Date Printed: 8/3/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/2/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .023 13.0 23.2 10.1 01:00 .018 13.4 26.3 12.9 02:00 .023 12.0 21.6 9.6 03:00 .027 B 10.2 19.8 9.5 04:00 .029 8.1 18.7 10.6 05:00 .029 7.8 17.9 10.1 06:00 .026 7.5 15.6 8.0 07:00 .025 7.6 13.9 6.3 08:00 .026 6.8 12.1 5.3 09:00 .027 5.6 9.5 3.9 10:00 .027 6.9 11.2 4.3 11:00 .028 9.0 14.1 5.1 12:00 .027 10.3 16.7 6.3 13:00 .028 10.3 18.4 8.0 14:00 .029 11.6 19.7 8.0 15:00 .025 B 10.9 18.8 7.9 16:00 .020 9.0 19.3 10.2 17:00 .030 7.6 34.1 26.5 18:00 .024 7.7 38.5 30.8 19:00 .020 7.0 41.5 34.3 20:00 .015 6.7 37.5 30.7 21:00 .009 7.8 39.8 32.0 22:00 .004 C 8.3 35.9 27.5 23:00 C 8.1 30.1 22.0 Average .023 8.8 23.0 14.1 Max .030 13.4 41.5 34.3 Max Hour 17:00 01:00 19:00 19:00 Min .004 5.6 9.5 3.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 02-Aug-2026 22:50:00 23:50:00 0.067 0.07 -4.06% Date Printed: 8/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/2/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .025 .3 2.4 2.7 .1 01:00 .022 .2 3.0 3.3 .1 02:00 .023 .2 2.7 2.9 .1 03:00 .029 .2 1.7 2.0 .1 04:00 .036 .1 1.6 1.8 .1 05:00 .036 .2 2.0 2.2 .2 06:00 .032 .2 1.5 1.7 .1 07:00 .030 .2 2.0 2.3 .1 08:00 .028 .3 2.5 2.9 .2 09:00 .031 .3 2.0 2.4 .2 10:00 .032 .4 2.4 2.8 .2 11:00 .034 .4 2.0 2.4 .2 12:00 .033 .4 2.4 2.8 .3 13:00 .032 .4 2.4 2.9 .3 14:00 .033 .4 2.4 2.9 .3 15:00 .029 .3 2.1 2.5 .2 16:00 .025 .3 2.6 2.9 .2 17:00 .030 .3 C 1.8 C 2.1 C .2 18:00 .028 C C C .2 19:00 .024 .4 C 3.4 C 3.8 C .2 C 20:00 .019 .2 5.4 5.6 C 21:00 .018 .2 3.6 3.8 .2 C 22:00 .016 C .2 3.8 4.0 .1 23:00 C .2 3.8 4.0 .2 Average .028 .2 2.5 2.9 .1 Max .036 .4 5.4 5.6 .3 Max Hour 05:00 19:00 20:00 20:00 14:00 Min .016 .1 1.5 1.7 .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 02-Aug-2026 17:46:00 18:11:00 66 70 -5.62% GPT-PS 02-Aug-2026 17:46:00 18:18:00 0.7 0.0 .71 GPTZ 02-Aug-2026 17:46:00 18:38:00 214.3 225 -4.73% GPT-PREC 02-Aug-2026 17:46:00 19:08:00 149.3 155 -3.67% NO2 GPT-PREC 02-Aug-2026 17:46:00 19:08:00 65.4 70 -6.46% NO2 Precision NO2_Diff PRECDIFF 02-Aug-2026 20:15:00 20:15:05 65 65.477 -.67% NOx NOx_Auto NO-PREC 02-Aug-2026 17:46:00 18:11:00 66.1 70 -5.56% Ozone O3_Auto ZERO 02-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Aug-2026 22:50:00 23:50:00 0.068 0.07 -1.45% SO2 SO2_Auto ZERO 02-Aug-2026 19:46:00 20:11:00 0.1 0.0 .15 SPAN 02-Aug-2026 19:46:00 20:36:00 90.7 90 .83% PREC 02-Aug-2026 19:46:00 21:01:00 39.9 40 -.08% Date Printed: 8/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/2/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 16.8 29.4 11.7 01:00 17.7 30.3 11.7 02:00 17.4 29.0 10.7 03:00 14.5 22.9 7.7 04:00 9.7 21.1 10.8 05:00 7.9 26.6 18.0 06:00 8.3 21.7 12.8 07:00 8.8 16.4 7.1 08:00 8.4 14.3 5.4 09:00 6.8 11.4 4.2 10:00 6.8 12.5 5.2 11:00 8.2 14.4 5.6 12:00 9.4 16.2 6.1 13:00 10.6 20.0 8.5 14:00 10.6 19.7 8.2 15:00 10.2 19.8 8.7 16:00 10.7 21.8 10.2 17:00 7.7 29.8 21.1 18:00 7.3 46.1 37.3 19:00 6.2 41.6 34.2 20:00 6.8 43.0 34.9 21:00 7.8 37.2 28.3 22:00 7.3 33.1 24.9 23:00 7.0 30.3 22.4 Average 9.7 25.3 14.8 Max 17.7 46.1 37.3 Max Hour 01:00 18:00 18:00 Min 6.2 11.4 4.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.08% Date Printed: 8/3/2026 01:30 Daily Summary Report Site: Union Cross 8/2/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .031 732.4 74.3 72.0 01:00 .028 732.3 73.8 72.2 02:00 .027 731.8 73.8 72.4 03:00 .030 732.0 73.6 72.0 04:00 .041 732.0 70.9 69.7 05:00 .031 731.9 70.6 70.2 06:00 .025 732.1 71.5 71.5 07:00 .026 732.2 72.1 71.7 08:00 .028 732.1 72.6 71.7 09:00 .032 732.1 74.1 71.5 10:00 .032 732.4 74.9 71.6 11:00 .032 732.2 75.8 71.9 12:00 .033 731.7 78.0 72.1 13:00 .032 731.3 79.2 72.2 14:00 .031 730.9 80.6 73.1 15:00 .030 730.8 80.3 73.3 16:00 .026 730.7 78.6 74.1 17:00 .034 730.6 75.7 70.0 18:00 .034 730.6 73.4 68.3 19:00 .028 730.8 72.0 68.0 20:00 .026 731.0 71.5 69.2 21:00 .023 731.3 71.1 70.4 22:00 .016 C 731.3 70.8 70.6 23:00 C 731.3 70.6 70.4 Average .029 731.5 74.1 71.2 Max .041 732.4 80.6 74.1 Max Hour 04:00 10:00 14:00 16:00 Min .016 730.6 70.6 68.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Aug-2026 22:50:00 23:50:00 0.07 0.07 .62% 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