Date Printed: 6/8/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/7/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .034 12.9 19.0 6.0 01:00 .030 12.4 17.5 5.1 02:00 .024 12.8 18.5 5.6 03:00 .019 B 13.5 18.5 5.0 04:00 .019 13.8 20.0 6.2 05:00 .014 13.6 19.1 5.4 06:00 .018 19.1 25.8 6.6 07:00 .028 15.1 20.7 5.6 08:00 .043 15.4 22.2 6.7 09:00 .048 14.5 20.8 6.2 10:00 .050 14.0 19.8 5.8 11:00 .051 13.2 20.1 6.8 12:00 .051 13.0 19.3 6.3 13:00 .052 B 13.7 19.5 5.8 14:00 .052 13.3 18.4 5.0 15:00 .051 12.3 17.7 5.3 16:00 .053 13.3 20.4 7.1 17:00 .054 14.3 23.8 9.5 18:00 .055 14.3 21.5 7.1 19:00 .051 14.9 26.1 11.1 20:00 .047 B 14.0 20.9 6.9 21:00 .039 14.2 21.1 6.9 22:00 .036 C 15.0 21.2 6.1 23:00 C 15.5 21.5 5.9 Average .039 14.0 20.5 6.4 Max .055 19.1 26.1 11.1 Max Hour 18:00 06:00 19:00 19:00 Min .014 12.3 17.5 5.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 07-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.47% Date Printed: 6/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/7/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .039 .1 4.5 4.6 -.3 01:00 .031 .2 8.1 8.4 .0 02:00 .036 .2 4.5 4.7 -.2 03:00 .035 .2 4.7 4.9 -.3 04:00 .029 .3 5.5 5.9 -.4 05:00 .024 .4 6.2 6.7 -.4 06:00 .027 .7 5.5 6.2 -.4 07:00 .039 .4 3.6 4.0 -.4 08:00 .045 .3 2.2 2.6 -.4 09:00 .049 .2 1.6 1.8 -.4 10:00 .052 .1 1.3 1.5 -.4 11:00 .053 .1 1.4 1.6 -.4 12:00 .053 .2 1.7 2.0 -.4 13:00 .055 .1 1.6 1.7 -.4 14:00 .054 .1 1.7 1.8 -.4 15:00 .053 .1 C 1.7 C 1.9 C -.4 16:00 .052 C C C -.4 17:00 .054 .1 C 2.2 C 2.3 C -.4 18:00 .054 .1 3.1 3.2 -.4 19:00 .051 .0 4.1 4.2 -.4 C 20:00 .047 .0 5.4 5.5 C 21:00 .045 .0 5.5 5.6 -.4 C 22:00 .043 C .1 5.8 6.0 -.3 23:00 C .1 4.9 5.0 -.4 Average .044 .1 3.7 4.0 -.3 Max .055 .7 8.1 8.4 .0 Max Hour 13:00 06:00 01:00 01:00 01:00 Min .024 .0 1.3 1.5 -.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 07-Jun-2026 15:46:00 16:11:00 66.4 70 -5.08% GPT-PS 07-Jun-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 07-Jun-2026 15:46:00 16:38:00 215.2 225 -4.35% GPT-PREC 07-Jun-2026 15:46:00 17:08:00 151.1 155 -2.5% NO2 GPT-PREC 07-Jun-2026 15:46:00 17:08:00 64.7 70 -7.55% NO2 Precision NO2_Diff PRECDIFF 07-Jun-2026 17:15:00 17:15:05 64 64.718 -.97% NOx NOx_Auto NO-PREC 07-Jun-2026 15:46:00 16:11:00 66.7 70 -4.64% Ozone O3_Auto ZERO 07-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.9% SO2 SO2_Auto ZERO 07-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.69 SPAN 07-Jun-2026 19:46:00 20:36:00 87.8 90 -2.38% PREC 07-Jun-2026 19:46:00 21:01:00 38.5 40 -3.66% Date Printed: 6/8/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/7/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average Max Max Hour Min Count 0 0 0 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.66% Date Printed: 6/8/2026 01:30 Daily Summary Report Site: Union Cross 6/7/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .042 735.8 71.6 61.0 01:00 .036 735.7 69.3 60.7 02:00 .035 735.5 68.7 61.0 03:00 .034 735.7 68.0 61.1 04:00 .032 735.8 66.9 61.1 05:00 .029 736.1 66.7 61.2 06:00 .028 736.4 68.1 61.8 07:00 .035 736.6 72.9 63.0 08:00 .046 736.8 77.3 64.1 09:00 .051 736.6 81.6 64.0 10:00 .054 736.5 83.7 64.1 11:00 .055 736.3 85.2 64.5 12:00 .056 735.9 86.4 65.1 13:00 .054 735.5 86.0 66.4 14:00 .055 735.1 86.6 66.5 15:00 .055 734.8 88.0 66.9 16:00 .054 734.7 88.5 65.8 17:00 .057 734.7 87.1 65.9 18:00 .061 734.9 84.0 65.0 19:00 .059 735.2 80.9 63.7 20:00 .054 735.7 78.3 62.3 21:00 .049 736.4 76.5 61.8 22:00 .047 C 736.7 75.4 62.2 23:00 C 736.8 74.1 63.0 Average .046 735.8 77.9 63.4 Max .061 736.8 88.5 66.9 Max Hour 18:00 23:00 16:00 15:00 Min .028 734.7 66.7 60.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 07-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 07-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.03% 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