Date Printed: 8/4/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/3/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .012 7.9 28.4 20.5 01:00 .011 9.1 31.3 22.1 02:00 .012 7.1 27.5 20.4 03:00 .015 8.0 24.5 16.4 04:00 .016 8.2 24.3 16.0 05:00 .014 8.1 25.8 17.7 06:00 .011 6.9 18.0 11.1 07:00 .010 6.1 16.4 10.2 08:00 .013 B 6.8 16.6 9.7 09:00 .021 7.6 15.9 8.2 10:00 .028 6.7 13.3 6.5 11:00 D 6.6 12.7 6.0 12:00 D 6.5 12.5 5.9 13:00 D 6.7 13.1 6.4 14:00 .046 7.4 13.5 6.0 15:00 .048 7.7 14.7 6.9 16:00 .048 B 7.0 12.8 5.8 17:00 .043 6.8 12.4 5.5 18:00 .032 6.2 11.9 5.6 19:00 .026 6.4 13.0 6.5 20:00 .019 7.0 14.1 7.1 21:00 .011 8.2 16.7 8.4 22:00 .008 C 10.0 22.4 12.3 23:00 C 10.4 20.6 10.1 Average .022 7.4 18.0 10.4 Max .048 10.4 31.3 22.1 Max Hour 16:00 23:00 01:00 01:00 Min .008 6.1 11.9 5.5 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 03-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 03-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.62% Date Printed: 8/4/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/3/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .018 .1 2.9 3.1 .1 01:00 .019 .2 2.6 2.8 .1 02:00 .017 .2 3.1 3.3 .1 03:00 .018 .2 4.4 4.6 .1 04:00 .017 .2 2.9 3.2 .1 05:00 .014 .4 4.0 4.4 .1 06:00 .012 .4 3.5 4.0 .1 07:00 .012 .9 3.9 4.8 .1 08:00 .014 1.4 4.3 5.7 .2 09:00 .022 1.1 3.1 4.2 .1 10:00 .033 .5 1.9 2.5 .1 11:00 .036 .3 1.5 1.9 .2 12:00 .040 .3 1.6 2.0 .2 13:00 .043 .3 1.5 1.8 .2 14:00 .044 .2 1.4 1.7 .2 15:00 .050 .2 1.7 2.0 .2 16:00 .052 .2 1.9 2.2 .2 17:00 .051 .1 C 2.0 C 2.2 C .2 18:00 .047 C C C .3 19:00 .038 .2 C 5.5 C 5.7 C .2 C 20:00 .029 .1 7.5 7.7 C 21:00 .029 .1 6.1 6.3 .2 C 22:00 .024 C .2 8.4 8.6 .2 23:00 C .2 5.6 5.9 .3 Average .029 .3 3.5 3.9 .1 Max .052 1.4 8.4 8.6 .3 Max Hour 16:00 08:00 22:00 22:00 23:00 Min .012 .1 1.4 1.7 .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 03-Aug-2026 17:46:00 18:11:00 65.9 70 -5.81% GPT-PS 03-Aug-2026 17:46:00 18:18:00 0.5 0.0 .56 GPTZ 03-Aug-2026 17:46:00 18:38:00 214 225 -4.88% GPT-PREC 03-Aug-2026 17:46:00 19:08:00 148.9 155 -3.88% NO2 GPT-PREC 03-Aug-2026 17:46:00 19:08:00 65.4 70 -6.54% NO2 Precision NO2_Diff PRECDIFF 03-Aug-2026 20:15:00 20:15:05 65 65.422 -.59% NOx NOx_Auto NO-PREC 03-Aug-2026 17:46:00 18:11:00 66.1 70 -5.55% Ozone O3_Auto ZERO 03-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 03-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.3% SO2 SO2_Auto ZERO 03-Aug-2026 19:46:00 20:11:00 0 0.0 .05 SPAN 03-Aug-2026 19:46:00 20:36:00 90.1 90 .17% PREC 03-Aug-2026 19:46:00 21:01:00 39.7 40 -.63% Date Printed: 8/4/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/3/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.3 30.2 23.1 01:00 6.4 31.4 24.2 02:00 6.9 32.2 24.5 03:00 9.6 27.6 17.2 04:00 11.0 28.0 16.2 05:00 10.9 30.5 18.7 06:00 7.3 20.0 12.1 07:00 5.2 13.9 8.3 08:00 5.6 12.2 6.2 09:00 6.1 12.7 6.1 10:00 6.5 13.7 6.6 11:00 6.1 11.9 5.2 12:00 6.3 14.2 7.1 13:00 6.5 13.7 6.5 14:00 6.9 15.1 7.4 15:00 7.6 14.9 6.5 16:00 7.8 14.5 5.9 17:00 7.6 14.7 6.4 18:00 7.6 15.2 6.9 19:00 7.7 15.5 7.1 20:00 8.2 15.9 7.1 21:00 9.2 17.2 7.4 22:00 11.5 22.7 10.4 23:00 10.9 20.8 9.2 Average 7.7 19.1 10.6 Max 11.5 32.2 24.5 Max Hour 22:00 02:00 02:00 Min 5.2 11.9 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.63% Date Printed: 8/4/2026 01:30 Daily Summary Report Site: Union Cross 8/3/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .017 731.3 70.6 70.4 01:00 .015 731.5 70.4 70.4 02:00 .019 731.7 70.5 70.6 03:00 .021 731.7 70.8 70.9 04:00 .019 731.9 71.1 71.1 05:00 .016 732.3 71.3 71.3 06:00 .015 732.7 71.4 71.4 07:00 .015 732.8 71.7 71.7 08:00 D 732.9 72.7 72.7 09:00 D 733.1 75.2 72.1 10:00 D 733.1 78.3 70.9 11:00 .037 733.1 80.4 70.8 12:00 .039 733.1 82.0 71.0 13:00 .040 732.9 83.4 71.0 14:00 .049 732.5 84.5 70.8 15:00 .051 732.4 85.1 70.9 16:00 .049 732.7 85.2 71.1 17:00 .047 732.8 84.8 70.9 18:00 .038 733.1 83.1 70.9 19:00 .029 733.3 80.6 70.8 20:00 .023 734.1 79.0 70.7 21:00 .027 734.4 78.0 71.1 22:00 .026 C 734.5 76.7 72.0 23:00 C 735.0 74.8 72.1 Average .029 732.8 77.1 71.1 Max .051 735.0 85.2 72.7 Max Hour 15:00 23:00 16:00 08:00 Min .015 731.3 70.4 70.4 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 03-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 03-Aug-2026 22:50:00 23:50:00 0.07 0.07 .52% 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