Date Printed: 4/3/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/2/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .028 8.3 17.5 9.2 01:00 .025 8.3 16.3 8.0 02:00 .028 9.1 18.9 9.7 03:00 .028 10.6 22.4 11.7 04:00 .027 11.1 21.1 9.9 05:00 .025 B 10.6 19.9 9.3 06:00 .024 9.6 25.9 16.2 07:00 .027 8.9 22.6 13.7 08:00 .031 9.3 20.3 10.9 09:00 .035 10.1 22.0 11.9 10:00 .040 B 9.6 22.1 12.4 11:00 .046 8.8 19.6 10.8 12:00 .052 8.7 22.8 14.0 13:00 .053 8.6 26.6 18.0 14:00 .050 8.1 23.5 15.3 15:00 .048 8.0 20.5 12.5 16:00 .046 8.2 19.4 11.2 17:00 .045 8.7 20.0 11.3 18:00 .045 9.5 21.6 12.0 19:00 .045 11.4 52.0 40.5 20:00 .043 9.5 21.6 12.0 21:00 .042 B 8.8 18.5 9.7 22:00 .042 C 7.8 16.9 9.1 23:00 C 6.1 14.8 8.6 Average .038 9.0 21.9 12.8 Max .053 11.4 52.0 40.5 Max Hour 13:00 19:00 19:00 19:00 Min .024 6.1 14.8 8.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Apr-2026 22:50:00 23:50:00 0.069 0.07 -.86% Date Printed: 4/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/2/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .027 .1 5.0 5.2 .5 01:00 .027 .1 6.0 6.1 .5 02:00 .028 .1 4.9 5.1 .7 03:00 .027 .1 5.2 5.3 .7 04:00 .023 .1 6.3 6.5 .4 05:00 .023 .1 5.2 5.4 .2 06:00 .019 D .6 9.2 9.9 .3 07:00 D 2.5 6.7 9.3 .6 08:00 D 1.8 4.0 5.9 .3 09:00 D .6 2.5 3.1 .1 10:00 D .4 2.3 2.7 .1 11:00 .046 .3 2.3 2.6 .1 12:00 .052 .2 2.1 2.4 .1 13:00 .054 .2 2.4 2.7 .2 14:00 .050 .3 2.3 2.6 .2 15:00 .046 .2 C 2.0 C 2.2 C .1 16:00 .046 C C C .1 17:00 .045 .2 C 1.8 C 2.0 C .0 18:00 .043 .0 4.4 4.4 .1 19:00 .041 .6 5.8 6.4 .2 C 20:00 .041 .0 4.1 4.2 C 21:00 .041 .0 3.8 3.9 .1 C 22:00 .039 C .0 4.8 4.9 .4 23:00 C .0 2.7 2.8 .2 Average .037 .3 4.1 4.5 .2 Max .054 2.5 9.2 9.9 .7 Max Hour 13:00 07:00 06:00 06:00 03:00 Min .019 .0 1.8 2.0 .0 Count 19 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 02-Apr-2026 15:46:00 16:11:00 67 70 -4.19% GPT-PS 02-Apr-2026 15:46:00 16:18:00 0.4 0.0 .42 GPTZ 02-Apr-2026 15:46:00 16:38:00 216.5 225 -3.76% GPT-PREC 02-Apr-2026 15:46:00 17:08:00 151.5 155 -2.25% NO2 GPT-PREC 02-Apr-2026 15:46:00 17:08:00 65.9 70 -5.85% NO2 Precision NO2_Diff PRECDIFF 02-Apr-2026 17:15:00 17:15:05 65 65.905 -1.33% NOx NOx_Auto NO-PREC 02-Apr-2026 15:46:00 16:11:00 67.2 70 -3.87% Ozone O3_Auto ZERO 02-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Apr-2026 22:50:00 23:50:00 0.067 0.07 -4.03% SO2 SO2_Auto ZERO 02-Apr-2026 19:46:00 20:11:00 0 0.0 -.1 SPAN 02-Apr-2026 19:46:00 20:36:00 86.1 90 -4.23% PREC 02-Apr-2026 19:46:00 21:01:00 37.9 40 -5.13% Date Printed: 4/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/2/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 9.4 19.5 9.9 01:00 9.0 20.2 10.9 02:00 10.2 22.9 12.5 03:00 12.0 24.1 11.9 04:00 12.1 22.2 10.1 05:00 10.0 20.4 10.3 06:00 9.0 18.5 9.4 07:00 9.8 34.7 24.8 08:00 10.4 28.6 17.9 09:00 10.7 P 21.4 P 10.3 P 10:00 10.6 21.3 10.2 11:00 9.5 22.3 12.2 12:00 8.9 20.3 10.7 13:00 9.1 25.0 15.0 14:00 8.7 24.0 14.4 15:00 8.3 23.2 14.1 16:00 8.4 20.7 11.6 17:00 8.6 21.9 12.6 18:00 10.7 22.7 11.4 19:00 10.7 23.2 12.0 20:00 10.2 20.6 10.1 21:00 9.7 21.3 11.4 22:00 9.0 20.3 11.1 23:00 7.0 17.5 10.3 Average 9.6 22.3 12.2 Max 12.1 34.7 24.8 Max Hour 04:00 07:00 07:00 Min 7.0 17.5 9.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.13% Date Printed: 4/3/2026 01:30 Daily Summary Report Site: Union Cross 4/2/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .034 740.2 68.9 57.7 01:00 .035 740.1 67.9 57.9 02:00 .034 739.9 66.6 58.1 03:00 .033 739.8 65.4 57.9 04:00 .030 740.2 63.9 57.0 05:00 .027 740.8 62.3 56.1 06:00 .028 741.6 61.6 56.1 07:00 .029 742.2 63.5 57.0 08:00 .031 742.4 66.9 58.0 09:00 .035 742.8 69.9 59.3 10:00 .040 742.8 72.9 60.2 11:00 .046 742.7 75.8 60.9 12:00 .051 742.2 78.3 61.4 13:00 .049 741.6 80.1 61.8 14:00 .046 741.0 80.1 61.8 15:00 .045 740.7 80.8 61.4 16:00 .044 740.6 80.7 61.0 17:00 .044 740.7 79.0 59.3 18:00 .045 740.8 76.2 57.8 19:00 .043 741.0 73.0 56.7 20:00 .043 741.3 71.6 55.5 21:00 .042 741.9 70.0 54.2 22:00 .042 C 742.4 68.3 53.1 23:00 C 742.6 66.4 53.6 Average .038 741.3 71.2 58.0 Max .051 742.8 80.8 61.8 Max Hour 12:00 10:00 15:00 14:00 Min .027 739.8 61.6 53.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-Apr-2026 22:50:00 23:50:00 0.069 0.07 -.29% 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