Date Printed: 6/2/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/1/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .032 5.8 12.6 6.8 01:00 .030 5.6 12.9 7.2 02:00 .031 5.9 14.6 8.6 03:00 .031 5.9 15.0 9.1 04:00 .029 5.9 14.5 8.5 05:00 .023 5.6 13.0 7.3 06:00 .023 6.0 14.6 8.5 07:00 .031 6.2 14.2 7.9 08:00 .034 6.0 13.2 7.2 09:00 .038 6.6 13.6 6.9 10:00 .041 7.4 14.8 7.4 11:00 .042 7.3 14.7 7.3 12:00 .045 B 6.8 13.3 6.4 13:00 .047 7.1 14.4 7.3 14:00 .046 6.4 16.6 10.1 15:00 .050 6.6 12.9 6.2 16:00 .054 7.1 13.2 6.1 17:00 .057 7.3 14.6 7.3 18:00 .051 6.1 12.5 6.4 19:00 .049 5.1 11.0 5.9 20:00 .039 11.6 23.1 11.4 21:00 .039 6.7 13.2 6.5 22:00 .038 C 6.8 13.4 6.6 23:00 C 5.7 12.0 6.3 Average .039 6.5 14.0 7.4 Max .057 11.6 23.1 11.4 Max Hour 17:00 20:00 20:00 20:00 Min .023 5.1 11.0 5.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.5% Date Printed: 6/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/1/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .033 .1 3.1 3.3 -.4 01:00 .033 .1 3.1 3.3 -.4 02:00 .032 .1 2.7 2.9 -.4 03:00 .032 .1 2.4 2.6 -.4 04:00 .031 .1 2.7 2.9 -.4 05:00 .026 .2 4.4 4.7 -.4 06:00 .025 .7 5.1 5.9 -.4 07:00 .032 .6 2.9 3.6 -.4 08:00 .036 .6 2.8 3.5 -.4 09:00 .040 .5 2.7 3.2 -.4 10:00 .046 .2 2.0 2.3 -.4 11:00 .045 .1 1.6 1.8 -.4 12:00 .047 .1 1.6 1.7 -.3 13:00 .048 .2 1.8 2.0 -.1 14:00 .048 .6 4.3 4.9 .5 15:00 .047 2.1 C 9.1 C 11.3 C 1.7 16:00 .057 C C C 1.0 17:00 .054 .5 C 5.4 C 5.9 C .9 18:00 .053 .1 2.4 2.6 .0 19:00 .048 .1 4.8 4.9 -.1 C 20:00 .046 .1 4.9 5.1 C 21:00 .046 .1 3.6 3.7 -.1 C 22:00 .046 C .0 3.3 3.4 .1 23:00 C .0 3.3 3.4 .0 Average .041 .3 3.4 3.8 .0 Max .057 2.1 9.1 11.3 1.7 Max Hour 16:00 15:00 15:00 15:00 15:00 Min .025 .0 1.6 1.7 -.4 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 01-Jun-2026 15:46:00 16:11:00 66.4 70 -5.08% GPT-PS 01-Jun-2026 15:46:00 16:18:00 0.5 0.0 .5 GPTZ 01-Jun-2026 15:46:00 16:38:00 215.3 225 -4.3% GPT-PREC 01-Jun-2026 15:46:00 17:08:00 150.2 155 -3.07% NO2 GPT-PREC 01-Jun-2026 15:46:00 17:08:00 65.4 70 -6.54% NO2 Precision NO2_Diff PRECDIFF 01-Jun-2026 17:15:00 17:15:05 65 65.419 -.52% NOx NOx_Auto NO-PREC 01-Jun-2026 15:46:00 16:11:00 66.5 70 -4.88% Ozone O3_Auto ZERO 01-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.24% SO2 SO2_Auto ZERO 01-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.64 SPAN 01-Jun-2026 19:46:00 20:36:00 88.2 90 -2% PREC 01-Jun-2026 19:46:00 21:01:00 38.5 40 -3.61% Date Printed: 6/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/1/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.0 16.4 10.1 01:00 6.0 13.3 7.0 02:00 6.2 14.9 8.4 03:00 6.4 16.9 10.2 04:00 6.1 15.3 8.9 05:00 6.0 15.3 9.1 06:00 6.6 16.5 9.6 07:00 7.2 18.7 11.0 08:00 7.1 18.9 11.2 09:00 8.1 17.3 8.5 10:00 8.2 19.4 10.5 11:00 7.9 16.1 7.6 12:00 7.5 15.3 7.1 13:00 6.5 15.8 8.7 14:00 7.5 17.0 8.9 15:00 7.5 17.2 9.0 16:00 7.9 16.4 7.9 17:00 6.5 16.7 9.6 18:00 4.8 15.0 9.7 19:00 5.2 14.9 9.3 20:00 6.2 15.9 9.3 21:00 7.3 16.2 8.6 22:00 5.9 14.6 8.4 23:00 5.9 P 13.5 P 7.4 P Average 6.6 16.1 9.0 Max 8.2 19.4 11.2 Max Hour 10:00 10:00 08:00 Min 4.8 13.3 7.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.61% Date Printed: 6/2/2026 01:30 Daily Summary Report Site: Union Cross 6/1/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 736.0 67.6 57.4 01:00 .036 735.5 67.0 58.0 02:00 .035 735.0 66.5 57.9 03:00 .033 734.9 65.9 58.1 04:00 .033 734.6 66.0 58.7 05:00 .031 734.8 65.6 59.2 06:00 .028 735.0 65.8 59.7 07:00 .031 735.0 68.4 60.8 08:00 .036 735.1 71.1 61.7 09:00 .043 735.0 74.9 62.5 10:00 .048 735.0 76.7 61.5 11:00 .046 735.1 77.4 61.1 12:00 .047 734.8 77.0 60.5 13:00 .049 734.7 77.9 59.4 14:00 .045 734.7 77.5 57.2 15:00 .050 734.5 77.2 58.5 16:00 .056 734.6 76.5 57.6 17:00 .055 734.7 76.7 56.3 18:00 .053 734.8 75.9 53.7 19:00 .048 735.0 73.6 53.7 20:00 .046 735.1 72.1 54.3 21:00 .046 736.1 71.0 54.1 22:00 .047 C 736.4 70.0 51.8 23:00 C 736.5 68.1 50.2 Average .042 735.1 71.9 57.6 Max .056 736.5 77.9 62.5 Max Hour 16:00 23:00 13:00 09:00 Min .028 734.5 65.6 50.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Jun-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