Date Printed: 7/17/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/16/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .014 10.3 17.1 6.8 01:00 .010 10.4 18.2 7.8 02:00 .006 10.3 20.1 9.7 03:00 .003 10.1 19.7 9.5 04:00 .001 10.0 18.6 8.5 05:00 .001 9.9 20.0 10.0 06:00 .002 9.6 18.7 9.0 07:00 .015 10.1 18.4 8.3 08:00 .033 11.9 B 21.5 B 9.5 B 09:00 .039 B B B 10:00 .044 12.5 18.4 5.9 11:00 .048 12.3 17.4 5.1 12:00 .049 12.5 18.9 6.3 13:00 .048 B 11.4 16.2 4.8 14:00 .050 11.1 15.5 4.3 15:00 .051 12.2 17.4 5.1 16:00 .052 12.5 17.7 5.1 17:00 .051 13.4 17.6 4.2 18:00 .044 B 13.7 19.4 5.7 19:00 .042 13.9 18.7 4.7 20:00 .028 14.2 18.5 4.3 21:00 .022 14.6 18.7 4.1 22:00 .017 C 14.4 20.2 5.8 23:00 C 15.6 22.6 7.0 Average .029 12.0 18.6 6.5 Max .052 15.6 22.6 10.0 Max Hour 16:00 23:00 23:00 05:00 Min .001 9.6 15.5 4.1 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 16-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.83% Date Printed: 7/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/16/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .2 10.0 10.3 .2 01:00 .030 .2 7.3 7.6 .1 02:00 .024 .7 8.4 9.1 .1 03:00 .017 .3 7.6 7.9 .1 04:00 .013 .5 8.9 9.4 .1 05:00 .013 .6 11.4 12.0 .1 06:00 .015 3.0 11.4 14.5 .3 07:00 .031 2.3 8.1 10.4 .4 08:00 .043 1.7 5.3 7.2 .5 09:00 .053 .4 3.7 4.2 .5 10:00 .059 .3 2.8 3.1 .6 11:00 .058 .2 2.1 2.4 .5 12:00 .063 .2 2.3 2.5 .5 13:00 .065 .2 2.8 3.0 .4 14:00 .061 .2 2.5 2.7 .4 15:00 .056 .2 C 2.5 C 2.8 C .4 16:00 .055 C C C .4 17:00 .054 .3 C 3.2 C 3.6 C .4 18:00 .049 .3 4.9 5.2 .4 19:00 .047 .0 5.9 6.0 .4 C 20:00 .042 .1 9.2 9.4 C 21:00 .033 .1 13.5 13.7 .4 C 22:00 .020 C .5 17.6 18.2 .3 23:00 C .2 12.1 12.4 .3 Average .040 .5 7.1 7.7 .3 Max .065 3.0 17.6 18.2 .6 Max Hour 13:00 06:00 22:00 22:00 10:00 Min .013 .0 2.1 2.4 .1 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 16-Jul-2026 15:46:00 16:11:00 66 70 -5.68% GPT-PS 16-Jul-2026 15:46:00 16:18:00 0.5 0.0 .54 GPTZ 16-Jul-2026 15:46:00 16:38:00 213.7 225 -5.01% GPT-PREC 16-Jul-2026 15:46:00 17:08:00 149.5 155 -3.49% NO2 GPT-PREC 16-Jul-2026 15:46:00 17:08:00 65.2 70 -6.77% NO2 Precision NO2_Diff PRECDIFF 16-Jul-2026 17:15:00 17:15:05 64.1 65.258 -1.7% NOx NOx_Auto NO-PREC 16-Jul-2026 15:46:00 16:11:00 66.7 70 -4.69% Ozone O3_Auto ZERO 16-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.96% SO2 SO2_Auto ZERO 16-Jul-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 16-Jul-2026 19:46:00 20:36:00 90.5 90 .61% PREC 16-Jul-2026 19:46:00 21:01:00 39.9 40 -.19% Date Printed: 7/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/16/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 11.3 20.5 8.6 01:00 11.3 21.1 9.2 02:00 11.1 18.3 6.7 03:00 11.2 17.9 6.2 04:00 12.4 21.3 8.4 05:00 13.7 24.7 10.4 06:00 14.4 25.3 10.0 07:00 18.3 34.7 14.8 08:00 16.8 41.8 22.9 09:00 15.5 35.5 18.1 10:00 15.6 27.5 10.3 11:00 15.0 25.7 9.1 12:00 15.1 24.8 8.1 13:00 15.4 26.2 9.1 14:00 15.7 24.5 7.2 15:00 15.6 23.4 6.2 16:00 15.7 24.4 7.1 17:00 16.6 24.4 6.3 18:00 15.3 22.8 6.2 19:00 15.4 22.3 5.8 20:00 31.3 42.0 8.8 21:00 16.8 23.8 6.0 22:00 17.9 26.9 8.0 23:00 19.3 28.9 8.6 Average 15.6 26.1 9.2 Max 31.3 42.0 22.9 Max Hour 20:00 20:00 08:00 Min 11.1 17.9 5.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.19% Date Printed: 7/17/2026 01:30 Daily Summary Report Site: Union Cross 7/16/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .028 737.0 75.8 67.3 01:00 .036 736.8 75.6 66.6 02:00 .033 736.4 75.0 66.4 03:00 .018 736.3 73.2 66.8 04:00 .010 736.2 71.8 67.4 05:00 .007 736.4 71.0 67.8 06:00 .008 736.6 73.2 68.8 07:00 .015 736.7 78.6 70.4 08:00 .039 736.9 83.2 71.1 09:00 .055 737.0 86.0 70.4 10:00 .063 737.1 87.7 70.5 11:00 .066 737.0 89.0 71.1 12:00 .069 736.7 91.1 71.7 13:00 .065 736.4 91.8 72.4 14:00 .057 736.2 92.4 72.8 15:00 .056 735.9 92.8 72.7 16:00 .056 735.8 92.1 72.2 17:00 .055 735.7 92.1 72.6 18:00 .051 735.8 91.7 73.3 19:00 .045 736.0 88.2 71.9 20:00 .038 736.0 84.3 70.3 21:00 .035 736.3 80.5 69.7 22:00 .023 C 736.4 78.9 70.3 23:00 C 736.6 77.8 70.2 Average .040 736.4 83.0 70.1 Max .069 737.1 92.8 73.3 Max Hour 12:00 10:00 15:00 18:00 Min .007 735.7 71.0 66.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Jul-2026 22:50:00 23:50:00 0.07 0.07 .39% 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