Date Printed: 8/10/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/9/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .016 5.3 13.0 7.6 01:00 .012 B 5.4 13.6 8.1 02:00 .007 B 5.9 16.4 10.5 03:00 .006 5.9 16.4 10.4 04:00 .004 5.8 16.6 10.7 05:00 .002 6.1 16.3 10.1 06:00 .004 5.9 17.7 11.8 07:00 .009 5.8 14.2 8.3 08:00 .018 5.7 12.6 6.9 09:00 .026 5.8 12.9 7.1 10:00 .030 6.4 13.2 6.7 11:00 .036 8.6 15.7 7.1 12:00 .039 10.2 19.1 8.9 13:00 .040 10.5 19.0 8.5 14:00 .041 10.8 19.6 8.7 15:00 .039 10.7 19.1 8.4 16:00 .038 10.2 19.2 9.0 17:00 .033 9.6 20.5 10.8 18:00 .034 9.4 17.0 7.6 19:00 .032 B 8.6 14.6 5.9 20:00 .028 B 8.7 15.9 7.1 21:00 .020 9.1 17.7 8.6 22:00 .020 C 9.1 16.7 7.6 23:00 C 8.8 16.7 7.9 Average .023 7.8 16.4 8.5 Max .041 10.8 20.5 11.8 Max Hour 14:00 14:00 17:00 06:00 Min .002 5.3 12.6 5.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Aug-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 09-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.56% Date Printed: 8/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/9/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .016 .1 3.7 3.9 .1 01:00 .010 .3 4.4 4.7 .1 02:00 .013 .1 3.9 4.1 .1 03:00 .010 .2 3.7 3.9 .1 04:00 .008 .2 3.8 4.0 .1 05:00 .006 .3 3.2 3.5 .1 06:00 .006 1.3 3.4 4.8 .1 07:00 .012 1.4 3.0 4.4 .1 08:00 .021 .8 2.1 2.9 .1 09:00 .029 .4 1.7 2.2 .1 10:00 .035 .2 1.1 1.4 .1 11:00 .038 .2 .9 1.1 .1 12:00 .044 .1 .9 1.1 .1 13:00 .044 .1 1.0 1.2 .1 14:00 .047 .2 1.3 1.5 .1 15:00 .045 .1 C 1.2 C 1.4 C .1 16:00 .044 C C C .2 17:00 .038 .2 C 1.7 C 1.9 C .1 18:00 .037 .1 2.5 2.7 .1 19:00 .030 .1 5.6 5.7 .1 C 20:00 .022 .2 6.8 7.0 C 21:00 .025 .1 3.9 4.0 .1 C 22:00 .022 C .2 3.7 4.0 .1 23:00 C .2 2.6 2.8 .1 Average .026 .3 2.8 3.2 .1 Max .047 1.4 6.8 7.0 .2 Max Hour 14:00 07:00 20:00 20:00 16:00 Min .006 .1 .9 1.1 .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 09-Aug-2026 15:46:00 16:11:00 65.7 70 -6.01% GPT-PS 09-Aug-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 09-Aug-2026 15:46:00 16:38:00 213.2 225 -5.24% GPT-PREC 09-Aug-2026 15:46:00 17:08:00 148.9 155 -3.9% NO2 GPT-PREC 09-Aug-2026 15:46:00 17:08:00 65 70 -7.09% NO2 Precision NO2_Diff PRECDIFF 09-Aug-2026 17:15:00 17:15:05 64.2 65.035 -1.19% NOx NOx_Auto NO-PREC 09-Aug-2026 15:46:00 16:11:00 66 70 -5.6% Ozone O3_Auto ZERO 09-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.49% SO2 SO2_Auto ZERO 09-Aug-2026 19:46:00 20:11:00 0 0.0 .01 SPAN 09-Aug-2026 19:46:00 20:36:00 89.7 90 -.32% PREC 09-Aug-2026 19:46:00 21:01:00 39.4 40 -1.27% Date Printed: 8/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/9/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.6 21.6 14.6 01:00 8.3 34.9 26.0 02:00 7.2 24.1 16.5 03:00 7.4 26.4 18.6 04:00 7.5 24.3 16.5 05:00 7.3 26.1 18.4 06:00 6.9 23.0 15.7 07:00 6.0 19.5 12.9 08:00 6.0 14.3 7.7 09:00 6.1 13.9 7.2 10:00 8.0 17.4 8.6 11:00 9.8 19.8 9.0 12:00 11.2 21.4 9.1 13:00 11.2 22.3 9.8 14:00 11.8 23.4 10.2 15:00 11.7 23.2 10.1 16:00 11.7 22.5 9.6 17:00 10.9 22.1 10.1 18:00 10.3 20.0 9.0 19:00 10.4 20.0 8.9 20:00 10.0 18.1 7.6 21:00 9.9 18.2 7.9 22:00 10.2 19.3 8.6 23:00 9.9 19.4 9.0 Average 9.0 21.4 11.7 Max 11.8 34.9 26.0 Max Hour 14:00 01:00 01:00 Min 6.0 13.9 7.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.27% Date Printed: 8/10/2026 01:30 Daily Summary Report Site: Union Cross 8/9/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .018 738.8 71.2 69.5 01:00 .014 738.5 70.4 69.3 02:00 .011 738.4 70.0 69.2 03:00 .008 738.5 69.4 68.8 04:00 .006 738.8 69.0 68.6 05:00 .007 738.9 69.0 68.8 06:00 .010 739.3 70.2 69.7 07:00 .014 739.5 73.7 69.9 08:00 .021 739.6 77.4 70.3 09:00 .030 739.5 80.4 70.3 10:00 .038 739.7 83.4 70.7 11:00 .040 739.6 85.6 71.6 12:00 .044 739.4 87.1 71.3 13:00 .046 738.9 88.6 71.9 14:00 .047 738.4 89.4 71.9 15:00 .046 738.0 90.0 72.7 16:00 .044 737.6 89.6 72.5 17:00 .042 737.8 88.7 71.9 18:00 .039 738.1 83.9 71.7 19:00 .030 738.5 80.6 71.8 20:00 .032 738.9 79.6 70.8 21:00 .022 739.1 76.5 72.1 22:00 .022 C 739.5 75.1 71.4 23:00 C 739.5 74.9 69.2 Average .027 738.8 78.9 70.6 Max .047 739.7 90.0 72.7 Max Hour 14:00 10:00 15:00 15:00 Min .006 737.6 69.0 68.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Aug-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 09-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.1% 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