Date Printed: 9/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .027 5.0 10.4 5.4 01:00 .019 5.7 11.9 6.2 02:00 .016 8.7 14.7 6.0 03:00 .017 9.0 15.8 6.7 04:00 .018 7.3 13.2 5.8 05:00 .008 6.9 15.7 8.8 06:00 .008 6.5 14.0 7.4 07:00 .016 5.1 10.7 5.6 08:00 .029 4.4 9.4 5.0 09:00 .029 B 5.0 10.2 5.1 10:00 .025 4.7 10.1 5.4 11:00 .026 4.5 8.4 3.8 12:00 .030 5.2 10.9 5.6 13:00 .031 5.7 11.1 5.4 14:00 .037 7.3 11.7 4.4 15:00 .045 7.9 11.8 3.8 16:00 .041 7.8 11.9 4.0 17:00 .030 7.1 11.6 4.4 18:00 .020 4.4 8.4 4.0 19:00 .015 4.0 7.9 3.8 20:00 .021 3.1 6.9 3.7 21:00 .018 2.6 6.1 3.4 22:00 .016 C 1.8 3.8 1.9 23:00 C 1.4 3.1 1.7 Average .023 5.4 10.4 4.8 Max .045 9.0 15.8 8.8 Max Hour 15:00 03:00 03:00 05:00 Min .008 1.4 3.1 1.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Sep-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 22-Sep-2026 22:50:00 23:50:00 0.067 0.07 -3.26% Date Printed: 9/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .2 4.7 5.0 .2 01:00 .017 .3 3.7 4.1 .2 02:00 .016 .3 3.2 3.6 .2 03:00 .020 .2 2.0 2.3 .2 04:00 .015 .3 5.7 6.0 .2 05:00 .012 .4 5.5 5.9 .2 06:00 .007 1.4 6.8 8.3 .2 07:00 .014 .9 9.4 10.4 .2 08:00 .023 .6 3.9 4.5 .2 09:00 .019 2.1 4.0 6.1 .2 10:00 .026 .5 2.6 3.2 D 11:00 .028 .3 2.5 2.9 D 12:00 .032 .4 2.6 3.1 D 13:00 .031 .5 3.3 3.8 .2 D 14:00 .040 .4 2.2 2.7 .2 15:00 .042 .3 C 1.8 C 2.2 C .2 16:00 .038 C C C .2 17:00 .023 .3 C 2.1 C 2.4 C .1 18:00 .021 .2 2.3 2.5 .1 19:00 .021 .2 3.0 3.2 .1 C 20:00 .023 .1 1.9 2.0 C 21:00 .021 .1 4.5 4.7 .2 C 22:00 .020 C .1 4.0 4.2 .2 23:00 C .1 4.5 4.7 .2 Average .023 .4 3.7 4.2 .1 Max .042 2.1 9.4 10.4 .2 Max Hour 15:00 09:00 07:00 07:00 23:00 Min .007 .1 1.8 2.0 .1 Count 23 23 23 23 20 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 22-Sep-2026 15:46:00 16:11:00 69.6 70 -.43% GPT-PS 22-Sep-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 22-Sep-2026 15:46:00 16:38:00 225.2 225 .12% GPT-PREC 22-Sep-2026 15:46:00 17:08:00 156.5 155 1.01% NO2 GPT-PREC 22-Sep-2026 15:46:00 17:08:00 68.7 70 -1.73% NO2 Precision NO2_Diff PRECDIFF 22-Sep-2026 17:15:00 17:15:05 68.7 68.789 -.11% NOx NOx_Auto NO-PREC 22-Sep-2026 15:46:00 16:11:00 69.8 70 -.18% Ozone O3_Auto ZERO 22-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 22-Sep-2026 22:50:00 23:50:00 0.069 0.07 -1.65% SO2 SO2_Auto ZERO 22-Sep-2026 19:46:00 20:11:00 0 0.0 .09 SPAN 22-Sep-2026 19:46:00 20:36:00 88.3 90 -1.86% PREC 22-Sep-2026 19:46:00 21:01:00 38.9 40 -2.53% Date Printed: 9/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.1 14.2 7.8 01:00 7.5 15.4 7.6 02:00 8.5 14.5 5.7 03:00 6.9 13.5 6.3 04:00 6.6 12.9 6.1 05:00 7.4 15.4 7.7 06:00 7.2 14.3 6.9 07:00 6.8 15.0 8.0 08:00 4.8 10.3 5.4 09:00 B B B 10:00 3.6 6.5 2.7 11:00 4.0 7.1 2.9 12:00 5.0 9.0 3.7 13:00 7.0 11.8 4.5 14:00 8.3 13.1 4.4 15:00 8.4 13.2 4.3 16:00 7.7 11.7 3.6 17:00 6.0 11.5 5.2 18:00 3.9 7.9 3.9 19:00 3.2 6.8 3.5 20:00 2.9 5.9 3.0 21:00 2.3 4.6 2.3 22:00 1.4 3.3 1.9 23:00 1.1 3.1 1.9 Average 5.5 10.4 4.7 Max 8.5 15.4 8.0 Max Hour 02:00 05:00 07:00 Min 1.1 3.1 1.9 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.53% Date Printed: 9/23/2026 01:30 Daily Summary Report Site: Union Cross 9/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .029 736.9 67.4 65.3 01:00 .021 736.7 67.3 66.1 02:00 .018 736.9 67.8 67.6 03:00 .016 736.7 69.0 68.4 04:00 .017 736.6 69.3 68.3 05:00 .015 736.6 69.0 68.2 06:00 .009 737.1 68.6 68.1 07:00 .014 738.0 69.0 68.3 08:00 .017 737.9 69.2 68.6 09:00 .016 737.8 70.4 69.4 10:00 .023 737.9 71.2 68.7 11:00 .032 738.1 72.0 68.0 12:00 .033 738.4 72.5 67.7 13:00 .035 738.1 72.6 68.2 14:00 .038 737.5 73.9 68.0 15:00 .038 737.2 74.4 67.8 16:00 .034 737.3 74.1 67.8 17:00 .019 737.9 70.1 66.5 18:00 .022 738.4 67.3 63.5 19:00 .021 739.3 64.2 61.1 20:00 .023 740.0 62.4 59.3 21:00 .023 740.1 61.4 58.3 22:00 .022 C 740.4 60.6 58.2 23:00 C 740.4 60.0 58.3 Average .023 738.0 68.4 65.8 Max .038 740.4 74.4 69.4 Max Hour 15:00 23:00 15:00 09:00 Min .009 736.6 60.0 58.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Sep-2026 22:50:00 23:50:00 0.07 0.07 .15% 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