Date Printed: 6/6/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/5/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .022 7.9 15.4 7.5 01:00 .017 8.5 16.5 7.9 02:00 .015 9.0 15.5 6.5 03:00 .010 8.7 14.7 6.0 04:00 .005 8.6 14.3 5.7 05:00 .002 8.9 19.2 10.2 06:00 .005 13.0 76.3 63.3 07:00 .019 9.6 18.2 8.6 08:00 .032 9.3 18.5 9.1 09:00 .049 8.5 17.8 9.3 10:00 .059 8.1 18.6 10.4 11:00 .063 8.1 17.6 9.4 12:00 .063 8.3 17.4 9.1 13:00 .068 8.8 18.0 9.1 14:00 .070 8.9 17.7 8.7 15:00 .072 9.0 18.8 9.8 16:00 .074 B 9.3 19.4 10.1 17:00 .074 9.5 23.6 14.2 18:00 .069 10.8 21.4 10.5 19:00 .068 12.0 38.2 26.2 20:00 .062 12.5 30.3 17.7 21:00 .060 11.9 23.1 11.1 22:00 .054 C 13.3 23.5 10.2 23:00 C 13.1 24.1 10.9 Average .044 9.8 22.4 12.5 Max .074 13.3 76.3 63.3 Max Hour 17:00 22:00 06:00 06:00 Min .002 7.9 14.3 5.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 05-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 05-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.15% Date Printed: 6/6/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/5/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .030 .2 10.5 10.7 -.5 01:00 .023 .2 10.0 10.3 -.5 02:00 .018 .3 11.4 11.7 -.5 03:00 .011 .4 13.5 13.9 -.5 04:00 .007 .8 16.2 17.0 -.5 05:00 .005 2.7 13.8 16.5 -.5 06:00 .017 2.4 9.7 12.2 -.4 07:00 .030 1.9 7.6 9.5 -.4 08:00 .045 .7 4.1 4.8 -.4 09:00 .052 .3 2.4 2.7 -.4 10:00 .058 .2 2.0 2.2 -.4 11:00 .060 .2 2.2 2.5 -.4 12:00 .062 .1 2.1 2.2 -.5 13:00 .065 .1 2.2 2.3 -.4 14:00 .070 .1 2.4 2.5 -.4 15:00 .071 .1 C 2.2 C 2.4 C -.4 16:00 .074 C C C -.4 17:00 .076 .2 C 3.2 C 3.5 C -.4 18:00 .075 .0 4.3 4.4 -.3 19:00 .073 .0 4.6 4.7 -.2 C 20:00 .068 .0 5.9 5.9 C 21:00 .062 .0 5.9 6.0 -.3 C 22:00 .057 C .1 4.3 4.4 -.4 23:00 C .1 4.4 4.5 -.2 Average .048 .4 6.3 6.8 -.4 Max .076 2.7 16.2 17.0 -.2 Max Hour 17:00 05:00 04:00 04:00 23:00 Min .005 .0 2.0 2.2 -.5 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 05-Jun-2026 15:46:00 16:11:00 66.4 70 -5.14% GPT-PS 05-Jun-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 05-Jun-2026 15:46:00 16:38:00 214.8 225 -4.52% GPT-PREC 05-Jun-2026 15:46:00 17:08:00 151.6 155 -2.18% NO2 GPT-PREC 05-Jun-2026 15:46:00 17:08:00 64.4 70 -7.97% NO2 Precision NO2_Diff PRECDIFF 05-Jun-2026 17:15:00 17:15:05 63.2 64.422 -1.89% NOx NOx_Auto NO-PREC 05-Jun-2026 15:46:00 16:11:00 66.5 70 -4.91% Ozone O3_Auto ZERO 05-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 05-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.58% SO2 SO2_Auto ZERO 05-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.65 SPAN 05-Jun-2026 19:46:00 20:36:00 87.8 90 -2.34% PREC 05-Jun-2026 19:46:00 21:01:00 38.6 40 -3.41% Date Printed: 6/6/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/5/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.8 16.7 7.7 01:00 9.4 18.3 8.8 02:00 10.0 17.9 7.8 03:00 10.6 17.7 7.0 04:00 11.7 21.2 9.6 05:00 11.3 19.5 8.2 06:00 11.2 25.0 13.5 07:00 9.9 20.8 10.4 08:00 9.0 22.1 12.3 09:00 8.4 18.6 9.3 10:00 8.2 18.7 9.6 11:00 8.5 21.0 11.4 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average 9.7 19.7 9.6 Max 11.7 25.0 13.5 Max Hour 04:00 06:00 06:00 Min 8.2 16.7 7.0 Count 12 12 12 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.41% Date Printed: 6/6/2026 01:30 Daily Summary Report Site: Union Cross 6/5/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .032 739.2 67.1 52.9 01:00 .030 739.1 64.1 52.3 02:00 .024 738.9 62.4 52.3 03:00 .024 739.0 62.8 52.6 04:00 .033 739.2 61.7 52.6 05:00 .028 739.4 61.9 53.4 06:00 .027 739.6 64.7 55.0 07:00 .027 739.5 70.0 57.5 08:00 .037 739.7 76.1 60.3 09:00 .055 739.7 79.9 60.9 10:00 .063 739.9 82.5 60.0 11:00 .062 739.5 83.4 60.1 12:00 .065 739.0 84.6 60.9 13:00 .067 738.4 85.6 61.6 14:00 .071 738.1 86.4 62.6 15:00 .073 737.6 87.2 62.8 16:00 .074 737.4 87.4 62.6 17:00 .077 737.1 86.4 62.1 18:00 .077 737.0 83.7 60.7 19:00 .071 737.1 80.4 59.0 20:00 .065 737.1 77.1 58.1 21:00 .061 737.4 75.5 57.6 22:00 .055 C 737.5 74.6 58.0 23:00 C 737.5 72.9 58.0 Average .052 738.4 75.7 58.0 Max .077 739.9 87.4 62.8 Max Hour 18:00 10:00 16:00 15:00 Min .024 737.0 61.7 52.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 05-Jun-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 05-Jun-2026 22:50:00 23:50:00 0.07 0.07 .53% 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