Date Printed: 6/26/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/25/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .010 5.5 11.1 5.6 01:00 .004 B 5.3 10.6 5.2 02:00 .003 5.5 10.8 5.2 03:00 .001 5.4 9.3 3.8 04:00 .000 5.5 10.3 4.7 05:00 .000 5.4 9.9 4.5 06:00 .001 7.3 43.4 36.0 07:00 .005 6.5 14.1 7.5 08:00 .022 8.5 15.8 7.2 09:00 .043 8.5 17.7 9.1 10:00 .060 7.9 16.7 8.7 11:00 .066 7.6 16.4 8.7 12:00 .066 7.0 13.9 6.8 13:00 .066 7.5 15.2 7.7 14:00 .068 7.8 14.4 6.5 15:00 .063 8.4 14.3 5.8 16:00 .068 8.8 15.9 7.1 17:00 .064 8.5 15.0 6.5 18:00 .061 B 9.6 25.6 16.0 19:00 .063 10.3 19.0 8.7 20:00 .058 11.3 24.8 13.5 21:00 .051 11.2 19.9 8.6 22:00 .043 C 10.9 18.7 7.8 23:00 C 12.2 19.5 7.2 Average .038 8.0 16.7 8.6 Max .068 12.2 43.4 36.0 Max Hour 16:00 23:00 06:00 06:00 Min .000 5.3 9.3 3.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 25-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.29% Date Printed: 6/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/25/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .007 1.7 12.4 14.2 -.5 01:00 .008 1.5 14.4 15.9 -.5 02:00 .005 2.6 16.8 19.4 -.5 03:00 .003 3.2 15.4 18.6 -.5 04:00 .003 2.9 10.8 13.7 -.5 05:00 .006 2.9 10.6 13.5 -.5 06:00 .007 6.0 9.9 16.0 -.4 07:00 .010 14.2 16.7 30.9 .0 08:00 .031 5.7 13.7 19.5 .0 09:00 .053 .8 5.4 6.2 -.1 10:00 .063 .4 3.8 4.2 -.2 11:00 .070 .2 3.0 3.3 -.3 12:00 .069 .2 2.8 3.0 -.4 13:00 .069 .2 2.8 3.0 -.4 14:00 .071 .2 2.7 2.9 -.4 15:00 .072 .2 C 2.7 C 2.9 C -.4 16:00 .070 C C C -.4 17:00 .068 .2 C 3.2 C 3.5 C -.4 18:00 .070 .1 3.6 3.8 -.3 19:00 .070 .1 5.6 5.7 -.2 C 20:00 .062 .1 9.1 9.2 C 21:00 .055 .1 8.6 8.7 -.4 C 22:00 .050 C .1 8.6 8.8 -.5 23:00 C .1 7.5 7.7 -.5 Average .043 1.9 8.2 10.2 -.3 Max .072 14.2 16.8 30.9 .0 Max Hour 15:00 07:00 02:00 07:00 08:00 Min .003 .1 2.7 2.9 -.5 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 25-Jun-2026 15:46:00 16:11:00 66.3 70 -5.28% GPT-PS 25-Jun-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 25-Jun-2026 15:46:00 16:38:00 214.5 225 -4.66% GPT-PREC 25-Jun-2026 15:46:00 17:08:00 149.8 155 -3.34% NO2 GPT-PREC 25-Jun-2026 15:46:00 17:08:00 65.3 70 -6.62% NO2 Precision NO2_Diff PRECDIFF 25-Jun-2026 17:15:00 17:15:05 64.6 65.364 -1.04% NOx NOx_Auto NO-PREC 25-Jun-2026 15:46:00 16:11:00 66.5 70 -4.87% Ozone O3_Auto ZERO 25-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.92% SO2 SO2_Auto ZERO 25-Jun-2026 19:46:00 20:11:00 -0.7 0.0 -.72 SPAN 25-Jun-2026 19:46:00 20:36:00 86.8 90 -3.55% PREC 25-Jun-2026 19:46:00 21:01:00 37.9 40 -5.05% Date Printed: 6/26/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/25/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.7 14.7 7.9 01:00 7.3 16.2 8.8 02:00 7.5 18.5 10.9 03:00 7.5 16.5 8.9 04:00 7.3 14.4 7.0 05:00 7.4 15.1 7.6 06:00 7.6 14.4 6.7 07:00 10.0 23.4 12.9 08:00 9.3 20.4 10.5 09:00 7.5 14.8 6.7 10:00 7.3 15.6 7.5 11:00 7.8 16.6 8.1 12:00 7.9 18.0 9.3 13:00 7.7 16.3 7.9 14:00 7.7 16.1 7.6 15:00 8.0 14.8 6.1 16:00 8.6 17.1 7.6 17:00 8.8 16.8 7.2 18:00 9.4 19.2 8.9 19:00 10.5 21.8 10.5 20:00 11.5 23.2 10.9 21:00 12.7 22.3 9.0 22:00 11.6 20.5 8.4 23:00 11.8 19.5 7.2 Average 8.7 17.7 8.5 Max 12.7 23.4 12.9 Max Hour 21:00 07:00 07:00 Min 6.7 14.4 6.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.05% Date Printed: 6/26/2026 01:30 Daily Summary Report Site: Union Cross 6/25/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .019 737.8 64.0 52.1 01:00 .023 737.4 64.9 51.6 02:00 .007 737.3 61.4 54.1 03:00 .014 737.3 61.1 53.3 04:00 .012 737.5 60.0 53.6 05:00 .011 737.8 60.7 52.7 06:00 .009 737.9 64.5 55.4 07:00 .028 738.2 69.4 57.3 08:00 .045 738.3 75.4 58.2 09:00 .052 738.7 77.7 59.0 10:00 .060 739.3 79.4 59.0 11:00 .062 738.9 80.8 59.6 12:00 .064 738.5 82.0 60.1 13:00 .069 738.1 83.1 60.0 14:00 .066 737.7 84.1 60.7 15:00 .064 737.5 84.9 61.6 16:00 .069 737.4 85.7 62.4 17:00 .076 737.2 84.7 62.5 18:00 .077 737.2 83.4 62.3 19:00 .068 737.3 80.9 62.3 20:00 .061 737.5 77.4 61.6 21:00 .057 737.9 75.7 61.0 22:00 .051 C 738.2 73.8 60.7 23:00 C 738.3 73.6 60.6 Average .046 737.8 74.5 58.4 Max .077 739.3 85.7 62.5 Max Hour 18:00 10:00 16:00 17:00 Min .007 737.2 60.0 51.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 25-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 25-Jun-2026 22:50:00 23:50:00 0.07 0.07 .59% 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