Date Printed: 8/20/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/19/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .010 7.6 14.9 7.2 01:00 .012 8.3 15.8 7.4 02:00 .013 B 8.2 16.1 7.8 03:00 .011 8.2 16.6 8.3 04:00 .007 B 8.3 16.5 8.2 05:00 .004 8.4 17.6 9.1 06:00 .005 8.4 16.9 8.5 07:00 .010 D 8.2 16.2 7.9 08:00 D 8.3 16.6 8.3 09:00 .039 D 7.9 14.1 6.1 10:00 .045 8.4 14.4 6.0 11:00 .054 9.3 15.0 5.7 12:00 .051 9.4 15.1 5.6 13:00 .052 9.6 15.2 5.5 14:00 .051 9.6 16.0 6.4 15:00 .048 9.5 13.8 4.2 16:00 .047 9.2 14.4 5.1 17:00 .045 9.3 14.7 5.4 18:00 .042 9.2 18.1 8.9 19:00 .026 B 9.2 16.4 7.1 20:00 .018 11.6 32.6 20.9 21:00 .012 19.8 46.3 26.5 22:00 .009 C 18.0 33.9 15.9 23:00 B 17.6 32.1 14.5 Average .027 10.0 19.1 9.0 Max .054 19.8 46.3 26.5 Max Hour 11:00 21:00 21:00 21:00 Min .004 7.6 13.8 4.2 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 19-Aug-2026 22:50:00 23:50:00 0.067 0.07 -2.98% Date Printed: 8/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/19/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .029 .1 2.6 2.8 .1 01:00 .028 .1 2.2 2.4 .1 02:00 .025 .2 2.2 2.4 .1 03:00 .023 .2 2.0 2.2 .1 04:00 .018 .5 4.7 5.3 .1 05:00 .016 .2 4.7 5.0 .1 06:00 .020 .6 4.1 4.7 .1 07:00 .026 B B B .2 08:00 .033 B B B .9 09:00 .042 B B B 1.7 10:00 .051 B B B 1.0 11:00 .058 .5 B 4.2 B 4.8 B .7 12:00 .053 .1 1.6 1.8 .4 13:00 .052 .2 1.4 1.7 .3 14:00 .050 .2 1.4 1.6 .2 15:00 .051 .1 C 1.3 C 1.5 C .2 16:00 .051 C C C .3 17:00 .051 .1 C 1.7 C 1.9 C .2 18:00 .047 .0 2.4 2.4 .2 19:00 .041 .0 6.4 6.5 .2 C 20:00 .028 .2 10.6 10.8 C 21:00 .019 .4 11.5 11.9 .2 C 22:00 .013 C .3 12.9 13.2 .2 23:00 C .7 12.6 13.3 .2 Average .035 .2 4.7 5.0 .3 Max .058 .7 12.9 13.3 1.7 Max Hour 11:00 23:00 22:00 23:00 09:00 Min .013 .0 1.3 1.5 .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 19-Aug-2026 15:46:00 16:11:00 66.1 70 -5.51% GPT-PS 19-Aug-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 19-Aug-2026 15:46:00 16:38:00 213.6 225 -5.05% GPT-PREC 19-Aug-2026 15:46:00 17:08:00 149.2 155 -3.73% NO2 GPT-PREC 19-Aug-2026 15:46:00 17:08:00 65 70 -7.12% NO2 Precision NO2_Diff PRECDIFF 19-Aug-2026 17:15:00 17:15:05 64.4 65.015 -.92% NOx NOx_Auto NO-PREC 19-Aug-2026 15:46:00 16:11:00 66 70 -5.69% Ozone O3_Auto ZERO 19-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 19-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.18% SO2 SO2_Auto ZERO 19-Aug-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 19-Aug-2026 19:46:00 20:36:00 89.7 90 -.28% PREC 19-Aug-2026 19:46:00 21:01:00 39.4 40 -1.3% Date Printed: 8/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/19/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.7 15.0 6.9 01:00 8.3 15.2 6.5 02:00 8.6 15.2 6.2 03:00 8.6 15.8 6.8 04:00 8.9 15.7 6.4 05:00 8.9 14.9 5.7 06:00 8.6 15.5 6.5 07:00 8.3 15.3 6.5 08:00 7.7 15.0 6.7 09:00 8.5 15.7 6.5 10:00 9.1 16.0 6.1 11:00 9.7 17.6 6.9 12:00 9.7 15.9 5.3 13:00 9.6 15.1 4.6 14:00 9.2 15.3 5.1 15:00 9.6 15.1 4.6 16:00 9.3 15.6 5.3 17:00 9.1 15.7 5.8 18:00 9.3 14.5 4.5 19:00 9.8 18.1 7.5 20:00 10.2 17.2 6.3 21:00 10.9 18.4 6.9 22:00 11.2 20.9 9.1 23:00 11.6 20.5 8.3 Average 9.2 16.2 6.2 Max 11.6 20.9 9.1 Max Hour 23:00 22:00 22:00 Min 7.7 14.5 4.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.3% Date Printed: 8/20/2026 01:30 Daily Summary Report Site: Union Cross 8/19/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .016 735.3 72.7 66.2 01:00 .019 734.9 71.9 67.6 02:00 .018 734.8 71.3 68.7 03:00 .016 735.0 70.9 69.2 04:00 .009 735.1 70.5 69.2 05:00 .005 735.4 70.1 69.1 06:00 .009 736.0 70.9 69.1 07:00 .022 736.1 74.2 67.7 08:00 .031 736.0 78.5 68.6 09:00 .043 736.0 82.0 70.5 10:00 .053 736.2 84.0 69.6 11:00 .059 736.4 85.0 69.6 12:00 .066 736.2 86.2 69.2 13:00 .066 735.9 87.4 69.4 14:00 .057 735.7 88.5 69.8 15:00 .056 735.4 88.8 69.9 16:00 .055 735.3 88.6 69.9 17:00 .052 735.3 88.4 70.1 18:00 .047 735.3 85.9 69.3 19:00 .038 735.4 81.5 68.3 20:00 .032 735.8 77.9 67.9 21:00 .022 736.0 76.5 68.0 22:00 .013 C 736.1 75.2 67.8 23:00 C 736.3 74.3 67.9 Average .034 735.6 79.2 68.8 Max .066 736.4 88.8 70.5 Max Hour 13:00 11:00 15:00 09:00 Min .005 734.8 70.1 66.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Aug-2026 22:50:00 23:50:00 0.07 0.07 .91% 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