Date Printed: 7/1/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/30/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .006 8.4 15.2 6.8 01:00 .004 B 7.1 13.5 6.4 02:00 .003 6.4 13.0 6.5 03:00 .002 6.7 12.6 5.8 04:00 .003 7.1 12.7 5.6 05:00 .006 7.3 12.3 4.9 06:00 .017 8.6 14.9 6.3 07:00 .024 9.2 14.8 5.6 08:00 .033 8.9 14.3 5.3 09:00 .037 8.9 13.5 4.6 10:00 .042 8.9 13.8 4.8 11:00 .050 9.9 14.9 4.9 12:00 .055 B 10.5 15.4 4.9 13:00 .061 11.3 16.7 5.4 14:00 .065 11.6 19.3 7.6 15:00 .067 12.4 20.8 8.3 16:00 .062 12.0 22.4 10.3 17:00 .064 11.8 27.1 15.3 18:00 .065 B 13.3 34.8 21.6 19:00 .057 14.1 41.9 27.7 20:00 .051 10.5 18.0 7.5 21:00 .044 10.1 17.0 6.8 22:00 .034 C 11.1 16.4 5.2 23:00 C 11.1 16.5 5.3 Average .037 9.8 17.9 8.0 Max .067 14.1 41.9 27.7 Max Hour 15:00 19:00 19:00 19:00 Min .002 6.4 12.3 4.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 30-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.68% Date Printed: 7/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/30/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .023 .3 4.4 4.8 -.5 01:00 .021 .2 4.1 4.4 -.4 02:00 .018 .4 4.8 5.2 -.4 03:00 .017 .4 5.4 5.8 -.5 04:00 .016 .6 6.0 6.6 -.5 05:00 .015 .7 6.3 7.0 -.5 06:00 .020 1.0 5.9 7.0 -.5 07:00 .032 .7 4.6 5.4 -.5 08:00 .038 .8 3.7 4.5 -.5 09:00 .045 .4 2.5 3.0 -.4 10:00 .050 .4 2.6 3.0 -.2 11:00 .055 .3 2.8 3.1 -.4 12:00 .061 .2 2.4 2.6 -.5 13:00 .065 .2 2.4 2.7 -.5 14:00 .063 .2 2.3 2.5 -.5 15:00 .070 .2 C 2.5 C 2.7 C -.2 16:00 .077 C C C .5 17:00 .065 .1 C 4.4 C 4.6 C .2 18:00 .063 .1 2.9 3.1 -.4 19:00 .060 .1 3.7 3.8 -.5 C 20:00 .053 .1 3.8 3.9 C 21:00 .049 .1 3.9 4.0 -.4 C 22:00 .045 C .1 4.0 4.2 -.5 23:00 C .1 3.8 3.9 -.5 Average .044 .3 3.8 4.2 -.3 Max .077 1.0 6.3 7.0 .5 Max Hour 16:00 06:00 05:00 06:00 16:00 Min .015 .1 2.3 2.5 -.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 30-Jun-2026 15:46:00 16:11:00 66.2 70 -5.31% GPT-PS 30-Jun-2026 15:46:00 16:18:00 0.5 0.0 .56 GPTZ 30-Jun-2026 15:46:00 16:38:00 214 225 -4.86% GPT-PREC 30-Jun-2026 15:46:00 17:08:00 149.3 155 -3.62% NO2 GPT-PREC 30-Jun-2026 15:46:00 17:08:00 65.2 70 -6.74% NO2 Precision NO2_Diff PRECDIFF 30-Jun-2026 17:15:00 17:15:05 64.6 65.282 -.92% NOx NOx_Auto NO-PREC 30-Jun-2026 15:46:00 16:11:00 66.3 70 -5.28% Ozone O3_Auto ZERO 30-Jun-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 30-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.4% SO2 SO2_Auto ZERO 30-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.69 SPAN 30-Jun-2026 19:46:00 20:36:00 86.6 90 -3.69% PREC 30-Jun-2026 19:46:00 21:01:00 37.9 40 -5.18% Date Printed: 7/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/30/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.5 13.0 4.2 01:00 9.1 14.1 4.6 02:00 9.5 15.2 5.3 03:00 9.7 14.5 4.4 04:00 9.9 15.8 5.6 05:00 10.3 15.7 5.0 06:00 9.9 16.6 6.3 07:00 9.3 15.5 5.7 08:00 9.4 15.3 5.3 09:00 9.7 14.7 4.4 10:00 10.8 17.1 5.6 11:00 11.1 16.9 5.1 12:00 11.6 18.0 5.5 13:00 12.5 20.2 6.7 14:00 11.9 19.5 6.5 15:00 13.0 22.3 8.1 16:00 13.9 22.7 7.5 17:00 13.6 20.9 6.1 18:00 12.1 21.4 8.2 19:00 11.7 23.3 10.4 20:00 11.6 19.2 6.7 21:00 11.7 20.7 8.1 22:00 11.8 20.5 7.9 23:00 11.5 18.2 6.0 Average 11.0 17.9 6.2 Max 13.9 23.3 10.4 Max Hour 16:00 19:00 19:00 Min 8.5 13.0 4.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.18% Date Printed: 7/1/2026 01:30 Daily Summary Report Site: Union Cross 6/30/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .020 739.3 75.2 68.9 01:00 .021 739.1 74.6 68.9 02:00 .018 739.1 73.9 69.0 03:00 .019 739.1 73.8 69.4 04:00 .019 739.4 73.6 69.6 05:00 .018 739.8 73.4 69.8 06:00 .023 740.2 74.4 69.8 07:00 .032 740.6 77.5 69.6 08:00 .038 740.7 79.0 70.0 09:00 .045 740.5 80.9 70.1 10:00 .050 740.5 82.1 70.2 11:00 .060 740.5 84.0 70.6 12:00 .064 740.0 85.5 71.1 13:00 .066 739.6 87.3 71.4 14:00 .069 739.0 88.6 71.6 15:00 .073 738.7 89.1 71.6 16:00 .060 738.4 89.2 72.1 17:00 .061 738.0 89.9 72.7 18:00 .061 738.0 87.2 72.1 19:00 .055 738.2 84.7 71.3 20:00 .049 738.4 82.9 70.7 21:00 .042 738.8 81.6 70.0 22:00 .041 C 738.7 81.2 69.3 23:00 C 738.8 80.2 68.1 Average .043 739.3 81.2 70.3 Max .073 740.7 89.9 72.7 Max Hour 15:00 08:00 17:00 17:00 Min .018 738.0 73.4 68.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-Jun-2026 22:50:00 23:50:00 0.069 0.07 .19% 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