Date Printed: 10/29/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/28/2026 Interval: 001h O3 PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .010 9.2 16.7 7.5 01:00 .010 9.6 16.0 6.4 02:00 .010 9.5 16.1 6.6 03:00 .011 9.6 16.3 6.7 04:00 .010 9.7 15.9 6.1 05:00 .008 10.2 18.2 7.9 06:00 .003 11.2 20.7 9.5 07:00 .005 12.2 22.6 10.4 08:00 .022 13.2 24.1 10.8 09:00 .045 B 13.5 21.5 7.9 10:00 .045 12.8 18.9 6.0 11:00 .049 11.3 17.6 6.3 12:00 .055 10.8 19.5 8.7 13:00 .058 11.7 20.2 8.5 14:00 .061 12.2 23.2 10.9 15:00 .057 12.2 22.9 10.6 16:00 .054 12.1 22.7 10.5 17:00 .045 12.1 22.3 10.2 18:00 .029 13.3 23.2 9.8 19:00 .023 13.2 22.2 8.9 20:00 .019 14.4 23.2 8.8 21:00 .016 15.7 23.9 8.1 22:00 .017 C 16.7 25.6 8.8 23:00 C 17.5 24.5 7.0 Average .028 12.2 20.7 8.4 Max .061 17.5 25.6 10.9 Max Hour 14:00 23:00 22:00 14:00 Min .003 9.2 15.9 6.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error O3 O3_Auto ZERO 28-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.76% Date Printed: 10/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/28/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .036 .1 3.8 3.9 .1 01:00 .035 .1 3.9 4.0 .1 02:00 .033 .0 4.0 4.0 .1 03:00 .033 .1 3.1 3.3 .1 04:00 .031 .0 3.3 3.4 .1 05:00 .032 .2 4.4 4.7 .1 06:00 .028 .3 B 10.8 B 11.1 B .1 07:00 .034 B B B .1 08:00 .039 B B B .1 09:00 .043 B B B .1 10:00 .047 B B B .1 11:00 .051 .4 2.4 2.8 .2 12:00 .054 .3 2.3 2.7 .1 13:00 .056 .2 2.4 2.7 .2 14:00 .057 .2 2.5 2.8 .2 15:00 .055 .1 C 2.7 C 2.9 C .2 16:00 .052 C C C .2 17:00 .045 .1 C 6.4 C 6.6 C .2 18:00 .040 .1 7.1 7.3 .2 19:00 .032 .2 11.4 11.7 .2 C 20:00 .030 .8 9.9 10.7 C 21:00 .037 .1 6.2 6.3 .2 C 22:00 .034 C .1 5.3 5.4 .1 23:00 C .2 4.2 4.4 .1 Average .040 .1 5.0 5.3 .1 Max .057 .8 11.4 11.7 .2 Max Hour 14:00 20:00 19:00 19:00 21:00 Min .028 .0 2.3 2.7 .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 28-Oct-2026 15:46:00 16:11:00 69.2 70 -1.02% GPT-PS 28-Oct-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 28-Oct-2026 15:46:00 16:38:00 223.1 225 -.82% GPT-PREC 28-Oct-2026 15:46:00 17:08:00 155.5 155 .33% NO2 GPT-PREC 28-Oct-2026 15:46:00 17:08:00 68.4 70 -2.23% NO2 Precision NO2_Diff PRECDIFF 28-Oct-2026 17:15:00 17:15:05 67.6 68.441 -1.18% NOx NOx_Auto NO-PREC 28-Oct-2026 15:46:00 16:11:00 69.2 70 -1.12% Ozone O3_Auto ZERO 28-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 28-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.28% SO2 SO2_Auto ZERO 28-Oct-2026 19:46:00 20:11:00 0 0.0 .04 SPAN 28-Oct-2026 19:46:00 20:36:00 86.2 90 -4.21% PREC 28-Oct-2026 19:46:00 21:01:00 38.2 40 -4.29% Date Printed: 10/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/28/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.8 15.5 7.1 01:00 8.4 15.8 7.8 02:00 8.2 14.1 6.2 03:00 8.7 16.2 7.9 04:00 9.5 16.7 7.7 05:00 9.8 15.6 6.2 06:00 11.4 18.0 7.1 07:00 12.3 21.1 9.3 08:00 13.5 21.3 8.4 09:00 11.5 16.8 5.7 10:00 B B B 11:00 B B B 12:00 10.1 18.1 7.9 13:00 11.2 19.6 8.3 14:00 11.5 21.3 9.6 15:00 11.2 21.8 10.5 16:00 11.7 24.4 12.6 17:00 11.9 21.0 9.2 18:00 13.1 22.7 9.8 19:00 15.5 26.9 11.6 20:00 15.3 25.9 10.8 21:00 14.3 24.0 10.0 22:00 13.7 21.5 8.1 23:00 12.8 20.6 8.0 Average 11.5 19.9 8.6 Max 15.5 26.9 12.6 Max Hour 19:00 19:00 16:00 Min 8.2 14.1 5.7 Count 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.29% Date Printed: 10/29/2026 01:30 Daily Summary Report Site: Union Cross 10/28/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .029 743.8 56.5 45.2 01:00 .025 743.7 54.6 45.1 02:00 .020 743.8 52.8 45.2 03:00 .024 744.0 50.0 46.0 04:00 .022 744.3 49.2 46.6 05:00 .020 744.6 49.0 46.4 06:00 .020 744.9 49.1 47.3 07:00 .027 745.1 50.5 49.5 08:00 .037 745.6 52.2 51.3 09:00 .040 745.7 53.1 52.9 10:00 .044 745.7 55.8 52.9 11:00 .046 745.3 59.1 52.6 12:00 .054 744.7 62.7 52.6 13:00 .057 744.2 64.3 52.5 14:00 .057 743.8 66.2 53.2 15:00 .055 743.7 66.2 53.9 16:00 .051 743.5 66.0 54.6 17:00 .040 743.4 64.4 54.8 18:00 .026 743.5 60.9 54.9 19:00 .020 743.6 59.7 54.7 20:00 .027 743.5 59.5 54.1 21:00 .032 743.6 59.9 53.4 22:00 .030 C 743.5 59.3 53.8 23:00 C 743.4 58.4 54.1 Average .034 744.2 57.4 51.1 Max .057 745.7 66.2 54.9 Max Hour 14:00 10:00 15:00 18:00 Min .020 743.4 49.0 45.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 28-Oct-2026 22:50:00 23:50:00 0.07 0.07 1.08% 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