Date Printed: 7/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .030 8.0 18.4 10.3 01:00 .031 7.2 18.0 10.7 02:00 .031 7.2 19.2 11.9 03:00 .030 7.1 19.5 12.4 04:00 .027 7.3 18.8 11.5 05:00 .025 B 7.9 20.6 12.7 06:00 .022 9.4 26.2 16.7 07:00 .023 9.8 26.2 16.3 08:00 D 9.8 28.1 18.2 09:00 D 10.7 29.8 19.0 10:00 .028 D 10.5 30.0 19.4 11:00 .032 11.2 33.1 21.9 12:00 .033 11.6 36.6 24.9 13:00 .034 11.2 33.0 21.7 14:00 .032 10.2 29.4 19.1 15:00 .028 5.9 18.3 12.3 16:00 .028 3.3 11.1 7.8 17:00 .037 4.8 15.3 10.4 18:00 .038 6.1 11.5 5.4 19:00 .039 7.4 14.6 7.1 20:00 .037 7.1 14.6 7.4 21:00 .035 6.8 12.0 5.2 22:00 .032 C 5.9 10.3 4.4 23:00 B 5.1 9.6 4.5 Average .031 7.9 21.0 12.9 Max .039 11.6 36.6 24.9 Max Hour 19:00 12:00 12:00 12:00 Min .022 3.3 9.6 4.4 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 22-Jul-2026 22:50:00 23:50:00 0.066 0.07 -4.09% Date Printed: 7/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .3 1.8 2.1 .1 01:00 .031 .3 1.8 2.2 .2 02:00 .032 .2 1.9 2.1 .2 03:00 .030 .3 2.3 2.6 .2 04:00 .028 .3 2.5 2.8 .2 05:00 .025 .4 2.9 3.4 .2 06:00 .023 .5 B 2.9 B 3.4 B .2 07:00 .024 B B B .3 08:00 .028 B B B .3 09:00 .030 B B B .3 10:00 .030 B B B .3 11:00 .035 .5 B 2.2 B 2.8 B .3 12:00 .037 .3 1.7 2.1 .2 13:00 .036 .3 1.8 2.2 .2 14:00 .034 .2 2.7 3.0 .2 15:00 .030 .5 C 4.4 C 4.9 C .1 16:00 .031 C C C .1 17:00 .033 .2 C 2.9 C 3.2 C .1 18:00 .035 .2 3.3 3.5 .1 19:00 .039 .1 2.2 2.3 .1 C 20:00 .033 .1 4.5 4.7 C 21:00 .033 .1 3.1 3.2 .2 C 22:00 .035 C .1 3.2 3.4 .1 23:00 C .1 3.4 3.5 .1 Average .031 .2 2.7 3.0 .1 Max .039 .5 4.5 4.9 .3 Max Hour 19:00 15:00 20:00 15:00 11:00 Min .023 .1 1.7 2.1 .1 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 22-Jul-2026 15:46:00 16:11:00 66.3 70 -5.22% GPT-PS 22-Jul-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 22-Jul-2026 15:46:00 16:38:00 213.9 225 -4.91% GPT-PREC 22-Jul-2026 15:46:00 17:08:00 148.8 155 -3.95% NO2 GPT-PREC 22-Jul-2026 15:46:00 17:08:00 65.2 70 -6.76% NO2 Precision NO2_Diff PRECDIFF 22-Jul-2026 17:15:00 17:15:05 65 65.271 -.3% NOx NOx_Auto NO-PREC 22-Jul-2026 15:46:00 16:11:00 66.2 70 -5.42% Ozone O3_Auto ZERO 22-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 22-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.49% SO2 SO2_Auto ZERO 22-Jul-2026 19:46:00 20:11:00 0 0.0 .01 SPAN 22-Jul-2026 19:46:00 20:36:00 90.1 90 .19% PREC 22-Jul-2026 19:46:00 21:01:00 39.9 40 -.01% Date Printed: 7/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 9.0 21.0 11.0 01:00 8.4 20.9 11.5 02:00 7.9 21.7 12.8 03:00 7.8 22.0 13.2 04:00 8.1 21.7 12.7 05:00 8.4 23.5 14.2 06:00 9.7 27.2 16.3 07:00 10.9 32.7 20.4 08:00 10.8 32.0 19.8 09:00 11.6 37.1 23.6 10:00 12.1 38.7 24.8 11:00 12.5 37.9 23.4 12:00 12.6 40.2 25.4 13:00 12.5 42.0 27.2 14:00 11.5 34.8 21.7 15:00 7.7 25.7 17.1 16:00 3.8 14.6 10.4 17:00 4.2 11.2 6.6 18:00 6.3 14.6 7.9 19:00 8.6 P 18.7 P 9.6 P 20:00 9.6 21.9 11.8 21:00 9.0 20.8 11.3 22:00 8.7 16.3 7.3 23:00 7.6 16.2 8.2 Average 9.1 25.5 15.3 Max 12.6 42.0 27.2 Max Hour 12:00 13:00 13:00 Min 3.8 11.2 6.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.01% Date Printed: 7/23/2026 01:30 Daily Summary Report Site: Union Cross 7/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .034 732.5 82.8 71.2 01:00 .034 732.5 82.1 69.2 02:00 .034 732.9 81.0 68.6 03:00 .033 732.9 79.9 69.5 04:00 .031 732.9 79.0 70.1 05:00 .028 733.2 78.4 69.8 06:00 .025 733.5 78.3 69.3 07:00 .025 734.0 78.8 69.9 08:00 .027 734.3 80.6 70.6 09:00 .029 734.4 82.7 70.2 10:00 .029 734.7 81.9 69.8 11:00 .032 734.7 84.7 71.1 12:00 .034 734.5 86.3 70.9 13:00 .032 734.2 86.3 71.2 14:00 .033 734.4 83.7 71.0 15:00 .032 734.5 81.0 71.5 16:00 .034 734.9 74.2 71.7 17:00 .038 734.9 72.5 70.8 18:00 .041 734.9 71.0 70.6 19:00 .044 735.3 70.2 69.9 20:00 .041 735.6 70.1 70.0 21:00 .040 736.1 70.4 70.4 22:00 .036 C 736.0 70.7 70.7 23:00 C 735.9 72.2 72.2 Average .033 734.3 78.2 70.4 Max .044 736.1 86.3 72.2 Max Hour 19:00 21:00 13:00 23:00 Min .025 732.5 70.1 68.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 22-Jul-2026 22:50:00 23:50:00 0.07 0.07 1.19% 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