Date Printed: 9/29/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/28/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 5.3 12.7 7.4 01:00 .013 5.2 11.8 6.6 02:00 .009 B 5.1 12.1 6.9 03:00 .007 5.0 12.6 7.6 04:00 .008 5.1 11.6 6.4 05:00 .005 5.5 18.5 12.8 06:00 .001 5.6 18.4 12.7 07:00 .007 5.5 20.8 15.3 08:00 .020 5.1 13.0 7.9 09:00 .031 4.5 10.6 6.0 10:00 .035 4.4 11.3 6.8 11:00 .038 4.3 10.1 5.8 12:00 .040 3.8 10.4 6.5 13:00 .040 3.6 11.9 8.3 14:00 .042 B 3.5 9.2 5.6 15:00 .042 3.8 12.9 9.1 16:00 .035 4.1 14.4 10.3 17:00 .032 3.8 10.0 6.2 18:00 .024 4.1 11.9 7.7 19:00 .022 B 4.2 10.6 6.4 20:00 .020 4.6 17.1 12.4 21:00 .017 4.6 9.6 5.0 22:00 .015 C 4.8 13.2 8.3 23:00 C 5.0 12.0 7.0 Average .022 4.6 12.7 8.1 Max .042 5.6 20.8 15.3 Max Hour 15:00 06:00 07:00 07:00 Min .001 3.5 9.2 5.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Sep-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 28-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.31% Date Printed: 9/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/28/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .026 .0 4.9 4.9 .2 01:00 .023 .0 4.8 4.9 .2 02:00 .020 .0 5.1 5.2 .2 03:00 .019 .0 5.4 5.5 .2 04:00 .020 .1 4.5 4.6 .2 05:00 .017 .6 8.3 8.9 .2 06:00 .013 .9 11.3 12.3 .2 07:00 .018 2.0 8.7 10.8 .3 08:00 .026 1.6 5.9 7.6 .3 09:00 .033 .7 2.8 3.6 .3 10:00 .039 .5 2.2 2.7 .3 11:00 .042 .4 2.0 2.4 .3 12:00 .042 .2 1.6 1.8 .3 13:00 .045 .2 1.5 1.8 .3 14:00 .045 .2 1.6 1.8 .3 15:00 .043 .1 C 1.8 C 1.9 C .3 16:00 .038 C C C .3 17:00 .037 .1 C 1.9 C 2.1 C .2 18:00 .032 .1 3.4 3.5 .2 19:00 .029 .1 4.3 4.5 .3 C 20:00 .027 .0 5.1 5.2 C 21:00 .020 .2 6.9 7.1 .3 C 22:00 .020 C .1 6.3 6.5 .2 23:00 C .2 8.0 8.2 .2 Average .029 .3 4.7 5.1 .2 Max .045 2.0 11.3 12.3 .3 Max Hour 14:00 07:00 06:00 06:00 21:00 Min .013 .0 1.5 1.8 .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 28-Sep-2026 15:46:00 16:11:00 69.1 70 -1.17% GPT-PS 28-Sep-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 28-Sep-2026 15:46:00 16:38:00 224.8 225 -.05% GPT-PREC 28-Sep-2026 15:46:00 17:08:00 157.5 155 1.62% NO2 GPT-PREC 28-Sep-2026 15:46:00 17:08:00 68 70 -2.74% NO2 Precision NO2_Diff PRECDIFF 28-Sep-2026 17:15:00 17:15:05 67.3 68.085 -1.03% NOx NOx_Auto NO-PREC 28-Sep-2026 15:46:00 16:11:00 69.3 70 -.99% Ozone O3_Auto ZERO 28-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Sep-2026 22:50:00 23:50:00 0.067 0.07 -3.69% SO2 SO2_Auto ZERO 28-Sep-2026 19:46:00 20:11:00 0.1 0.0 .14 SPAN 28-Sep-2026 19:46:00 20:36:00 88 90 -2.13% PREC 28-Sep-2026 19:46:00 21:01:00 38.9 40 -2.59% Date Printed: 9/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/28/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.3 7.7 3.3 01:00 4.2 7.8 3.5 02:00 4.3 8.4 4.1 03:00 4.3 7.3 3.0 04:00 4.2 8.2 3.9 05:00 4.9 8.1 3.2 06:00 5.8 14.2 8.5 07:00 4.6 10.1 5.4 08:00 4.7 11.2 6.2 09:00 4.4 11.2 6.4 10:00 4.7 13.7 8.6 11:00 4.7 12.7 7.6 12:00 4.0 10.3 5.9 13:00 3.9 11.3 7.0 14:00 3.5 11.1 7.1 15:00 3.5 9.1 5.2 16:00 3.4 9.0 5.3 17:00 3.4 8.2 4.5 18:00 4.1 9.2 4.9 19:00 5.9 10.1 4.0 20:00 5.0 8.6 3.5 21:00 5.6 10.2 4.4 22:00 6.6 12.1 5.4 23:00 6.0 10.9 4.9 Average 4.5 10.0 5.2 Max 6.6 14.2 8.6 Max Hour 22:00 06:00 10:00 Min 3.4 7.3 3.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.59% Date Printed: 9/29/2026 01:30 Daily Summary Report Site: Union Cross 9/28/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .024 733.6 58.1 47.8 01:00 .019 733.5 56.2 47.9 02:00 .014 733.5 54.8 48.4 03:00 .011 733.5 53.8 48.7 04:00 .010 733.7 53.2 48.8 05:00 .009 734.1 53.8 48.7 06:00 .010 734.4 53.6 48.8 07:00 .010 734.7 57.5 49.9 08:00 .020 735.1 63.5 51.8 09:00 .033 735.3 67.9 51.8 10:00 .039 735.1 70.1 52.3 11:00 .044 734.9 71.7 53.2 12:00 .046 734.5 73.5 54.9 13:00 .045 734.1 74.9 55.5 14:00 .048 733.8 75.5 56.5 15:00 .045 733.7 76.0 57.5 16:00 .038 733.9 74.5 57.8 17:00 .035 734.4 72.6 57.4 18:00 .028 734.8 70.4 56.9 19:00 .027 735.3 68.3 56.4 20:00 .023 735.9 66.5 55.9 21:00 .022 736.3 65.5 55.4 22:00 .021 C 736.5 63.2 55.1 23:00 C 736.5 60.7 55.5 Average .027 734.6 64.8 53.0 Max .048 736.5 76.0 57.8 Max Hour 14:00 23:00 15:00 16:00 Min .009 733.5 53.2 47.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Sep-2026 22:50:00 23:50:00 0.07 0.07 .97% 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