Date Printed: 6/30/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/29/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 5.2 20.9 15.6 01:00 .002 5.1 16.2 11.1 02:00 .002 4.7 14.5 9.8 03:00 .001 4.9 16.3 11.4 04:00 .001 4.9 15.4 10.4 05:00 .001 4.7 14.0 9.3 06:00 .003 4.5 13.1 8.5 07:00 .014 5.5 12.6 7.0 08:00 .022 B 6.6 12.3 5.7 09:00 .031 7.1 12.4 5.2 10:00 .037 7.6 12.3 4.7 11:00 .042 8.6 12.9 4.2 12:00 .047 8.7 14.5 5.7 13:00 .047 8.2 12.2 3.9 14:00 .044 7.7 12.6 4.8 15:00 .043 7.0 11.0 3.9 16:00 .042 5.8 10.4 4.5 17:00 .041 4.9 9.3 4.3 18:00 .040 B 4.6 9.3 4.6 19:00 .034 4.6 10.1 5.4 20:00 .028 4.5 9.0 4.4 21:00 .024 5.0 9.3 4.3 22:00 .015 C 5.5 10.2 4.7 23:00 C 5.7 11.0 5.3 Average .024 5.9 12.5 6.6 Max .047 8.7 20.9 15.6 Max Hour 13:00 12:00 00:00 00:00 Min .001 4.5 9.0 3.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 29-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.71% Date Printed: 6/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/29/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .007 1.5 12.1 13.6 -.5 01:00 .003 1.7 11.1 12.9 -.5 02:00 .004 1.4 10.5 11.9 -.5 03:00 .004 1.7 13.8 15.5 -.5 04:00 .005 1.5 11.5 13.0 -.5 05:00 .006 3.1 7.3 10.5 -.5 06:00 .013 1.4 3.6 5.0 -.5 07:00 .019 .8 2.7 3.6 -.5 08:00 .026 .8 2.0 2.8 -.5 09:00 .028 1.6 4.0 5.7 -.2 10:00 .033 .9 2.6 3.5 -.4 11:00 .037 1.3 4.1 5.5 -.1 12:00 .041 .5 2.4 3.0 -.3 13:00 .040 .3 1.4 1.8 -.5 14:00 .041 .3 1.4 1.7 -.5 15:00 .042 .3 C 1.5 C 1.8 C -.5 16:00 .042 C C C -.5 17:00 .041 .3 C 1.8 C 2.2 C -.5 18:00 .040 .3 2.4 2.7 -.5 19:00 .036 .3 3.4 3.7 -.5 C 20:00 .031 .4 4.5 4.9 C 21:00 .027 .4 4.7 5.1 -.5 C 22:00 .026 C .3 4.2 4.5 -.5 23:00 C .4 4.3 4.7 -.5 Average .025 .9 5.1 6.0 -.4 Max .042 3.1 13.8 15.5 -.1 Max Hour 16:00 05:00 03:00 03:00 11:00 Min .003 .3 1.4 1.7 -.5 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 29-Jun-2026 15:46:00 16:11:00 66.2 70 -5.39% GPT-PS 29-Jun-2026 15:46:00 16:18:00 0.4 0.0 .5 GPTZ 29-Jun-2026 15:46:00 16:38:00 214.1 225 -4.84% GPT-PREC 29-Jun-2026 15:46:00 17:08:00 149.3 155 -3.67% NO2 GPT-PREC 29-Jun-2026 15:46:00 17:08:00 65.4 70 -6.53% NO2 Precision NO2_Diff PRECDIFF 29-Jun-2026 17:15:00 17:15:05 64.7 65.428 -.97% NOx NOx_Auto NO-PREC 29-Jun-2026 15:46:00 16:11:00 66.3 70 -5.26% Ozone O3_Auto ZERO 29-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.22% SO2 SO2_Auto ZERO 29-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.7 SPAN 29-Jun-2026 19:46:00 20:36:00 86.6 90 -3.74% PREC 29-Jun-2026 19:46:00 21:01:00 38 40 -4.77% Date Printed: 6/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/29/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.6 16.5 10.5 01:00 6.1 16.7 10.2 02:00 5.7 15.0 8.9 03:00 5.8 16.7 10.5 04:00 5.7 13.8 7.8 05:00 7.1 22.1 14.6 06:00 5.7 14.3 8.2 07:00 7.2 13.7 6.1 08:00 7.4 13.7 5.9 09:00 7.8 13.9 5.5 10:00 7.7 12.9 4.6 11:00 8.9 14.4 4.9 12:00 8.4 14.2 5.2 13:00 7.4 11.8 3.9 14:00 7.2 12.7 4.9 15:00 6.0 11.8 5.3 16:00 4.9 11.3 5.8 17:00 5.9 26.4 19.2 18:00 5.6 18.6 12.1 19:00 5.2 11.8 6.1 20:00 6.1 11.6 5.1 21:00 6.9 11.8 4.4 22:00 8.1 13.0 4.5 23:00 8.3 13.2 4.5 Average 6.6 14.6 7.4 Max 8.9 26.4 19.2 Max Hour 11:00 17:00 17:00 Min 4.9 11.3 3.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.77% Date Printed: 6/30/2026 01:30 Daily Summary Report Site: Union Cross 6/29/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .009 736.3 70.6 69.1 01:00 .007 736.3 70.7 69.6 02:00 .007 736.1 70.8 69.7 03:00 .007 736.3 70.5 69.7 04:00 .005 736.5 70.2 69.8 05:00 .004 737.1 70.4 70.3 06:00 .011 737.8 72.3 71.5 07:00 .020 738.4 73.3 71.1 08:00 .023 738.8 74.9 71.0 09:00 .028 738.9 76.0 70.5 10:00 .033 739.0 77.8 70.3 11:00 .036 739.1 79.9 70.5 12:00 .039 738.9 82.1 70.1 13:00 .041 738.8 83.8 70.1 14:00 .043 738.5 85.0 70.6 15:00 .041 738.2 85.6 70.8 16:00 .041 738.2 86.4 71.2 17:00 .042 738.2 86.1 70.5 18:00 .041 738.3 85.4 70.4 19:00 .035 738.6 82.9 70.4 20:00 .030 738.9 80.5 69.8 21:00 .026 739.3 78.7 69.5 22:00 .025 C 739.5 77.0 69.1 23:00 C 739.5 76.2 68.9 Average .025 738.1 77.7 70.1 Max .043 739.5 86.4 71.5 Max Hour 14:00 23:00 16:00 06:00 Min .004 736.1 70.2 68.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.18% 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