Date Printed: 10/10/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/9/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .020 6.8 15.2 8.4 01:00 .013 7.3 14.8 7.4 02:00 .010 7.1 14.3 7.1 03:00 .008 6.8 13.6 6.8 04:00 .008 6.6 13.8 7.2 05:00 .008 6.6 14.4 7.8 06:00 .008 6.2 15.3 9.0 07:00 .008 5.9 14.3 8.3 08:00 .015 5.7 14.8 9.1 09:00 .027 4.8 17.4 12.5 10:00 .043 4.1 19.9 15.7 11:00 .049 3.7 17.6 13.9 12:00 .051 B 3.8 19.6 15.8 13:00 .052 4.0 23.2 19.2 14:00 .054 B 4.1 26.3 22.2 15:00 .054 3.9 24.5 20.5 16:00 .049 4.0 24.9 20.8 17:00 .040 5.0 41.5 36.4 18:00 .033 5.0 31.7 26.7 19:00 .028 5.7 26.3 20.4 20:00 .034 5.2 23.6 18.3 21:00 .029 5.4 22.2 16.7 22:00 .035 C 5.4 22.3 17.0 23:00 C 5.4 19.5 14.1 Average .029 5.3 20.4 15.0 Max .054 7.3 41.5 36.4 Max Hour 15:00 01:00 17:00 17:00 Min .008 3.7 13.6 6.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Oct-2026 22:50:00 23:50:00 0.069 0.07 -1.26% Date Printed: 10/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/9/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .037 .0 3.7 3.7 .2 01:00 .038 .2 3.4 3.6 .2 02:00 .041 .0 3.1 3.1 .3 03:00 .037 .0 3.4 3.4 .2 04:00 .036 .0 3.4 3.4 .2 05:00 .030 .0 6.2 6.3 .2 06:00 .022 .2 7.7 7.9 .2 07:00 .026 .8 8.8 9.6 .2 08:00 .033 1.3 6.2 7.6 .3 09:00 .041 2.7 5.1 7.8 .4 10:00 .044 .4 2.4 2.8 .4 11:00 .045 .3 2.3 2.6 .4 12:00 .049 .2 2.0 2.3 .4 13:00 .052 .1 2.0 2.2 .4 14:00 .053 .1 2.2 2.3 .4 15:00 .053 .1 C 2.5 C 2.6 C .4 16:00 .047 C C C .4 17:00 .044 .0 C 5.6 C 5.7 C .3 18:00 .041 .1 6.8 7.0 .3 19:00 .041 .2 6.4 6.6 .3 C 20:00 .043 .1 4.9 5.0 C 21:00 .041 .0 4.4 4.4 .3 C 22:00 .041 C .0 4.0 4.1 .3 23:00 C .0 3.3 3.4 .3 Average .040 .2 4.3 4.6 .3 Max .053 2.7 8.8 9.6 .4 Max Hour 15:00 09:00 07:00 07:00 16:00 Min .022 .0 2.0 2.2 .2 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 09-Oct-2026 15:46:00 16:11:00 68.9 70 -1.5% GPT-PS 09-Oct-2026 15:46:00 16:18:00 0.5 0.0 .57 GPTZ 09-Oct-2026 15:46:00 16:38:00 224.2 225 -.35% GPT-PREC 09-Oct-2026 15:46:00 17:08:00 157 155 1.31% NO2 GPT-PREC 09-Oct-2026 15:46:00 17:08:00 67.5 70 -3.45% NO2 Precision NO2_Diff PRECDIFF 09-Oct-2026 17:15:00 17:15:05 67.1 67.582 -.57% NOx NOx_Auto NO-PREC 09-Oct-2026 15:46:00 16:11:00 69 70 -1.37% Ozone O3_Auto ZERO 09-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.44% SO2 SO2_Auto ZERO 09-Oct-2026 19:46:00 20:11:00 0 0.0 .04 SPAN 09-Oct-2026 19:46:00 20:36:00 87.2 90 -3% PREC 09-Oct-2026 19:46:00 21:01:00 38.5 40 -3.55% Date Printed: 10/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/9/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.2 14.1 7.9 01:00 5.5 15.3 9.7 02:00 4.7 13.4 8.7 03:00 4.2 13.3 9.1 04:00 4.6 13.1 8.6 05:00 5.0 14.2 9.3 06:00 5.0 12.9 8.0 07:00 4.9 15.1 10.3 08:00 5.1 27.4 22.2 09:00 4.0 18.6 14.4 10:00 4.2 21.5 17.0 11:00 4.3 23.0 18.2 12:00 4.3 24.9 20.1 13:00 4.0 22.2 17.7 14:00 4.0 31.6 26.8 15:00 4.0 27.6 23.0 16:00 4.3 27.5 22.7 17:00 4.4 25.9 21.2 18:00 4.9 28.9 23.7 19:00 5.8 25.7 19.7 20:00 5.3 25.2 19.7 21:00 6.0 25.1 19.0 22:00 5.4 21.8 16.4 23:00 5.7 24.2 18.5 Average 4.8 21.3 16.3 Max 6.2 31.6 26.8 Max Hour 00:00 14:00 14:00 Min 4.0 12.9 7.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.55% Date Printed: 10/10/2026 01:30 Daily Summary Report Site: Union Cross 10/9/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .044 738.9 66.6 47.5 01:00 .043 739.1 65.1 46.6 02:00 .040 738.9 62.7 46.0 03:00 .035 739.2 58.6 45.4 04:00 .024 739.6 57.9 46.6 05:00 .016 739.9 57.4 47.3 06:00 .011 740.4 57.4 47.4 07:00 .015 741.2 58.5 47.0 08:00 .027 741.6 61.4 48.4 09:00 .038 741.6 67.2 49.9 10:00 .043 741.6 70.4 50.0 11:00 .047 741.4 72.3 50.6 12:00 .052 741.4 73.5 49.9 13:00 .051 740.9 74.4 50.8 14:00 .053 740.5 74.8 50.3 15:00 .049 740.8 74.3 50.3 16:00 .044 741.0 72.5 50.4 17:00 .041 741.2 70.3 50.1 18:00 .030 741.3 67.7 49.9 19:00 .027 741.2 67.2 49.9 20:00 .037 741.7 67.1 49.5 21:00 .036 742.0 65.8 49.5 22:00 .039 C 742.1 65.5 49.1 23:00 C 742.6 64.6 49.1 Average .036 740.8 66.3 48.8 Max .053 742.6 74.8 50.8 Max Hour 14:00 23:00 14:00 13:00 Min .011 738.9 57.4 45.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.68% 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