Date Printed: 8/9/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/8/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .008 6.7 15.1 8.4 01:00 .007 6.3 17.1 10.7 02:00 .005 6.2 17.1 10.8 03:00 .006 6.2 16.0 9.7 04:00 .006 5.8 15.1 9.2 05:00 .006 5.9 15.0 9.1 06:00 .006 5.6 14.1 8.5 07:00 .011 B 5.8 13.6 7.8 08:00 .020 B 6.2 14.4 8.2 09:00 .026 6.3 14.3 8.0 10:00 .031 5.8 12.5 6.6 11:00 .033 5.7 11.6 5.9 12:00 .036 5.7 15.6 9.9 13:00 .037 4.3 12.3 7.9 14:00 .038 5.1 13.2 8.0 15:00 .041 5.7 11.9 6.1 16:00 .037 5.2 11.9 6.6 17:00 .036 4.6 10.9 6.2 18:00 .026 4.5 11.6 7.0 19:00 .024 4.9 11.9 6.9 20:00 .021 4.7 12.0 7.3 21:00 .019 5.0 12.3 7.2 22:00 .015 C 5.3 12.5 7.2 23:00 C 5.4 14.5 9.1 Average .021 5.5 13.6 8.0 Max .041 6.7 17.1 10.8 Max Hour 15:00 00:00 02:00 02:00 Min .005 4.3 10.9 5.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 08-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.84% Date Printed: 8/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/8/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .012 .1 3.6 3.8 .1 01:00 .011 .2 3.1 3.3 .1 02:00 .010 .2 3.1 3.4 .1 03:00 .010 .3 3.3 3.7 .1 04:00 .009 .3 3.3 3.6 .1 05:00 .008 .4 3.3 3.8 .1 06:00 .008 .8 3.2 4.1 .1 07:00 .013 1.4 3.0 4.5 .2 08:00 .022 .9 2.5 3.5 .2 09:00 .028 .5 2.3 2.9 .2 10:00 .033 .4 1.9 2.4 .1 11:00 .035 .3 1.3 1.6 .2 12:00 .036 .2 1.5 1.7 .1 13:00 .041 .5 2.6 3.1 .1 14:00 .044 .2 1.3 1.6 .1 15:00 .043 .2 C 1.1 C 1.4 C .1 16:00 .041 C C C .1 17:00 .037 .4 C 2.7 C 3.1 C .1 18:00 .024 .3 4.3 4.7 .1 19:00 .017 .2 5.3 5.6 .1 C 20:00 .014 .3 8.0 8.3 C 21:00 .014 .3 7.3 7.6 .3 C 22:00 .017 C .2 3.8 4.0 .1 23:00 C .1 3.8 4.0 .1 Average .022 .3 3.2 3.7 .1 Max .044 1.4 8.0 8.3 .3 Max Hour 14:00 07:00 20:00 20:00 21:00 Min .008 .1 1.1 1.4 .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 08-Aug-2026 15:46:00 16:11:00 65.7 70 -6.03% GPT-PS 08-Aug-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 08-Aug-2026 15:46:00 16:38:00 213.1 225 -5.27% GPT-PREC 08-Aug-2026 15:46:00 17:08:00 148.3 155 -4.31% NO2 GPT-PREC 08-Aug-2026 15:46:00 17:08:00 65.6 70 -6.19% NO2 Precision NO2_Diff PRECDIFF 08-Aug-2026 17:15:00 17:15:05 64.8 65.668 -1.3% NOx NOx_Auto NO-PREC 08-Aug-2026 15:46:00 16:11:00 66.1 70 -5.54% Ozone O3_Auto ZERO 08-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.05% SO2 SO2_Auto ZERO 08-Aug-2026 19:46:00 20:11:00 0 0.0 .02 SPAN 08-Aug-2026 19:46:00 20:36:00 89.9 90 -.05% PREC 08-Aug-2026 19:46:00 21:01:00 39.6 40 -.77% Date Printed: 8/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/8/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.7 19.7 12.6 01:00 7.0 23.6 16.1 02:00 7.2 22.9 15.2 03:00 7.2 21.5 13.9 04:00 6.8 20.9 13.6 05:00 6.8 19.2 12.0 06:00 6.3 18.6 11.9 07:00 5.9 15.9 9.5 08:00 6.4 15.9 8.9 09:00 6.8 16.8 9.3 10:00 6.4 15.5 8.3 11:00 6.0 13.8 7.1 12:00 5.9 12.9 6.3 13:00 4.5 11.7 6.7 14:00 4.7 10.5 5.2 15:00 5.5 12.8 6.6 16:00 6.1 19.0 12.3 17:00 4.4 19.5 14.6 18:00 5.1 18.9 13.4 19:00 5.3 21.3 15.5 20:00 7.2 25.1 17.4 21:00 6.9 23.9 16.5 22:00 6.4 24.8 17.9 23:00 6.8 23.6 16.3 Average 6.1 18.6 11.9 Max 7.2 25.1 17.9 Max Hour 20:00 20:00 22:00 Min 4.4 10.5 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.77% Date Printed: 8/9/2026 01:30 Daily Summary Report Site: Union Cross 8/8/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .015 740.0 74.4 71.3 01:00 .012 739.6 73.6 71.5 02:00 .011 739.4 72.9 71.7 03:00 .010 739.4 72.8 72.0 04:00 .010 739.6 73.1 72.3 05:00 .009 740.1 73.0 72.1 06:00 .010 740.6 73.6 72.2 07:00 .016 740.6 76.2 71.9 08:00 .023 740.6 78.7 71.7 09:00 .030 740.5 80.5 72.5 10:00 .036 740.5 83.1 73.0 11:00 .040 740.2 84.8 72.8 12:00 .041 739.7 86.2 72.4 13:00 .042 739.4 82.9 71.4 14:00 .041 738.9 85.2 72.2 15:00 .045 738.5 87.9 72.6 16:00 .044 738.4 86.1 71.6 17:00 .043 738.0 77.8 68.3 18:00 .034 738.6 76.4 68.8 19:00 .027 738.9 75.2 69.6 20:00 .027 739.2 75.2 69.4 21:00 .024 739.2 74.1 69.5 22:00 .019 C 739.0 72.8 69.8 23:00 C 738.9 71.9 70.1 Average .026 739.4 77.8 71.2 Max .045 740.6 87.9 73.0 Max Hour 15:00 08:00 15:00 10:00 Min .009 738.0 71.9 68.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.82% 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