Date Printed: 7/18/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/17/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .016 16.4 24.1 7.6 01:00 .014 16.6 23.1 6.5 02:00 .012 17.0 24.2 7.1 03:00 .010 16.3 22.3 6.0 04:00 .010 15.5 23.2 7.7 05:00 .008 15.4 22.9 7.4 06:00 .012 14.7 21.8 7.1 07:00 .021 15.0 21.9 6.8 08:00 .041 17.0 24.0 6.9 09:00 .055 18.0 26.1 8.0 10:00 .071 19.1 28.2 9.1 11:00 .081 18.9 27.5 8.5 12:00 .087 19.4 26.9 7.5 13:00 .080 18.3 31.7 13.3 14:00 .080 17.5 23.6 6.0 15:00 .066 15.6 22.5 6.9 16:00 .060 15.6 26.7 11.1 17:00 .059 15.7 22.6 6.8 18:00 .052 22.6 32.3 9.7 19:00 .050 29.3 41.8 12.4 20:00 .040 30.3 47.4 17.1 21:00 .033 32.2 53.0 20.8 22:00 .029 C 33.4 47.6 14.1 23:00 B 32.1 45.5 13.4 Average .042 20.0 29.6 9.4 Max .087 33.4 53.0 20.8 Max Hour 12:00 22:00 21:00 21:00 Min .008 14.7 21.8 6.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 17-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.47% Date Printed: 7/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/17/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .024 .4 10.5 10.9 .3 01:00 .023 .3 10.0 10.3 .2 02:00 .020 .3 9.8 10.1 .2 03:00 .023 .2 9.7 9.9 .1 04:00 .024 .2 9.6 9.9 .1 05:00 .015 1.1 11.8 12.9 .1 06:00 .014 4.3 13.2 17.6 .2 07:00 .039 .8 4.7 5.5 .2 08:00 .044 1.1 5.5 6.7 .4 09:00 .048 2.4 10.0 12.5 .9 10:00 .061 .3 3.4 3.8 .4 11:00 .065 .2 3.2 3.5 .4 12:00 .055 .1 1.5 1.7 .2 13:00 .060 .1 1.8 1.9 .2 14:00 .068 .1 2.3 2.4 .2 15:00 .064 .1 C 2.7 C 2.8 C .2 16:00 .058 C C C .2 17:00 .057 .2 C 3.2 C 3.4 C .3 18:00 .055 .1 3.6 3.8 .2 19:00 .049 .2 4.7 5.0 .2 C 20:00 .042 .2 6.4 6.6 C 21:00 .038 .2 7.8 8.1 .3 C 22:00 .039 C .2 7.1 7.3 .3 23:00 C .2 6.1 6.3 .3 Average .042 .5 6.4 7.0 .2 Max .068 4.3 13.2 17.6 .9 Max Hour 14:00 06:00 06:00 06:00 09:00 Min .014 .1 1.5 1.7 .1 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 17-Jul-2026 15:46:00 16:11:00 66 70 -5.68% GPT-PS 17-Jul-2026 15:46:00 16:18:00 0.5 0.0 .57 GPTZ 17-Jul-2026 15:46:00 16:38:00 213.4 225 -5.15% GPT-PREC 17-Jul-2026 15:46:00 17:08:00 148.9 155 -3.92% NO2 GPT-PREC 17-Jul-2026 15:46:00 17:08:00 65.3 70 -6.65% NO2 Precision NO2_Diff PRECDIFF 17-Jul-2026 17:15:00 17:15:05 64.4 65.343 -1.31% NOx NOx_Auto NO-PREC 17-Jul-2026 15:46:00 16:11:00 66.7 70 -4.6% Ozone O3_Auto ZERO 17-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.55% SO2 SO2_Auto ZERO 17-Jul-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 17-Jul-2026 19:46:00 20:36:00 90.3 90 .37% PREC 17-Jul-2026 19:46:00 21:01:00 40 40 .12% Date Printed: 7/18/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/17/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 19.8 27.3 6.7 01:00 20.4 29.5 8.2 02:00 19.5 27.7 7.3 03:00 19.0 26.6 6.9 04:00 19.7 27.5 7.1 05:00 19.7 27.8 7.4 06:00 20.0 32.2 11.1 07:00 20.0 29.1 8.0 08:00 19.7 26.3 5.4 09:00 20.2 P 31.2 P 9.4 P 10:00 19.8 29.4 7.9 11:00 19.9 29.3 7.7 12:00 17.3 24.0 5.2 13:00 17.5 26.7 7.4 14:00 17.5 26.9 7.7 15:00 18.6 29.8 9.4 16:00 19.5 29.0 7.8 17:00 22.5 32.4 8.2 18:00 28.4 42.0 11.4 19:00 27.5 40.8 11.4 20:00 29.6 43.5 12.1 21:00 33.7 49.9 14.2 22:00 37.4 53.4 13.9 23:00 42.2 61.1 16.6 Average 22.8 33.4 9.1 Max 42.2 61.1 16.6 Max Hour 23:00 23:00 23:00 Min 17.3 24.0 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .12% Date Printed: 7/18/2026 01:30 Daily Summary Report Site: Union Cross 7/17/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .015 736.7 76.7 69.9 01:00 .015 736.7 76.1 69.7 02:00 .017 736.9 76.5 69.6 03:00 .014 737.1 75.7 69.7 04:00 .016 737.4 74.2 69.4 05:00 .011 737.7 73.2 69.5 06:00 .014 737.9 75.7 69.8 07:00 .029 738.1 79.9 70.3 08:00 .037 738.2 83.3 71.1 09:00 .048 738.1 85.6 72.6 10:00 .054 738.1 88.3 73.7 11:00 .057 738.1 90.4 73.4 12:00 .060 737.8 91.3 73.2 13:00 .062 737.4 93.6 73.7 14:00 .062 737.0 92.8 73.9 15:00 .063 736.6 92.8 74.3 16:00 .065 736.4 93.7 74.9 17:00 .057 736.5 89.6 75.3 18:00 .055 736.5 87.7 73.8 19:00 .051 736.5 85.7 72.6 20:00 .044 736.6 83.8 72.1 21:00 .036 736.7 81.6 72.1 22:00 .027 C 736.8 80.7 72.3 23:00 C 737.3 80.4 72.6 Average .039 737.2 83.7 72.0 Max .065 738.2 93.7 75.3 Max Hour 16:00 08:00 16:00 17:00 Min .011 736.4 73.2 69.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Jul-2026 22:50:00 23:50:00 0.07 0.07 .31% 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