Date Printed: 7/28/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/27/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .008 7.6 17.6 9.9 01:00 .006 7.7 17.6 9.9 02:00 .004 8.4 20.6 12.2 03:00 .002 9.1 26.3 17.0 04:00 .001 8.9 22.2 13.2 05:00 .000 B 9.1 25.2 16.0 06:00 .001 8.3 25.1 16.8 07:00 .004 7.1 16.2 9.0 08:00 .020 8.1 14.9 6.8 09:00 .035 10.1 17.3 7.1 10:00 .042 12.8 19.7 6.8 11:00 .042 15.0 20.8 5.8 12:00 .045 15.9 21.1 5.1 13:00 .047 16.7 22.2 5.5 14:00 .050 17.3 23.3 5.9 15:00 .048 16.7 21.5 4.8 16:00 .047 17.0 22.7 5.6 17:00 .043 16.8 22.1 5.2 18:00 .035 16.4 21.4 4.9 19:00 .024 16.4 23.4 7.0 20:00 .018 17.4 25.3 7.8 21:00 .015 17.9 25.9 7.9 22:00 .008 B 18.1 27.6 9.5 23:00 C 18.4 27.1 8.7 Average .023 13.2 21.9 8.6 Max .050 18.4 27.6 17.0 Max Hour 14:00 23:00 22:00 03:00 Min .000 7.1 14.9 4.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 27-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.92% Date Printed: 7/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/27/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .019 .2 3.7 3.9 .1 01:00 .015 .2 4.0 4.2 .1 02:00 .012 .2 4.4 4.7 .1 03:00 .008 .2 5.3 5.5 .1 04:00 .006 .4 4.4 4.9 .1 05:00 .003 4.5 9.1 13.7 .2 06:00 .004 7.3 9.5 16.8 .2 07:00 .016 2.5 5.1 7.6 .2 08:00 .031 .4 2.1 2.6 .2 09:00 .039 .3 1.2 1.5 .2 10:00 .042 .2 1.1 1.4 .2 11:00 .045 .2 1.0 1.2 .2 12:00 .046 .1 1.0 1.1 .1 13:00 .048 .1 1.1 1.2 .1 14:00 .049 .1 1.2 1.4 .2 15:00 .061 .2 C 2.3 C 2.5 C .2 16:00 .058 C C C .2 17:00 .049 .2 C 2.4 C 2.7 C .2 18:00 .046 .1 3.1 3.3 .2 19:00 .043 .1 5.3 5.4 .2 C 20:00 .039 .1 6.6 6.8 C 21:00 .030 .2 11.6 11.8 .2 C 22:00 .021 C .3 12.0 12.4 .2 23:00 C .2 7.8 8.1 .3 Average .031 .7 4.5 5.4 .1 Max .061 7.3 12.0 16.8 .3 Max Hour 15:00 06:00 22:00 06:00 23:00 Min .003 .1 1.0 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 27-Jul-2026 15:46:00 16:11:00 66.2 70 -5.4% GPT-PS 27-Jul-2026 15:46:00 16:18:00 0.4 0.0 .5 GPTZ 27-Jul-2026 15:46:00 16:38:00 214 225 -4.89% GPT-PREC 27-Jul-2026 15:46:00 17:08:00 149.3 155 -3.62% NO2 GPT-PREC 27-Jul-2026 15:46:00 17:08:00 65.1 70 -6.92% NO2 Precision NO2_Diff PRECDIFF 27-Jul-2026 17:15:00 17:15:05 64.6 65.154 -.84% NOx NOx_Auto NO-PREC 27-Jul-2026 15:46:00 16:11:00 66.2 70 -5.4% Ozone O3_Auto ZERO 27-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.72% SO2 SO2_Auto ZERO 27-Jul-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 27-Jul-2026 19:46:00 20:36:00 89.9 90 -.05% PREC 27-Jul-2026 19:46:00 21:01:00 39.7 40 -.51% Date Printed: 7/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/27/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.7 19.6 10.2 01:00 8.5 18.2 9.1 02:00 8.6 19.5 10.4 03:00 8.9 21.1 11.6 04:00 9.3 20.3 10.5 05:00 9.3 22.2 12.3 06:00 8.8 21.4 12.0 07:00 9.0 20.0 10.3 08:00 8.3 15.8 6.9 09:00 11.0 18.5 6.6 10:00 12.7 19.3 5.6 11:00 16.0 22.9 5.8 12:00 16.5 23.2 5.4 13:00 17.1 24.2 5.8 14:00 17.9 24.5 5.2 15:00 18.1 24.1 4.6 16:00 18.6 24.3 4.4 17:00 18.7 25.7 5.6 18:00 18.6 25.8 5.9 19:00 19.6 26.5 5.7 20:00 19.7 27.1 6.3 21:00 20.9 29.8 7.8 22:00 22.0 32.1 8.9 23:00 22.7 33.1 9.3 Average 14.5 23.3 7.7 Max 22.7 33.1 12.3 Max Hour 23:00 23:00 05:00 Min 8.3 15.8 4.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.51% Date Printed: 7/28/2026 01:30 Daily Summary Report Site: Union Cross 7/27/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .012 733.7 73.3 72.1 01:00 .009 733.4 72.7 72.1 02:00 .010 732.9 72.3 72.0 03:00 .005 732.7 71.6 71.6 04:00 .004 732.7 71.1 71.1 05:00 .005 733.0 70.3 70.3 06:00 .004 733.3 70.9 70.9 07:00 .010 733.5 73.2 71.5 08:00 .025 733.7 77.4 69.3 09:00 .039 733.6 79.8 67.7 10:00 .041 733.5 80.7 67.4 11:00 .045 733.9 81.5 67.4 12:00 .051 734.0 82.8 67.7 13:00 .056 733.4 83.6 67.4 14:00 .062 732.8 84.5 66.9 15:00 .062 732.3 85.1 66.8 16:00 .063 732.4 85.5 67.6 17:00 .059 732.5 84.8 68.3 18:00 .050 732.3 83.3 68.4 19:00 .039 732.3 80.7 67.8 20:00 .029 732.4 78.2 66.8 21:00 .023 732.5 76.2 67.1 22:00 .020 C 732.5 75.2 68.1 23:00 C 732.5 75.4 67.9 Average .031 732.9 77.9 68.9 Max .063 734.0 85.5 72.1 Max Hour 16:00 12:00 16:00 01:00 Min .004 732.3 70.3 66.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Jul-2026 22:50:00 23:50:00 0.07 0.07 .22% 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