Date Printed: 7/26/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/25/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .024 6.2 14.8 8.5 01:00 .027 5.8 13.5 7.7 02:00 .028 B 5.5 12.5 7.0 03:00 .024 4.9 11.4 6.4 04:00 .021 4.2 13.4 9.2 05:00 .026 3.3 15.8 12.5 06:00 .029 2.7 9.8 7.1 07:00 .028 2.9 6.5 3.6 08:00 .022 B 2.8 7.0 4.1 09:00 .023 2.6 4.9 2.3 10:00 .023 1.9 3.4 1.4 11:00 .023 2.2 4.0 1.8 12:00 .022 3.0 6.3 3.3 13:00 .027 3.6 7.4 3.7 14:00 .033 3.6 6.9 3.2 15:00 .030 3.9 8.2 4.3 16:00 .037 4.2 8.2 3.9 17:00 .036 4.8 8.6 3.8 18:00 .033 4.9 9.2 4.2 19:00 .023 B 5.5 11.2 5.6 20:00 .015 6.7 14.2 7.5 21:00 .008 7.8 20.0 12.2 22:00 .010 C 8.3 19.6 11.2 23:00 C 9.2 24.3 15.1 Average .024 4.6 10.8 6.2 Max .037 9.2 24.3 15.1 Max Hour 16:00 23:00 23:00 23:00 Min .008 1.9 3.4 1.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 25-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.59% Date Printed: 7/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/25/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .1 1.5 1.7 .0 01:00 .030 .1 1.6 1.7 .0 02:00 .029 .1 1.3 1.4 .0 03:00 .028 .1 1.6 1.7 .1 04:00 .033 .0 1.8 1.9 .0 05:00 .034 .0 1.5 1.6 .1 06:00 .033 .1 1.3 1.4 .0 07:00 .030 .2 1.9 2.1 .0 08:00 .026 .5 3.5 4.0 .1 09:00 .025 .4 2.0 2.5 .0 10:00 .025 .3 1.3 1.7 .1 11:00 .025 .5 1.6 2.2 .0 12:00 .028 .3 1.2 1.6 .1 13:00 .028 .2 1.4 1.6 .0 14:00 .029 .4 2.0 2.5 .1 15:00 .033 .4 C 1.8 C 2.2 C .1 16:00 .038 C C C .1 17:00 .036 .3 C 2.2 C 2.5 C .1 18:00 .035 .2 2.4 2.6 .1 19:00 .026 .2 5.6 5.8 .1 C 20:00 .019 .2 7.8 8.0 C 21:00 .014 .2 7.3 7.5 .2 C 22:00 .016 C .1 3.5 3.7 .1 23:00 C .2 5.3 5.5 .1 Average .028 .2 2.6 2.9 .0 Max .038 .5 7.8 8.0 .2 Max Hour 16:00 11:00 20:00 20:00 21:00 Min .014 .0 1.2 1.4 .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 25-Jul-2026 15:46:00 16:11:00 65.9 70 -5.76% GPT-PS 25-Jul-2026 15:46:00 16:18:00 0.4 0.0 .45 GPTZ 25-Jul-2026 15:46:00 16:38:00 213.3 225 -5.2% GPT-PREC 25-Jul-2026 15:46:00 17:08:00 148.8 155 -3.96% NO2 GPT-PREC 25-Jul-2026 15:46:00 17:08:00 64.9 70 -7.16% NO2 Precision NO2_Diff PRECDIFF 25-Jul-2026 17:15:00 17:15:05 64.4 64.989 -.84% NOx NOx_Auto NO-PREC 25-Jul-2026 15:46:00 16:11:00 65.9 70 -5.77% Ozone O3_Auto ZERO 25-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.95% SO2 SO2_Auto ZERO 25-Jul-2026 19:46:00 20:11:00 0 0.0 .01 SPAN 25-Jul-2026 19:46:00 20:36:00 89.9 90 -.01% PREC 25-Jul-2026 19:46:00 21:01:00 39.8 40 -.45% Date Printed: 7/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/25/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.7 17.7 10.8 01:00 7.1 16.4 9.1 02:00 5.9 15.7 9.6 03:00 4.7 12.1 7.2 04:00 3.8 11.7 7.7 05:00 2.9 10.2 7.1 06:00 3.1 7.9 4.6 07:00 3.5 7.7 4.1 08:00 3.3 7.7 4.2 09:00 2.6 5.7 3.0 10:00 2.5 5.1 2.5 11:00 3.2 7.5 4.1 12:00 3.2 7.3 3.9 13:00 3.8 8.1 4.1 14:00 4.4 8.5 3.9 15:00 4.8 9.4 4.3 16:00 5.1 9.3 3.9 17:00 5.3 9.6 4.0 18:00 5.9 11.0 4.7 19:00 7.5 13.7 5.8 20:00 7.0 14.3 7.0 21:00 9.0 19.9 10.5 22:00 8.3 20.1 11.5 23:00 8.3 18.1 9.4 Average 5.0 11.4 6.1 Max 9.0 20.1 11.5 Max Hour 21:00 22:00 22:00 Min 2.5 5.1 2.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.45% Date Printed: 7/26/2026 01:30 Daily Summary Report Site: Union Cross 7/25/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .029 738.8 66.5 66.4 01:00 .032 738.5 66.2 66.2 02:00 .031 738.2 66.1 66.1 03:00 .028 738.1 66.2 66.2 04:00 .029 738.1 66.0 66.0 05:00 .030 738.3 65.8 65.8 06:00 .030 738.4 65.9 65.9 07:00 .028 738.5 66.1 66.1 08:00 .025 738.9 66.6 66.5 09:00 .025 738.5 67.0 66.7 10:00 .024 738.5 67.9 66.6 11:00 .023 738.6 68.3 66.9 12:00 .025 738.6 69.1 66.9 13:00 .026 738.2 70.0 67.1 14:00 .031 737.9 71.5 66.8 15:00 .031 737.5 71.7 66.8 16:00 .037 737.0 74.9 66.8 17:00 .035 736.7 75.4 67.2 18:00 .033 736.6 74.7 67.3 19:00 .024 736.5 72.0 67.6 20:00 .020 736.6 69.7 67.9 21:00 .015 736.7 68.7 67.8 22:00 .011 C 736.4 68.3 67.9 23:00 C 736.3 68.2 67.9 Average .027 737.7 68.8 66.8 Max .037 738.9 75.4 67.9 Max Hour 16:00 08:00 17:00 23:00 Min .011 736.3 65.8 65.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.4% 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