Date Printed: 7/25/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/24/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .027 6.9 14.0 7.1 01:00 .026 6.8 14.6 7.8 02:00 .024 6.9 15.3 8.4 03:00 .022 7.0 15.6 8.6 04:00 .022 6.3 13.1 6.8 05:00 .023 4.0 7.4 3.4 06:00 .022 4.7 9.1 4.3 07:00 .024 5.3 9.5 4.2 08:00 .025 6.3 10.5 4.1 09:00 .023 B 6.3 11.2 4.8 10:00 .026 5.6 9.8 4.1 11:00 .031 5.8 10.0 4.2 12:00 .030 5.3 9.6 4.2 13:00 .029 5.3 9.3 3.9 14:00 .031 B 5.6 9.8 4.1 15:00 .030 6.7 11.2 4.5 16:00 .030 7.0 11.9 4.8 17:00 .030 8.1 13.2 5.1 18:00 .027 8.7 15.6 6.9 19:00 .025 8.0 15.5 7.4 20:00 .023 7.7 16.0 8.2 21:00 .022 6.8 14.2 7.4 22:00 .022 C 6.4 14.3 7.8 23:00 C 6.3 13.8 7.4 Average .025 6.4 12.2 5.8 Max .031 8.7 16.0 8.6 Max Hour 14:00 18:00 20:00 03:00 Min .022 4.0 7.4 3.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 24-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.14% Date Printed: 7/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/24/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .1 1.6 1.8 .1 01:00 .030 .1 1.6 1.7 .1 02:00 .029 .1 2.4 2.6 .1 03:00 .028 .1 1.6 1.7 .1 04:00 .027 .1 1.6 1.7 .0 05:00 .028 .1 2.4 2.6 .0 06:00 .026 .2 3.0 3.3 .0 07:00 .028 .4 2.1 2.5 .0 08:00 .026 .4 2.3 2.7 .0 09:00 .030 .3 1.8 2.2 .0 10:00 .035 .2 1.3 1.6 .0 11:00 .033 .3 1.4 1.8 .0 12:00 .033 .1 1.5 1.7 .0 13:00 .031 .4 2.0 2.5 .1 14:00 .032 .3 1.9 2.3 .0 15:00 .033 .3 C 1.9 C 2.2 C .1 16:00 .033 C C C .0 17:00 .033 .2 C 2.0 C 2.3 C .0 18:00 .028 .2 2.5 2.8 .0 19:00 .025 .2 2.2 2.5 .0 C 20:00 .027 .2 1.8 2.1 C 21:00 .026 .2 1.7 1.9 .1 C 22:00 .032 C .2 1.5 1.8 .0 23:00 C .2 1.4 1.6 .0 Average .029 .2 1.8 2.1 .0 Max .035 .4 3.0 3.3 .1 Max Hour 10:00 13:00 06:00 06:00 21:00 Min .025 .1 1.3 1.6 .0 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 24-Jul-2026 15:46:00 16:11:00 65.9 70 -5.82% GPT-PS 24-Jul-2026 15:46:00 16:18:00 0.6 0.0 .62 GPTZ 24-Jul-2026 15:46:00 16:38:00 213.3 225 -5.18% GPT-PREC 24-Jul-2026 15:46:00 17:08:00 148.9 155 -3.87% NO2 GPT-PREC 24-Jul-2026 15:46:00 17:08:00 64.3 70 -8.04% NO2 Precision NO2_Diff PRECDIFF 24-Jul-2026 17:15:00 17:15:05 64.3 64.372 -.04% NOx NOx_Auto NO-PREC 24-Jul-2026 15:46:00 16:11:00 65.7 70 -6.14% Ozone O3_Auto ZERO 24-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 24-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.17% SO2 SO2_Auto ZERO 24-Jul-2026 19:46:00 20:11:00 0 0.0 .01 SPAN 24-Jul-2026 19:46:00 20:36:00 89.8 90 -.14% PREC 24-Jul-2026 19:46:00 21:01:00 39.7 40 -.65% Date Printed: 7/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/24/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.7 15.4 8.5 01:00 7.1 16.1 8.8 02:00 7.5 17.4 9.8 03:00 7.2 16.6 9.3 04:00 5.3 11.2 5.8 05:00 5.3 10.1 4.6 06:00 6.0 10.3 4.2 07:00 6.3 11.4 5.0 08:00 6.0 11.6 5.5 09:00 6.1 11.2 5.0 10:00 7.0 11.9 4.8 11:00 6.8 11.2 4.2 12:00 7.9 12.5 4.4 13:00 9.3 14.7 5.2 14:00 9.5 14.3 4.5 15:00 8.4 13.1 4.4 16:00 9.4 17.0 7.3 17:00 8.6 14.5 5.6 18:00 7.3 14.5 6.9 19:00 7.6 15.8 8.0 20:00 7.8 16.4 8.4 21:00 6.8 15.6 8.5 22:00 6.3 14.9 8.4 23:00 6.1 14.1 7.8 Average 7.1 13.8 6.4 Max 9.5 17.4 9.8 Max Hour 14:00 02:00 02:00 Min 5.3 10.1 4.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.65% Date Printed: 7/25/2026 01:30 Daily Summary Report Site: Union Cross 7/24/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .026 739.8 66.5 62.3 01:00 .026 739.7 65.6 63.9 02:00 .028 739.6 65.4 64.4 03:00 .026 739.4 65.0 64.8 04:00 .027 739.5 65.1 65.0 05:00 .029 739.7 65.1 65.0 06:00 .027 739.9 65.3 65.0 07:00 .027 740.1 65.7 65.3 08:00 .024 740.0 66.4 66.1 09:00 .027 740.1 67.5 66.4 10:00 .029 740.2 67.8 66.4 11:00 .029 740.0 68.4 66.7 12:00 .029 739.8 69.2 67.0 13:00 .029 739.7 69.0 68.0 14:00 .032 739.3 69.1 68.4 15:00 .029 739.1 70.1 68.1 16:00 .031 738.8 69.6 68.3 17:00 .032 738.9 70.0 68.0 18:00 .031 739.1 69.5 68.1 19:00 .027 739.3 69.2 68.7 20:00 .022 739.4 68.4 68.3 21:00 .025 739.4 67.4 67.4 22:00 .030 C 739.1 66.7 66.7 23:00 C 739.1 66.6 66.4 Average .027 739.5 67.4 66.4 Max .032 740.2 70.1 68.7 Max Hour 17:00 10:00 15:00 19:00 Min .022 738.8 65.0 62.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 24-Jul-2026 22:50:00 23:50:00 0.07 0.07 .21% 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