Date Printed: 7/9/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/8/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .025 5.0 10.6 5.5 01:00 .016 5.4 11.6 6.1 02:00 .011 5.8 13.8 8.0 03:00 .010 5.7 14.6 8.9 04:00 .008 5.6 14.4 8.7 05:00 .007 5.3 14.7 9.3 06:00 .010 4.9 10.7 5.8 07:00 .021 D 4.6 10.6 5.9 08:00 D 5.3 10.9 5.6 09:00 .048 D 5.5 9.9 4.3 10:00 .050 5.9 12.7 6.7 11:00 .050 6.2 12.5 6.3 12:00 .052 6.4 11.4 5.0 13:00 .053 6.6 11.3 4.7 14:00 .056 6.7 11.5 4.7 15:00 .062 B 7.4 11.8 4.3 16:00 .068 8.2 13.3 5.1 17:00 .044 4.8 11.4 6.6 18:00 .042 4.9 10.0 5.0 19:00 .036 4.9 9.9 5.0 20:00 .030 5.0 10.7 5.7 21:00 .032 5.1 10.2 5.1 22:00 .036 C 4.5 8.8 4.3 23:00 C 4.5 10.5 6.0 Average .034 5.5 11.5 5.9 Max .068 8.2 14.7 9.3 Max Hour 16:00 16:00 05:00 05:00 Min .007 4.5 8.8 4.3 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 08-Jul-2026 22:50:00 23:50:00 0.066 0.07 -4.47% Date Printed: 7/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/8/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .4 3.7 4.2 .2 01:00 .029 .5 4.0 4.5 .2 02:00 .026 .4 4.2 4.6 .2 03:00 .022 .6 4.4 5.0 .1 04:00 .017 .6 5.1 5.8 .1 05:00 .014 .9 5.7 6.6 .1 06:00 .023 .9 B 3.6 B 4.6 B .2 07:00 .029 B B B .4 08:00 .033 B B B 2.1 09:00 .035 B B B 4.1 10:00 .050 B B B 2.2 11:00 .061 .7 4.4 5.1 1.2 12:00 .069 .3 3.2 3.6 .8 13:00 .081 .3 3.8 4.1 .8 14:00 .074 .2 3.3 3.6 .5 15:00 .063 .2 C 2.6 C 2.9 C .2 16:00 .061 C C C .2 17:00 .042 .7 C 4.3 C 5.1 C .1 18:00 .037 .6 3.3 4.0 .1 19:00 .029 .6 6.3 6.9 .2 C 20:00 .023 .7 8.4 9.2 C 21:00 .025 .7 4.8 5.5 .2 C 22:00 .023 C .6 5.2 5.8 .1 23:00 C .9 5.6 6.6 .1 Average .039 .5 4.5 5.1 .6 Max .081 .9 8.4 9.2 4.1 Max Hour 13:00 23:00 20:00 20:00 09:00 Min .014 .2 2.6 2.9 .1 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 08-Jul-2026 15:46:00 16:11:00 66.4 70 -5.04% GPT-PS 08-Jul-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 08-Jul-2026 15:46:00 16:38:00 214.2 225 -4.76% GPT-PREC 08-Jul-2026 15:46:00 17:08:00 149.5 155 -3.53% NO2 GPT-PREC 08-Jul-2026 15:46:00 17:08:00 65.2 70 -6.73% NO2 Precision NO2_Diff PRECDIFF 08-Jul-2026 17:15:00 17:15:05 64.7 65.288 -.81% NOx NOx_Auto NO-PREC 08-Jul-2026 15:46:00 16:11:00 67.1 70 -4.02% Ozone O3_Auto ZERO 08-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-Jul-2026 22:50:00 23:50:00 0.067 0.069 -2.09% SO2 SO2_Auto ZERO 08-Jul-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 08-Jul-2026 19:46:00 20:36:00 90.8 90 .95% PREC 08-Jul-2026 19:46:00 21:01:00 40 40 .12% Date Printed: 7/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/8/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.4 13.5 6.7 01:00 6.8 12.4 5.3 02:00 7.2 14.6 6.9 03:00 7.5 15.3 7.4 04:00 7.5 16.1 8.2 05:00 6.8 14.3 7.2 06:00 6.0 12.9 6.5 07:00 6.4 11.5 4.7 08:00 7.2 12.9 5.2 09:00 7.7 13.3 5.0 10:00 7.9 13.3 4.7 11:00 8.9 15.2 5.4 12:00 9.4 16.1 5.8 13:00 9.6 16.9 6.4 14:00 8.9 16.6 6.7 15:00 8.2 13.2 4.2 16:00 8.2 14.6 5.4 17:00 5.9 15.2 8.6 18:00 5.7 14.4 8.2 19:00 5.9 12.5 6.1 20:00 6.5 13.6 6.5 21:00 6.5 15.5 8.5 22:00 6.2 14.4 7.7 23:00 6.4 15.6 8.7 Average 7.2 14.3 6.5 Max 9.6 16.9 8.7 Max Hour 13:00 13:00 23:00 Min 5.7 11.5 4.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .12% Date Printed: 7/9/2026 01:30 Daily Summary Report Site: Union Cross 7/8/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .031 736.2 76.0 71.5 01:00 .032 736.1 75.4 71.3 02:00 .026 736.1 74.4 71.5 03:00 .021 736.3 04:00 .016 736.4 73.2 71.6 05:00 .012 736.7 72.9 71.2 06:00 .019 737.2 74.0 71.3 07:00 .032 737.4 76.8 71.6 08:00 .044 737.5 79.8 71.8 09:00 .051 737.6 82.3 71.9 10:00 .056 737.6 84.1 72.1 11:00 .061 737.4 86.1 72.7 12:00 .068 737.0 88.6 73.2 13:00 .071 736.3 90.1 73.3 14:00 .069 736.0 91.3 73.1 15:00 .067 735.5 92.1 73.2 16:00 .074 735.2 92.1 73.9 17:00 .056 735.4 86.4 72.6 18:00 .056 735.4 80.4 72.0 19:00 .044 735.6 79.2 72.0 20:00 .033 735.7 78.9 73.5 21:00 .029 736.4 78.1 73.0 22:00 .028 C 736.3 77.0 72.2 23:00 C 735.8 75.9 72.1 Average .043 736.3 81.0 72.2 Max .074 737.6 92.1 73.9 Max Hour 16:00 10:00 16:00 16:00 Min .012 735.2 72.9 71.2 Count 23 24 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 08-Jul-2026 22:50:00 23:50:00 0.069 0.07 .15% 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