Date Printed: 12/22/2025 01:30 Daily Summary Report Site: Clemmons Middle 12/21/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 B 6.5 11.5 5.0 01:00 B 7.5 13.6 6.0 02:00 B 7.3 12.4 5.0 03:00 B 7.9 13.0 5.1 04:00 B 9.0 13.9 4.9 05:00 B 8.2 13.5 5.3 06:00 B 8.6 13.8 5.1 07:00 B 8.3 13.8 5.5 08:00 B 9.2 14.2 5.0 09:00 B 10.4 16.1 5.6 10:00 B 9.5 16.1 6.6 11:00 B 7.5 16.1 8.6 12:00 B 4.7 12.4 7.7 13:00 B 2.4 5.9 3.4 14:00 B 1.5 4.3 2.8 15:00 B 1.4 4.4 3.0 16:00 B 9.4 18.8 9.3 17:00 B 3.9 8.8 4.9 18:00 B 8.1 12.7 4.6 19:00 B 30.2 37.0 6.8 20:00 B 12.6 18.6 5.9 21:00 B 9.5 14.7 5.2 22:00 B 5.7 9.0 3.2 23:00 B 5.4 8.5 3.0 Average 8.1 13.4 5.3 Max B 30.2 37.0 9.3 Max Hour 19:00 19:00 16:00 Min B 1.4 4.3 2.8 Count 0 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 % Error Date Printed: 12/22/2025 01:30 Daily Summary Report Site: Hattie Avenue (A) 12/21/2025 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 B .5 8.1 8.7 .4 01:00 B .3 7.8 8.2 .1 02:00 B .7 12.7 13.4 .0 03:00 B .6 15.9 16.6 .0 04:00 B .7 11.6 12.4 .0 05:00 B .8 11.4 12.2 .0 06:00 B .4 9.9 10.4 .0 07:00 B .8 11.8 12.6 .0 08:00 B 5.3 14.1 19.5 .0 09:00 B 2.3 10.5 12.8 .0 10:00 B 3.7 8.8 12.6 .0 11:00 B 1.0 5.3 6.3 .0 12:00 B .5 3.2 3.7 .0 13:00 B .4 2.7 3.1 .0 14:00 B .2 3.2 3.4 -.1 15:00 B .2 C 4.4 C 4.7 C -.1 16:00 B C C C -.1 17:00 B .3 C 12.6 C 12.9 C .0 18:00 B 6.0 35.4 41.4 .0 19:00 B 18.0 35.9 54.0 .2 C 20:00 B 2.8 19.6 22.4 C 21:00 B .1 4.0 4.1 -.1 C 22:00 B .1 7.2 7.4 -.1 23:00 B .2 10.8 11.1 -.1 Average 1.9 11.6 13.6 .0 Max B 18.0 35.9 54.0 .4 Max Hour 19:00 19:00 19:00 00:00 Min B .1 2.7 3.1 -.1 Count 0 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 21-Dec-2025 15:46:00 16:11:00 67.1 70 -4.11% GPT-PS 21-Dec-2025 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 21-Dec-2025 15:46:00 16:38:00 215.3 225 -4.31% GPT-PREC 21-Dec-2025 15:46:00 17:08:00 150.1 155 -3.12% NO2 GPT-PREC 21-Dec-2025 15:46:00 17:08:00 66.4 70 -5.12% NO2 Precision NO2_Diff PRECDIFF 21-Dec-2025 17:15:00 17:15:05 65.1 66.419 -1.92% NOx NOx_Auto NO-PREC 21-Dec-2025 15:46:00 16:11:00 67.2 70 -3.96% SO2 SO2_Auto ZERO 21-Dec-2025 19:46:00 20:11:00 -0.2 0.0 -.23 SPAN 21-Dec-2025 19:46:00 20:36:00 85.1 90 -5.36% PREC 21-Dec-2025 19:46:00 21:01:00 37.9 40 -5.14% Date Printed: 12/22/2025 01:30 Daily Summary Report Site: Hattie Avenue (B) 12/21/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.0 12.2 5.7 01:00 7.1 12.0 5.4 02:00 7.4 12.0 5.1 03:00 7.9 11.8 4.5 04:00 8.6 14.5 6.5 05:00 8.5 14.0 6.2 06:00 9.2 14.3 5.7 07:00 8.7 13.3 5.3 08:00 9.0 14.5 6.1 09:00 8.6 14.7 6.5 10:00 7.4 14.9 7.7 11:00 6.3 13.0 6.8 12:00 4.1 9.1 5.1 13:00 2.2 5.6 3.4 14:00 1.7 5.0 3.3 15:00 1.6 4.0 2.5 16:00 2.0 4.2 2.2 17:00 5.5 10.0 4.8 18:00 5.2 12.2 7.4 19:00 7.2 14.4 7.9 20:00 4.7 8.6 4.2 21:00 2.8 4.7 2.1 22:00 3.3 5.6 2.6 23:00 3.2 6.2 3.3 Average 5.8 10.4 5.0 Max 9.2 14.9 7.9 Max Hour 06:00 10:00 19:00 Min 1.6 4.0 2.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.14% Date Printed: 12/22/2025 01:30 Daily Summary Report Site: Union Cross 12/21/2025 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 B 739.1 42.1 23.3 01:00 B 739.4 40.9 23.0 02:00 B 739.5 39.8 22.4 03:00 B 739.6 40.0 22.3 04:00 B 739.4 39.9 22.5 05:00 B 739.4 39.7 22.8 06:00 B 739.6 38.5 22.6 07:00 B 740.0 37.7 22.6 08:00 B 740.9 39.1 23.9 09:00 B 741.5 43.4 25.9 10:00 B 742.1 46.9 28.4 11:00 B 742.3 52.0 29.0 12:00 B 742.1 53.4 26.7 13:00 B 742.2 54.1 22.2 14:00 B 742.4 53.1 21.4 15:00 B 742.8 52.0 20.8 16:00 B 743.2 51.1 19.8 17:00 B 743.7 49.4 18.4 18:00 B 744.6 45.4 16.1 19:00 B 745.2 45.9 16.7 20:00 B 745.9 44.1 16.6 21:00 B 746.6 44.2 15.4 22:00 B 747.2 43.3 14.1 23:00 B 747.4 41.9 13.0 Average 742.3 44.9 21.2 Max B 747.4 54.1 29.0 Max Hour 23:00 13:00 11:00 Min B 739.1 37.7 13.0 Count 0 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Dec-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Dec-2025 22:50:00 23:50:00 0 0.0 0.00 Flags T Out of Control A Arithmetic Error (math calculation error) t Out of Control (Partial) S Site Visit s Site Activity > Some Data Missing + Max Exceeded - Min Exceeded < Logger Invalid ? Suspect a Audit B Bad Status C Calibration c Ceiling Limit D Channel Disabled E Edited e Site Malfunction f Floor Limit H High-High Alarm h High Alarm I Invalidated By Edit J High Rate of Change Exceeded L Low-Low Alarm l Low Alarm M Maintenance m Marked Maint by edit O Overrange o Other P Power Failure p Precision Check Q Quality Assured R Rate of Change Exceeded V Dig Info#1 W Dig Info#2 X Dig Info#3 Y Dig Info#4 Z Dig Info#5 z Zero Adjusted F Boiler Offline j Low Rate of Change Exceeded