Date Printed: 7/31/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/30/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .023 10.2 18.1 7.9 01:00 .019 10.2 18.8 8.6 02:00 .017 B 10.4 18.3 7.8 03:00 .016 9.9 16.9 7.0 04:00 .011 9.6 19.1 9.4 05:00 .006 9.6 18.8 9.2 06:00 .008 9.8 19.1 9.3 07:00 .017 9.1 15.7 6.6 08:00 .029 7.7 B 14.7 B 7.0 B 09:00 .021 B B B 10:00 .047 5.8 11.6 5.8 11:00 .039 5.4 11.2 5.7 12:00 .040 5.1 10.2 5.0 13:00 .040 4.7 10.0 5.3 14:00 .042 6.2 15.0 8.7 15:00 .042 4.7 9.2 4.5 16:00 .043 4.3 8.9 4.6 17:00 .044 4.0 9.2 5.1 18:00 .041 4.4 15.2 10.8 19:00 .033 B 4.5 10.5 5.9 20:00 .028 4.9 11.8 6.8 21:00 .023 5.7 13.2 7.5 22:00 .020 C 5.7 13.2 7.4 23:00 C 5.1 12.9 7.7 Average .028 6.8 13.9 7.1 Max .047 10.4 19.1 10.8 Max Hour 10:00 02:00 06:00 18:00 Min .006 4.0 8.9 4.5 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Jul-2026 22:50:00 23:20:00 0.017 0.0 .02 PREC 30-Jul-2026 22:50:00 23:50:00 0.022 0.0 .02 Date Printed: 7/31/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/30/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .030 .1 3.9 4.0 .1 01:00 .028 .1 5.2 5.3 .1 02:00 .029 .1 3.4 3.5 .1 03:00 .024 .1 6.4 6.6 .1 04:00 .020 .2 6.7 7.0 .1 05:00 .012 .5 9.7 10.2 .1 06:00 .011 3.5 12.4 16.0 .2 07:00 .022 2.4 8.6 11.0 .3 08:00 .032 1.6 4.3 5.9 .3 09:00 .039 .6 2.8 3.5 .4 10:00 .042 D D D .4 11:00 .042 D D D .3 12:00 .044 D D D .2 13:00 .044 D D D .2 14:00 .047 D D D .3 15:00 .049 D D D .2 16:00 .049 .3 D 1.8 D 2.2 D .2 17:00 .046 .5 C 2.9 C 3.4 C .2 18:00 .043 C C C .3 19:00 .038 .1 C 4.3 C 4.4 C .3 C 20:00 .032 .0 5.7 5.8 C 21:00 .023 .1 12.8 12.9 .2 C 22:00 .026 C .1 8.7 8.9 .1 23:00 C .1 13.1 13.2 .3 Average .033 .6 6.6 7.2 .2 Max .049 3.5 13.1 16.0 .4 Max Hour 16:00 06:00 23:00 06:00 10:00 Min .011 .0 1.8 2.2 .1 Count 23 17 17 17 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 30-Jul-2026 17:46:00 18:11:00 65.8 70 -5.97% GPT-PS 30-Jul-2026 17:46:00 18:18:00 0.4 0.0 .5 GPTZ 30-Jul-2026 17:46:00 18:38:00 213.7 225 -4.98% GPT-PREC 30-Jul-2026 17:46:00 19:08:00 149.3 155 -3.66% NO2 GPT-PREC 30-Jul-2026 17:46:00 19:08:00 65 70 -7.07% NO2 Precision NO2_Diff PRECDIFF 30-Jul-2026 20:15:00 20:15:05 64.4 65.052 -.9% NOx NOx_Auto NO-PREC 30-Jul-2026 17:46:00 18:11:00 65.9 70 -5.76% Ozone O3_Auto ZERO 30-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.22% SO2 SO2_Auto ZERO 30-Jul-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 30-Jul-2026 19:46:00 20:36:00 90.5 90 .56% PREC 30-Jul-2026 19:46:00 21:01:00 39.9 40 -.17% Date Printed: 7/31/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/30/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 11.5 19.4 7.6 01:00 11.9 22.5 10.1 02:00 10.9 18.4 7.2 03:00 11.7 22.4 10.4 04:00 10.3 19.4 8.9 05:00 10.3 19.9 9.4 06:00 10.7 24.9 13.7 07:00 10.4 21.3 10.3 08:00 10.0 21.2 10.5 09:00 7.9 23.5 14.7 10:00 6.8 21.7 13.9 11:00 5.6 15.6 9.2 12:00 5.2 11.8 6.0 13:00 5.1 12.4 6.6 14:00 5.2 16.0 10.0 15:00 5.0 18.9 12.8 16:00 4.6 11.3 6.1 17:00 4.9 14.2 8.5 18:00 5.1 12.6 7.0 19:00 6.4 16.7 9.7 20:00 5.9 13.6 7.3 21:00 6.0 13.6 7.3 22:00 5.2 11.4 6.0 23:00 5.6 15.1 9.2 Average 7.5 17.4 9.2 Max 11.9 24.9 14.7 Max Hour 01:00 06:00 09:00 Min 4.6 11.3 6.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.17% Date Printed: 7/31/2026 01:30 Daily Summary Report Site: Union Cross 7/30/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .026 733.6 68.3 58.3 01:00 .028 733.3 67.7 58.1 02:00 .028 733.1 66.8 58.1 03:00 .028 733.3 65.9 58.1 04:00 .021 733.6 64.8 58.3 05:00 .014 734.0 63.6 58.6 06:00 .010 734.4 65.7 59.9 07:00 .019 734.7 69.6 61.0 08:00 .033 735.0 73.3 60.8 09:00 .040 735.1 75.6 60.4 10:00 .043 735.2 77.5 60.3 11:00 .048 735.0 79.7 61.6 12:00 .047 734.8 81.1 61.5 13:00 .047 734.6 82.2 61.8 14:00 .048 734.4 83.1 60.8 15:00 .051 734.1 83.8 61.4 16:00 .051 734.3 84.1 60.9 17:00 .050 734.4 83.6 60.5 18:00 .044 734.5 82.4 60.2 19:00 .035 734.9 78.9 60.1 20:00 .024 735.4 74.2 59.5 21:00 .018 736.2 71.1 59.7 22:00 .024 C 736.4 71.3 58.2 23:00 C 736.5 69.1 57.4 Average .033 734.6 74.3 59.8 Max .051 736.5 84.1 61.8 Max Hour 16:00 23:00 16:00 13:00 Min .010 733.1 63.6 57.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-Jul-2026 22:50:00 23:50:00 0.07 0.07 .86% 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