Date Printed: 7/22/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .015 7.1 21.8 14.7 01:00 .010 7.5 23.6 16.0 02:00 .012 8.1 26.9 18.7 03:00 .009 9.4 28.7 19.2 04:00 .008 10.6 29.8 19.2 05:00 .007 10.2 29.0 18.8 06:00 .008 9.7 26.3 16.5 07:00 .016 8.1 19.8 11.6 08:00 .028 6.2 14.7 8.5 09:00 .038 5.7 15.8 10.1 10:00 .041 5.0 12.8 7.7 11:00 .045 B 6.1 15.8 9.6 12:00 .047 B 6.0 15.4 9.4 13:00 .043 6.3 17.4 11.1 14:00 .039 6.1 18.1 11.9 15:00 .037 6.4 18.7 12.2 16:00 .038 6.6 19.2 12.5 17:00 .040 6.2 17.3 11.0 18:00 .037 6.4 16.6 10.2 19:00 .035 6.3 15.6 9.2 20:00 .031 6.8 16.8 10.0 21:00 .030 7.6 17.5 9.8 22:00 .030 C 7.9 18.0 10.0 23:00 C 7.8 18.7 10.8 Average .028 7.2 19.7 12.4 Max .047 10.6 29.8 19.2 Max Hour 12:00 04:00 04:00 04:00 Min .007 5.0 12.8 7.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 21-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.54% Date Printed: 7/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .023 .2 2.5 2.7 .1 01:00 .020 .2 3.3 3.6 .1 02:00 .014 .3 5.6 6.0 .1 03:00 .014 .3 3.2 3.6 .1 04:00 .011 .4 3.6 4.1 .1 05:00 .010 .6 4.6 5.2 .1 06:00 .014 1.0 4.5 5.6 .1 07:00 D 1.2 4.0 5.3 .2 08:00 D .9 2.9 3.9 .2 09:00 .036 .6 2.5 3.1 .2 10:00 .041 .4 2.1 2.6 .2 11:00 .045 .4 2.4 2.9 .2 12:00 .047 .4 2.4 2.8 .3 13:00 .046 .4 2.1 2.6 .3 14:00 .041 .4 1.7 2.2 .2 15:00 .039 .4 C 1.8 C 2.2 C .2 16:00 .038 C C C .2 17:00 .039 .4 C 2.6 C 3.0 C .2 18:00 .037 .2 3.0 3.3 .2 19:00 .034 .2 3.6 3.8 .2 C 20:00 .032 .2 3.8 4.0 C 21:00 .032 .2 3.0 3.2 .2 C 22:00 .032 C .2 2.3 2.5 .2 23:00 C .2 2.4 2.7 .2 Average .030 .4 3.0 3.5 .1 Max .047 1.2 5.6 6.0 .3 Max Hour 12:00 07:00 02:00 02:00 13:00 Min .010 .2 1.7 2.2 .1 Count 21 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 21-Jul-2026 15:46:00 16:11:00 66.2 70 -5.35% GPT-PS 21-Jul-2026 15:46:00 16:18:00 0.5 0.0 .55 GPTZ 21-Jul-2026 15:46:00 16:38:00 214.2 225 -4.8% GPT-PREC 21-Jul-2026 15:46:00 17:08:00 149.1 155 -3.76% NO2 GPT-PREC 21-Jul-2026 15:46:00 17:08:00 65.8 70 -5.95% NO2 Precision NO2_Diff PRECDIFF 21-Jul-2026 17:15:00 17:15:05 65 65.832 -1.22% NOx NOx_Auto NO-PREC 21-Jul-2026 15:46:00 16:11:00 67 70 -4.19% Ozone O3_Auto ZERO 21-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.85% SO2 SO2_Auto ZERO 21-Jul-2026 19:46:00 20:11:00 0.1 0.0 .11 SPAN 21-Jul-2026 19:46:00 20:36:00 90.3 90 .41% PREC 21-Jul-2026 19:46:00 21:01:00 40 40 .02% Date Printed: 7/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.1 22.5 14.7 01:00 8.6 27.1 17.7 02:00 10.3 32.2 21.1 03:00 10.7 35.9 24.3 04:00 11.3 34.2 22.0 05:00 11.8 34.9 22.2 06:00 10.6 28.9 17.4 07:00 8.9 21.9 12.2 08:00 7.6 19.0 10.6 09:00 6.2 16.9 9.9 10:00 5.4 15.3 9.2 11:00 6.8 P 19.2 P 11.4 P 12:00 6.7 18.9 11.1 13:00 7.3 21.3 12.7 14:00 6.9 22.8 14.5 15:00 7.0 21.5 13.1 16:00 7.3 20.6 12.0 17:00 7.0 21.0 12.8 18:00 7.4 19.4 11.0 19:00 7.3 19.8 11.5 20:00 7.8 21.6 12.7 21:00 8.8 21.5 11.7 22:00 8.7 20.9 11.2 23:00 8.8 21.5 11.7 Average 8.1 23.2 14.1 Max 11.8 35.9 24.3 Max Hour 05:00 03:00 03:00 Min 5.4 15.3 9.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .02% Date Printed: 7/22/2026 01:30 Daily Summary Report Site: Union Cross 7/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .025 734.3 72.8 70.5 01:00 .022 734.1 73.2 71.2 02:00 .020 734.0 73.1 71.7 03:00 .016 734.0 73.1 71.9 04:00 .014 734.2 73.5 71.6 05:00 .017 734.5 73.6 71.1 06:00 .021 734.7 74.3 70.5 07:00 .028 734.7 76.6 70.0 08:00 .035 734.7 79.1 70.5 09:00 .042 734.7 81.7 71.0 10:00 .046 734.9 82.9 71.3 11:00 .045 734.6 83.9 72.4 12:00 .044 734.2 85.1 72.6 13:00 .043 733.8 87.4 73.0 14:00 .041 733.1 88.3 72.7 15:00 .040 732.6 88.3 72.2 16:00 .041 732.5 88.7 72.6 17:00 .041 732.4 88.0 72.4 18:00 .039 732.6 86.6 71.4 19:00 .038 732.6 85.3 71.3 20:00 .037 732.8 84.7 70.7 21:00 .035 733.0 83.9 70.6 22:00 .034 C 733.2 83.6 71.1 23:00 C 733.0 83.3 71.5 Average .033 733.7 81.2 71.4 Max .046 734.9 88.7 73.0 Max Hour 10:00 10:00 16:00 13:00 Min .014 732.4 72.8 70.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Jul-2026 22:50:00 23:50:00 0.07 0.07 .24% 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