Date Printed: 7/19/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/18/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 32.1 45.1 13.0 01:00 .013 32.7 45.5 12.7 02:00 .008 32.9 46.5 13.6 03:00 .005 33.7 48.5 14.7 04:00 .003 34.0 50.1 16.0 05:00 .001 33.9 49.5 15.5 06:00 .003 32.3 47.8 15.4 07:00 .016 37.8 52.7 14.9 08:00 .030 42.7 59.6 16.8 09:00 .042 43.7 63.2 19.5 10:00 .051 36.4 54.9 18.4 11:00 .059 26.7 37.5 10.8 12:00 .056 12.8 20.0 7.1 13:00 .054 9.1 15.6 6.5 14:00 .052 7.9 15.9 7.9 15:00 .048 7.7 13.0 5.2 16:00 .046 B 6.9 17.7 10.7 17:00 .033 6.0 15.9 9.9 18:00 .024 6.5 14.6 8.1 19:00 .020 6.6 14.2 7.5 20:00 .017 5.6 13.6 8.0 21:00 .015 5.8 13.3 7.5 22:00 .010 C 6.0 16.0 10.0 23:00 C 6.2 16.5 10.3 Average .027 21.0 32.8 11.6 Max .059 43.7 63.2 19.5 Max Hour 11:00 09:00 09:00 09:00 Min .001 5.6 13.0 5.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 18-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.55% Date Printed: 7/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/18/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .2 7.6 7.9 .2 01:00 .027 .3 8.2 8.6 .2 02:00 .018 .4 9.5 9.9 .2 03:00 .018 .4 8.9 9.3 .1 04:00 .013 .5 8.2 8.8 .2 05:00 .011 .7 7.9 8.6 .1 06:00 .016 1.4 9.0 10.4 .3 07:00 .022 1.2 7.4 8.7 .5 08:00 .035 .7 4.2 5.0 .3 09:00 .050 .4 3.7 4.2 .3 10:00 .059 .3 3.0 3.4 .3 11:00 .061 .2 2.5 2.8 .4 12:00 .060 .2 2.3 2.6 .3 13:00 .061 .2 2.3 2.6 .2 14:00 .055 .2 2.0 2.2 .2 15:00 .053 .2 C 2.3 C 2.5 C .2 16:00 .047 C C C .2 17:00 .037 1.5 C 7.6 C 9.1 C .1 18:00 .030 1.9 9.8 11.8 .1 19:00 .031 1.4 7.6 9.1 .1 C 20:00 .029 1.0 7.4 8.5 C 21:00 .031 1.0 7.1 8.1 .2 C 22:00 .029 C .8 6.5 7.4 .1 23:00 C 1.3 9.7 11.1 .1 Average .035 .7 6.2 7.0 .2 Max .061 1.9 9.8 11.8 .5 Max Hour 13:00 18:00 18:00 18:00 07:00 Min .011 .2 2.0 2.2 .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 18-Jul-2026 15:46:00 16:11:00 66.2 70 -5.41% GPT-PS 18-Jul-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 18-Jul-2026 15:46:00 16:38:00 213.9 225 -4.92% GPT-PREC 18-Jul-2026 15:46:00 17:08:00 149.3 155 -3.67% NO2 GPT-PREC 18-Jul-2026 15:46:00 17:08:00 65.4 70 -6.47% NO2 Precision NO2_Diff PRECDIFF 18-Jul-2026 17:15:00 17:15:05 64.6 65.474 -1.31% NOx NOx_Auto NO-PREC 18-Jul-2026 15:46:00 16:11:00 67.6 70 -3.39% Ozone O3_Auto ZERO 18-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.34% SO2 SO2_Auto ZERO 18-Jul-2026 19:46:00 20:11:00 0 0.0 .04 SPAN 18-Jul-2026 19:46:00 20:36:00 90.1 90 .2% PREC 18-Jul-2026 19:46:00 21:01:00 40 40 .13% Date Printed: 7/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/18/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 42.3 60.2 15.8 01:00 41.9 61.0 17.2 02:00 39.1 56.8 15.9 03:00 36.0 52.0 14.4 04:00 35.1 50.8 14.2 05:00 31.1 44.6 12.2 06:00 26.3 38.4 10.9 07:00 32.0 46.7 12.8 08:00 50.7 75.3 21.0 09:00 59.5 90.3 26.3 10:00 49.4 75.5 21.9 11:00 28.3 45.1 14.0 12:00 19.5 31.7 10.2 13:00 10.7 20.5 8.3 14:00 9.0 15.9 5.8 15:00 8.4 15.9 6.5 16:00 8.0 31.4 22.0 17:00 5.7 11.8 5.7 18:00 5.7 12.2 6.0 19:00 6.3 13.5 6.7 20:00 6.3 13.1 6.4 21:00 6.2 13.8 7.2 22:00 6.3 15.0 8.2 23:00 6.3 14.4 7.6 Average 23.7 37.7 12.3 Max 59.5 90.3 26.3 Max Hour 09:00 09:00 09:00 Min 5.7 11.8 5.7 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .13% Date Printed: 7/19/2026 01:30 Daily Summary Report Site: Union Cross 7/18/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .017 737.1 79.0 72.6 01:00 .018 736.6 77.4 72.1 02:00 .026 736.4 78.3 71.8 03:00 .023 736.1 77.5 71.7 04:00 .019 735.8 75.9 71.8 05:00 .015 735.7 75.6 72.0 06:00 .020 736.0 76.4 72.4 07:00 .025 736.5 79.0 73.3 08:00 .035 736.5 81.4 73.8 09:00 .046 736.6 84.4 74.6 10:00 .056 736.5 87.2 74.7 11:00 .062 736.0 89.1 75.1 12:00 .069 735.4 90.5 75.6 13:00 .063 734.7 91.5 75.4 14:00 .056 734.3 91.4 75.3 15:00 .055 733.9 89.6 74.9 16:00 .053 734.1 86.2 72.5 17:00 .050 733.9 80.5 69.2 18:00 .045 734.0 80.2 69.2 19:00 .040 734.1 79.5 69.2 20:00 .034 734.0 77.7 69.2 21:00 .035 734.0 76.4 69.2 22:00 .030 C 734.2 75.5 69.9 23:00 C 734.2 74.8 70.3 Average .038 735.2 81.4 72.3 Max .069 737.1 91.5 75.6 Max Hour 12:00 00:00 13:00 12:00 Min .015 733.9 74.8 69.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Jul-2026 22:50:00 23:50:00 0.07 0.07 .23% 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