3 rd Quarter Summary of Meteorological and Ambient Air Quality Data Kennecott Utah Copper Monitoring Stations. Prepared for:

Transcription

1 3 rd Quarter 2018 Summary of Meteorological and Ambient Air Quality Data Kennecott Utah Copper Monitoring Stations Prepared for: Prepared by: Mr. Bryce C. Bird Director Division of Air Quality 195 North 1950 West Salt Lake City, Utah WeatherBank, Incorporated Edmond, Oklahoma

2 1.0 INTRODUCTION BACKGROUND DATA ACQUISITION DATA SUMMARY METEOROLOGICAL DATA Wind Speed and Horizontal Wind Direction - Copperton C Wind Speed and Horizontal Wind Direction Hi-Country Estates HC Temperature - Copperton C Temperature Hi-Country Estates HC PM10 - Copperton C PM10 Hi-Country Estates HC AIR QUALITY AND METEOROLOGICAL DATA RECOVERY QUALITY CONTROL APPLIED TO COLLECTED DATA Visual Inspection of Equipment Remote Interrogation of the Monitoring Station Data Validation Equipment Calibration and Audits SUMMARY APPENDICES Third Quarter 2018 Ambient Air Quality Report Page 2

3 1.0 Introduction Summary of Meteorological and Ambient Air Quality Data At Kennecott Utah Copper Monitoring Stations Third Quarter 2018 This third quarter report, prepared for the Utah Division of Air Quality (UDAQ) by WeatherBank, Inc. (WBI, an AccuWeather, Inc. company), summarizes the meteorological and air quality data collected from July 1, 2018 through September 30, 2018 at the Kennecott Utah Copper (KUC) monitoring stations located in Copperton and a second station located south of Copperton in an area known as Hi-Country Estates. 1.1 Background WBI was retained by KUC to assemble data collected by KUC s Air Quality Monitoring System (AQMS) during the third quarter period from its meteorological monitoring stations in the area of the Bingham Canyon Mine known as Copperton C2 and Hi-Country Estates HC. WBI also assembled PM 10 (coarse particulate) data collected during the same period from KUC s ambient air quality monitoring stations at Copperton C3 and Hi-Country Estates HC. Figure 1 Location of KUC s Bingham Canyon Mine and C2, C3 and HC monitoring stations The two monitoring stations, C2 and C3, are not collocated, but rather are located on property owned by KUC, in the general vicinity of Copperton, at the locations depicted in Figures 1, 2 and 3. Third Quarter 2018 Ambient Air Quality Report Page 3

4 Figures 2 and 3 KUC s monitoring stations in Copperton and Hi-Country Estates, Utah Third Quarter 2018 Ambient Air Quality Report Page 4

5 The latitude, longitude and elevation coordinates of the C2, C3 and HC monitoring sites, along with a summary of meteorological instrumentation and air quality monitors installed are as follows: Hi-Country Estates HC Copperton C2 Copperton C3 Latitude: N Latitude: N Latitude: N Longitude: W Longitude: W Longitude: W Elevation: 6003-Feet ASL Elevation: 5,451Feet ASL Elevation: 5,508 Feet ASL Parameter COPPERTON C2 - Meteorological Sensors Equipment Manufacturer Model Serial Number Sensor/Inlet Height (m) * Wind Speed Met One 014A W Wind Direction Met One 024A Y Temperature Met One none 10 Parameter COPPERTON C3 - Ambient Air Quality Monitors Equipment Manufacturer Model Serial Number * Above Ground Sensor/Inlet Height (m) * PM10 Unit-A PM10 Unit-B WEDDING & High Volume PM10 Unit-C Associates Sampler PM10 Unit-D PM10 Unit-E Parameter HI-COUNTRY ESTATES HC - Ambient Air Quality Monitors Equipment Manufacturer Model Serial Number * Above Ground Sensor/Inlet Height (m) * PM10 Unit-A P PM10 Unit-B P PM10 Unit-C P PM10 Unit-D TISCH High Volume P PM10 Unit-E Environmental, Inc. Sampler P PM10 Unit-F P PM10 Unit-G P PM10 Unit-H P * Above Ground, Including Platform Height (approximate) Third Quarter 2018 Ambient Air Quality Report Page 5

6 Parameter HI-COUNTRY ESTATES HC - Meteorological Sensors Equipment Manufacturer Model Serial Number Sensor/Inlet Height (m) * Wind Speed Met One 014A Y Wind Direction Met One 024A W Temperature Met One none Data Acquisition * Above Ground Data from the instruments listed above are measured by each individual sensor or monitor and collected and stored by a Campbell Scientific Inc., model CR10 data logger. Meteorological data is sampled every second and recorded as one-minute averages within the data logger. With the highvolume particulate sampler, pressure drop data is sampled and recorded as one-minute averages. High volume quartz filters are later processed for PM by weight. Data logger programming converts all one-minute samples into hourly averages. The data acquisition system or data logger at each meteorological and air quality site is routinely interrogated multiple times per day via radio frequency (RF) modems by the KUC AQMS. Once data is captured, it is processed and copied to duplicate computer files. The data logger telecommunications software performs dynamic error checking during each download to ensure that an exact duplicate file is created. Any failures with instrumentation or data acquisition systems are identified in short order of occurrence by AQMS personnel, and field personnel are dispatched to correct problems in a timely manner, preventing excessive data loss. The data collected during each interrogation are checked for consistency which August include plotting of parameters for visual inspection. All data presented in this report (Appendix A - D) represent the final, quality-assured data sets. Hourly values are the arithmetic hourly averages of the recorded one-minute averages from the data logger except where noted. If fewer than 35-minutes are available, the hour is considered "missing", and identified as such. 2.0 Data Summary This report summarizes data results and data recovery for the third quarter period of July 1, 2018 through September 30, Tabulated hourly data for this period are provided in the appendices. Each appendix table displays the hourly average of measurements as hour "ending"; that is to say, the first hour of the day is labeled 01 and displays data beginning at just after midnight (00:00:01 AM) and ending at 01:00:00 AM. The second hour is labeled 02, and displays data beginning at 01:00:01 AM and ending at 02:00:00 AM. All data is presented according to local standard time (Mountain Standard Time), year round. Third Quarter 2018 Ambient Air Quality Report Page 6

7 2.1 Meteorological Data Meteorological data records from the KUC Copperton and Hi-Country Estates monitoring sites include wind speed, horizontal wind direction, and ambient temperature. All parameters are measured at approximately 10-meters Wind Speed and Horizontal Wind Direction - Copperton C2 By way of the following figures, the joint frequency of occurrence distribution of wind speed and wind direction (wind rose) is presented for the third quarter period. Wind speed records show there were no hours of calm winds (wind speed equal to zero) during the third quarter period. The percentage of non-calm wind speeds less than or equal to 10 meters per second (m/s) was percent for the third quarter period. The percentage of non-calm wind speeds greater than10-m/s but less than or equal to 16-m/s was 0.41-percent for the third quarter period. The percentage of non-calm wind speeds greater than 16-m/s was 0.00-percent for the third quarter period. There were no hours of missing wind speed and direction data during the third quarter period. The speed sector holding the largest number of records was the 2-to-3 m/s bin with 25.2-percent. The direction sector holding the largest number of records was the west southwest (WSW) sector with percent. The sector with the highest average wind speed was the north (N) sector at 5.0-m/s. Hourly averages of the wind speed data by month for the third quarter period are presented in Appendix-A, and hourly averages of the wind direction by month for the third quarter period are presented in Appendix-B. C2 10m Wind Speed Frequency Distribution 30% 25% 3 rd Quarter 2018 Bin Percentage 20% 15% 10% 5% 0% Wind Speed - 1 m/s Bins Third Quarter 2018 Ambient Air Quality Report Page 7

8 Figure 4 C2 Wind Rose for July 2018 Third Quarter 2018 Ambient Air Quality Report Page 8

9 Figure 5 C2 Wind Rose for August 2018 Third Quarter 2018 Ambient Air Quality Report Page 9

10 Figure 6 C2 Wind Rose for September 2018 Third Quarter 2018 Ambient Air Quality Report Page 10

11 Figure 7 C2 Wind Rose for the 2nd Quarter 2018 (July, August and September) Copperton C2 Wind Speed Summary (m/s) Month Mean Minimum Daily Mean Maximum Daily Mean Minimum Hour Maximum Hour July August September rd Quarter Third Quarter 2018 Ambient Air Quality Report Page 11

12 2.1.2 Wind Speed and Horizontal Wind Direction Hi-Country Estates HC By way of the following figures, the joint frequency of occurrence distribution of wind speed and wind direction (wind rose) is presented for the third quarter period. Wind speed records show there were no hours of calm winds (wind speed equal to zero) during the third quarter period. The percentage of non-calm wind speeds less than or equal to 10 meters per second (m/s) was percent for the third quarter period. The percentage of non-calm wind speeds greater than 10-m/s but less than or equal to 16-m/s was 0.82-percent for the third quarter period. The percentage of non-calm wind speeds greater than 16-m/s was 0.00-percent for the third quarter period. There were no missing wind speed or direction data hours in the third quarter period. The speed sector holding the largest number of records was the 2-to-3 m/s bin with 22.6-percent. The direction sector holding the largest number of records was the southwest (SW) sector with percent. The sector with the highest average wind speed was the south southeast (SSE) sector at 6.2-m/s. Hourly averages of the wind speed data by month for the third quarter period are presented in Appendix-A, and hourly averages of the wind direction by month for the third quarter period are presented in Appendix-B. HC 10m Wind Speed Frequency Distribution 25% 20% 3 rd Quarter 2018 Bin Percentage 15% 10% 5% 0% Wind Speed - 1 m/s Bins Third Quarter 2018 Ambient Air Quality Report Page 12

13 Figure 8 HC Wind Rose for July 2018 Third Quarter 2018 Ambient Air Quality Report Page 13

14 Figure 9 HC Wind Rose for August 2018 Third Quarter 2018 Ambient Air Quality Report Page 14

15 Figure 10 HC Wind Rose for September 2018 Third Quarter 2018 Ambient Air Quality Report Page 15

16 Figure 11 HC Wind Rose for the 2nd Quarter 2018 (July, August and September) Hi-Country Estates HC Wind Speed Summary (m/s) Month Mean Minimum Daily Mean Maximum Daily Mean Minimum Hour Maximum Hour July August September rd Quarter Third Quarter 2018 Ambient Air Quality Report Page 16

17 2.1.3 Temperature - Copperton C2 During the third quarter period, ambient monthly mean temperatures (using all available hourly data) ranged from a low of 21.4 C in September to a high of 27.1 C in July. Daily mean temperatures during the third quarter period ranged from a low of 13.6 C in September to a high of 30.0 C in July. The coldest hourly reading was 8.7 C on September 25, 2018 at 5AM MST, and the warmest hourly reading was 35.6 C on July 6, 2018 at 4PM MST. Hourly averages of the temperature data by month for the third quarter period are presented in Appendix C. Third quarter period temperature data are summarized below. Copperton C2 Temperature Summary ( C) Month Mean Minimum Daily Mean Maximum Daily Mean Minimum Hour Maximum Hour July August September rd Quarter C2 10m Daily Temperature Distribution ( C) C2 DAILY MAX TEMP C C2 DAILY AVERAGE TEMP C C2 DAILY MIN TEMP C 3 rd Quarter Jul 03-Jul 05-Jul 07-Jul 09-Jul 11-Jul 13-Jul 15-Jul 17-Jul 19-Jul 21-Jul 23-Jul 25-Jul 27-Jul 29-Jul 31-Jul 02-Aug 04-Aug 06-Aug 08-Aug 10-Aug 12-Aug 14-Aug 16-Aug 18-Aug 20-Aug 22-Aug 24-Aug 26-Aug 28-Aug 30-Aug 01-Sep 03-Sep 05-Sep 07-Sep 09-Sep 11-Sep 13-Sep 15-Sep 17-Sep 19-Sep 21-Sep 23-Sep 25-Sep 27-Sep 29-Sep Third Quarter 2018 Ambient Air Quality Report Page 17

18 2.1.4 Temperature Hi-Country Estates HC During the third quarter period, ambient monthly mean temperatures (using all available hourly data) ranged from a low of 20.7 C in September to a high of 26.0 C in July. Daily mean temperatures during the third quarter period ranged from a low of 12.8 C in September to a high of 28.9 C in July. The coldest hourly reading was 9.1 C on September 25, 2018 at 5AM MST, and the warmest hourly reading was 34.7 C on July 6, 2018 at 5PM MST. Hourly averages of the temperature data by month for the third quarter period are presented in Appendix C. Third quarter period temperature data are summarized below. Hi-Country Estates HC Temperature Summary ( C) Month Mean Minimum Daily Mean Maximum Daily Mean Minimum Hour Maximum Hour July August September rd Quarter HC 10m Daily Temperature Distribution ( C) HC DAILY MAX TEMP C HC DAILY AVERAGE TEMP C HC DAILY MIN TEMP C 3 rd Quarter Jul 03-Jul 05-Jul 07-Jul 09-Jul 11-Jul 13-Jul 15-Jul 17-Jul 19-Jul 21-Jul 23-Jul 25-Jul 27-Jul 29-Jul 31-Jul 02-Aug 04-Aug 06-Aug 08-Aug 10-Aug 12-Aug 14-Aug 16-Aug 18-Aug 20-Aug 22-Aug 24-Aug 26-Aug 28-Aug 30-Aug 01-Sep 03-Sep 05-Sep 07-Sep 09-Sep 11-Sep 13-Sep 15-Sep 17-Sep 19-Sep 21-Sep 23-Sep 25-Sep 27-Sep 29-Sep Third Quarter 2018 Ambient Air Quality Report Page 18

19 2.1.5 PM10 - Copperton C3 For the third quarter period, a number of statistics were calculated (at actual temperature and pressure), and these include: Monthly Mean (average of all 24-hour [daily]) concentration, by month Maximum daily concentration, by month Second highest daily concentration, by month Quarterly arithmetic mean concentration The third quarter period PM 10 data are summarized in Appendix D. Copperton C3 PM 10 Concentrations (ug/m 3 ) Statistics July August September Monthly Mean Maximum Daily PM nd Highest Daily PM Quarterly Arithmetic Mean Copperton C3 PM 10 Sample Dates Invalidated * Statistics Sample Date Cumulative % Invalidated Date #1 Sat, Jul-07, % Invalidated Date #2 Tue, Jul-10, % Invalidated Date #3 Fri, Jul-13, % Invalidated Date #4 Mon, Jul-16, % *Note: According to KUC's PM10 and Quality Assurance Project Plan (QAPP), submitted to DAQ Dec., 2011, PM10 daily sample run durations shall be at least 23-hours and no more than 25-hours (1, minutes), and filter samples collected by samplers which operated outside of this guideline will be invalidated. Three samples failed the runtime standard, QAPP Criteria 18.1 (4); Jan. 7th, Jan. 18th, and Feb. 13th. The remaining invalidated sample dates were invalidated per QAPP criteria 18.1 (6.) Filter Leakage (improperly seated gasket). There were no ambient PM 10 samples greater than 135 ug/m 3 and no exceedances of the NAAQS during any 24-hour sampling period, and thus no laboratory filter analyses were conducted. Third Quarter 2018 Ambient Air Quality Report Page 19

20 2.1.6 PM10 Hi-Country Estates HC For the third quarter period, a number of statistics were calculated (at actual temperature and pressure), and these include: Monthly Mean (average of all 24-hour [daily]) concentration, by month Maximum daily concentration, by month Second highest daily concentration, by month Quarterly arithmetic mean concentration The third quarter period PM 10 data are summarized in Appendix D. Hi-Country Estates HC PM 10 Concentrations (ug/m 3 ) Statistics July August September Monthly Mean Maximum Daily PM nd Highest Daily PM Quarterly Arithmetic Mean Hi-Country Estates HC PM 10 Sample Dates Invalidated * Statistics Sample Date Cumulative % There were no invalidated samples during this quarter. *Note: According to KUC's PM10 and Quality Assurance Project Plan (QAPP), submitted to DAQ, PM10 daily sample run durations shall be at least 23-hours and no more than 25-hours (1, minutes), and filter samples collected by samplers which operated outside of this guideline will be invalidated. There were no ambient PM 10 samples greater than 135 ug/m 3 and no exceedances of the NAAQS during any 24-hour sampling period, and thus no laboratory filter analyses were conducted. Third Quarter 2018 Ambient Air Quality Report Page 20

21 2.2 Air Quality and Meteorological Data Recovery Data recoveries in percent possible for the third quarter period are provided in the tables below. Copperton C2 and C3 Data Recovery Summary Month Wind Speed Wind Direction Temperature PM10 July % % 99.87% 63.64% August % % 99.87% % September % % % % 3rd Quarter % % 99.91% 87.10% Hi-Country Estates HC Data Recovery Summary Month Wind Speed Wind Direction Temperature PM10 July % % % % August % % % % September % % % % 3rd Quarter % % % % 2.3 Quality Control Applied to Collected Data Meteorological and air quality data collected from the KUC Bingham Canyon Mine monitoring stations have been subjected to a series of quality control procedures to document the validity of the data and to maintain high integrity of the captured data sets. Meteorological data is reviewed for validity before they are included in reports. Data validation requires screening the data to identify potential outliers or incorrect values, and this review is performed by an experienced meteorologist, familiar with the KUC AQMS and the types of background data collected by the C2 station. Data screening ensures that only validated data are reported. Data validation procedures were compiled from the following sources: EPA's Quality Assurance Handbook for Air Pollution Measurement Systems, Volume II, Ambient Specific Methods Meteorological Monitoring Guidance for Regulatory Modeling Applications, EPA-454/R , Feb Data validation requires manual review of raw hourly data. The data are scanned for reasonability with respect to expected and/or normal values. Next, each parameter is screened according to the following data acceptance criteria and validity checks (Table 8-4, Meteorological Monitoring Guidance for Regulatory Modeling Applications). Third Quarter 2018 Ambient Air Quality Report Page 21

22 Screening criteria includes: Wind speed data is less than zero or greater than 25 m/s Wind speed data does not vary by more than 0.1 m/s for 3 consecutive hours Wind speed data does not vary by more than 0.5 m/s for 12 consecutive hours Wind direction data is less than zero or greater than 360 degrees Wind direction data does not vary by more than 1 degree for more than 3 consecutive hours Wind direction data does not vary by more than 10 degrees for 18 consecutive hours Temperature data is greater than the local record high Temperature data is less than the local record low Temperature data must be between -40 C and 40 C Temperature data does not vary by more than 0.5 C for 12 consecutive hours Temperature change is greater than 5 C from the previous hour Temperature difference is greater than 0.1 C during the daytime Temperature difference is less than -0.1 C during night time Temperature difference is greater than 5.0 or less than -3.0 C Visual Inspection of Equipment The KUC AQMS maintains a dedicated, full-time staff of instrumentation engineers who routinely visual inspect each monitoring site on a frequent basis. These on-site inspections occur, according to the current QAPP. Any issues or problems detected during these routine inspections are corrected as expeditiously as possible Remote Interrogation of the Monitoring Station The KUC AQMS maintains a dedicated, full-time staff of air quality scientists and/or meteorologists specifically trained and well-experienced in evaluating all collected data. These AQMS personnel routinely inspect all collected data, as data is collected through automated processes. Abnormal data values, station sensor or monitor problems, station collection problems, etc., are quickly exposed and instrumentation engineers are dispatched to investigate. Third Quarter 2018 Ambient Air Quality Report Page 22

23 2.3.3 Data Validation When the AQMS identifies data values that exceed the criteria set for that parameter, the data file is inspected visually. In most cases, a flagged value is not invalid; it merely fell outside of expected ranges or "normal" rates of change for that parameter. If, after investigation, KUC AQMS personnel determined the value was reasonable, the value is not invalidated and retained. If after inspection, there was reason to suspect the data point, the value would be considered invalid or "missing." All missing data classifications are applied on the data management file only, and not on the raw data file collected from the data logger; the raw data file is never manipulated. In this manner, the originally collect data sets August be reviewed if additional information impacting the event becomes known Equipment Calibration and Audits To ensure the collection of high quality data, field audits on meteorological sensors are performed. Audits are performed prior to any calibration and before any adjustments are made to the measurement systems, essentially each audit is performed on systems and sensors on an as found basis. Audits are performed quarterly by third-party contractors specializing in such services. Audit reports contain copies of actual audit forms used, in addition to summations and comments of the auditor, if any. Equipment calibrations are performed at installation and once per quarter for particulate analyzers. Meteorological equipment calibrations are performed when audits indicate the need or when problems are identified. Sensors which do not meet US EPA PSD calibration specifications are repaired and recalibrated. Third-party audits were conducted during the third quarter period on the C3 and HC PM 10 samplers and C2 and HC meteorological sensors as follows: Ambient PM 10 Audit - 3rd Quarter 2018 AUDIT RESULTS FOR COPPERTON 3 (C3) PM10 UNITS Audit Conducted: Thursday September 27, 2018 Site Audit Tolerance Pass/Fail Design Tolerance Pass/Fail Unit Flow Rate Limit Status Flow Rate Limit Status C3-A 0.4% +/- 6.0% PASS 0.8% +/- 10.0% PASS C3-B 0.6% +/- 6.0% PASS 0.8% +/- 10.0% PASS C3-C 1.1% +/- 6.0% PASS 0.8% +/- 10.0% PASS C3-D 1.4% +/- 6.0% PASS -0.1% +/- 10.0% PASS C3-E 1.2% +/- 6.0% PASS -0.1% +/- 10.0% PASS Third Quarter 2018 Ambient Air Quality Report Page 23

24 Ambient PM 10 Audit - 3rd Quarter 2018 AUDIT RESULTS FOR HI-COUNTY (HC) PM10 UNITS Audit Conducted: Thursday September 27, 2018 Site Audit Tolerance Pass/Fail Design Tolerance Pass/Fail Unit Flow Rate Limit Status Flow Rate Limit Status HC-A 0.1% +/- 6.0% PASS 0.1% +/- 10.0% PASS HC-B -0.9% +/- 6.0% PASS 1.0% +/- 10.0% PASS HC-C -1.2% +/- 6.0% PASS 1.9% +/- 10.0% PASS HC-D -0.4% +/- 6.0% PASS 1.1% +/- 10.0% PASS HC-E -0.6% +/- 6.0% PASS 1.9% +/- 10.0% PASS HC-F -2.1% +/- 6.0% PASS 1.9% +/- 10.0% PASS HC-G 0.0% +/- 6.0% PASS 0.1% +/- 10.0% PASS HC-H -1.1% +/- 6.0% PASS 1.0% +/- 10.0% PASS Third Quarter 2018 Ambient Air Quality Report Page 24

25 Meteorological Systems Audit - 3rd Quarter 2018 AUDIT RESULTS FOR COPPERTON (C2) METEOROLOGICAL INSTRUMENTS Audit Conducted: Thursday September 27, 2018 Wind Speed Sensor Wind Direction Sensor Temperature Sensor W4919 Y690 - NO SER # - Audit Expected Observed Absolute Motor Speed Speed Error Speed ( MPH ) ( MPH ) Response EXISTING SENSOR 600 rpm PASSED 200 rpm PASSED 60 rpm PASSED Cardinal Expected Observed Absolute Audit Direction Direction Error Direction ( True) ( True) ( True) EXISTING SENSOR North PASSED South PASSED East PASSED West PASSED Ambient KUC Audit Absolute Temperature Temp. Temp. Error Probe Degree - F PASSED Degree - C PASSED Third Quarter 2018 Ambient Air Quality Report Page 25

26 Meteorological Systems Audit - 3rd Quarter 2018 AUDIT RESULTS FOR HI-COUNTRY (HC) METEOROLOGICAL INSTRUMENTS Audit Conducted: Thursday September 27, 2018 Wind Speed Sensor Wind Direction Sensor Temperature Sensor Y4271 W NO SER # - Audit Expected Observed Absolute Motor Speed Speed Error Speed ( MPH ) ( MPH ) Response EXISTING SENSOR 600 rpm PASSED 200 rpm PASSED 60 rpm PASSED Cardinal Expected Observed Absolute Audit Direction Direction Error Direction ( True) ( True) ( True) EXISTING SENSOR North PASSED South PASSED East PASSED West PASSED Ambient KUC Audit Absolute Temperature Temp. Temp. Error Probe Degree - F PASSED Degree - C PASSED Third Quarter 2018 Ambient Air Quality Report Page 26

27 3.0 Summary Summarized tables representing collected meteorological and air quality data from the Bingham Canyon Mine ambient stations, C2, C3 and HC, passing KUC AQMS quality assurance standards are presented in the Appendices to follow. Final Approval: Date: October 15, 2018 S.A. Root Certified Consulting Meteorologist Project Manager WeatherBank, Inc. 4.0 Appendices Appendix A Wind Speed Data Appendix B Wind Direction Data Appendix C Temperature Data Appendix D PM10 Data Third Quarter 2018 Ambient Air Quality Report Page 27

28 C2 Quarterly Meteorological Report July 2018 COPPERTON, UTAH C2 HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

29 C2 Quarterly Meteorological Report August 2018 COPPERTON, UTAH C2 HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

30 C2 Quarterly Meteorological Report September 2018 COPPERTON, UTAH C2 HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

31 HC Quarterly Meteorological Report July 2018 HI-COUNTRY ESTATES, UTAH HC HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

32 HC Quarterly Meteorological Report August 2018 HI-COUNTRY ESTATES, UTAH HC HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

33 HC Quarterly Meteorological Report September 2018 HI-COUNTRY ESTATES, UTAH HC HOURLY AVERAGE WIND SPEED (m/s) DAILY DAY MAX AVG MIN DAY HOURLY PERCENT DATA CAPTURE: %

34 C2 Quarterly Meteorological Report July 2018 COPPERTON, UTAH C2 HOURLY AVERAGE WIND DIRECTION (degrees) DAILY DAY MODE %TIME WSW 20.8% WNW 16.7% N 25.0% WSW 29.2% SE 29.2% SSE 20.8% NNE 20.8% S 33.3% SSE 16.7% SSE 20.8% SSW 33.3% SE 20.8% W 16.7% NNW 25.0% N 20.8% NE 16.7% W 16.7% W 33.3% N 16.7% SSE 50.0% S 20.8% N 37.5% NW 37.5% NNE 12.5% WNW 20.8% W 20.8% W 25.0% NW 16.7% N 20.8% N 16.7% W 25.0% DAY MONTHLY WSW 10.2% PERCENT DATA CAPTURE: %