Date Printed: 10/5/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/4/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 D 1.5 2.8 1.2 01:00 D 1.2 2.5 1.3 02:00 D .8 1.5 .7 03:00 D .7 2.1 1.3 04:00 D .5 1.6 1.1 05:00 D .5 1.3 .7 06:00 D .6 1.4 .7 07:00 D .6 1.6 1.0 08:00 D .7 1.7 .9 09:00 D 1.0 2.1 1.1 10:00 D 1.5 2.7 1.2 11:00 D 2.1 4.0 1.9 12:00 D 2.5 4.9 2.4 13:00 D 2.7 4.8 2.0 14:00 D 3.0 5.4 2.3 15:00 D 3.0 5.6 2.5 16:00 D 3.0 6.4 3.4 17:00 D 3.5 7.7 4.1 18:00 D 3.9 7.4 3.5 19:00 D 4.0 8.4 4.3 20:00 D 4.4 7.4 2.9 21:00 D 4.6 7.9 3.2 22:00 C 4.6 7.7 3.1 23:00 C 4.9 8.2 3.3 Average 2.3 4.4 2.0 Max D 4.9 8.4 4.3 Max Hour 23:00 19:00 19:00 Min D .5 1.3 .7 Count 0 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Oct-2026 22:50:00 23:50:00 0.07 0.07 1.31% Date Printed: 10/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/4/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .022 .0 1.2 1.2 .1 01:00 .020 .0 1.1 1.2 .1 02:00 .019 .1 1.1 1.3 .1 03:00 .019 .0 1.0 1.1 .1 04:00 .022 .0 .8 .9 .1 05:00 .020 .0 .8 .8 .1 06:00 .019 .0 .9 1.0 .1 07:00 .018 .2 1.1 1.3 .1 08:00 .018 .4 1.6 2.1 .1 09:00 .018 .5 1.8 2.4 .1 10:00 .017 1.4 2.2 3.6 .2 11:00 .019 .5 1.4 2.0 .2 12:00 .019 1.0 1.5 2.5 .2 13:00 .023 .3 1.0 1.3 .2 14:00 .023 .3 1.1 1.4 .2 15:00 .023 .2 C 1.1 C 1.3 C .2 16:00 .022 C C C .2 17:00 .018 .2 C 2.1 C 2.4 C .2 18:00 .016 .4 3.7 4.1 .2 19:00 .012 .3 4.4 4.7 .2 C 20:00 .010 .5 4.4 4.9 C 21:00 .008 .2 5.0 5.2 .2 C 22:00 .007 C .4 5.6 6.0 .2 23:00 C 1.5 7.3 8.9 .2 Average .017 .3 2.2 2.6 .1 Max .023 1.5 7.3 8.9 .2 Max Hour 15:00 23:00 23:00 23:00 23:00 Min .007 .0 .8 .8 .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 04-Oct-2026 15:46:00 16:11:00 69.1 70 -1.21% GPT-PS 04-Oct-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 04-Oct-2026 15:46:00 16:38:00 224.2 225 -.31% GPT-PREC 04-Oct-2026 15:46:00 17:08:00 156.6 155 1.08% NO2 GPT-PREC 04-Oct-2026 15:46:00 17:08:00 68.1 70 -2.64% NO2 Precision NO2_Diff PRECDIFF 04-Oct-2026 17:15:00 17:15:05 67.6 68.15 -.77% NOx NOx_Auto NO-PREC 04-Oct-2026 15:46:00 16:11:00 69 70 -1.34% Ozone O3_Auto ZERO 04-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 04-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.38% SO2 SO2_Auto ZERO 04-Oct-2026 19:46:00 20:11:00 0.1 0.0 .15 SPAN 04-Oct-2026 19:46:00 20:36:00 87.3 90 -2.96% PREC 04-Oct-2026 19:46:00 21:01:00 38.6 40 -3.45% Date Printed: 10/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/4/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 1.2 1.8 .6 01:00 .7 1.3 .5 02:00 .6 1.3 .7 03:00 .8 1.1 .3 04:00 .7 1.3 .6 05:00 .4 1.5 1.0 06:00 .5 1.5 .9 07:00 .7 1.9 1.2 08:00 1.6 2.6 1.0 09:00 1.5 3.5 1.9 10:00 2.3 4.1 1.8 11:00 2.6 4.9 2.2 12:00 3.1 5.4 2.3 13:00 2.9 5.7 2.7 14:00 2.9 5.2 2.1 15:00 3.1 6.3 3.1 16:00 3.6 6.5 2.7 17:00 3.7 6.4 2.6 18:00 4.4 7.9 3.4 19:00 4.5 7.8 3.2 20:00 4.9 7.8 2.9 21:00 4.9 7.8 2.8 22:00 5.5 10.3 4.8 23:00 7.1 11.0 3.8 Average 2.6 4.7 2.0 Max 7.1 11.0 4.8 Max Hour 23:00 23:00 22:00 Min .4 1.1 .3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.45% Date Printed: 10/5/2026 01:30 Daily Summary Report Site: Union Cross 10/4/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .021 740.3 55.8 54.5 01:00 .019 740.0 55.4 55.0 02:00 .018 739.7 55.3 55.3 03:00 .017 739.5 55.2 55.2 04:00 .020 739.5 55.2 55.2 05:00 .019 739.6 55.7 55.8 06:00 .018 739.8 07:00 .018 740.1 56.3 56.3 08:00 .018 740.1 57.2 57.1 09:00 .018 740.3 58.1 57.7 10:00 .018 740.0 59.3 58.0 11:00 .019 739.7 60.9 58.2 12:00 .019 739.2 62.7 58.9 13:00 .021 738.7 64.0 59.3 14:00 .022 738.3 65.2 59.5 15:00 .022 738.2 65.6 60.0 16:00 .021 738.0 66.0 60.3 17:00 .017 738.1 65.4 60.7 18:00 .013 738.2 64.0 60.8 19:00 .010 738.5 63.1 60.8 20:00 .010 738.9 63.1 60.9 21:00 .009 738.9 62.6 60.8 22:00 .006 C 738.8 61.6 60.5 23:00 C 738.6 61.3 61.0 Average .017 739.2 60.3 58.3 Max .022 740.3 66.0 61.0 Max Hour 15:00 09:00 16:00 23:00 Min .006 738.0 55.2 54.5 Count 23 24 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Oct-2026 22:50:00 23:50:00 0.07 0.07 .72% 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