Date Printed: 5/29/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/28/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .003 5.4 17.3 11.8 01:00 .004 6.4 18.3 11.9 02:00 .004 5.5 18.5 12.9 03:00 .004 5.7 19.3 13.6 04:00 .002 5.5 19.2 13.7 05:00 .001 5.3 17.0 11.5 06:00 .002 4.5 13.4 8.9 07:00 .009 4.6 11.2 6.5 08:00 .027 4.5 11.5 6.9 09:00 .037 B 4.8 10.1 5.3 10:00 .040 4.6 10.6 5.9 11:00 .043 5.0 10.4 5.4 12:00 .045 5.3 11.6 6.3 13:00 .049 5.6 11.4 5.8 14:00 .050 5.8 13.1 7.2 15:00 .051 6.4 14.0 7.5 16:00 .055 6.6 13.3 6.7 17:00 .057 6.6 14.5 7.9 18:00 .052 6.7 14.9 8.1 19:00 .047 6.8 15.8 9.0 20:00 .040 7.0 15.2 8.2 21:00 .045 6.5 13.1 6.5 22:00 .045 C 6.1 12.3 6.2 23:00 C 6.5 13.2 6.6 Average .030 5.7 14.1 8.3 Max .057 7.0 19.3 13.7 Max Hour 17:00 20:00 03:00 04:00 Min .001 4.5 10.1 5.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-May-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 28-May-2026 22:50:00 23:50:00 0.068 0.07 -2.72% Date Printed: 5/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/28/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .016 .2 3.9 4.1 -.4 01:00 .012 .3 4.0 4.4 -.4 02:00 .008 .5 5.1 5.6 -.4 03:00 .007 .5 4.5 5.0 -.4 04:00 .005 .8 4.7 5.5 -.4 05:00 .004 2.1 6.8 9.0 -.4 06:00 .009 2.4 7.0 9.4 -.4 07:00 .016 4.2 8.6 12.7 -.3 08:00 .030 3.2 5.5 8.8 -.3 09:00 .038 .6 2.1 2.7 -.4 10:00 .039 .4 2.0 2.4 -.4 11:00 .045 .2 1.0 1.2 -.4 12:00 .050 .1 1.0 1.2 -.4 13:00 .054 .1 1.0 1.1 -.4 14:00 .054 .1 1.2 1.3 -.4 15:00 .055 .1 C 1.2 C 1.4 C -.4 16:00 .058 C C C -.4 17:00 .059 .2 C 2.2 C 2.5 C -.4 18:00 .056 .1 2.4 2.5 -.4 19:00 .051 .0 3.1 3.2 -.4 C 20:00 .047 .1 3.7 3.8 C 21:00 .047 .0 2.3 2.4 -.4 C 22:00 .045 C .0 2.6 2.7 -.4 23:00 C .1 3.3 3.4 -.4 Average .035 .7 3.4 4.1 -.3 Max .059 4.2 8.6 12.7 -.3 Max Hour 17:00 07:00 07:00 07:00 08:00 Min .004 .0 1.0 1.1 -.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 28-May-2026 15:46:00 16:11:00 66.6 70 -4.73% GPT-PS 28-May-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 28-May-2026 15:46:00 16:38:00 215.8 225 -4.05% GPT-PREC 28-May-2026 15:46:00 17:08:00 150.5 155 -2.88% NO2 GPT-PREC 28-May-2026 15:46:00 17:08:00 65.6 70 -6.26% NO2 Precision NO2_Diff PRECDIFF 28-May-2026 17:15:00 17:15:05 65.3 65.615 -.39% NOx NOx_Auto NO-PREC 28-May-2026 15:46:00 16:11:00 66.7 70 -4.66% Ozone O3_Auto ZERO 28-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-May-2026 22:50:00 23:50:00 0.067 0.07 -3.13% SO2 SO2_Auto ZERO 28-May-2026 19:46:00 20:11:00 -0.6 0.0 -.62 SPAN 28-May-2026 19:46:00 20:36:00 88.1 90 -2.07% PREC 28-May-2026 19:46:00 21:01:00 38.7 40 -3.11% Date Printed: 5/29/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/28/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.8 20.4 14.1 01:00 6.1 19.5 12.9 02:00 6.2 20.9 14.2 03:00 6.4 21.4 14.5 04:00 6.3 20.2 13.5 05:00 5.9 16.7 10.5 06:00 6.1 15.2 8.6 07:00 6.2 17.2 10.3 08:00 8.1 32.7 23.2 09:00 5.4 13.2 7.1 10:00 5.3 13.8 7.9 11:00 5.7 12.6 6.3 12:00 5.7 12.8 6.5 13:00 6.3 15.3 8.1 14:00 6.7 16.7 9.1 15:00 6.9 16.1 8.3 16:00 7.0 16.5 8.6 17:00 6.9 16.7 8.9 18:00 6.7 15.1 7.7 19:00 7.2 14.7 6.9 20:00 7.6 15.0 6.9 21:00 7.1 14.5 7.0 22:00 7.0 14.5 7.2 23:00 7.6 16.3 8.3 Average 6.5 17.0 9.8 Max 8.1 32.7 23.2 Max Hour 08:00 08:00 08:00 Min 5.3 12.6 6.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.11% Date Printed: 5/29/2026 01:30 Daily Summary Report Site: Union Cross 5/28/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .009 735.1 69.4 68.9 01:00 .012 734.7 69.3 68.9 02:00 .011 734.6 68.9 68.5 03:00 .008 734.5 68.5 68.3 04:00 .005 734.6 68.2 68.1 05:00 .005 734.9 68.4 68.3 06:00 .008 735.1 70.1 68.7 07:00 .019 735.4 73.4 67.4 08:00 .035 735.7 76.9 65.8 09:00 .041 735.7 78.7 65.2 10:00 .041 735.9 79.6 65.7 11:00 .045 735.8 80.4 64.3 12:00 .051 735.5 82.0 64.4 13:00 .054 735.1 83.7 64.6 14:00 .054 734.6 84.7 64.0 15:00 .055 734.4 85.1 64.0 16:00 .056 734.2 85.2 64.0 17:00 .059 734.3 84.9 62.2 18:00 .056 734.7 83.7 61.7 19:00 .052 735.4 80.8 60.1 20:00 .046 735.8 77.3 58.6 21:00 .041 736.4 74.4 57.3 22:00 .041 C 736.7 72.6 56.1 23:00 C 736.8 71.6 55.2 Average .034 735.2 76.5 64.1 Max .059 736.8 85.2 68.9 Max Hour 17:00 23:00 16:00 01:00 Min .005 734.2 68.2 55.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 28-May-2026 22:50:00 23:50:00 0.069 0.07 -.02% 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