Date Printed: 9/26/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/25/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .024 4.8 11.9 7.1 01:00 .019 5.0 12.8 7.8 02:00 .017 5.0 14.2 9.2 03:00 .018 5.0 14.3 9.2 04:00 .015 4.8 14.7 9.8 05:00 .009 4.8 13.9 9.0 06:00 .008 B 4.9 12.3 7.3 07:00 .013 4.5 11.5 6.9 08:00 .023 3.7 8.8 5.1 09:00 .030 3.2 7.5 4.3 10:00 .036 3.0 8.0 5.0 11:00 .041 B 2.5 7.0 4.4 12:00 .044 2.1 6.0 3.8 13:00 .045 1.9 5.4 3.5 14:00 .046 2.0 5.6 3.6 15:00 .048 2.0 6.4 4.3 16:00 .048 1.7 6.3 4.5 17:00 .043 1.8 5.2 3.4 18:00 .028 2.3 6.1 3.7 19:00 .025 4.5 9.6 5.1 20:00 .022 3.3 7.9 4.5 21:00 .019 3.1 7.4 4.2 22:00 .020 C 3.4 7.2 3.8 23:00 B 3.3 7.0 3.6 Average .027 3.4 9.0 5.5 Max .048 5.0 14.7 9.8 Max Hour 16:00 03:00 04:00 04:00 Min .008 1.7 5.2 3.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Sep-2026 22:50:00 23:20:00 -0.003 0.0 0.00 PREC 25-Sep-2026 22:50:00 23:50:00 0.067 0.07 -3.81% Date Printed: 9/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/25/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .0 1.6 1.6 .1 01:00 .024 .0 1.7 1.7 .1 02:00 .019 .0 4.6 4.7 .1 03:00 .023 .0 3.9 3.9 .1 04:00 .015 .0 9.8 9.9 .1 05:00 .004 3.8 16.5 20.4 .1 06:00 .005 6.1 17.7 23.9 .2 07:00 .016 3.9 11.0 14.9 .2 08:00 .033 .9 3.1 4.1 .2 09:00 .038 .2 1.4 1.7 .3 10:00 .041 .1 1.1 1.2 .2 11:00 .043 .2 1.2 1.5 .2 12:00 .045 .2 1.2 1.4 .3 13:00 .048 .1 1.2 1.4 .3 14:00 .049 .1 1.3 1.5 .3 15:00 .051 .1 C 1.5 C 1.7 C .3 16:00 .051 C C C .3 17:00 .046 .1 C 2.9 C 3.0 C .3 18:00 .042 .0 3.4 3.5 .2 19:00 .037 .1 6.8 6.9 .3 C 20:00 .030 .1 10.3 10.4 C 21:00 .028 .0 9.6 9.7 .3 C 22:00 .024 C .0 7.6 7.7 .2 23:00 C .3 9.2 9.5 .1 Average .032 .7 5.5 6.3 .2 Max .051 6.1 17.7 23.9 .3 Max Hour 16:00 06:00 06:00 06:00 21:00 Min .004 .0 1.1 1.2 .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 25-Sep-2026 15:46:00 16:11:00 69.3 70 -.94% GPT-PS 25-Sep-2026 15:46:00 16:18:00 0.5 0.0 .57 GPTZ 25-Sep-2026 15:46:00 16:38:00 224.6 225 -.17% GPT-PREC 25-Sep-2026 15:46:00 17:08:00 157.2 155 1.44% NO2 GPT-PREC 25-Sep-2026 15:46:00 17:08:00 68.4 70 -2.28% NO2 Precision NO2_Diff PRECDIFF 25-Sep-2026 17:15:00 17:15:05 67.3 68.401 -1.48% NOx NOx_Auto NO-PREC 25-Sep-2026 15:46:00 16:11:00 69.3 70 -.92% Ozone O3_Auto ZERO 25-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 25-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.69% SO2 SO2_Auto ZERO 25-Sep-2026 19:46:00 20:11:00 0 0.0 .07 SPAN 25-Sep-2026 19:46:00 20:36:00 87.9 90 -2.24% PREC 25-Sep-2026 19:46:00 21:01:00 38.7 40 -3.19% Date Printed: 9/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/25/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.8 9.8 5.2 01:00 4.9 10.5 5.9 02:00 4.3 9.0 4.9 03:00 4.2 8.6 4.6 04:00 4.1 8.0 4.0 05:00 4.7 9.6 5.2 06:00 4.8 11.5 7.0 07:00 4.1 10.9 6.9 08:00 3.0 8.3 5.2 09:00 2.6 7.4 4.8 10:00 2.3 6.5 4.1 11:00 2.0 4.8 2.7 12:00 1.9 4.9 2.9 13:00 1.7 4.5 2.7 14:00 1.7 4.6 2.8 15:00 1.7 3.6 1.8 16:00 1.6 4.0 2.3 17:00 1.7 5.0 3.1 18:00 1.9 5.3 3.4 19:00 3.2 6.8 3.5 20:00 3.6 7.6 4.0 21:00 3.1 6.6 3.5 22:00 3.3 6.3 3.1 23:00 3.9 7.9 4.1 Average 3.1 7.1 4.0 Max 4.9 11.5 7.0 Max Hour 01:00 06:00 06:00 Min 1.6 3.6 1.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.19% Date Printed: 9/26/2026 01:30 Daily Summary Report Site: Union Cross 9/25/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .019 740.7 50.8 47.2 01:00 .021 740.3 50.7 46.7 02:00 .016 739.7 50.1 46.3 03:00 .024 739.4 49.9 45.8 04:00 .017 739.6 48.5 46.0 05:00 .014 739.5 47.7 45.7 06:00 .016 739.4 48.1 45.0 07:00 .019 739.5 51.1 44.6 08:00 .028 739.5 56.1 43.1 09:00 .032 739.5 58.6 42.2 10:00 .037 739.2 61.4 42.5 11:00 .033 738.8 64.5 42.7 12:00 .038 738.3 66.8 43.6 13:00 .048 737.6 68.9 44.0 14:00 .047 737.0 70.8 44.9 15:00 .050 736.6 72.2 45.9 16:00 .051 736.5 71.9 44.8 17:00 .045 736.5 70.6 45.0 18:00 .038 736.4 66.5 43.5 19:00 .027 736.6 61.7 42.7 20:00 .025 737.0 59.4 41.2 21:00 .023 737.3 57.8 40.9 22:00 .017 C 737.4 54.6 40.6 23:00 C 737.4 52.6 40.3 Average .029 738.3 58.8 43.9 Max .051 740.7 72.2 47.2 Max Hour 16:00 00:00 15:00 00:00 Min .014 736.4 47.7 40.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Sep-2026 22:50:00 23:50:00 0.069 0.07 -.48% 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