 16.7 11.3 8.2 5.4 3.3 2.7 4.2 4.2 5.2 7.2 6.9 5.4 5.1 6.4 10.3 18.8 2.7
18 10.5 3.7 5.2 5.4 4.2 3.8 4.1 3.6 2.9 4.5 6.5 7.7 8.0 7.5 4.4 3.0 2.3 4.8 4.3 5.0 5.5 5.2 6.7 8.2 5.3 10.5 2.3
19 7.8 5.9 4.7 4.1 4.8 5.4 3.9 6.7 7.4 6.9 6.8 11.4 8.6 3.3 2.1 1.4 1.8 1.8 2.1 2.9 4.8 6.3 7.1 9.8 5.3 11.4 1.4
20 9.9 11.9 13.1 13.2 11.8 12.4 9.7 8.2 16.0 15.5 13.9 11.3 8.8 10.5 11.1 15.5 11.3 9.8 7.3 11.7 10.5 8.3 9.8 9.8 11.3 16.0 7.3
21 10.7 7.1 10.5 12.5 14.7 11.2 6.3 8.6 10.3 13.1 11.0 10.0 8.4 6.7 7.8 7.7 6.3 6.1 6.6 7.5 6.4 8.8 10.3 9.5 9.1 14.7 6.1
22 7.8 5.7 8.9 8.4 8.5 7.9 7.3 7.8 7.5 7.7 7.7 10.1 9.2 7.6 7.0 7.3 7.4 8.0 7.1 5.8 5.5 6.1 5.1 5.8 7.4 10.1 5.1
23 5.7 5.1 4.4 5.0 3.6 4.3 3.0 5.8 5.8 5.7 5.5 3.9 2.8 3.6 3.1 3.2 1.9 2.1 2.1 1.9 2.1 1.5 2.5 1.1 3.6 5.8 1.1
24 1.4 1.3 1.7 1.2 1.8 ------4.0 2.3 1.8 2.7 3.4 3.7 6.3 6.6 5.9 6.5 4.6 5.2 3.7 3.9 4.8 6.7 9.1 4.0 9.1 1.2
25 7.0 3.1 4.1 6.3 7.0 8.6 10.6 5.4 3.1 3.9 2.0 2.9 3.8 3.3 3.6 3.7 3.6 3.1 6.1 11.1 15.3 14.9 9.3 11.3 6.4 15.3 2.0
26 8.7 7.5 7.2 8.6 10.5 7.5 5.7 2.4 2.7 4.1 1.8 3.8 4.9 5.4 4.3 3.3 3.7 2.9 4.5 4.5 4.3 4.9 4.2 4.9 5.1 10.5 1.8
27 5.2 4.1 5.1 5.0 4.3 3.5 3.3 2.3 2.7 4.0 4.1 4.7 3.5 3.9 3.5 3.9 2.0 4.3 5.1 2.6 2.2 1.9 2.5 3.2 3.6 5.2 1.9
28 2.8 3.5 2.9 2.9 2.7 3.3 2.3 3.5 3.5 2.1 2.3 2.9 3.2 4.4 4.7 3.8 1.4 3.7 2.1 1.3 2.4 2.9 4.3 2.8 3.0 4.7 1.3
29 2.7 2.9 2.8 2.6 3.1 3.3 1.7 2.9 1.6 2.3 2.7 3.1 3.3 3.0 4.1 3.8 2.9 2.9 2.9 2.4 2.4 3.9 4.6 4.1 3.0 4.6 1.6
30 4.0 5.1 5.0 3.5 2.5 4.4 5.3 4.9 ------3.4 6.3 5.1 5.0 3.5 3.7 3.2 3.0 2.0 3.2 3.0 5.4 6.2 6.2 4.3 6.3 2.0
31 5.5 7.5 9.2 10.5 8.7 11.3 10.8 11.6 12.0 11.9 11.3 11.7 11.6 11.3 10.4 8.4 9.2 6.3 7.7 5.5 8.3 11.1 12.5 11.1 9.8 12.5 5.5
MEAN 7.3 6.7 6.8 6.7 7.0 7.6 7.2 7.8 7.7 7.6 7.5 7.9 7.9 7.8 7.2 6.8 6.4 6.6 7.3 7.3 7.6 8.4 8.5 8.0 7.4
MAX 17.6 18.3 16.6 13.2 14.7 22.5 20.7 22.7 19.4 18.8 16.7 17.1 17.3 17.4 17.0 15.5 16.0 17.0 24.8 21.1 24.2 23.4 23.0 20.9 24.8
MIN 1.4 1.3 1.7 1.2 1.3 2.3 1.7 2.3 1.6 1.8 1.8 2.6 2.3 3.0 2.1 1.4 1.4 1.1 1.5 1.3 2.1 1.5 2.5 1.1 1.1
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =739 DATA RECOVERY RATE =
MONTHLY MEAN =7.4 mps
MAXIMUM WIND GUST =24.8 mps DATE OF OCCURRENCE =1/9 AT 1900 MAXIMUM DAILY MEAN =15.4 mps DATE OF OCCURRENCE =1/9
MINIMUM WIND GUST =1.1 mps DATE OF OCCURRENCE =1/1 AT 1800 MINUMUM DAILY MEAN =3.0 mps DATE OF OCCURRENCE =1/28
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
99.3%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
WIND GUST in mps for FEBRUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 12.5 10.0 13.5 17.8 18.0 8.9 10.2 8.2 9.9 11.9 9.2 11.5 11.3 9.6 8.4 9.4 7.9 8.6 10.6 12.9 10.5 10.9 7.9 4.0 10.6 18.0 4.0
2 9.9 8.4 7.5 6.6 5.0 4.5 2.2 1.7 2.7 5.2 6.4 8.7 10.4 9.4 8.9 6.7 3.9 3.6 ------------------6.2 10.4 1.7
3 ------------13.9 14.6 13.1 10.3 8.4 3.7 4.3 5.5 7.3 9.3 10.6 8.6 7.5 6.0 2.6 5.1 4.3 5.2 2.3 3.9 7.3 14.6 2.3
4 4.4 5.1 3.5 3.3 5.9 6.1 7.2 5.4 6.8 8.1 10.5 9.5 11.5 11.3 10.3 11.1 9.5 8.9 8.0 7.9 6.6 10.0 12.7 16.7 8.3 16.7 3.3
5 17.3 20.2 19.0 21.5 18.6 18.1 18.3 16.7 16.1 14.2 18.2 17.3 21.1 18.4 15.0 16.3 13.1 12.7 9.2 4.3 6.1 5.7 8.7 7.9 14.7 21.5 4.3
6 7.3 7.7 8.2 10.1 8.9 6.7 4.3 5.0 7.2 6.8 7.3 9.3 10.5 12.5 7.9 10.6 8.7 11.2 9.5 10.3 4.9 10.6 17.6 16.7 9.2 17.6 4.3
7 14.3 11.1 9.1 10.5 9.4 7.4 9.1 6.8 12.1 11.5 11.4 10.5 5.9 5.6 8.1 8.1 2.2 ------------------------------
8 ---------------------------4.1 5.0 7.4 6.0 5.2 5.3 3.2 2.3 1.6 2.1 7.1 6.7 3.4 3.4 4.9 ---------
9 7.6 3.4 3.3 3.0 3.0 3.0 2.3 3.5 1.5 2.3 3.4 4.4 4.0 4.9 5.9 4.1 5.5 2.3 3.9 3.6 3.6 4.3 4.5 6.0 3.9 7.6 1.5
10 6.3 6.4 6.3 2.8 3.5 4.8 7.3 8.8 8.6 10.7 12.0 11.1 9.3 11.5 12.5 10.7 12.3 11.1 9.1 9.7 10.7 10.8 8.0 8.2 8.8 12.5 2.8
11 7.9 7.1 5.9 7.2 6.7 1.5 1.5 3.1 2.1 3.2 4.1 4.5 5.3 4.3 3.8 4.0 3.4 2.3 3.6 4.1 4.1 4.1 3.6 3.2 4.2 7.9 1.5
12 2.3 5.4 5.2 5.6 5.5 1.9 2.7 3.5 2.9 2.3 2.8 3.9 4.3 5.7 5.1 4.0 4.1 3.8 4.6 5.0 5.5 5.5 9.3 8.6 4.6 9.3 1.9
13 9.7 10.1 9.3 10.9 8.7 9.5 4.0 6.4 6.1 9.3 9.4 11.8 12.6 11.9 11.8 10.7 7.5 6.4 3.3 3.1 1.9 3.4 3.2 3.0 7.7 12.6 1.9
14 3.0 2.6 4.7 2.5 2.2 5.7 5.3 5.6 4.1 5.9 7.7 8.2 10.1 10.1 10.1 9.0 11.9 11.9 8.9 11.3 15.2 17.5 10.6 8.8 8.0 17.5 2.2
15 12.0 14.9 15.4 17.3 16.1 12.4 8.4 6.8 12.8 15.9 13.3 10.7 5.3 5.4 9.4 6.7 8.1 3.1 5.5 5.2 5.6 5.9 7.1 6.4 9.6 17.3 3.1
16 4.7 4.8 5.0 4.2 4.5 4.4 5.1 3.9 4.2 6.2 8.7 12.3 6.1 4.7 7.6 4.7 7.0 11.1 10.2 8.2 8.3 9.5 8.3 6.6 6.7 12.3 3.9
17 7.0 5.9 5.5 5.3 5.0 4.5 4.9 4.6 4.1 3.9 3.8 4.5 10.7 11.8 9.3 7.6 7.7 4.5 6.1 7.4 7.3 7.2 8.3 4.5 6.3 11.8 3.8
18 9.2 8.1 9.0 11.7 9.7 13.6 11.1 14.4 17.3 15.9 18.4 14.9 13.1 7.9 4.3 5.1 4.3 4.3 3.9 5.6 6.1 6.3 5.4 6.2 9.4 18.4 3.9
19 9.7 10.3 9.1 8.6 11.9 13.9 12.8 13.7 10.9 15.1 18.2 14.3 13.8 10.5 12.3 15.2 16.0 15.0 9.2 3.0 5.7 3.7 ------11.5 18.2 3.0
20 4.5 4.3 3.2 2.3 2.5 3.1 3.3 5.1 5.1 5.1 11.4 15.2 14.1 10.1 8.0 7.7 5.5 5.5 6.1 6.7 8.9 12.6 16.3 15.3 7.6 16.3 2.3
21 14.8 11.9 5.4 7.0 3.1 8.0 12.4 12.9 13.7 12.5 9.6 7.5 8.2 6.0 6.4 4.0 8.2 4.0 2.8 2.6 3.0 3.6 6.9 ---7.6 14.8 2.6
22 ---------------------------2.5 2.9 3.6 3.3 5.6 4.1 8.1 4.8 2.1 4.8 4.3 5.0 4.4 4.4 4.6 ---------
23 4.1 4.8 4.2 5.1 4.4 4.5 4.0 3.4 2.4 3.3 4.9 5.3 4.9 5.9 6.0 5.7 7.3 3.8 3.5 4.5 4.0 3.7 4.0 4.7 4.5 7.3 2.4
24 5.0 5.9 6.0 5.8 4.7 3.9 6.1 6.6 4.4 7.2 9.4 9.9 10.1 7.8 4.9 6.2 6.6 4.1 4.9 5.0 8.3 11.7 10.7 10.6 6.9 11.7 3.9
25 10.9 9.8 8.3 9.6 11.0 8.8 9.9 9.5 10.1 10.2 10.9 12.6 12.2 11.8 10.1 7.7 6.7 5.7 7.9 7.3 9.5 11.7 14.4 12.9 10.0 14.4 5.7
26 7.5 11.1 10.4 11.0 8.8 7.5 7.2 10.0 13.2 14.7 16.3 13.5 11.4 12.6 13.6 15.4 13.1 12.1 13.3 13.5 16.5 21.7 17.1 14.2 12.7 21.7 7.2
27 15.5 11.9 14.2 16.8 19.2 17.5 17.3 19.9 19.1 22.8 18.6 15.2 19.7 18.5 13.8 16.2 13.5 10.1 9.0 8.0 5.0 5.0 3.9 5.6 14.0 22.8 3.9
28 5.6 6.4 8.0 6.9 5.6 7.9 8.8 10.7 8.8 7.5 8.6 8.7 7.1 7.8 8.3 7.7 6.4 3.6 3.7 4.3 5.3 5.6 9.9 10.1 7.2 10.7 3.6
29 10.3 11.5 11.4 12.9 13.3 13.7 14.7 13.9 13.6 14.9 14.1 17.3 16.4 16.3 15.3 14.6 16.7 15.9 11.9 17.7 19.1 20.1 18.7 20.0 15.2 20.1 10.3
MEAN 8.6 8.4 8.1 8.7 8.5 8.0 7.9 8.2 8.5 8.9 9.7 10.0 9.9 9.4 8.9 8.6 8.0 7.0 6.6 6.9 7.3 8.3 8.7 8.5 8.4
MAX 17.3 20.2 19.0 21.5 19.2 18.1 18.3 19.9 19.1 22.8 18.6 17.3 21.1 18.5 15.3 16.3 16.7 15.9 13.3 17.7 19.1 21.7 18.7 20.0 22.8
MIN 2.3 2.6 3.2 2.3 2.2 1.5 1.5 1.7 1.5 2.3 2.8 3.6 3.3 4.3 3.8 3.2 2.2 1.6 2.1 2.6 1.9 3.4 2.3 3.0 1.5
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =658 DATA RECOVERY RATE =
MONTHLY MEAN =8.4 mps
MAXIMUM WIND GUST =22.8 mps DATE OF OCCURRENCE =2/27 AT 1000 MAXIMUM DAILY MEAN =15.2 mps DATE OF OCCURRENCE =2/29
MINIMUM WIND GUST =1.5 mps DATE OF OCCURRENCE =2/9 AT 0900 MINUMUM DAILY MEAN =3.9 mps DATE OF OCCURRENCE =2/9
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
94.5%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
WIND GUST in mps for MARCH, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 18.2 19.8 16.9 19.4 16.8 15.5 17.3 17.5 19.3 16.7 18.7 16.9 15.8 16.0 16.7 20.2 21.3 21.2 19.7 22.9 24.3 24.8 24.3 27.4 19.5 27.4 15.5
2 26.3 28.6 32.0 33.9 28.8 29.6 27.1 26.1 27.7 28.9 31.8 19.7 20.3 22.3 12.8 14.3 16.6 15.6 7.1 6.3 4.1 6.2 7.0 8.6 20.1 33.9 4.1
3 10.4 9.8 10.8 14.6 10.7 12.0 15.5 4.7 8.4 17.2 19.8 15.3 13.5 10.4 8.9 9.5 13.4 5.7 6.8 8.5 4.7 4.4 4.3 7.5 10.3 19.8 4.3
4 8.2 8.1 9.3 9.8 10.7 12.4 12.9 11.1 7.7 5.9 5.4 7.0 7.6 8.2 10.0 9.6 10.2 7.9 4.4 3.3 4.4 3.0 3.6 4.4 7.7 12.9 3.0
5 5.9 7.2 6.9 7.1 10.3 10.9 13.4 14.4 13.6 14.8 14.5 14.0 15.9 11.3 9.5 10.3 9.8 9.1 9.3 12.7 12.3 12.9 10.9 11.1 11.2 15.9 5.9
6 10.9 11.4 10.7 12.0 10.9 11.5 8.4 5.3 3.1 3.5 6.3 6.4 4.1 4.6 5.1 3.9 2.5 1.9 3.6 3.4 4.1 3.1 3.1 3.1 6.0 12.0 1.9
7 3.2 4.1 1.6 1.3 1.1 1.3 1.3 1.3 1.7 3.2 5.4 5.4 7.1 8.2 10.2 10.3 11.0 9.2 8.3 9.8 9.8 11.1 10.4 5.2 5.9 11.1 1.1
8 2.5 2.9 3.4 2.7 3.8 2.4 3.1 3.3 4.0 4.3 5.5 9.0 9.8 9.5 9.2 9.1 9.1 8.7 7.0 6.2 4.1 4.1 4.4 3.9 5.5 9.8 2.4
9 4.4 4.0 4.4 5.0 4.4 4.6 5.1 4.8 4.3 6.1 9.9 10.9 10.2 9.5 9.6 10.2 9.7 11.4 11.1 7.3 6.4 6.3 3.3 4.7 7.0 11.4 3.3
10 6.6 9.6 11.5 10.3 12.7 10.7 9.4 10.9 11.7 14.7 15.0 15.5 15.5 14.2 13.2 15.5 15.3 15.3 11.2 6.0 5.4 5.7 6.0 9.7 11.3 15.5 5.4
11 10.6 10.8 11.1 10.9 9.1 10.5 11.2 7.9 10.2 14.3 14.1 13.0 11.8 11.2 13.1 15.3 9.6 5.9 4.1 4.0 3.0 6.7 5.3 6.5 9.6 15.3 3.0
12 7.7 7.5 13.1 13.1 11.9 8.7 4.9 4.7 4.7 9.3 9.3 7.3 5.9 4.3 5.0 4.5 5.0 5.4 5.1 ---------------7.2 13.1 4.3
13 ---------------------------------8.7 15.0 13.6 12.5 13.4 11.5 9.7 10.1 8.7 5.3 6.1 5.6 7.1 ---------
14 8.8 7.1 9.5 7.2 5.3 8.9 10.1 13.4 15.9 13.9 13.3 12.5 12.8 12.2 12.5 12.5 12.9 11.5 10.4 9.8 6.8 6.3 3.4 6.4 10.2 15.9 3.4
15 6.8 3.4 8.7 7.0 5.7 7.4 9.3 3.9 14.9 14.5 11.2 11.0 10.7 10.5 8.7 8.5 7.7 8.7 6.8 4.9 4.4 5.9 5.3 5.5 8.0 14.9 3.4
16 4.6 5.9 4.6 4.9 5.4 6.2 5.9 4.5 4.8 4.7 10.9 10.8 11.1 12.3 10.9 8.7 11.1 10.0 9.0 6.3 8.4 6.3 5.9 4.7 7.4 12.3 4.5
17 5.5 5.7 3.8 3.5 4.1 11.1 9.4 8.6 9.3 11.4 7.1 6.3 6.3 8.5 9.0 9.8 9.7 9.4 9.5 6.6 4.7 6.3 5.1 4.2 7.3 11.4 3.5
18 2.9 3.5 4.4 3.9 2.7 4.0 4.0 2.9 3.8 6.8 8.6 9.0 7.5 7.0 7.2 8.6 7.1 5.5 4.3 3.5 4.5 4.7 4.4 5.1 5.2 9.0 2.7
19 4.7 5.5 5.0 4.9 4.2 4.3 4.9 3.9 3.3 4.1 5.3 5.7 6.2 6.4 7.6 7.6 7.5 6.7 4.1 5.1 3.1 3.7 5.9 5.5 5.2 7.6 3.1
20 6.0 6.0 5.4 5.8 5.7 5.1 5.9 5.6 4.5 7.3 7.7 10.9 12.1 15.7 10.3 9.8 8.8 5.4 3.8 5.0 5.4 5.6 5.4 6.2 7.1 15.7 3.8
21 6.3 5.3 5.9 6.1 6.1 5.1 5.1 16.2 7.3 8.1 15.9 13.5 6.0 5.9 5.9 5.7 6.4 5.3 4.6 6.1 3.7 5.7 5.0 6.9 7.0 16.2 3.7
22 7.1 6.2 5.3 5.4 5.3 5.5 6.2 5.6 8.4 10.4 10.8 11.5 14.7 14.7 10.2 4.3 8.3 7.3 7.2 9.1 10.0 13.3 12.2 11.8 8.8 14.7 4.3
23 10.3 12.6 14.9 15.7 16.2 15.2 13.3 16.3 16.6 19.2 20.3 23.7 22.3 20.5 18.9 15.7 11.1 3.9 24.5 18.1 7.7 ---------16.1 24.5 3.9
24 ------------------8.2 8.7 5.6 5.3 7.4 7.4 8.4 15.2 17.1 14.5 8.7 7.1 6.1 9.2 9.5 14.0 10.7 9.2 9.6 17.1 5.3
25 8.4 10.6 8.6 10.0 6.3 10.6 5.5 9.4 6.0 4.5 8.7 11.3 11.7 11.1 6.9 10.3 9.3 2.3 10.4 4.7 6.9 5.6 3.0 2.7 7.7 11.7 2.3
26 3.7 4.5 7.8 5.9 12.1 12.4 10.1 9.1 9.6 8.8 11.6 10.6 9.2 15.4 16.3 14.3 8.4 13.9 10.0 11.1 13.4 11.9 16.1 16.0 10.9 16.3 3.7
27 14.1 14.7 3.5 6.2 6.7 5.9 5.9 5.7 6.9 9.4 11.2 12.3 11.7 11.8 11.9 14.3 14.3 14.3 12.7 11.1 9.7 8.9 7.4 14.9 10.2 14.9 3.5
28 17.6 19.2 15.2 14.9 12.7 11.9 13.9 16.6 15.4 18.2 17.8 15.2 12.5 10.8 14.0 11.4 10.3 ---------6.6 6.7 8.5 4.8 13.1 19.2 4.8
29 3.7 3.0 3.0 3.9 3.7 4.1 2.8 5.0 6.2 6.0 4.8 7.9 7.9 8.2 7.5 7.6 7.5 6.2 4.5 8.0 7.0 5.6 6.7 7.6 5.8 8.2 2.8
30 8.0 7.7 6.6 7.7 13.8 8.9 11.4 10.1 10.3 13.2 12.1 9.0 7.7 9.9 11.9 4.5 5.2 4.9 4.5 4.2 4.7 5.0 5.0 6.7 8.1 13.8 4.2
31 7.9 11.6 8.7 9.1 10.9 9.4 11.5 13.1 11.1 12.9 15.0 16.1 15.6 16.3 15.8 11.1 10.7 11.4 6.2 7.2 7.0 5.4 5.1 4.1 10.5 16.3 4.1
MEAN 8.3 8.8 8.7 9.0 8.9 9.2 9.1 9.0 9.2 10.6 11.9 11.4 11.2 11.5 10.9 10.5 10.0 8.7 8.2 7.9 7.1 7.4 7.0 7.6 9.3
MAX 26.3 28.6 32.0 33.9 28.8 29.6 27.1 26.1 27.7 28.9 31.8 23.7 22.3 22.3 18.9 20.2 21.3 21.2 24.5 22.9 24.3 24.8 24.3 27.4 33.9
MIN 2.5 2.9 1.6 1.3 1.1 1.3 1.3 1.3 1.7 3.2 4.8 5.4 4.1 4.3 5.0 3.9 2.5 1.9 3.6 3.3 3.0 3.0 3.0 2.7 1.1
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =716 DATA RECOVERY RATE =
MONTHLY MEAN =9.3 mps
MAXIMUM WIND GUST =33.9 mps DATE OF OCCURRENCE =3/2 AT 0400 MAXIMUM DAILY MEAN =20.1 mps DATE OF OCCURRENCE =3/2
MINIMUM WIND GUST =1.1 mps DATE OF OCCURRENCE =3/7 AT 0500 MINUMUM DAILY MEAN =5.2 mps DATE OF OCCURRENCE =3/19
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
96.2%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants
APPENDIX B: HOURLY TEMPERATURE DATA FOR FIRST QUARTER
2024

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
TEMPERATURE in Deg F for JANUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 33.5 32.5 32.2 32.3 31.6 30.9 30.6 31.1 33.1 37.6 36.4 38.9 38.3 39.2 40.2 38.3 35.5 32.8 32.4 31.9 30.6 30.1 29.7 33.1 33.9 40.2 29.7
2 33.2 31.2 30.1 29.0 29.5 29.9 30.5 30.6 33.0 34.4 33.3 33.9 36.1 38.0 39.8 39.0 36.1 34.4 32.9 32.6 31.8 32.7 35.0 35.1 33.4 39.8 29.0
3 34.4 35.0 34.7 35.4 36.9 37.2 35.6 35.4 38.6 38.9 39.5 ---------39.6 39.4 37.5 33.4 31.8 31.0 29.4 28.4 28.5 28.8 34.7 39.6 28.4
4 27.3 28.3 28.2 27.8 27.8 30.5 27.9 27.2 27.5 28.6 29.7 30.7 31.3 31.0 31.5 30.8 30.7 30.1 31.2 30.6 29.5 27.2 28.1 28.5 29.3 31.5 27.2
5 28.3 27.6 27.1 26.9 27.0 27.0 27.0 27.2 26.3 26.7 27.3 27.7 28.0 29.3 29.0 29.0 29.1 28.2 27.6 26.4 25.9 26.4 27.4 26.4 27.4 29.3 25.9
6 24.8 22.4 22.5 21.8 21.5 21.3 21.6 21.2 22.2 23.8 25.3 26.1 25.3 24.9 25.4 25.6 26.0 26.3 26.4 27.6 25.9 25.3 25.1 24.4 24.3 27.6 21.2
7 24.3 24.1 24.0 24.2 23.7 23.5 23.4 23.0 22.4 21.4 21.3 20.8 22.0 22.8 22.9 23.2 21.8 21.4 21.4 20.2 19.7 19.4 19.5 20.2 22.1 24.3 19.4
8 20.0 19.2 19.2 19.6 19.4 19.5 19.5 17.0 18.8 19.8 19.8 21.0 20.9 21.2 22.0 21.2 18.3 15.2 15.3 15.7 16.4 16.3 16.1 16.7 18.7 22.0 15.2
9 17.2 17.1 17.7 17.7 16.3 18.0 17.6 16.0 18.0 18.8 21.2 21.4 23.0 24.7 25.7 26.3 26.5 31.4 33.0 25.8 26.0 27.7 28.0 27.4 22.6 33.0 16.0
10 26.7 25.4 25.5 24.4 22.4 19.7 19.4 21.0 20.4 21.0 22.2 22.4 23.6 25.5 25.4 24.8 23.4 22.3 21.6 20.3 20.1 21.6 20.8 20.3 22.5 26.7 19.4
11 19.6 18.9 18.4 18.0 17.7 18.3 18.4 17.8 18.1 18.1 20.3 21.3 22.1 21.0 23.4 20.0 19.0 18.3 18.5 20.8 22.1 21.3 22.4 22.5 19.8 23.4 17.7
12 18.4 22.0 22.5 24.2 22.1 20.6 21.4 22.9 24.6 27.5 25.2 30.3 30.5 31.0 31.6 32.5 32.9 33.9 34.3 34.3 33.9 32.9 29.2 26.1 27.7 34.3 18.4
13 24.7 23.9 23.3 22.5 20.9 19.7 18.7 19.2 20.9 22.4 23.9 25.5 25.9 26.2 28.0 28.8 28.1 26.9 26.7 27.3 28.0 28.9 29.6 31.2 25.1 31.2 18.7
14 32.6 31.3 31.0 31.3 32.0 36.7 32.7 31.6 29.8 29.3 28.0 29.1 30.2 31.2 31.4 30.5 29.9 29.7 29.8 30.0 31.3 32.8 31.1 30.4 31.0 36.7 28.0
15 29.8 29.4 30.2 29.6 28.3 27.7 27.2 29.5 26.8 22.6 21.0 21.4 21.5 22.8 22.8 22.3 19.4 16.7 17.5 17.3 16.5 16.0 15.3 14.9 22.8 30.2 14.9
16 15.0 13.7 14.5 14.7 14.6 15.2 14.7 14.7 15.9 21.0 21.7 25.1 26.1 28.6 28.1 29.7 25.2 25.4 25.9 25.9 25.3 26.3 26.8 28.5 21.8 29.7 13.7
17 31.8 32.8 32.9 29.8 23.6 25.3 28.9 30.8 31.1 33.0 32.9 32.2 32.9 32.7 32.6 33.7 35.6 35.6 35.6 36.7 38.2 37.5 36.9 36.6 32.9 38.2 23.6
18 35.9 34.5 33.3 34.4 37.0 38.0 38.1 37.2 36.5 39.1 43.0 42.2 41.5 40.9 40.2 37.9 35.9 34.2 34.2 35.3 35.1 35.3 35.0 34.9 37.1 43.0 33.3
19 35.6 36.4 36.3 36.9 35.9 35.8 34.7 36.1 38.2 38.9 39.8 45.0 40.9 42.7 41.3 40.3 39.5 38.9 38.4 37.8 39.4 39.2 39.0 39.7 38.6 45.0 34.7
20 40.8 41.6 42.1 41.9 42.4 38.7 37.2 36.9 37.9 40.7 43.5 43.8 42.2 41.3 39.3 37.8 36.8 36.6 37.0 37.2 37.7 36.5 35.6 35.7 39.2 43.8 35.6
21 36.7 37.2 37.2 38.1 37.5 38.1 37.8 37.5 36.6 38.1 39.0 38.8 37.8 37.5 37.4 37.4 36.7 35.8 35.2 34.6 35.4 36.1 35.0 34.7 36.9 39.0 34.6
22 35.0 33.3 32.3 32.8 33.5 33.7 34.1 35.6 36.1 37.8 38.7 39.6 40.7 40.6 39.9 39.6 40.6 40.3 38.7 40.0 40.1 40.7 41.1 40.9 37.7 41.1 32.3
23 40.4 39.7 39.3 39.5 37.5 37.0 37.9 37.0 37.3 38.8 39.4 38.6 39.7 41.1 40.5 39.0 38.6 37.8 37.4 37.1 36.3 35.4 35.0 34.9 38.1 41.1 34.9
24 34.7 34.4 34.2 33.3 32.3 31.9 31.4 32.3 33.5 33.9 36.9 38.0 38.8 39.4 39.1 39.5 38.6 36.1 35.8 35.1 35.1 34.6 35.8 35.4 35.4 39.5 31.4
25 35.1 35.0 35.8 36.0 36.1 33.5 33.0 32.5 31.7 31.7 32.5 33.7 34.0 33.2 33.7 33.7 32.8 32.5 33.4 33.1 33.6 33.0 32.4 32.3 33.5 36.1 31.7
26 32.4 32.3 31.6 32.6 32.6 32.5 32.2 32.0 31.8 32.3 33.5 36.0 37.7 36.7 37.5 37.0 35.4 32.0 32.2 31.5 31.1 31.1 31.2 31.4 33.2 37.7 31.1
27 30.9 31.2 30.8 31.3 31.4 31.7 32.6 30.9 32.2 35.8 37.1 38.0 39.7 40.9 41.6 42.0 40.8 39.3 39.0 38.8 38.5 38.0 36.1 36.2 36.0 42.0 30.8
28 36.4 36.9 36.1 37.3 37.8 35.9 35.9 34.7 38.9 40.6 41.4 42.3 45.0 46.8 47.7 46.7 46.7 42.7 42.1 40.6 39.7 38.5 38.5 40.6 40.4 47.7 34.7
29 40.3 39.0 39.5 39.7 39.8 38.5 38.4 39.1 39.9 43.1 44.9 46.1 47.1 48.2 49.6 48.9 46.7 43.1 42.1 42.0 40.1 39.9 40.2 41.5 42.4 49.6 38.4
30 41.4 41.6 41.2 39.4 39.0 38.4 40.4 40.7 43.5 45.2 45.5 47.3 46.8 47.6 49.1 48.8 47.3 43.6 41.9 41.0 40.4 41.3 42.5 42.8 43.2 49.1 38.4
31 43.4 43.2 43.5 41.7 42.1 44.8 42.5 43.3 47.2 48.6 49.1 49.0 49.7 50.8 51.7 52.9 52.7 50.5 50.5 49.3 48.0 46.1 45.0 44.9 47.1 52.9 41.7
MEAN 31.0 30.7 30.6 30.5 30.0 30.0 29.7 29.7 30.6 31.9 32.7 33.5 34.0 34.6 35.1 34.7 33.7 32.4 32.2 31.9 31.6 31.5 31.4 31.5 31.9
MAX 43.4 43.2 43.5 41.9 42.4 44.8 42.5 43.3 47.2 48.6 49.1 49.0 49.7 50.8 51.7 52.9 52.7 50.5 50.5 49.3 48.0 46.1 45.0 44.9 52.9
MIN 15.0 13.7 14.5 14.7 14.6 15.2 14.7 14.7 15.9 18.1 19.8 20.8 20.9 21.0 22.0 20.0 18.3 15.2 15.3 15.7 16.4 16.0 15.3 14.9 13.7
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =741 DATA RECOVERY RATE =
MONTHLY MEAN =31.9 Deg F
MAXIMUM TEMPERATURE =52.9 Deg F DATE OF OCCURRENCE =1/31 AT 1600 MAXIMUM DAILY MEAN =47.1 Deg F DATE OF OCCURRENCE =1/31
MINIMUM TEMPERATURE =13.7 Deg F DATE OF OCCURRENCE =1/16 AT 0200 MINUMUM DAILY MEAN =18.7 Deg F DATE OF OCCURRENCE =1/8
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
99.6%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
TEMPERATURE in Deg F for FEBRUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 45.4 44.5 44.7 43.3 43.1 46.4 45.9 45.3 44.4 47.9 48.7 48.9 49.2 49.5 49.8 49.6 48.8 47.6 45.3 43.2 43.6 43.3 43.8 43.5 46.1 49.8 43.1
2 41.6 40.4 38.6 38.0 36.9 36.6 36.4 36.0 36.2 36.2 36.5 36.7 37.0 36.2 35.5 34.9 33.8 33.5 33.3 33.1 33.1 32.9 32.1 31.2 35.7 41.6 31.2
3 31.2 30.7 30.2 30.5 34.0 34.7 34.4 33.5 32.5 33.8 34.2 35.6 36.7 35.8 34.6 33.0 31.5 32.0 31.1 31.5 31.2 30.3 28.7 28.3 32.5 36.7 28.3
4 28.1 27.8 28.2 27.1 26.6 26.0 25.4 25.2 26.6 29.1 30.8 31.5 31.7 33.4 34.4 35.7 35.7 35.0 34.5 35.7 36.1 36.2 35.9 37.5 31.4 37.5 25.2
5 38.0 37.4 36.9 36.4 40.6 41.0 39.8 38.4 40.5 41.2 37.2 36.8 37.2 37.4 35.8 34.2 34.4 35.3 34.9 34.3 34.5 35.2 38.1 40.2 37.3 41.2 34.2
6 38.9 38.5 37.6 40.7 41.4 41.8 37.0 37.9 39.5 43.2 44.9 46.0 43.8 41.8 40.9 41.6 42.9 43.7 40.3 40.2 37.6 37.7 38.1 37.9 40.6 46.0 37.0
7 37.0 36.4 37.7 38.2 37.9 37.3 35.8 34.5 31.4 30.6 30.8 31.0 31.9 31.5 31.5 32.0 31.8 31.5 31.0 30.9 30.4 30.0 29.4 29.5 32.9 38.2 29.4
8 30.2 30.4 30.2 29.8 29.1 29.8 29.3 28.6 29.4 31.5 31.8 32.8 33.6 33.0 33.5 33.2 32.3 31.4 30.9 29.7 29.2 29.2 28.8 28.3 30.7 33.6 28.3
9 28.8 26.6 26.9 27.0 26.3 26.0 25.8 26.0 26.5 27.1 27.8 27.6 27.7 27.8 28.6 28.8 27.6 26.2 25.9 26.1 24.8 23.1 22.8 23.6 26.5 28.8 22.8
10 23.8 22.5 21.7 22.3 23.6 22.9 22.3 23.5 24.2 26.6 27.9 28.6 28.5 27.1 28.4 27.1 26.3 25.4 25.7 25.3 24.7 24.2 22.7 21.4 24.9 28.6 21.4
11 21.9 20.9 20.2 21.5 21.0 20.0 18.9 18.6 22.8 25.5 26.1 27.7 28.3 29.2 30.0 29.6 30.7 26.6 25.8 27.1 25.3 24.2 24.0 23.9 24.6 30.7 18.6
12 24.1 23.8 24.2 25.3 24.2 22.7 22.4 22.9 26.5 29.3 30.9 32.7 34.6 36.1 36.6 37.5 36.9 32.7 32.0 32.1 32.1 32.5 33.9 34.7 30.0 37.5 22.4
13 33.5 32.6 33.2 33.8 32.3 32.1 30.3 30.0 32.1 35.2 37.4 37.4 38.7 40.9 42.7 43.6 42.3 40.4 38.5 37.0 36.0 35.7 35.7 35.6 36.1 43.6 30.0
14 33.5 31.2 31.0 31.1 31.1 31.8 33.1 33.7 36.3 37.4 39.1 39.8 40.5 42.1 42.2 41.9 42.3 41.6 40.5 38.6 39.2 40.7 38.6 38.1 37.3 42.3 31.0
15 39.8 40.9 40.8 40.3 40.2 38.9 37.2 35.1 34.8 36.8 37.0 33.0 34.2 35.2 35.8 38.2 37.6 36.6 34.3 33.8 33.9 34.1 34.1 34.2 36.5 40.9 33.0
16 34.1 35.5 35.5 34.7 34.2 33.1 34.2 34.4 35.1 35.5 37.2 38.2 36.1 35.0 36.3 34.0 33.5 32.8 32.0 30.0 29.8 31.1 29.2 29.2 33.8 38.2 29.2
17 27.3 25.5 23.6 25.0 24.6 22.8 21.8 23.6 26.5 28.1 29.0 31.2 34.2 36.0 37.0 37.2 37.4 35.6 34.9 35.9 36.1 34.0 35.9 35.4 30.8 37.4 21.8
18 36.3 35.4 36.9 37.9 34.9 33.4 33.8 33.1 32.6 35.2 41.4 41.9 42.7 40.9 36.6 35.6 34.6 34.6 34.4 34.1 35.1 35.6 36.1 36.8 36.2 42.7 32.6
19 37.4 37.9 34.1 35.2 35.1 34.5 34.5 36.2 37.5 38.4 40.7 43.8 45.5 46.9 48.8 49.4 48.5 47.6 37.9 33.9 34.9 33.9 33.0 33.1 39.1 49.4 33.0
20 34.2 33.6 33.6 33.6 34.0 34.5 34.7 35.8 37.8 40.3 40.8 39.8 39.5 38.8 39.4 40.4 41.2 40.9 39.3 38.8 38.1 37.8 40.0 39.7 37.8 41.2 33.6
21 39.0 38.8 38.4 38.8 38.8 38.0 38.4 38.7 38.2 39.5 40.9 41.0 40.5 40.2 38.6 37.7 37.4 37.1 33.7 32.7 33.1 33.7 34.5 31.4 37.5 41.0 31.4
22 30.9 30.8 31.6 32.3 31.9 31.6 32.0 31.9 32.9 33.5 35.0 36.2 36.6 38.6 38.6 35.6 38.3 37.5 35.2 34.2 34.0 34.0 33.5 32.9 34.1 38.6 30.8
23 32.5 32.3 31.9 32.0 31.4 31.6 31.1 31.1 35.4 37.7 37.5 39.8 40.8 41.1 42.5 42.4 41.9 39.9 37.0 36.9 36.9 36.0 35.2 35.3 36.3 42.5 31.1
24 35.4 35.1 35.4 35.7 35.4 33.7 34.5 35.2 36.2 37.6 41.3 43.0 44.6 46.0 46.6 47.6 47.9 45.8 42.2 41.2 41.7 40.6 39.5 39.9 40.1 47.9 33.7
25 39.5 39.4 39.0 38.6 39.3 38.7 38.9 39.6 43.0 45.8 47.3 49.6 50.7 51.5 53.1 54.2 54.8 52.6 49.4 49.4 51.0 50.4 47.5 45.9 46.2 54.8 38.6
26 44.8 41.4 49.2 49.8 48.6 47.9 48.0 47.4 44.1 45.0 46.0 48.2 50.7 51.0 49.5 49.5 48.9 50.0 50.0 49.8 49.0 42.1 32.0 28.7 46.3 51.0 28.7
27 27.6 25.5 24.9 24.3 24.0 23.7 23.2 22.8 22.7 22.3 22.6 24.1 24.3 24.6 24.1 25.2 26.2 25.7 23.9 22.0 21.5 21.6 21.4 21.1 23.7 27.6 21.1
28 21.1 21.4 21.7 21.5 21.9 21.9 22.0 23.6 26.3 27.6 29.7 32.0 34.5 36.4 38.7 40.1 40.4 39.2 35.9 35.6 36.7 37.6 36.0 36.0 30.7 40.4 21.1
29 37.2 36.3 35.6 34.5 35.9 35.3 36.1 36.1 37.5 42.1 44.3 45.2 49.5 50.9 52.1 51.4 52.1 51.2 49.2 47.6 47.1 46.5 46.6 46.6 43.6 52.1 34.5
MEAN 33.6 32.9 32.9 33.1 33.0 32.7 32.3 32.4 33.4 35.2 36.4 37.3 38.1 38.4 38.7 38.7 38.5 37.6 35.8 35.2 35.1 34.6 34.0 33.8 35.2
MAX 45.4 44.5 49.2 49.8 48.6 47.9 48.0 47.4 44.4 47.9 48.7 49.6 50.7 51.5 53.1 54.2 54.8 52.6 50.0 49.8 51.0 50.4 47.5 46.6 54.8
MIN 21.1 20.9 20.2 21.5 21.0 20.0 18.9 18.6 22.7 22.3 22.6 24.1 24.3 24.6 24.1 25.2 26.2 25.4 23.9 22.0 21.5 21.6 21.4 21.1 18.6
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =696 DATA RECOVERY RATE =
MONTHLY MEAN =35.2 Deg F
MAXIMUM TEMPERATURE =54.8 Deg F DATE OF OCCURRENCE =2/25 AT 1700 MAXIMUM DAILY MEAN =46.3 Deg F DATE OF OCCURRENCE =2/26
MINIMUM TEMPERATURE =18.6 Deg F DATE OF OCCURRENCE =2/11 AT 0800 MINUMUM DAILY MEAN =23.7 Deg F DATE OF OCCURRENCE =2/27
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
100.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott C3
TEMPERATURE in Deg F for MARCH, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 50.0 48.5 46.1 43.7 43.1 42.7 42.6 42.3 42.9 45.4 46.4 48.1 51.2 51.8 52.5 54.1 54.0 52.8 52.4 51.7 51.0 50.0 49.6 48.6 48.4 54.1 42.3
2 47.8 47.1 46.4 45.8 45.1 44.3 43.5 42.7 43.3 43.6 44.4 45.2 45.2 35.7 31.1 27.9 25.1 24.7 23.6 23.0 23.3 23.8 23.7 22.7 36.2 47.8 22.7
3 21.5 24.9 25.0 22.9 22.3 22.4 22.5 23.8 24.8 29.6 28.8 27.4 27.7 29.0 30.0 29.8 29.1 28.5 28.1 27.7 26.6 25.2 24.1 23.6 26.0 30.0 21.5
4 23.5 24.6 21.2 21.0 22.6 23.0 23.3 22.9 23.7 24.4 27.8 28.0 30.6 30.1 31.1 30.7 28.6 26.4 25.4 24.2 24.0 24.3 25.5 25.6 25.5 31.1 21.0
5 25.3 24.8 26.2 25.8 26.0 27.2 28.1 29.7 28.0 27.9 29.5 33.4 35.9 37.2 39.0 40.1 40.0 38.9 37.5 36.5 36.3 39.5 40.1 40.3 33.1 40.3 24.8
6 40.2 40.8 39.8 37.3 36.0 37.0 37.8 38.1 39.5 41.5 43.5 43.7 43.0 42.8 39.8 41.4 42.0 41.5 38.9 38.2 39.1 38.9 38.7 38.0 39.9 43.7 36.0
7 37.4 35.8 33.0 32.4 32.0 31.6 31.5 32.1 32.8 33.1 32.1 32.3 34.0 34.3 35.3 33.9 33.7 34.2 33.5 33.1 31.4 29.4 30.4 28.5 32.8 37.4 28.5
8 25.3 23.3 22.2 21.2 21.0 20.2 19.3 20.4 21.6 22.4 25.5 29.1 29.9 31.8 32.8 32.4 31.9 31.1 28.7 27.8 27.3 26.8 26.3 26.1 26.0 32.8 19.3
9 25.7 25.4 24.7 24.6 24.7 24.3 22.6 24.5 28.1 30.0 32.6 35.5 38.0 40.8 42.9 44.6 44.6 43.1 41.3 38.8 38.4 39.4 41.9 40.1 34.0 44.6 22.6
10 37.4 37.6 37.8 37.5 35.8 35.6 36.0 38.2 41.7 43.5 45.6 47.9 49.4 51.2 52.9 53.5 53.0 51.5 49.6 47.5 47.3 46.9 45.0 45.2 44.5 53.5 35.6
11 45.7 43.1 43.7 42.5 41.3 40.4 40.6 41.1 43.1 46.2 47.4 48.0 49.4 47.1 45.5 42.9 44.6 42.1 39.8 39.7 38.5 39.2 40.2 40.6 43.0 49.4 38.5
12 42.1 41.1 41.8 40.5 40.4 41.3 40.4 37.9 38.4 39.5 40.1 38.5 38.5 37.9 37.2 37.9 38.1 37.4 33.4 32.2 31.2 31.3 31.2 31.7 37.5 42.1 31.2
13 33.3 30.9 31.9 31.7 30.2 30.6 29.5 28.9 29.6 29.7 32.1 32.9 31.8 34.2 33.8 32.6 32.5 30.8 29.8 29.2 28.6 28.5 28.2 27.5 30.8 34.2 27.5
14 28.1 27.2 26.9 28.5 27.3 26.4 28.3 29.9 32.7 34.3 35.1 37.1 40.0 40.8 41.6 40.5 39.4 38.4 36.5 35.4 35.4 34.6 34.2 33.0 33.8 41.6 26.4
15 32.4 32.1 31.5 30.9 30.8 30.7 30.3 31.5 33.2 35.0 37.1 39.6 42.2 44.1 45.6 45.0 45.4 44.6 40.9 39.6 39.7 39.4 42.3 39.4 37.6 45.6 30.3
16 39.6 40.1 37.2 39.1 38.2 38.4 37.1 38.6 41.1 44.4 45.4 46.7 48.6 50.7 51.8 52.1 50.9 49.6 45.2 43.2 42.3 41.9 41.3 40.9 43.5 52.1 37.1
17 40.6 40.7 40.0 40.7 40.8 41.2 40.8 41.2 43.3 45.4 48.2 50.1 51.8 53.4 53.3 53.3 52.9 51.3 48.3 46.8 44.6 44.4 43.6 41.9 45.8 53.4 40.0
18 42.2 43.5 42.1 42.4 40.1 39.6 39.7 42.6 46.6 47.6 51.0 53.0 54.7 55.5 55.6 54.7 54.6 54.4 50.8 48.3 47.2 47.2 45.6 45.7 47.7 55.6 39.6
19 46.1 45.8 45.1 45.0 43.8 43.4 43.3 45.9 49.8 50.3 52.5 54.5 55.7 56.9 56.7 56.6 56.0 54.7 50.2 48.7 47.1 46.6 46.4 47.7 49.5 56.9 43.3
20 48.4 48.3 47.8 47.8 46.7 46.5 47.1 47.9 49.8 53.2 55.3 56.9 57.9 58.3 58.7 59.1 59.2 58.1 53.3 50.5 50.3 50.9 49.8 49.8 52.2 59.2 46.5
21 49.9 49.4 49.3 50.1 50.0 49.9 49.6 49.8 48.5 50.8 50.5 52.5 53.0 54.8 54.5 54.4 54.5 54.6 49.4 47.5 46.9 45.9 46.6 45.9 50.4 54.8 45.9
22 45.7 44.3 44.3 44.8 45.0 44.7 45.5 47.5 50.4 51.0 52.4 54.3 56.7 57.8 57.1 56.2 57.0 57.4 56.9 55.5 56.2 56.2 54.1 49.0 51.7 57.8 44.3
23 51.7 49.4 45.6 44.2 47.9 48.0 46.7 46.6 49.6 52.4 52.6 52.9 52.2 49.7 47.3 44.7 41.6 42.1 39.4 34.4 32.1 31.0 30.2 30.7 44.3 52.9 30.2
24 30.8 31.3 31.9 32.2 31.0 30.7 30.5 30.5 30.6 32.4 33.8 31.5 34.9 37.2 34.9 36.3 34.1 33.4 32.7 32.1 32.4 34.5 33.0 34.1 32.8 37.2 30.5
25 34.6 34.6 32.4 31.2 31.3 30.4 30.0 31.1 31.0 31.2 32.2 35.1 36.4 37.8 38.6 37.2 33.7 35.1 32.9 29.9 30.0 30.0 29.5 30.8 32.8 38.6 29.5
26 32.1 32.9 31.3 31.0 32.9 33.3 33.0 34.3 34.1 34.7 35.2 35.6 37.2 37.7 36.9 37.3 39.4 33.6 34.0 34.1 34.6 34.4 34.1 34.3 34.5 39.4 31.0
27 34.4 33.7 32.1 31.4 30.8 30.8 30.7 34.5 35.4 36.6 37.5 39.1 40.5 41.4 41.7 42.6 44.2 43.9 42.8 41.6 41.0 41.3 41.9 42.5 38.0 44.2 30.7
28 43.4 41.6 41.3 43.6 44.4 44.1 42.8 42.6 41.5 44.8 46.2 46.1 43.1 37.5 35.2 32.9 30.2 30.7 30.9 33.0 35.5 34.1 33.4 33.5 38.9 46.2 30.2
29 34.0 32.7 33.1 32.6 33.3 32.6 32.5 33.1 35.0 36.6 38.7 41.3 42.1 44.1 45.1 45.2 44.6 44.5 43.6 42.2 39.9 39.0 38.9 39.8 38.5 45.2 32.5
30 39.8 40.2 39.3 40.0 39.2 39.7 38.9 39.7 39.7 39.3 40.7 39.9 41.7 42.9 40.7 39.9 40.7 39.8 40.8 40.7 40.7 39.6 39.5 40.1 40.1 42.9 38.9
31 40.4 39.3 39.2 38.5 38.8 37.5 35.8 34.4 35.0 36.2 37.7 40.2 41.1 41.3 41.6 40.8 39.3 36.8 32.7 32.4 32.7 32.7 32.3 32.1 37.0 41.6 32.1
MEAN 37.7 37.3 36.5 36.2 35.9 35.8 35.5 36.3 37.6 39.1 40.6 41.8 43.0 43.4 43.3 42.9 42.4 41.5 39.5 38.2 37.8 37.6 37.5 37.1 38.9
MAX 51.7 49.4 49.3 50.1 50.0 49.9 49.6 49.8 50.4 53.2 55.3 56.9 57.9 58.3 58.7 59.1 59.2 58.1 56.9 55.5 56.2 56.2 54.1 49.8 59.2
MIN 21.5 23.3 21.2 21.0 21.0 20.2 19.3 20.4 21.6 22.4 25.5 27.4 27.7 29.0 30.0 27.9 25.1 24.7 23.6 23.0 23.3 23.8 23.7 22.7 19.3
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =744 DATA RECOVERY RATE =
MONTHLY MEAN =38.9 Deg F
MAXIMUM TEMPERATURE =59.2 Deg F DATE OF OCCURRENCE =3/20 AT 1700 MAXIMUM DAILY MEAN =52.2 Deg F DATE OF OCCURRENCE =3/20
MINIMUM TEMPERATURE =19.3 Deg F DATE OF OCCURRENCE =3/8 AT 0700 MINUMUM DAILY MEAN =25.5 Deg F DATE OF OCCURRENCE =3/4
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
100.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
TEMPERATURE in Deg F for JANUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 35.6 34.9 34.9 34.9 34.3 34.2 33.6 33.4 34.8 35.7 35.7 37.7 37.2 37.3 37.8 36.9 34.6 32.7 33.1 32.8 33.2 33.9 34.6 35.5 35.0 37.8 32.7
2 35.5 33.4 32.1 30.6 32.4 32.2 32.6 33.2 34.2 34.7 32.5 33.4 35.2 36.4 37.7 37.1 36.2 36.1 34.7 35.0 34.9 34.4 34.3 35.7 34.3 37.7 30.6
3 36.5 36.2 35.0 35.3 34.5 34.6 35.2 35.9 35.1 36.8 38.2 37.6 37.7 38.1 37.5 37.3 36.1 32.4 31.3 32.4 28.1 28.6 28.5 27.6 34.4 38.2 27.6
4 27.4 27.2 27.0 27.1 26.5 28.4 26.7 26.3 26.4 27.0 27.8 28.5 28.8 29.3 29.2 29.1 28.8 28.6 29.0 28.9 28.3 26.2 26.7 27.1 27.8 29.3 26.2
5 26.7 25.8 25.7 25.7 25.6 25.5 25.7 25.7 25.1 25.8 26.3 27.1 27.2 27.2 26.6 26.6 27.2 26.6 25.6 25.1 24.8 24.7 25.2 24.9 25.9 27.2 24.7
6 22.7 22.1 22.1 22.1 22.1 22.3 22.8 21.4 21.0 22.0 23.3 24.5 24.2 23.9 24.6 25.2 25.5 26.4 27.2 27.0 25.0 25.4 24.8 24.0 23.8 27.2 21.0
7 23.7 23.1 22.9 23.1 22.9 22.5 22.3 21.6 20.7 20.3 20.0 19.5 20.0 20.1 20.2 20.2 20.0 19.2 18.7 18.4 17.9 17.5 17.5 18.7 20.5 23.7 17.5
8 19.1 17.1 16.9 18.5 18.6 18.5 19.0 18.5 18.3 17.1 17.4 18.1 18.8 19.1 18.6 18.4 17.4 16.9 16.6 16.4 16.8 18.0 18.0 17.8 17.9 19.1 16.4
9 17.9 17.2 17.3 18.6 19.0 17.7 16.9 17.8 17.9 19.7 20.2 19.8 21.1 23.6 25.8 27.1 27.2 27.9 32.0 24.7 24.4 26.0 26.6 25.9 22.2 32.0 16.9
10 24.9 23.0 23.7 23.7 22.6 20.7 19.8 19.5 20.7 19.9 19.9 21.4 24.1 24.3 23.8 23.1 22.8 21.5 20.2 19.0 18.1 19.0 19.0 18.7 21.4 24.9 18.1
11 18.3 17.5 17.0 17.0 17.6 17.5 17.0 16.7 16.6 16.7 17.6 18.3 19.1 18.7 19.7 19.3 18.3 17.6 18.6 20.6 19.7 17.3 20.0 20.7 18.2 20.7 16.6
12 20.3 20.8 21.9 20.7 17.0 21.4 24.3 25.0 26.5 27.6 28.2 28.9 29.5 29.4 30.1 30.7 31.3 32.3 33.0 32.9 32.6 31.7 28.5 23.8 27.0 33.0 17.0
13 22.6 22.3 21.3 20.0 19.0 18.3 17.6 17.5 18.5 20.7 22.7 22.9 22.9 23.7 25.6 26.7 26.1 25.4 25.7 26.2 27.2 28.3 29.1 30.8 23.4 30.8 17.5
14 39.6 37.8 34.0 31.8 33.5 33.3 32.9 33.3 30.6 30.3 27.5 26.8 29.3 29.6 29.8 29.3 28.7 28.7 28.7 31.0 32.3 31.8 30.5 29.7 31.3 39.6 26.8
15 30.0 29.3 28.8 28.5 27.8 27.0 26.3 27.6 26.6 23.1 18.9 18.4 18.7 18.8 19.5 19.4 18.6 18.0 18.7 19.2 18.5 18.7 18.8 17.8 22.4 30.0 17.8
16 19.2 17.3 18.7 20.0 19.0 17.7 18.8 18.5 22.0 22.9 23.4 27.1 28.4 28.9 28.4 28.3 27.7 26.3 25.1 25.4 28.0 30.0 31.0 31.5 24.3 31.5 17.3
17 32.7 32.3 31.7 30.6 27.0 28.6 28.6 30.6 30.5 31.4 32.8 32.4 31.5 30.9 31.3 33.6 35.5 36.0 36.2 36.4 36.7 36.2 38.2 38.3 32.9 38.3 27.0
18 36.7 32.8 33.8 35.9 38.7 39.4 39.2 37.6 37.8 37.8 38.2 38.8 38.9 38.5 37.1 36.6 35.4 35.1 35.2 34.8 35.3 35.8 35.5 36.1 36.7 39.4 32.8
19 36.2 37.0 37.7 37.7 38.2 37.8 37.4 38.0 40.1 40.7 42.7 45.0 40.0 41.9 40.7 40.4 40.4 41.1 40.0 39.3 42.9 43.8 44.3 43.1 40.3 45.0 36.2
20 43.8 42.2 41.2 40.9 40.6 39.9 37.0 38.6 44.3 44.1 44.0 42.1 40.9 40.0 37.3 36.5 37.7 36.3 36.3 37.8 38.6 38.2 37.7 38.3 39.8 44.3 36.3
21 38.2 38.4 39.1 39.0 38.6 38.7 37.7 38.0 37.6 37.8 37.5 36.9 36.9 37.4 37.3 36.2 35.6 35.5 35.2 35.4 35.9 36.1 35.3 35.6 37.1 39.1 35.2
22 34.8 34.8 33.8 33.2 34.4 34.2 34.9 35.7 35.8 35.9 37.1 38.4 38.9 38.8 39.0 38.3 39.0 39.3 37.6 37.9 38.6 39.0 39.4 39.0 37.0 39.4 33.2
23 39.8 39.8 40.5 40.2 37.4 36.2 35.8 36.5 36.7 37.7 39.0 37.7 37.3 38.1 38.2 37.4 37.2 36.3 36.0 36.2 35.4 34.4 34.7 34.8 37.2 40.5 34.4
24 34.4 33.7 32.8 32.4 31.7 30.9 30.8 32.5 33.1 32.5 34.8 35.2 35.8 38.0 37.9 37.4 35.9 35.4 35.8 36.1 35.7 34.5 35.0 36.0 34.5 38.0 30.8
25 36.4 35.2 35.4 35.5 35.6 33.6 33.1 32.4 31.1 31.2 32.1 32.7 32.8 32.5 32.4 32.3 32.0 31.3 31.3 30.9 30.6 31.4 30.6 30.6 32.6 36.4 30.6
26 30.5 30.9 29.6 30.3 30.6 30.8 30.7 29.3 30.0 31.2 32.2 34.3 35.1 34.3 34.1 34.9 34.0 32.2 31.9 31.7 31.5 31.2 31.1 31.5 31.8 35.1 29.3
27 31.0 31.8 31.2 31.7 32.3 32.2 33.0 32.5 32.9 35.1 37.6 37.3 37.7 38.7 39.0 39.0 38.6 37.8 37.4 37.8 38.1 37.7 36.5 37.4 35.6 39.0 31.0
28 38.6 37.8 38.8 40.0 40.1 36.9 35.4 36.2 40.4 40.8 41.5 42.2 44.8 45.6 44.1 44.3 45.1 43.5 42.6 41.7 40.3 40.0 41.2 44.5 41.1 45.6 35.4
29 41.3 42.2 42.6 41.9 42.5 41.7 41.2 42.1 42.6 43.8 44.4 45.0 45.3 46.1 46.6 46.5 44.5 42.7 42.4 42.3 40.6 42.0 43.8 43.7 43.2 46.6 40.6
30 43.3 43.0 42.8 42.1 41.6 40.9 41.7 43.4 ------45.1 44.8 45.6 45.9 46.6 47.0 46.0 44.3 43.1 42.5 42.5 44.6 45.9 45.9 44.0 47.0 40.9
31 45.3 45.0 45.0 44.5 44.3 44.3 44.1 44.1 45.1 46.2 46.6 47.0 47.8 48.9 50.5 51.3 51.2 49.2 49.2 48.9 48.3 47.8 47.1 46.6 47.0 51.3 44.1
MEAN 31.7 31.0 30.8 30.8 30.5 30.2 30.1 30.3 30.4 30.9 31.8 32.3 32.6 33.0 33.1 33.1 32.7 32.0 31.9 31.8 31.6 31.7 31.9 32.0 31.6
MAX 45.3 45.0 45.0 44.5 44.3 44.3 44.1 44.1 45.1 46.2 46.6 47.0 47.8 48.9 50.5 51.3 51.2 49.2 49.2 48.9 48.3 47.8 47.1 46.6 51.3
MIN 17.9 17.1 16.9 17.0 17.0 17.5 16.9 16.7 16.6 16.7 17.4 18.1 18.7 18.7 18.6 18.4 17.4 16.9 16.6 16.4 16.8 17.3 17.5 17.8 16.4
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =742 DATA RECOVERY RATE =
MONTHLY MEAN =31.6 Deg F
MAXIMUM TEMPERATURE =51.3 Deg F DATE OF OCCURRENCE =1/31 AT 1600 MAXIMUM DAILY MEAN =47.0 Deg F DATE OF OCCURRENCE =1/31
MINIMUM TEMPERATURE =16.4 Deg F DATE OF OCCURRENCE =1/8 AT 2000 MINUMUM DAILY MEAN =17.9 Deg F DATE OF OCCURRENCE =1/8
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
99.7%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
TEMPERATURE in Deg F for FEBRUARY, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 45.9 45.3 45.8 46.3 47.0 45.9 45.1 44.5 46.2 47.2 46.7 46.9 46.9 47.4 47.8 47.4 46.9 45.7 43.7 42.5 41.8 42.2 41.9 40.6 45.3 47.8 40.6
2 39.4 38.1 37.3 36.6 35.4 36.0 35.4 35.2 34.7 34.9 35.0 35.2 35.2 34.8 34.4 34.0 33.4 32.2 32.0 31.4 31.2 31.2 31.2 31.0 34.4 39.4 31.0
3 31.6 30.5 30.3 31.4 33.0 33.0 32.8 32.6 32.4 32.5 32.3 32.9 34.0 32.9 31.6 28.5 27.8 28.6 28.6 28.6 28.1 27.3 27.4 27.0 30.6 34.0 27.0
4 27.7 27.8 27.5 27.1 25.8 25.2 24.8 23.2 24.4 28.1 28.8 29.7 30.3 32.0 33.2 33.9 33.7 33.9 33.9 34.9 35.3 35.8 35.9 36.3 30.4 36.3 23.2
5 36.0 38.1 36.5 38.3 39.4 39.4 38.1 37.0 38.9 38.8 34.5 35.3 36.1 34.9 34.2 33.8 34.0 34.3 34.3 32.8 33.2 34.0 35.6 38.5 36.1 39.4 32.8
6 39.4 39.5 40.6 40.6 41.7 41.2 37.5 37.1 38.3 41.5 42.5 43.1 41.5 38.8 38.0 38.8 39.3 40.7 38.6 39.0 36.5 37.5 37.5 39.0 39.5 43.1 36.5
7 38.7 37.2 36.1 35.9 37.3 36.8 34.7 33.3 30.6 30.2 30.4 30.4 30.5 31.2 30.1 29.7 30.9 31.0 30.4 30.1 30.0 29.7 28.8 28.2 32.2 38.7 28.2
8 28.3 28.2 28.1 28.3 27.8 28.1 27.8 27.8 27.5 28.9 30.0 30.0 30.0 30.4 30.3 30.4 30.6 30.2 29.8 28.9 28.3 28.3 28.2 27.4 28.9 30.6 27.4
9 26.9 26.9 26.4 25.6 25.9 25.7 25.4 25.3 25.3 25.8 25.6 25.0 24.7 25.0 24.8 24.3 23.8 24.2 24.2 24.6 24.3 23.7 23.8 23.1 25.0 26.9 23.1
10 22.2 21.5 22.0 22.3 22.0 21.7 21.8 21.6 22.7 23.5 23.9 24.7 25.6 24.9 25.1 24.7 24.2 23.5 23.7 23.8 23.1 23.2 22.5 21.6 23.1 25.6 21.5
11 21.7 21.8 20.9 20.9 20.9 19.9 19.6 20.0 21.9 22.9 24.5 25.2 25.9 26.4 27.6 28.2 27.8 26.6 25.8 25.7 25.0 25.4 25.5 25.3 24.0 28.2 19.6
12 25.2 24.9 25.3 25.4 25.5 25.5 24.5 24.9 26.9 27.2 29.1 32.4 33.0 34.0 36.2 36.2 35.1 33.7 33.3 33.4 33.9 33.9 34.3 34.2 30.3 36.2 24.5
13 35.2 35.1 34.9 35.0 33.6 34.0 33.0 33.0 33.4 36.2 37.7 37.7 38.5 40.2 41.3 41.3 40.5 39.4 39.0 36.0 35.6 35.1 34.5 34.6 36.5 41.3 33.0
14 32.3 29.9 30.2 30.4 30.9 31.6 32.2 33.7 35.0 37.2 37.6 37.4 39.5 41.0 39.6 39.7 40.5 39.7 38.7 39.1 38.9 39.4 40.1 39.4 36.4 41.0 29.9
15 39.6 39.2 39.0 38.8 38.6 36.8 36.0 34.9 33.5 33.1 34.3 33.2 33.2 33.4 33.0 34.7 36.1 34.4 33.5 33.8 34.8 34.6 34.3 33.9 35.3 39.6 33.0
16 34.7 35.1 34.7 34.9 35.2 35.0 35.2 35.6 36.1 35.5 38.2 36.2 35.4 34.0 35.5 33.2 31.4 31.5 30.1 29.2 27.8 28.7 28.4 27.4 33.3 38.2 27.4
17 26.6 25.0 24.1 25.4 25.4 24.6 23.9 24.0 25.4 27.6 28.4 29.5 33.0 34.2 35.2 35.3 35.4 34.1 32.8 33.4 34.1 33.9 34.7 35.5 30.1 35.5 23.9
18 36.0 36.0 36.3 35.6 33.1 32.5 33.2 31.7 31.4 34.9 36.8 38.0 37.9 36.7 34.9 32.4 32.6 32.5 32.2 33.1 34.4 34.5 35.7 37.2 34.6 38.0 31.4
19 38.1 38.7 37.6 36.0 37.3 36.4 36.4 36.4 36.1 38.9 41.7 41.8 43.0 44.7 47.1 47.9 46.6 46.6 38.5 33.2 33.5 32.4 32.0 32.1 38.9 47.9 32.0
20 33.3 32.6 32.6 32.6 32.9 33.6 34.2 35.6 37.1 38.2 39.1 36.7 37.5 36.2 36.9 37.7 38.3 37.9 37.4 36.8 36.5 37.5 38.6 38.2 36.2 39.1 32.6
21 37.1 37.1 37.0 37.3 37.3 37.2 37.1 37.1 37.5 37.5 39.2 40.1 38.2 36.8 35.1 33.8 34.1 34.0 32.5 32.1 32.1 33.2 34.0 31.4 35.8 40.1 31.4
22 30.4 30.2 31.4 31.4 31.2 31.0 31.5 31.9 31.1 31.7 33.3 33.6 34.8 35.4 36.8 35.8 34.7 35.5 34.6 34.1 33.4 33.8 34.3 33.9 33.2 36.8 30.2
23 33.3 33.1 33.0 32.4 32.8 32.7 33.0 32.8 34.9 36.3 37.5 37.9 38.3 39.1 39.5 40.0 39.6 37.9 36.8 35.8 35.9 35.6 35.3 35.1 35.8 40.0 32.4
24 35.2 34.7 34.4 35.8 36.7 35.8 35.4 34.4 37.4 39.3 40.1 41.1 42.2 44.6 47.0 47.1 45.9 44.4 43.0 42.3 41.0 42.6 41.6 41.4 40.1 47.1 34.4
25 41.5 40.9 43.1 44.0 43.0 42.0 42.0 41.3 42.8 43.4 44.6 45.9 48.2 49.9 51.2 53.1 53.2 50.4 48.0 48.0 48.5 48.8 46.2 44.7 46.0 53.2 40.9
26 44.5 44.8 46.2 47.5 45.4 44.8 44.7 44.3 44.3 43.3 44.1 45.8 49.6 49.8 47.9 46.9 46.2 47.3 47.5 47.2 47.6 42.1 32.3 27.5 44.7 49.8 27.5
27 25.8 25.0 24.0 22.9 22.4 21.9 21.8 21.4 20.8 20.1 20.4 20.6 21.3 21.8 22.4 22.2 23.3 23.4 22.8 21.4 21.0 20.7 21.5 20.8 22.1 25.8 20.1
28 20.7 20.9 20.7 21.4 21.9 22.8 23.1 24.4 27.5 30.1 29.5 32.4 35.2 37.3 38.0 38.9 39.2 38.3 36.3 36.0 35.6 36.5 37.0 38.7 30.9 39.2 20.7
29 39.0 38.6 38.1 37.6 37.5 38.5 38.6 37.9 41.8 41.8 43.1 45.2 46.7 49.1 50.0 49.3 49.8 49.4 48.1 46.2 45.8 45.1 44.7 45.1 43.6 50.0 37.5
MEAN 33.3 33.0 32.9 33.0 33.0 32.7 32.4 32.2 33.0 34.0 34.8 35.3 36.1 36.4 36.7 36.5 36.4 35.9 34.8 34.3 34.0 34.0 33.7 33.4 34.2
MAX 45.9 45.3 46.2 47.5 47.0 45.9 45.1 44.5 46.2 47.2 46.7 46.9 49.6 49.9 51.2 53.1 53.2 50.4 48.1 48.0 48.5 48.8 46.2 45.1 53.2
MIN 20.7 20.9 20.7 20.9 20.9 19.9 19.6 20.0 20.8 20.1 20.4 20.6 21.3 21.8 22.4 22.2 23.3 23.4 22.8 21.4 21.0 20.7 21.5 20.8 19.6
POSSIBLE NUMBER OF OBSERVATIONS =696 ACTUAL NUMBER OF OBSERVATIONS =696 DATA RECOVERY RATE =
MONTHLY MEAN =34.2 Deg F
MAXIMUM TEMPERATURE =53.2 Deg F DATE OF OCCURRENCE =2/25 AT 1700 MAXIMUM DAILY MEAN =46.0 Deg F DATE OF OCCURRENCE =2/25
MINIMUM TEMPERATURE =19.6 Deg F DATE OF OCCURRENCE =2/11 AT 0700 MINUMUM DAILY MEAN =22.1 Deg F DATE OF OCCURRENCE =2/27
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
100.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Hi-Country
TEMPERATURE in Deg F for MARCH, 2024
Hr Beg 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hr End 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
Day
1 45.9 44.9 43.4 42.6 41.7 41.3 41.0 40.8 41.3 43.4 43.9 46.5 49.4 49.8 50.5 51.6 51.4 50.7 49.9 49.0 48.1 47.1 46.1 45.7 46.1 51.6 40.8
2 45.1 44.5 43.7 43.2 42.5 41.7 41.0 40.5 40.6 41.3 41.9 43.1 42.9 37.0 30.3 27.3 24.3 22.4 22.0 21.5 21.7 21.7 21.5 20.9 34.3 45.1 20.9
3 21.3 22.2 23.3 22.3 21.0 21.0 22.1 22.8 24.3 27.6 25.9 25.5 26.1 27.5 28.3 28.2 27.6 26.8 26.0 25.9 25.0 24.5 24.1 23.1 24.7 28.3 21.0
4 22.6 23.0 21.8 21.5 21.5 21.4 21.7 22.1 22.7 23.8 26.7 26.7 26.3 27.9 29.0 28.8 28.5 27.2 23.9 23.5 23.3 23.9 24.5 24.9 24.5 29.0 21.4
5 24.9 25.4 25.3 25.2 25.2 27.0 28.5 26.9 26.7 27.1 28.8 30.9 31.8 34.7 36.8 37.3 37.6 36.9 36.9 36.8 37.3 37.7 37.5 37.2 31.7 37.7 24.9
6 37.5 37.8 37.6 37.2 36.8 37.1 37.0 36.4 37.6 40.0 41.3 42.2 41.5 39.7 38.9 39.8 39.5 39.1 38.2 38.1 38.2 38.8 38.6 37.6 38.6 42.2 36.4
7 36.5 34.6 32.5 32.1 32.0 31.5 30.7 31.0 31.4 32.0 31.9 31.6 31.9 32.4 32.6 31.9 31.4 31.5 30.9 31.3 31.3 29.9 29.5 25.5 31.6 36.5 25.5
8 23.8 21.9 21.4 20.6 20.4 19.8 18.2 18.1 19.6 20.3 22.1 25.8 27.3 28.8 30.8 31.0 30.4 28.5 27.2 26.7 26.7 26.4 26.0 26.1 24.5 31.0 18.1
9 26.0 25.9 25.9 25.9 26.0 26.1 24.7 25.6 28.4 31.2 33.2 35.2 37.4 39.7 41.3 42.7 42.5 41.0 40.5 40.3 39.8 39.9 40.0 39.8 34.1 42.7 24.7
10 39.2 37.5 38.2 38.3 37.8 37.5 38.0 40.0 41.5 41.9 44.5 46.1 47.9 50.0 51.2 51.3 50.5 49.2 47.9 46.9 46.6 45.9 45.6 45.3 44.1 51.3 37.5
11 45.0 44.3 43.3 43.0 42.7 42.8 43.0 42.1 43.8 44.8 46.1 47.1 47.5 46.0 44.9 42.3 43.3 39.8 38.8 38.7 38.8 38.8 40.5 41.1 42.9 47.5 38.7
12 40.5 40.4 41.8 41.5 42.4 40.7 37.7 36.0 36.6 38.9 37.9 37.1 37.4 36.3 35.7 35.9 36.1 35.9 32.7 31.7 30.9 30.8 31.6 31.0 36.6 42.4 30.8
13 31.0 30.3 30.4 30.1 29.7 29.6 28.7 28.1 28.2 28.3 28.1 28.8 28.3 30.4 30.5 29.1 29.4 28.1 27.7 27.7 27.1 26.9 26.9 26.5 28.7 31.0 26.5
14 27.2 26.5 26.6 27.9 25.9 26.2 26.6 27.9 30.9 32.0 32.5 34.2 36.6 38.1 38.6 38.4 37.7 36.3 35.0 34.5 34.9 34.0 33.3 33.3 32.3 38.6 25.9
15 32.0 31.3 30.6 30.1 29.4 29.8 29.9 30.3 32.2 33.2 35.3 37.8 40.2 41.8 43.4 42.9 43.1 42.5 39.8 39.4 40.5 40.1 42.3 39.8 36.6 43.4 29.4
16 39.4 41.9 37.7 38.6 41.1 41.0 39.2 38.4 40.3 43.0 44.2 44.0 45.7 47.3 48.9 49.3 48.3 46.4 43.8 42.5 42.0 41.9 42.1 40.9 42.8 49.3 37.7
17 40.7 41.5 41.5 41.0 41.0 40.6 40.5 40.8 42.0 43.4 46.1 47.8 49.3 50.4 50.9 50.8 50.1 48.5 46.8 45.5 44.5 44.4 44.5 43.4 44.8 50.9 40.5
18 43.5 44.1 44.6 44.4 42.9 42.4 41.9 43.3 46.2 47.2 50.1 52.1 53.6 53.2 53.7 53.2 52.4 51.3 49.8 49.4 48.3 47.7 47.4 46.7 47.9 53.7 41.9
19 47.4 46.4 46.7 46.8 46.2 45.2 44.7 46.4 48.7 49.4 51.1 52.4 53.2 53.9 54.9 54.3 53.7 52.2 49.6 48.8 49.0 48.7 47.7 48.3 49.4 54.9 44.7
20 48.2 49.2 49.2 48.6 48.6 48.0 46.8 49.9 51.6 53.1 54.6 55.0 55.9 56.6 56.1 56.6 56.7 55.5 53.1 51.5 50.9 50.7 51.0 50.9 52.0 56.7 46.8
21 51.4 51.4 50.6 50.3 50.3 51.3 50.8 47.0 44.7 48.7 49.1 49.6 50.2 51.5 52.3 51.9 51.4 50.6 47.8 46.4 47.7 47.7 48.6 46.9 49.5 52.3 44.7
22 46.2 46.6 45.0 45.5 45.6 45.6 45.7 47.1 48.9 49.1 50.6 53.2 55.3 55.6 55.3 55.0 55.8 55.8 54.8 53.9 53.3 53.4 52.9 49.8 50.8 55.8 45.0
23 48.3 48.0 47.4 47.7 47.6 46.7 45.5 45.3 47.2 49.9 50.3 50.7 50.0 47.7 44.6 42.9 39.9 39.9 37.4 31.8 30.9 29.8 29.3 29.7 42.9 50.7 29.3
24 29.8 29.7 29.5 29.7 29.6 29.5 29.5 29.5 29.2 30.1 31.1 29.9 30.8 31.9 31.5 31.6 32.0 32.0 30.8 30.5 32.1 32.5 31.1 31.0 30.6 32.5 29.2
25 31.3 31.9 30.4 30.4 30.1 29.5 29.2 29.9 30.0 29.8 29.7 30.9 32.7 33.9 34.6 35.2 30.5 33.0 32.0 30.0 30.9 29.4 30.9 31.2 31.1 35.2 29.2
26 31.4 31.2 31.2 31.1 31.2 31.2 31.5 31.8 31.7 32.3 32.8 31.7 32.8 34.8 35.4 33.9 36.2 33.3 31.3 33.3 34.1 33.2 33.5 33.5 32.7 36.2 31.1
27 33.1 31.7 30.6 30.4 29.9 29.3 29.4 31.6 34.3 35.2 36.2 38.1 39.1 40.2 40.2 41.2 43.6 42.6 41.6 40.7 40.9 41.0 40.8 43.3 36.9 43.6 29.3
28 43.6 43.5 42.7 42.5 42.4 42.2 41.1 40.9 38.8 43.0 44.5 43.5 42.5 38.6 33.5 32.0 29.5 29.6 29.9 30.5 32.0 32.0 32.3 34.6 37.7 44.5 29.5
29 35.5 34.4 33.5 32.5 33.4 32.8 33.1 32.9 33.7 36.3 37.3 41.0 40.7 41.7 42.7 43.0 42.5 42.4 41.5 39.5 37.5 36.9 37.0 37.5 37.5 43.0 32.5
30 38.1 38.2 37.5 38.2 38.3 38.2 37.5 38.0 37.6 37.5 38.7 37.6 40.8 41.7 38.8 38.1 38.5 37.4 38.8 38.4 38.4 37.7 37.8 38.1 38.3 41.7 37.4
31 38.3 39.1 38.0 36.7 35.9 35.1 33.8 33.0 33.6 33.8 35.8 38.2 38.5 39.4 39.0 37.2 37.8 35.6 31.6 31.2 31.3 31.3 31.1 30.9 35.3 39.4 30.9
MEAN 36.9 36.8 36.2 36.0 35.8 35.6 35.1 35.3 36.3 37.7 38.8 39.8 40.8 41.2 41.1 40.8 40.4 39.4 38.0 37.3 37.2 36.9 37.0 36.6 37.8
MAX 51.4 51.4 50.6 50.3 50.3 51.3 50.8 49.9 51.6 53.1 54.6 55.0 55.9 56.6 56.1 56.6 56.7 55.8 54.8 53.9 53.3 53.4 52.9 50.9 56.7
MIN 21.3 21.9 21.4 20.6 20.4 19.8 18.2 18.1 19.6 20.3 22.1 25.5 26.1 27.5 28.3 27.3 24.3 22.4 22.0 21.5 21.7 21.7 21.5 20.9 18.1
POSSIBLE NUMBER OF OBSERVATIONS =744 ACTUAL NUMBER OF OBSERVATIONS =744 DATA RECOVERY RATE =
MONTHLY MEAN =37.8 Deg F
MAXIMUM TEMPERATURE =56.7 Deg F DATE OF OCCURRENCE =3/20 AT 1700 MAXIMUM DAILY MEAN =52.0 Deg F DATE OF OCCURRENCE =3/20
MINIMUM TEMPERATURE =18.1 Deg F DATE OF OCCURRENCE =3/8 AT 0800 MINUMUM DAILY MEAN =24.5 Deg F DATE OF OCCURRENCE =3/4
MEANS REQUIRE 75% VALID DATA MISSING DATA DENOTED BY ---
MEAN MAX MIN
100.0%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants
APPENDIX C: EQUIPMENT CALIBRATIONS FOR FIRST QUARTER 2024
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Site
Tisch Environmental
Jan 29, 2024 TE-5028A
Mike 2023
TE-6070V 1.04605
E -0.01956
0.0044709100 01/18/25
48.2
282 24.76
9.0 628.9
Run Orifice Qa Sampler Pf Calculated % of
Number "H2O m3/min "H2O mm Hg Po/Pa m3/min Diff
1 2.75 1.080 24.15 45.071 0.928 1.088 0.74
2 2.68 1.067 25.00 46.657 0.926 1.085 1.69
3 2.61 1.053 29.07 54.253 0.914 1.070 1.61
4 2.55 1.041 32.70 61.027 0.903 1.056 1.54
5 2.45 1.021 39.80 74.278 0.882 1.030 0.98
255.22
0.00
#DIV/0!
#DIV/0!
#DIV/0!
 #DIV/0!
NOTE: Ensure calibration orifice has been certified within 12 months of use
Tisch Environmental 145 South Miami Ave, Cleves OH 45002 ● 877.263.7610 ● sales@Ɵsch-env.com ●  www.Ɵsch-env.com
Serial #:
Average Filter Sampler (mm Hg)
VFC G‐Factor:
Enter Average Temperature During Sampling Duration (Deg F)
% Difference = (Look Up Flow‐Calibrator Flow)/Calibrator Flow*100
Enter Total Runtime in Hours (xx.xx)
Calculations
Calibrator Flow (Qa) = 1/Slope*(SQRT(H20*(Ta/Pa))‐Intercept)
Pressure Ratio (Po/Pa) = 1‐Pf/Pa
Calibration Orifice
Model:
Serial:
Qa Slope (m):
Qa Int (b):
Calibration due date:
Site and Calibration Information
Ambient Conditions
Calibration Information
Ta (deg C):
Total Flow (m3):
Enter Dirty Filter Sampler Inches of Water
Calculated Flow Rate (m3/min):
Location:
Date:
Temp (deg F):
C3
Sampler:
Tech.:
Pa (mm Hg):
Make:
Calculate Total Air Volume Using G‐Factor
Po/Pa :
Enter Clean Filter Sampler Inches of Water
Ta (deg K):
Average Temperature During Sampling Duration (Deg K)
Enter Average Barometric Pressure During Sampling Duration (In Hg)
Average Barometric Pressure During Sampling (mm Hg)
Barometric Press (in Hg):
TE‐5170V Sampler Calibration Worksheet
(Using G‐Factor)
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK C3 Date 2/16/24 Time 13:20
Sampler Model Wedding & Associates S/N A Operator Mike
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.6
Wx Cond:Light Snow and Cloud Cover
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.80 23.700 44.263 580.838 0.929 1.079 0.0651
1 2.70 25.500 47.625 577.476 0.924 1.060 0.0640
2 2.60 26.600 49.679 575.422 0.921 1.040 0.0628
3 2.50 30.400 56.776 568.325 0.909 1.020 0.0616
4 2.40 32.900 61.446 563.656 0.902 1.000 0.0604
Operational Flow Rate 18.0 33.618 591.484 0.9462
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.079 1.084 0.5% -4.5%
1.060 1.0735 1.3%
1.040 1.067 2.6%
1.020 1.0416 2.1%
1.000 1.0267 2.6%
1.8%
Sampler Calibration Relationship
1.1185 Lookup Table Validated (I.e., % difference ≤4)
1.1227 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =5.877 b =0.54804 r =0.98350
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1185 m
3/min (Look-up Table) or 1.1227 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK C3 Date 2/16/24 Time 13:35
Sampler Model Wedding & Associates S/N B Operator Mike
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.6
Wx Cond:Light Snow and Cloud Cover
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.83 23.700 44.263 580.838 0.929 1.085 0.0655
1 2.75 25.000 46.691 578.410 0.925 1.069 0.0645
2 2.61 28.200 52.668 572.434 0.916 1.042 0.0629
3 2.46 31.600 59.018 566.084 0.906 1.012 0.0611
4 2.30 35.900 67.049 558.053 0.893 0.980 0.0591
Operational Flow Rate 17.8 33.244 591.857 0.9468
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.085 1.087 0.2% -4.0%
1.069 1.0776 0.8%
1.042 1.056 1.3%
1.012 1.0319 1.9%
0.980 1.0005 2.1%
1.3%
Sampler Calibration Relationship
1.1243 Lookup Table Validated (I.e., % difference ≤4)
1.1325 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =5.784 b =0.55148 r =0.99876
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1243 m
3/min (Look-up Table) or 1.1325 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK C3 Date 2/16/24 Time 13:54
Sampler Model Wedding & Associates S/N C Operator Mike
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.6
Wx Cond:Light Snow and Cloud Cover
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.93 24.100 45.010 580.091 0.928 1.103 0.0666
1 2.87 26.400 49.306 575.796 0.921 1.092 0.0659
2 2.80 28.500 53.228 571.873 0.915 1.079 0.0651
3 2.73 30.300 56.590 568.512 0.909 1.066 0.0643
4 2.65 32.900 61.446 563.656 0.902 1.050 0.0634
Operational Flow Rate 19.2 35.859 589.243 0.9426
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.103 1.083 -1.9% -2.4%
1.092 1.0659 -2.4%
1.079 1.051 -2.5%
1.066 1.0369 -2.7%
1.050 1.0199 -2.9%
-2.5%
Sampler Calibration Relationship
1.1135 Lookup Table Validated (I.e., % difference ≤4)
1.1351 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =8.000 b =0.39458 r =0.99795
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1135 m
3/min (Look-up Table) or 1.1351 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK C3 Date 2/16/24 Time 14:00
Sampler Model Wedding & Associates S/N D Operator Mike
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.6
Wx Cond:Light Snow and Cloud Cover
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.92 23.800 44.450 580.651 0.929 1.101 0.0665
1 2.85 25.300 47.251 577.850 0.924 1.088 0.0657
2 2.75 27.400 51.174 573.928 0.918 1.069 0.0645
3 2.63 30.200 56.403 568.698 0.910 1.046 0.0631
4 2.53 33.600 62.753 562.348 0.900 1.026 0.0619
Operational Flow Rate 18.3 34.178 590.923 0.9453
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.101 1.089 -1.2% -2.5%
1.088 1.0776 -1.0%
1.069 1.064 -0.5%
1.046 1.0464 0.0%
1.026 1.0241 -0.2%
-0.6%
Sampler Calibration Relationship
1.1219 Lookup Table Validated (I.e., % difference ≤4)
1.1425 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =6.343 b =0.50795 r =0.99585
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1219 m
3/min (Look-up Table) or 1.1425 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 2/16/24 Time 14:10
Sampler Model Tisch TE-6070V S/N E Operator Mike
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.6
Wx Cond:Light snow and cloud cover VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.88 23.500 43.890 581.210 0.930 1.094 0.0660
1 2.81 25.600 47.812 577.288 0.924 1.081 0.0652
2 2.76 27.800 51.921 573.179 0.917 1.071 0.0647
3 2.71 30.100 56.216 568.884 0.910 1.062 0.0641
4 2.65 33.500 62.566 562.534 0.900 1.050 0.0634
Operational Flow Rate 18.0 33.618 591.482 0.9462
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.094 1.077 -1.55% -4.7%
1.081 1.069 -1.11%
1.071 1.061 -0.93%
1.062 1.053 -0.85%
1.050 1.040 -0.95%
-1.1%
Sampler Calibration Relationship
1.0968 Using G-Factor (I.e., % difference ≤4)
1.1157 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =11.325 b =0.18370 r =0.99292
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.0968 m
3/min (Look-up Table) or 1.1157 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.00447091
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 3/20/24 Time 14:00
Sampler Model Tisch TE-6070V S/N P7953 Unit A Operator Mike
Pa(mm Hg)622.6 Ta (°C)15.0 Ta (°K)288.2
Wx Cond:Sunny warm and breezy.VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.75 20.600 38.474 584.076 0.938 1.097 0.0646
1 2.70 21.600 40.341 582.209 0.935 1.087 0.0641
2 2.65 24.740 46.206 576.344 0.926 1.077 0.0635
3 2.60 27.770 51.865 570.685 0.917 1.067 0.0629
4 2.50 31.080 58.046 564.504 0.907 1.047 0.0617
Operational Flow Rate 20.2 37.726 584.824 0.9394
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.097 1.111 1.18% -1.7%
1.087 1.107 1.84%
1.077 1.095 1.67%
1.067 1.084 1.50%
1.047 1.071 2.29%
1.7%
Sampler Calibration Relationship
1.1121 Using G-Factor (I.e., % difference ≤4)
1.0976 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =11.322 b =0.20733 r =0.98848
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1121 m
3/min (Look-up Table) or 1.0976 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.00455696
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 3/20/24 Time 14:12
Sampler Model Tisch TE-6070V S/N P7958 Unit B Operator Mike
Pa(mm Hg)622.6 Ta (°C)15.0 Ta (°K)288.2
Wx Cond:Sunny warm and breezy.VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.80 21.630 40.397 582.153 0.935 1.107 0.0652
1 2.75 23.060 43.068 579.482 0.931 1.097 0.0646
2 2.70 25.060 46.803 575.747 0.925 1.087 0.0641
3 2.65 28.440 53.116 569.434 0.915 1.077 0.0635
4 2.60 31.390 58.625 563.925 0.906 1.067 0.0629
Operational Flow Rate 20.5 38.193 584.357 0.9387
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.107 1.109 0.18% -1.9%
1.097 1.103 0.55%
1.087 1.096 0.83%
1.077 1.083 0.56%
1.067 1.072 0.47%
0.5%
Sampler Calibration Relationship
1.1133 Using G-Factor (I.e., % difference ≤4)
1.1090 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =12.823 b =0.10092 r =0.98819
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1133 m
3/min (Look-up Table) or 1.1090 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.00638986
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 3/20/24 Time 14:20
Sampler Model Tisch TE-6070V S/N P7959 Unit C Operator Mike
Pa(mm Hg)622.6 Ta (°C)15.0 Ta (°K)288.2
Wx Cond:Sunny warm and breezy.VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.76 21.620 40.379 582.171 0.935 1.099 0.0648
1 2.70 23.560 44.002 578.548 0.929 1.087 0.0641
2 2.65 27.060 50.539 572.011 0.919 1.077 0.0635
3 2.60 29.660 55.394 567.156 0.911 1.067 0.0629
4 2.50 35.810 66.880 555.670 0.893 1.047 0.0617
20.7600 38.7724 583.7776 0.937720098
Operational Flow Rate 20.5 38.193 584.357 0.9387
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.099 1.109 0.91% -1.8%
1.087 1.102 1.38%
1.077 1.089 1.02%
1.067 1.079 1.12%
1.047 1.056 0.86%
1.1%
Sampler Calibration Relationship
1.1137 Using G-Factor (I.e., % difference ≤4)
1.1011 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =14.200 b =0.01753 r =0.99582
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1137 m
3/min (Look-up Table) or 1.1011 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.00676369
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 2/28/24 Time 13:00
Sampler Model Tisch TE-6070V S/N D Operator CP
Pa(mm Hg)625.9 Ta (°C)2.0 Ta (°K)275.1
Wx Cond:Sunny and with light wind VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.91 21.450 40.061 585.869 0.936 1.100 0.0663
1 2.83 23.450 43.796 582.134 0.930 1.085 0.0654
2 2.80 25.210 47.083 578.847 0.925 1.079 0.0651
3 2.75 29.480 55.058 570.872 0.912 1.070 0.0645
4 2.68 35.060 65.480 560.450 0.895 1.056 0.0637
Operational Flow Rate 16.9 31.507 594.423 0.9497
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.100 1.103 0.27% -2.4%
1.085 1.095 0.92% -3.1%
1.079 1.089 0.83% -3.7%
1.070 1.073 0.28% -5.1%
1.056 1.052 -0.38% -6.9%
0.4%
Sampler Calibration Relationship
1.1196 Using G-Factor (I.e., % difference ≤4)
1.1092 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =15.927 b =-0.11545 r =0.96956
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1196 m
3/min (Look-up Table) or 1.1092 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.02030635
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 10:25
Sampler Model Tisch Environmental S/N A Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.90 23.900 44.637 568.063 0.927 1.110 0.0669
1 2.85 27.340 51.061 561.639 0.917 1.101 0.0663
2 2.80 28.850 53.882 558.818 0.912 1.091 0.0658
3 2.75 28.800 53.788 558.912 0.912 1.082 0.0652
4 2.70 31.840 59.466 553.234 0.903 1.072 0.0646
Operational Flow Rate 17.9 33.338 579.363 0.9456
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.110 1.097 -1.2%-1.7%
1.101 1.087 -1.3%
1.091 1.082 -0.9%
1.082 1.082 0.0%
1.072 1.073 0.1%
-0.7%
Sampler Calibration Relationship
1.1200 Lookup Table Validated (I.e., % difference ≤4)
1.1483 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =9.153 b =0.31240 r =0.95040
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1200 m
3/min (Look-up Table) or 1.1483 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 10:43
Sampler Model Tisch Environmental S/N B Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.80 23.580 44.039 568.661 0.928 1.091 0.0658
1 2.75 24.750 46.224 566.476 0.925 1.082 0.0652
2 2.70 29.450 55.002 557.698 0.910 1.072 0.0646
3 2.65 33.060 61.744 550.956 0.899 1.062 0.0640
4 2.60 36.060 67.347 545.353 0.890 1.052 0.0634
Operational Flow Rate 19.1 35.728 576.972 0.9417
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.091 1.088 -0.3% -3.4%
1.082 1.084 0.2%
1.072 1.070 -0.2%
1.062 1.059 -0.3%
1.052 1.05 -0.2%
-0.2%
Sampler Calibration Relationship
1.1050 Lookup Table Validated (I.e., % difference ≤4)
1.1021 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =17.262 b =-0.20442 r =0.98898
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1050
m3/min (Look-up Table) or 1.1021 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 10:53
Sampler Model Tisch Environmental S/N C Operator: Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast and breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 0.99995 0.99997
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.90 23.600 44.076 568.624 0.928 1.110 0.0669
1 2.85 26.770 49.997 562.703 0.918 1.101 0.0663
2 2.80 29.080 54.311 558.389 0.911 1.091 0.0658
3 2.75 31.450 58.738 553.963 0.904 1.082 0.0652
4 2.70 34.010 63.519 549.181 0.896 1.072 0.0646
Operational Flow Rate 19.6 36.513 576.188 0.9404
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.110 1.092 -1.7% -1.7%
1.101 1.082 -1.7%
1.091 1.075 -1.5%
1.082 1.068 -1.3%
1.072 1.06 -1.1%
-1.5%
Sampler Calibration Relationship
1.1060 Lookup Table Validated (I.e., % difference ≤4)
1.1269 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =13.466 b =0.02627 r =0.99813
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1060 m
3/min (Look-up Table) or 1.1269 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 11:04
Sampler Model Tisch Environmental S/N D Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast and breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.90 23.600 44.076 568.624 0.928 1.110 0.0669
1 2.85 25.600 47.812 564.888 0.922 1.101 0.0663
2 2.80 28.000 52.294 560.406 0.915 1.091 0.0658
3 2.75 32.050 59.858 552.842 0.902 1.082 0.0652
4 2.70 33.030 61.688 551.012 0.899 1.072 0.0646
Operational Flow Rate 19.1 35.691 577.009 0.9417
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.110 1.095 -1.4% -1.7%
1.101 1.089 -1.1%
1.091 1.082 -0.9%
1.082 1.069 -1.2%
1.072 1.066 -0.6%
-1.0%
Sampler Calibration Relationship
1.1120 Lookup Table Validated (I.e., % difference ≤4)
1.1268 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =13.368 b =0.03436 r =0.98672
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1120 m
3/min (Look-up Table) or 1.1268 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 11:14
Sampler Model Tisch Environmental S/N E Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.85 23.220 43.367 569.333 0.929 1.101 0.0663
1 2.80 24.240 45.272 567.428 0.926 1.091 0.0658
2 2.75 28.070 52.425 560.275 0.914 1.082 0.0652
3 2.70 29.660 55.394 557.306 0.910 1.072 0.0646
4 2.65 32.400 60.512 552.188 0.901 1.062 0.0640
Operational Flow Rate 18.3 34.159 578.541 0.9442
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.101 1.101 0.0% -2.6%
1.091 1.106 1.3%
1.082 1.086 0.4%
1.072 1.081 0.8%
1.062 1.073 1.0%
0.7%
Sampler Calibration Relationship
1.1190 Lookup Table Validated (I.e., % difference ≤4)
1.1193 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =12.450 b =0.10473 r =0.98809
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1190 m
3/min (Look-up Table) or 1.1193 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 11:23
Sampler Model Tisch Environmental S/N F Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast breezy flurries
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.95 23.550 43.983 568.717 0.928 1.120 0.0675
1 2.90 24.660 46.056 566.644 0.925 1.110 0.0669
2 2.85 28.550 53.321 559.379 0.913 1.101 0.0663
3 2.80 30.100 56.216 556.484 0.908 1.091 0.0658
4 2.75 32.480 60.661 552.039 0.901 1.082 0.0652
Operational Flow Rate 19.5 36.363 576.337 0.9407
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.120 1.082 -3.4% -0.9%
1.110 1.079 -2.8%
1.101 1.067 -3.1%
1.091 1.062 -2.7%
1.082 1.055 -2.5%
-2.9%
Sampler Calibration Relationship
1.0980 Lookup Table Validated (I.e., % difference ≤4)
1.1352 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =12.417 b =0.09153 r =0.98768
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.0980 m
3/min (Look-up Table) or 1.1352 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 11:33
Sampler Model Tisch Environmental S/N G Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast breezy snow flurries
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99950
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.95 23.700 44.263 568.437 0.928 1.120 0.0675
1 2.90 24.910 46.523 566.177 0.924 1.110 0.0669
2 2.85 27.910 52.126 560.574 0.915 1.101 0.0663
3 2.80 30.750 57.430 555.270 0.906 1.091 0.0658
4 2.75 33.580 62.716 549.984 0.898 1.082 0.0652
Operational Flow Rate 20.0 37.353 575.347 0.9390
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.120 1.097 -2.0% -0.9%
1.110 1.093 -1.6%
1.101 1.084 -1.5%
1.091 1.075 -1.5%
1.082 1.067 -1.4%
-1.6%
Sampler Calibration Relationship
1.1110 Lookup Table Validated (I.e., % difference ≤4)
1.1312 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =13.649 b =0.00887 r =0.99248
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1110 m
3/min (Look-up Table) or 1.1312 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
Station Location RTK Hi Country Date 2/16/24 Time 11:44
Sampler Model Tisch Environmental S/N H Operator Mike
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.6
Wx Cond:Overcast and breezy
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.85 21.640 40.416 572.284 0.934 1.101 0.0663
1 2.80 23.500 43.890 568.810 0.928 1.091 0.0658
2 2.75 25.820 48.223 564.477 0.921 1.082 0.0652
3 2.70 29.890 55.824 556.876 0.909 1.072 0.0646
4 2.65 36.300 67.796 544.904 0.889 1.062 0.0640
Operational Flow Rate 19.5 36.419 576.281 0.9406
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Lookup Table)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.101 1.100 -0.1% -2.6%
1.091 1.093 0.1%
1.082 1.086 0.4%
1.072 1.074 0.2%
1.062 1.054 -0.8%
0.0%
Sampler Calibration Relationship
1.1090 Lookup Table Validated (I.e., % difference ≤4)
1.1032 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =18.718 b =-0.30347 r =0.96862
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1090 m
3/min (Look-up Table) or 1.1032 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Operator
Site Name C3
Project
YES NO N/A Comments
X
X
X
X
X
X Cleaned out some bugs and debris
X
X
X
X
X
X
X
X
Sensors Level and Oriented Correctly
23-19
Met sensor calibration verification
Boom Orientation OK
Sensor Outputs Check and Functioning Correctly
Grounding System Intact
Cellular Antenna Correctly Oriented
Area Free of Vandalism
1/3/2024
Wind Sensors Intact (Propeller, Cups, Vane)
Temperature Aspirators Operational
Pyranometer Domes Clean
Rain Gauge Funnel Clear of Debris/Snow/Ice
Time 11:00
MET TOWER AND SENSORS:
Solar Panel Clean
Tower straight, guy wires taut, secured
C3 Stn ID
SITE VISIT CHECKLIST
Trinity Date
Signs of Sensor Damage
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/03/2024 Start Time 11:00
PROJECT Stop Time 13:20
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model:
Sensor Range:°C Sensor Ht Serial Number
10 164016000096C7
CALIBRATION EQUIPMENT
Calibration Device: Certification Date:
Calibration Device Model:
Calibration Device s/n:
10 METER
RESPONSE DIFF
Time (°C) (°C) (°C)
41.0 41.4 0.4
18.8 19.1 0.3
-0.1 0.1 0.2
Calibration Criteria: +/- 0.5 C from CAL input
COMMENTS
= cell containing equations
12:43
CALIBRATION INPUT
Mike PetersonCalibrated By:
13:01
12:53
Side by side comparison in water bath temperature
mediums.
EE Elektronic 8/3/2023
TEMPERATURE
AS FOUND
C3
23-19
Trinity
082818046
EE181
-50 to 50 degrees
REO Temp 2/3/2023
TM99-A
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/03/2024 Start Time 11:00
PROJECT Stop Time 13:20
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n: Declination:
Sensor Range:°Alignment:
Vane to Crossarm: Difference:
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model: Compass:
Calibration Device s/n:Torque Device:
INPUT
RESPONSE DIFF TOTAL DIFF RESPONSE DIFF TOTAL DIFF
(°) (°) (°) (°) (°) (°) (°)
North 0/360 0.1 0.1 -0.9 0.1 0.1 -0.9
30 30.6 0.6 -0.4 31.0 1.0 0.0
60 61.3 1.3 0.3 61.1 1.1 0.1
East 90 90.4 0.4 -0.6 90.9 0.9 -0.1
120 119.1 -0.9 -1.9 120.4 0.4 -0.6
150 148.3 -1.7 -2.7 148.8 -1.2 -2.2
South 180 178.0 -2.0 -3.0 178.1 -1.9 -2.9
210 208.1 -1.9 -2.9 208.0 -2.0 -3.0
240 237.5 -2.5 -3.5 237.8 -2.2 -3.2
West 270 268.0 -2.0 -3.0 267.7 -2.3 -3.3
300 298.2 -1.8 -2.8 297.8 -2.2 -3.2
330 329.4 -0.6 -1.6 329.2 -0.8 -1.8
COMMENTS
= cell containing equationsCalibrated By:
C3
23-19
Trinity
11.0
-1.0
Calibration Criteria: Alignment with true North plus Linearity: +/- 5 degrees
Starting Threshold: <=0.5m/s
TOTAL DIFF is the total difference when including Orientation and Linearity
<0.5 m/s
0.0
1.4/181.1
Brunton SN: 5100715063
RM Young 18331
TOTAL DIFF is the total difference when including
Orientation and Linearity
WIND DIRECTION 10M
Mike Peterson
18212
Vane Angle Fixture
05305-AQ
146853
0-360
1/30/2023
8/3/2023RM Young
CLOCKWISE COUNTER-CLOCKWISE
AS FOUND
Torque was approaching tolerance. Will replace bearings
and re-check.
RM Young
<10.0 gm-cm
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/03/2024 Start Time 11:00
PROJECT Stop Time 13:20
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n: Declination:
Sensor Range:°Alignment:
Vane to Crossarm: Difference:
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model: Compass:
Calibration Device s/n:Torque Device:
INPUT
RESPONSE DIFF TOTAL DIFF RESPONSE DIFF TOTAL DIFF
(°) (°) (°) (°) (°) (°) (°)
North 0/360 1.0 1.0 0.0 1.3 1.3 0.3
30 31.3 1.3 0.3 31.0 1.0 0.0
60 61.7 1.7 0.7 61.2 1.2 0.2
East 90 90.8 0.8 -0.2 91.1 1.1 0.1
120 119.8 -0.2 -1.2 120.2 0.2 -0.8
150 148.6 -1.4 -2.4 149.0 -1.0 -2.0
South 180 180.0 0.0 -1.0 178.9 -1.1 -2.1
210 208.5 -1.5 -2.5 208.7 -1.3 -2.3
240 238.5 -1.5 -2.5 238.4 -1.6 -2.6
West 270 268.1 -1.9 -2.9 268.7 -1.3 -2.3
300 298.4 -1.6 -2.6 298.3 -1.7 -2.7
330 329.3 -0.7 -1.7 330.8 0.8 -0.2
COMMENTS
= cell containing equations
0.7/180.0 -1.0
WIND DIRECTION 10M (2)
AS LEFT
C3
23-19
Trinity
RM Young 8/3/2023
05305-AQ
146853 11.0
0-360 0.0
<10.0 gm-cm
<0.5 m/s
RM Young 1/30/2023
18212 Brunton SN: 5100715063
Mike PetersonCalibrated By:
Vane Angle Fixture RM Young 18331
CLOCKWISE COUNTER-CLOCKWISE
Calibration Criteria: Alignment with true North plus Linearity: +/- 5 degrees
Starting Threshold: <=0.5m/s
TOTAL DIFF is the total difference when including Orientation and Linearity
TOTAL DIFF is the total difference when including
Orientation and Linearity Replaced bearings.
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/03/2024 Start Time 11:00
PROJECT Stop Time 13:20
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n:
Sensor Range:m/s
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model:Torque Device:
Calibration Device s/n:
RPM
COMMENTS
= cell containing equations
AS FOUND
18802
0.000
WIND SPEED 10M
11/13/2023
8/3/2023RM Young
0.0000
300
C3
23-19
Trinity
CALIBRATION INPUT
600
0.000
0.2 gm-cim
<0.5 mps
1.536
3.072
9.216
0.000
Prop disc #18310
SENSOR RESPONSE DIFFERENCE
(m/s)
0.000
CA4868
05305-AQ
146853
0-60
RM Young
(m/s)
0.000
Mike Peterson
20.48020.480
Will replace bearings for maint and recheck.
Calibration Criteria: +/- 0.25 m/s when wind speed <= 5m/s
+/- 5% when ws > 5m/s
0.000
Calibrated By:
2500 12.800
1800
1.536
3.072
4000
(m/s)
8000 40.960 40.960 0.000
6000 30.720 30.720 0.000
12.800
0.000
9.216
900 4.608 4.608 0.000
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/03/2024 Start Time 11:00
PROJECT Stop Time 13:20
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n:
Sensor Range:m/s
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model:Torque Device:
Calibration Device s/n:
RPM
COMMENTS
= cell containing equations
RM Young 11/13/2023
WIND SPEED 10M (2)
AS LEFT
C3
23-19
Trinity
RM Young 8/3/2023
05305-AQ
146853
0-60
0.2 gm-cim
<0.5 mps
18802 Prop disc #18310
CA4868
CALIBRATION INPUT SENSOR RESPONSE DIFFERENCE
(m/s) (m/s) (m/s)
0 0.000 0.000 0.000
300 1.536 1.536 0.000
600 3.072 3.072 0.000
900 4.608 4.608 0.000
1800 9.216 9.216 0.000
2500 12.800 12.800 0.000
4000 20.480 20.480 0.000
Calibration Criteria: +/- 0.25 m/s when wind speed <= 5m/s
+/- 5% when ws > 5m/s
Replaced bearings.
Mike PetersonCalibrated By:
6000 30.720 30.720 0.000
8000 40.960 40.960 0.000
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Operator
Site Name HC
Project
YES NO N/A Comments
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Sensors Level and Oriented Correctly
244501.0030
Met sensor calibration verification
Boom Orientation OK
Sensor Outputs Check and Functioning Correctly
Grounding System Intact
Cellular Antenna Correctly Oriented
Area Free of Vandalism
1/30/2024
Wind Sensors Intact (Propeller, Cups, Vane)
Temperature Aspirators Operational
Pyranometer Domes Clean
Rain Gauge Funnel Clear of Debris/Snow/Ice
Time 8:30
MET TOWER AND SENSORS:
Solar Panel Clean
Tower straight, guy wires taut, secured
HC Stn ID
SITE VISIT CHECKLIST
Trinity Date
Signs of Sensor Damage
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/30/2024 Start Time 08:30
PROJECT Stop Time 10:00
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model:
Sensor Range:°C Sensor Ht Serial Number
10 192916000065B5
CALIBRATION EQUIPMENT
Calibration Device: Certification Date:
Calibration Device Model:
Calibration Device s/n:
10 METER
RESPONSE DIFF
Time (°C)(°C)(°C)
Calibration Criteria: +/- 0.5 C from CAL input
COMMENTS
= cell containing equations
09:30
CALIBRATION INPUT
Mike PetersonCalibrated By:
09:45
Side by side comparison in water bath temp mediums.
09:40
EE Elektronic 8/3/2023
TEMPERATURE
AS FOUND
HC
244501.0030
Trinity
C404690
EE181
-50 to 50 degrees
Brooklyn Digital 1/17/2024
6661S
0.0
-0.2
0.2
41.1
20.0
0.0
41.1
19.8
0.2
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/30/2024 Start Time 08:30
PROJECT Stop Time 10:00
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n: Declination:
Sensor Range:°Alignment:
Vane to Crossarm: Difference:
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model: Compass:
Calibration Device s/n:Torque Device:
INPUT
RESPONSE DIFF TOTAL DIFF RESPONSE DIFF TOTAL DIFF
(°)(°)(°)(°)(°)(°)(°)
North 0/360 0.2 0.2 -0.8 0.2 0.2 -0.8
30 28.7 -1.3 -2.3 28.7 -1.3 -2.3
60 58.5 -1.5 -2.5 58.5 -1.5 -2.5
East 90 88.7 -1.3 -2.3 88.4 -1.6 -2.6
120 118.9 -1.1 -2.1 118.9 -1.1 -2.1
150 148.5 -1.5 -2.5 148.4 -1.6 -2.6
South 180 178.7 -1.3 -2.3 179.5 -0.5 -1.5
210 209.2 -0.8 -1.8 209.5 -0.5 -1.5
240 239.3 -0.7 -1.7 239.5 -0.5 -1.5
West 270 270.0 0.0 -1.0 270.0 0.0 -1.0
300 300.9 0.9 -0.1 300.9 0.9 -0.1
330 331.7 1.7 0.7 331.7 1.7 0.7
COMMENTS
= cell containing equationsCalibrated By:
HC
244501.0030
Trinity
11.0
-1.0
Calibration Criteria: Alignment with true North plus Linearity: +/- 5 degrees
Starting Threshold: <=0.5m/s
TOTAL DIFF is the total difference when including Orientation and Linearity
<0.5 m/s
359.0
1.3/181.8||0.2/180.5
Brunton SN: 5100715063
Waters 366-1M sn3950
TOTAL DIFF is the total difference when including
Orientation and Linearity
WIND DIRECTION 10M
Mike Peterson
040 Dir Template
Vane Angle Fixture
020C
Faded
0-360
1/19/2023
8/3/2023Met One
CLOCKWISE COUNTER-CLOCKWISE
AS FOUND
Met One
<5 gm-cm
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
CALIBRATION SHEET
SITE NAME Date 01/30/2024 Start Time 08:30
PROJECT Stop Time 10:00
SITE OPERATOR
Sensor Mfg: Last Calibration Date:
Sensor Model: Sensor Height:10 meters
Sensor s/n:
Sensor Range:m/s
Rotational Torque:
CALIBRATION EQUIPMENT Starting Threshold:
Calibration Device: Certification Date:
Calibration Device Model:Torque Device:
Calibration Device s/n:
RPM
COMMENTS
= cell containing equations
AS FOUND
18802
0.000
WIND SPEED 10M
5/25/2023
8/3/2023Met One
0.0000
200
HC
244501.0030
Trinity
CALIBRATION INPUT
300
0.000
<0.2 gm-cm
<0.5 mps
5.607
8.270
24.260
0.007
Waters 366-3M sn3618
SENSOR RESPONSE DIFFERENCE
(m/s)
0.000
CA5428
010C
Faded
0-50
RM Young
(m/s)
0.000
Mike Peterson
40.25040.250
Calibration Criteria: +/- 0.25 m/s when wind speed <= 5m/s
+/- 5% when ws > 5m/s
0.000
Calibrated By:
1200 32.250
900
5.600
8.270
1500
(m/s)
1800 48.240 48.240 0.000
32.250
0.000
24.260
600 16.260 16.260 0.000
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants
APPENDIX D: PM10 MONTHLY FLOW CHECKS FOR FIRST QUARTER
2024

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 1/29/2024 Time 11:00
Sampler Model S/N A Operator RTK
Pa(mm Hg)628.9 Ta (°C)9.0 Ta (°K)282.0
Wx Cond:Sunny
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.70 in. of H20Qa(orifice)a 1.071 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.8 in H20 20.3 in H20
Stagnation Pressure (ΔPstg)44.525 mm Hg 37.913 mm Hg
Absolute Stagnation Pressure (P1)b 584.3753 mm Hg 590.9868 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.940 (see note)
Qa (sampler) c 1.0982 m3/min 1.1210 m3/min
QC - Check Percentage Difference d 2.6 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.0921 m3/min
Design flow rate percentage difference f -3.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 1/29/2024 Time 11:52
Sampler Model S/N B Operator RTK
Pa(mm Hg)628.9 Ta (°C)9.0 Ta (°K)282.0
Wx Cond:Sunny
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.72 in. of H20Qa(orifice)a 1.074 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.5 in H20 20.5 in H20
Stagnation Pressure (ΔPstg)45.757 mm Hg 38.287 mm Hg
Absolute Stagnation Pressure (P1)b 583.1426 mm Hg 590.6132 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0965 m3/min 1.1240 m3/min
QC - Check Percentage Difference d 2.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1009 m3/min
Design flow rate percentage difference f -2.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 1/29/2024 Time 11:55
Sampler Model S/N C Operator RTK
Pa(mm Hg)628.9 Ta (°C)9.0 Ta (°K)282.0
Wx Cond:Sunny
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99950
Orifice Press. Drop (ΔH2O)2.77 in. of H20Qa(orifice)a 1.084 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.7 in H20 20.65 in H20
Stagnation Pressure (ΔPstg)46.131 mm Hg 38.567 mm Hg
Absolute Stagnation Pressure (P1)b 582.7691 mm Hg 590.3331 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0944 m3/min 1.1217 m3/min
QC - Check Percentage Difference d 0.9 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1111 m3/min
Design flow rate percentage difference f -1.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
:
Station Location Date 1/29/2024 Time 11:59
Sampler Model S/N D Operator RTK
Pa(mm Hg)628.9 Ta (°C)9.0 Ta (°K)282.0
Wx Cond:Sunny
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.75 in. of H20Qa(orifice)a 1.080 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.5 20.5 in H20
Stagnation Pressure (ΔPstg)45.757 mm Hg 38.287 mm Hg
Absolute Stagnation Pressure (P1)b 583.1426 mm Hg 590.6132 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0984 m3/min 1.1242 m3/min
QC - Check Percentage Difference d 1.7 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1053 m3/min
Design flow rate percentage difference f -2.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
G-FACTOR
Station Location Date 1/29/2024 Time 12:15
Sampler Model S/N E Operator RTK
Pa(mm Hg)628.9 Ta (°C)9.0 Ta (°K)282.0 G-Factor 0.00447091
Wx Cond:Sunny
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.75 in. of H20Qa(orifice)a 1.080 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.2 in H20 18.0 in H20
Stagnation Pressure (ΔPstg)45.104 mm Hg 33.618 mm Hg
Absolute Stagnation Pressure (P1)b 583.7963 mm Hg 595.2824 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.947 (see note)
Qa (sampler) c 1.0877 m3/min 1.1103 m3/min
QC - Check Percentage Difference d 0.7 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1026 m3/min
Design flow rate percentage difference f -2.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Tisch TE-6070V
1/18/2024
Mike Peterson
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 2/16/2024 Time 13:20
Sampler Model S/N A Operator RTK
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.4
Wx Cond:Light snow and cloud cover
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.80 in. of H20Qa(orifice)a 1.079 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.7 in H20 18.0 in H20
Stagnation Pressure (ΔPstg)44.263 mm Hg 33.618 mm Hg
Absolute Stagnation Pressure (P1)b 580.8368 mm Hg 591.4824 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.946 (see note)
Qa (sampler) c 1.0829 m3/min 1.1174 m3/min
QC - Check Percentage Difference d 0.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1129 m3/min
Design flow rate percentage difference f -1.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 2/16/2024 Time 13:35
Sampler Model S/N B Operator RTK
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.4
Wx Cond:Light snow and cloud cover
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.83 in. of H20Qa(orifice)a 1.084 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.7 in H20 17.8 in H20
Stagnation Pressure (ΔPstg)44.263 mm Hg 33.244 mm Hg
Absolute Stagnation Pressure (P1)b 580.8368 mm Hg 591.8559 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.947 (see note)
Qa (sampler) c 1.0860 m3/min 1.1252 m3/min
QC - Check Percentage Difference d 0.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1234 m3/min
Design flow rate percentage difference f -0.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 2/16/2024 Time 13:54
Sampler Model S/N C Operator RTK
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.4
Wx Cond:Light snow and cloud cover
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.93 in. of H20Qa(orifice)a 1.103 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.1 in H20 19.2 in H20
Stagnation Pressure (ΔPstg)45.010 mm Hg 35.859 mm Hg
Absolute Stagnation Pressure (P1)b 580.0897 mm Hg 589.2412 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.943 (see note)
Qa (sampler) c 1.0816 m3/min 1.1145 m3/min
QC - Check Percentage Difference d -1.9 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1360 m3/min
Design flow rate percentage difference f 0.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
:
Station Location Date 2/16/2024 Time 14:00
Sampler Model S/N D Operator RTK
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.4
Wx Cond:Light snow and cloud cover
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.92 in. of H20Qa(orifice)a 1.101 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.8 18.3 in H20
Stagnation Pressure (ΔPstg)44.450 mm Hg 34.178 mm Hg
Absolute Stagnation Pressure (P1)b 580.6500 mm Hg 590.9221 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.945 (see note)
Qa (sampler) c 1.0875 m3/min 1.1208 m3/min
QC - Check Percentage Difference d -1.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1346 m3/min
Design flow rate percentage difference f 0.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
G-FACTOR
Station Location Date 2/16/2024 Time 14:10
Sampler Model S/N E Operator RTK
Pa(mm Hg)625.1 Ta (°C)1.4 Ta (°K)274.4 G-Factor 0.00447091
Wx Cond:Light snow and cloud cover
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.88 in. of H20Qa(orifice)a 1.094 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.5 in H20 18.0 in H20
Stagnation Pressure (ΔPstg)43.890 mm Hg 33.618 mm Hg
Absolute Stagnation Pressure (P1)b 581.2103 mm Hg 591.4824 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.930 (see note) 0.946 (see note)
Qa (sampler) c 1.0764 m3/min 1.1551 m3/min
QC - Check Percentage Difference d -1.6 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1732 m3/min
Design flow rate percentage difference f 3.8 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Tisch TE-6070V
1/18/2024
Mike Peterson
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
:
Station Location Date 2/28/2024 Time 11:00
Sampler Model S/N D Operator RTK
Pa(mm Hg)626.7 Ta (°C)-1.0 Ta (°K)272.0
Wx Cond:Sunny,cold and windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.92 in. of H20Qa(orifice)a 1.095 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.9 19.6 in H20
Stagnation Pressure (ΔPstg)44.637 mm Hg 36.606 mm Hg
Absolute Stagnation Pressure (P1)b 582.0632 mm Hg 590.0941 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.942 (see note)
Qa (sampler) c 1.0831 m3/min 1.1102 m3/min
QC - Check Percentage Difference d -1.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1222 m3/min
Design flow rate percentage difference f -0.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Chris Pos
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DATA SHEET
G-FACTOR
Station Location RTK C3 Date 2/28/24 Time 13:00
Sampler Model Tisch TE-6070V S/N D Operator CP
Pa(mm Hg)625.9 Ta (°C)2.0 Ta (°K)275.1
Wx Cond:Sunny and with light wind VFC G-Factor
Orifice S/N 2023 Calibration Date 1/18/2024
Orifice cal relationship: m=1.04605 b =-0.0196 r =0.99995
Plate No. Orifice ΔPstg ΔPstg P1 = Pa - ΔPstg P1/Pa Qa (Orifice) Qa (Orifice)
ΔH2O (in H20)(mm Hg) (mm Hg) (mm Hg)
flow rate b [Ta]1/2
(in)(m3/min)
open 2.91 21.450 40.061 585.869 0.936 1.100 0.0663
1 2.83 23.450 43.796 582.134 0.930 1.085 0.0654
2 2.80 25.210 47.083 578.847 0.925 1.079 0.0651
3 2.75 29.480 55.058 570.872 0.912 1.070 0.0645
4 2.68 35.060 65.480 560.450 0.895 1.056 0.0637
Operational Flow Rate 16.9 31.507 594.423 0.9497
(a) mm Hg =25.4 (in. H2O/13.6)Qa Qa (Sampler) % REF % Design
(b) Qa(Orifice) = {[ΔH20)(Ta/Pa)]1/2 - b} {1/m}(Orifice) (Using G-Factor)
Difference c Difference c
(c) % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 1.100 1.103 0.27% -2.4%
1.085 1.095 0.92% -3.1%
1.079 1.089 0.83% -3.7%
1.070 1.073 0.28% -5.1%
1.056 1.052 -0.38% -6.9%
0.4%
Sampler Calibration Relationship
1.1196 Using G-Factor (I.e., % difference ≤4)
1.1092 New Calibration Relationship
X = Qa (orifice)/[Ta]1/2
Y = (P1/Pa)
m =15.927 b =-0.11545 r =0.96956
For subsequent calculation of sampler flow rate :
Qa = {[P1/Pa - b][Ta]1/2} {1/m}
Operational Flow Rate: 1.1196 m
3/min (Look-up Table) or 1.1092 (Using new m & b)
VFC HIVOL PM10 SAMPLER CALIBRATION
AVERAGE
CAL criteria: < 10.1%
0.02030635
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/15/2024 Time 12:54
Sampler Model S/N A Operator RTK
Pa(mm Hg)623.7 Ta (°C)4.6 Ta (°K)277.6
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.81 in. of H20Qa(orifice)a 1.088 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.1 in H20 20.2 in H20
Stagnation Pressure (ΔPstg)45.048 mm Hg 37.764 mm Hg
Absolute Stagnation Pressure (P1)b 578.6524 mm Hg 585.9362 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.939 (see note)
Qa (sampler) c 1.0874 m3/min 1.1101 m3/min
QC - Check Percentage Difference d 0.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1106 m3/min
Design flow rate percentage difference f -1.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Alex Laugeman
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/15/2024 Time 12:59
Sampler Model S/N B Operator RTK
Pa(mm Hg)623.7 Ta (°C)4.9 Ta (°K)277.9
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.76 in. of H20Qa(orifice)a 1.079 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.2 in H20 20.1 in H20
Stagnation Pressure (ΔPstg)45.104 mm Hg 37.577 mm Hg
Absolute Stagnation Pressure (P1)b 578.5963 mm Hg 586.1229 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.940 (see note)
Qa (sampler) c 1.0913 m3/min 1.1184 m3/min
QC - Check Percentage Difference d 1.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1055 m3/min
Design flow rate percentage difference f -2.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/15/2024 Time 13:04
Sampler Model S/N C Operator RTK
Pa(mm Hg)623.7 Ta (°C)4.9 Ta (°K)277.9
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.87 in. of H20Qa(orifice)a 1.100 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.5 in H20 20.27 in H20
Stagnation Pressure (ΔPstg)45.813 mm Hg 37.857 mm Hg
Absolute Stagnation Pressure (P1)b 577.8866 mm Hg 585.8428 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0868 m3/min 1.1139 m3/min
QC - Check Percentage Difference d -1.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1271 m3/min
Design flow rate percentage difference f -0.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
G-FACTOR
Station Location Date 3/15/2024 Time 13:57
Sampler Model S/N D Operator RTK
Pa(mm Hg)625.9 Ta (°C)2.0 Ta (°K)275.0 G-Factor
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.20 in. of H20Qa(orifice)a 0.959 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)17.7 in H20 14.8 in H20
Stagnation Pressure (ΔPstg)33.095 mm Hg 27.641 mm Hg
Absolute Stagnation Pressure (P1)b 592.8053 mm Hg 598.2588 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.947 (see note) 0.956 (see note)
Qa (sampler) c 1.1162 m3/min 1.1270 m3/min
QC - Check Percentage Difference d 16.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 0.9417 m3/min
Design flow rate percentage difference f -16.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:Alex Laugeman
Pass
0.02030635
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Tisch TE-6070V
1/18/2024
AS FOUND
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
G-FACTOR
Station Location Date 3/15/2024 Time 14:05
Sampler Model S/N D Operator RTK
Pa(mm Hg)623.7 Ta (°C)5.9 Ta (°K)278.9 G-Factor
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)3.05 in. of H20Qa(orifice)a 1.135 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.6 in H20 17.3 in H20
Stagnation Pressure (ΔPstg)40.416 mm Hg 32.273 mm Hg
Absolute Stagnation Pressure (P1)b 583.2841 mm Hg 591.4271 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.935 (see note) 0.948 (see note)
Qa (sampler) c 1.1083 m3/min 1.1246 m3/min
QC - Check Percentage Difference d -2.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1512 m3/min
Design flow rate percentage difference f 1.9 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:Alex Laugeman
Pass
0.02030635
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Tisch TE-6070V
1/18/2024
AS LEFT
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
G-FACTOR
Station Location Date 3/15/2024 Time 13:25
Sampler Model S/N E Operator RTK
Pa(mm Hg)623.7 Ta (°C)5.0 Ta (°K)278.0 G-Factor 0.00447091
Wx Cond:Sunny, windy
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.87 in. of H20Qa(orifice)a 1.100 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.1 in H20 16.8 in H20
Stagnation Pressure (ΔPstg)39.445 mm Hg 31.339 mm Hg
Absolute Stagnation Pressure (P1)b 584.2553 mm Hg 592.3609 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.937 (see note) 0.950 (see note)
Qa (sampler) c 1.0912 m3/min 1.1072 m3/min
QC - Check Percentage Difference d -0.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1160 m3/min
Design flow rate percentage difference f -1.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Tisch TE-6070V
1/18/2024
Alex Laugeman
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
As Found
Station Location Date 3/20/2024 Time 8:40
Sampler Model S/N A Operator RTK
Pa(mm Hg)623.3 Ta (°C)10.4 Ta (°K)283.4
Wx Cond:Sunny and warm
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.70 in. of H20Qa(orifice)a 1.078 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.2 in H20 20.3 in H20
Stagnation Pressure (ΔPstg)45.197 mm Hg 37.913 mm Hg
Absolute Stagnation Pressure (P1)b 578.1029 mm Hg 585.3868 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0972 m3/min 1.1223 m3/min
QC - Check Percentage Difference d 1.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1023 m3/min
Design flow rate percentage difference f -2.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Chris Pos
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
As Found
Station Location Date 3/20/2024 Time 8:48
Sampler Model S/N B Operator RTK
Pa(mm Hg)623.3 Ta (°C)10.4 Ta (°K)283.4
Wx Cond:Sunny and Warm
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.70 in. of H20Qa(orifice)a 1.078 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.3 in H20 20.4 in H20
Stagnation Pressure (ΔPstg)45.384 mm Hg 38.100 mm Hg
Absolute Stagnation Pressure (P1)b 577.9462 mm Hg 585.2300 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.939 (see note)
Qa (sampler) c 1.0997 m3/min 1.1273 m3/min
QC - Check Percentage Difference d 2.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1045 m3/min
Design flow rate percentage difference f -2.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Chris Pos
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
As Found
Station Location Date 3/20/2024 Time 8:50
Sampler Model S/N C Operator RTK
Pa(mm Hg)623.3 Ta (°C)10.4 Ta (°K)283.4
Wx Cond:Sunny and Warm
Leak Check: Pass/Fail?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01960 r =0.99995
Orifice Press. Drop (ΔH2O)2.75 in. of H20Qa(orifice)a 1.088 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.7 in H20 20.8 in H20
Stagnation Pressure (ΔPstg)46.131 mm Hg 38.847 mm Hg
Absolute Stagnation Pressure (P1)b 577.1691 mm Hg 584.4529 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.926 (see note) 0.938 (see note)
Qa (sampler) c 1.0952 m3/min 1.1228 m3/min
QC - Check Percentage Difference d 0.7 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1151 m3/min
Design flow rate percentage difference f -1.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Chris Pos
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:10
Sampler Model S/N A Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99950
Orifice Press. Drop (ΔH2O)2.88 in. of H20Qa(orifice)a 1.112 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.2 in H20 19.8 in H20
Stagnation Pressure (ΔPstg)45.141 mm Hg 36.923 mm Hg
Absolute Stagnation Pressure (P1)b 571.7590 mm Hg 579.9766 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.940 (see note)
Qa (sampler) c 1.1060 m3/min 1.1210 m3/min
QC - Check Percentage Difference d -0.5 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1267 m3/min
Design flow rate percentage difference f -0.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 10:25
Sampler Model S/N A Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99950
Orifice Press. Drop (ΔH2O)2.90 in. of H20Qa(orifice)a 1.110 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.9 in H20 17.9 in H20
Stagnation Pressure (ΔPstg)44.637 mm Hg 33.431 mm Hg
Absolute Stagnation Pressure (P1)b 568.0632 mm Hg 579.2691 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.945 (see note)
Qa (sampler) c 1.0970 m3/min 1.1190 m3/min
QC - Check Percentage Difference d -1.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1323 m3/min
Design flow rate percentage difference f 0.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:10
Sampler Model S/N A Operator RTK
Pa(mm Hg)612.3 Ta (°C)1.2 Ta (°K)274.2
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.88 in. of H20Qa(orifice)a 1.104 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.8 in H20 16.4 in H20
Stagnation Pressure (ΔPstg)38.903 mm Hg 30.667 mm Hg
Absolute Stagnation Pressure (P1)b 573.3969 mm Hg 581.6332 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.936 (see note) 0.950 (see note)
Qa (sampler) c 1.1060 m3/min 1.1230 m3/min
QC - Check Percentage Difference d 0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1213 m3/min
Design flow rate percentage difference f -0.8 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:20
Sampler Model S/N B Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.85 in. of H20Qa(orifice)a 1.106 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.9 in H20 19.66 in H20
Stagnation Pressure (ΔPstg)44.693 mm Hg 36.718 mm Hg
Absolute Stagnation Pressure (P1)b 572.2072 mm Hg 580.1821 mm Hg
Stagnation Pressure Ratio (P1/Pa)lookup table 0.928 (see note) 0.940 (see note)
Qa (sampler) c 1.097 m3/min 1.111 m3/min
QC - Check Percentage Difference d -0.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1200 m3/min
Design flow rate percentage difference f -0.9 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 10:43
Sampler Model S/N B Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.80 in. of H20Qa(orifice)a 1.091 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.6 in H20 19.1 in H20
Stagnation Pressure (ΔPstg)44.039 mm Hg 35.672 mm Hg
Absolute Stagnation Pressure (P1)b 568.6609 mm Hg 577.0279 mm Hg
Stagnation Pressure Ratio (P1/Pa)lookup table 0.928 (see note) 0.942 (see note)
Qa (sampler) c 1.088 m3/min 1.105 m3/min
QC - Check Percentage Difference d -0.3 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1082 m3/min
Design flow rate percentage difference f -1.9 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:20
Sampler Model S/N B Operator RTK
Pa(mm Hg)613.3 Ta (°C)1.5 Ta (°K)274.5
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.74 in. of H20Qa(orifice)a 1.077 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.8 in H20 16.52 in H20
Stagnation Pressure (ΔPstg)38.903 mm Hg 30.854 mm Hg
Absolute Stagnation Pressure (P1)b 574.3969 mm Hg 582.4465 mm Hg
Stagnation Pressure Ratio (P1/Pa)lookup table 0.937 (see note) 0.950 (see note)
Qa (sampler) c 1.099 m3/min 1.115 m3/min
QC - Check Percentage Difference d 2.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.0926 m3/min
Design flow rate percentage difference f -3.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:26
Sampler Model S/N C Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.88 in. of H20Qa(orifice)a 1.112 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.9 in H20 19.6 in H20
Stagnation Pressure (ΔPstg)44.637 mm Hg 36.606 mm Hg
Absolute Stagnation Pressure (P1)b 572.2632 mm Hg 580.2941 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.941 (see note)
Qa (sampler) c 1.101 m3/min 1.117 m3/min
QC - Check Percentage Difference d -1.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1277 m3/min
Design flow rate percentage difference f -0.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 10:53
Sampler Model S/N C Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.90 in. of H20Qa(orifice)a 1.110 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.6 in H20 19.6 in H20
Stagnation Pressure (ΔPstg)44.076 mm Hg 36.606 mm Hg
Absolute Stagnation Pressure (P1)b 568.6235 mm Hg 576.0941 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.940 (see note)
Qa (sampler) c 1.092 m3/min 1.106 m3/min
QC - Check Percentage Difference d -1.6 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1241 m3/min
Design flow rate percentage difference f -0.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:25
Sampler Model S/N C Operator RTK
Pa(mm Hg)613.3 Ta (°C)1.4 Ta (°K)274.4
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.95 in. of H20Qa(orifice)a 1.117 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.6 in H20 16.06 in H20
Stagnation Pressure (ΔPstg)38.436 mm Hg 29.994 mm Hg
Absolute Stagnation Pressure (P1)b 574.8638 mm Hg 583.3056 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.937 (see note) 0.951 (see note)
Qa (sampler) c 1.101 m3/min 1.119 m3/min
QC - Check Percentage Difference d -1.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1350 m3/min
Design flow rate percentage difference f 0.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:30
Sampler Model S/N D Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.83 in. of H20Qa(orifice)a 1.102 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.0 in H20 19.88 in H20
Stagnation Pressure (ΔPstg)44.824 mm Hg 37.129 mm Hg
Absolute Stagnation Pressure (P1)b 572.0765 mm Hg 579.7712 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.940 (see note) lookup table
Qa (sampler) c 1.103 m3/min 1.119 m3/min
QC - Check Percentage Difference d 0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1181 m3/min
Design flow rate percentage difference f -1.0 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator: NOTES:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 11:04
Sampler Model S/N D Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:)vercast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.90 in. of H20Qa(orifice)a 1.110 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.6 in H20 19.1 in H20
Stagnation Pressure (ΔPstg)44.076 mm Hg 35.672 mm Hg
Absolute Stagnation Pressure (P1)b 568.6235 mm Hg 577.0279 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.942 (see note) lookup table
Qa (sampler) c 1.095 m3/min 1.112 m3/min
QC - Check Percentage Difference d -1.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1272 m3/min
Design flow rate percentage difference f -0.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator: NOTES:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:30
Sampler Model S/N D Operator RTK
Pa(mm Hg)613.3 Ta (°C)1.9 Ta (°K)274.9
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.89 in. of H20Qa(orifice)a 1.107 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.1 in H20 15.77 in H20
Stagnation Pressure (ΔPstg)37.577 mm Hg 29.453 mm Hg
Absolute Stagnation Pressure (P1)b 575.7229 mm Hg 583.8472 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.939 (see note) 0.952 (see note) lookup table
Qa (sampler) c 1.108 m3/min 1.125 m3/min
QC - Check Percentage Difference d 0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1237 m3/min
Design flow rate percentage difference f -0.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator: NOTES:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:35
Sampler Model S/N E Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.77 in. of H20Qa(orifice)a 1.091 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.7 in H20 19.38 in H20
Stagnation Pressure (ΔPstg)44.301 mm Hg 36.195 mm Hg
Absolute Stagnation Pressure (P1)b 572.5994 mm Hg 580.7050 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.941 (see note)lookup table
Qa (sampler) c 1.109 m3/min 1.125 m3/min
QC - Check Percentage Difference d 1.7 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1060 m3/min
Design flow rate percentage difference f -2.1 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 11:14
Sampler Model S/N E Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.85 in. of H20Qa(orifice)a 1.101 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.2 in H20 18.3 in H20
Stagnation Pressure (ΔPstg)43.367 mm Hg 34.178 mm Hg
Absolute Stagnation Pressure (P1)b 569.3332 mm Hg 578.5221 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.929 (see note) 0.944 (see note)lookup table
Qa (sampler) c 1.101 m3/min 1.119 m3/min
QC - Check Percentage Difference d 0.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1187 m3/min
Design flow rate percentage difference f -1.0 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:36
Sampler Model S/N E Operator RTK
Pa(mm Hg)613.3 Ta (°C)1.8 Ta (°K)274.8
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.75 in. of H20Qa(orifice)a 1.080 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.4 in H20 16.1 in H20
Stagnation Pressure (ΔPstg)38.100 mm Hg 30.069 mm Hg
Absolute Stagnation Pressure (P1)b 575.2000 mm Hg 583.2309 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.938 (see note) 0.951 (see note)lookup table
Qa (sampler) c 1.112 m3/min 1.128 m3/min
QC - Check Percentage Difference d 3.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.0944 m3/min
Design flow rate percentage difference f -3.1 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:39
Sampler Model S/N F Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.81 in. of H20Qa(orifice)a 1.098 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.2 in H20 19.91 in H20
Stagnation Pressure (ΔPstg)45.178 mm Hg 37.185 mm Hg
Absolute Stagnation Pressure (P1)b 571.7216 mm Hg 579.7151 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.940 (see note)
Qa (sampler) c 1.090 m3/min 1.100 m3/min
QC - Check Percentage Difference d -0.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1083 m3/min
Design flow rate percentage difference f -1.9 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 11:23
Sampler Model S/N F Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast, breezy, and snow flurries
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.95 in. of H20Qa(orifice)a 1.120 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.6 in H20 19.5 in H20
Stagnation Pressure (ΔPstg)43.983 mm Hg 36.419 mm Hg
Absolute Stagnation Pressure (P1)b 568.7169 mm Hg 576.2809 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.941 (see note)
Qa (sampler) c 1.082 m3/min 1.098 m3/min
QC - Check Percentage Difference d -3.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1348 m3/min
Design flow rate percentage difference f 0.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:53
Sampler Model S/N F Operator RTK
Pa(mm Hg)613.3 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)3.01 in. of H20Qa(orifice)a 1.130 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.1 in H20 16.7 in H20
Stagnation Pressure (ΔPstg)39.407 mm Hg 31.190 mm Hg
Absolute Stagnation Pressure (P1)b 573.8926 mm Hg 582.1103 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.936 (see note) 0.949 (see note)
Qa (sampler) c 1.091 m3/min 1.107 m3/min
QC - Check Percentage Difference d -3.5 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1453 m3/min
Design flow rate percentage difference f 1.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:42
Sampler Model S/N G Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.84 in. of H20Qa(orifice)a 1.104 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.3 in H20 20.11 in H20
Stagnation Pressure (ΔPstg)45.403 mm Hg 37.558 mm Hg
Absolute Stagnation Pressure (P1)b 571.4975 mm Hg 579.3416 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.926 (see note) 0.939 (see note)
Qa (sampler) c 1.105 m3/min 1.120 m3/min
QC - Check Percentage Difference d 0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1191 m3/min
Design flow rate percentage difference f -1.0 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 11:33
Sampler Model S/N G Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast, breezy, and snow flurries
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.95 in. of H20Qa(orifice)a 1.120 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.7 in H2020in H20
Stagnation Pressure (ΔPstg)44.263 mm Hg 37.353 mm Hg
Absolute Stagnation Pressure (P1)b 568.4368 mm Hg 575.3471 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.928 (see note) 0.939 (see note)
Qa (sampler) c 1.097 m3/min 1.111 m3/min
QC - Check Percentage Difference d -2.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1333 m3/min
Design flow rate percentage difference f 0.3 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 11:56
Sampler Model S/N G Operator RTK
Pa(mm Hg)613.3 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.96 in. of H20Qa(orifice)a 1.121 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.2 in H20 16.73 in H20
Stagnation Pressure (ΔPstg)39.594 mm Hg 31.246 mm Hg
Absolute Stagnation Pressure (P1)b 573.7059 mm Hg 582.0543 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.935 (see note) 0.949 (see note)
Qa (sampler) c 1.106 m3/min 1.123 m3/min
QC - Check Percentage Difference d -1.3 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1379 m3/min
Design flow rate percentage difference f 0.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 1/29/2024 Time 10:45
Sampler Model S/N H Operator RTK
Pa(mm Hg)616.9 Ta (°C)7.0 Ta (°K)280.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.80 in. of H20Qa(orifice)a 1.096 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)24.1 in H20 19.91 in H20
Stagnation Pressure (ΔPstg)45.085 mm Hg 37.185 mm Hg
Absolute Stagnation Pressure (P1)b 571.8150 mm Hg 579.7151 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.927 (see note) 0.940 (see note)
Qa (sampler) c 1.101 m3/min 1.117 m3/min
QC - Check Percentage Difference d 0.4 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1123 m3/min
Design flow rate percentage difference f -1.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 2/16/2024 Time 11:44
Sampler Model S/N H Operator RTK
Pa(mm Hg)612.7 Ta (°C)2.4 Ta (°K)275.4
Wx Cond:Overcast and breezy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.85 in. of H20Qa(orifice)a 1.101 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.6 in H20 19.5 in H20
Stagnation Pressure (ΔPstg)40.416 mm Hg 36.419 mm Hg
Absolute Stagnation Pressure (P1)b 572.2841 mm Hg 576.2809 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.934 (see note) 0.941 (see note)
Qa (sampler) c 1.100 m3/min 1.109 m3/min
QC - Check Percentage Difference d -0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1097 m3/min
Design flow rate percentage difference f -1.8 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Mike Peterson
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/15/2024 Time 12:02
Sampler Model S/N H Operator RTK
Pa(mm Hg)613.3 Ta (°C)2.5 Ta (°K)275.5
Wx Cond:Sunny, windy
Leak Check: PASS/FAIL?
Orifice S/N 2023 CAL Calibration Date
Orifice cal relationship: m=1.04605 b =-0.01956 r =0.99995
Orifice Press. Drop (ΔH2O)2.87 in. of H20Qa(orifice)a 1.104 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.9 in H20 16.63 in H20
Stagnation Pressure (ΔPstg)39.034 mm Hg 31.059 mm Hg
Absolute Stagnation Pressure (P1)b 574.2662 mm Hg 582.2410 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.936 (see note) 0.949 (see note)
Qa (sampler) c 1.105 m3/min 1.121 m3/min
QC - Check Percentage Difference d 0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1201 m3/min
Design flow rate percentage difference f -0.9 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
Calibrator:
VFC HIVOL PM10 FLOW CHECK/CAL SHEET
RTK Hi Country
Tisch
1/18/2024
Alex Laugeman
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott / First Quarter 2024 Summary Report
Trinity Consultants
APPENDIX E: PERFORMANCE AUDIT REPORT FIRST QUARTER 2024

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants
PERFORMANCE AUDIT OF
PARTICULATE MONITORING EQUIPMENT
AT RIO TINTO KENNECOTT’S
COPPERTON AND HI-COUNTRY
MONITORING STATIONS
MARCH 2024

Prepared By:

TRINITY CONSULTANTS
4525 Wasatch Blvd.
Suite 200
Salt Lake City, Utah
801-272-3000

March 2024

Project No. 244501.0030

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants i
TABLE OF CONTENTS
 INTRODUCTION 1-1 
 PERFORMANCE AUDIT EQUIPMENT 2-1 
 PERFORMANCE AUDIT PROCEDURES 3-1 
3.1 Copperton C3 and Hi-Country Monitoring Sites ........................................................ 3-1 
3.2 Performance Audit Methods ..................................................................................... 3-2 
 PERFORMANCE AUDIT RESULTS 4-1 
4.1 Copperton C3 Monitoring Station ............................................................................. 4-1 
4.2 Hi-Country Monitoring Station ................................................................................. 4-1 
 CONCLUSION 5-1 
APPENDIX A. AUDIT EQUIPMENT CERTIFICATIONS A 
APPENDIX B. PERFORMANCE AUDIT FIELD DATA SHEETS – COPPERTON C3 B 
APPENDIX C. PERFORMANCE AUDIT FIELD DATA SHEETS – HI-COUNTRY C 

List of Tables
Table 2-1 Trinity Performance Audit Equipment .................................................................................... 2-1 
Table 3-1 Instrumentation at Rio Tinto Kennecott’s Copperton C3 and Hi-Country PM10 Monitoring Stations 3-
2 
Table 3-2 Performance Audit Methods and Acceptable Tolerances ......................................................... 3-2 
Table 4-1 Copperton C3 PM10 Hi-Volume Sampler Flow Audit Results ..................................................... 4-1 
Table 4-2 Hi-Country PM10 Hi-Volume Sampler Flow Audit Results .......................................................... 4-1 
Table 5-1 Performance Audit Results of Rio Tinto Kennecott’s Copperton C3 and Hi-Country Monitoring
Stations ............................................................................................................................................. 5-1 

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 1-1
INTRODUCTION
Condition II.B.4.a of Rio Tinto Kennecott’s Bingham Canyon Mine (BCM) Approval Order (AO) requires that
two ambient monitoring stations, referred to as Copperton C3 and Hi-Country, be operated to measure
particulate matter with an aerodynamic diameter of less than 10 microns (PM10) until a minimum of
234,000,000 tons per year (TPY) of material moved from the mine has been achieved. The purpose of the
monitoring is to measure PM10 concentrations in the vicinity of the mine and to maintain compliance with the
National Ambient Air Quality Standards (NAAQS) for 24-hour PM10.

On March 8, 2024, Trinity Consultants (Trinity) conducted a quality assurance performance audit of the
Copperton C3 and Hi-Country PM10 monitoring equipment to meet Utah Division of Air Quality (UDAQ) and US
EPA quality assurance requirements. This report summarizes the performance audit activities conducted on
the filter based PM10 samplers on this day.

PM10 sampler performance audits at the Rio Tinto Kennecott monitoring sites were conducted in accordance
with the following guidelines:

► Quality Assurance Handbook for Air Pollution Measurement Systems, Vol. II: Ambient Air Quality
Monitoring Program, January 2017, and,
► 40 CFR Part 50, Appendix J .

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 2-1
PERFORMANCE AUDIT EQUIPMENT
Presented in Table 2-1 are the Trinity audit reference standard instruments which were used to conduct quality
assurance performance audits.
Table 2-1 Trinity Performance Audit Equipment
Parameter Equipment Serial Number
PM10 Flow Tisch Environmental HiVol Orifice 0379
NA = Not Available.

Copies of audit equipment certifications are included in Appendix A.
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 3-1
PERFORMANCE AUDIT PROCEDURES
The following sections describe the PM10 sampler quality assurance performance checks conducted by Trinity
at Rio Tinto Kennecott’s Copperton C3 and Hi-Country monitoring stations on March 8, 2024.
3.1 Copperton C3 and Hi-Country Monitoring Sites
PM10 measurements are collected every three days for 24 hours, midnight to midnight, in accordance with US
EPA’s three-day sampling schedule at the Copperton C3 and Hi-Country monitoring stations. The Hi-Country
monitoring station is operated in the vicinity of one of the top five highest modeled ground level PM10
concentrations; the Copperton C3 monitoring station is located near the town of Copperton, Utah.

The latitude/longitude coordinates and elevations of the Copperton and Hi-Country air quality monitoring sites
are as follows:

Site Latitude
(decimal degrees)
Longitude
(decimal degrees)
Elevation
(feet)
Copperton C3 40.56265° North -112.10257° West 5,480
Hi-Country 40.50335° North -112.10294° West 6,003

The PM10 instrumentation that is installed at the monitoring sites is presented in Table 3-1.
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 3-2
Table 3-1 Instrumentation at Rio Tinto Kennecott’s Copperton C3 and Hi-Country PM10
Monitoring Stations
Parameter Equipment
Manufacturer
Model
Number
Serial Number
Copperton
PM10 Wedding & Associates High Volume Model 600 A
PM10 Wedding & Associates High Volume Model 600 B
PM10 Wedding & Associates High Volume Model 600 C
PM10 Tisch Environmental Model TE-6070V D
PM10 Tisch Environmental Model TE-6070V E
Hi-Country
PM10 Tisch Environmental Model TE-6070V A
PM10 Tisch Environmental Model TE-6070V B
PM10 Tisch Environmental Model TE-6070V C
PM10 Tisch Environmental Model TE-6070V D
PM10 Tisch Environmental Model TE-6070V E
PM10 Tisch Environmental Model TE-6070V F
PM10 Tisch Environmental Model TE-6070V G
PM10 Tisch Environmental Model TE-6070V H
3.2 Performance Audit Methods

The sampler is audited using an orifice transfer standard that is traceable to a primary standard. The orifice
transfer standard is referenced to 25°C and 760 mmHg. The audit device, whether it be one that uses multi-
hole adapter plates or an adjustable flow restrictor, is connected to a differential pressure gauge or tube
manometer. Flow rates are calculated using the certification equation for the transfer standard.

A summary of the audit methods and the acceptable tolerance for each method is presented in Table 3-2.
Table 3-2 Performance Audit Methods and Acceptable Tolerances
Parameter Audit Method Acceptable Tolerances
PM10 Sampler Flow Multi-hole Adapter Plates or
Adjustable Flow Restrictor
<±7.1% of transfer standard
<±10.1% from design

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 4-1
PERFORMANCE AUDIT RESULTS
The following sections present the March 8, 2024 performance audit results for the PM10 samplers located at
Rio Tinto Kennecott’s Copperton C3 and Hi-Country monitoring stations.
4.1 Copperton C3 Monitoring Station

The Copperton C3 site volumetric flow controlled high-volume PM10 samplers were audited using a certified
high-volume calibration orifice with a filter mounted in the sampler. The audit flowrate percent differences
using the Qa or actual flowrate method are presented in Table 4-1.
Table 4-1 Copperton C3 PM10 Hi-Volume Sampler Flow Audit Results
Sampler ID Reference
Standard
(m3/min)
Sampler
Flow
(m3/min)
% Difference
(Transfer
Standard)
% Difference
(Design)
A 1.090 1.083 -0.6 -1.8
B 1.092 1.091 -0.1 -1.5
C 1.107 1.100 -0.6 -0.6
D 1.094 1.103 0.8 -2.0
E 1.097 1.086 -1.0 -1.8

As seen from Table 4-1, all samplers were within the allowable tolerance of <±7.1% of the transfer standard
and within <±10% of the design flow rate and were operating within the allowable average 1.13 m3/minute
flow range.
4.2 Hi-Country Monitoring Station
The Hi-Country site volumetric flow controlled high-volume PM10 samplers were audited using a certified high-
volume calibration orifice with a filter mounted in the sampler. The audit flowrate percent differences using
the Qa or actual flowrate method are presented in Table 4-2.
Table 4-2 Hi-Country PM10 Hi-Volume Sampler Flow Audit Results
Sampler
ID
Reference
Standard
(m3/min)
Sampler
Flow
(m3/min)
% Difference
(Transfer
Standard)
% Difference
(Design)
A 1.109 1.099 -0.9 -0.6
B 1.111 1.090 -1.9 -0.5
C 1.124 1.093 -2.7 0.7
D 1.121 1.097 -2.2 0.4
E 1.102 1.102 0.0 -1.4
F 1.114 1.083 -2.8 -0.2
G 1.121 1.098 -2.1 0.5
H 1.109 1.095 -1.3 -0.7

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 4-2
As seen from Table 4-2, all samplers were within the allowable tolerance of <±7.1% of the transfer standard
and within <±10% of the design flow rate and were operating within the allowable average 1.13 m3/min flow
range.

Copies of the performance Copperton C3 and Hi-Country audit field data sheets are included in Appendices B
and C, respectively.

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants 5-1
CONCLUSION
A performance audit was conducted by Trinity on the PM10 samplers at Rio Tinto Kennecott’s Copperton C3
and Hi-Country monitoring station on March 8, 2024. Table 5-1 presents the results of this audit.
Table 5-1 Performance Audit Results of Rio Tinto Kennecott’s Copperton C3 and Hi-Country
Monitoring Stations
Parameter Equipment
Manufacturer
Model
Number
Serial Number Audit
Results
Copperton
PM10 Wedding & Associates High Volume Model 600 A Pass
PM10 Wedding & Associates High Volume Model 600 B Pass
PM10 Wedding & Associates High Volume Model 600 C Pass
PM10 Tisch Environmental Model TE-6070V D Pass
PM10 Tisch Environmental Model TE-6070V E Pass
Hi-Country
PM10 Tisch Environmental Model TE-6070V A Pass
PM10 Tisch Environmental Model TE-6070V B Pass
PM10 Tisch Environmental Model TE-6070V C Pass
PM10 Tisch Environmental Model TE-6070V D Pass
PM10 Tisch Environmental Model TE-6070V E Pass
PM10 Tisch Environmental Model TE-6070V F Pass
PM10 Tisch Environmental Model TE-6070V G Pass
PM10 Tisch Environmental Model TE-6070V H Pass

As can be seen from Table 5-1, all particulate monitoring equipment passed the audit and appeared to be
operating within USEPA and UDAQ requirements for PM10 measurements for Special Purpose Monitoring (SPM)
stations.
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Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants A
APPENDIX A. AUDIT EQUIPMENT CERTIFICATIONS

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants B
APPENDIX B. PERFORMANCE AUDIT FIELD DATA SHEETS –
COPPERTON C3

DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/8/2024 Time 12:05
Sampler Model S/N A Operator RTK
Pa(mm Hg)627.6 Ta (°C)-1.0 Ta (°K)272.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.13 in. of H20Qa(orifice)a 1.090 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)23.20 in H20 19.98 in H20
Stagnation Pressure (ΔPstg)43.329 mm Hg 37.316 mm Hg
Absolute Stagnation Pressure (P1)b 584.2706 mm Hg 590.2844 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.931 (see note) 0.941 (see note)
Qa (sampler) c (Use Lookup table)1.0827 m3/min 1.1030 m3/min
QC - Check Percentage Difference d -0.6 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1101 m3/min
Design flow rate percentage difference f -1.8 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 AUDIT SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/8/2024 Time 12:09
Sampler Model S/N B Operator RTK
Pa(mm Hg)628.0 Ta (°C)-1.0 Ta (°K)272.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.14 in. of H20Qa(orifice)a 1.092 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)22.5 in H20 19.2 in H20
Stagnation Pressure (ΔPstg)42.022 mm Hg 35.859 mm Hg
Absolute Stagnation Pressure (P1)b 585.9779 mm Hg 592.1412 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.933 (see note) 0.943 (see note)
Qa (sampler) c lookup table 1.0907
m3/min 1.1124 m3/min
QC - Check Percentage Difference d -0.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1135 m3/min
Design flow rate percentage difference f -1.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:= cell contains equation
VFC HIVOL PM10 AUDIT SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/8/2024 Time 12:15
Sampler Model S/N C Operator RTK
Pa(mm Hg)628.0 Ta (°C)-1.0 Ta (°K)272.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.20 in. of H20Qa(orifice)a 1.107 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)21.01 in H20 18.1 in H20
Stagnation Pressure (ΔPstg)39.239 mm Hg 33.804 mm Hg
Absolute Stagnation Pressure (P1)b 588.7607 mm Hg 594.1956 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.938 (see note) 0.946 (see note)
Qa (sampler) c lookup table 1.100
m3/min 1.1160 m3/min
QC - Check Percentage Difference d -0.6 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1231 m3/min
Design flow rate percentage difference f -0.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 AUDIT SHEET
RTK C3
Wedding & Assoc.
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/8/2024 Time 12:19
Sampler Model S/N D Operator RTK
Pa(mm Hg)628.0 Ta (°C)-1.0 Ta (°K)272.0 G-Factor 0.02030635
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.15 in. of H20Qa(orifice)a 1.094 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.0 in H20 16.4 in H20
Stagnation Pressure (ΔPstg)37.278 mm Hg 30.629 mm Hg
Absolute Stagnation Pressure (P1)b 590.7218 mm Hg 597.3706 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.941 (see note) 0.951 (see note)
Qa (sampler) c 1.1028 m3/min 1.1159 m3/min
QC - Check Percentage Difference d 0.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1072 m3/min
Design flow rate percentage difference f -2.0 % (≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 AUDIT SHEET
RTK C3
Tisch TE-6070V
1/18/2024
Adam L.
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
C3
Station Location Date 3/8/2024 Time 12:25
Sampler Model S/N E Operator RTK
Pa(mm Hg)628.0 Ta (°C)-1.0 Ta (°K)272.0 G-Factor 0.00447091
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.91055 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.16 in. of H20Qa(orifice)a 1.097 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)19.9 in H20 16.2 in H20
Stagnation Pressure (ΔPstg)37.166 mm Hg 30.256 mm Hg
Absolute Stagnation Pressure (P1)b 590.8338 mm Hg 597.7441 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.941 (see note) 0.952 (see note)
Qa (sampler) c 1.0857 m3/min 1.0990 m3/min
QC - Check Percentage Difference d -1.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1102 m3/min
Design flow rate percentage difference f -1.8 % (≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler G-Factor, manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 AUDIT SHEET
RTK C3
Tisch TE-6070V
1/18/2024
Adam L.
Pass
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4

Rio Tinto Kennecott Copperton and Hi-Country Stations / PM10 March 2024 Performance Audit
Trinity Consultants C
APPENDIX C. PERFORMANCE AUDIT FIELD DATA SHEETS – HI-
COUNTRY
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 10:45
Sampler Model S/N A Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:Windy
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.20 in. of H20Qa(orifice)a 1.109 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.0 in H20 16.2 in H20
Stagnation Pressure (ΔPstg)37.353 mm Hg 30.256 mm Hg
Absolute Stagnation Pressure (P1)b 578.5471 mm Hg 585.6441 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.939 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.099
m3/min 1.113 m3/min
QC - Check Percentage Difference d -0.9 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1231 m3/min
Design flow rate percentage difference f -0.6 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:Note:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 10:50
Sampler Model S/N B Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:Sunny, calm
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.21 in. of H20Qa(orifice)a 1.111 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)19.8 in H20 16.1 in H20
Stagnation Pressure (ΔPstg)36.979 mm Hg 30.069 mm Hg
Absolute Stagnation Pressure (P1)b 578.9206 mm Hg 585.8309 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.940 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.090
m3/min 1.103 m3/min
QC - Check Percentage Difference d -1.9 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1243 m3/min
Design flow rate percentage difference f -0.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 10:56
Sampler Model S/N C Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:cold. Cloudy, breezy
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.26 in. of H20Qa(orifice)a 1.124 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.1 in H20 16.3 in H20
Stagnation Pressure (ΔPstg)37.540 mm Hg 30.443 mm Hg
Absolute Stagnation Pressure (P1)b 578.3603 mm Hg 585.4574 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.939 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.093
m3/min 1.108 m3/min
QC - Check Percentage Difference d -2.7 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1382 m3/min
Design flow rate percentage difference f 0.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 11:00
Sampler Model S/N D Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.25 in. of H20Qa(orifice)a 1.121 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)19.9 in H20 16.2 in H20
Stagnation Pressure (ΔPstg)37.166 mm Hg 30.256 mm Hg
Absolute Stagnation Pressure (P1)b 578.7338 mm Hg 585.6441 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.940 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.097 m3/min 1.111 m3/min
QC - Check Percentage Difference d -2.2 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1350 m3/min
Design flow rate percentage difference f 0.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 11:05
Sampler Model S/N E Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.17 in. of H20 Qa(orifice)a 1.102 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)19.7 in H20 16.0 in H20
Stagnation Pressure (ΔPstg)36.793 mm Hg 29.882 mm Hg
Absolute Stagnation Pressure (P1)b 579.1074 mm Hg 586.0176 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.940 (see note)0.951 (see note)
Qa (sampler) c lookup table ->1.102 m3/min 1.115 m3/min
QC - Check Percentage Difference d 0.0 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1147 m3/min
Design flow rate percentage difference f -1.4 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100)where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 11:09
Sampler Model S/N F Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:Sunny
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.22 in. of H20Qa(orifice)a 1.114 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.0 in H20 16.3 in H20
Stagnation Pressure (ΔPstg)37.353 mm Hg 30.443 mm Hg
Absolute Stagnation Pressure (P1)b 578.5471 mm Hg 585.4574 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.939 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.083 m3/min 1.097 m3/min
QC - Check Percentage Difference d -2.8 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1274 m3/min
Design flow rate percentage difference f -0.2 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 11:14
Sampler Model S/N G Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.25 in. of H20Qa(orifice)a 1.121 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)20.1 in H20 16.3 in H20
Stagnation Pressure (ΔPstg)37.540 mm Hg 30.443 mm Hg
Absolute Stagnation Pressure (P1)b 578.3603 mm Hg 585.4574 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.939 (see note) 0.951 (see note)
Qa (sampler) c lookup table 1.098
m3/min 1.113 m3/min
QC - Check Percentage Difference d -2.1 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1360 m3/min
Design flow rate percentage difference f 0.5 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4
Hi Country
Station Location Date 3/8/2024 Time 11:19
Sampler Model S/N H Operator RTK
Pa(mm Hg)615.9 Ta (°C)-5.0 Ta (°K)268.0
Wx Cond:
Leak Check: PASS/FAIL?
Orifice S/N 0379 Calibration Date
Orifice cal relationship: m=0.9106 b =-0.0314 r =0.99985
Orifice Press. Drop (ΔH2O)2.20 in. of H20Qa(orifice)a 1.109 m3/min
ORIFICE INSTALLED ORIFICE NOT INSTALLED
Stagnation Pressure (ΔPstg)19.9 in H20 16.4 in H20
Stagnation Pressure (ΔPstg)37.166 mm Hg 30.629 mm Hg
Absolute Stagnation Pressure (P1)b 578.7338 mm Hg 585.2706 mm Hg
Stagnation Pressure Ratio (P1/Pa)0.940 (see note) 0.950 (see note)
Qa (sampler) c lookup table 1.095
m3/min 1.108 m3/min
QC - Check Percentage Difference d -1.3 %(≤7.1% of Xfer Std.)
Qa (corrected sampler) e 1.1220 m3/min
Design flow rate percentage difference f -0.7 %(≤10.1 of Design)
(a) Qa(Orifice) = {[(Delta-H20)(Ta/Pa)]1/2 - b} {1/m}
(b) P1 = Pa - ΔPstg
(c) Determine Qa sampler from manufacturer's lookup table (or from alternative calibration relationship)
(d) QC % Difference = ((Qa(sampler - Qa(orifice))/Qa(orifice))*100 where Qa (sampler) is measured
with the orifice installed
(e) Qa(Corrected sampler) = Qa(sampler)*((100- QC % difference)/100) where Qa (sampler) is measured
without the orifice installed.
(f) Design flow rate % difference = ((Qa(corrected sampler)-1.13)/1.13)*100
AUDITOR:
VFC HIVOL PM10 FLOW AUDIT SHEET
RTK Hi Country
Tisch
1/18/2024
Adam Lenkowski
PASS
DocuSign Envelope ID: 24542C09-31A9-4942-B5FA-51F62F5A95C4