Date Printed: 8/2/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/1/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .008 8.2 16.4 8.2 01:00 .009 8.7 16.9 8.1 02:00 .006 8.9 16.3 7.4 03:00 .003 8.7 17.2 8.4 04:00 .002 8.6 16.3 7.6 05:00 .002 9.0 18.0 8.9 06:00 .007 10.3 18.1 7.8 07:00 .015 12.1 21.0 8.9 08:00 .021 B 12.8 21.2 8.4 09:00 .036 15.3 22.8 7.4 10:00 .040 16.6 27.1 10.4 11:00 .041 16.5 24.5 7.9 12:00 .044 18.1 24.8 6.7 13:00 .046 19.4 26.3 6.8 14:00 .044 18.7 26.1 7.4 15:00 .041 18.6 26.2 7.6 16:00 .029 17.7 25.3 7.6 17:00 .024 17.8 26.2 8.4 18:00 .033 17.8 32.3 14.5 19:00 .030 17.4 33.2 15.8 20:00 .030 17.4 24.9 7.5 21:00 .030 16.9 24.2 7.3 22:00 .029 B 16.1 24.5 8.4 23:00 C 14.3 22.1 7.8 Average .024 14.4 22.9 8.5 Max .046 19.4 33.2 15.8 Max Hour 13:00 13:00 19:00 19:00 Min .002 8.2 16.3 6.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 01-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.39% Date Printed: 8/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/1/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .017 .3 9.3 9.6 .1 01:00 .017 .4 9.4 9.8 .1 02:00 .014 .5 10.3 10.8 .1 03:00 .022 .2 5.9 6.2 .1 04:00 .022 .2 5.7 5.9 .1 05:00 .019 .3 5.2 5.5 .2 06:00 .026 .3 4.4 4.8 .2 07:00 .022 .8 8.2 9.0 .4 08:00 .028 1.0 6.5 7.6 .6 09:00 .040 .4 2.7 3.2 .3 10:00 .046 .3 2.0 2.3 .2 11:00 .050 .2 1.7 1.9 .2 12:00 .044 .4 2.3 2.8 .2 13:00 .047 .2 1.4 1.7 .2 14:00 .048 .3 1.3 1.6 .2 15:00 .048 .2 1.4 1.7 .2 16:00 .040 .3 2.2 2.5 .2 17:00 .032 .5 C 4.1 C 4.6 C .2 18:00 .036 C C C .2 19:00 .032 .3 C 4.1 C 4.5 C .2 C 20:00 .034 .2 2.2 2.5 C 21:00 .036 .2 2.0 2.2 .2 C 22:00 .034 C .2 2.3 2.5 .1 23:00 C .3 3.4 3.7 .2 Average .032 .3 4.2 4.6 .2 Max .050 1.0 10.3 10.8 .6 Max Hour 11:00 08:00 02:00 02:00 08:00 Min .014 .2 1.3 1.6 .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 01-Aug-2026 17:46:00 18:11:00 65.9 70 -5.81% GPT-PS 01-Aug-2026 17:46:00 18:18:00 0.6 0.0 .64 GPTZ 01-Aug-2026 17:46:00 18:38:00 214 225 -4.86% GPT-PREC 01-Aug-2026 17:46:00 19:08:00 149.3 155 -3.63% NO2 GPT-PREC 01-Aug-2026 17:46:00 19:08:00 65.1 70 -6.93% NO2 Precision NO2_Diff PRECDIFF 01-Aug-2026 20:15:00 20:15:05 64.6 65.147 -.7% NOx NOx_Auto NO-PREC 01-Aug-2026 17:46:00 18:11:00 66 70 -5.63% Ozone O3_Auto ZERO 01-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 01-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.04% SO2 SO2_Auto ZERO 01-Aug-2026 19:46:00 20:11:00 0 0.0 .09 SPAN 01-Aug-2026 19:46:00 20:36:00 90.4 90 .47% PREC 01-Aug-2026 19:46:00 21:01:00 40 40 .05% Date Printed: 8/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/1/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.5 17.9 7.1 01:00 11.0 19.3 7.9 02:00 11.4 19.7 8.0 03:00 10.9 18.8 7.6 04:00 11.2 19.4 7.8 05:00 11.7 19.3 7.3 06:00 12.9 20.9 7.5 07:00 17.0 48.5 30.3 08:00 15.6 27.1 10.7 09:00 17.2 28.8 10.5 10:00 18.8 27.9 7.9 11:00 20.3 32.0 10.5 12:00 19.3 30.3 9.7 13:00 20.8 29.9 7.7 14:00 20.4 29.7 7.8 15:00 20.7 31.0 8.8 16:00 20.3 29.5 7.9 17:00 20.1 30.2 8.9 18:00 19.6 29.5 8.8 19:00 19.4 28.7 8.3 20:00 19.3 29.2 8.9 21:00 18.9 28.2 8.3 22:00 18.6 29.6 10.1 23:00 17.6 28.1 9.6 Average 16.8 27.2 9.4 Max 20.8 48.5 30.3 Max Hour 13:00 07:00 07:00 Min 10.5 17.9 7.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .05% Date Printed: 8/2/2026 01:30 Daily Summary Report Site: Union Cross 8/1/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .028 735.4 71.4 60.2 01:00 .022 735.1 71.3 60.4 02:00 .024 734.8 70.5 60.6 03:00 .024 734.6 69.7 61.5 04:00 .025 734.6 69.4 63.4 05:00 .026 735.0 69.8 65.9 06:00 .027 735.1 70.8 67.6 07:00 .029 735.1 72.6 69.3 08:00 .034 735.0 74.7 71.0 09:00 .038 734.7 77.4 72.3 10:00 .046 734.6 80.4 72.4 11:00 .047 734.4 81.5 72.2 12:00 .048 734.1 82.0 71.8 13:00 .047 733.8 82.9 72.0 14:00 .048 733.1 83.7 72.0 15:00 .048 732.8 83.4 71.6 16:00 .039 732.5 80.5 72.7 17:00 .040 732.2 80.7 72.1 18:00 .040 732.1 79.0 71.2 19:00 .038 732.2 77.6 70.6 20:00 .037 732.4 75.8 71.3 21:00 .040 732.5 76.0 70.4 22:00 .039 C 732.5 75.5 70.8 23:00 C 732.6 74.9 71.5 Average .036 733.8 76.3 68.9 Max .048 735.4 83.7 72.7 Max Hour 15:00 00:00 14:00 16:00 Min .022 732.1 69.4 60.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 01-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.93% 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