Date Printed: 6/10/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/9/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .032 B 13.7 19.4 5.6 01:00 .036 12.0 19.8 7.7 02:00 .032 11.4 18.8 7.4 03:00 .027 11.8 18.5 6.6 04:00 .029 10.0 19.6 9.6 05:00 .028 7.9 16.7 8.7 06:00 .029 B 6.7 13.9 7.1 07:00 .027 6.4 13.0 6.5 08:00 .030 8.4 18.7 10.2 09:00 .032 9.9 22.3 12.3 10:00 .034 11.1 23.1 12.0 11:00 .037 11.8 24.1 12.2 12:00 .039 11.2 21.6 10.4 13:00 .039 11.3 19.1 7.8 14:00 .040 12.2 19.6 7.4 15:00 .040 13.1 23.8 10.7 16:00 .037 12.3 21.6 9.2 17:00 .039 12.7 21.9 9.2 18:00 .039 B 12.2 20.1 7.9 19:00 .033 11.8 19.0 7.1 20:00 .028 12.1 18.9 6.8 21:00 .025 12.8 19.5 6.7 22:00 .019 C 13.1 19.3 6.1 23:00 C 13.9 20.3 6.3 Average .032 11.2 19.6 8.3 Max .040 13.9 24.1 12.3 Max Hour 15:00 23:00 11:00 09:00 Min .019 6.4 13.0 5.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 09-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.54% Date Printed: 6/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/9/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .050 .1 1.6 1.7 -.5 01:00 .046 .1 1.6 1.8 -.5 02:00 .040 .1 1.9 2.1 -.5 03:00 .035 .1 1.9 2.0 -.5 04:00 .033 .1 1.8 2.0 -.5 05:00 .032 .1 2.4 2.5 -.5 06:00 .032 .2 3.2 3.4 -.5 07:00 D .3 3.5 3.9 -.5 08:00 D .5 2.9 3.4 -.5 09:00 .036 .4 2.7 3.1 -.4 10:00 .040 .5 2.8 3.3 -.5 11:00 .047 .5 3.2 3.8 -.4 12:00 .049 .3 2.5 2.8 -.5 13:00 .046 .2 2.4 2.6 -.5 14:00 .043 .2 2.5 2.8 -.5 15:00 .045 .2 C 3.0 C 3.3 C -.5 16:00 .046 C C C -.5 17:00 .047 .2 C 3.7 C 3.9 C -.5 18:00 .046 .1 2.9 3.1 -.5 19:00 .042 .1 3.4 3.5 -.5 C 20:00 .037 .1 4.0 4.1 C 21:00 .035 .2 5.0 5.2 -.5 C 22:00 .030 C .3 6.6 6.9 -.5 23:00 C .3 6.3 6.6 -.5 Average .040 .2 3.1 3.3 -.4 Max .050 .5 6.6 6.9 -.4 Max Hour 00:00 11:00 22:00 22:00 11:00 Min .030 .1 1.6 1.7 -.5 Count 21 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 09-Jun-2026 15:46:00 16:11:00 66.2 70 -5.37% GPT-PS 09-Jun-2026 15:46:00 16:18:00 0.5 0.0 .54 GPTZ 09-Jun-2026 15:46:00 16:38:00 214.4 225 -4.68% GPT-PREC 09-Jun-2026 15:46:00 17:08:00 149.9 155 -3.23% NO2 GPT-PREC 09-Jun-2026 15:46:00 17:08:00 64.7 70 -7.44% NO2 Precision NO2_Diff PRECDIFF 09-Jun-2026 17:15:00 17:15:05 64.4 64.789 -.49% NOx NOx_Auto NO-PREC 09-Jun-2026 15:46:00 16:11:00 66.4 70 -5.14% Ozone O3_Auto ZERO 09-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Jun-2026 22:50:00 23:50:00 0.067 0.07 -4.06% SO2 SO2_Auto ZERO 09-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.69 SPAN 09-Jun-2026 19:46:00 20:36:00 87.5 90 -2.76% PREC 09-Jun-2026 19:46:00 21:01:00 38.3 40 -4.2% Date Printed: 6/10/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/9/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 14.3 21.6 6.7 01:00 14.0 22.6 8.1 02:00 14.2 22.8 8.1 03:00 12.9 23.3 10.0 04:00 9.8 21.5 11.3 05:00 8.9 17.6 8.4 06:00 6.9 14.5 7.4 07:00 5.7 12.9 6.9 08:00 8.2 20.6 12.0 09:00 9.8 23.3 13.1 10:00 11.2 24.1 12.4 11:00 12.5 29.4 16.0 12:00 12.8 23.2 9.6 13:00 13.3 24.1 9.9 14:00 13.8 23.5 8.9 15:00 14.0 25.9 11.1 16:00 14.3 24.9 9.7 17:00 14.8 25.6 10.0 18:00 12.7 20.0 6.7 19:00 13.0 20.2 6.5 20:00 13.6 21.7 7.5 21:00 15.1 24.1 8.5 22:00 16.0 25.9 9.3 23:00 16.3 25.9 9.1 Average 12.4 22.4 9.4 Max 16.3 29.4 16.0 Max Hour 23:00 11:00 11:00 Min 5.7 12.9 6.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.2% Date Printed: 6/10/2026 01:30 Daily Summary Report Site: Union Cross 6/9/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .047 741.2 75.5 66.9 01:00 .042 741.3 74.2 66.3 02:00 .037 741.3 73.0 65.7 03:00 .033 741.4 71.0 61.6 04:00 .032 741.9 70.5 60.9 05:00 .031 742.2 70.2 60.0 06:00 .031 742.6 69.8 58.9 07:00 .029 742.6 69.9 59.2 08:00 .033 742.5 70.7 60.7 09:00 .034 742.4 71.4 62.0 10:00 .038 742.2 73.3 63.8 11:00 .041 741.9 75.4 65.5 12:00 .043 741.6 77.2 66.8 13:00 .046 741.2 77.8 67.6 14:00 .044 741.0 78.0 68.0 15:00 .046 740.7 77.6 68.1 16:00 .047 740.3 77.7 68.5 17:00 .047 739.6 77.3 68.5 18:00 .045 739.0 77.0 68.0 19:00 .040 738.9 75.7 68.0 20:00 .037 739.1 74.3 67.9 21:00 .031 739.3 73.4 68.1 22:00 .028 C 739.0 72.2 68.1 23:00 C 738.5 71.0 68.0 Average .038 740.9 73.9 65.2 Max .047 742.6 78.0 68.5 Max Hour 17:00 07:00 14:00 17:00 Min .028 738.5 69.8 58.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 09-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 09-Jun-2026 22:50:00 23:50:00 0.07 0.07 -.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