Date Printed: 7/13/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/12/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .022 3.6 7.9 4.2 01:00 .019 3.5 7.8 4.2 02:00 .022 3.4 7.8 4.3 03:00 .022 B 3.3 8.7 5.4 04:00 .018 3.2 7.6 4.3 05:00 .015 B 3.4 9.3 5.8 06:00 .015 3.5 9.1 5.6 07:00 .016 3.6 9.5 5.9 08:00 .019 3.6 9.4 5.7 09:00 .026 3.9 10.1 6.2 10:00 .024 4.7 10.7 5.9 11:00 .023 5.3 10.3 5.0 12:00 .031 5.3 10.0 4.7 13:00 .046 5.6 10.4 4.8 14:00 .055 5.6 9.9 4.2 15:00 .060 5.7 10.4 4.7 16:00 .057 5.9 9.4 3.5 17:00 .046 5.7 11.1 5.4 18:00 .035 4.0 9.3 5.3 19:00 .042 4.9 11.3 6.3 20:00 .040 6.3 11.5 5.2 21:00 .035 B 7.0 11.9 4.9 22:00 .031 B 7.5 12.7 5.1 23:00 C 5.9 10.9 5.0 Average .031 4.7 9.8 5.0 Max .060 7.5 12.7 6.3 Max Hour 15:00 22:00 22:00 19:00 Min .015 3.2 7.6 3.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 12-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.54% Date Printed: 7/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/12/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .030 .1 2.7 2.9 .0 01:00 .028 .1 3.2 3.4 .1 02:00 .028 .1 2.5 2.7 .1 03:00 .028 .1 2.9 3.1 .0 04:00 .027 .1 4.8 5.0 .1 05:00 .023 .2 7.1 7.3 .0 06:00 .021 .4 5.2 5.6 .1 07:00 .020 .8 5.4 6.2 .1 08:00 .025 .5 2.7 3.3 .1 09:00 .027 1.3 4.2 5.5 .3 10:00 .015 13.4 17.2 30.7 1.8 11:00 .026 5.1 11.9 17.1 1.1 12:00 .042 1.0 4.2 5.2 .4 13:00 .045 .2 1.2 1.4 .1 14:00 .045 .2 1.1 1.3 .1 15:00 .045 .1 C 1.1 C 1.3 C .1 16:00 .046 C C C .4 17:00 .033 3.6 C 16.8 C 20.5 C .8 18:00 .046 .2 2.4 2.7 .1 19:00 .044 .1 2.0 2.2 .1 C 20:00 .038 .2 2.1 2.4 C 21:00 .034 .2 2.0 2.2 .1 C 22:00 .033 C .1 1.8 2.0 .1 23:00 C .1 1.6 1.7 .1 Average .032 1.2 4.6 5.9 .2 Max .046 13.4 17.2 30.7 1.8 Max Hour 18:00 10:00 10:00 10:00 10:00 Min .015 .1 1.1 1.3 .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 12-Jul-2026 15:46:00 16:11:00 66 70 -5.68% GPT-PS 12-Jul-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 12-Jul-2026 15:46:00 16:38:00 213.6 225 -5.06% GPT-PREC 12-Jul-2026 15:46:00 17:08:00 149.1 155 -3.78% NO2 GPT-PREC 12-Jul-2026 15:46:00 17:08:00 64.8 70 -7.31% NO2 Precision NO2_Diff PRECDIFF 12-Jul-2026 17:15:00 17:15:05 64.4 64.884 -.63% NOx NOx_Auto NO-PREC 12-Jul-2026 15:46:00 16:11:00 66.1 70 -5.56% Ozone O3_Auto ZERO 12-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.9% SO2 SO2_Auto ZERO 12-Jul-2026 19:46:00 20:11:00 0 0.0 0.00 SPAN 12-Jul-2026 19:46:00 20:36:00 90.2 90 .3% PREC 12-Jul-2026 19:46:00 21:01:00 39.9 40 -.19% Date Printed: 7/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/12/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.9 9.7 5.5 01:00 3.8 11.0 6.9 02:00 3.7 9.8 5.9 03:00 3.6 11.0 7.1 04:00 3.7 10.4 6.4 05:00 3.9 10.1 6.0 06:00 3.9 11.0 6.8 07:00 4.2 11.9 7.4 08:00 4.4 11.6 6.8 09:00 5.3 12.7 7.0 10:00 6.3 13.2 6.5 11:00 6.7 13.2 5.9 12:00 6.8 11.7 4.4 13:00 6.4 11.3 4.4 14:00 6.7 11.6 4.3 15:00 7.0 12.4 4.9 16:00 7.9 13.7 5.2 17:00 4.5 16.5 11.5 18:00 5.5 13.6 7.6 19:00 7.2 15.6 7.9 20:00 7.5 15.6 7.7 21:00 9.2 14.9 5.3 22:00 9.4 16.4 6.6 23:00 7.8 16.7 8.4 Average 5.8 12.7 6.5 Max 9.4 16.7 11.5 Max Hour 22:00 23:00 17:00 Min 3.6 9.7 4.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.19% Date Printed: 7/13/2026 01:30 Daily Summary Report Site: Union Cross 7/12/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 736.5 75.0 68.0 01:00 .031 736.6 74.1 67.5 02:00 .027 736.9 72.8 67.7 03:00 .029 737.1 72.7 67.4 04:00 .028 737.3 73.0 67.2 05:00 .018 737.4 72.0 67.4 06:00 .019 737.8 72.3 67.9 07:00 .019 738.4 73.1 68.6 08:00 .021 738.9 74.4 68.9 09:00 .028 739.0 76.0 68.7 10:00 .033 739.4 76.5 69.0 11:00 .037 739.4 78.1 69.5 12:00 .041 739.1 79.9 69.9 13:00 .044 738.5 82.2 70.4 14:00 .046 737.8 83.0 70.3 15:00 .046 737.7 83.2 70.7 16:00 .043 737.7 82.5 70.5 17:00 .044 738.0 78.3 69.7 18:00 .045 738.2 76.2 69.0 19:00 .043 738.2 75.1 69.1 20:00 .040 738.7 74.8 69.2 21:00 .034 738.9 74.2 70.4 22:00 .034 C 739.1 74.1 70.2 23:00 C 739.2 72.6 69.4 Average .034 738.1 76.0 69.0 Max .046 739.4 83.2 70.7 Max Hour 15:00 11:00 15:00 15:00 Min .018 736.5 72.0 67.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Jul-2026 22:50:00 23:50:00 0.068 0.07 -1.88% 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