Date Printed: 1/1/2026 01:30 Daily Summary Report Site: Clemmons Middle 12/31/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 B 3.9 6.6 2.7 01:00 B 4.1 7.0 2.9 02:00 B 3.9 6.8 2.8 03:00 B 3.6 6.6 3.0 04:00 B 3.3 6.3 2.9 05:00 B 3.3 6.2 2.8 06:00 B 3.4 5.9 2.5 07:00 B 3.1 5.6 2.4 08:00 B 3.1 6.1 3.0 09:00 B 2.7 5.5 2.7 10:00 B 2.1 4.8 2.6 11:00 B 1.7 4.4 2.6 12:00 B 1.6 4.8 3.1 13:00 B 1.6 3.9 2.2 14:00 B 1.5 4.5 2.9 15:00 B 1.5 4.2 2.7 16:00 B 1.6 4.3 2.6 17:00 B 1.6 5.8 4.2 18:00 B 2.4 6.6 4.2 19:00 B 3.6 8.1 4.4 20:00 B 5.0 10.7 5.7 21:00 B 4.1 9.5 5.3 22:00 B 5.3 10.2 4.8 23:00 B 5.9 10.6 4.7 Average 3.0 6.4 3.3 Max B 5.9 10.7 5.7 Max Hour 23:00 20:00 20:00 Min B 1.5 3.9 2.2 Count 0 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 % Error Date Printed: 1/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 12/31/2025 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 B .3 4.5 4.9 .0 01:00 B .3 5.1 5.4 .0 02:00 B .4 6.9 7.3 .0 03:00 B .4 7.9 8.4 .0 04:00 B .3 7.0 7.4 .0 05:00 B .3 10.2 10.6 .0 06:00 B .2 4.4 4.6 -.1 07:00 B .3 4.3 4.7 -.1 08:00 B .8 6.1 6.9 .0 09:00 B .6 2.8 3.5 .0 10:00 B .7 2.2 2.9 .0 11:00 B .6 1.9 2.6 .0 12:00 B .5 1.8 2.3 .0 D 13:00 B .5 2.0 2.6 D 14:00 B .3 2.0 2.4 .0 D 15:00 B .3 C 1.9 C 2.3 C .0 16:00 B C C C .0 17:00 B .4 C 5.5 C 6.0 C .0 18:00 B .2 8.4 8.7 .0 19:00 B .2 9.3 9.5 .0 C 20:00 B .2 10.5 10.8 C 21:00 B .4 13.4 13.8 .1 C 22:00 B .5 14.1 14.6 .1 23:00 B .2 7.6 7.8 .1 Average .3 6.0 6.5 .0 Max B .8 14.1 14.6 .1 Max Hour 08:00 22:00 22:00 23:00 Min B .2 1.8 2.3 -.1 Count 0 23 23 23 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 31-Dec-2025 15:46:00 16:11:00 67.6 70 -3.38% GPT-PS 31-Dec-2025 15:46:00 16:18:00 0.5 0.0 .55 GPTZ 31-Dec-2025 15:46:00 16:38:00 216.1 225 -3.93% GPT-PREC 31-Dec-2025 15:46:00 17:08:00 151.3 155 -2.39% NO2 GPT-PREC 31-Dec-2025 15:46:00 17:08:00 65.7 70 -6.1% NO2 Precision NO2_Diff PRECDIFF 31-Dec-2025 17:15:00 17:15:05 64.8 65.731 -1.34% NOx NOx_Auto NO-PREC 31-Dec-2025 15:46:00 16:11:00 67.4 70 -3.71% SO2 SO2_Auto ZERO 31-Dec-2025 19:46:00 20:11:00 -0.1 0.0 -.16 SPAN 31-Dec-2025 19:46:00 20:36:00 86 90 -4.41% PREC 31-Dec-2025 19:46:00 21:01:00 38.2 40 -4.28% Date Printed: 1/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 12/31/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.8 8.3 3.9 01:00 4.3 6.9 2.9 02:00 4.1 6.7 2.9 03:00 3.7 5.9 2.5 04:00 3.6 6.2 2.9 05:00 3.9 7.1 3.6 06:00 3.6 6.4 3.2 07:00 3.7 6.3 3.0 08:00 3.1 5.7 2.8 09:00 2.7 7.5 5.1 10:00 2.4 6.0 3.8 11:00 2.2 4.8 2.7 12:00 2.3 7.8 5.7 13:00 1.9 5.5 3.6 14:00 1.7 6.8 5.2 15:00 1.5 4.3 2.9 16:00 1.6 3.9 2.4 17:00 2.0 5.5 3.6 18:00 2.8 6.4 3.8 19:00 3.2 7.1 4.1 20:00 4.5 8.8 4.6 21:00 5.4 10.1 5.0 22:00 5.9 10.8 5.3 23:00 6.0 10.8 5.1 Average 3.3 6.9 3.7 Max 6.0 10.8 5.7 Max Hour 23:00 23:00 12:00 Min 1.5 3.9 2.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.28% Date Printed: 1/1/2026 01:30 Daily Summary Report Site: Union Cross 12/31/2025 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 B 735.8 29.9 10.9 01:00 B 735.7 29.4 10.6 02:00 B 735.6 28.7 10.6 03:00 B 735.4 28.2 10.0 04:00 B 735.5 27.4 9.7 05:00 B 735.5 27.4 9.4 06:00 B 735.7 27.3 9.7 07:00 B 735.9 28.8 12.9 08:00 B 735.9 32.8 15.1 09:00 B 736.1 36.4 16.2 10:00 B 736.1 39.2 18.4 11:00 B 735.2 41.8 20.5 12:00 B 734.4 44.4 22.2 13:00 B 733.6 46.3 23.5 14:00 B 733.2 48.3 25.2 15:00 B 733.1 48.1 25.1 16:00 B 733.2 47.3 24.8 17:00 B 733.2 45.8 24.1 18:00 B 733.1 43.9 23.3 19:00 B 733.0 42.7 22.7 20:00 B 733.0 41.3 21.9 21:00 B 732.6 39.6 21.4 22:00 B 732.2 38.3 21.4 23:00 B 731.6 37.6 21.1 Average 734.3 37.5 17.9 Max B 736.1 48.3 25.2 Max Hour 10:00 14:00 14:00 Min B 731.6 27.3 9.4 Count 0 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 31-Dec-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 31-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