Date Printed: 9/15/2025 01:30 Daily Summary Report Site: Clemmons Middle 9/14/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .005 9.2 14.8 5.6 01:00 .003 9.4 14.9 5.4 02:00 .003 9.8 16.0 6.1 03:00 .001 9.5 15.1 5.5 04:00 .001 9.7 15.7 5.9 05:00 .000 9.4 14.9 5.5 06:00 .001 9.2 14.5 5.3 07:00 .005 9.1 14.4 5.3 08:00 .013 8.8 13.3 4.5 09:00 .034 8.7 14.5 5.8 10:00 .043 7.9 12.8 4.8 11:00 .048 7.9 13.5 5.6 12:00 .051 7.5 13.6 6.0 13:00 .051 7.4 13.1 5.6 14:00 .056 7.7 13.3 5.5 15:00 .062 7.9 14.5 6.6 16:00 .057 8.0 13.7 5.7 17:00 .055 7.9 15.5 7.5 18:00 .050 7.6 13.4 5.8 19:00 .041 7.9 14.2 6.2 20:00 .032 7.7 13.4 5.6 21:00 .025 8.1 13.6 5.4 22:00 .019 C 8.2 14.0 5.8 23:00 C 8.9 14.5 5.5 Average .028 8.4 14.2 5.6 Max .062 9.8 16.0 7.5 Max Hour 15:00 02:00 02:00 17:00 Min .000 7.4 12.8 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 14-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Sep-2025 22:50:00 23:50:00 0.069 0.07 -.47% Date Printed: 9/15/2025 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/14/2025 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .006 .6 15.2 15.9 .1 01:00 .009 .8 10.4 11.2 .0 02:00 .008 .4 8.6 9.0 .0 03:00 .011 .2 5.7 6.0 .0 04:00 .012 .2 5.1 5.3 .0 05:00 .011 .3 4.8 5.1 .0 06:00 .010 .9 5.1 6.0 .0 07:00 .015 2.1 7.6 9.7 .0 08:00 .026 1.6 4.9 6.6 .1 09:00 .046 .3 2.9 3.3 .1 10:00 .055 .1 2.5 2.7 .1 11:00 .058 .0 2.1 2.1 .1 12:00 .057 .0 1.7 1.8 .0 13:00 .065 .0 2.4 2.4 .0 14:00 .062 .0 2.3 2.4 .1 15:00 .057 .0 C 1.6 C 1.6 C .1 16:00 .058 C C C .0 17:00 .058 .0 C 2.3 C 2.2 C .0 18:00 .052 .0 3.6 3.6 .1 19:00 .045 .0 4.8 4.7 .0 C 20:00 .042 .0 5.2 5.1 C 21:00 .035 .0 5.2 5.2 .1 C 22:00 .026 C .0 11.6 11.6 .0 23:00 C .2 17.6 17.9 .0 Average .035 .3 5.7 6.1 .0 Max .065 2.1 17.6 17.9 .1 Max Hour 13:00 07:00 23:00 23:00 21:00 Min .006 .0 1.6 1.6 .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 14-Sep-2025 15:46:00 16:11:00 64.3 70 -8.02% GPT-PS 14-Sep-2025 15:46:00 16:18:00 0.4 0.0 .43 GPTZ 14-Sep-2025 15:46:00 16:38:00 208.2 225 -7.46% GPT-PREC 14-Sep-2025 15:46:00 17:08:00 144.7 155 -6.61% NO2 GPT-PREC 14-Sep-2025 15:46:00 17:08:00 64.5 70 -7.78% NO2 Precision NO2_Diff PRECDIFF 14-Sep-2025 17:15:00 17:15:05 63.4 64.555 -1.7% NOx NOx_Auto NO-PREC 14-Sep-2025 15:46:00 16:11:00 64.3 70 -8.07% Ozone O3_Auto ZERO 14-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Sep-2025 22:50:00 23:50:00 0.069 0.07 -.43% SO2 SO2_Auto ZERO 14-Sep-2025 19:46:00 20:11:00 0 0.0 -.01 SPAN 14-Sep-2025 19:46:00 20:36:00 86.5 90 -3.8% PREC 14-Sep-2025 19:46:00 21:01:00 38.6 40 -3.36% Date Printed: 9/15/2025 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/14/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.3 20.0 7.6 01:00 12.8 19.2 6.5 02:00 11.8 18.3 6.5 03:00 10.7 16.1 5.4 04:00 10.5 16.0 5.5 05:00 9.8 15.7 5.9 06:00 9.6 15.2 5.6 07:00 8.9 15.3 6.2 08:00 9.8 16.4 6.1 09:00 8.5 16.5 7.5 10:00 8.3 14.9 6.1 11:00 8.1 15.1 6.4 12:00 7.8 14.5 6.0 13:00 7.5 16.4 8.1 14:00 7.7 15.5 7.0 15:00 7.7 15.2 6.8 16:00 8.2 15.9 7.0 17:00 8.2 15.2 6.4 18:00 7.9 15.4 7.0 19:00 8.2 15.6 6.9 20:00 8.6 16.0 7.1 21:00 8.3 14.7 6.1 22:00 9.3 17.2 7.6 23:00 10.5 18.7 8.0 Average 9.2 16.2 6.6 Max 12.8 20.0 8.1 Max Hour 01:00 00:00 13:00 Min 7.5 14.5 5.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.36% Date Printed: 9/15/2025 01:30 Daily Summary Report Site: Union Cross 9/14/2025 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .006 737.8 59.6 56.0 01:00 .012 737.4 60.0 55.4 02:00 .011 737.1 59.3 55.0 03:00 .011 736.9 58.9 54.8 04:00 .009 737.0 58.4 54.9 05:00 .010 737.3 58.4 55.5 06:00 .005 737.1 57.5 55.8 07:00 .016 737.3 63.0 57.4 08:00 .028 737.4 68.2 57.9 09:00 .042 737.5 72.9 58.0 10:00 .049 737.3 75.1 58.2 11:00 .054 736.8 77.3 59.4 12:00 .057 736.7 79.5 59.6 13:00 .065 736.5 80.3 59.9 14:00 .057 736.4 80.8 60.2 15:00 .055 736.3 80.4 60.4 16:00 .057 736.5 80.2 59.8 17:00 .055 736.7 78.6 59.0 18:00 .047 736.7 75.4 58.8 19:00 .045 737.1 72.0 57.6 20:00 .037 737.5 68.9 57.5 21:00 .032 737.6 65.3 57.1 22:00 .026 C 737.8 64.2 57.9 23:00 C 737.9 62.9 58.4 Average .034 737.1 69.0 57.6 Max .065 737.9 80.8 60.4 Max Hour 13:00 23:00 14:00 15:00 Min .005 736.3 57.5 54.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Sep-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Sep-2025 22:50:00 23:50:00 0.065 0.073 -10.25% 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