Date Printed: 7/11/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/10/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .025 6.1 11.0 4.9 01:00 .018 B 6.2 11.6 5.3 02:00 .015 6.6 11.0 4.3 03:00 .011 6.7 11.4 4.6 04:00 .007 7.1 13.4 6.3 05:00 .004 7.8 18.4 10.5 06:00 .010 8.9 27.3 18.4 07:00 .023 8.0 14.1 6.0 08:00 .037 7.9 13.7 5.7 09:00 .044 7.8 12.8 5.0 10:00 .049 7.7 13.9 6.2 11:00 .051 7.6 13.3 5.6 12:00 .047 7.7 15.9 8.2 13:00 .047 7.2 13.8 6.6 14:00 .043 5.9 12.1 6.2 15:00 .044 5.1 11.3 6.2 16:00 .039 5.9 15.8 9.9 17:00 .038 5.6 19.1 13.5 18:00 .037 B 5.5 23.1 17.5 19:00 .035 5.3 14.1 8.7 20:00 .028 6.0 15.4 9.4 21:00 .022 6.2 14.4 8.2 22:00 .022 C 4.5 12.3 7.7 23:00 C 4.2 14.2 9.9 Average .030 6.5 14.7 8.1 Max .051 8.9 27.3 18.4 Max Hour 11:00 06:00 06:00 06:00 Min .004 4.2 11.0 4.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 10-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 10-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.97% Date Printed: 7/11/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/10/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .022 .3 10.4 10.7 .1 01:00 .028 .2 7.7 8.0 .1 02:00 .022 .3 7.3 7.6 .1 03:00 .019 .3 8.2 8.5 .1 04:00 .011 .6 10.1 10.7 .1 05:00 .013 .9 11.6 12.5 .1 06:00 .018 1.8 9.4 11.2 .3 07:00 .028 1.6 7.1 8.8 .2 08:00 .041 1.1 5.5 6.6 .2 09:00 .048 .6 3.2 3.9 .2 10:00 .050 .4 2.7 3.1 .2 11:00 .051 .3 2.4 2.7 .1 12:00 .050 .3 2.2 2.6 .1 13:00 .047 .4 3.1 3.5 .1 14:00 .043 .7 3.5 4.3 .1 15:00 .043 .5 C 2.5 C 3.1 C .1 16:00 .044 C C C .1 17:00 .043 .3 C 3.7 C 4.0 C .1 18:00 .041 .2 4.2 4.4 .1 19:00 .042 .1 4.6 4.7 .2 C 20:00 .044 .1 3.4 3.6 C 21:00 .032 .2 4.8 5.1 .1 C 22:00 .029 C .4 5.0 5.4 .1 23:00 C .3 4.0 4.4 .1 Average .035 .5 5.5 6.0 .1 Max .051 1.8 11.6 12.5 .3 Max Hour 11:00 06:00 05:00 05:00 06:00 Min .011 .1 2.2 2.6 .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 10-Jul-2026 15:46:00 16:11:00 66.2 70 -5.41% GPT-PS 10-Jul-2026 15:46:00 16:18:00 0.5 0.0 .5 GPTZ 10-Jul-2026 15:46:00 16:38:00 214.1 225 -4.82% GPT-PREC 10-Jul-2026 15:46:00 17:08:00 149.5 155 -3.54% NO2 GPT-PREC 10-Jul-2026 15:46:00 17:08:00 65.4 70 -6.46% NO2 Precision NO2_Diff PRECDIFF 10-Jul-2026 17:15:00 17:15:05 64.6 65.479 -1.26% NOx NOx_Auto NO-PREC 10-Jul-2026 15:46:00 16:11:00 66.6 70 -4.82% Ozone O3_Auto ZERO 10-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 10-Jul-2026 22:50:00 23:50:00 0.068 0.07 -3.02% SO2 SO2_Auto ZERO 10-Jul-2026 19:46:00 20:11:00 0 0.0 -.01 SPAN 10-Jul-2026 19:46:00 20:36:00 90.5 90 .63% PREC 10-Jul-2026 19:46:00 21:01:00 39.9 40 -.03% Date Printed: 7/11/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/10/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.2 15.6 6.8 01:00 7.0 12.6 5.2 02:00 6.8 13.7 6.5 03:00 7.2 12.4 4.9 04:00 7.3 13.6 5.9 05:00 8.2 13.4 4.8 06:00 9.5 16.2 6.2 07:00 10.4 17.6 6.4 08:00 9.6 19.4 8.9 09:00 9.2 19.4 9.1 10:00 9.0 18.3 8.2 11:00 8.8 17.6 7.7 12:00 8.5 17.4 7.8 13:00 8.7 19.1 9.3 14:00 7.2 16.0 7.9 15:00 5.8 12.9 6.3 16:00 6.2 13.1 6.1 17:00 7.5 23.0 14.5 18:00 7.3 24.5 16.3 19:00 6.0 19.3 12.5 20:00 4.2 18.0 13.2 21:00 4.7 19.2 14.0 22:00 5.6 13.0 7.0 23:00 4.6 9.9 5.0 Average 7.3 16.4 8.3 Max 10.4 24.5 16.3 Max Hour 07:00 18:00 18:00 Min 4.2 9.9 4.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.03% Date Printed: 7/11/2026 01:30 Daily Summary Report Site: Union Cross 7/10/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .024 735.3 75.3 66.7 01:00 .017 735.3 74.6 67.1 02:00 .016 735.2 74.3 67.0 03:00 .021 735.2 73.3 67.0 04:00 .017 735.1 72.0 67.1 05:00 .018 735.6 71.9 67.7 06:00 .018 736.0 73.2 68.9 07:00 .025 736.3 76.5 69.5 08:00 .040 736.3 81.2 69.9 09:00 .048 736.1 84.7 70.7 10:00 .048 736.3 86.1 71.0 11:00 .051 736.1 88.0 71.4 12:00 .053 735.7 89.0 71.6 13:00 .051 735.3 88.9 71.2 14:00 .045 735.2 81.9 71.7 15:00 .046 735.3 86.0 71.6 16:00 .045 735.4 80.5 70.0 17:00 .042 735.2 78.6 69.7 18:00 .041 735.1 77.9 68.6 19:00 .037 735.6 76.2 68.5 20:00 .032 736.1 75.3 69.6 21:00 .023 736.2 73.1 71.4 22:00 .023 C 736.2 72.5 71.6 23:00 C 736.2 71.9 70.6 Average .033 735.6 78.4 69.5 Max .053 736.3 89.0 71.7 Max Hour 12:00 10:00 12:00 14:00 Min .016 735.1 71.9 66.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 10-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 10-Jul-2026 22:50:00 23:50:00 0.07 0.07 .82% 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