Date Printed: 10/28/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/27/2026 Interval: 001h O3 PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 6.0 12.2 6.1 01:00 .003 B 5.6 11.8 6.1 02:00 .002 5.9 11.8 5.8 03:00 .002 6.1 11.7 5.6 04:00 .002 6.1 12.2 6.0 05:00 .002 6.1 12.6 6.4 06:00 .002 6.3 16.9 10.5 07:00 .004 6.5 15.0 8.5 08:00 .007 6.3 13.6 7.3 09:00 .011 6.0 14.3 8.3 10:00 .037 5.1 14.6 9.4 11:00 .046 5.0 14.6 9.5 12:00 .054 4.9 13.7 8.8 13:00 .058 5.3 14.2 8.8 14:00 .059 5.1 11.7 6.6 15:00 .060 5.5 12.9 7.3 16:00 .057 5.7 13.7 7.9 17:00 .030 B 6.3 17.6 11.2 18:00 .020 7.2 18.9 11.7 19:00 .013 8.3 20.7 12.4 20:00 .019 8.0 16.8 8.8 21:00 .018 8.2 16.0 7.7 22:00 .014 C 8.4 16.5 8.0 23:00 C 8.8 16.3 7.5 Average .022 6.3 14.5 8.1 Max .060 8.8 20.7 12.4 Max Hour 15:00 23:00 19:00 19:00 Min .002 4.9 11.7 5.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error O3 O3_Auto ZERO 27-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Oct-2026 22:50:00 23:50:00 0.069 0.069 .39% Date Printed: 10/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/27/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .003 11.7 17.5 29.3 .3 01:00 .002 11.1 17.7 28.8 .3 02:00 .002 8.7 15.3 24.0 .2 03:00 .002 8.0 14.8 22.8 .2 04:00 .002 9.6 13.4 23.0 .2 05:00 .003 8.2 11.2 19.4 .2 06:00 .002 15.6 10.4 26.1 .3 07:00 .012 17.0 9.4 26.4 .4 08:00 .029 1.6 5.3 7.0 .1 09:00 .036 .7 2.8 3.6 .4 10:00 .040 .5 2.2 2.8 .4 11:00 .049 .3 2.0 2.4 .4 12:00 .054 .1 1.7 1.8 .4 13:00 .057 .1 1.8 1.9 .4 14:00 .059 .1 2.0 2.1 .5 15:00 .059 .1 C 2.3 C 2.5 C .5 16:00 .058 C C C .5 17:00 .052 .0 C 4.1 C 4.2 C .4 18:00 .044 .1 8.9 9.1 .4 19:00 .040 .1 10.4 10.6 .3 C 20:00 .042 .0 7.2 7.3 C 21:00 .037 1.0 10.6 11.6 .3 C 22:00 .040 C .0 6.4 6.5 .1 23:00 C .2 6.6 6.8 .1 Average .031 4.1 8.0 12.1 .3 Max .059 17.0 17.7 29.3 .5 Max Hour 15:00 07:00 01:00 00:00 16:00 Min .002 .0 1.7 1.8 .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 27-Oct-2026 15:46:00 16:11:00 69 70 -1.42% GPT-PS 27-Oct-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 27-Oct-2026 15:46:00 16:38:00 223.1 225 -.82% GPT-PREC 27-Oct-2026 15:46:00 17:08:00 156.2 155 .82% NO2 GPT-PREC 27-Oct-2026 15:46:00 17:08:00 67.9 70 -2.9% NO2 Precision NO2_Diff PRECDIFF 27-Oct-2026 17:15:00 17:15:05 66.8 67.968 -1.59% NOx NOx_Auto NO-PREC 27-Oct-2026 15:46:00 16:11:00 68.9 70 -1.5% Ozone O3_Auto ZERO 27-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.04% SO2 SO2_Auto ZERO 27-Oct-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 27-Oct-2026 19:46:00 20:36:00 86.3 90 -4.11% PREC 27-Oct-2026 19:46:00 21:01:00 38 40 -4.75% Date Printed: 10/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/27/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.9 16.8 8.4 01:00 8.8 16.1 7.8 02:00 8.4 15.5 7.6 03:00 8.5 16.0 8.1 04:00 9.1 19.4 10.9 05:00 7.7 14.2 7.1 06:00 7.6 14.7 7.6 07:00 6.7 15.7 9.5 08:00 4.3 10.8 6.6 09:00 4.2 10.3 6.1 10:00 4.4 11.6 7.1 11:00 4.8 14.4 9.4 12:00 4.9 14.0 8.9 13:00 4.9 12.8 7.6 14:00 5.2 14.4 8.9 15:00 5.4 14.7 9.1 16:00 5.6 14.7 8.9 17:00 7.4 16.5 9.0 18:00 7.5 17.9 10.4 19:00 8.0 16.8 9.0 20:00 7.5 17.1 9.7 21:00 8.0 17.3 9.5 22:00 9.4 17.1 8.0 23:00 8.2 15.6 7.8 Average 6.8 15.1 8.4 Max 9.4 19.4 10.9 Max Hour 22:00 04:00 04:00 Min 4.2 10.3 6.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.75% Date Printed: 10/28/2026 01:30 Daily Summary Report Site: Union Cross 10/27/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .015 742.6 01:00 .012 742.4 46.6 44.0 02:00 .009 742.2 46.8 44.5 03:00 .005 742.1 46.3 44.5 04:00 .005 742.2 48.2 44.4 05:00 .002 742.6 47.1 44.2 06:00 .004 743.0 47.6 43.2 07:00 .011 743.6 50.0 42.5 08:00 .024 744.0 56.9 44.5 09:00 .032 744.4 62.7 47.0 10:00 .041 744.4 66.2 47.7 11:00 .050 744.2 68.8 48.3 12:00 .056 743.6 70.2 48.2 13:00 .057 743.0 71.5 48.8 14:00 .058 742.7 72.3 49.3 15:00 .058 742.5 72.5 49.9 16:00 .057 742.6 71.6 49.2 17:00 .051 742.7 68.6 48.5 18:00 .041 743.2 65.2 47.4 19:00 .043 743.4 63.9 46.9 20:00 .044 743.5 62.7 46.6 21:00 .040 743.8 60.9 46.0 22:00 .042 C 743.9 60.2 45.8 23:00 C 743.8 58.4 45.4 Average .032 743.1 60.2 46.3 Max .058 744.4 72.5 49.9 Max Hour 15:00 10:00 15:00 15:00 Min .002 742.1 46.3 42.5 Count 23 24 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Oct-2026 22:50:00 23:50:00 0.07 0.07 1.38% 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