Date Printed: 7/2/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/1/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .029 11.1 17.3 6.2 01:00 .025 12.2 17.4 5.2 02:00 .026 12.3 17.8 5.4 03:00 .022 12.2 17.4 5.1 04:00 .025 12.1 17.5 5.4 05:00 .023 12.6 18.8 6.1 06:00 .023 13.1 29.5 16.4 07:00 .031 11.4 19.4 7.9 08:00 .044 11.2 19.4 8.2 09:00 .056 11.7 20.7 9.0 10:00 .055 11.9 20.2 8.2 11:00 .047 B 12.5 22.6 10.1 12:00 .049 B 13.8 26.7 12.8 13:00 .050 15.0 28.3 13.3 14:00 .046 14.7 29.9 15.2 15:00 .043 14.9 34.1 19.2 16:00 .047 15.1 30.3 15.1 17:00 .046 15.7 46.7 31.0 18:00 .043 14.2 31.1 16.8 19:00 .038 13.2 25.3 12.1 20:00 .031 13.9 35.0 21.0 21:00 .029 13.5 27.0 13.4 22:00 .022 C 13.6 24.7 11.0 23:00 C 13.7 25.9 12.2 Average .036 13.1 25.1 11.9 Max .056 15.7 46.7 31.0 Max Hour 09:00 17:00 17:00 17:00 Min .022 11.1 17.3 5.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 01-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.55% Date Printed: 7/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/1/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .039 .1 5.4 5.6 .0 01:00 .037 .1 5.9 6.1 .3 02:00 .035 .2 5.5 5.7 .0 03:00 .035 .2 4.8 5.0 -.2 04:00 .031 .2 5.4 5.7 -.2 05:00 .028 .4 6.8 7.2 -.1 06:00 .026 1.3 9.2 10.6 .0 07:00 .033 1.8 8.9 10.7 .0 08:00 .049 .8 5.6 6.4 .0 09:00 .061 .4 4.3 4.8 -.2 D 10:00 .049 .3 2.3 2.6 D 11:00 .044 .2 1.7 2.0 D 12:00 .042 .3 1.7 2.1 D 13:00 .042 .2 1.6 1.9 D 14:00 .041 .2 1.6 1.9 D 15:00 .039 .2 C 1.7 C 2.0 C .1 D 16:00 .039 C C C .2 17:00 .043 .2 C 2.3 C 2.6 C .3 18:00 .052 .1 3.7 3.8 .7 19:00 .053 .0 5.7 5.8 1.3 C 20:00 .040 .1 8.2 8.4 C 21:00 .039 .2 7.7 7.9 .5 C 22:00 .039 C .2 9.0 9.2 .8 23:00 C .3 9.2 9.5 .4 Average .040 .3 5.1 5.5 .2 Max .061 1.8 9.2 10.7 1.3 Max Hour 09:00 07:00 23:00 07:00 19:00 Min .026 .0 1.6 1.9 -.2 Count 23 23 23 23 18 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 01-Jul-2026 15:46:00 16:11:00 66.6 70 -4.78% GPT-PS 01-Jul-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 01-Jul-2026 15:46:00 16:38:00 214.1 225 -4.83% GPT-PREC 01-Jul-2026 15:46:00 17:08:00 149.9 155 -3.25% NO2 GPT-PREC 01-Jul-2026 15:46:00 17:08:00 64.8 70 -7.29% NO2 Precision NO2_Diff PRECDIFF 01-Jul-2026 17:15:00 17:15:05 64.1 64.897 -1.14% NOx NOx_Auto NO-PREC 01-Jul-2026 15:46:00 16:11:00 66.9 70 -4.39% Ozone O3_Auto ZERO 01-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.04% SO2 SO2_Auto ZERO 01-Jul-2026 19:46:00 20:11:00 0 0.0 -.03 SPAN 01-Jul-2026 19:46:00 20:36:00 90.9 90 1.09% PREC 01-Jul-2026 19:46:00 21:01:00 40.2 40 .67% Date Printed: 7/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/1/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 14.4 20.8 5.6 01:00 15.3 22.9 6.8 02:00 14.2 21.8 6.9 03:00 13.3 21.1 7.2 04:00 15.1 24.3 8.6 05:00 15.6 24.3 8.1 06:00 14.0 23.4 8.6 07:00 12.7 20.9 7.3 08:00 12.5 23.8 10.2 09:00 13.3 24.5 10.0 10:00 13.2 26.5 11.8 11:00 B B B 12:00 13.7 29.8 14.3 13:00 14.3 33.7 17.2 14:00 14.6 32.4 15.7 15:00 14.5 32.1 15.5 16:00 14.5 35.3 18.3 17:00 15.3 36.0 18.4 18:00 16.3 39.1 20.4 19:00 16.5 39.9 21.2 20:00 16.3 37.5 19.3 21:00 15.8 32.6 15.3 22:00 16.3 32.5 14.8 23:00 16.4 30.9 13.2 Average 14.7 28.9 12.8 Max 16.5 39.9 21.2 Max Hour 19:00 19:00 19:00 Min 12.5 20.8 5.6 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .67% Date Printed: 7/2/2026 01:30 Daily Summary Report Site: Union Cross 7/1/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 738.8 78.4 66.0 01:00 .038 738.7 76.9 65.1 02:00 .036 738.5 75.5 65.0 03:00 .032 738.5 74.1 64.9 04:00 .032 738.6 73.1 64.7 05:00 .030 738.8 72.6 65.5 06:00 .029 738.9 74.3 66.9 07:00 D 739.3 77.6 68.1 08:00 D 739.4 81.5 69.3 09:00 .063 739.2 85.1 71.2 10:00 .059 739.0 88.1 72.7 11:00 .051 738.9 90.2 72.5 12:00 .056 738.7 92.2 72.3 13:00 .062 738.3 93.7 72.7 14:00 .053 738.0 94.7 73.4 15:00 .041 737.7 95.8 73.1 16:00 .048 737.5 96.4 73.0 17:00 .064 737.3 96.6 72.8 18:00 .067 737.2 95.7 72.6 19:00 .053 737.2 91.8 73.6 20:00 .045 737.2 87.4 72.9 21:00 .039 737.5 85.4 71.8 22:00 .036 C 737.7 84.1 71.6 23:00 C 737.9 82.3 71.1 Average .046 738.2 85.1 70.1 Max .067 739.4 96.6 73.6 Max Hour 18:00 08:00 17:00 19:00 Min .029 737.2 72.6 64.7 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 01-Jul-2026 22:50:00 23:50:00 0.071 0.07 1.87% 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