Date Printed: 7/15/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/14/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .018 6.9 16.4 9.5 01:00 .018 6.7 17.5 10.7 02:00 .018 6.7 16.6 9.9 03:00 .017 6.6 18.1 11.4 04:00 .013 6.5 17.5 10.9 05:00 .009 6.9 19.3 12.4 06:00 .012 7.9 19.1 11.1 07:00 .015 7.7 17.4 9.6 08:00 .023 7.5 16.4 8.9 09:00 .032 B 7.2 15.2 7.9 10:00 .038 7.1 13.1 6.0 11:00 .041 B 7.3 13.1 5.8 12:00 .045 7.9 14.1 6.2 13:00 .048 8.2 14.1 5.8 14:00 .052 8.5 14.1 5.5 15:00 .054 9.1 14.8 5.7 16:00 .055 9.6 15.9 6.2 17:00 .058 9.9 15.8 5.8 18:00 .056 10.0 15.7 5.6 19:00 .039 9.1 14.8 5.6 20:00 .024 9.5 15.9 6.4 21:00 .021 10.1 17.3 7.1 22:00 .020 C 10.3 18.3 7.9 23:00 C 10.3 18.1 7.7 Average .031 8.2 16.1 7.9 Max .058 10.3 19.3 12.4 Max Hour 17:00 23:00 05:00 05:00 Min .009 6.5 13.1 5.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 14-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.58% Date Printed: 7/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/14/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .022 .4 2.6 3.1 .2 01:00 .024 .3 2.4 2.8 .1 02:00 .022 .4 2.9 3.3 .1 03:00 .015 .3 3.1 3.5 .1 04:00 .015 .3 3.6 3.9 .1 05:00 .013 .7 5.0 5.7 .1 06:00 .016 1.1 4.1 5.2 .2 07:00 .018 2.2 4.4 6.7 .4 08:00 .027 .6 2.0 2.7 .1 09:00 .030 .7 1.9 2.7 .1 10:00 .035 .3 1.1 1.5 .1 11:00 .041 .3 1.1 1.4 .1 12:00 .045 .2 1.1 1.4 .1 13:00 .048 .3 1.4 1.7 .1 14:00 .051 .2 1.3 1.5 .1 15:00 .054 .2 C 1.5 C 1.8 C .1 16:00 .059 C C C .3 17:00 .055 .2 C 2.5 C 2.7 C .2 18:00 .045 .7 10.5 11.2 .5 19:00 .035 .4 17.3 17.7 .6 C 20:00 .039 .1 10.7 10.8 C 21:00 .034 .1 9.9 10.1 .2 C 22:00 .019 C .4 13.8 14.2 .2 23:00 C .3 12.1 12.4 .1 Average .033 .4 5.0 5.5 .1 Max .059 2.2 17.3 17.7 .6 Max Hour 16:00 07:00 19:00 19:00 19:00 Min .013 .1 1.1 1.4 .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 14-Jul-2026 15:46:00 16:11:00 65.8 70 -5.86% GPT-PS 14-Jul-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 14-Jul-2026 15:46:00 16:38:00 212.9 225 -5.36% GPT-PREC 14-Jul-2026 15:46:00 17:08:00 148.8 155 -3.95% NO2 GPT-PREC 14-Jul-2026 15:46:00 17:08:00 64.8 70 -7.3% NO2 Precision NO2_Diff PRECDIFF 14-Jul-2026 17:15:00 17:15:05 64 64.892 -1.27% NOx NOx_Auto NO-PREC 14-Jul-2026 15:46:00 16:11:00 65.9 70 -5.81% Ozone O3_Auto ZERO 14-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.34% SO2 SO2_Auto ZERO 14-Jul-2026 19:46:00 20:11:00 0 0.0 -.07 SPAN 14-Jul-2026 19:46:00 20:36:00 90 90 .08% PREC 14-Jul-2026 19:46:00 21:01:00 39.9 40 -.16% Date Printed: 7/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/14/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.4 19.6 11.9 01:00 7.6 20.0 12.2 02:00 7.5 19.9 12.2 03:00 7.6 25.9 18.0 04:00 7.9 23.0 14.8 05:00 8.0 21.9 13.6 06:00 8.7 22.4 13.4 07:00 8.5 20.1 11.2 08:00 8.6 17.3 8.3 09:00 8.2 18.3 9.5 10:00 8.2 17.5 8.7 11:00 8.7 16.2 6.9 12:00 9.2 16.9 7.0 13:00 9.4 16.9 6.8 14:00 9.8 18.2 7.6 15:00 10.4 16.8 5.7 16:00 11.1 19.6 7.6 17:00 10.9 20.0 8.2 18:00 10.2 18.4 7.4 19:00 10.1 18.0 7.2 20:00 10.3 17.0 6.2 21:00 11.2 19.4 7.8 22:00 12.3 20.2 7.4 23:00 12.4 23.2 10.3 Average 9.3 19.4 9.5 Max 12.4 25.9 18.0 Max Hour 23:00 03:00 03:00 Min 7.4 16.2 5.7 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.16% Date Printed: 7/15/2026 01:30 Daily Summary Report Site: Union Cross 7/14/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .023 740.6 69.8 66.6 01:00 .028 740.4 69.5 65.3 02:00 .029 740.0 68.9 65.1 03:00 .021 739.7 67.8 65.9 04:00 .014 739.7 67.2 66.5 05:00 .013 740.1 67.5 66.2 06:00 .017 740.6 69.0 66.2 07:00 .024 741.1 71.6 67.1 08:00 .028 741.2 73.7 67.5 09:00 .034 741.2 75.6 66.5 10:00 .038 741.3 77.4 65.6 11:00 .043 741.3 79.9 64.5 12:00 .046 741.1 80.1 64.2 13:00 .049 740.6 81.6 64.4 14:00 .051 740.1 83.8 65.1 15:00 .054 739.6 84.9 65.7 16:00 .057 739.0 85.7 65.7 17:00 .059 738.8 85.9 65.1 18:00 .054 738.8 84.7 65.4 19:00 .043 738.9 82.2 65.7 20:00 .037 739.3 77.8 64.5 21:00 .026 739.6 75.6 64.3 22:00 .025 C 739.7 74.6 64.1 23:00 C 739.6 71.5 64.1 Average .035 740.0 76.0 65.4 Max .059 741.3 85.9 67.5 Max Hour 17:00 11:00 17:00 08:00 Min .013 738.8 67.2 64.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Jul-2026 22:50:00 23:50:00 0.07 0.07 .53% 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