Date Printed: 10/1/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/30/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .001 5.8 12.5 6.6 01:00 .002 5.4 11.1 5.6 02:00 .001 5.4 11.1 5.6 03:00 .001 5.9 11.6 5.7 04:00 .002 5.7 12.0 6.2 05:00 .001 B 5.9 13.5 7.6 06:00 .001 6.0 14.3 8.3 07:00 .002 D 5.8 14.2 8.3 08:00 D 8.6 18.5 9.8 09:00 D 10.9 20.1 9.2 10:00 D 8.7 15.3 6.6 11:00 .045 D 5.9 12.0 6.0 12:00 .047 5.9 11.5 5.6 13:00 .046 7.6 18.1 10.5 14:00 .046 8.2 23.2 15.0 15:00 .047 7.9 16.6 8.6 16:00 .048 8.3 15.5 7.1 17:00 .044 7.9 16.1 8.1 18:00 .037 8.3 20.0 11.7 19:00 .028 8.1 18.6 10.5 20:00 .023 8.1 20.1 11.9 21:00 .014 8.2 18.2 9.9 22:00 .008 C 8.7 17.7 9.0 23:00 B 9.1 17.1 8.0 Average .022 7.3 15.7 8.3 Max .048 10.9 23.2 15.0 Max Hour 16:00 09:00 14:00 14:00 Min .001 5.4 11.1 5.6 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Sep-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 30-Sep-2026 22:50:00 23:50:00 0.063 0.07 -9.08% Date Printed: 10/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/30/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .011 .6 9.5 10.2 .2 01:00 .015 .2 6.6 6.8 .2 02:00 .016 .1 4.1 4.3 .2 03:00 .014 .3 4.6 4.9 .2 04:00 .011 .2 3.9 4.2 .2 05:00 .013 .3 3.1 3.5 .1 06:00 .011 1.3 B 4.5 B 5.8 B .1 07:00 .014 B B B .2 08:00 .016 B B B .2 09:00 .028 B B B .2 10:00 .039 B B B .3 11:00 .053 .5 3.2 3.7 .4 12:00 .055 .2 2.2 2.4 .3 13:00 .053 .1 1.8 2.0 .2 14:00 .052 .1 2.0 2.1 .2 15:00 .052 .1 C 2.3 C 2.5 C .2 16:00 .052 C C C .3 17:00 .048 .1 C 3.4 C 3.5 C .2 18:00 .040 .0 8.6 8.7 .2 19:00 .035 .2 10.8 11.0 .3 C 20:00 .018 .5 17.7 18.3 C 21:00 .016 .6 13.3 13.9 .2 C 22:00 .014 C .5 11.7 12.3 .2 23:00 C .6 11.2 11.9 .2 Average .029 .3 6.5 6.9 .2 Max .055 1.3 17.7 18.3 .4 Max Hour 12:00 06:00 20:00 20:00 11:00 Min .011 .0 1.8 2.0 .1 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 30-Sep-2026 15:46:00 16:11:00 69.3 70 -.88% GPT-PS 30-Sep-2026 15:46:00 16:18:00 0.4 0.0 .46 GPTZ 30-Sep-2026 15:46:00 16:38:00 224.4 225 -.25% GPT-PREC 30-Sep-2026 15:46:00 17:08:00 156.8 155 1.17% NO2 GPT-PREC 30-Sep-2026 15:46:00 17:08:00 68.3 70 -2.38% NO2 Precision NO2_Diff PRECDIFF 30-Sep-2026 17:15:00 17:15:05 67.6 68.336 -1.02% NOx NOx_Auto NO-PREC 30-Sep-2026 15:46:00 16:11:00 69.5 70 -.66% Ozone O3_Auto ZERO 30-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 30-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.69% SO2 SO2_Auto ZERO 30-Sep-2026 19:46:00 20:11:00 0.1 0.0 .13 SPAN 30-Sep-2026 19:46:00 20:36:00 87.8 90 -2.43% PREC 30-Sep-2026 19:46:00 21:01:00 38.8 40 -2.95% Date Printed: 10/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/30/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.3 11.5 4.2 01:00 7.8 12.4 4.5 02:00 6.3 10.1 3.8 03:00 6.3 9.7 3.4 04:00 6.3 9.4 3.2 05:00 6.1 9.0 2.9 06:00 6.1 9.4 3.3 07:00 6.7 9.4 2.6 08:00 7.1 9.9 2.8 09:00 9.6 15.9 6.1 10:00 B B B 11:00 B B B 12:00 6.5 13.9 6.9 13:00 6.0 15.6 8.9 14:00 6.6 15.9 8.6 15:00 8.3 29.3 19.7 16:00 7.5 15.9 7.9 17:00 8.2 16.3 7.6 18:00 9.3 18.5 8.7 19:00 15.5 24.8 9.0 20:00 12.3 23.3 10.7 21:00 11.3 21.0 9.5 22:00 11.8 19.1 7.1 23:00 12.3 18.8 6.4 Average 8.4 15.4 6.7 Max 15.5 29.3 19.7 Max Hour 19:00 15:00 15:00 Min 6.0 9.0 2.6 Count 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.95% Date Printed: 10/1/2026 01:30 Daily Summary Report Site: Union Cross 9/30/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .004 738.3 60.6 57.9 01:00 .002 738.3 59.6 57.7 02:00 .005 738.5 59.3 58.0 03:00 .007 738.3 59.2 58.3 04:00 .007 738.5 58.8 58.3 05:00 .003 738.9 58.0 57.9 06:00 .006 739.5 57.9 57.9 07:00 .008 740.0 59.1 59.2 08:00 .012 740.3 61.2 61.2 09:00 .024 740.6 65.7 64.5 10:00 .041 740.5 72.8 62.0 11:00 .051 740.1 76.7 61.6 12:00 .056 739.4 78.3 61.5 13:00 .054 738.9 79.4 61.5 14:00 .052 738.5 80.1 61.7 15:00 .050 738.4 80.6 61.6 16:00 .049 738.2 80.3 61.4 17:00 .046 738.5 78.6 61.2 18:00 .036 738.8 74.7 59.9 19:00 .030 739.0 71.1 58.6 20:00 .024 739.3 67.9 57.9 21:00 .021 739.5 68.4 58.4 22:00 .027 C 739.5 68.5 58.2 23:00 C 739.4 64.3 58.2 Average .026 739.1 68.3 59.7 Max .056 740.6 80.6 64.5 Max Hour 12:00 09:00 15:00 09:00 Min .002 738.2 57.9 57.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-Sep-2026 22:50:00 23:50:00 0.07 0.07 .19% 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