Date Printed: 8/12/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/11/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .004 11.1 21.7 10.5 01:00 .001 11.2 24.1 12.8 02:00 .000 11.2 23.7 12.4 03:00 .000 11.0 24.2 13.2 04:00 .000 10.7 23.3 12.6 05:00 .000 B 10.3 23.2 12.8 06:00 .001 8.7 17.8 9.0 07:00 .004 7.9 17.6 9.6 08:00 .016 8.7 18.2 9.4 09:00 .032 8.9 17.6 8.6 10:00 .039 9.1 17.5 8.4 11:00 .042 9.5 16.3 6.7 12:00 .042 9.7 18.1 8.3 13:00 .042 10.4 18.8 8.4 14:00 .037 12.6 30.1 17.5 15:00 .033 12.4 29.8 17.3 16:00 .038 12.5 45.3 32.7 17:00 .037 10.2 26.3 16.0 18:00 .031 9.4 21.6 12.1 19:00 .029 6.5 16.7 10.2 20:00 .025 6.5 19.0 12.5 21:00 .019 7.1 20.2 13.0 22:00 .019 B 7.2 20.3 13.0 23:00 C 7.8 21.4 13.6 Average .021 9.6 22.2 12.5 Max .042 12.6 45.3 32.7 Max Hour 13:00 14:00 16:00 16:00 Min .000 6.5 16.3 6.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 11-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 11-Aug-2026 22:50:00 23:50:00 0.067 0.07 -4.03% Date Printed: 8/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/11/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .014 .2 4.7 4.9 .1 01:00 .010 .3 6.3 6.6 .1 02:00 .011 .2 4.2 4.4 .1 03:00 .011 .4 4.1 4.6 .1 04:00 .010 .3 4.1 4.4 .1 05:00 .007 1.0 6.8 7.9 .1 06:00 .003 8.1 8.5 16.6 .2 07:00 .009 10.4 10.3 20.7 .3 08:00 .021 2.7 8.4 11.2 .2 09:00 .038 .5 3.0 3.6 .2 10:00 .042 .3 1.9 2.3 .2 11:00 .042 .8 1.8 2.6 .2 12:00 .043 .2 1.4 1.7 .2 13:00 .043 .2 1.9 2.2 .2 14:00 .042 .3 2.5 2.8 .2 15:00 .042 .2 C 3.6 C 3.9 C .2 16:00 .040 C C C .2 17:00 .037 .4 C 4.1 C 4.5 C .1 18:00 .028 .2 5.2 5.5 .1 19:00 .027 .2 3.2 3.4 .1 C 20:00 .024 .2 3.1 3.3 C 21:00 .019 .2 3.7 3.9 .2 C 22:00 .019 C .2 3.7 4.0 .1 23:00 C .2 2.5 2.7 .1 Average .025 1.2 4.3 5.5 .1 Max .043 10.4 10.3 20.7 .3 Max Hour 13:00 07:00 07:00 07:00 07:00 Min .003 .2 1.4 1.7 .1 Count 23 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 11-Aug-2026 15:46:00 16:11:00 65.9 70 -5.85% GPT-PS 11-Aug-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 11-Aug-2026 15:46:00 16:38:00 213 225 -5.3% GPT-PREC 11-Aug-2026 15:46:00 17:08:00 148.5 155 -4.16% NO2 GPT-PREC 11-Aug-2026 15:46:00 17:08:00 65.4 70 -6.52% NO2 Precision NO2_Diff PRECDIFF 11-Aug-2026 17:15:00 17:15:05 64.5 65.438 -1.4% NOx NOx_Auto NO-PREC 11-Aug-2026 15:46:00 16:11:00 66 70 -5.65% Ozone O3_Auto ZERO 11-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 11-Aug-2026 22:50:00 23:50:00 0.068 0.07 -2.57% SO2 SO2_Auto ZERO 11-Aug-2026 19:46:00 20:11:00 0 0.0 .03 SPAN 11-Aug-2026 19:46:00 20:36:00 89.6 90 -.33% PREC 11-Aug-2026 19:46:00 21:01:00 39.5 40 -1.21% Date Printed: 8/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/11/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.8 20.3 9.0 01:00 10.6 21.8 10.6 02:00 10.2 20.4 9.7 03:00 10.1 22.6 12.0 04:00 10.1 20.2 9.6 05:00 10.1 19.5 8.9 06:00 10.0 20.6 10.1 07:00 10.1 22.2 11.3 08:00 9.9 21.1 10.3 09:00 9.6 B 18.4 B 7.8 B 10:00 B B B 11:00 9.8 20.0 9.1 12:00 10.7 19.9 8.2 13:00 11.0 21.2 9.0 14:00 11.2 19.5 7.3 15:00 12.2 19.6 6.5 16:00 12.2 23.6 10.6 17:00 10.9 28.9 17.3 18:00 10.3 25.7 14.7 19:00 8.5 23.6 14.5 20:00 7.7 19.6 11.5 21:00 7.3 17.4 9.8 22:00 7.9 19.9 11.5 23:00 7.8 19.1 10.9 Average 9.9 21.0 10.4 Max 12.2 28.9 17.3 Max Hour 16:00 17:00 17:00 Min 7.3 17.4 6.5 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.21% Date Printed: 8/12/2026 01:30 Daily Summary Report Site: Union Cross 8/11/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .014 738.3 74.2 71.6 01:00 .011 738.0 73.6 71.5 02:00 .010 737.6 72.6 71.5 03:00 .009 737.4 72.2 71.5 04:00 .005 737.7 71.6 71.4 05:00 .003 737.8 71.3 71.1 06:00 .003 738.1 71.7 71.5 07:00 .010 737.7 75.0 71.4 08:00 .022 737.6 80.2 72.0 09:00 .036 737.6 83.7 72.7 10:00 .046 737.7 86.2 73.1 11:00 .047 737.7 87.8 72.9 12:00 .046 737.3 88.4 73.3 13:00 .048 736.7 88.6 73.6 14:00 .044 736.7 83.5 71.0 15:00 .040 736.5 82.3 72.1 16:00 .040 737.2 77.9 70.7 17:00 .036 735.9 71.9 70.7 18:00 .032 735.4 71.3 70.8 19:00 .025 737.0 71.4 71.1 20:00 .025 737.9 71.2 71.0 21:00 .022 737.3 70.6 70.3 22:00 .022 C 736.4 70.1 69.7 23:00 C 735.6 69.9 68.6 Average .025 737.2 76.5 71.4 Max .048 738.3 88.6 73.6 Max Hour 13:00 00:00 13:00 13:00 Min .003 735.4 69.9 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 11-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 11-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.39% 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