Date Printed: 10/8/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/7/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 6.0 11.7 5.6 01:00 .005 5.9 12.1 6.1 02:00 .006 5.9 10.4 4.5 03:00 .005 5.6 10.6 4.9 04:00 .005 5.5 10.8 5.3 05:00 .003 5.5 11.2 5.6 06:00 .002 6.1 21.4 15.2 07:00 .005 5.5 12.8 7.2 08:00 .014 5.5 12.8 7.3 09:00 .029 5.5 12.0 6.4 10:00 .039 5.6 13.2 7.6 11:00 .045 B 5.8 16.0 10.2 12:00 .047 6.1 15.2 8.9 13:00 .048 6.1 12.7 6.5 14:00 .050 6.1 14.2 8.0 15:00 .053 7.0 30.1 23.0 16:00 .051 7.8 30.7 22.9 17:00 .045 7.3 23.1 15.7 18:00 .038 7.9 27.3 19.4 19:00 .037 7.5 20.5 13.0 20:00 .029 7.3 17.8 10.4 21:00 .020 7.0 14.9 7.9 22:00 .015 C 7.1 14.5 7.3 23:00 B 7.9 15.7 7.8 Average .025 6.3 16.3 9.8 Max .053 7.9 30.7 23.0 Max Hour 15:00 23:00 16:00 15:00 Min .002 5.5 10.4 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 07-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.97% Date Printed: 10/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/7/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .016 .1 8.0 8.1 .1 01:00 .016 .1 7.5 7.7 .1 02:00 .011 .7 12.1 12.8 .2 03:00 .008 .7 14.3 15.1 .1 04:00 .007 2.2 15.3 17.5 .2 05:00 .005 1.6 12.3 14.0 .2 06:00 .002 12.1 10.1 22.3 .3 07:00 .005 17.5 10.9 28.5 .4 08:00 .022 6.7 11.8 18.6 .3 09:00 .034 1.9 6.4 8.4 .4 10:00 .041 .8 3.5 4.4 .3 11:00 .046 .4 2.6 3.0 .3 12:00 .050 .3 2.5 2.9 .3 13:00 .051 .3 2.4 2.7 .3 14:00 .053 .2 2.7 3.0 .3 15:00 .054 .2 C 2.9 C 3.2 C .3 16:00 .051 C C C .3 17:00 .046 .1 C 4.9 C 5.0 C .3 18:00 .037 .0 9.6 9.7 .3 19:00 .032 .1 12.7 12.9 .3 C 20:00 .026 .2 12.9 13.1 C 21:00 .028 .1 10.7 10.9 .3 C 22:00 .032 C .1 8.5 8.6 .2 23:00 C .1 9.6 9.8 .2 Average .029 2.0 8.4 10.5 .2 Max .054 17.5 15.3 28.5 .4 Max Hour 15:00 07:00 04:00 07:00 09:00 Min .002 .0 2.4 2.7 .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 07-Oct-2026 15:46:00 16:11:00 69.4 70 -.85% GPT-PS 07-Oct-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 07-Oct-2026 15:46:00 16:38:00 225 225 .03% GPT-PREC 07-Oct-2026 15:46:00 17:08:00 157.1 155 1.37% NO2 GPT-PREC 07-Oct-2026 15:46:00 17:08:00 68.2 70 -2.45% NO2 Precision NO2_Diff PRECDIFF 07-Oct-2026 17:15:00 17:15:05 67.9 68.284 -.52% NOx NOx_Auto NO-PREC 07-Oct-2026 15:46:00 16:11:00 69.4 70 -.81% Ozone O3_Auto ZERO 07-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.78% SO2 SO2_Auto ZERO 07-Oct-2026 19:46:00 20:11:00 0.2 0.0 .2 SPAN 07-Oct-2026 19:46:00 20:36:00 87.3 90 -2.94% PREC 07-Oct-2026 19:46:00 21:01:00 38.6 40 -3.27% Date Printed: 10/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/7/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.1 13.4 6.4 01:00 8.3 14.9 6.9 02:00 6.7 16.6 10.2 03:00 6.1 13.7 7.8 04:00 7.4 20.0 13.0 05:00 7.7 17.7 10.5 06:00 6.9 14.7 8.2 07:00 6.6 15.6 9.2 08:00 6.7 19.8 13.0 09:00 5.7 13.4 7.5 10:00 6.0 15.4 9.2 11:00 6.3 14.1 7.4 12:00 6.4 14.8 7.9 13:00 6.5 15.8 8.8 14:00 6.4 15.9 8.9 15:00 6.4 16.1 9.2 16:00 6.5 17.9 10.9 17:00 6.6 15.9 8.9 18:00 7.2 18.9 11.3 19:00 8.0 17.9 9.6 20:00 8.9 18.2 9.2 21:00 8.9 17.6 8.6 22:00 8.3 16.9 8.5 23:00 8.7 17.4 8.7 Average 7.0 16.3 9.1 Max 8.9 20.0 13.0 Max Hour 21:00 04:00 08:00 Min 5.7 13.4 6.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.27% Date Printed: 10/8/2026 01:30 Daily Summary Report Site: Union Cross 10/7/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .020 738.3 54.5 45.5 01:00 .012 738.0 53.4 45.2 02:00 .011 737.8 52.9 44.7 03:00 .003 737.6 48.8 44.5 04:00 .003 737.5 47.2 45.5 05:00 .001 737.7 46.9 45.3 06:00 .002 737.9 47.4 45.2 07:00 D 738.0 51.3 45.9 08:00 D 738.2 58.5 47.7 09:00 .033 D 738.3 61.7 49.1 10:00 .040 737.9 65.4 50.6 11:00 .047 737.2 68.0 52.0 12:00 .049 736.5 70.3 53.7 13:00 .049 735.9 72.6 55.4 14:00 .049 735.4 74.1 56.5 15:00 .052 735.1 75.4 57.3 16:00 .050 734.8 74.9 57.7 17:00 .046 734.7 72.4 57.4 18:00 .038 734.9 68.6 56.7 19:00 .041 735.3 67.2 56.3 20:00 .036 735.6 66.1 55.8 21:00 .037 735.8 64.9 55.4 22:00 .032 C 735.9 62.9 55.3 23:00 C 735.9 62.2 54.5 Average .031 736.6 61.9 51.3 Max .052 738.3 75.4 57.7 Max Hour 15:00 09:00 15:00 16:00 Min .001 734.7 46.9 44.5 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Oct-2026 22:50:00 23:50:00 0.069 0.07 .36% 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