Date Printed: 8/13/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/12/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .025 7.9 20.8 12.9 01:00 .028 7.6 20.2 12.5 02:00 .023 6.7 21.2 14.5 03:00 .020 6.7 21.0 14.2 04:00 .016 6.9 24.6 17.6 05:00 .013 7.1 21.9 14.7 06:00 .009 8.3 21.9 13.5 07:00 .011 8.4 18.7 10.2 08:00 .021 7.9 17.7 9.7 09:00 .029 8.0 17.3 9.3 10:00 .037 6.5 11.8 5.2 11:00 .041 6.4 11.1 4.7 12:00 .046 6.6 10.5 3.9 13:00 .047 6.7 10.7 3.9 14:00 .047 6.9 12.0 5.1 15:00 .044 6.7 12.2 5.4 16:00 .043 B 7.6 12.9 5.2 17:00 .041 7.4 13.1 5.7 18:00 .034 7.6 13.5 5.8 19:00 .023 8.1 16.4 8.2 20:00 .016 8.5 18.7 10.1 21:00 .016 8.7 15.9 7.2 22:00 .011 C 9.4 19.8 10.4 23:00 B 9.3 20.1 10.8 Average .027 7.5 16.8 9.1 Max .047 9.4 24.6 17.6 Max Hour 14:00 22:00 04:00 04:00 Min .009 6.4 10.5 3.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 12-Aug-2026 22:50:00 23:50:00 0.066 0.07 -4.02% Date Printed: 8/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/12/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .2 2.4 2.6 .1 01:00 .031 .1 2.0 2.2 .1 02:00 .033 .1 2.1 2.3 .1 03:00 .028 .2 2.3 2.5 .1 04:00 .023 .2 3.2 3.5 .1 05:00 .019 .2 4.6 4.9 .1 06:00 .015 1.4 8.4 9.9 .1 07:00 .021 1.9 7.6 9.7 .1 08:00 .035 .8 4.1 5.0 .2 09:00 .041 .3 2.0 2.4 .1 10:00 .044 .3 1.6 1.9 .1 11:00 .048 .3 2.1 2.5 .2 12:00 .053 .3 1.8 2.1 .2 13:00 .055 .2 1.6 1.9 .2 D 14:00 .055 .2 1.8 2.1 D 15:00 .050 .4 C 3.0 C 3.4 C D 16:00 .050 C C C .2 D 17:00 .047 .3 C 2.7 C 3.0 C .2 18:00 .045 .1 2.7 2.8 .2 19:00 .040 .0 4.3 4.4 .1 C 20:00 .037 .0 4.3 4.4 C 21:00 .033 .1 4.9 5.0 .2 C 22:00 .031 C .1 4.3 4.4 .2 23:00 C .1 3.6 3.7 .1 Average .037 .3 3.3 3.7 .1 Max .055 1.9 8.4 9.9 .2 Max Hour 14:00 07:00 06:00 06:00 22:00 Min .015 .0 1.6 1.9 .1 Count 23 23 23 23 21 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 12-Aug-2026 15:46:00 16:11:00 66.3 70 -5.15% GPT-PS 12-Aug-2026 15:46:00 16:18:00 0.3 0.0 .38 GPTZ 12-Aug-2026 15:46:00 16:38:00 214.1 225 -4.82% GPT-PREC 12-Aug-2026 15:46:00 17:08:00 149.2 155 -3.73% NO2 GPT-PREC 12-Aug-2026 15:46:00 17:08:00 65 70 -7.07% NO2 Precision NO2_Diff PRECDIFF 12-Aug-2026 17:15:00 17:15:05 64.9 65.05 -.15% NOx NOx_Auto NO-PREC 12-Aug-2026 15:46:00 16:11:00 66.3 70 -5.17% Ozone O3_Auto ZERO 12-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 12-Aug-2026 22:50:00 23:50:00 0.068 0.07 -2.54% SO2 SO2_Auto ZERO 12-Aug-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 12-Aug-2026 19:46:00 20:36:00 89.9 90 -.11% PREC 12-Aug-2026 19:46:00 21:01:00 39.6 40 -.78% Date Printed: 8/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/12/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.9 18.5 10.1 01:00 7.5 18.6 10.7 02:00 6.6 16.0 9.0 03:00 7.6 16.0 8.1 04:00 7.8 18.0 9.8 05:00 8.4 18.9 10.1 06:00 9.1 19.7 10.1 07:00 9.5 19.9 9.8 08:00 7.9 22.9 14.2 09:00 6.8 14.1 6.8 10:00 6.8 12.9 5.5 11:00 6.9 16.1 8.4 12:00 6.9 16.1 8.2 13:00 6.7 16.1 8.5 14:00 7.1 15.2 7.2 15:00 7.2 13.5 5.5 16:00 7.3 13.9 5.8 17:00 7.8 14.4 5.8 18:00 8.3 14.6 5.6 19:00 8.4 15.1 6.1 20:00 8.9 15.6 6.0 21:00 8.8 16.0 6.6 22:00 8.6 15.9 6.7 23:00 7.5 14.9 6.9 Average 7.7 16.3 7.9 Max 9.5 22.9 14.2 Max Hour 07:00 08:00 08:00 Min 6.6 12.9 5.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.78% Date Printed: 8/13/2026 01:30 Daily Summary Report Site: Union Cross 8/12/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .027 735.2 69.2 67.4 01:00 .028 734.6 68.5 66.9 02:00 .029 734.3 68.1 66.0 03:00 .030 734.3 68.3 65.3 04:00 .027 734.2 68.0 65.3 05:00 .018 734.4 67.3 65.5 06:00 .014 735.0 68.7 66.0 07:00 D 735.3 71.5 66.8 08:00 D 735.5 74.7 66.2 09:00 .039 D 735.5 76.3 66.0 10:00 .041 735.7 77.8 66.6 11:00 .048 735.8 80.3 66.5 12:00 .054 735.1 83.4 67.8 13:00 .055 734.6 85.8 68.6 14:00 .057 734.2 86.4 69.9 15:00 .053 733.8 85.3 70.1 16:00 .048 733.5 84.6 70.2 17:00 .047 733.9 84.4 70.6 18:00 .044 734.1 82.9 70.5 19:00 .037 734.3 80.1 69.9 20:00 .033 734.6 78.6 69.7 21:00 .032 734.7 77.0 70.1 22:00 .028 C 734.7 76.1 70.3 23:00 C 734.7 75.6 68.9 Average .037 734.6 76.6 67.9 Max .057 735.8 86.4 70.6 Max Hour 14:00 11:00 14:00 17:00 Min .014 733.5 67.3 65.3 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.58% 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