Semiannual Maintenance and Calibration Report Prepared by Air Resource Specialists, Inc.

Transcription

1 Semiannual Maintenance and Calibration Report Prepared by Air Resource Specialists, Inc. Client: National Park Service Field Personnel: Will Yahr Site: Big Bend NP - (BIBE-KB) Service Date(s): 7/26/217 Site Operator: Price Rumbelow Subject: Semiannual Maintenance All site visit and calibration forms are attached, detailing the pre- and post-maintenance calibrations and test results. Calibration acceptance criteria are defined as the thresholds at which corrective action is required. Data acceptance criteria are defined as the thresholds at which the quality of the ambient data is questionable and may require invalidation. This report is not complete without the inclusion of the calibration form worksheets. SUMMARY OF FINDINGS GASEOUS POLLUTANT SUPPORT EQUIPMENT Zero-Air System (Werther / Panther Compressor PC7/4E): Maintenance - No maintenance for the pump or compressor was required at this time. (SELECT) Station Temperature: Pre-Maintenance Testing - The sensor was compared against a certified temperature transfer standard. The sensor was found to be responding within calibration acceptance criteria. Maintenance - No maintenance was performed. Post-Maintenance Testing - No post-maintenance checks were performed. GASEOUS POLLUTANT ANALYZERS Ozone Analyzer (Thermo 49c): Pre-Maintenance Testing - The ozone analyzer was compared against a Level 2 ozone transfer standard. The ozone analyzer was found to be responding within calibration acceptance criteria. Maintenance - The ozone inlet and calibration line tubing were replaced. The ozone analyzer was calibrated. Post-Maintenance Testing - The ozone analyzer was compared against a Level 2 ozone transfer standard. The ozone analyzer was found to be responding within calibration acceptance criteria. Ozone Station Reference (Thermo 49c): Pre-Maintenance Testing - The Level 3 ozone station reference was recertified using a Level 2 ozone transfer standard. The ozone station reference was found to be responding within calibration acceptance criteria. Maintenance - The ozone station reference logger correction factors were updated according to the new certification.

2 Post-Maintenance Testing - The ozone station reference was compared against a Level 2 ozone transfer standard. The ozone station reference was found to be responding within calibration acceptance criteria. METEOROLOGICAL SENSORS Ambient Temperature and Vertical Temperature Difference (RM Young 41342VC): Pre-Maintenance Testing - The sensor was compared against a certified temperature transfer standard in three water baths controlled at temperatures between and 5 degrees Celsius. The sensor was confirmed to be responding within calibration acceptance criteria. The aspirator fan was functioning correctly. Maintenance - Part of the signal wire insulation had worn down to the bare wires. Electrical tape was used to cover up and reseal the insulation. Post-Maintenance Testing - No post-maintenance checks were performed. Relative Humidity (Rotronic MP61): Pre-Maintenance Testing - The sensor was collocated with a certified relative humidity transfer standard. The sensor was confirmed to be responding within calibration acceptance criteria. The aspirator fan was functioning correctly. Maintenance - Relative humidity sensor serial number was replaced with sensor serial number Post-Maintenance Testing - The sensor was collocated with a certified relative humidity transfer standard. The sensor was confirmed to be responding within calibration acceptance criteria. Wind Speed (Climatronics 175): Pre-Maintenance Testing - The sensor was challenged with a certified anemometer drive. The sensor was confirmed to be responding within calibration acceptance criteria. The starting threshold test for the sensor was within acceptance criteria. Maintenance - Wind speed sensor serial number 1697 was replaced with sensor serial number Post-Maintenance Testing - The sensor was challenged with a certified anemometer drive. The sensor was confirmed to be responding within calibration acceptance criteria. The starting threshold test for the sensor was within acceptance criteria. The heater for the sensor was functioning correctly. Wind Direction (Climatronics 176): Pre-Maintenance Testing - The reference alignment for the sensor was checked using a compass. The reference alignment for the sensor was confirmed to be outside of acceptable limits. The accuracy of the sensor was tested by comparison to a reference. The sensor was confirmed to be responding within calibration acceptance criteria. The linearity of the sensor was within acceptable limits. The starting threshold test results were within acceptance criteria. Maintenance - Wind direction sensor serial number 222 was replaced with sensor serial number The wind alignment crossarm was adjusted. Post-Maintenance Testing - The reference alignment for the sensor was checked using a compass. The reference alignment for the sensor was confirmed to be within acceptable limits. The accuracy of the sensor was tested by comparison to a reference. The sensor was confirmed to be responding within

3 calibration acceptance criteria. The linearity of the sensor was within acceptable limits. The starting threshold test for the sensor was within acceptance criteria. Solar Radiation (Li-Cor Pyranometer): Pre-Maintenance Testing - The sensor was collocated with a certified solar radiation transfer standard. The sensor was confirmed to be responding within calibration acceptance criteria. The sensor was found to be level and clean. Maintenance - No maintenance was performed. Post-Maintenance Testing - No post-maintenance checks were performed. Precipitation (Climatronics 158): Pre-Maintenance Testing - The sensor was challenged using a known volume of water. The sensor was found responding within calibration acceptance criteria. The sensor was found to be level and clean. The functionality of the heater was not assessed. Maintenance - No maintenance was performed. Post-Maintenance Testing - No post-maintenance checks were performed. PARTICULATE MONITORS AND SAMPLERS CASTNET Filter Pack Flow: Pre-Maintenance Testing - A leak check on the system was performed and results were within acceptable limits. The flow was checked using a certified flow standard measuring flow in standard conditions. The measured flow was found to be within calibration acceptance criteria. Maintenance - The pump was rebuilt and the internal filter was replaced. The internal elbows were inspected and found to be clean. The logger configuration was updated according to the Excel calibration spreadsheet. Post-Maintenance Testing - The flow was checked using a certified flow standard measuring flow in standard conditions. The measured flow was confirmed to be within calibration acceptance criteria. ADDITIONAL COMMENTS There are two new operators that will be performing weekly visits to the site. They were present for DataView checklist training and for the tailgate safety meeting.

4 SITE INFORMATION CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 LATITUDE North Deg Min LONGITUDE West 13 1 Sec CALCULATE-> Decimal Decimal Deg Min Sec --CALCULATE-> ELEVATION Meters --CALCULATE-> Feet Feet --CALCULATE-> Meters Photo Documentation Completed? Yes No N/A Cellular Phone Coverage Cellular Phone Coverage Protocol? Carrier? # of Bars? Signal Strength? -X dbm -X dbm DAY TIME IN TIME OUT 7/26/217 SITE STANDARDS PM Flow Reference Please verify site standards used by the site operator MANUFACTURER MODEL SERIAL # Calibration Expiration Date NOTES:

5 TEMPERATURE / VERTICAL TEMPERATURE DIFFERENCE SYSTEM VERIFICATION & CALIBRATION CLIENT NP Service FIELD SPECIALIST Will Yahr DATE 7/26/217 SITE NAME Big Bend NP - K-Bar Ranch Road DATE OF LAST VISIT 2/21/217 MANUFACTURER MODEL Temperature Reference Eutechnics 44 SERIAL NUMBER EXPIRATION DATE 8/11/217 2m Temperature Sensor Climatronics 193 Serial Number EPA149 List sensors according to height on tower, from highest to lowest. 2m Temperature Sensor RM Young 193 Serial Number EPA149 Temp. Deltas DATA ACCEPTANCE CRITERIA (<=) Ambient Temperature Difference ( o C) Vertical Temperature Difference ( o C) 1. N/A 2m Temperature Bath Temp ( o C) DAS Difference MAX ABS Difference.7 MAX ABS Difference Aspirator fan functional 2m? Yes No N/A Yes No N/A Yes No N/A Yes No N/A Each sensor was verified against its data channel? Yes No N/A Each Temperature Difference = Upper - Lower? Yes No N/A Bath Temp ( o C) 2m Temperature MAX ABS Difference MAX ABS Difference NOTES: The signal wire insulation had worn through in multiple places (insects, wildlife?). It was wrapped in electrical tape. No other maintennace was performed.

6 CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road STATION TEMPERATURE SENSOR VERIFICATION & CALIBRATION Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 Temperature Reference MANUFACTURER MODEL SERIAL NUMBER Eutechnics EXPIRATION DATE 8/11/217 CALIBRATION ACCEPTANCE CRITERIA (<=) Temperature Difference ( o C) 1. Temperature Reference ( o C) DAS ( o C) Difference Reference ( o C) DAS ( o C) Temperature Difference NOTES: This is a YSI style sensor. No maintenance was performed.

7 CLIENT SITE NAME RELATIVE HUMIDITY SENSOR VERIFICATION & CALIBRATION NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 RH SENSOR REFERENCE MANUFACTURER Rotronic MODEL HG2 SERIAL NUMBER EXPIRATION DATE 9/27/217 Serial Number Rotronic MP61A Serial Number Rotronic MP61A 5264 DATA ACCEPTANCE CRITERIA (<=) Relative Humidity Difference (%) 1% Hour Relative Humidity (%) Relative Humidity (%) STD DAS Difference V Hour STD DAS Difference 46.9% 47.6%.7% % 29.4% -.3% 41.4% 42.2%.8% % 29.4% -.2% 35.8% 36.3%.4% % 27.7% -.1% V Average.7% Average -.2% Aspirator fan functional? Yes No N/A NOTES: The sensor was replaced during the 12: hour.

8 WIND SPEED SENSOR VERIFICATION & CALIBRATION CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE 7/26/217 DATE OF LAST VISIT 2/21/217 MANUFACTURER MODEL SERIAL NUMBER EXPIRATION DATE Wind Speed Reference RM Young 1882A/1883A CA4268 5/6/218 Wind Speed Torque Gauge RM Young NA and Climatronics / and Climatronics / Heavy Duty Aluminum Heavy Duty Aluminum Sensor Serial # 1697 Sensor Serial # 2229 Cups Serial # 1967 Cups Serial # 1967 DATA ACCEPTANCE CRITERIA (<=) Wind Speed Difference (m/s).25 Wind Speed Difference (%) Wind Speed Threshold (m/s vs % Diff.) 5.% 5. if wind speed <= 5 m/s if wind speed > 2 m/s 2. Select UNITS m/s Motor Speed (rpm) Target Speed Wind Speed DAS Difference.241 N/A N/A N/A % % % % % Starting Threshold Torque <=.3 g-cm TORQUE.2 NO ACTION REQUIRED Heater sleeve functional? Yes No N/A Wind Speed Motor Speed (rpm) Target Speed DAS Difference..235 N/A N/A N/A % % % % % Starting Threshold Torque <=.3 g-cm TORQUE.2 NO ACTION REQUIRED NOTES: The site does not have sensor heaters due to typical warm ambient temperatures. The sensor response time was slow for both the removed and installed sensor.

9 WIND DIRECTION SENSOR VERIFICATION & CALIBRATION CLIENT NP Service FIELD SPECIALIST Will Yahr DATE 7/26/217 SITE NAME Big Bend NP - K-Bar Ranch Road DATE OF LAST VISIT 2/21/217 Direction Alignment Reference Direction Linearity Reference Direction Torque Gauge MANUFACTURER MODEL SERIAL NUMBER Brunton Transit NA 45 Degree Disc NA RM Young NA EXPIRATION DATE & Sensor Serial # Vane Serial # Climatronics & Climatronics Sensor Serial # Vane Serial # 3498 Local Magnetic Declination (degrees) 8. Method Solar Azimtuh ACCEPTANCE CRITERIA (<=) Cross-arm Alignment Error (degrees) (CAL) 2 Total Align. Diff (degrees) (DATA) 5 Sensor Linearity (degrees) (CAL) 5 Mag. Dec. from NOAA (deg/min/sec) Landmarks From the North From the South From the East From the West. Degrees Is the Reference Alignment intended to be N-S? YES Is the Reference Alignment intended to be N-S? YES Reference Alignment (degrees) 6. FAIL Reference Alignment (degrees) 1. SENSOR ALIGNMENT N-S Reference Degrees DAS From the North 36.9 From the South From the East From the West Total Alignment MAX ABS Diff OR Difference FAIL SENSOR ALIGNMENT N-S Reference Degrees DAS From the North From the South From the East From the West Total Alignment MAX ABS Diff Difference SENSOR ALIGNMENT SENSOR ALIGNMENT Landmark Degrees DAS Difference Landmark Degrees DAS Difference From the North From the North From the South 18 From the South 18 From the East 9 From the East 9 From the West 27 From the West 27 Total Alignment MAX ABS Diff Total Alignment MAX ABS Diff OR SENSOR ALIGNMENT SENSOR ALIGNMENT X Reference Degrees DAS Difference X Reference Degrees DAS Difference 6 Align with Ref (N) Align with Ref (S) Perp with Ref (E) Perp with Ref (W) 271 Total Alignment MAX ABS Diff Total Alignment MAX ABS Diff OR OR SENSOR LINEARITY Point DAS MAX Difference Difference N/A SENSOR LINEARITY Point DAS Difference N/A MAX Difference 3 NO ACTION REQUIRED NO ACTION REQUIRED Starting Threshold TORQUE Starting Threshold Torque <= 6. g-cm 4. Torque <= 6. g-cm NO ACTION REQUIRED TORQUE 4. NO ACTION REQUIRED Heater sleeve functional? Yes No N/A NOTES: The site does not have sensor heaters due to typical warm ambient temperatures. The crossarm alignment was adjusted. The sensor was replaced.

10 CLIENT SITE NAME SOLAR RADIATION SENSOR VERIFICATION & CALIBRATION NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 Solar Radiation Reference MANUFACTURER MODEL SERIAL NUMBER EXPIRATION DATE LiCor Pyranometer PY /2/217 MULTIPLIER 2. Serial Number Translator Logger Type ESC LiCor Pyranometer PY92131 Climatronics 354 High Input (V) 5. Low Input (V). High Output Low Output. LiCor Pyranometer Serial Number PY92131 Translator Climatronics 354 Logger Type High Input (V) 5. ESC Low Input (V). High Output Low Output. CALIBRATION ACCEPTANCE CRITERIA (<=) Difference from CTS (%) 5% DATA ACCEPTANCE CRITERIA (<=) Difference from CTS (%) 1% Solar Radiation Hour CTS (W/m 2 ) DAS (W/m 2 ) Difference % % % % % MEAN ABS % DIFF 1.4% V DARK RESPONSE DAS (W/m 2 ) 1 Sensor found clean? Yes No Sensor found level? Yes No Solar Radiation Hour CTS (W/m 2 ) DAS (W/m 2 ) Difference V DARK RESPONSE DAS (W/m 2 ) MEAN ABS % DIFF NOTES: No maintenance was performed.

11 PRECIPITATION SENSOR VERIFICATION & CALIBRATION CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 MANUFACTURER MODEL SERIAL NUMBER Precipitation Reference Texas Electronics Funnel and Cylinder NA EXPIRATION DATE Serial Number Climatronics Serial Number Climatronics CALIBRATION ACCEPTANCE CRITERIA (<=) Difference from Input Volume (%) 5% DATA ACCEPTANCE CRITERIA (<=) Difference from Input Volume (%) 1% X Reference Chart Input Volume (ml) Climatronics Climatronics G-H 158 Diameter (in.) mm/tip ml/tip Met One Met One RM Young Texas Electronics TR-525I-HT DAS target Conversions Value Units Value 1. inch mm 1. Units mm inch Reference (ml) Target (mm) Precipitation DAS (mm) Difference % Heater functional? Yes No N/A Sensor found level? Yes No Sensor found clean? Yes No Precipitation Reference (ml) Target (mm) DAS (mm) Difference 93 NOTES: No maintenance was performed.

12 CASTNET FLOW SYSTEM VERIFICATION & CALIBRATION CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 MFC High Flow Reference MANUFACTURER MODEL SERIAL NUMBER Bios Definer 22H EXPIRATION DATE 1/3/218 MFC Serial Number Alicat MC-1SLPM-D-PCV MFC Serial Number Alicat MC-1SLPM-D-PCV Pump Thomas 17CA18 Serial Number Flow Target 3. ENTER FLOWS IN SLPM Pump Serial Number Thomas 17CA MFC Display Linear MFC VDC Linear Regression Regression Date 7/26/217 Setpoint Slope 3. Setpoint Slope Intercept Intercept ESC Logger Scaling High Input (V) Low Input (V) High Output (LPM) Low Output (LPM) Operational Checks Vacuum DAS Flow MFC Flow Flow Standard Target 19 inhg Flow Standard Rotometer MFC Display MFC Volts DC DAS Display Difference Value % Pump Off. SLPM Leak Test. SLPM SLPM % 2 (low) 2.5 SLPM % 3 (target) 3. SLPM % 4 (high) 3.5 SLPM % 5 4. SLPM % MAX > 4. SLPM % Leak Test Results Flow (SLPM).2 *Note: A leak is present if the difference between the zero and leak test value is greater than.1 lpm Recalibration Not Required *Note: A calibration is required if the difference between the transfer standard and the DAS value is greater than +/- 2.% at the target setting or greater than +/- 2.5% at either the low or high point NEW CALIBRATION FACTORS MFC Display Linear MFC VDC Linear Regression Regression ESC Logger Scaling Setpoint Slope Intercept Setpoint Slope Intercept High Input (V) Low Input (V) High Output (LPM) Correlation 1. Correlation 1. Low Output (LPM).14 Target Flow Standard Rotometer MFC Display MFC Volts DC DAS Display Difference Value % Pump Off. SLPM Leak Test. SLPM SLPM % 2 (low) 2.5 SLPM % 3 (target) 3. SLPM % 4 (high) 3.5 SLPM % 5 4. SLPM % MAX > 4. SLPM % Leak Test Results Flow (SLPM).2 *Note: A leak is present if the difference between the zero and leak test value is greater than.1 lpm Operational Checks Vacuum 19 inhg DAS Flow 3. MFC Flow 3. Flow Standard 3. NOTES: The pump was rebuilt and the internal filter replaced. The logger configuration was updated according to the new scaling values.

13 OZONE ANALYZER VERIFICATION & CALIBRATION () CLIENT NP Service FIELD SPECIALIST Will Yahr DATE 7/26/217 SITE NAME Big Bend NP - K-Bar Ranch Road DATE OF LAST VISIT 2/21/217 Logger Slope Correction.9964 Logger Intercept Correction CALIBRATION ACCEPTANCE CRITERIA (<=) TRANSFER STANDARD AMBIENT ANALYZER STATION REFERENCE Mean Absolute Difference (%) 3% Thermo Thermo Thermo Maximum Absolute Difference (%) 3% Linearity % of Fullscale 1% 49i 49c 49c DATA ACCEPTANCE CRITERIA (<=) Serial Number Serial Number Serial Number Mean Absolute Difference (%) 1% Coefficient 1. Coefficient 1.26 Coefficient 1. Maximum Absolute Difference (%) 1% Background. Background.2 Background. Linearity % of Fullscale 2% Cell A Intensity (Hz) 8535 Cell A Intensity (Hz) 1481 Cell A Intensity (Hz) SLOPE INT Cell B Intensity (Hz) Cell B Intensity (Hz) Cell B Intensity (Hz) 8732 Transfer Standard Correction Factors Flow A (lpm).67 Flow A (lpm).652 Flow A (lpm).661 Flow B (lpm).79 Flow B (lpm).678 Flow B (lpm).676 Full Scale (ppb) 25 Pressure (mmhg) Pressure (mmhg) Pressure (mmhg) 69.3 Linear Regression Plot Bench Temp ( C) 31.6 Bench Temp ( C) 32.8 Bench Temp ( C) 33.4 Bench Lamp Temp ( C) 53.5 Bench Lamp Temp ( C) 56.1 Bench Lamp Temp ( C) 56.7 Ozone Lamp Temp ( C) 67.7 Ozone Lamp Temp ( C) 71. Ozone Lamp Temp ( C) - Ozone Source X Ozone Source Transfer Standard Level LEVEL 2 Transfer Standard Level LEVEL 3 O3 LAMP TRANSFER STANDARD AMBIENT ANALYZER STATION REFERENCE POINT TARGET % or mv Display Corrected DAS Diff %Diff Linearity % DAS Diff %Diff Linearity % ZERO.% N/A -.1% N/A.1% % % -.2% % -.3% % %.% %.4% % %.1% %.% % %.2% %.2% % %.1% % -.3% ZERO.% N/A -.1%. -.3 N/A -.1% Mean ABS % Diff.7% Mean ABS % Diff 1.% Max ABS % Difference 1.3% Max ABS % Difference 1.7% Analog Test Analyzer DAS Reference DAS Slope 1.8 Slope 1.14 Zero Full Scale Line Loss Test Analyzer Display Span (site tubing) NA Span (bypass tubing) NA % P/F ###### ###### Y-Intercept -.9 Y-Intercept -.51 Correlation 1. Correlation 1. NOTES: The analog outs were not adjusted. The tubing was replaced so no line loss test was ran. The ozone anlyzer was calibrated. Analyzer DAS (ppb) Residuals Plot Residual (ppb) y = 1.98x Transfer Standard (ppb) R² = Regression Concentration Value (ppb)

14 CLIENT NP Service FIELD SPECIALIST Will Yahr DATE 7/26/217 SITE NAME Big Bend NP - K-Bar Ranch Road DATE OF LAST VISIT 2/21/217 Logger Intercept Correction CALIBRATION ACCEPTANCE CRITERIA (<=) TRANSFER STANDARD AMBIENT ANALYZER STATION REFERENCE Mean Absolute Difference (%) 3% Thermo Thermo Thermo Maximum Absolute Difference (%) 3% Linearity % of Fullscale 1% 49i 49c 49c DATA ACCEPTANCE CRITERIA (<=) Serial Number Serial Number Serial Number Mean Absolute Difference (%) 1% Coefficient 1. Coefficient 1.15 Coefficient 1. Maximum Absolute Difference (%) 1% Background. Background -.1 Background. Linearity % of Fullscale 2% Cell A Intensity (Hz) Cell A Intensity (Hz) Cell A Intensity (Hz) Cell B Intensity (Hz) Cell B Intensity (Hz) Cell B Intensity (Hz) Transfer Standard Correction Factors.9929 Flow A (lpm).671 Flow A (lpm).65 Flow A (lpm).665 Flow B (lpm).75 Flow B (lpm).674 Flow B (lpm).677 Full Scale (ppb) 25 Pressure (mmhg) 7.1 Pressure (mmhg) Pressure (mmhg) Linear Regression Plot Bench Temp ( C) 33.6 Bench Temp ( C) 33.4 Bench Temp ( C) 35.7 Bench Lamp Temp ( C) 53.5 Bench Lamp Temp ( C) 56.1 Bench Lamp Temp ( C) 56.7 Ozone Lamp Temp ( C) 67.7 Ozone Lamp Temp ( C) 71. Ozone Lamp Temp ( C) - Transfer Standard Level LEVEL 2 Transfer Standard Level POINT TARGET Zero Full Scale 25 OZONE ANALYZER VERIFICATION & CALIBRATION () Ozone Source X Ozone Source Logger Slope Correction 1.8 LEVEL 3 O3 LAMP TRANSFER STANDARD AMBIENT ANALYZER STATION REFERENCE % or mv Display Corrected DAS Diff %Diff Linearity % DAS Diff %Diff Linearity % ZERO.% N/A -.1% N/A.% % %.% %.2% % %.% % -.2% % %.% % -.1% % % -.1% % -.2% % %.% %.% ZERO.% N/A.2% N/A.2% Mean ABS % Diff 1.2% Mean ABS % Diff.4% Max ABS % Difference 1.3% Max ABS % Difference.7% Analog Test Analyzer DAS Reference DAS Slope 1.11 Slope Y-Intercept.2 Y-Intercept.5 25 Correlation 1. Correlation Residuals Plot Residual (ppb) Analyzer DAS (ppb) SLOPE INT y = 1.4x Transfer Standard (ppb) R² = Regression Concentration Value (ppb) NOTES:

15 CALIBRATION AND VERIFICATION STANDARDS CLIENT SITE NAME NP Service FIELD SPECIALIST Big Bend NP - K-Bar Ranch Road Will Yahr DATE DATE OF LAST VISIT 7/26/217 2/21/217 MANUFACTURER MODEL SERIAL # Calibration Expiration Date Ozone Transfer Standard Thermo 49i /11/218 MFC High Flow Reference Bios Definer 22H /3/218 MFC Low Flow Reference NA Temperature Reference Eutechnics /11/217 AT/RH Sensor Reference Rotronic HG /27/217 Barometric Pressure Reference NA Wind Speed Reference (high rpm) RM Young 1882A/1883A CA4268 5/16/218 Wind Speed Reference (low rpm) NA Wind Speed Torque Gauge RM Young NA Wind Direction Alignment Reference Brunton Transit Wind Direction Linearity Reference NA 45 Degree Disc NA Wind Direction Torque Gauge RM Young NA Solar Radiation Reference Multiplier 2. LiCor Pyranometer PY /2/217 UV Radiation Reference Multiplier NA Precipitation Reference Volume 93 ml Texas Electronics Funnel and Cylinder NA Voltage Measurement Reference Fluke Multimeter Voltage Source NA PM Flow Standard #1 PM Flow Standard #2 PM Flow Standard #3 PM Flow Standard #4 PM Temperature Standard #1 PM Temperature Standard #2 PM Temperature Standard #3 PM Temperature Standard #4 PM Barometric Pressure Standard #1 PM Barometric Pressure Standard #2 PM Barometric Pressure Standard #3 PM Barometric Pressure Standard #4 TEOM MTV Standard HiVol Direct Flow Standard HiVol Orifice Plate Orifice Manometer Stagnation Manometer

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