Date Printed: 9/14/2025 01:30 Daily Summary Report Site: Clemmons Middle 9/13/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .005 7.3 12.4 5.1 01:00 .006 7.6 13.5 5.9 02:00 .010 7.6 13.1 5.5 03:00 .010 7.2 12.1 4.8 04:00 .012 7.2 12.1 4.8 05:00 .011 7.4 12.0 4.5 06:00 .007 7.3 12.3 5.0 07:00 .015 7.2 12.5 5.2 08:00 .017 6.1 12.3 6.2 09:00 .030 5.3 11.8 6.5 10:00 .042 5.4 10.0 4.5 11:00 .049 5.6 11.0 5.4 12:00 .050 5.7 12.4 6.6 13:00 .051 5.9 11.3 5.3 14:00 .054 6.3 11.4 5.1 15:00 .053 6.3 12.6 6.2 16:00 .048 6.2 12.0 5.8 17:00 .046 6.0 11.8 5.7 18:00 .040 6.1 11.6 5.5 19:00 .033 6.0 11.3 5.3 20:00 .028 6.3 11.7 5.4 21:00 .021 7.2 11.8 4.5 22:00 .014 C 8.6 14.9 6.2 23:00 C 9.3 15.8 6.5 Average .028 6.7 12.2 5.4 Max .054 9.3 15.8 6.6 Max Hour 14:00 23:00 23:00 12:00 Min .005 5.3 10.0 4.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Sep-2025 22:50:00 23:50:00 0.07 0.07 -.36% Date Printed: 9/14/2025 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/13/2025 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .0 4.6 4.7 .0 01:00 .033 .0 2.9 2.9 .0 02:00 .032 .0 2.6 2.6 .0 03:00 .025 .0 2.5 2.5 .0 04:00 .024 .0 2.9 3.0 .0 05:00 .028 .1 2.9 3.0 .0 06:00 .028 .2 3.2 3.4 .0 07:00 .030 .4 2.8 3.3 .0 08:00 .028 5.8 12.4 18.2 .4 09:00 .031 6.8 12.7 19.5 .3 10:00 .046 .4 2.6 3.0 .0 11:00 .049 .0 1.2 1.3 .0 12:00 .051 .0 1.1 1.0 .0 13:00 .052 .0 1.3 1.3 .0 14:00 .054 .3 3.1 3.5 .1 15:00 .046 1.7 C 8.8 C 10.6 C .5 16:00 .050 C C C .3 17:00 .053 .0 C 2.1 C 2.1 C .0 18:00 .048 .0 3.2 3.1 .0 19:00 .042 .0 3.8 3.7 .0 C 20:00 .033 .0 7.2 7.3 C 21:00 .026 .0 9.1 9.2 .1 C 22:00 .018 C .3 11.1 11.5 .0 23:00 C .2 13.7 13.9 .0 Average .037 .7 5.1 5.8 .0 Max .054 6.8 13.7 19.5 .5 Max Hour 14:00 09:00 23:00 09:00 15:00 Min .018 .0 1.1 1.0 .0 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 13-Sep-2025 15:46:00 16:11:00 64.2 70 -8.15% GPT-PS 13-Sep-2025 15:46:00 16:18:00 0.3 0.0 .32 GPTZ 13-Sep-2025 15:46:00 16:38:00 207.6 225 -7.71% GPT-PREC 13-Sep-2025 15:46:00 17:08:00 144.4 155 -6.84% NO2 GPT-PREC 13-Sep-2025 15:46:00 17:08:00 64.3 70 -8.06% NO2 Precision NO2_Diff PRECDIFF 13-Sep-2025 17:15:00 17:15:05 63.2 64.355 -1.71% NOx NOx_Auto NO-PREC 13-Sep-2025 15:46:00 16:11:00 64.1 70 -8.32% Ozone O3_Auto ZERO 13-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Sep-2025 22:50:00 23:50:00 0.07 0.07 .58% SO2 SO2_Auto ZERO 13-Sep-2025 19:46:00 20:11:00 0 0.0 -.06 SPAN 13-Sep-2025 19:46:00 20:36:00 86.7 90 -3.66% PREC 13-Sep-2025 19:46:00 21:01:00 38.7 40 -3.2% Date Printed: 9/14/2025 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/13/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.0 14.5 6.4 01:00 7.9 14.6 6.6 02:00 7.6 13.5 5.9 03:00 7.6 13.3 5.7 04:00 7.9 13.2 5.2 05:00 7.4 12.9 5.5 06:00 7.1 12.5 5.5 07:00 6.8 12.7 5.8 08:00 6.4 14.3 7.8 09:00 6.2 14.0 7.5 10:00 6.0 11.4 5.0 11:00 5.7 11.6 5.5 12:00 5.9 11.8 5.5 13:00 6.0 12.2 5.7 14:00 6.2 12.4 5.7 15:00 6.2 13.2 6.5 16:00 6.1 12.5 6.0 17:00 6.4 12.8 5.9 18:00 6.6 13.4 6.5 19:00 7.5 14.2 6.4 20:00 7.8 16.9 8.9 21:00 10.1 17.6 7.3 22:00 14.5 22.8 8.1 23:00 11.4 18.8 7.3 Average 7.4 14.0 6.3 Max 14.5 22.8 8.9 Max Hour 22:00 22:00 20:00 Min 5.7 11.4 5.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.2% Date Printed: 9/14/2025 01:30 Daily Summary Report Site: Union Cross 9/13/2025 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .021 740.1 62.8 57.9 01:00 .028 740.0 62.6 56.7 02:00 .030 739.7 61.4 56.7 03:00 .028 739.8 60.0 56.6 04:00 .024 740.0 58.5 56.5 05:00 .023 740.1 58.1 56.7 06:00 .019 740.2 57.9 56.8 07:00 .026 740.4 60.8 56.6 08:00 .040 740.6 65.5 55.6 09:00 .045 B 740.6 68.7 54.6 10:00 .047 740.4 71.0 54.5 11:00 .047 740.0 73.0 55.0 12:00 .050 739.6 74.8 55.3 13:00 .051 739.0 76.3 55.7 14:00 .052 738.3 77.7 56.7 15:00 .052 737.9 78.5 57.4 16:00 .052 737.5 78.1 57.4 17:00 .049 737.4 77.1 57.1 18:00 .043 737.4 73.7 55.6 19:00 .039 737.6 70.9 54.4 20:00 .038 737.8 68.4 54.5 21:00 .028 737.8 64.9 54.8 22:00 .020 C 737.9 61.3 55.4 23:00 C 737.9 60.5 55.9 Average .037 739.0 67.6 56.0 Max .052 740.6 78.5 57.9 Max Hour 16:00 09:00 15:00 00:00 Min .019 737.4 57.9 54.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Sep-2025 22:50:00 23:50:00 0.07 0.07 .7% 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