Date Printed: 7/8/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/7/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .020 7.5 14.9 7.4 01:00 .022 7.5 25.4 17.7 02:00 .020 7.5 20.9 13.3 03:00 .015 7.0 18.0 10.9 04:00 .012 B 6.4 16.8 10.4 05:00 .012 6.4 18.8 12.3 06:00 .011 5.9 17.6 11.6 07:00 .019 5.8 13.0 7.2 08:00 .027 5.8 12.2 6.3 09:00 .037 5.8 11.4 5.5 10:00 .044 6.2 12.6 6.4 11:00 .047 B 6.4 11.4 5.0 12:00 .052 6.5 11.0 4.5 13:00 .050 6.5 11.0 4.5 14:00 .039 5.8 11.3 5.4 15:00 .042 5.3 17.2 11.8 16:00 .047 4.7 11.5 6.8 17:00 .055 6.2 12.1 5.8 18:00 .051 6.1 11.8 5.6 19:00 .039 6.2 12.0 5.8 20:00 .026 6.3 12.9 6.5 21:00 .025 B 6.5 13.4 6.8 22:00 .021 C 6.6 14.1 7.5 23:00 C 6.6 14.5 7.8 Average .031 6.3 14.4 8.0 Max .055 7.5 25.4 17.7 Max Hour 17:00 02:00 01:00 01:00 Min .011 4.7 11.0 4.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 07-Jul-2026 22:50:00 23:50:00 0.066 0.07 -4.78% Date Printed: 7/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/7/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .3 4.1 4.5 .1 01:00 .029 .2 4.3 4.5 .1 02:00 .023 .3 4.8 5.2 .0 03:00 .019 .6 5.4 6.0 .1 04:00 .015 .6 6.6 7.3 .1 05:00 .014 .7 7.3 8.1 .1 06:00 .015 1.8 7.0 8.9 .1 07:00 D 2.3 7.0 9.4 .1 08:00 D 2.3 6.6 8.9 .2 09:00 .041 1.4 5.5 7.0 .2 10:00 .054 .6 3.8 4.5 .2 11:00 .057 .4 3.2 3.7 .2 12:00 .060 .4 2.8 3.2 .2 13:00 .061 .3 2.4 2.7 .2 14:00 .048 .4 3.4 3.9 .1 15:00 .044 .5 C 4.0 C 4.6 C .1 16:00 .050 C C C .2 17:00 .058 .4 C 4.2 C 4.7 C .2 18:00 .056 .4 5.6 6.0 .2 19:00 .045 .4 8.2 8.6 .1 C 20:00 .031 .7 6.9 7.7 C 21:00 .029 .5 6.5 7.1 .2 C 22:00 .028 C .9 7.4 8.3 .2 23:00 C .6 4.9 5.5 .2 Average .038 .7 5.3 6.1 .1 Max .061 2.3 8.2 9.4 .2 Max Hour 13:00 08:00 19:00 07:00 23:00 Min .014 .2 2.4 2.7 .0 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 07-Jul-2026 15:46:00 16:11:00 66.3 70 -5.21% GPT-PS 07-Jul-2026 15:46:00 16:18:00 0.4 0.0 .5 GPTZ 07-Jul-2026 15:46:00 16:38:00 214.1 225 -4.83% GPT-PREC 07-Jul-2026 15:46:00 17:08:00 149.8 155 -3.35% NO2 GPT-PREC 07-Jul-2026 15:46:00 17:08:00 65.2 70 -6.75% NO2 Precision NO2_Diff PRECDIFF 07-Jul-2026 17:15:00 17:15:05 64.3 65.278 -1.46% NOx NOx_Auto NO-PREC 07-Jul-2026 15:46:00 16:11:00 67 70 -4.28% Ozone O3_Auto ZERO 07-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.55% SO2 SO2_Auto ZERO 07-Jul-2026 19:46:00 20:11:00 0 0.0 .03 SPAN 07-Jul-2026 19:46:00 20:36:00 90.7 90 .81% PREC 07-Jul-2026 19:46:00 21:01:00 40.1 40 .34% Date Printed: 7/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/7/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 11.1 20.9 9.3 01:00 9.9 22.1 11.6 02:00 9.1 21.7 12.1 03:00 10.7 26.9 15.5 04:00 11.3 27.1 15.1 05:00 10.9 27.0 15.5 06:00 9.1 20.4 10.8 07:00 8.2 18.6 9.8 08:00 8.3 18.7 9.7 09:00 8.4 17.9 8.8 10:00 9.1 16.4 6.4 11:00 8.9 16.0 6.2 12:00 8.4 14.2 4.9 13:00 8.5 16.0 6.5 14:00 8.0 15.1 6.4 15:00 5.4 16.6 10.5 16:00 5.9 13.6 6.9 17:00 8.5 15.7 6.3 18:00 9.1 15.4 5.5 19:00 8.6 14.8 5.5 20:00 7.2 14.6 6.7 21:00 7.3 14.6 6.8 22:00 8.3 16.7 7.8 23:00 7.6 14.4 6.2 Average 8.6 18.1 8.7 Max 11.3 27.1 15.5 Max Hour 04:00 04:00 05:00 Min 5.4 13.6 4.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .34% Date Printed: 7/8/2026 01:30 Daily Summary Report Site: Union Cross 7/7/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .027 736.4 72.7 71.4 01:00 .030 736.4 72.0 71.2 02:00 .031 735.6 71.5 71.2 03:00 .027 735.3 70.8 70.8 04:00 .022 735.4 70.7 70.7 05:00 .016 735.8 70.8 70.8 06:00 .020 736.2 71.9 71.9 07:00 .026 736.6 74.2 72.4 08:00 .034 736.7 77.0 72.3 09:00 .043 736.7 79.6 72.7 10:00 .051 736.8 82.4 73.0 11:00 .052 736.7 84.8 73.4 12:00 .054 736.1 87.2 73.4 13:00 .051 735.6 89.2 73.3 14:00 .049 735.5 88.3 72.0 15:00 .046 735.2 83.5 71.1 16:00 .050 735.2 84.1 70.9 17:00 .058 735.0 87.3 73.1 18:00 .060 735.1 86.6 73.3 19:00 .045 735.5 83.3 72.9 20:00 .034 736.0 81.6 73.5 21:00 .028 736.4 80.7 73.0 22:00 .023 C 736.3 79.0 73.3 23:00 C 736.3 78.0 73.1 Average .038 735.9 79.4 72.2 Max .060 736.8 89.2 73.5 Max Hour 18:00 10:00 13:00 20:00 Min .016 735.0 70.7 70.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Jul-2026 22:50:00 23:50:00 0.07 0.07 .06% 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