Date Printed: 9/22/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .009 9.3 22.8 13.5 01:00 .006 9.4 22.8 13.3 02:00 .004 9.6 25.7 16.0 03:00 .002 8.4 20.8 12.3 04:00 .001 8.8 25.1 16.2 05:00 .001 8.2 22.0 13.7 06:00 .001 8.6 26.3 17.6 07:00 .004 8.3 21.3 13.0 08:00 .012 7.9 17.4 9.4 09:00 .027 8.3 18.0 9.7 10:00 .038 7.9 15.5 7.6 11:00 .044 8.6 17.7 9.1 12:00 .045 8.9 17.1 8.1 13:00 .051 10.0 19.1 9.1 14:00 .063 10.9 20.0 9.0 15:00 .066 10.5 20.8 10.2 16:00 .054 B 6.1 16.4 10.1 17:00 .053 7.5 13.6 6.0 18:00 .045 5.8 11.6 5.8 19:00 .043 5.1 14.2 9.0 20:00 .035 5.4 14.0 8.6 21:00 .033 4.8 11.8 6.9 22:00 .034 C 4.2 10.1 5.9 23:00 C 4.4 11.2 6.8 Average .029 7.7 18.1 10.2 Max .066 10.9 26.3 17.6 Max Hour 15:00 14:00 06:00 06:00 Min .001 4.2 10.1 5.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Sep-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 21-Sep-2026 22:50:00 23:50:00 0.067 0.07 -4.06% Date Printed: 9/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .019 .2 6.5 6.8 .2 01:00 .015 .3 7.4 7.7 .2 02:00 .015 .3 4.2 4.5 .2 03:00 .011 .3 4.8 5.1 .2 04:00 .007 .4 7.1 7.6 .2 05:00 .005 .9 8.4 9.4 .2 06:00 .005 2.9 9.0 11.9 .2 07:00 .016 2.5 8.2 10.8 .2 08:00 .028 2.1 6.9 9.0 .2 09:00 .035 2.3 7.0 9.3 .3 10:00 .051 .6 3.9 4.5 .2 11:00 .061 .4 4.3 4.8 .3 12:00 .069 .2 3.2 3.4 .3 13:00 .060 .1 2.2 2.3 .4 14:00 .069 .1 2.5 2.6 .4 15:00 .066 .1 C 3.0 C 3.2 C .4 16:00 .056 C C C .2 17:00 .050 .4 C 4.5 C 5.0 C .2 18:00 .042 .2 6.7 7.0 .2 19:00 .034 .2 8.6 8.8 .2 C 20:00 .029 .3 7.0 7.4 C 21:00 .030 .2 4.9 5.2 .3 C 22:00 .032 C .2 4.3 4.5 .2 23:00 C .2 4.0 4.3 .2 Average .035 .6 5.5 6.3 .2 Max .069 2.9 9.0 11.9 .4 Max Hour 14:00 06:00 06:00 06:00 15:00 Min .005 .1 2.2 2.3 .2 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-Sep-2026 15:46:00 16:11:00 69.6 70 -.54% GPT-PS 21-Sep-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 21-Sep-2026 15:46:00 16:38:00 225.1 225 .07% GPT-PREC 21-Sep-2026 15:46:00 17:08:00 156.7 155 1.14% NO2 GPT-PREC 21-Sep-2026 15:46:00 17:08:00 68.7 70 -1.79% NO2 Precision NO2_Diff PRECDIFF 21-Sep-2026 17:15:00 17:15:05 68.4 68.747 -.5% NOx NOx_Auto NO-PREC 21-Sep-2026 15:46:00 16:11:00 69.7 70 -.32% Ozone O3_Auto ZERO 21-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.17% SO2 SO2_Auto ZERO 21-Sep-2026 19:46:00 20:11:00 0.1 0.0 .19 SPAN 21-Sep-2026 19:46:00 20:36:00 88.2 90 -1.91% PREC 21-Sep-2026 19:46:00 21:01:00 39 40 -2.46% Date Printed: 9/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.8 14.8 5.6 01:00 9.2 15.3 5.8 02:00 8.6 15.6 6.6 03:00 9.1 15.6 6.1 04:00 9.1 15.9 6.4 05:00 9.0 15.6 6.3 06:00 8.5 13.8 5.0 07:00 7.4 13.7 5.8 08:00 7.5 17.4 9.2 09:00 8.2 20.0 11.0 10:00 9.1 18.6 8.6 11:00 9.8 20.3 9.5 12:00 10.5 20.0 8.4 13:00 11.1 20.9 8.6 14:00 11.0 22.1 9.8 15:00 9.7 21.9 11.1 16:00 6.7 15.8 8.6 17:00 6.9 14.2 6.9 18:00 5.4 12.5 6.8 19:00 4.7 13.4 8.4 20:00 4.8 14.5 9.4 21:00 4.8 12.3 7.3 22:00 4.4 9.6 5.0 23:00 5.1 10.5 5.2 Average 7.8 16.0 7.5 Max 11.1 22.1 11.1 Max Hour 13:00 14:00 15:00 Min 4.4 9.6 5.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.46% Date Printed: 9/22/2026 01:30 Daily Summary Report Site: Union Cross 9/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .017 735.2 72.5 68.3 01:00 .011 735.1 70.9 69.0 02:00 .011 735.1 69.9 68.7 03:00 .009 735.0 69.0 68.0 04:00 .007 735.0 68.1 67.5 05:00 .003 735.2 67.8 67.5 06:00 .002 735.4 67.7 67.6 07:00 .006 735.7 70.0 68.7 08:00 .018 736.1 75.5 68.4 09:00 .034 736.4 79.3 68.9 10:00 .046 736.5 82.2 69.9 11:00 .057 736.3 84.4 70.5 12:00 .057 735.8 86.8 71.1 13:00 .061 735.0 88.2 71.2 14:00 .061 734.6 87.7 70.7 15:00 .054 734.6 87.8 70.5 16:00 .054 735.6 75.1 65.6 17:00 .044 735.4 69.5 66.3 18:00 .039 735.4 69.0 65.4 19:00 .034 735.5 67.9 65.1 20:00 .029 736.2 68.0 65.1 21:00 .026 736.6 67.1 64.8 22:00 .027 C 736.7 66.9 64.0 23:00 C 736.9 67.4 64.1 Average .030 735.6 74.1 67.7 Max .061 736.9 88.2 71.2 Max Hour 14:00 23:00 13:00 13:00 Min .002 734.6 66.9 64.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Sep-2026 22:50:00 23:50:00 0.07 0.07 .24% 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