Date Printed: 8/22/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .016 7.5 13.8 6.2 01:00 .013 7.6 14.5 6.9 02:00 .011 7.4 13.3 5.8 03:00 .010 7.5 14.3 6.7 04:00 .009 7.3 13.9 6.6 05:00 .016 B 5.6 12.7 7.0 06:00 .027 5.5 11.0 5.5 07:00 .030 5.6 12.6 7.0 08:00 .026 5.4 13.6 8.2 09:00 .018 5.6 17.6 11.9 10:00 .024 4.1 10.4 6.3 11:00 .031 4.5 9.2 4.7 12:00 .040 4.7 9.0 4.3 13:00 .046 4.9 9.8 4.8 14:00 .047 4.8 10.5 5.6 15:00 .046 5.3 10.2 4.8 16:00 .044 5.4 10.4 5.0 17:00 .041 5.6 9.9 4.3 18:00 .040 6.6 13.2 6.6 19:00 .041 5.2 10.9 5.6 20:00 .040 4.3 10.5 6.2 21:00 .031 5.7 14.1 8.4 22:00 .028 C 5.6 13.8 8.2 23:00 B 5.2 12.5 7.3 Average .029 5.7 12.1 6.4 Max .047 7.6 17.6 11.9 Max Hour 14:00 01:00 09:00 09:00 Min .009 4.1 9.0 4.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 21-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.82% Date Printed: 8/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .029 .2 4.2 4.5 .2 01:00 .031 .1 4.1 4.3 .2 02:00 .032 .1 3.9 4.0 .1 03:00 .029 .1 6.9 7.1 .1 04:00 .026 .2 6.6 6.8 .2 05:00 .027 .2 5.5 5.7 .3 06:00 .031 .3 2.7 3.0 .2 07:00 .032 .3 2.8 3.1 .2 08:00 .028 .5 3.2 3.7 .1 09:00 .019 .6 5.9 6.5 .1 10:00 .028 .7 2.8 3.6 .1 11:00 .028 6.3 8.8 15.2 .3 12:00 .043 .3 1.5 1.8 .1 13:00 .046 .2 1.5 1.8 .1 14:00 .048 .3 1.9 2.2 .2 15:00 .050 .2 C 1.9 C 2.2 C .2 16:00 .047 C C C .2 17:00 .046 .2 C 3.6 C 3.9 C .3 18:00 .045 .1 4.0 4.2 .4 19:00 .041 .1 3.5 3.6 .3 C 20:00 .039 .1 2.5 2.6 C 21:00 .036 .1 2.6 2.8 .2 C 22:00 .037 C .1 2.5 2.7 .1 23:00 C .2 2.3 2.5 .1 Average .035 .5 3.7 4.2 .1 Max .050 6.3 8.8 15.2 .4 Max Hour 15:00 11:00 11:00 11:00 18:00 Min .019 .1 1.5 1.8 .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 21-Aug-2026 15:46:00 16:11:00 65.6 70 -6.25% GPT-PS 21-Aug-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 21-Aug-2026 15:46:00 16:38:00 212.5 225 -5.52% GPT-PREC 21-Aug-2026 15:46:00 17:08:00 148.6 155 -4.09% NO2 GPT-PREC 21-Aug-2026 15:46:00 17:08:00 64.6 70 -7.67% NO2 Precision NO2_Diff PRECDIFF 21-Aug-2026 17:15:00 17:15:05 63.9 64.629 -1.11% NOx NOx_Auto NO-PREC 21-Aug-2026 15:46:00 16:11:00 65.8 70 -5.9% Ozone O3_Auto ZERO 21-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Aug-2026 22:50:00 23:50:00 0.068 0.07 -2.02% SO2 SO2_Auto ZERO 21-Aug-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 21-Aug-2026 19:46:00 20:36:00 89.3 90 -.75% PREC 21-Aug-2026 19:46:00 21:01:00 39.3 40 -1.75% Date Printed: 8/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.3 12.9 5.2 01:00 6.5 12.7 5.7 02:00 5.6 11.2 5.2 03:00 7.4 23.6 15.6 04:00 7.6 19.7 11.6 05:00 5.3 10.4 4.9 06:00 5.4 10.2 4.6 07:00 4.9 10.3 5.2 08:00 5.5 14.9 9.1 09:00 6.4 15.8 9.1 10:00 4.9 11.9 6.8 11:00 4.7 9.7 4.7 12:00 4.5 9.6 4.7 13:00 4.7 9.2 4.1 14:00 4.9 10.0 4.7 15:00 5.1 9.5 4.0 16:00 5.8 11.9 5.6 17:00 6.7 11.9 4.9 18:00 6.4 11.4 4.6 19:00 6.4 12.5 5.7 20:00 5.3 12.6 7.0 21:00 5.4 13.1 7.4 22:00 5.0 13.3 8.1 23:00 4.9 13.4 8.2 Average 5.6 12.5 6.5 Max 7.6 23.6 15.6 Max Hour 04:00 03:00 03:00 Min 4.5 9.2 4.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.75% Date Printed: 8/22/2026 01:30 Daily Summary Report Site: Union Cross 8/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 736.6 78.2 67.4 01:00 .028 736.4 76.8 67.4 02:00 .020 736.4 75.0 68.4 03:00 .021 736.6 74.7 67.4 04:00 .026 736.8 74.0 66.5 05:00 .030 736.8 73.5 65.6 06:00 .030 737.3 73.1 66.4 07:00 .031 737.9 73.9 66.7 08:00 .028 737.7 71.6 68.1 09:00 .023 739.2 71.4 69.2 10:00 .026 739.0 70.7 68.7 11:00 .034 738.2 73.1 68.6 12:00 .043 737.5 75.4 68.8 13:00 .047 737.2 77.7 69.2 14:00 .051 736.3 78.2 69.1 15:00 .049 736.1 77.4 69.1 16:00 .042 736.5 75.7 69.7 17:00 .044 736.8 74.3 70.1 18:00 .040 736.6 73.7 70.6 19:00 .039 736.7 71.8 68.1 20:00 .038 737.3 70.1 67.6 21:00 .035 737.5 69.4 67.3 22:00 .035 C 737.3 68.7 66.9 23:00 C 737.2 68.2 67.0 Average .034 737.1 73.6 68.0 Max .051 739.2 78.2 70.6 Max Hour 14:00 09:00 14:00 18:00 Min .020 736.1 68.2 65.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.06% 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