Date Printed: 4/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .033 5.9 15.0 9.1 01:00 .025 5.8 13.7 7.8 02:00 .024 B 6.2 12.9 6.7 03:00 .020 6.4 12.4 6.0 04:00 .020 6.8 13.2 6.3 05:00 .011 7.1 15.7 8.6 06:00 .011 B 12.8 76.0 63.3 07:00 .026 9.1 36.3 27.1 08:00 .036 7.1 24.5 17.3 09:00 .046 7.5 18.5 11.0 10:00 .057 7.7 20.9 13.2 11:00 .063 7.4 18.6 11.1 12:00 .064 7.7 24.6 16.8 13:00 .064 7.5 22.6 15.1 14:00 .063 7.0 20.2 13.2 15:00 .058 6.2 17.3 11.1 16:00 .057 6.6 17.2 10.6 17:00 .059 7.4 18.6 11.2 18:00 .055 7.9 20.5 12.5 19:00 .045 B 8.5 19.6 11.1 20:00 .043 9.4 28.9 19.4 21:00 .044 8.9 26.3 17.4 22:00 .040 C 8.9 22.3 13.4 23:00 C 8.9 19.8 10.9 Average .041 7.6 22.3 14.5 Max .064 12.8 76.0 63.3 Max Hour 13:00 06:00 06:00 06:00 Min .011 5.8 12.4 6.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Apr-2026 22:50:00 23:50:00 0.07 0.07 .14% Date Printed: 4/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .042 .1 5.2 5.3 .5 01:00 .039 .1 5.0 5.2 .3 02:00 .035 .1 5.9 6.1 .2 03:00 .034 .1 7.2 7.3 .1 04:00 .030 .1 8.3 8.5 .1 05:00 .022 .4 10.7 11.1 .0 06:00 .016 2.7 17.8 20.6 .1 07:00 .028 2.3 11.6 14.0 .2 08:00 .036 1.9 7.6 9.6 .3 09:00 .043 1.5 6.2 7.7 .4 10:00 .055 .6 4.1 4.7 .1 11:00 .062 .3 2.9 3.2 .1 12:00 .062 .2 2.4 2.7 .1 13:00 .064 .2 2.2 2.5 D 14:00 .061 .2 2.3 2.6 D 15:00 .058 .2 C 2.2 C 2.4 C .1 16:00 .058 C C C .1 17:00 .056 .0 C 4.4 C 4.4 C .2 18:00 .047 .2 10.1 10.4 .7 19:00 .047 .1 6.4 6.5 .4 C 20:00 .046 .0 4.3 4.4 C 21:00 .042 .1 5.5 5.7 .1 C 22:00 .039 C .1 6.1 6.3 .1 23:00 C .1 6.8 7.0 .1 Average .044 .5 6.3 6.8 .2 Max .064 2.7 17.8 20.6 .7 Max Hour 13:00 06:00 06:00 06:00 18:00 Min .016 .0 2.2 2.4 .0 Count 23 23 23 23 21 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 22-Apr-2026 15:46:00 16:11:00 67.3 70 -3.76% GPT-PS 22-Apr-2026 15:46:00 16:18:00 0.5 0.0 .54 GPTZ 22-Apr-2026 15:46:00 16:38:00 216.6 225 -3.73% GPT-PREC 22-Apr-2026 15:46:00 17:08:00 151.1 155 -2.47% NO2 GPT-PREC 22-Apr-2026 15:46:00 17:08:00 65.9 70 -5.83% NO2 Precision NO2_Diff PRECDIFF 22-Apr-2026 17:15:00 17:15:05 65.4 65.922 -.74% NOx NOx_Auto NO-PREC 22-Apr-2026 15:46:00 16:11:00 67.3 70 -3.72% Ozone O3_Auto ZERO 22-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Apr-2026 22:50:00 23:50:00 0.067 0.07 -4.1% SO2 SO2_Auto ZERO 22-Apr-2026 19:46:00 20:11:00 0 0.0 -.02 SPAN 22-Apr-2026 19:46:00 20:36:00 85.3 90 -5.17% PREC 22-Apr-2026 19:46:00 21:01:00 37.7 40 -5.62% Date Printed: 4/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.2 15.1 9.1 01:00 6.1 14.4 8.5 02:00 6.5 13.8 7.5 03:00 7.1 15.3 8.5 04:00 7.3 15.4 8.4 05:00 7.6 15.6 8.4 06:00 8.3 16.8 8.9 07:00 7.9 19.0 11.3 08:00 7.6 20.5 12.9 09:00 8.1 23.3 14.8 10:00 8.3 24.5 15.4 11:00 7.9 24.6 15.9 12:00 7.8 22.9 14.2 13:00 7.8 24.6 15.7 14:00 7.2 24.3 16.0 15:00 6.4 19.7 12.4 16:00 7.7 23.3 14.8 17:00 7.8 22.1 13.6 18:00 8.3 24.0 15.1 19:00 9.0 20.9 11.4 20:00 8.1 19.4 11.0 21:00 7.9 18.3 10.2 22:00 7.9 18.6 10.4 23:00 8.5 19.7 11.1 Average 7.6 19.8 11.8 Max 9.0 24.6 16.0 Max Hour 19:00 13:00 14:00 Min 6.1 13.8 7.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.62% Date Printed: 4/23/2026 01:30 Daily Summary Report Site: Union Cross 4/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 740.9 53.7 37.8 01:00 .036 740.5 52.6 37.6 02:00 .035 740.2 51.7 37.6 03:00 .035 739.9 52.3 37.8 04:00 .032 739.9 51.5 37.9 05:00 .027 740.1 49.2 37.8 06:00 .027 740.4 49.6 38.5 07:00 D 740.5 53.6 40.8 08:00 D 740.3 59.2 43.3 09:00 .046 D 740.1 65.6 46.6 10:00 .057 739.7 70.9 48.1 11:00 .062 739.3 74.1 48.4 12:00 .064 738.7 76.3 49.5 13:00 .064 738.0 78.4 51.2 14:00 .065 737.3 79.9 52.3 15:00 .062 736.6 80.4 53.0 16:00 .060 736.4 78.7 52.5 17:00 .058 736.5 77.4 53.0 18:00 .054 736.6 73.7 51.5 19:00 .050 737.0 71.1 50.6 20:00 .045 737.4 68.8 49.9 21:00 .042 737.5 67.3 49.4 22:00 .040 C 737.5 65.6 48.8 23:00 C 737.5 62.7 48.5 Average .047 738.7 65.1 45.9 Max .065 740.9 80.4 53.0 Max Hour 14:00 00:00 15:00 17:00 Min .027 736.4 49.2 37.6 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Apr-2026 22:50:00 23:50:00 0.07 0.07 1.42% 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