Date Printed: 8/18/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/17/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .026 7.3 34.9 27.6 01:00 .019 8.2 30.9 22.7 02:00 .013 9.0 20.6 11.6 03:00 .009 9.9 24.5 14.6 04:00 .005 9.6 21.6 11.9 05:00 .002 8.0 18.2 10.1 06:00 .003 6.7 14.1 7.4 07:00 .008 8.4 19.4 11.0 08:00 .020 9.3 23.3 13.9 09:00 .032 10.6 27.4 16.8 10:00 .040 12.7 33.5 20.8 11:00 .041 13.2 36.4 23.1 12:00 .040 12.9 33.7 20.7 13:00 .039 12.4 31.5 19.1 14:00 .040 B 12.2 33.2 21.0 15:00 .040 11.7 29.4 17.7 16:00 .039 B 9.8 25.1 15.3 17:00 .040 6.7 17.1 10.3 18:00 .033 7.2 17.9 10.6 19:00 .025 6.7 17.4 10.7 20:00 .021 6.2 18.5 12.3 21:00 .023 5.5 14.2 8.7 22:00 .019 C 5.3 15.1 9.7 23:00 C 5.9 16.7 10.7 Average .025 8.9 23.9 14.9 Max .041 13.2 36.4 27.6 Max Hour 11:00 11:00 11:00 00:00 Min .002 5.3 14.1 7.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 17-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.58% Date Printed: 8/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/17/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .3 2.7 3.0 .1 01:00 .024 .3 3.0 3.3 .1 02:00 .018 .3 3.1 3.5 .1 03:00 .011 .4 3.3 3.7 .1 04:00 .008 .5 3.7 4.3 .1 05:00 .004 1.4 7.5 8.9 .2 06:00 .004 5.4 8.8 14.2 .2 07:00 .012 4.5 6.3 10.8 .2 08:00 .027 2.2 5.8 8.1 .2 09:00 .046 1.1 5.2 6.4 .3 10:00 .052 .5 3.6 4.1 .4 11:00 .043 .4 1.9 2.4 .3 12:00 .041 .3 1.5 1.9 .3 13:00 .042 .3 1.6 1.9 .2 14:00 .041 .3 1.7 2.0 .3 15:00 .045 .3 C 1.7 C 2.0 C .2 16:00 .039 C C C .2 17:00 .037 .3 C 2.6 C 3.0 C .2 18:00 .026 .3 4.2 4.5 .2 19:00 .027 .2 3.6 3.9 .2 C 20:00 .022 .3 4.6 4.9 C 21:00 .020 .2 4.0 4.3 .2 C 22:00 .019 C .3 2.7 3.1 .1 23:00 C .3 2.9 3.2 .1 Average .027 .8 3.7 4.6 .1 Max .052 5.4 8.8 14.2 .4 Max Hour 10:00 06:00 06:00 06:00 10:00 Min .004 .2 1.5 1.9 .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 17-Aug-2026 15:46:00 16:11:00 65.9 70 -5.85% GPT-PS 17-Aug-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 17-Aug-2026 15:46:00 16:38:00 213.2 225 -5.22% GPT-PREC 17-Aug-2026 15:46:00 17:08:00 148.9 155 -3.9% NO2 GPT-PREC 17-Aug-2026 15:46:00 17:08:00 65 70 -7.05% NO2 Precision NO2_Diff PRECDIFF 17-Aug-2026 17:15:00 17:15:05 64.2 65.064 -1.18% NOx NOx_Auto NO-PREC 17-Aug-2026 15:46:00 16:11:00 66.6 70 -4.72% Ozone O3_Auto ZERO 17-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 17-Aug-2026 22:50:00 23:50:00 0.068 0.07 -2.57% SO2 SO2_Auto ZERO 17-Aug-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 17-Aug-2026 19:46:00 20:36:00 89.8 90 -.12% PREC 17-Aug-2026 19:46:00 21:01:00 39.6 40 -.83% Date Printed: 8/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/17/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.1 35.0 28.0 01:00 7.3 34.6 26.3 02:00 8.8 27.0 17.3 03:00 9.7 28.2 17.7 04:00 9.5 24.9 14.6 05:00 10.0 29.8 18.9 06:00 11.5 28.6 16.3 07:00 9.7 24.2 13.6 08:00 10.5 25.7 13.9 09:00 10.3 26.6 14.9 10:00 12.8 34.6 19.8 11:00 12.8 38.3 23.1 12:00 12.4 33.9 19.3 13:00 12.9 36.5 21.2 14:00 12.7 35.3 20.3 15:00 10.3 31.3 19.3 16:00 7.2 25.8 17.5 17:00 6.8 19.2 11.7 18:00 7.7 22.6 14.1 19:00 7.6 22.0 13.7 20:00 7.0 23.5 15.8 21:00 6.9 22.3 14.7 22:00 6.4 23.5 16.4 23:00 6.5 22.2 15.1 Average 9.3 28.1 17.6 Max 12.9 38.3 28.0 Max Hour 13:00 11:00 00:00 Min 6.1 19.2 11.7 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.83% Date Printed: 8/18/2026 01:30 Daily Summary Report Site: Union Cross 8/17/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .036 735.9 71.9 69.0 01:00 .025 734.6 73.1 71.9 02:00 .020 734.5 74.0 73.3 03:00 .014 734.9 74.2 73.9 04:00 .010 735.1 74.3 74.3 05:00 .008 735.5 74.1 74.1 06:00 .006 736.0 74.6 74.6 07:00 .014 736.1 77.1 75.1 08:00 .029 736.2 82.4 72.8 09:00 .043 736.4 85.4 72.1 10:00 .047 736.2 87.7 73.6 11:00 .046 735.9 89.0 74.5 12:00 .048 735.3 90.7 75.3 13:00 .045 734.9 91.6 75.9 14:00 .045 734.4 92.4 76.1 15:00 .045 734.1 91.7 75.4 16:00 .046 734.5 84.1 70.0 17:00 .038 734.0 74.7 69.9 18:00 .024 734.1 75.1 73.4 19:00 .023 733.8 75.6 74.5 20:00 .020 734.2 75.3 73.1 21:00 .017 734.2 74.6 73.4 22:00 .018 C 734.4 73.6 72.3 23:00 C 734.3 72.7 71.9 Average .029 734.9 79.5 73.3 Max .048 736.4 92.4 76.1 Max Hour 12:00 09:00 14:00 14:00 Min .006 733.8 71.9 69.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.57% 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