Date Printed: 7/12/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/11/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 4.1 12.5 8.4 01:00 .018 3.9 14.1 10.2 02:00 .016 4.0 16.0 12.0 03:00 .012 4.1 13.7 9.6 04:00 .008 4.2 14.4 10.2 05:00 .005 4.2 13.4 9.1 06:00 .006 4.0 12.9 8.9 07:00 .015 4.0 9.9 5.9 08:00 .029 B 4.0 9.6 5.5 09:00 .039 4.3 9.5 5.1 10:00 .046 4.4 9.2 4.7 11:00 .042 5.1 15.8 10.7 12:00 .039 B 3.8 10.3 6.5 13:00 .044 3.2 7.0 3.7 14:00 .045 2.9 6.1 3.1 15:00 .043 3.2 7.2 3.9 16:00 .041 3.4 8.4 5.0 17:00 .041 3.2 7.9 4.6 18:00 .039 3.4 8.3 4.8 19:00 .036 3.8 9.1 5.3 20:00 .031 3.9 8.7 4.8 21:00 .028 3.6 8.4 4.8 22:00 .024 C 3.8 9.0 5.2 23:00 C 3.7 8.7 4.9 Average .028 3.8 10.4 6.5 Max .046 5.1 16.0 12.0 Max Hour 10:00 11:00 02:00 02:00 Min .005 2.9 6.1 3.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 11-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 11-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.81% Date Printed: 7/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/11/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .3 3.7 4.1 .1 01:00 .030 .4 3.7 4.1 .1 02:00 .026 .4 4.1 4.5 .0 03:00 .021 .4 4.4 4.9 .0 04:00 .016 .6 5.8 6.4 .1 05:00 .013 1.0 6.5 7.6 .0 06:00 .019 1.2 4.7 5.9 .1 07:00 .032 .8 3.3 4.1 .1 08:00 .035 .8 3.0 3.8 .1 09:00 .043 .5 1.9 2.5 .1 10:00 .048 .4 1.7 2.2 .1 11:00 .047 .3 1.7 2.1 .1 12:00 .045 .3 2.0 2.4 .1 13:00 .046 .3 1.6 2.0 .1 14:00 .047 .3 1.6 1.9 .1 15:00 .046 .3 C 1.8 C 2.1 C .1 16:00 .042 C C C .1 17:00 .041 .2 C 1.9 C 2.1 C .1 18:00 .040 .2 2.6 2.9 .1 19:00 .036 .2 4.1 4.4 .1 C 20:00 .031 .2 5.2 5.4 C 21:00 .029 .2 4.4 4.7 .1 C 22:00 .028 C .2 3.6 3.9 .1 23:00 C .2 3.1 3.3 .1 Average .034 .4 3.3 3.7 .0 Max .048 1.2 6.5 7.6 .1 Max Hour 10:00 06:00 05:00 05:00 23:00 Min .013 .2 1.6 1.9 .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 11-Jul-2026 15:46:00 16:11:00 66.2 70 -5.35% GPT-PS 11-Jul-2026 15:46:00 16:18:00 0.5 0.0 .55 GPTZ 11-Jul-2026 15:46:00 16:38:00 214 225 -4.86% GPT-PREC 11-Jul-2026 15:46:00 17:08:00 149.1 155 -3.77% NO2 GPT-PREC 11-Jul-2026 15:46:00 17:08:00 65.2 70 -6.84% NO2 Precision NO2_Diff PRECDIFF 11-Jul-2026 17:15:00 17:15:05 64.9 65.209 -.46% NOx NOx_Auto NO-PREC 11-Jul-2026 15:46:00 16:11:00 66.4 70 -5.09% Ozone O3_Auto ZERO 11-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 11-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.44% SO2 SO2_Auto ZERO 11-Jul-2026 19:46:00 20:11:00 0 0.0 .01 SPAN 11-Jul-2026 19:46:00 20:36:00 90.5 90 .65% PREC 11-Jul-2026 19:46:00 21:01:00 39.8 40 -.28% Date Printed: 7/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/11/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.4 13.6 8.7 01:00 4.1 11.2 6.8 02:00 4.1 13.4 8.9 03:00 4.4 13.8 9.1 04:00 4.9 14.8 9.6 05:00 5.2 15.0 9.4 06:00 5.1 15.4 9.8 07:00 4.7 12.1 6.9 08:00 4.8 11.7 6.3 09:00 4.7 11.4 6.1 10:00 4.8 10.9 5.5 11:00 5.7 13.8 7.3 12:00 4.3 14.2 9.1 13:00 3.8 12.9 8.3 14:00 3.3 9.4 5.5 15:00 3.7 9.5 5.2 16:00 4.0 10.6 5.9 17:00 4.4 10.2 5.3 18:00 4.7 11.4 6.1 19:00 5.0 12.0 6.4 20:00 5.1 12.9 7.3 21:00 4.8 11.2 6.0 22:00 4.6 10.0 5.1 23:00 4.3 9.9 5.3 Average 4.5 12.1 7.0 Max 5.7 15.4 9.8 Max Hour 11:00 06:00 06:00 Min 3.3 9.4 5.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.28% Date Printed: 7/12/2026 01:30 Daily Summary Report Site: Union Cross 7/11/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .025 736.1 71.4 69.5 01:00 .023 735.9 70.9 69.5 02:00 .020 735.6 70.3 69.4 03:00 .016 735.5 69.8 69.2 04:00 .014 735.8 69.4 69.1 05:00 .011 736.3 69.3 69.1 06:00 .013 736.7 71.3 69.8 07:00 .029 736.9 77.0 68.9 08:00 .037 737.1 79.7 68.9 09:00 .042 737.5 81.4 69.0 10:00 .051 737.2 85.1 69.0 11:00 .048 737.2 85.9 70.3 12:00 .045 736.8 81.7 70.9 13:00 .048 735.9 85.7 69.6 14:00 .049 736.1 87.0 69.1 15:00 .047 735.8 85.9 69.6 16:00 .045 735.7 85.1 70.9 17:00 .041 735.5 82.6 70.8 18:00 .029 735.5 80.6 72.3 19:00 .021 735.6 80.8 72.3 20:00 .026 736.0 79.6 71.1 21:00 .026 736.5 78.1 70.4 22:00 .026 C 736.5 76.9 70.4 23:00 C 736.7 75.9 69.4 Average .031 736.2 78.3 69.9 Max .051 737.5 87.0 72.3 Max Hour 10:00 09:00 14:00 19:00 Min .011 735.5 69.3 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 11-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 11-Jul-2026 22:50:00 23:50:00 0.07 0.07 .21% 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