Date Printed: 8/6/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/5/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .006 7.5 20.4 12.9 01:00 .004 7.9 21.1 13.2 02:00 .005 8.0 21.4 13.4 03:00 .007 8.0 19.8 11.7 04:00 .008 7.5 18.9 11.3 05:00 .008 7.3 18.0 10.7 06:00 .010 6.9 16.0 9.1 07:00 D 5.8 13.3 7.4 08:00 D 5.4 9.8 4.4 09:00 .032 D 4.9 9.8 4.8 10:00 .037 5.2 10.7 5.5 11:00 .039 B 6.5 11.5 5.0 12:00 .043 6.9 13.1 6.2 13:00 .041 8.4 12.4 4.0 14:00 .039 6.6 10.9 4.3 15:00 .040 7.1 12.4 5.3 16:00 .039 7.2 12.1 4.9 17:00 .040 6.6 12.3 5.6 18:00 .030 6.8 18.1 11.2 19:00 .018 7.3 19.5 12.1 20:00 .020 7.1 13.8 6.7 21:00 .027 8.0 26.8 18.7 22:00 .021 C 7.6 29.5 21.8 23:00 C 7.7 17.5 9.7 Average .024 7.0 16.2 9.1 Max .043 8.4 29.5 21.8 Max Hour 12:00 13:00 22:00 22:00 Min .004 4.9 9.8 4.0 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 05-Aug-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 05-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.81% Date Printed: 8/6/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/5/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .017 .2 2.1 2.3 .1 01:00 .016 .2 3.2 3.5 .1 02:00 .019 .2 1.9 2.2 .1 03:00 .020 .2 1.6 1.9 .1 04:00 .020 .2 1.7 1.9 .1 05:00 .019 .2 1.7 2.0 .1 06:00 .018 .4 2.1 2.5 .1 07:00 .020 .8 2.4 3.3 .1 08:00 .032 .5 2.5 3.1 .1 09:00 .038 .4 1.6 2.1 .1 10:00 .043 B B B .1 11:00 .046 B B B .2 12:00 .046 B B B .2 13:00 .046 B B B .2 14:00 .047 B B B .2 15:00 .048 .2 C 1.5 C 1.8 C .2 16:00 .046 C C C .2 17:00 .043 .2 C 1.9 C 2.1 C .2 18:00 .036 .2 3.7 3.9 .2 19:00 .030 .2 6.1 6.3 .2 C 20:00 .031 .1 2.4 2.5 C 21:00 .030 .1 2.4 2.6 .1 C 22:00 .032 C .1 2.3 2.5 .1 23:00 C .1 2.7 2.9 .1 Average .032 .2 2.4 2.7 .1 Max .048 .8 6.1 6.3 .2 Max Hour 15:00 07:00 19:00 19:00 19:00 Min .016 .1 1.5 1.8 .1 Count 23 18 18 18 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 05-Aug-2026 15:46:00 16:11:00 66.2 70 -5.39% GPT-PS 05-Aug-2026 15:46:00 16:18:00 0.5 0.0 .55 GPTZ 05-Aug-2026 15:46:00 16:38:00 213.5 225 -5.08% GPT-PREC 05-Aug-2026 15:46:00 17:08:00 148.7 155 -4.03% NO2 GPT-PREC 05-Aug-2026 15:46:00 17:08:00 65.1 70 -6.9% NO2 Precision NO2_Diff PRECDIFF 05-Aug-2026 17:15:00 17:15:05 64.8 65.17 -.55% NOx NOx_Auto NO-PREC 05-Aug-2026 15:46:00 16:11:00 66.2 70 -5.39% Ozone O3_Auto ZERO 05-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 05-Aug-2026 22:50:00 23:50:00 0.068 0.07 -2.97% SO2 SO2_Auto ZERO 05-Aug-2026 19:46:00 20:11:00 0 0.0 .05 SPAN 05-Aug-2026 19:46:00 20:36:00 90.2 90 .28% PREC 05-Aug-2026 19:46:00 21:01:00 39.6 40 -.8% Date Printed: 8/6/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/5/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.1 20.0 11.4 01:00 8.3 21.5 12.7 02:00 6.9 17.4 10.1 03:00 5.5 12.9 7.1 04:00 5.6 15.0 9.1 05:00 4.2 9.6 5.2 06:00 4.4 10.4 5.8 07:00 4.6 9.9 5.1 08:00 4.7 10.6 5.6 09:00 5.1 11.3 5.7 10:00 5.5 11.2 5.3 11:00 6.2 11.9 5.2 12:00 6.8 13.6 6.1 13:00 7.5 14.9 6.6 14:00 8.9 17.2 7.5 15:00 9.4 15.5 5.3 16:00 8.3 14.7 5.7 17:00 8.1 14.4 5.7 18:00 8.7 16.8 7.4 19:00 9.4 17.3 7.3 20:00 8.5 16.9 7.8 21:00 7.9 16.9 8.5 22:00 6.7 25.6 18.4 23:00 7.4 16.9 9.1 Average 6.9 15.1 7.6 Max 9.4 25.6 18.4 Max Hour 19:00 22:00 22:00 Min 4.2 9.6 5.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.8% Date Printed: 8/6/2026 01:30 Daily Summary Report Site: Union Cross 8/5/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .009 737.9 72.3 71.9 01:00 .011 737.7 72.1 72.0 02:00 .017 737.8 72.0 71.8 03:00 .018 737.8 71.9 71.8 04:00 .016 738.2 72.0 72.0 05:00 .010 738.7 71.9 71.9 06:00 .014 739.0 72.1 71.9 07:00 .020 739.3 74.1 71.1 08:00 .028 739.6 76.1 70.3 09:00 .036 739.7 77.6 70.1 10:00 .039 740.0 78.9 70.5 11:00 .039 740.0 81.1 71.0 12:00 .040 739.8 82.9 71.7 13:00 .043 739.4 84.1 71.8 14:00 .044 738.9 84.5 71.9 15:00 .043 738.5 84.9 71.7 16:00 .042 738.5 85.6 72.0 17:00 .040 738.5 83.9 72.1 18:00 .035 738.7 82.3 72.5 19:00 .029 738.9 80.2 72.9 20:00 .027 739.2 78.5 72.7 21:00 .027 739.7 77.6 73.2 22:00 .025 C 740.1 76.8 73.4 23:00 C 740.2 76.0 73.3 Average .028 739.0 77.8 71.8 Max .044 740.2 85.6 73.4 Max Hour 14:00 23:00 16:00 22:00 Min .009 737.7 71.9 70.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 05-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 05-Aug-2026 22:50:00 23:50:00 0.069 0.069 -.53% 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