Date Printed: 3/29/2026 01:30 Daily Summary Report Site: Clemmons Middle 3/28/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .037 1.2 4.8 3.5 01:00 .038 1.7 4.4 2.6 02:00 .036 2.6 4.8 2.1 03:00 .034 2.8 5.4 2.5 04:00 .036 3.1 5.8 2.7 05:00 .036 3.3 5.7 2.4 06:00 .037 3.9 6.9 3.0 07:00 .038 B 4.2 6.7 2.5 08:00 .039 5.0 8.8 3.8 09:00 .039 5.0 7.8 2.7 10:00 .040 B 5.0 7.4 2.3 11:00 .044 4.3 7.4 3.1 12:00 .045 3.9 6.7 2.8 13:00 .047 3.9 7.1 3.2 14:00 .048 3.3 6.2 2.8 15:00 .048 3.0 5.1 2.0 16:00 .048 3.2 5.8 2.6 17:00 .047 3.2 5.6 2.4 18:00 .046 3.2 6.0 2.7 19:00 .045 3.4 6.6 3.1 20:00 .043 3.7 6.8 3.1 21:00 .041 3.9 7.0 3.0 22:00 .032 C 4.2 7.3 3.0 23:00 C 4.4 7.6 3.2 Average .041 3.5 6.4 2.7 Max .048 5.0 8.8 3.8 Max Hour 16:00 10:00 08:00 08:00 Min .032 1.2 4.4 2.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Mar-2026 22:50:00 23:50:00 0.069 0.07 -.53% Date Printed: 3/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 3/28/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .033 .0 1.6 1.7 .0 01:00 .032 .0 1.3 1.4 .0 02:00 .030 .0 1.4 1.5 .0 03:00 .029 .0 1.4 1.5 .1 04:00 .027 .0 1.7 1.8 .0 05:00 .027 .1 2.6 2.7 .0 06:00 .034 .1 1.1 1.2 .0 07:00 .035 .2 1.1 1.3 .0 08:00 .035 .3 1.0 1.3 .0 09:00 .036 .3 1.0 1.3 .0 10:00 .037 .3 1.0 1.4 .0 11:00 .040 .2 .9 1.2 .0 12:00 .042 .2 .9 1.2 .0 13:00 .043 .2 .9 1.1 .0 14:00 .044 .2 .9 1.1 .0 15:00 .044 .2 C .9 C 1.2 C .0 16:00 .044 C C C .0 17:00 .044 .1 C 1.1 C 1.3 C .0 18:00 .042 .0 1.8 1.9 .0 19:00 .039 .0 3.0 3.1 .0 C 20:00 .035 .2 5.5 5.8 C 21:00 .034 .1 5.7 5.8 .0 C 22:00 .033 .1 5.7 5.9 .0 23:00 .029 .1 6.3 6.4 .0 Average .036 .1 2.1 2.3 .0 Max .044 .3 6.3 6.4 .1 Max Hour 17:00 10:00 23:00 23:00 03:00 Min .027 .0 .9 1.1 .0 Count 24 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 28-Mar-2026 15:46:00 16:11:00 66.7 70 -4.61% GPT-PS 28-Mar-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 28-Mar-2026 15:46:00 16:38:00 215.8 225 -4.05% GPT-PREC 28-Mar-2026 15:46:00 17:08:00 151.2 155 -2.42% NO2 GPT-PREC 28-Mar-2026 15:46:00 17:08:00 65.4 70 -6.54% NO2 Precision NO2_Diff PRECDIFF 28-Mar-2026 17:15:00 17:15:05 64.6 65.424 -1.22% NOx NOx_Auto NO-PREC 28-Mar-2026 15:46:00 16:11:00 66.6 70 -4.82% SO2 SO2_Auto ZERO 28-Mar-2026 19:46:00 20:11:00 -0.1 0.0 -.16 SPAN 28-Mar-2026 19:46:00 20:36:00 85.8 90 -4.64% PREC 28-Mar-2026 19:46:00 21:01:00 37.7 40 -5.51% Date Printed: 3/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 3/28/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 1.6 2.7 1.1 01:00 1.8 3.9 2.1 02:00 3.3 5.1 1.9 03:00 4.6 7.3 2.9 04:00 4.6 6.6 2.3 05:00 4.2 6.8 2.9 06:00 4.1 6.8 3.0 07:00 4.3 6.6 2.6 08:00 5.0 8.3 3.7 09:00 5.4 7.8 2.6 10:00 5.7 8.5 3.1 11:00 4.9 7.5 2.8 12:00 4.1 6.9 2.9 13:00 3.6 7.3 3.8 14:00 3.5 6.2 2.8 15:00 3.3 6.2 2.9 16:00 3.2 6.3 3.1 17:00 3.2 6.1 2.9 18:00 3.4 6.3 3.1 19:00 6.2 11.4 5.5 20:00 7.4 11.9 4.9 21:00 9.5 15.4 6.5 22:00 5.3 8.9 4.0 23:00 5.1 7.7 2.9 Average 4.4 7.4 3.1 Max 9.5 15.4 6.5 Max Hour 21:00 21:00 21:00 Min 1.6 2.7 1.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.51% Date Printed: 3/29/2026 01:30 Daily Summary Report Site: Union Cross 3/28/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 740.7 51.9 43.6 01:00 .036 741.5 49.1 36.4 02:00 .033 742.1 45.8 32.4 03:00 .032 742.9 42.8 28.4 04:00 .031 743.7 41.4 27.5 05:00 .031 744.7 40.6 27.0 06:00 .037 746.0 39.4 21.1 07:00 .038 747.1 39.3 20.2 08:00 .038 747.7 40.1 20.7 09:00 .039 748.5 41.6 21.7 10:00 .040 748.5 43.9 22.8 11:00 .043 747.9 47.4 23.8 12:00 .046 747.5 49.8 24.1 13:00 .046 747.1 51.8 25.4 14:00 .047 746.8 53.7 25.8 15:00 .048 746.6 54.9 25.9 16:00 .048 746.4 55.5 26.7 17:00 .047 746.7 54.9 26.4 18:00 .044 747.1 52.8 25.2 19:00 .040 747.5 49.5 23.3 20:00 .039 748.0 47.3 22.3 21:00 .037 748.2 45.8 21.5 22:00 .038 C 748.4 44.7 22.0 23:00 C 748.7 43.4 22.8 Average .039 746.2 46.9 25.7 Max .048 748.7 55.5 43.6 Max Hour 16:00 23:00 16:00 00:00 Min .031 740.7 39.3 20.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Mar-2026 22:50:00 23:50:00 0.069 0.07 -1.05% 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