Date Printed: 5/2/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/1/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .034 B 3.2 10.1 6.8 01:00 .029 3.3 8.6 5.2 02:00 .025 3.2 8.3 5.0 03:00 .024 3.1 7.7 4.5 04:00 .022 3.0 7.3 4.3 05:00 .016 3.1 7.4 4.3 06:00 .015 3.3 7.5 4.2 07:00 .029 3.6 11.0 7.4 08:00 .038 3.2 7.8 4.5 09:00 .040 3.2 7.8 4.6 10:00 .043 2.9 7.7 4.8 11:00 .046 3.1 8.4 5.2 12:00 .049 3.4 8.8 5.3 13:00 .051 3.5 9.9 6.3 14:00 .053 3.7 9.6 5.9 15:00 .052 4.1 10.5 6.3 16:00 .050 4.7 13.7 8.9 17:00 .049 5.0 12.9 7.9 18:00 .046 5.5 13.5 8.0 19:00 .043 5.3 14.6 9.3 20:00 .039 5.3 12.6 7.2 21:00 .036 5.6 11.2 5.6 22:00 .035 C 5.6 11.3 5.7 23:00 C 5.6 11.4 5.8 Average .037 3.9 9.9 5.9 Max .053 5.6 14.6 9.3 Max Hour 14:00 23:00 19:00 19:00 Min .015 2.9 7.3 4.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 01-May-2026 22:50:00 23:50:00 0.071 0.07 1.64% Date Printed: 5/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/1/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .039 .0 1.6 1.7 .0 01:00 .037 .0 1.6 1.7 .0 02:00 .036 .0 1.5 1.6 .0 03:00 .034 .0 2.6 2.7 .0 04:00 .033 .0 2.7 2.8 .0 05:00 .032 .1 3.5 3.7 .1 06:00 .031 .3 3.9 4.2 .1 07:00 .031 .6 3.8 4.5 .1 08:00 .036 .5 2.3 2.8 .1 09:00 .039 .8 2.7 3.5 .1 10:00 .043 .7 2.5 3.3 .1 11:00 .044 .6 2.2 2.8 .1 12:00 .048 .4 2.1 2.5 .1 13:00 .051 .3 2.1 2.5 .1 14:00 .051 .2 1.9 2.2 .1 15:00 .051 .2 C 2.0 C 2.2 C .1 16:00 .050 C C C .2 17:00 .046 .5 C 3.1 C 3.6 C .2 18:00 .043 .1 3.9 4.0 .2 19:00 .038 .1 4.7 4.8 .2 C 20:00 .036 .0 4.4 4.4 C 21:00 .034 .0 4.5 4.6 .2 C 22:00 .032 C .1 4.8 4.9 .2 23:00 C .1 5.6 5.8 .2 Average .039 .2 3.0 3.3 .1 Max .051 .8 5.6 5.8 .2 Max Hour 15:00 09:00 23:00 23:00 23:00 Min .031 .0 1.5 1.6 .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 01-May-2026 15:46:00 16:11:00 66.9 70 -4.32% GPT-PS 01-May-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 01-May-2026 15:46:00 16:38:00 216.2 225 -3.89% GPT-PREC 01-May-2026 15:46:00 17:08:00 151.6 155 -2.15% NO2 GPT-PREC 01-May-2026 15:46:00 17:08:00 65.5 70 -6.34% NO2 Precision NO2_Diff PRECDIFF 01-May-2026 17:15:00 17:15:05 64.5 65.562 -1.49% NOx NOx_Auto NO-PREC 01-May-2026 15:46:00 16:11:00 66.9 70 -4.34% Ozone O3_Auto ZERO 01-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-May-2026 22:50:00 23:50:00 0.068 0.07 -2.75% SO2 SO2_Auto ZERO 01-May-2026 19:46:00 20:11:00 0 0.0 .04 SPAN 01-May-2026 19:46:00 20:36:00 84.9 90 -5.66% PREC 01-May-2026 19:46:00 21:01:00 37.5 40 -6.03% Date Printed: 5/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/1/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.2 8.6 5.4 01:00 3.0 7.7 4.9 02:00 2.7 8.4 5.8 03:00 2.7 6.2 3.7 04:00 2.7 6.2 3.5 05:00 2.9 7.4 4.6 06:00 2.9 7.2 4.3 07:00 3.1 7.4 4.3 08:00 3.1 7.1 4.0 09:00 2.9 8.4 5.4 10:00 3.4 12.0 8.6 11:00 3.3 10.6 7.2 12:00 3.6 10.7 6.9 13:00 3.7 12.0 8.0 14:00 3.7 12.7 8.6 15:00 4.2 12.0 7.5 16:00 4.8 13.7 8.6 17:00 5.0 14.8 9.5 18:00 5.7 15.0 9.1 19:00 6.1 14.3 8.1 20:00 6.2 12.5 6.2 21:00 5.7 10.8 5.1 22:00 5.5 10.3 4.8 23:00 6.5 12.0 5.6 Average 4.0 10.3 6.2 Max 6.5 15.0 9.5 Max Hour 23:00 18:00 17:00 Min 2.7 6.2 3.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -6.03% Date Printed: 5/2/2026 01:30 Daily Summary Report Site: Union Cross 5/1/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .026 734.8 52.3 36.2 01:00 .028 735.0 51.2 35.8 02:00 .033 735.0 50.8 35.0 03:00 .035 735.1 50.4 34.5 04:00 .033 735.0 49.6 34.5 05:00 .032 735.3 49.5 34.9 06:00 .029 735.9 49.5 35.6 07:00 .029 735.8 50.5 36.4 08:00 .035 735.8 52.7 37.2 09:00 .039 736.0 55.1 37.7 10:00 .040 735.9 57.2 38.5 11:00 .043 735.5 59.1 39.6 12:00 .047 734.8 61.9 41.4 13:00 .048 734.4 64.1 42.7 14:00 .050 733.7 65.5 43.7 15:00 .050 732.9 66.4 45.6 16:00 .046 732.7 65.5 46.4 17:00 .044 732.6 64.0 46.1 18:00 .043 732.6 61.0 45.2 19:00 .039 733.0 57.9 46.0 20:00 .037 733.7 55.7 46.6 21:00 .035 733.8 54.1 45.9 22:00 .030 C 733.7 52.7 45.8 23:00 C 733.4 51.9 45.9 Average .037 734.4 56.1 40.7 Max .050 736.0 66.4 46.6 Max Hour 15:00 09:00 15:00 20:00 Min .026 732.6 49.5 34.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-May-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