Date Printed: 6/22/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .025 6.4 10.9 4.4 01:00 .017 6.5 11.5 5.0 02:00 .016 6.9 11.3 4.3 03:00 .013 7.4 12.6 5.2 04:00 .007 7.4 12.4 4.9 05:00 .005 7.7 13.5 5.8 06:00 .007 7.7 13.2 5.4 07:00 .020 8.5 14.5 5.9 08:00 .033 7.1 13.1 5.9 09:00 .045 5.5 11.2 5.7 10:00 .049 5.1 15.2 10.0 11:00 .051 B 4.6 10.0 5.3 12:00 .051 4.6 10.7 6.1 13:00 .052 5.0 10.4 5.4 14:00 .054 5.1 10.8 5.7 15:00 .057 5.7 12.0 6.2 16:00 .061 7.9 14.7 6.7 17:00 .058 8.3 15.7 7.4 18:00 .051 7.5 13.2 5.6 19:00 .044 7.5 13.5 5.9 20:00 .042 7.7 13.5 5.7 21:00 .037 8.0 12.9 4.9 22:00 .031 C 8.4 13.7 5.3 23:00 B 8.8 13.9 5.1 Average .035 6.8 12.6 5.7 Max .061 8.8 15.7 10.0 Max Hour 16:00 23:00 17:00 10:00 Min .005 4.6 10.0 4.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Jun-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 21-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.88% Date Printed: 6/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .035 .3 7.7 8.1 -.3 01:00 .031 .5 8.6 9.1 -.4 02:00 .025 .5 9.8 10.3 -.4 03:00 .022 .5 9.5 10.1 -.4 04:00 .013 .7 11.8 12.5 -.5 05:00 .014 2.3 10.6 12.9 -.5 06:00 .018 2.4 8.8 11.3 -.4 07:00 .030 2.2 7.8 10.0 -.4 08:00 .044 .7 3.1 3.9 -.4 09:00 .051 .4 2.0 2.5 -.5 10:00 .055 .3 1.8 2.1 -.5 11:00 .058 .3 1.8 2.1 -.4 12:00 .059 .3 1.9 2.2 -.5 13:00 .057 .3 1.9 2.2 -.4 14:00 .056 .4 2.4 2.8 -.4 15:00 .058 .2 C 1.9 C 2.2 C -.4 16:00 .061 C C C -.4 17:00 .064 .2 C 2.6 C 2.9 C -.2 18:00 .057 .1 3.2 3.4 -.4 19:00 .050 .1 4.5 4.6 -.4 C 20:00 .043 .1 6.8 6.9 C 21:00 .039 .2 8.2 8.5 -.4 C 22:00 .039 C .1 6.4 6.6 -.4 23:00 C .1 8.1 8.3 -.4 Average .042 .5 5.7 6.3 -.4 Max .064 2.4 11.8 12.9 -.2 Max Hour 17:00 06:00 04:00 05:00 17:00 Min .013 .1 1.8 2.1 -.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 21-Jun-2026 15:46:00 16:11:00 66.5 70 -4.98% GPT-PS 21-Jun-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 21-Jun-2026 15:46:00 16:38:00 215 225 -4.43% GPT-PREC 21-Jun-2026 15:46:00 17:08:00 149.8 155 -3.32% NO2 GPT-PREC 21-Jun-2026 15:46:00 17:08:00 65.5 70 -6.41% NO2 Precision NO2_Diff PRECDIFF 21-Jun-2026 17:15:00 17:15:05 65.1 65.514 -.53% NOx NOx_Auto NO-PREC 21-Jun-2026 15:46:00 16:11:00 66.5 70 -4.97% Ozone O3_Auto ZERO 21-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.53% SO2 SO2_Auto ZERO 21-Jun-2026 19:46:00 20:11:00 -0.7 0.0 -.7 SPAN 21-Jun-2026 19:46:00 20:36:00 87.2 90 -3.1% PREC 21-Jun-2026 19:46:00 21:01:00 38.1 40 -4.61% Date Printed: 6/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.3 14.3 5.6 01:00 9.2 14.8 5.2 02:00 8.8 14.4 5.3 03:00 9.1 15.0 5.6 04:00 9.3 15.3 5.8 05:00 9.0 14.6 5.3 06:00 9.7 16.1 6.0 07:00 8.7 19.7 10.3 08:00 5.6 12.3 6.1 09:00 4.9 10.4 5.0 10:00 5.1 11.6 5.9 11:00 5.2 11.3 5.5 12:00 5.0 11.5 5.8 13:00 5.1 10.8 5.0 14:00 5.4 11.7 5.6 15:00 5.6 12.4 6.1 16:00 6.0 12.8 6.0 17:00 8.8 17.0 7.2 18:00 8.3 16.0 6.8 19:00 8.1 15.4 6.5 20:00 9.0 15.3 5.6 21:00 10.6 16.4 5.2 22:00 10.4 16.8 5.7 23:00 10.9 17.6 6.1 Average 7.7 14.3 5.9 Max 10.9 19.7 10.3 Max Hour 23:00 07:00 07:00 Min 4.9 10.4 5.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.61% Date Printed: 6/22/2026 01:30 Daily Summary Report Site: Union Cross 6/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .034 734.8 70.7 59.4 01:00 .029 734.9 69.1 59.4 02:00 .023 734.7 67.7 59.5 03:00 .019 734.5 66.8 59.7 04:00 .010 734.6 64.5 59.7 05:00 .010 734.8 65.0 60.2 06:00 .015 735.1 67.7 61.0 07:00 .030 735.4 73.4 62.1 08:00 .045 735.8 79.3 61.4 09:00 .053 735.7 82.2 60.7 10:00 .055 735.4 83.8 61.2 11:00 .056 735.1 85.8 62.2 12:00 .057 734.8 86.9 63.0 13:00 .059 734.6 88.2 63.7 14:00 .058 734.5 89.3 65.0 15:00 .060 734.3 89.2 65.4 16:00 .063 734.2 88.4 64.7 17:00 .063 734.1 87.9 66.0 18:00 .057 734.4 86.2 65.5 19:00 .049 734.6 83.3 64.1 20:00 .045 734.8 80.4 63.4 21:00 .044 735.0 78.8 63.4 22:00 .040 C 735.3 76.6 63.0 23:00 C 735.2 75.5 62.9 Average .042 734.8 78.6 62.3 Max .063 735.8 89.3 66.0 Max Hour 17:00 08:00 14:00 17:00 Min .010 734.1 64.5 59.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.35% 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