Date Printed: 6/16/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/15/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .019 3.1 15.6 12.4 01:00 .016 B 3.2 15.1 11.9 02:00 .021 3.0 11.6 8.6 03:00 .020 2.7 10.3 7.6 04:00 .030 2.3 10.4 8.1 05:00 .031 2.5 10.3 7.7 06:00 .034 2.9 8.5 5.5 07:00 .039 3.1 10.9 7.8 08:00 .040 3.1 10.3 7.2 09:00 .043 3.3 9.4 6.1 10:00 .046 3.2 10.4 7.1 11:00 .047 3.3 10.1 6.8 12:00 .048 3.7 10.0 6.2 13:00 .049 3.9 9.6 5.6 14:00 .048 4.3 12.2 7.8 15:00 .049 4.8 12.1 7.3 16:00 .049 4.7 11.4 6.7 17:00 .047 3.9 10.9 6.9 18:00 .047 B 3.8 10.4 6.6 19:00 .043 4.1 11.6 7.5 20:00 .036 4.4 11.3 6.8 21:00 .028 5.4 10.8 5.3 22:00 .025 C 5.7 10.9 5.2 23:00 C 6.2 11.4 5.2 Average .037 3.7 11.0 7.2 Max .049 6.2 15.6 12.4 Max Hour 16:00 23:00 00:00 00:00 Min .016 2.3 8.5 5.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-Jun-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 15-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.48% Date Printed: 6/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/15/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .2 2.0 2.3 -.4 01:00 .031 .1 2.8 3.0 -.5 02:00 .039 .1 2.5 2.6 -.5 03:00 .038 .1 2.3 2.4 -.5 04:00 .037 .1 2.8 2.9 -.5 05:00 .036 .2 4.1 4.3 -.5 06:00 .040 B B B -.5 07:00 .043 B B B -.5 08:00 .045 B B B -.5 09:00 .047 B B B -.5 10:00 .049 B B B -.5 11:00 .050 B B B -.5 12:00 .052 B B B -.5 13:00 .051 .1 1.3 1.5 -.5 14:00 .051 .2 1.5 1.7 -.5 15:00 .051 .2 C 1.5 C 1.7 C -.5 16:00 .051 C C C -.5 17:00 .050 .2 C 1.6 C 1.8 C -.4 18:00 .049 .1 2.2 2.3 -.5 19:00 .047 .0 3.0 3.1 -.5 C 20:00 .041 .0 5.2 5.3 C 21:00 .036 .0 5.9 6.0 -.4 C 22:00 .031 C .1 7.1 7.2 -.5 23:00 C .1 4.1 4.2 -.5 Average .043 .1 3.1 3.2 -.4 Max .052 .2 7.1 7.2 -.4 Max Hour 12:00 17:00 22:00 22:00 21:00 Min .031 .0 1.3 1.5 -.5 Count 23 16 16 16 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 15-Jun-2026 15:46:00 16:11:00 66.8 70 -4.54% GPT-PS 15-Jun-2026 15:46:00 16:18:00 0.3 0.0 .37 GPTZ 15-Jun-2026 15:46:00 16:38:00 214.9 225 -4.48% GPT-PREC 15-Jun-2026 15:46:00 17:08:00 149.9 155 -3.28% NO2 GPT-PREC 15-Jun-2026 15:46:00 17:08:00 65.6 70 -6.24% NO2 Precision NO2_Diff PRECDIFF 15-Jun-2026 17:15:00 17:15:05 64.9 65.631 -.98% NOx NOx_Auto NO-PREC 15-Jun-2026 15:46:00 16:11:00 66.9 70 -4.39% Ozone O3_Auto ZERO 15-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Jun-2026 22:50:00 23:50:00 0.068 0.07 -3.01% SO2 SO2_Auto ZERO 15-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.63 SPAN 15-Jun-2026 19:46:00 20:36:00 87.8 90 -2.4% PREC 15-Jun-2026 19:46:00 21:01:00 38.4 40 -3.93% Date Printed: 6/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/15/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.6 11.0 7.0 01:00 3.6 10.6 6.6 02:00 2.9 12.0 8.7 03:00 2.7 9.8 6.8 04:00 2.5 11.6 8.7 05:00 3.0 12.7 9.4 06:00 3.2 14.4 10.8 07:00 3.1 13.6 10.1 08:00 3.0 13.9 10.5 09:00 3.1 P 12.7 P 9.0 P 10:00 3.3 11.5 7.7 11:00 3.7 14.6 10.3 12:00 4.1 13.2 8.5 13:00 4.1 11.8 7.2 14:00 4.3 13.1 8.1 15:00 4.6 14.4 9.1 16:00 4.7 12.7 7.4 17:00 4.7 14.3 9.0 18:00 6.9 16.0 8.3 19:00 8.2 21.8 12.8 20:00 7.5 18.7 10.6 21:00 7.8 15.9 7.7 22:00 9.4 22.2 12.4 23:00 6.0 13.9 7.6 Average 4.5 14.0 8.9 Max 9.4 22.2 12.8 Max Hour 22:00 22:00 19:00 Min 2.5 9.8 6.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.93% Date Printed: 6/16/2026 01:30 Daily Summary Report Site: Union Cross 6/15/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .030 731.2 73.1 69.5 01:00 .026 730.9 72.4 69.0 02:00 .035 730.9 72.8 64.8 03:00 .040 730.9 72.8 62.5 04:00 .040 731.4 71.8 61.1 05:00 .039 732.1 70.3 59.0 06:00 .040 732.7 69.8 57.0 07:00 .044 733.2 69.9 53.6 08:00 .045 733.5 71.5 53.5 09:00 .047 733.8 72.9 53.6 10:00 .050 734.1 74.5 53.7 11:00 .051 734.0 75.8 54.5 12:00 .053 733.8 76.7 55.2 13:00 .054 733.4 78.2 55.7 14:00 .053 733.1 79.7 56.1 15:00 .053 732.8 80.5 56.8 16:00 .052 732.6 80.8 57.5 17:00 .053 732.6 81.4 58.1 18:00 .051 732.8 80.5 57.7 19:00 .048 733.2 77.9 56.7 20:00 .040 733.6 74.0 55.3 21:00 .034 734.0 70.9 54.5 22:00 .027 C 734.1 67.7 54.2 23:00 C 734.1 68.3 53.4 Average .043 732.8 74.3 57.6 Max .054 734.1 81.4 69.5 Max Hour 13:00 23:00 17:00 00:00 Min .026 730.9 67.7 53.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Jun-2026 22:50:00 23:50:00 0.07 0.07 .1% 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