Date Printed: 5/5/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/4/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .029 4.8 8.8 4.0 01:00 .025 5.1 8.8 3.7 02:00 .020 5.3 9.0 3.6 03:00 .015 5.4 9.5 4.0 04:00 .012 5.6 9.2 3.5 05:00 .008 6.4 12.7 6.3 06:00 .008 6.3 14.2 7.8 07:00 .019 6.5 13.4 6.8 08:00 .034 6.5 13.8 7.3 09:00 .042 5.6 11.5 5.9 10:00 .051 5.0 11.7 6.7 11:00 .055 4.9 12.8 7.8 12:00 .056 5.7 19.9 14.1 13:00 .059 5.1 13.2 8.1 14:00 .063 5.3 12.5 7.2 15:00 .063 5.3 16.5 11.1 16:00 .068 5.4 17.6 12.1 17:00 .072 5.4 17.1 11.7 18:00 .078 6.6 19.5 12.8 19:00 .070 6.4 20.9 14.4 20:00 .063 7.4 26.6 19.2 21:00 .058 6.3 15.4 9.1 22:00 .052 C 6.1 14.2 8.1 23:00 C 6.2 11.9 5.6 Average .044 5.7 14.1 8.3 Max .078 7.4 26.6 19.2 Max Hour 18:00 20:00 20:00 20:00 Min .008 4.8 8.8 3.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-May-2026 22:50:00 23:20:00 0.002 0.0 0.00 PREC 04-May-2026 22:50:00 23:50:00 0.071 0.07 2.48% Date Printed: 5/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/4/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .026 .1 7.9 8.1 .1 01:00 .020 .2 8.3 8.6 .1 02:00 .017 .2 9.0 9.2 .0 03:00 .011 .3 10.4 10.8 .0 04:00 .008 .4 13.7 14.2 .0 05:00 .004 5.2 19.2 24.5 .1 06:00 .005 16.1 20.9 37.0 .3 07:00 .017 10.0 17.4 27.4 .3 08:00 .028 5.0 12.7 17.8 .2 09:00 .042 1.3 5.4 6.8 .1 10:00 .049 .4 2.6 3.0 .1 11:00 .051 .2 2.1 2.4 .1 12:00 .055 .2 2.0 2.3 .2 13:00 .056 .2 1.9 2.2 .2 14:00 .058 .2 2.4 2.6 .1 15:00 .061 .1 C 2.2 C 2.4 C .1 16:00 .063 C C C .2 17:00 .066 .1 C 2.9 C 3.1 C .2 18:00 .073 .0 4.1 4.2 .1 19:00 .062 .0 8.4 8.5 .2 C 20:00 .052 .1 10.3 10.5 C 21:00 .050 .1 6.4 6.5 .4 C 22:00 .048 C .1 4.6 4.7 .2 23:00 C .1 4.2 4.3 .3 Average .040 1.7 7.7 9.6 .1 Max .073 16.1 20.9 37.0 .4 Max Hour 18:00 06:00 06:00 06:00 21:00 Min .004 .0 1.9 2.2 .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 04-May-2026 15:46:00 16:11:00 66.9 70 -4.31% GPT-PS 04-May-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 04-May-2026 15:46:00 16:38:00 216.4 225 -3.79% GPT-PREC 04-May-2026 15:46:00 17:08:00 150.8 155 -2.66% NO2 GPT-PREC 04-May-2026 15:46:00 17:08:00 66 70 -5.63% NO2 Precision NO2_Diff PRECDIFF 04-May-2026 17:15:00 17:15:05 65.5 66.061 -.7% NOx NOx_Auto NO-PREC 04-May-2026 15:46:00 16:11:00 67.1 70 -4.06% Ozone O3_Auto ZERO 04-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-May-2026 22:50:00 23:50:00 0.068 0.07 -2.54% SO2 SO2_Auto ZERO 04-May-2026 19:46:00 20:11:00 0 0.0 .03 SPAN 04-May-2026 19:46:00 20:36:00 85 90 -5.55% PREC 04-May-2026 19:46:00 21:01:00 37.4 40 -6.26% Date Printed: 5/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/4/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.7 10.7 5.2 01:00 6.3 11.8 5.7 02:00 6.2 10.5 4.5 03:00 6.5 11.8 5.6 04:00 7.0 13.9 7.2 05:00 9.2 16.2 7.4 06:00 12.7 21.8 9.5 07:00 9.7 21.4 11.8 08:00 6.9 19.8 12.7 09:00 5.0 14.3 9.0 10:00 4.5 13.2 8.3 11:00 4.7 13.1 7.9 12:00 5.0 12.6 7.1 13:00 5.0 15.3 9.7 14:00 5.4 14.2 8.2 15:00 5.4 15.5 9.4 16:00 5.4 16.0 10.0 17:00 6.1 17.0 10.3 18:00 6.5 21.0 13.9 19:00 7.3 19.0 11.2 20:00 6.9 18.8 11.5 21:00 6.6 14.7 7.8 22:00 6.7 14.0 7.2 23:00 6.4 13.6 7.1 Average 6.5 15.4 8.6 Max 12.7 21.8 13.9 Max Hour 06:00 06:00 18:00 Min 4.5 10.5 4.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -6.26% Date Printed: 5/5/2026 01:30 Daily Summary Report Site: Union Cross 5/4/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 736.5 50.8 35.3 01:00 .031 736.3 47.5 35.7 02:00 .023 736.3 46.0 36.3 03:00 .020 736.3 47.4 36.6 04:00 .019 736.4 46.2 37.0 05:00 .011 736.4 46.0 37.7 06:00 .005 736.5 48.2 39.5 07:00 .026 736.5 53.3 40.9 08:00 .036 736.6 58.2 42.5 09:00 .045 736.6 64.1 43.3 10:00 .052 736.7 67.7 44.1 11:00 .054 736.1 69.8 46.1 12:00 .056 735.4 71.9 48.3 13:00 .057 735.1 74.0 49.9 14:00 .060 734.7 75.6 50.9 15:00 .064 734.2 76.4 51.1 16:00 .067 734.0 76.7 50.9 17:00 .072 734.0 76.0 49.9 18:00 .069 734.0 73.9 48.6 19:00 .063 734.3 70.1 45.7 20:00 .060 734.7 67.6 44.0 21:00 .054 734.9 65.9 43.0 22:00 .049 C 734.9 64.5 42.4 23:00 C 734.8 62.5 41.9 Average .044 735.5 62.5 43.4 Max .072 736.7 76.7 51.1 Max Hour 17:00 10:00 16:00 15:00 Min .005 734.0 46.0 35.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-May-2026 22:50:00 23:50:00 0.07 0.07 .14% 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