Date Printed: 8/26/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/25/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .013 7.7 14.1 6.3 01:00 .015 8.3 14.9 6.5 02:00 .014 8.5 15.4 6.8 03:00 .011 8.5 15.4 6.9 04:00 .008 8.5 16.1 7.5 05:00 .005 8.4 16.6 8.1 06:00 .003 D 8.3 15.7 7.4 07:00 D 8.6 16.8 8.1 08:00 D 8.2 15.8 7.5 09:00 .030 8.2 14.9 6.7 10:00 .035 8.8 16.0 7.1 11:00 .047 9.2 16.4 7.1 12:00 .054 B 9.2 16.2 7.0 13:00 .061 8.8 15.8 7.0 14:00 .056 8.7 18.7 10.0 15:00 .047 7.9 15.8 7.8 16:00 .044 7.7 13.7 5.9 17:00 .038 7.5 13.3 5.7 18:00 .034 7.7 12.8 5.1 19:00 .027 7.7 13.7 5.9 20:00 .018 7.6 15.0 7.3 21:00 .016 7.4 13.6 6.2 22:00 .012 C 7.9 14.6 6.6 23:00 C 8.1 15.4 7.2 Average .028 8.2 15.2 6.9 Max .061 9.2 18.7 10.0 Max Hour 13:00 12:00 14:00 14:00 Min .003 7.4 12.8 5.1 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Aug-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 25-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.34% Date Printed: 8/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/25/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .033 .1 1.5 1.6 .1 01:00 .031 .1 1.8 2.0 .1 02:00 .028 .1 2.5 2.7 .1 03:00 .024 .1 3.9 4.1 .1 04:00 .024 .0 2.7 2.8 .1 05:00 .022 .1 3.3 3.5 .1 06:00 .016 .8 6.6 7.4 .1 07:00 .023 1.5 4.2 5.8 .2 08:00 .031 .9 2.8 3.8 .2 09:00 .028 3.6 7.1 10.8 .3 10:00 .040 .4 2.0 2.5 .3 11:00 .046 .2 1.5 1.8 .2 12:00 .050 .2 1.7 1.9 .2 13:00 .057 .2 2.1 2.4 .2 14:00 .057 .1 2.1 2.3 .2 15:00 .050 .1 C 1.6 C 1.8 C .2 16:00 .046 C C C .2 17:00 .051 .1 C 1.9 C 2.0 C .2 18:00 .047 .1 3.6 3.7 .2 19:00 .037 .0 5.3 5.4 .2 C 20:00 .040 .0 5.6 5.7 C 21:00 .034 .1 7.0 7.1 .2 C 22:00 .028 C .1 6.8 7.0 .1 23:00 C .2 7.2 7.5 .1 Average .036 .3 3.6 4.1 .1 Max .057 3.6 7.2 10.8 .3 Max Hour 14:00 09:00 23:00 09:00 10:00 Min .016 .0 1.5 1.6 .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 25-Aug-2026 15:46:00 16:11:00 65.7 70 -6.11% GPT-PS 25-Aug-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 25-Aug-2026 15:46:00 16:38:00 212.4 225 -5.59% GPT-PREC 25-Aug-2026 15:46:00 17:08:00 148.6 155 -4.11% NO2 GPT-PREC 25-Aug-2026 15:46:00 17:08:00 64.6 70 -7.71% NO2 Precision NO2_Diff PRECDIFF 25-Aug-2026 17:15:00 17:15:05 63.7 64.604 -1.26% NOx NOx_Auto NO-PREC 25-Aug-2026 15:46:00 16:11:00 65.6 70 -6.2% Ozone O3_Auto ZERO 25-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Aug-2026 22:50:00 23:50:00 0.069 0.07 -1.67% SO2 SO2_Auto ZERO 25-Aug-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 25-Aug-2026 19:46:00 20:36:00 89.2 90 -.87% PREC 25-Aug-2026 19:46:00 21:01:00 39.4 40 -1.49% Date Printed: 8/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/25/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.2 15.4 7.1 01:00 8.4 16.7 8.2 02:00 8.3 15.7 7.3 03:00 8.2 15.0 6.7 04:00 7.8 14.5 6.7 05:00 7.9 14.0 6.1 06:00 7.9 14.2 6.3 07:00 7.8 15.0 7.0 08:00 7.7 14.6 6.6 09:00 8.1 15.1 6.6 10:00 B B B 11:00 8.8 B 17.5 B 8.0 B 12:00 8.6 16.0 6.8 13:00 8.4 17.7 8.6 14:00 7.7 15.8 7.4 15:00 7.4 15.9 7.7 16:00 6.3 13.7 6.7 17:00 6.9 14.8 7.3 18:00 7.2 14.0 6.4 19:00 7.6 15.0 7.0 20:00 9.3 18.3 8.6 21:00 10.2 19.5 9.0 22:00 12.7 22.9 9.8 23:00 11.6 21.0 9.2 Average 8.3 16.1 7.4 Max 12.7 22.9 9.8 Max Hour 22:00 22:00 22:00 Min 6.3 13.7 6.1 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.49% Date Printed: 8/26/2026 01:30 Daily Summary Report Site: Union Cross 8/25/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .032 737.7 67.2 55.1 01:00 .029 737.7 65.4 54.9 02:00 .027 737.6 64.2 54.5 03:00 .023 737.5 63.4 54.0 04:00 .016 737.7 62.8 53.2 05:00 .017 738.0 61.5 52.8 06:00 .014 738.4 61.9 52.5 07:00 .014 738.9 65.5 53.4 08:00 .026 739.3 69.0 54.2 09:00 .035 739.5 72.0 55.0 10:00 .040 739.4 74.1 55.7 11:00 .046 738.9 76.4 56.5 12:00 .051 738.5 78.3 57.7 13:00 .055 738.0 80.3 59.6 14:00 .062 737.4 82.3 61.3 15:00 .063 737.0 83.0 61.9 16:00 .052 737.0 83.0 61.7 17:00 .051 737.3 82.6 59.7 18:00 .042 737.5 81.6 60.6 19:00 .039 737.8 74.8 60.1 20:00 .043 738.3 72.8 59.5 21:00 .037 738.4 71.7 59.0 22:00 .029 C 738.5 68.6 59.1 23:00 C 738.5 66.1 59.5 Average .036 738.1 72.0 57.1 Max .063 739.5 83.0 61.9 Max Hour 15:00 09:00 16:00 15:00 Min .014 737.0 61.5 52.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Aug-2026 22:50:00 23:50:00 0.07 0.07 .74% 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