Date Printed: 9/24/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/23/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .015 1.1 3.3 2.1 01:00 .013 .8 2.9 2.0 02:00 .012 .7 5.4 4.6 03:00 .015 .6 3.7 3.1 04:00 .015 .8 4.8 3.9 05:00 .015 .8 5.7 4.8 06:00 .015 .9 4.0 3.0 07:00 .014 .9 3.4 2.5 08:00 .018 .6 3.0 2.3 09:00 .014 .8 3.5 2.7 10:00 .014 .8 2.7 1.9 11:00 .017 .6 1.3 .7 12:00 .015 .7 1.8 1.1 13:00 .013 1.1 2.9 1.7 14:00 .013 1.1 2.8 1.6 15:00 .014 1.0 2.2 1.2 16:00 .012 .7 1.7 .9 17:00 .011 1.3 3.0 1.6 18:00 .013 1.2 2.4 1.1 19:00 .010 B 1.2 3.0 1.8 20:00 .010 1.3 3.0 1.7 21:00 .015 1.6 3.7 2.1 22:00 .016 C 2.7 6.0 3.3 23:00 C 4.7 12.7 8.0 Average .013 1.1 3.7 2.4 Max .018 4.7 12.7 8.0 Max Hour 08:00 23:00 23:00 23:00 Min .010 .6 1.3 .7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Sep-2026 22:50:00 23:20:00 -0.003 0.0 0.00 PREC 23-Sep-2026 22:50:00 23:50:00 0.067 0.07 -4.61% Date Printed: 9/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/23/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .020 .1 2.7 2.8 .1 01:00 .018 .1 3.5 3.7 .1 02:00 .016 .0 5.0 5.1 .2 03:00 .017 .1 6.0 6.1 .1 04:00 .016 .1 5.5 5.6 .1 05:00 .021 .2 3.8 4.0 .1 06:00 .018 .2 5.4 5.7 .1 07:00 .018 .5 6.4 6.9 .1 08:00 .024 .2 2.0 2.2 .1 09:00 .019 .9 6.1 7.0 .1 10:00 .018 1.2 5.6 6.9 .1 11:00 .022 .3 1.2 1.6 .1 12:00 .019 1.0 2.9 3.9 .1 13:00 .020 1.0 2.7 3.8 .1 14:00 .017 2.7 5.2 8.0 .1 15:00 .019 1.2 C 3.6 C 4.9 C .1 16:00 .019 C C C .1 17:00 .017 .6 C 6.1 C 6.8 C .1 18:00 .015 .2 4.9 5.2 .1 19:00 .013 .2 6.7 6.9 .1 C 20:00 .014 .2 5.2 5.4 C 21:00 .018 .2 2.1 2.3 .2 C 22:00 .019 C .1 1.7 1.9 .1 23:00 C .0 1.4 1.5 .1 Average .018 .4 4.1 4.7 .1 Max .024 2.7 6.7 8.0 .2 Max Hour 08:00 14:00 19:00 14:00 21:00 Min .013 .0 1.2 1.5 .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 23-Sep-2026 15:46:00 16:11:00 69.2 70 -1.13% GPT-PS 23-Sep-2026 15:46:00 16:18:00 0.3 0.0 .34 GPTZ 23-Sep-2026 15:46:00 16:38:00 224.6 225 -.16% GPT-PREC 23-Sep-2026 15:46:00 17:08:00 157.2 155 1.48% NO2 GPT-PREC 23-Sep-2026 15:46:00 17:08:00 67.9 70 -2.99% NO2 Precision NO2_Diff PRECDIFF 23-Sep-2026 17:15:00 17:15:05 67.3 67.91 -.84% NOx NOx_Auto NO-PREC 23-Sep-2026 15:46:00 16:11:00 69.1 70 -1.27% Ozone O3_Auto ZERO 23-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 23-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.66% SO2 SO2_Auto ZERO 23-Sep-2026 19:46:00 20:11:00 0 0.0 .09 SPAN 23-Sep-2026 19:46:00 20:36:00 87.8 90 -2.38% PREC 23-Sep-2026 19:46:00 21:01:00 38.7 40 -3.03% Date Printed: 9/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/23/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 .8 2.2 1.3 01:00 .6 2.2 1.6 02:00 .5 2.2 1.7 03:00 .5 2.6 2.1 04:00 .5 3.6 3.1 05:00 .5 4.2 3.6 06:00 .5 3.8 3.3 07:00 .6 2.8 2.3 08:00 .4 1.4 1.0 09:00 .8 1.9 1.1 10:00 .4 1.6 1.2 11:00 .5 1.5 .9 12:00 .6 1.0 .4 13:00 1.1 1.8 .7 14:00 .9 2.6 1.7 15:00 .9 1.5 .6 16:00 .8 1.7 .9 17:00 1.1 2.6 1.5 18:00 .9 1.6 .7 19:00 1.0 2.3 1.3 20:00 1.1 2.5 1.3 21:00 1.6 3.1 1.4 22:00 3.1 6.7 3.7 23:00 5.0 11.6 6.8 Average 1.0 2.8 1.8 Max 5.0 11.6 6.8 Max Hour 23:00 23:00 23:00 Min .4 1.0 .4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.03% Date Printed: 9/24/2026 01:30 Daily Summary Report Site: Union Cross 9/23/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .021 740.4 59.8 58.4 01:00 .019 740.1 59.6 58.0 02:00 .019 740.0 59.1 58.0 03:00 .021 740.1 58.8 57.9 04:00 .023 740.5 58.5 57.5 05:00 .022 740.9 57.9 57.3 06:00 .022 741.2 57.5 56.8 07:00 .023 741.8 57.3 56.3 08:00 .023 D 742.0 57.2 56.1 09:00 D 742.4 56.9 55.9 10:00 .021 D 742.7 57.1 56.0 11:00 .020 742.4 57.8 55.8 12:00 .020 742.1 57.9 56.0 13:00 .020 742.0 58.0 56.6 14:00 .020 741.8 58.9 56.4 15:00 .020 741.6 58.6 56.3 16:00 .019 741.8 58.0 56.7 17:00 .018 741.9 57.3 56.5 18:00 .018 742.0 56.6 56.1 19:00 .016 742.2 56.5 56.2 20:00 .017 742.6 56.2 55.8 21:00 .017 742.6 56.3 55.8 22:00 .019 C 742.5 56.7 55.8 23:00 C 742.3 57.1 55.4 Average .019 741.6 57.7 56.5 Max .023 742.7 59.8 58.4 Max Hour 08:00 10:00 00:00 00:00 Min .016 740.0 56.2 55.4 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 23-Sep-2026 22:50:00 23:50:00 0.07 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