Date Printed: 6/3/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/2/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .038 5.4 10.3 4.9 01:00 .039 5.3 11.0 5.6 02:00 .041 5.2 10.9 5.6 03:00 .041 5.4 11.9 6.4 04:00 .040 B 5.6 12.1 6.5 05:00 .041 5.6 11.3 5.7 06:00 .039 5.6 12.4 6.8 07:00 .039 5.2 13.2 7.9 08:00 .039 5.1 12.0 6.9 09:00 .040 4.7 11.5 6.8 10:00 .041 4.4 11.1 6.7 11:00 .045 4.2 11.4 7.1 12:00 .048 4.7 12.5 7.7 13:00 .046 4.4 13.2 8.8 14:00 .046 4.7 12.4 7.7 15:00 .048 4.7 12.6 7.9 16:00 .050 4.7 11.3 6.5 17:00 .050 4.9 12.5 7.6 18:00 .049 4.7 12.8 8.0 19:00 .047 4.7 10.9 6.2 20:00 .037 4.9 11.4 6.4 21:00 .036 4.9 10.9 6.0 22:00 .034 C 4.6 9.8 5.1 23:00 C 4.8 11.1 6.3 Average .042 4.9 11.6 6.7 Max .050 5.6 13.2 8.8 Max Hour 17:00 06:00 13:00 13:00 Min .034 4.2 9.8 4.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 02-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.42% Date Printed: 6/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/2/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .043 .0 3.5 3.6 -.1 01:00 .044 .0 2.5 2.6 -.2 02:00 .044 .0 2.4 2.5 -.2 03:00 .043 .0 2.4 2.5 -.3 04:00 .043 .1 2.2 2.3 -.4 05:00 .042 .1 2.2 2.3 -.4 06:00 .040 .1 2.4 2.6 -.3 07:00 .041 .2 1.9 2.1 -.4 08:00 .040 .2 1.6 1.9 -.5 09:00 .041 .2 1.2 1.5 -.4 10:00 .043 .2 1.1 1.4 -.5 11:00 .047 .1 1.2 1.4 -.5 12:00 .047 .2 1.3 1.5 -.5 13:00 .046 .1 1.5 1.6 -.4 14:00 .047 .2 1.6 1.9 -.5 15:00 .050 .1 C 1.2 C 1.4 C -.5 16:00 .052 C C C -.5 17:00 .052 .2 C 1.5 C 1.7 C -.5 18:00 .050 .1 2.0 2.1 -.5 19:00 .045 .0 3.8 3.9 -.5 C 20:00 .042 .1 5.0 5.1 C 21:00 .038 .1 5.5 5.7 -.5 C 22:00 .035 C .1 4.9 5.0 -.5 23:00 C .1 4.2 4.3 -.5 Average .044 .1 2.4 2.6 -.4 Max .052 .2 5.5 5.7 -.1 Max Hour 17:00 17:00 21:00 21:00 00:00 Min .035 .0 1.1 1.4 -.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 02-Jun-2026 15:46:00 16:11:00 66.1 70 -5.5% GPT-PS 02-Jun-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 02-Jun-2026 15:46:00 16:38:00 214 225 -4.88% GPT-PREC 02-Jun-2026 15:46:00 17:08:00 150 155 -3.21% NO2 GPT-PREC 02-Jun-2026 15:46:00 17:08:00 64.5 70 -7.8% NO2 Precision NO2_Diff PRECDIFF 02-Jun-2026 17:15:00 17:15:05 63.9 64.542 -.85% NOx NOx_Auto NO-PREC 02-Jun-2026 15:46:00 16:11:00 66 70 -5.6% Ozone O3_Auto ZERO 02-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.98% SO2 SO2_Auto ZERO 02-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.68 SPAN 02-Jun-2026 19:46:00 20:36:00 87.7 90 -2.54% PREC 02-Jun-2026 19:46:00 21:01:00 38.5 40 -3.66% Date Printed: 6/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/2/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.2 10.1 4.8 01:00 5.0 10.4 5.2 02:00 5.1 12.0 6.8 03:00 5.5 11.2 5.6 04:00 5.6 12.2 6.5 05:00 5.6 12.4 6.7 06:00 5.4 12.9 7.5 07:00 5.4 16.0 10.5 08:00 5.0 12.2 7.2 09:00 4.8 15.0 10.1 10:00 4.4 13.6 9.0 11:00 4.5 14.5 9.7 12:00 4.4 11.6 6.9 13:00 4.5 12.9 8.1 14:00 4.8 14.9 9.7 15:00 4.7 15.5 10.4 16:00 4.7 12.0 7.0 17:00 4.8 18.0 12.9 18:00 4.9 15.2 10.1 19:00 5.3 13.9 8.4 20:00 10.4 19.4 8.9 21:00 5.6 12.7 7.1 22:00 6.4 13.5 7.2 23:00 5.9 12.1 6.3 Average 5.3 13.5 8.0 Max 10.4 19.4 12.9 Max Hour 20:00 20:00 17:00 Min 4.4 10.1 4.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.66% Date Printed: 6/3/2026 01:30 Daily Summary Report Site: Union Cross 6/2/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .041 736.8 66.3 49.5 01:00 .043 736.8 65.4 48.8 02:00 .043 736.9 64.3 48.9 03:00 .045 737.2 63.8 48.6 04:00 .044 737.6 63.3 48.2 05:00 .042 738.3 62.1 47.5 06:00 .040 739.0 61.0 48.1 07:00 .039 739.5 60.1 48.8 08:00 .039 740.1 60.2 48.8 09:00 .041 740.2 62.7 47.6 10:00 .044 740.5 65.2 47.8 11:00 .048 740.4 68.0 49.2 12:00 .048 740.3 69.3 49.9 13:00 .048 740.3 69.4 50.0 14:00 .047 740.3 70.3 51.1 15:00 .051 740.0 71.5 50.8 16:00 .051 740.1 71.7 50.9 17:00 .052 740.5 70.3 49.4 18:00 .050 740.7 69.2 49.2 19:00 .041 740.9 66.5 49.0 20:00 .033 741.2 64.6 49.1 21:00 .025 741.9 61.8 49.2 22:00 .023 C 742.3 59.3 48.8 23:00 C 742.4 58.8 48.3 Average .042 739.7 65.2 49.0 Max .052 742.4 71.7 51.1 Max Hour 17:00 23:00 16:00 14:00 Min .023 736.8 58.8 47.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Jun-2026 22:50:00 23:50:00 0.07 0.07 .72% 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