Date Printed: 5/9/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/8/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .009 6.5 17.8 11.2 01:00 .009 7.0 18.0 10.9 02:00 .009 6.7 16.8 10.1 03:00 .007 6.5 15.4 8.8 04:00 .007 6.6 16.7 10.1 05:00 .005 6.4 16.7 10.3 06:00 .006 7.3 17.4 10.1 07:00 .012 6.8 15.8 9.0 08:00 .028 5.0 13.5 8.5 09:00 .046 3.6 11.7 8.1 10:00 .051 B 3.6 10.5 6.9 11:00 .055 4.0 11.7 7.6 12:00 .057 B 3.9 12.5 8.5 13:00 .059 3.8 13.2 9.4 14:00 .058 3.6 10.7 7.1 15:00 .055 3.4 10.1 6.7 16:00 .055 3.4 10.8 7.4 17:00 .056 3.4 10.5 7.0 18:00 .049 3.5 9.2 5.6 19:00 .044 4.4 13.4 8.9 20:00 .045 5.0 12.1 7.0 21:00 .043 6.0 11.6 5.6 22:00 .038 C 7.0 14.1 7.0 23:00 C 8.5 17.3 8.8 Average .034 5.2 13.6 8.3 Max .059 8.5 18.0 11.2 Max Hour 13:00 23:00 01:00 00:00 Min .005 3.4 9.2 5.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 08-May-2026 22:50:00 23:50:00 0.071 0.07 2.9% Date Printed: 5/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/8/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .008 1.0 9.2 10.3 .0 01:00 .010 .5 8.5 9.0 .0 02:00 .011 .3 8.4 8.7 .0 03:00 .007 .7 7.0 7.7 .0 04:00 .008 .5 5.2 5.8 .0 05:00 .010 2.8 7.3 10.2 .0 06:00 .011 4.5 8.9 13.4 .0 07:00 .024 3.0 5.5 8.5 .0 08:00 .041 .6 2.2 2.8 .1 09:00 .046 .3 1.5 1.8 .2 10:00 .049 .2 1.5 1.7 .1 11:00 .052 .2 1.7 2.0 .1 12:00 .053 .6 3.1 3.7 .2 13:00 .058 .4 3.0 3.4 .2 14:00 .060 .3 2.6 2.9 .1 15:00 .059 .2 C 2.5 C 2.7 C .1 16:00 .056 C C C .0 17:00 .055 .2 C 3.1 C 3.4 C .0 18:00 .055 .1 4.4 4.6 .2 19:00 .046 .1 6.3 6.4 .1 C 20:00 .043 .1 5.7 5.8 C 21:00 .042 .1 4.6 4.7 .1 C 22:00 .041 C .1 5.7 5.8 .2 23:00 C .1 9.4 9.5 .3 Average .036 .7 5.1 5.8 .0 Max .060 4.5 9.4 13.4 .3 Max Hour 14:00 06:00 23:00 06:00 23:00 Min .007 .1 1.5 1.7 .0 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 08-May-2026 15:46:00 16:11:00 66.8 70 -4.48% GPT-PS 08-May-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 08-May-2026 15:46:00 16:38:00 215.9 225 -4% GPT-PREC 08-May-2026 15:46:00 17:08:00 151.3 155 -2.35% NO2 GPT-PREC 08-May-2026 15:46:00 17:08:00 65.5 70 -6.32% NO2 Precision NO2_Diff PRECDIFF 08-May-2026 17:15:00 17:15:05 64.6 65.573 -1.42% NOx NOx_Auto NO-PREC 08-May-2026 15:46:00 16:11:00 66.8 70 -4.49% Ozone O3_Auto ZERO 08-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-May-2026 22:50:00 23:50:00 0.067 0.07 -3.4% SO2 SO2_Auto ZERO 08-May-2026 19:46:00 20:11:00 -0.1 0.0 -.18 SPAN 08-May-2026 19:46:00 20:36:00 89.7 90 -.23% PREC 08-May-2026 19:46:00 21:01:00 39.5 40 -1.15% Date Printed: 5/9/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/8/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.6 16.2 8.8 01:00 9.6 19.9 10.6 02:00 10.4 20.9 10.9 03:00 8.2 17.2 9.4 04:00 8.2 17.0 9.3 05:00 7.4 19.7 12.9 06:00 6.1 15.0 9.1 07:00 4.9 14.6 9.8 08:00 3.8 14.7 10.9 09:00 3.6 13.7 10.0 10:00 B B B 11:00 3.7 11.0 7.1 12:00 4.0 11.6 7.3 13:00 4.3 11.5 6.9 14:00 4.0 12.4 8.1 15:00 4.0 12.2 8.0 16:00 3.7 12.6 8.6 17:00 3.7 11.1 7.2 18:00 4.2 13.5 9.1 19:00 5.0 11.5 6.4 20:00 9.5 17.8 8.3 21:00 7.6 16.6 8.9 22:00 7.8 17.1 9.2 23:00 10.9 22.0 11.1 Average 6.1 15.2 9.0 Max 10.9 22.0 12.9 Max Hour 23:00 23:00 05:00 Min 3.6 11.0 6.4 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.15% Date Printed: 5/9/2026 01:30 Daily Summary Report Site: Union Cross 5/8/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .004 734.7 48.9 48.3 01:00 .003 734.7 47.9 47.4 02:00 .005 734.9 46.9 46.0 03:00 .007 735.2 45.9 44.6 04:00 .008 735.6 44.6 43.2 05:00 .004 736.0 43.9 42.8 06:00 .007 736.6 47.7 40.9 07:00 .024 737.2 53.4 40.5 08:00 .039 737.4 56.6 38.4 09:00 .045 737.6 59.3 38.2 10:00 .045 737.5 61.3 37.7 11:00 .047 737.0 63.5 38.2 12:00 .054 736.4 65.4 39.2 13:00 .057 735.9 66.5 40.7 14:00 .059 735.4 67.9 42.1 15:00 .062 735.0 68.1 42.6 16:00 .061 734.6 67.9 42.4 17:00 .058 734.7 66.9 41.0 18:00 .050 734.7 64.7 40.9 19:00 .043 734.7 61.7 41.2 20:00 .041 735.1 60.0 41.2 21:00 .037 735.1 58.9 41.4 22:00 .039 C 734.9 58.7 41.4 23:00 C 734.9 57.9 41.9 Average .034 735.6 57.6 41.7 Max .062 737.6 68.1 48.3 Max Hour 15:00 09:00 15:00 00:00 Min .003 734.6 43.9 37.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 08-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 08-May-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