Date Printed: 7/29/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/28/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 19.0 30.5 11.4 01:00 .004 19.4 31.4 12.0 02:00 .005 19.3 30.2 10.8 03:00 .003 19.4 30.8 11.3 04:00 .003 19.6 31.0 11.3 05:00 .004 19.9 32.0 12.1 06:00 .006 19.6 30.4 10.8 07:00 .010 18.7 29.8 11.1 08:00 .016 17.2 26.0 8.7 09:00 .027 16.7 24.8 8.1 10:00 .024 15.3 23.6 8.3 11:00 .028 14.6 22.9 8.3 12:00 .019 14.2 23.7 9.5 13:00 .037 13.5 24.3 10.8 14:00 .045 14.1 22.0 7.8 15:00 .046 B 14.1 22.5 8.3 16:00 .049 15.0 22.1 7.1 17:00 .042 15.2 24.6 9.4 18:00 .038 13.7 24.1 10.4 19:00 .038 11.6 21.8 10.2 20:00 .042 9.6 18.4 8.8 21:00 .036 9.3 18.4 9.1 22:00 .030 C 9.4 19.9 10.5 23:00 C 9.8 21.1 11.3 Average .024 15.3 25.2 9.8 Max .049 19.9 32.0 12.1 Max Hour 16:00 05:00 05:00 05:00 Min .003 9.3 18.4 7.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 28-Jul-2026 22:50:00 23:50:00 0.066 0.07 -4.48% Date Printed: 7/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/28/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .2 7.8 8.1 .2 01:00 .023 .2 6.8 7.1 .2 02:00 .022 .3 4.2 4.5 .2 03:00 .019 .2 5.1 5.4 .2 04:00 .014 .3 6.6 6.9 .2 05:00 .009 .6 11.1 11.7 .2 06:00 .015 1.0 7.6 8.6 .2 07:00 .020 1.1 6.2 7.3 .3 08:00 .025 .7 5.2 6.0 .3 09:00 .029 .5 4.7 5.3 .3 10:00 .028 .8 5.7 6.6 .2 11:00 .039 .6 4.0 4.6 .2 12:00 .031 .5 4.8 5.3 .2 13:00 .047 .7 4.0 4.7 D 14:00 .051 .3 3.0 3.3 D 15:00 .046 .2 C 3.0 C 3.3 C D 16:00 .047 C C C .3 17:00 .048 .3 C 4.0 C 4.3 C .4 18:00 .040 .2 2.3 2.5 .2 19:00 .038 .1 2.3 2.5 .2 C 20:00 .038 .2 2.7 3.0 C 21:00 .036 .1 2.6 2.8 .2 C 22:00 .033 C .2 2.2 2.4 .2 23:00 C .2 3.4 3.7 .2 Average .031 .4 4.7 5.2 .2 Max .051 1.1 11.1 11.7 .4 Max Hour 14:00 07:00 05:00 05:00 17:00 Min .009 .1 2.2 2.4 .2 Count 23 23 23 23 20 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 28-Jul-2026 15:46:00 16:11:00 66.4 70 -5.12% GPT-PS 28-Jul-2026 15:46:00 16:18:00 0.6 0.0 .61 GPTZ 28-Jul-2026 15:46:00 16:38:00 214.5 225 -4.65% GPT-PREC 28-Jul-2026 15:46:00 17:08:00 149.3 155 -3.62% NO2 GPT-PREC 28-Jul-2026 15:46:00 17:08:00 65.7 70 -6.07% NO2 Precision NO2_Diff PRECDIFF 28-Jul-2026 17:15:00 17:15:05 65.1 65.752 -.94% NOx NOx_Auto NO-PREC 28-Jul-2026 15:46:00 16:11:00 66.8 70 -4.53% Ozone O3_Auto ZERO 28-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.91% SO2 SO2_Auto ZERO 28-Jul-2026 19:46:00 20:11:00 0.1 0.0 .11 SPAN 28-Jul-2026 19:46:00 20:36:00 90.2 90 .25% PREC 28-Jul-2026 19:46:00 21:01:00 39.9 40 -.19% Date Printed: 7/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/28/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 23.1 34.3 10.1 01:00 23.0 35.1 11.0 02:00 22.0 33.3 10.2 03:00 21.5 31.2 8.7 04:00 22.5 33.8 10.3 05:00 23.4 36.3 11.7 06:00 21.7 35.2 12.3 07:00 20.5 33.4 11.6 08:00 19.7 31.0 10.1 09:00 19.0 30.6 10.3 10:00 17.7 27.3 8.5 11:00 16.7 26.2 8.3 12:00 16.2 28.8 11.5 13:00 15.5 25.8 9.0 14:00 15.7 26.0 8.7 15:00 16.1 26.5 8.8 16:00 17.0 28.8 10.1 17:00 17.8 30.6 11.1 18:00 15.1 27.3 10.9 19:00 12.4 25.7 12.2 20:00 10.9 23.6 11.7 21:00 10.3 21.7 10.6 22:00 10.0 20.3 9.5 23:00 11.6 28.0 15.4 Average 17.4 29.2 10.5 Max 23.4 36.3 15.4 Max Hour 05:00 05:00 23:00 Min 10.0 20.3 8.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.19% Date Printed: 7/29/2026 01:30 Daily Summary Report Site: Union Cross 7/28/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .023 732.3 73.8 68.2 01:00 .013 732.2 72.4 69.0 02:00 .014 731.8 72.2 69.3 03:00 .010 731.3 72.9 69.2 04:00 .012 730.8 72.3 69.0 05:00 .013 730.4 71.2 68.9 06:00 .014 730.9 72.1 69.0 07:00 .019 731.0 74.2 69.7 08:00 .026 731.2 76.1 70.4 09:00 .031 731.2 77.2 71.2 10:00 .031 731.4 77.3 72.8 11:00 .043 731.0 80.0 74.0 12:00 .038 730.6 78.3 74.6 13:00 .046 728.9 79.2 76.3 14:00 .053 728.8 83.9 75.9 15:00 .053 728.5 85.2 76.1 16:00 .047 727.7 85.0 76.3 17:00 .044 727.7 84.3 75.6 18:00 .044 727.8 82.4 72.2 19:00 .040 728.0 79.3 71.0 20:00 .042 728.4 76.9 69.4 21:00 .042 728.6 75.3 68.9 22:00 .037 C 728.7 73.9 68.8 23:00 C 728.7 73.6 68.8 Average .031 729.9 77.0 71.4 Max .053 732.3 85.2 76.3 Max Hour 15:00 00:00 15:00 16:00 Min .010 727.7 71.2 68.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Jul-2026 22:50:00 23:50:00 0.069 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