Date Printed: 7/16/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/15/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .008 10.9 21.3 10.4 01:00 .005 10.8 22.8 12.0 02:00 .002 B 10.0 21.0 10.9 03:00 .000 9.8 21.6 11.7 04:00 .000 9.7 20.9 11.1 05:00 .000 9.3 18.9 9.5 06:00 .003 9.6 20.0 10.4 07:00 .013 10.0 17.7 7.7 08:00 .025 9.5 16.5 7.0 09:00 .039 9.7 15.9 6.2 10:00 .050 11.4 18.5 7.0 11:00 .047 9.5 14.8 5.3 12:00 .047 9.4 13.8 4.3 13:00 .047 8.8 14.3 5.5 14:00 .048 8.8 14.0 5.2 15:00 .048 8.3 14.9 6.6 16:00 .049 8.2 13.2 5.0 17:00 .049 7.8 12.5 4.6 18:00 .044 7.6 11.9 4.3 19:00 .042 B 7.9 12.9 5.0 20:00 .036 8.5 14.6 6.0 21:00 .035 8.8 15.6 6.7 22:00 .026 C 9.1 15.6 6.4 23:00 C 9.4 15.1 5.6 Average .028 9.2 16.5 7.2 Max .050 11.4 22.8 12.0 Max Hour 10:00 10:00 01:00 01:00 Min .000 7.6 11.9 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 15-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 15-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.78% Date Printed: 7/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/15/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .012 .6 13.1 13.7 .1 01:00 .008 .8 13.5 14.4 .1 02:00 .003 3.8 18.8 22.6 .1 03:00 .009 .5 10.7 11.3 .1 04:00 .009 .5 9.0 9.5 .0 05:00 .008 1.0 8.1 9.1 .0 06:00 .009 3.5 8.7 12.3 .1 07:00 .021 2.5 7.4 10.0 .2 08:00 .034 1.0 4.3 5.4 .1 09:00 .043 .5 2.6 3.1 .1 10:00 .048 .3 2.0 2.4 D 11:00 .049 .2 1.9 2.2 D 12:00 .054 .2 2.2 2.5 D 13:00 .057 .2 2.6 2.9 .2 14:00 .059 .2 2.5 2.7 .2 15:00 .060 .2 C 2.6 C 2.9 C .2 16:00 .055 C C C .2 17:00 .052 .2 C 3.0 C 3.3 C .2 18:00 .046 .1 3.8 4.0 .2 19:00 .044 .1 5.5 5.6 .2 C 20:00 .047 .1 7.7 7.8 C 21:00 .048 .1 7.0 7.1 .2 C 22:00 .050 C .1 6.6 6.7 .2 23:00 C .2 9.5 9.7 .1 Average .035 .7 6.6 7.4 .1 Max .060 3.8 18.8 22.6 .2 Max Hour 15:00 02:00 02:00 02:00 22:00 Min .003 .1 1.9 2.2 .0 Count 23 23 23 23 20 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 15-Jul-2026 15:46:00 16:11:00 66.4 70 -5.09% GPT-PS 15-Jul-2026 15:46:00 16:18:00 0.4 0.0 .41 GPTZ 15-Jul-2026 15:46:00 16:38:00 213.7 225 -5.01% GPT-PREC 15-Jul-2026 15:46:00 17:08:00 149.1 155 -3.74% NO2 GPT-PREC 15-Jul-2026 15:46:00 17:08:00 65 70 -7.06% NO2 Precision NO2_Diff PRECDIFF 15-Jul-2026 17:15:00 17:15:05 64.5 65.059 -.82% NOx NOx_Auto NO-PREC 15-Jul-2026 15:46:00 16:11:00 66.7 70 -4.69% Ozone O3_Auto ZERO 15-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.78% SO2 SO2_Auto ZERO 15-Jul-2026 19:46:00 20:11:00 0 0.0 .05 SPAN 15-Jul-2026 19:46:00 20:36:00 90.4 90 .48% PREC 15-Jul-2026 19:46:00 21:01:00 40 40 .14% Date Printed: 7/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/15/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 13.2 24.3 10.6 01:00 13.5 23.1 9.3 02:00 14.0 25.3 10.9 03:00 12.4 22.0 9.3 04:00 11.9 22.8 10.7 05:00 11.3 21.8 10.3 06:00 11.8 21.1 8.9 07:00 11.3 24.7 12.5 08:00 10.5 19.8 8.5 09:00 10.3 17.8 6.6 10:00 9.6 15.9 5.5 11:00 B B B 12:00 P P P 13:00 10.0 18.9 7.8 14:00 10.2 18.0 6.7 15:00 10.4 17.7 6.2 16:00 9.8 17.7 6.8 17:00 9.5 18.0 7.4 18:00 9.7 16.8 6.2 19:00 10.5 18.4 7.1 20:00 10.2 16.4 5.5 21:00 10.1 17.2 6.3 22:00 10.4 17.3 6.3 23:00 10.9 18.2 6.7 Average 10.9 19.6 8.0 Max 14.0 25.3 12.5 Max Hour 02:00 02:00 07:00 Min 9.5 15.9 5.5 Count 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .14% Date Printed: 7/16/2026 01:30 Daily Summary Report Site: Union Cross 7/15/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .006 739.4 69.0 65.5 01:00 .013 739.0 67.9 64.1 02:00 .013 738.5 68.0 63.5 03:00 .004 738.3 66.1 64.1 04:00 .002 738.5 65.3 64.3 05:00 .002 738.7 65.1 64.6 06:00 .006 738.7 67.5 65.8 07:00 .011 D 738.7 72.4 65.9 08:00 D 738.8 78.3 66.4 09:00 D 738.7 82.7 67.0 10:00 .054 D 738.5 84.9 66.7 11:00 .055 738.3 86.7 67.1 12:00 .060 738.0 88.5 68.6 13:00 .063 737.5 89.5 69.5 14:00 .062 737.1 90.9 70.1 15:00 .058 736.8 91.0 70.8 16:00 .057 736.4 90.7 70.4 17:00 .056 736.2 90.3 69.5 18:00 .054 736.3 88.8 69.5 19:00 .044 736.3 85.5 69.4 20:00 .037 736.6 82.6 68.8 21:00 .037 736.9 80.0 68.1 22:00 .036 C 737.0 77.2 67.2 23:00 C 737.1 77.2 66.8 Average .034 737.7 79.4 67.2 Max .063 739.4 91.0 70.8 Max Hour 13:00 00:00 15:00 15:00 Min .002 736.2 65.1 63.5 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Jul-2026 22:50:00 23:50:00 0.07 0.07 .4% 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