Date Printed: 7/4/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/3/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .031 15.1 28.0 12.8 01:00 .026 14.8 26.2 11.4 02:00 .022 14.5 25.6 11.0 03:00 .018 14.2 24.5 10.3 04:00 .014 14.3 23.5 9.1 05:00 .012 14.0 24.1 10.0 06:00 .017 13.8 24.1 10.3 07:00 .029 13.8 25.5 11.7 08:00 .041 15.5 30.5 14.9 09:00 .051 15.9 31.5 15.5 10:00 .055 17.0 33.9 16.9 11:00 .059 17.9 36.6 18.6 12:00 .056 17.5 35.2 17.7 13:00 .057 17.3 33.4 16.1 14:00 .061 17.0 33.0 16.0 15:00 .064 B 17.2 32.3 15.0 16:00 .063 17.3 32.9 15.6 17:00 .062 16.5 31.1 14.6 18:00 .056 14.7 27.5 12.8 19:00 .048 14.0 26.1 12.0 20:00 .040 14.4 37.5 23.0 21:00 .033 13.8 26.3 12.5 22:00 .026 C 14.0 25.9 11.8 23:00 C 14.2 27.2 12.9 Average .040 15.3 29.2 13.8 Max .064 17.9 37.5 23.0 Max Hour 15:00 11:00 20:00 20:00 Min .012 13.8 23.5 9.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 03-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 03-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.87% Date Printed: 7/4/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/3/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .041 .2 6.8 7.1 .5 01:00 .037 .3 7.3 7.6 .7 02:00 .033 .3 7.9 8.2 .7 03:00 .031 .3 7.4 7.7 .7 04:00 .031 .3 5.9 6.2 .7 05:00 .025 .5 7.0 7.5 .6 06:00 .028 .9 7.3 8.3 .7 07:00 .038 .9 6.4 7.4 .5 08:00 .051 .5 5.2 5.8 .4 09:00 .059 .3 4.2 4.6 .3 10:00 .067 .2 3.4 3.7 .3 11:00 .067 .1 2.5 2.6 .4 12:00 .071 .1 2.4 2.5 .3 13:00 .071 .1 2.5 2.7 .3 14:00 .069 .1 2.6 2.8 .3 15:00 .069 .1 C 2.8 C 2.9 C .2 16:00 .068 C C C .3 17:00 .067 .1 C 3.0 C 3.2 C .2 18:00 .064 .0 2.9 3.0 .2 19:00 .057 .0 4.3 4.3 .2 C 20:00 .046 .1 7.5 7.6 C 21:00 .037 .1 10.7 10.9 .3 C 22:00 .025 C .6 15.2 15.9 .3 23:00 C .3 13.0 13.3 .3 Average .050 .2 6.0 6.3 .4 Max .071 .9 15.2 15.9 .7 Max Hour 13:00 07:00 22:00 22:00 06:00 Min .025 .0 2.4 2.5 .2 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 03-Jul-2026 15:46:00 16:11:00 66.2 70 -5.35% GPT-PS 03-Jul-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 03-Jul-2026 15:46:00 16:38:00 213.9 225 -4.89% GPT-PREC 03-Jul-2026 15:46:00 17:08:00 149.2 155 -3.69% NO2 GPT-PREC 03-Jul-2026 15:46:00 17:08:00 65.6 70 -6.15% NO2 Precision NO2_Diff PRECDIFF 03-Jul-2026 17:15:00 17:15:05 64.7 65.695 -1.5% NOx NOx_Auto NO-PREC 03-Jul-2026 15:46:00 16:11:00 67 70 -4.2% Ozone O3_Auto ZERO 03-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 03-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.65% SO2 SO2_Auto ZERO 03-Jul-2026 19:46:00 20:11:00 0 0.0 -.06 SPAN 03-Jul-2026 19:46:00 20:36:00 91 90 1.14% PREC 03-Jul-2026 19:46:00 21:01:00 40 40 .02% Date Printed: 7/4/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/3/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 18.8 33.2 13.0 01:00 18.6 34.5 14.7 02:00 18.9 34.0 13.9 03:00 18.9 32.8 12.9 04:00 18.0 31.1 12.1 05:00 18.0 31.8 12.9 06:00 17.5 32.9 14.2 07:00 18.6 33.9 13.7 08:00 19.2 36.3 15.3 09:00 20.3 42.7 20.0 10:00 20.7 48.1 24.5 11:00 20.8 45.3 21.5 12:00 20.3 43.4 20.2 13:00 20.0 43.2 20.1 14:00 19.4 41.3 19.0 15:00 19.6 40.7 18.2 16:00 19.5 42.5 20.1 17:00 19.4 41.0 18.9 18:00 18.2 39.5 18.7 19:00 17.1 34.1 15.1 20:00 19.2 38.0 16.8 21:00 22.3 41.7 17.4 22:00 33.2 59.4 23.6 23:00 20.3 36.8 14.9 Average 19.8 39.0 17.1 Max 33.2 59.4 24.5 Max Hour 22:00 22:00 10:00 Min 17.1 31.1 12.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .02% Date Printed: 7/4/2026 01:30 Daily Summary Report Site: Union Cross 7/3/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .038 738.4 81.5 71.1 01:00 .041 738.3 80.7 70.5 02:00 .040 738.2 79.7 70.0 03:00 .036 738.3 78.1 69.8 04:00 .031 738.4 76.4 69.8 05:00 .024 738.8 75.5 70.0 06:00 .029 738.9 78.3 71.1 07:00 .037 739.1 82.0 72.6 08:00 .051 739.1 85.8 73.6 09:00 .062 738.9 90.3 74.6 10:00 .069 739.1 92.5 74.8 11:00 .067 738.9 94.9 75.0 12:00 .062 738.7 97.0 75.5 13:00 .064 738.3 97.2 75.5 14:00 .065 737.8 97.7 75.7 15:00 .065 737.4 98.2 76.1 16:00 .066 736.9 98.3 76.2 17:00 .065 736.7 97.6 75.1 18:00 .060 736.7 96.2 73.7 19:00 .050 736.8 93.4 72.3 20:00 .041 737.2 88.1 70.2 21:00 .039 737.6 86.8 69.4 22:00 .036 C 737.5 85.7 69.3 23:00 C 737.4 85.1 70.1 Average .049 738.0 88.2 72.5 Max .069 739.1 98.3 76.2 Max Hour 10:00 10:00 16:00 16:00 Min .024 736.7 75.5 69.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 03-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 03-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.67% 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