Date Printed: 10/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .005 6.9 13.0 6.1 01:00 .003 6.6 12.9 6.2 02:00 .003 6.1 11.6 5.4 03:00 .003 5.9 11.8 5.9 04:00 .003 6.1 12.0 5.8 05:00 .003 6.0 12.6 6.5 06:00 .002 5.7 13.9 8.1 07:00 .003 6.2 19.9 13.7 08:00 .013 5.3 12.4 7.1 09:00 .027 4.9 12.0 7.1 10:00 .046 4.5 12.1 7.5 11:00 .051 4.2 10.9 6.7 12:00 .053 3.8 10.8 7.0 13:00 .052 3.4 11.3 7.8 14:00 .051 3.1 8.4 5.2 15:00 .052 3.1 9.0 5.9 16:00 .051 3.2 10.8 7.5 17:00 .036 3.4 10.2 6.7 18:00 .021 3.9 12.5 8.6 19:00 .016 4.4 12.7 8.2 20:00 .014 5.0 11.9 6.9 21:00 .013 5.0 10.9 5.8 22:00 .016 C 4.9 10.2 5.2 23:00 C 5.0 9.6 4.5 Average .023 4.8 11.8 6.8 Max .053 6.9 19.9 13.7 Max Hour 12:00 00:00 07:00 07:00 Min .002 3.1 8.4 4.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.07% Date Printed: 10/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .006 1.9 14.1 16.1 .1 01:00 .011 .9 10.2 11.2 .1 02:00 .006 1.2 14.2 15.4 .1 03:00 .006 .7 10.8 11.6 .1 04:00 .006 .7 10.8 11.6 .1 05:00 .004 5.7 21.0 26.7 .2 06:00 .003 16.2 20.5 36.8 .4 07:00 .003 47.9 13.3 61.1 .9 08:00 .021 18.0 12.7 30.8 .5 09:00 .041 1.4 6.2 7.7 .4 10:00 .046 1.2 4.8 6.1 .4 11:00 .050 .2 1.7 2.0 .4 12:00 .050 .1 1.4 1.6 .4 13:00 .050 .1 1.4 1.6 .4 14:00 .051 .1 1.5 1.7 .4 15:00 .052 .1 C 1.7 C 1.8 C .4 16:00 .051 C C C .4 17:00 .044 .1 C 5.8 C 5.9 C .4 18:00 .036 .1 10.4 10.5 .4 19:00 .029 .0 11.4 11.4 .3 C 20:00 .025 .1 12.9 13.0 C 21:00 .008 3.3 31.5 34.7 .4 C 22:00 .009 C 1.0 23.8 24.9 .2 23:00 C 3.3 20.4 23.8 .2 Average .026 4.5 11.4 16.0 .3 Max .052 47.9 31.5 61.1 .9 Max Hour 15:00 07:00 21:00 07:00 07:00 Min .003 .0 1.4 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 22-Oct-2026 15:46:00 16:11:00 69.1 70 -1.29% GPT-PS 22-Oct-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 22-Oct-2026 15:46:00 16:38:00 224 225 -.41% GPT-PREC 22-Oct-2026 15:46:00 17:08:00 156.7 155 1.12% NO2 GPT-PREC 22-Oct-2026 15:46:00 17:08:00 68.2 70 -2.45% NO2 Precision NO2_Diff PRECDIFF 22-Oct-2026 17:15:00 17:15:05 67.3 68.282 -1.37% NOx NOx_Auto NO-PREC 22-Oct-2026 15:46:00 16:11:00 69 70 -1.32% Ozone O3_Auto ZERO 22-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Oct-2026 22:50:00 23:50:00 0.066 0.07 -4.42% SO2 SO2_Auto ZERO 22-Oct-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 22-Oct-2026 19:46:00 20:36:00 86.8 90 -3.49% PREC 22-Oct-2026 19:46:00 21:01:00 38.3 40 -4.22% Date Printed: 10/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.1 15.2 7.5 01:00 6.5 12.6 6.4 02:00 6.7 11.4 5.1 03:00 6.6 12.1 5.9 04:00 5.6 11.5 6.3 05:00 5.8 18.0 12.7 06:00 6.0 14.8 9.3 07:00 11.8 36.3 25.5 08:00 7.1 32.7 25.7 09:00 4.7 15.9 11.1 10:00 4.5 15.5 10.9 11:00 3.6 10.6 6.8 12:00 3.4 9.9 6.4 13:00 3.2 8.9 5.5 14:00 3.0 9.5 6.3 15:00 3.0 9.7 6.4 16:00 2.9 8.6 5.5 17:00 3.3 9.4 6.1 18:00 4.1 12.8 8.7 19:00 5.9 12.9 7.1 20:00 7.1 13.9 7.0 21:00 7.1 18.1 11.3 22:00 10.9 22.0 11.5 23:00 8.5 17.4 9.4 Average 5.8 14.9 9.3 Max 11.8 36.3 25.7 Max Hour 07:00 07:00 08:00 Min 2.9 8.6 5.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.22% Date Printed: 10/23/2026 01:30 Daily Summary Report Site: Union Cross 10/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .013 738.9 50.6 39.5 01:00 .010 738.9 48.6 40.1 02:00 .008 738.8 46.4 40.9 03:00 .011 738.5 47.5 41.4 04:00 .012 738.5 46.2 40.9 05:00 .005 738.9 44.1 40.5 06:00 .009 738.9 43.8 39.6 07:00 .007 739.2 47.0 41.2 08:00 .007 739.5 54.9 44.4 09:00 .032 739.4 60.3 45.0 10:00 .049 739.2 63.7 43.4 11:00 .050 739.1 65.2 42.6 12:00 .049 738.5 66.9 44.0 13:00 .050 738.0 68.4 43.6 14:00 .051 737.8 69.3 43.0 15:00 .052 737.7 69.7 42.8 16:00 .049 737.8 69.5 43.1 17:00 .042 738.1 65.6 41.5 18:00 .034 738.6 60.4 39.0 19:00 .029 738.9 57.2 37.5 20:00 .022 739.2 53.7 37.3 21:00 .004 739.7 50.8 39.7 22:00 .010 C 739.9 51.5 37.8 23:00 C 740.0 51.9 36.7 Average .026 738.8 56.3 41.0 Max .052 740.0 69.7 45.0 Max Hour 15:00 23:00 15:00 09:00 Min .004 737.7 43.8 36.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Oct-2026 22:50:00 23:50:00 0.07 0.07 .71% 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