Date Printed: 8/21/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/20/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 14.6 25.9 11.2 01:00 .001 15.0 26.3 11.2 02:00 .000 13.3 23.4 10.0 03:00 .000 12.3 21.6 9.2 04:00 .000 12.2 21.5 9.3 05:00 .000 11.6 20.8 9.1 06:00 .000 10.6 21.0 10.4 07:00 .003 10.4 19.2 8.8 08:00 .016 10.7 19.6 8.9 09:00 .035 10.6 19.4 8.8 10:00 .041 10.7 18.5 7.7 11:00 .053 10.8 22.6 11.7 12:00 .049 B 9.9 18.5 8.6 13:00 .049 9.6 18.2 8.6 14:00 .055 9.7 18.8 9.0 15:00 .059 9.9 18.2 8.3 16:00 .056 9.4 19.1 9.6 17:00 .053 B 8.7 16.3 7.5 18:00 .045 8.2 14.8 6.6 19:00 .036 9.7 26.3 16.5 20:00 .027 8.9 17.3 8.4 21:00 .023 8.6 15.5 6.9 22:00 .021 C 8.3 15.1 6.7 23:00 C 7.9 14.5 6.5 Average .027 10.4 19.6 9.1 Max .059 15.0 26.3 16.5 Max Hour 15:00 01:00 19:00 19:00 Min .000 7.9 14.5 6.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 20-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 20-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.26% Date Printed: 8/21/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/20/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .009 .6 11.0 11.7 .2 01:00 .007 .7 11.3 12.0 .2 02:00 .003 2.0 10.5 12.6 .2 03:00 .004 1.5 8.7 10.2 .2 04:00 .003 1.8 9.0 10.9 .2 05:00 .002 8.8 9.2 18.0 .3 06:00 .003 19.3 8.7 28.0 .4 07:00 .018 11.3 10.9 22.3 .4 08:00 .039 .7 5.1 5.8 .3 09:00 .048 .6 5.0 5.6 .4 10:00 .050 .5 4.5 5.0 .4 11:00 .058 .3 3.0 3.3 .3 12:00 .049 .2 1.8 2.1 .3 13:00 .049 .2 1.9 2.2 .2 14:00 .055 .2 1.9 2.1 .2 15:00 .060 .1 C 2.1 C 2.3 C .2 16:00 .057 C C C .2 17:00 .051 .2 C 2.4 C 2.7 C .2 18:00 .048 .1 2.8 2.9 .2 19:00 .044 .0 5.0 5.0 .2 C 20:00 .034 .2 11.8 12.0 C 21:00 .037 .1 6.9 7.1 .2 C 22:00 .030 C .1 7.9 8.1 .2 23:00 C .2 7.0 7.2 .1 Average .032 2.1 6.4 8.6 .2 Max .060 19.3 11.8 28.0 .4 Max Hour 15:00 06:00 20:00 06:00 10:00 Min .002 .0 1.8 2.1 .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 20-Aug-2026 15:46:00 16:11:00 65.9 70 -5.77% GPT-PS 20-Aug-2026 15:46:00 16:18:00 0.5 0.0 .54 GPTZ 20-Aug-2026 15:46:00 16:38:00 213.6 225 -5.05% GPT-PREC 20-Aug-2026 15:46:00 17:08:00 149.2 155 -3.69% NO2 GPT-PREC 20-Aug-2026 15:46:00 17:08:00 64.6 70 -7.63% NO2 Precision NO2_Diff PRECDIFF 20-Aug-2026 17:15:00 17:15:05 64.3 64.661 -.47% NOx NOx_Auto NO-PREC 20-Aug-2026 15:46:00 16:11:00 66.1 70 -5.54% Ozone O3_Auto ZERO 20-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 20-Aug-2026 22:50:00 23:50:00 0.067 0.07 -4.04% SO2 SO2_Auto ZERO 20-Aug-2026 19:46:00 20:11:00 0.1 0.0 .1 SPAN 20-Aug-2026 19:46:00 20:36:00 89.4 90 -.57% PREC 20-Aug-2026 19:46:00 21:01:00 39.5 40 -1.04% Date Printed: 8/21/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/20/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.7 21.4 8.1 01:00 12.6 21.5 8.2 02:00 12.5 21.3 8.3 03:00 12.7 23.3 10.1 04:00 13.2 24.4 10.6 05:00 13.3 27.4 13.6 06:00 13.0 26.9 13.2 07:00 17.0 37.1 18.6 08:00 11.3 20.8 8.6 09:00 11.9 22.1 9.1 10:00 11.1 20.5 8.4 11:00 10.2 19.4 8.0 12:00 9.8 26.0 14.5 13:00 9.9 29.2 17.4 14:00 9.1 16.2 6.1 15:00 9.4 18.5 8.0 16:00 8.9 18.3 8.3 17:00 8.1 15.8 6.8 18:00 8.5 16.8 7.4 19:00 9.1 16.8 6.9 20:00 10.0 18.6 7.8 21:00 7.3 14.2 6.4 22:00 7.2 13.8 6.2 23:00 7.2 13.6 6.0 Average 10.6 20.9 9.4 Max 17.0 37.1 18.6 Max Hour 07:00 07:00 07:00 Min 7.2 13.6 6.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.04% Date Printed: 8/21/2026 01:30 Daily Summary Report Site: Union Cross 8/20/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .014 736.1 74.4 67.5 01:00 .018 735.6 73.1 67.1 02:00 .016 735.0 73.8 67.2 03:00 .005 735.1 70.6 68.1 04:00 .004 735.5 70.3 68.3 05:00 .003 735.7 70.1 68.3 06:00 .005 736.2 72.5 69.1 07:00 .016 736.4 78.6 70.0 08:00 .032 736.7 80.6 70.1 09:00 .048 736.9 82.6 71.1 10:00 .048 737.3 83.2 72.3 11:00 .055 737.2 85.3 72.8 12:00 .058 736.6 88.0 72.1 13:00 .053 735.5 88.7 71.5 14:00 .056 734.9 89.3 72.1 15:00 .059 734.8 90.1 73.1 16:00 .060 734.8 90.1 73.3 17:00 .059 735.1 89.2 72.8 18:00 .053 735.3 87.7 72.7 19:00 .042 735.7 84.4 72.1 20:00 .033 736.1 80.7 72.4 21:00 .030 736.3 80.7 70.3 22:00 .034 C 736.5 80.2 67.8 23:00 C 736.7 78.6 67.8 Average .034 735.9 80.9 70.4 Max .060 737.3 90.1 73.3 Max Hour 16:00 10:00 16:00 16:00 Min .003 734.8 70.1 67.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 20-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 20-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.93% 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