Date Printed: 7/30/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/29/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .021 10.7 23.5 12.8 01:00 .022 10.5 22.1 11.5 02:00 .015 11.0 25.0 13.9 03:00 .012 11.4 26.7 15.2 04:00 .011 11.8 26.0 14.2 05:00 .006 12.0 27.3 15.3 06:00 .009 11.8 23.9 12.1 07:00 .024 11.4 20.6 9.2 08:00 .037 B 12.1 19.1 6.9 09:00 .047 13.0 19.4 6.3 10:00 .047 13.3 19.7 6.3 11:00 .048 14.4 20.8 6.3 12:00 .048 15.9 20.7 4.7 13:00 .047 15.2 20.1 4.8 14:00 .045 13.3 18.0 4.6 15:00 .042 12.2 17.2 4.9 16:00 .040 10.3 15.2 4.8 17:00 .041 10.1 16.0 5.8 18:00 .037 10.0 16.0 6.0 19:00 .034 9.8 14.8 4.9 20:00 .029 9.4 15.6 6.1 21:00 .030 9.0 15.7 6.6 22:00 .029 C 9.7 16.4 6.7 23:00 C 10.8 19.2 8.3 Average .031 11.6 19.9 8.2 Max .048 15.9 27.3 15.3 Max Hour 12:00 12:00 05:00 05:00 Min .006 9.0 14.8 4.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 29-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.6% Date Printed: 7/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/29/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .2 3.5 3.7 .2 01:00 .029 .1 3.9 4.1 .2 02:00 .025 .2 3.5 3.7 .2 03:00 .022 .2 3.8 4.1 .2 04:00 .019 .2 4.8 5.0 .1 05:00 .013 .5 10.0 10.5 .2 06:00 .009 3.3 10.5 13.8 .2 07:00 .026 1.5 6.3 7.8 .2 08:00 .044 .5 2.8 3.4 .2 09:00 .051 .6 1.9 2.5 D 10:00 .049 .2 2.0 2.3 D 11:00 .050 .2 2.0 2.2 .2 D 12:00 .050 .3 1.9 2.3 .2 13:00 .049 .2 1.8 2.1 .2 14:00 .047 .3 2.4 2.8 .2 15:00 .046 .3 2.3 2.7 .2 16:00 .043 .3 2.3 2.6 .2 17:00 .042 .2 C 2.5 C 2.7 C .2 18:00 .037 C C C .2 19:00 .035 .1 C 2.8 C 2.9 C .1 C 20:00 .033 .1 4.8 4.9 C 21:00 .032 .1 4.5 4.6 .2 C 22:00 .032 C .1 4.6 4.7 .1 23:00 C .1 5.9 6.1 .1 Average .035 .4 3.9 4.4 .1 Max .051 3.3 10.5 13.8 .2 Max Hour 09:00 06:00 06:00 06:00 21:00 Min .009 .1 1.8 2.1 .1 Count 23 23 23 23 21 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 29-Jul-2026 17:46:00 18:11:00 65.3 70 -6.65% GPT-PS 29-Jul-2026 17:46:00 18:18:00 0.3 0.0 .37 GPTZ 29-Jul-2026 17:46:00 18:38:00 213.9 225 -4.93% GPT-PREC 29-Jul-2026 17:46:00 19:08:00 149.4 155 -3.58% NO2 GPT-PREC 29-Jul-2026 17:46:00 19:08:00 65.3 70 -6.67% NO2 Precision NO2_Diff PRECDIFF 29-Jul-2026 20:15:00 20:15:05 64.4 65.331 -1.33% NOx NOx_Auto NO-PREC 29-Jul-2026 17:46:00 18:11:00 65.3 70 -6.7% Ozone O3_Auto ZERO 29-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 29-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.41% SO2 SO2_Auto ZERO 29-Jul-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 29-Jul-2026 19:46:00 20:36:00 90.5 90 .6% PREC 29-Jul-2026 19:46:00 21:01:00 40 40 .05% Date Printed: 7/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/29/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.4 28.4 14.9 01:00 12.7 28.6 15.0 02:00 12.2 29.7 16.5 03:00 12.2 26.2 13.1 04:00 12.7 27.7 14.3 05:00 12.8 26.4 12.9 06:00 12.5 29.3 16.0 07:00 12.8 24.5 10.6 08:00 B B B 09:00 B B B 10:00 14.9 23.1 7.1 11:00 15.7 24.3 7.3 12:00 16.1 26.1 8.6 13:00 15.6 24.0 6.9 14:00 13.3 23.8 9.1 15:00 12.2 21.2 7.8 16:00 10.2 17.7 6.5 17:00 10.3 17.8 6.6 18:00 9.5 15.7 5.5 19:00 8.8 14.8 5.4 20:00 9.2 16.2 6.4 21:00 9.4 16.3 6.5 22:00 10.0 17.6 7.2 23:00 10.5 18.3 7.4 Average 12.0 22.6 9.6 Max 16.1 29.7 16.5 Max Hour 12:00 02:00 02:00 Min 8.8 14.8 5.4 Count 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .05% Date Printed: 7/30/2026 01:30 Daily Summary Report Site: Union Cross 7/29/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 728.8 74.8 68.3 01:00 .036 728.7 74.9 67.6 02:00 .033 728.6 73.6 67.4 03:00 .026 728.8 71.3 67.5 04:00 .024 729.1 70.1 67.3 05:00 .027 729.5 70.2 66.8 06:00 .020 729.7 71.2 67.1 07:00 .025 D 730.2 74.3 67.7 08:00 D 730.7 78.1 67.8 09:00 .055 D 730.9 79.9 66.1 10:00 .056 731.1 81.2 66.4 11:00 .054 731.0 81.7 66.5 12:00 .056 730.8 83.5 66.2 13:00 .054 730.7 84.0 66.0 14:00 .051 730.6 84.8 65.4 15:00 .048 730.6 84.5 64.3 16:00 .045 730.7 84.1 63.8 17:00 .042 730.9 82.5 63.1 18:00 .038 731.5 80.8 62.5 19:00 .035 732.2 77.6 61.2 20:00 .033 732.7 74.9 59.9 21:00 .034 733.1 73.2 58.8 22:00 .031 C 733.4 71.3 58.7 23:00 C 733.7 69.7 58.3 Average .038 730.7 77.1 64.7 Max .056 733.7 84.8 68.3 Max Hour 12:00 23:00 14:00 00:00 Min .020 728.6 69.7 58.3 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-Jul-2026 22:50:00 23:50:00 0.07 0.07 1.17% 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