Date Printed: 5/8/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/7/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .031 2.7 7.3 4.5 01:00 .024 2.9 8.0 5.0 02:00 .026 3.2 8.2 4.9 03:00 .027 B 3.6 8.0 4.4 04:00 .022 4.0 9.6 5.5 05:00 .020 4.4 9.7 5.3 06:00 .018 5.1 10.7 5.6 07:00 .021 5.0 9.9 4.8 08:00 D 4.3 8.5 4.1 09:00 .027 D 3.7 6.9 3.1 10:00 .032 3.4 7.5 4.0 11:00 .035 3.6 9.9 6.2 12:00 .030 3.1 9.1 5.9 13:00 .029 3.0 7.7 4.7 14:00 .025 3.5 16.6 13.0 15:00 .025 3.5 8.3 4.7 16:00 .027 4.0 7.4 3.3 17:00 .026 4.0 7.4 3.3 18:00 .022 4.1 8.4 4.3 19:00 .015 4.7 10.2 5.5 20:00 .010 B 5.3 12.3 7.0 21:00 .010 5.9 13.5 7.4 22:00 .008 C 6.3 14.5 8.2 23:00 C 6.5 18.1 11.5 Average .023 4.1 9.9 5.6 Max .035 6.5 18.1 13.0 Max Hour 11:00 23:00 23:00 14:00 Min .008 2.7 6.9 3.1 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 07-May-2026 22:50:00 23:50:00 0.071 0.07 1.78% Date Printed: 5/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/7/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .029 .2 2.7 2.9 M 01:00 .025 .2 3.8 4.0 M 02:00 .026 .2 3.7 3.9 M 03:00 .024 .2 3.3 3.5 M 04:00 .020 .3 3.9 4.2 M 05:00 .019 .3 4.9 5.3 M 06:00 .016 .6 7.0 7.7 M 07:00 .020 .5 8.7 9.3 M 08:00 .019 .8 8.1 8.9 C 09:00 .024 .8 4.7 5.5 C 10:00 .030 .9 4.0 5.0 M 11:00 .026 .6 1.9 2.4 M 12:00 .024 2.8 5.3 8.1 D 13:00 .026 1.0 3.3 4.4 D 14:00 .025 .4 2.4 2.9 D 15:00 .025 1.1 C 4.5 C 5.6 C .1 D 16:00 .026 C C C .1 17:00 .023 1.2 C 5.4 C 6.7 C .1 18:00 .018 .8 7.8 8.6 .1 19:00 .012 .3 6.9 7.3 .0 C 20:00 .010 .3 5.1 5.5 C 21:00 .009 .7 9.5 10.3 .1 C 22:00 .006 C 1.0 12.3 13.3 .0 23:00 C 1.9 12.3 14.2 .0 Average .020 .7 5.7 6.5 .0 Max .030 2.8 12.3 14.2 .1 Max Hour 10:00 12:00 23:00 23:00 21:00 Min .006 .2 1.9 2.4 .0 Count 23 23 23 23 8 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 07-May-2026 15:46:00 16:11:00 67.3 70 -3.78% GPT-PS 07-May-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 07-May-2026 15:46:00 16:38:00 216.8 225 -3.63% GPT-PREC 07-May-2026 15:46:00 17:08:00 150.7 155 -2.74% NO2 GPT-PREC 07-May-2026 15:46:00 17:08:00 66.2 70 -5.33% NO2 Precision NO2_Diff PRECDIFF 07-May-2026 17:15:00 17:15:05 66 66.272 -.29% NOx NOx_Auto NO-PREC 07-May-2026 15:46:00 16:11:00 67.3 70 -3.74% Ozone O3_Auto ZERO 07-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-May-2026 22:50:00 23:50:00 0.067 0.07 -3.64% SO2 SO2_Auto ZERO 07-May-2026 08:00:00 08:25:00 1 0.0 1.05 SPAN 07-May-2026 08:00:00 08:50:00 86.4 90 -3.99% PREC 07-May-2026 08:00:00 09:15:00 38.9 40 -2.72% ZERO 07-May-2026 19:46:00 20:11:00 0 0.0 0.00 SPAN 07-May-2026 19:46:00 20:36:00 90 90 .02% PREC 07-May-2026 19:46:00 21:01:00 39.8 40 -.38% Date Printed: 5/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/7/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.0 10.4 7.2 01:00 3.0 8.4 5.2 02:00 3.5 9.0 5.3 03:00 3.6 9.3 5.6 04:00 4.3 10.6 6.2 05:00 5.4 13.1 7.5 06:00 6.7 12.6 5.6 07:00 6.4 14.2 7.5 08:00 6.4 12.3 5.7 09:00 4.7 10.4 5.6 10:00 4.2 10.1 5.6 11:00 3.4 14.0 10.4 12:00 2.8 7.3 4.3 13:00 2.9 8.4 5.4 14:00 4.3 18.9 14.5 15:00 4.8 11.8 6.9 16:00 4.3 8.3 3.9 17:00 4.3 8.2 3.8 18:00 4.7 8.7 4.0 19:00 5.4 11.7 6.3 20:00 8.2 16.9 8.7 21:00 8.8 16.8 8.2 22:00 7.8 16.8 9.2 23:00 7.5 17.5 10.3 Average 5.0 11.9 6.7 Max 8.8 18.9 14.5 Max Hour 21:00 14:00 14:00 Min 2.8 7.3 3.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.38% Date Printed: 5/8/2026 01:30 Daily Summary Report Site: Union Cross 5/7/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 733.3 62.6 62.0 01:00 .030 732.3 62.4 62.1 02:00 .027 731.8 62.4 62.3 03:00 .028 731.3 62.3 62.3 04:00 .024 731.6 62.3 62.3 05:00 .022 731.5 62.2 62.2 06:00 .022 731.8 62.3 62.3 07:00 .022 732.0 62.5 62.5 08:00 .025 731.2 62.4 62.4 09:00 .025 731.4 63.1 63.1 10:00 .030 731.4 64.5 63.3 11:00 .028 731.0 63.4 59.0 12:00 .028 731.2 61.6 56.3 13:00 .027 731.1 60.3 55.8 14:00 .028 731.1 57.3 53.8 15:00 .028 731.3 56.3 54.1 16:00 .028 731.3 56.9 53.2 17:00 .026 731.7 56.7 53.0 18:00 .026 732.3 56.6 52.4 19:00 .019 732.6 55.8 53.0 20:00 .010 733.0 53.7 52.4 21:00 .010 733.8 52.6 51.8 22:00 .006 C 734.2 51.2 50.5 23:00 C 734.4 50.6 50.3 Average .024 732.0 59.2 57.6 Max .033 734.4 64.5 63.3 Max Hour 00:00 23:00 10:00 10:00 Min .006 731.0 50.6 50.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-May-2026 22:50:00 23:50:00 0.069 0.07 -.5% 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