Date Printed: 6/9/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/8/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .027 15.3 20.6 5.2 01:00 .022 15.6 20.7 5.1 02:00 .017 14.9 19.3 4.4 03:00 .013 15.6 20.5 4.9 04:00 .010 15.8 26.1 10.3 05:00 .008 15.7 21.5 5.8 06:00 .013 15.2 23.0 7.8 07:00 B 11.0 18.2 7.1 08:00 D 13.3 24.0 10.6 09:00 .058 D 14.9 23.2 8.3 10:00 .068 15.9 25.8 9.8 11:00 .073 16.1 27.2 11.0 12:00 .067 15.0 27.2 12.1 13:00 .066 B 14.6 27.6 12.9 14:00 .066 15.6 27.6 11.9 15:00 .067 16.0 27.3 11.3 16:00 .064 15.9 30.7 14.7 17:00 .058 14.5 26.2 11.7 18:00 .053 11.7 20.9 9.2 19:00 .050 10.9 18.9 8.0 20:00 .041 11.5 24.7 13.1 21:00 .031 11.5 18.8 7.2 22:00 .027 C 12.8 20.3 7.5 23:00 C 13.1 20.0 6.8 Average .042 14.2 23.3 9.0 Max .073 16.1 30.7 14.7 Max Hour 11:00 11:00 16:00 16:00 Min .008 10.9 18.2 4.4 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 08-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.57% Date Printed: 6/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/8/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .036 .1 5.6 5.8 -.4 01:00 .032 .2 6.7 6.9 -.5 02:00 .033 .2 4.4 4.7 -.5 03:00 .028 .2 5.8 6.1 -.5 04:00 .020 .3 12.1 12.5 -.5 05:00 .032 .2 4.7 5.0 -.5 06:00 .034 .9 6.1 7.1 -.3 07:00 .037 1.6 7.8 9.5 .0 08:00 .049 .3 2.4 2.7 -.4 09:00 .053 .2 2.3 2.6 -.4 10:00 .067 .2 2.7 2.9 -.1 11:00 .072 .1 2.7 2.9 -.1 12:00 .068 .1 2.3 2.5 -.3 13:00 .066 .1 2.0 2.1 -.4 14:00 .065 .1 1.9 2.0 -.4 15:00 .064 .1 C 2.0 C 2.2 C -.4 16:00 .065 C C C -.3 17:00 .068 .1 C 2.8 C 3.0 C -.4 18:00 .066 .1 3.4 3.5 -.5 19:00 .062 .0 2.8 2.8 -.5 C 20:00 .056 .1 3.2 3.3 C 21:00 .051 .1 3.5 3.6 -.4 C 22:00 .046 C .1 4.6 4.8 -.5 23:00 C .1 2.5 2.6 -.5 Average .050 .2 4.1 4.3 -.3 Max .072 1.6 12.1 12.5 .0 Max Hour 11:00 07:00 04:00 04:00 07:00 Min .020 .0 1.9 2.0 -.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 08-Jun-2026 15:46:00 16:11:00 66.4 70 -5.05% GPT-PS 08-Jun-2026 15:46:00 16:18:00 0.5 0.0 .54 GPTZ 08-Jun-2026 15:46:00 16:38:00 214.6 225 -4.58% GPT-PREC 08-Jun-2026 15:46:00 17:08:00 150.3 155 -3.02% NO2 GPT-PREC 08-Jun-2026 15:46:00 17:08:00 65.4 70 -6.5% NO2 Precision NO2_Diff PRECDIFF 08-Jun-2026 17:15:00 17:15:05 64.3 65.449 -1.64% NOx NOx_Auto NO-PREC 08-Jun-2026 15:46:00 16:11:00 66.6 70 -4.72% Ozone O3_Auto ZERO 08-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.71% SO2 SO2_Auto ZERO 08-Jun-2026 19:46:00 20:11:00 -0.7 0.0 -.74 SPAN 08-Jun-2026 19:46:00 20:36:00 87.4 90 -2.85% PREC 08-Jun-2026 19:46:00 21:01:00 38.2 40 -4.26% Date Printed: 6/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/8/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 P P P 10:00 B B B 11:00 17.4 26.7 7.9 12:00 16.9 29.1 10.7 13:00 15.8 26.9 9.7 14:00 15.8 28.8 11.4 15:00 15.0 26.4 10.0 16:00 14.2 27.1 11.5 17:00 17.7 31.7 12.4 18:00 17.3 35.0 16.2 19:00 14.2 24.3 9.2 20:00 13.3 21.2 7.2 21:00 12.7 22.3 8.9 22:00 14.2 25.2 10.3 23:00 16.9 24.9 7.3 Average 15.4 26.8 10.2 Max 17.7 35.0 16.2 Max Hour 17:00 18:00 18:00 Min 12.7 21.2 7.2 Count 13 13 13 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.26% Date Printed: 6/9/2026 01:30 Daily Summary Report Site: Union Cross 6/8/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .036 736.8 72.4 63.2 01:00 .032 736.8 71.6 63.6 02:00 .032 736.9 70.6 63.6 03:00 .026 737.0 69.4 63.5 04:00 .019 737.4 68.3 63.6 05:00 .017 737.8 69.8 63.3 06:00 .031 738.4 72.7 63.5 07:00 .041 738.8 76.2 64.6 08:00 .051 739.2 78.8 65.9 09:00 .061 739.4 81.0 66.9 10:00 .070 739.5 83.4 67.7 11:00 .068 739.5 86.0 68.2 12:00 .069 739.2 88.1 68.3 13:00 .069 739.1 88.8 68.8 14:00 .067 738.9 88.4 68.5 15:00 .067 738.6 89.0 68.9 16:00 .065 738.5 88.1 69.0 17:00 .069 739.0 86.3 68.2 18:00 .066 739.2 85.2 68.0 19:00 .053 739.9 81.0 68.9 20:00 .051 740.2 80.1 67.8 21:00 .046 740.7 79.0 68.1 22:00 .048 C 741.1 77.8 67.8 23:00 C 741.2 76.8 67.3 Average .050 738.8 79.5 66.5 Max .070 741.2 89.0 69.0 Max Hour 10:00 23:00 15:00 16:00 Min .017 736.8 68.3 63.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-Jun-2026 22:50:00 23:50:00 0.07 0.07 .59% 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