Date Printed: 6/24/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/23/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .012 4.4 20.2 15.8 01:00 .007 5.0 23.2 18.2 02:00 .003 5.2 22.7 17.4 03:00 .001 5.6 24.4 18.7 04:00 .001 5.4 22.6 17.2 05:00 .000 5.7 24.1 18.3 06:00 .002 5.4 20.5 14.9 07:00 .006 5.5 16.8 11.3 08:00 .010 6.0 14.8 8.8 09:00 .018 5.6 19.7 14.1 10:00 .030 3.0 13.8 10.7 11:00 .031 3.1 7.1 4.0 12:00 .038 3.0 6.5 3.4 13:00 .039 2.0 7.0 5.0 14:00 .039 2.2 5.6 3.4 15:00 .039 B 2.5 9.5 6.9 16:00 .040 2.6 7.4 4.7 17:00 .041 2.7 6.6 3.9 18:00 .040 2.6 7.2 4.6 19:00 .039 3.1 7.0 3.8 20:00 .033 3.5 8.7 5.2 21:00 .026 3.9 8.4 4.4 22:00 .025 C 4.3 9.5 5.1 23:00 C 4.6 9.8 5.2 Average .022 4.0 13.4 9.3 Max .041 6.0 24.4 18.7 Max Hour 17:00 08:00 03:00 03:00 Min .000 2.0 5.6 3.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Jun-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 23-Jun-2026 22:50:00 23:50:00 0.066 0.07 -4.34% Date Printed: 6/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/23/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .012 .8 8.8 9.6 -.5 01:00 .010 1.2 7.1 8.3 -.5 02:00 .007 1.8 6.6 8.4 -.5 03:00 .006 1.0 6.3 7.3 -.5 04:00 .007 1.7 5.9 7.6 -.5 05:00 .004 3.6 8.4 12.1 -.5 06:00 .005 4.3 7.9 12.2 -.4 07:00 D 6.4 9.8 16.3 -.4 08:00 D 2.0 5.7 7.8 -.4 09:00 .018 D 1.0 5.1 6.2 -.4 10:00 .027 .8 3.4 4.2 -.5 11:00 .033 .7 1.9 2.7 -.5 12:00 .037 .5 2.2 2.8 -.5 13:00 .038 .6 2.2 2.9 -.5 14:00 .040 .5 2.2 2.8 -.5 15:00 .040 .6 C 2.3 C 2.9 C -.5 16:00 .041 C C C -.5 17:00 .039 .6 C 2.5 C 3.1 C -.5 18:00 .038 .5 3.4 3.9 -.5 19:00 .035 .4 4.4 4.8 -.5 C 20:00 .031 .2 6.4 6.6 C 21:00 .033 .2 5.6 5.9 -.5 C 22:00 .030 C .1 5.7 5.8 -.5 23:00 C .2 6.7 6.9 -.5 Average .025 1.2 5.2 6.5 -.4 Max .041 6.4 9.8 16.3 -.4 Max Hour 16:00 07:00 07:00 07:00 09:00 Min .004 .1 1.9 2.7 -.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 23-Jun-2026 15:46:00 16:11:00 66.4 70 -5.02% GPT-PS 23-Jun-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 23-Jun-2026 15:46:00 16:38:00 214.6 225 -4.58% GPT-PREC 23-Jun-2026 15:46:00 17:08:00 149.8 155 -3.3% NO2 GPT-PREC 23-Jun-2026 15:46:00 17:08:00 65.2 70 -6.73% NO2 Precision NO2_Diff PRECDIFF 23-Jun-2026 17:15:00 17:15:05 64.7 65.286 -.75% NOx NOx_Auto NO-PREC 23-Jun-2026 15:46:00 16:11:00 66.4 70 -5.08% Ozone O3_Auto ZERO 23-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 23-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.17% SO2 SO2_Auto ZERO 23-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.65 SPAN 23-Jun-2026 19:46:00 20:36:00 87 90 -3.26% PREC 23-Jun-2026 19:46:00 21:01:00 38.1 40 -4.59% Date Printed: 6/24/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/23/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.7 29.2 21.9 01:00 7.2 25.7 18.0 02:00 7.1 27.4 19.6 03:00 7.4 26.4 18.3 04:00 7.7 23.1 14.8 05:00 7.6 23.7 15.5 06:00 7.5 23.4 15.2 07:00 7.5 19.9 11.7 08:00 7.6 17.3 9.1 09:00 7.6 20.9 12.5 10:00 4.5 18.5 13.4 11:00 3.9 9.9 5.5 12:00 3.7 8.7 4.6 13:00 2.6 11.2 8.1 14:00 2.6 9.9 6.8 15:00 2.5 9.0 6.0 16:00 3.0 11.7 8.1 17:00 2.9 10.5 7.1 18:00 2.8 8.5 5.4 19:00 3.2 8.6 5.1 20:00 4.6 13.1 8.2 21:00 4.7 11.0 6.0 22:00 5.1 14.1 8.8 23:00 5.1 13.0 7.7 Average 5.2 16.4 10.7 Max 7.7 29.2 21.9 Max Hour 04:00 00:00 00:00 Min 2.5 8.5 4.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.59% Date Printed: 6/24/2026 01:30 Daily Summary Report Site: Union Cross 6/23/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 P 734.1 P 68.5 P 68.1 P 01:00 B 733.9 69.5 68.4 02:00 B 733.6 69.4 68.4 03:00 B 733.3 69.7 68.8 04:00 B 733.4 70.9 69.4 05:00 B 733.7 70.9 69.7 06:00 B 733.5 72.3 70.4 07:00 B 733.4 73.2 70.8 08:00 B 733.5 75.1 70.5 09:00 .022 D 733.4 75.4 71.0 10:00 .028 733.7 71.2 69.6 11:00 .032 733.7 73.8 69.9 12:00 .040 733.7 78.2 68.9 13:00 .041 733.6 80.2 67.3 14:00 .043 733.8 81.1 65.9 15:00 .044 734.0 81.7 64.2 16:00 .044 734.4 80.3 63.3 17:00 .042 735.2 77.7 61.3 18:00 .042 736.0 75.9 58.8 19:00 .041 736.5 74.1 57.3 20:00 .038 737.1 72.0 56.8 21:00 .036 737.6 70.9 56.2 22:00 .036 C 737.9 69.8 54.8 23:00 C 737.9 68.4 54.0 Average .037 734.6 73.7 65.1 Max .044 737.9 81.7 71.0 Max Hour 16:00 23:00 15:00 09:00 Min .022 733.3 68.4 54.0 Count 14 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 23-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 23-Jun-2026 22:50:00 23:50:00 0.07 0.07 .16% 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