Date Printed: 7/24/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/23/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .028 4.1 9.0 4.9 01:00 .026 3.1 6.6 3.5 02:00 .030 2.8 5.6 2.8 03:00 .030 3.3 6.7 3.3 04:00 .026 2.6 4.6 2.0 05:00 .022 2.4 4.9 2.5 06:00 .019 1.5 3.3 1.8 07:00 .021 2.9 5.7 2.7 08:00 .026 6.8 11.7 4.8 09:00 .021 7.8 22.3 14.5 10:00 .023 8.7 21.7 13.0 11:00 .026 8.7 16.9 8.2 12:00 .026 9.7 18.0 8.3 13:00 .026 10.8 18.4 7.6 14:00 .026 10.7 18.5 7.8 15:00 .028 7.8 13.3 5.4 16:00 .030 B 8.2 13.7 5.4 17:00 .031 7.9 13.5 5.6 18:00 .028 7.9 14.1 6.2 19:00 .026 7.4 14.1 6.6 20:00 .021 7.3 14.8 7.5 21:00 .015 7.8 16.5 8.6 22:00 .012 C 7.8 17.9 10.1 23:00 C 7.0 15.5 8.5 Average .024 6.4 12.8 6.3 Max .031 10.8 22.3 14.5 Max Hour 17:00 13:00 09:00 09:00 Min .012 1.5 3.3 1.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 23-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.56% Date Printed: 7/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/23/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .027 .1 3.1 3.2 .1 01:00 .024 .1 2.4 2.5 .1 02:00 .023 .1 2.1 2.2 .1 03:00 .025 .1 1.9 2.0 .1 04:00 .030 .0 1.7 1.8 .1 05:00 .022 .1 4.5 4.6 .1 06:00 .019 .3 4.2 4.5 .1 07:00 .024 .4 4.0 4.4 .1 08:00 .028 .4 2.7 3.1 .0 09:00 .025 .5 3.7 4.2 .1 10:00 .028 .5 2.5 3.0 .1 11:00 .027 .8 3.5 4.4 .1 12:00 .029 .3 2.0 2.4 .1 13:00 .030 .3 1.9 2.3 .1 14:00 .031 .3 2.0 2.3 .1 15:00 .031 .3 C 2.3 C 2.7 C .1 16:00 .032 C C C .2 17:00 .033 .4 C 3.0 C 3.4 C .4 18:00 .032 .1 2.0 2.2 .2 19:00 .030 .1 2.3 2.5 .1 C 20:00 .026 .2 2.9 3.1 C 21:00 .025 .2 2.8 3.1 .1 C 22:00 .029 C .1 1.9 2.1 .1 23:00 C .1 1.7 1.9 .1 Average .027 .2 2.6 2.9 .1 Max .033 .8 4.5 4.6 .4 Max Hour 17:00 11:00 05:00 05:00 17:00 Min .019 .0 1.7 1.8 .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 23-Jul-2026 15:46:00 16:11:00 65.7 70 -6% GPT-PS 23-Jul-2026 15:46:00 16:18:00 0.5 0.0 .55 GPTZ 23-Jul-2026 15:46:00 16:38:00 213.1 225 -5.26% GPT-PREC 23-Jul-2026 15:46:00 17:08:00 149 155 -3.86% NO2 GPT-PREC 23-Jul-2026 15:46:00 17:08:00 64.3 70 -8.05% NO2 Precision NO2_Diff PRECDIFF 23-Jul-2026 17:15:00 17:15:05 64.1 64.362 -.32% NOx NOx_Auto NO-PREC 23-Jul-2026 15:46:00 16:11:00 65.8 70 -5.91% Ozone O3_Auto ZERO 23-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 23-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.06% SO2 SO2_Auto ZERO 23-Jul-2026 19:46:00 20:11:00 0 0.0 -.03 SPAN 23-Jul-2026 19:46:00 20:36:00 89.9 90 -.06% PREC 23-Jul-2026 19:46:00 21:01:00 39.6 40 -.85% Date Printed: 7/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/23/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.0 18.2 10.8 01:00 6.2 21.2 14.4 02:00 4.6 14.8 9.8 03:00 3.4 11.4 7.7 04:00 2.9 9.4 6.2 05:00 2.9 8.6 5.5 06:00 4.3 9.8 5.2 07:00 7.4 13.8 6.0 08:00 9.0 14.9 5.5 09:00 8.5 32.6 23.7 10:00 8.6 20.4 11.6 11:00 8.9 19.5 10.3 12:00 10.4 P 19.4 P 8.8 P 13:00 11.0 20.5 9.2 14:00 9.4 16.4 6.8 15:00 7.7 13.8 5.9 16:00 8.0 13.5 5.2 17:00 8.1 15.0 6.7 18:00 7.4 14.3 6.6 19:00 7.1 14.0 6.7 20:00 7.2 13.9 6.5 21:00 7.1 13.8 6.5 22:00 6.8 14.6 7.6 23:00 6.9 17.1 10.0 Average 7.1 15.8 8.4 Max 11.0 32.6 23.7 Max Hour 13:00 09:00 09:00 Min 2.9 8.6 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.85% Date Printed: 7/24/2026 01:30 Daily Summary Report Site: Union Cross 7/23/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 735.8 72.2 72.2 01:00 .033 735.8 72.4 72.4 02:00 .032 735.9 72.1 72.1 03:00 .033 736.2 71.6 71.6 04:00 .031 736.5 71.6 71.6 05:00 .030 737.0 71.6 71.6 06:00 .024 737.6 71.9 71.9 07:00 .027 737.9 71.6 71.6 08:00 .030 738.4 71.6 71.2 09:00 .025 738.6 68.1 67.3 10:00 .027 739.2 66.8 65.1 11:00 .029 739.0 67.4 63.7 12:00 .028 739.2 67.3 63.2 13:00 .028 739.1 67.9 63.7 14:00 .028 739.4 67.3 63.9 15:00 .028 739.4 D 66.1 D 64.0 D 16:00 .029 739.2 O 67.2 O 63.3 O 17:00 .031 739.2 68.2 62.6 18:00 .032 739.4 68.7 61.7 19:00 .028 739.5 68.7 61.8 20:00 .025 739.6 68.5 62.0 21:00 .022 740.0 68.0 62.9 22:00 .022 C 740.0 67.8 62.4 23:00 C 740.0 67.6 61.5 Average .028 738.4 69.2 66.4 Max .035 740.0 72.4 72.4 Max Hour 00:00 23:00 01:00 01:00 Min .022 735.8 66.1 61.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 23-Jul-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