Date Printed: 7/27/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/26/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 9.1 25.8 16.5 01:00 .003 8.1 22.3 14.1 02:00 .001 8.8 26.9 18.1 03:00 .001 B 8.6 27.6 18.9 04:00 .001 8.9 27.5 18.5 05:00 .002 8.4 25.6 17.1 06:00 .006 8.6 23.8 15.1 07:00 .007 8.3 18.9 10.6 08:00 .010 6.0 11.2 5.1 09:00 .010 5.9 10.7 4.8 10:00 .020 10.0 16.1 6.0 11:00 .033 10.2 16.1 5.8 12:00 .037 B 10.6 16.6 5.9 13:00 .035 10.5 15.7 5.2 14:00 .036 10.3 15.9 5.5 15:00 .035 9.6 14.3 4.7 16:00 .035 8.7 13.5 4.8 17:00 .032 7.8 12.7 4.9 18:00 .027 7.5 12.6 5.1 19:00 .022 7.6 13.2 5.5 20:00 .018 7.5 13.3 5.7 21:00 .016 7.7 13.9 6.2 22:00 .013 B 7.8 14.6 6.8 23:00 C 7.9 17.1 9.1 Average .017 8.5 17.7 9.1 Max .037 10.6 27.6 18.9 Max Hour 12:00 12:00 03:00 03:00 Min .001 5.9 10.7 4.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 26-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.94% Date Printed: 7/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/26/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .010 .4 5.8 6.2 .1 01:00 .006 .3 5.1 5.5 .1 02:00 .007 .5 4.2 4.7 .1 03:00 .002 1.8 6.4 8.2 .1 04:00 .002 1.9 4.5 6.4 .1 05:00 .004 .9 4.0 5.0 .1 06:00 .008 1.1 2.8 4.0 .1 07:00 .014 .8 2.4 3.2 .1 08:00 .014 1.4 4.2 5.6 .2 09:00 .016 .6 2.7 3.4 .1 10:00 .023 .7 2.0 2.7 .1 11:00 .036 .5 2.2 2.7 .1 12:00 .046 .3 2.3 2.6 .2 13:00 .048 .2 1.8 2.1 .2 14:00 .046 .2 1.9 2.2 .2 15:00 .042 .2 C 1.6 C 1.8 C .2 16:00 .041 C C C .2 17:00 .037 .2 C 1.6 C 1.9 C .2 18:00 .035 .1 1.8 2.0 .2 19:00 .034 .1 3.7 3.8 .2 C 20:00 .032 .1 6.4 6.5 C 21:00 .026 .1 5.9 6.1 .2 C 22:00 .022 C .1 4.3 4.4 .1 23:00 C .2 4.0 4.2 .1 Average .023 .5 3.5 4.1 .1 Max .048 1.9 6.4 8.2 .2 Max Hour 13:00 04:00 20:00 03:00 21:00 Min .002 .1 1.6 1.8 .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 26-Jul-2026 15:46:00 16:11:00 66.1 70 -5.51% GPT-PS 26-Jul-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 26-Jul-2026 15:46:00 16:38:00 214 225 -4.85% GPT-PREC 26-Jul-2026 15:46:00 17:08:00 149.7 155 -3.4% NO2 GPT-PREC 26-Jul-2026 15:46:00 17:08:00 64.7 70 -7.48% NO2 Precision NO2_Diff PRECDIFF 26-Jul-2026 17:15:00 17:15:05 64.3 64.761 -.61% NOx NOx_Auto NO-PREC 26-Jul-2026 15:46:00 16:11:00 66.3 70 -5.27% Ozone O3_Auto ZERO 26-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 26-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3% SO2 SO2_Auto ZERO 26-Jul-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 26-Jul-2026 19:46:00 20:36:00 90 90 .06% PREC 26-Jul-2026 19:46:00 21:01:00 40 40 .12% Date Printed: 7/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/26/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.8 24.0 14.7 01:00 8.6 22.9 13.9 02:00 8.4 27.2 18.3 03:00 9.5 30.2 20.2 04:00 9.7 32.1 22.0 05:00 8.5 25.6 16.7 06:00 7.8 22.4 14.1 07:00 6.2 14.2 7.7 08:00 8.3 14.7 6.0 09:00 8.8 14.5 5.3 10:00 9.6 16.0 5.8 11:00 10.2 16.8 6.0 12:00 11.3 18.7 6.5 13:00 11.2 16.9 4.9 14:00 11.3 18.3 6.0 15:00 11.3 18.0 5.8 16:00 10.9 17.8 6.0 17:00 9.8 16.8 6.3 18:00 9.3 15.8 5.8 19:00 10.0 16.2 5.5 20:00 11.5 19.0 6.8 21:00 10.0 17.3 6.7 22:00 9.0 19.6 10.0 23:00 8.5 18.4 9.3 Average 9.5 19.7 9.5 Max 11.5 32.1 22.0 Max Hour 20:00 04:00 04:00 Min 6.2 14.2 4.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .12% Date Printed: 7/27/2026 01:30 Daily Summary Report Site: Union Cross 7/26/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .008 735.8 67.6 67.4 01:00 .004 735.3 66.8 66.8 02:00 .004 735.2 66.6 66.6 03:00 .002 734.9 66.2 66.2 04:00 .002 735.0 66.0 66.0 05:00 .003 735.2 66.2 66.2 06:00 .008 735.3 67.1 67.1 07:00 .013 735.6 68.6 68.6 08:00 .016 735.7 69.8 69.2 09:00 .017 735.9 71.3 69.5 10:00 .023 735.6 73.1 69.5 11:00 .032 735.2 77.4 69.4 12:00 .041 734.9 79.9 68.5 13:00 .045 734.3 82.5 67.8 14:00 .046 733.8 82.6 69.7 15:00 .045 733.4 83.1 69.9 16:00 .042 733.2 83.5 70.1 17:00 .046 733.0 82.4 70.8 18:00 .044 733.0 81.2 70.6 19:00 .033 733.1 78.8 70.3 20:00 .027 733.3 76.7 70.0 21:00 .025 733.6 75.7 70.7 22:00 .024 C 733.6 75.2 71.7 23:00 C 733.9 74.4 72.0 Average .023 734.4 74.2 68.9 Max .046 735.9 83.5 72.0 Max Hour 17:00 09:00 16:00 23:00 Min .002 733.0 66.0 66.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 26-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.28% 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