Date Printed: 10/18/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/17/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .038 B 1.2 4.0 2.7 01:00 .039 1.3 3.7 2.3 02:00 .035 1.5 4.7 3.2 03:00 .032 1.8 4.4 2.6 04:00 .030 2.0 4.9 2.9 05:00 .024 1.8 4.1 2.3 06:00 .023 1.2 2.7 1.5 07:00 .024 1.3 3.6 2.3 08:00 .023 1.0 3.1 2.0 09:00 .022 1.0 3.2 2.1 10:00 .021 .8 2.2 1.3 11:00 .021 .8 2.3 1.4 12:00 .023 1.4 2.6 1.2 13:00 .027 1.8 3.5 1.6 14:00 .029 2.2 4.6 2.3 15:00 .030 2.5 4.1 1.6 16:00 .030 B 2.5 5.2 2.6 17:00 .031 3.8 6.5 2.7 18:00 .027 5.4 8.7 3.3 19:00 .026 3.6 7.0 3.4 20:00 .026 4.1 6.9 2.8 21:00 .025 4.4 7.5 3.1 22:00 .022 C 3.6 6.8 3.1 23:00 C 3.6 6.4 2.7 Average .027 2.2 4.6 2.3 Max .039 5.4 8.7 3.4 Max Hour 01:00 18:00 18:00 19:00 Min .021 .8 2.2 1.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Oct-2026 22:50:00 23:50:00 0.068 0.07 -1.81% Date Printed: 10/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/17/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .025 .1 2.5 2.7 .2 01:00 .032 .0 1.7 1.8 .2 02:00 .035 .0 1.3 1.3 .2 03:00 .033 .0 1.1 1.2 .2 04:00 .029 .0 1.2 1.2 .2 05:00 .023 .1 2.0 2.1 .2 06:00 .018 .1 2.7 2.8 .1 07:00 .016 .5 3.7 4.3 .1 08:00 .015 1.4 5.7 7.1 .1 09:00 .019 .8 2.6 3.4 .1 10:00 .021 .3 1.0 1.4 .1 11:00 .022 .3 1.1 1.5 .2 12:00 .022 .4 1.2 1.7 .1 13:00 .025 .3 .9 1.2 .1 14:00 .028 .2 .9 1.2 .1 15:00 .029 .2 C 1.0 C 1.2 C .1 16:00 .030 C C C .1 17:00 .030 .1 C 2.2 C 2.4 C .2 18:00 .024 .0 5.5 5.5 .1 19:00 .026 .0 3.1 3.1 .1 C 20:00 .023 .0 3.9 4.0 C 21:00 .025 .0 2.5 2.5 .1 C 22:00 .022 C .0 2.7 2.8 .1 23:00 C .0 2.1 2.1 .0 Average .024 .2 2.2 2.5 .1 Max .035 1.4 5.7 7.1 .2 Max Hour 02:00 08:00 08:00 08:00 17:00 Min .015 .0 .9 1.2 .0 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 17-Oct-2026 15:46:00 16:11:00 68.8 70 -1.59% GPT-PS 17-Oct-2026 15:46:00 16:18:00 0.6 0.0 .67 GPTZ 17-Oct-2026 15:46:00 16:38:00 223.6 225 -.59% GPT-PREC 17-Oct-2026 15:46:00 17:08:00 157.1 155 1.38% NO2 GPT-PREC 17-Oct-2026 15:46:00 17:08:00 67.5 70 -3.57% NO2 Precision NO2_Diff PRECDIFF 17-Oct-2026 17:15:00 17:15:05 66.5 67.503 -1.43% NOx NOx_Auto NO-PREC 17-Oct-2026 15:46:00 16:11:00 68.8 70 -1.67% Ozone O3_Auto ZERO 17-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 17-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.28% SO2 SO2_Auto ZERO 17-Oct-2026 19:46:00 20:11:00 0 0.0 .04 SPAN 17-Oct-2026 19:46:00 20:36:00 87.1 90 -3.18% PREC 17-Oct-2026 19:46:00 21:01:00 38.5 40 -3.72% Date Printed: 10/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/17/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 1.4 6.1 4.7 01:00 1.6 4.7 3.1 02:00 1.8 4.6 2.8 03:00 1.9 5.9 4.0 04:00 2.3 6.5 4.2 05:00 2.2 6.1 3.9 06:00 1.6 3.9 2.3 07:00 1.6 5.5 3.9 08:00 2.1 5.3 3.2 09:00 1.4 3.5 2.1 10:00 .7 2.1 1.3 11:00 .9 2.4 1.5 12:00 1.9 4.2 2.3 13:00 1.8 4.6 2.7 14:00 2.3 4.7 2.4 15:00 2.3 4.0 1.7 16:00 2.2 4.8 2.6 17:00 2.0 3.7 1.7 18:00 2.9 4.9 2.1 19:00 3.2 6.2 3.1 20:00 2.9 5.0 2.3 21:00 2.6 6.1 3.7 22:00 2.8 5.4 2.8 23:00 2.8 5.6 3.0 Average 2.0 4.8 2.8 Max 3.2 6.5 4.7 Max Hour 19:00 04:00 00:00 Min .7 2.1 1.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.72% Date Printed: 10/18/2026 01:30 Daily Summary Report Site: Union Cross 10/17/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .027 734.4 62.1 53.8 01:00 .031 735.1 60.3 52.4 02:00 .033 735.6 56.5 51.8 03:00 .032 735.7 54.6 51.0 04:00 .027 736.0 54.3 51.3 05:00 .024 736.6 54.1 50.7 06:00 .021 737.7 52.7 49.0 07:00 .023 738.3 50.7 47.2 08:00 .021 738.8 50.9 47.8 09:00 .020 739.6 52.6 48.1 10:00 .020 740.4 54.4 46.6 11:00 .022 740.7 55.2 43.4 12:00 .021 741.0 55.8 43.2 13:00 .022 740.9 56.3 42.2 14:00 .026 741.0 58.1 41.4 15:00 .027 741.2 58.8 40.7 16:00 .028 741.6 58.7 39.8 17:00 .030 742.3 57.2 37.4 18:00 .027 743.1 53.8 36.2 19:00 .023 744.0 51.3 36.1 20:00 .023 744.7 49.7 35.7 21:00 .025 745.1 48.9 34.6 22:00 .025 C 745.6 47.1 34.3 23:00 C 745.6 45.7 34.7 Average .025 740.2 54.1 43.7 Max .033 745.6 62.1 53.8 Max Hour 02:00 23:00 00:00 00:00 Min .020 734.4 45.7 34.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Oct-2026 22:50:00 23:50:00 0.07 0.07 .87% 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