Date Printed: 6/17/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/16/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .021 7.1 12.3 5.2 01:00 .020 6.8 11.3 4.5 02:00 .024 5.3 10.7 5.3 03:00 .023 5.0 9.8 4.8 04:00 .027 3.8 9.1 5.3 05:00 .021 3.8 9.2 5.3 06:00 .021 3.9 10.5 6.6 07:00 .034 3.3 10.0 6.6 08:00 .038 3.3 10.3 6.9 09:00 .043 3.5 9.9 6.3 10:00 .049 4.0 13.6 9.6 11:00 .051 B 4.4 14.5 10.1 12:00 .053 B 4.6 14.2 9.6 13:00 .054 5.2 18.6 13.2 14:00 .054 6.4 23.9 17.5 15:00 .053 6.2 16.0 9.8 16:00 .053 6.7 15.7 9.0 17:00 .054 7.0 21.2 14.2 18:00 .057 7.6 20.3 12.6 19:00 .058 8.0 19.4 11.4 20:00 .055 7.8 20.0 12.1 21:00 .047 7.9 19.6 11.7 22:00 .039 C 7.6 16.5 8.8 23:00 C 7.9 14.7 6.7 Average .041 5.7 14.6 8.8 Max .058 8.0 23.9 17.5 Max Hour 19:00 19:00 14:00 14:00 Min .020 3.3 9.1 4.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 16-Jun-2026 22:50:00 23:50:00 0.068 0.07 -3.03% Date Printed: 6/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/16/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .038 .1 2.5 2.6 -.5 01:00 .039 .1 2.2 2.3 -.5 02:00 .039 .0 1.7 1.8 -.5 03:00 .036 .0 3.0 3.1 -.4 04:00 .029 .1 6.3 6.4 -.3 05:00 .020 .4 14.6 15.1 -.1 06:00 .027 .5 7.2 7.7 -.3 07:00 .033 .4 3.3 3.8 -.4 08:00 .038 .6 2.9 3.5 -.3 09:00 .045 .2 1.8 2.0 -.4 10:00 .049 .2 1.8 2.1 -.4 11:00 .053 .1 1.7 1.9 -.4 12:00 .058 .1 2.1 2.3 -.4 13:00 .059 .2 2.3 2.5 -.3 14:00 .059 .2 2.2 2.4 -.4 15:00 .058 .1 C 2.1 C 2.3 C -.4 16:00 .056 C C C -.3 17:00 .056 .2 C 2.5 C 2.7 C -.3 18:00 .057 .1 2.8 2.9 -.3 19:00 .059 .0 3.8 3.9 -.4 C 20:00 .057 .1 5.3 5.4 C 21:00 .051 .1 4.4 4.5 -.3 C 22:00 .043 C .1 4.2 4.3 -.3 23:00 C .1 5.7 5.9 -.1 Average .046 .1 3.7 3.9 -.3 Max .059 .6 14.6 15.1 -.1 Max Hour 19:00 08:00 05:00 05:00 23:00 Min .020 .0 1.7 1.8 -.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 16-Jun-2026 15:46:00 16:11:00 66.3 70 -5.18% GPT-PS 16-Jun-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 16-Jun-2026 15:46:00 16:38:00 215.4 225 -4.26% GPT-PREC 16-Jun-2026 15:46:00 17:08:00 150.3 155 -3% NO2 GPT-PREC 16-Jun-2026 15:46:00 17:08:00 65.6 70 -6.23% NO2 Precision NO2_Diff PRECDIFF 16-Jun-2026 17:15:00 17:15:05 65 65.641 -.86% NOx NOx_Auto NO-PREC 16-Jun-2026 15:46:00 16:11:00 66.6 70 -4.8% Ozone O3_Auto ZERO 16-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.28% SO2 SO2_Auto ZERO 16-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.66 SPAN 16-Jun-2026 19:46:00 20:36:00 88 90 -2.19% PREC 16-Jun-2026 19:46:00 21:01:00 38.3 40 -4.02% Date Printed: 6/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/16/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.0 11.5 6.3 01:00 4.6 10.3 5.6 02:00 3.8 8.7 4.7 03:00 3.6 8.5 4.8 04:00 4.0 9.1 5.0 05:00 4.8 12.0 7.1 06:00 4.2 9.5 5.1 07:00 3.9 11.6 7.5 08:00 3.7 11.6 7.6 09:00 3.6 11.0 7.1 10:00 4.0 12.1 7.8 11:00 4.3 13.1 8.4 12:00 4.6 13.8 8.7 13:00 5.3 15.4 9.4 14:00 6.0 16.8 10.0 15:00 6.3 15.8 8.7 16:00 6.8 15.4 7.9 17:00 6.8 16.6 8.9 18:00 7.7 17.3 8.9 19:00 8.5 21.3 11.9 20:00 9.5 25.5 15.1 21:00 9.7 23.0 12.5 22:00 9.4 21.3 11.3 23:00 11.1 21.2 9.6 Average 5.8 14.6 8.3 Max 11.1 25.5 15.1 Max Hour 23:00 20:00 20:00 Min 3.6 8.5 4.7 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.02% Date Printed: 6/17/2026 01:30 Daily Summary Report Site: Union Cross 6/16/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 734.1 67.9 52.5 01:00 .040 734.1 67.2 51.2 02:00 .040 734.1 66.7 50.6 03:00 .038 734.0 66.2 50.2 04:00 .037 734.0 65.7 50.1 05:00 .037 734.4 65.9 50.3 06:00 .036 734.6 66.2 50.6 07:00 .038 734.7 67.2 51.0 08:00 .042 734.7 68.5 51.6 09:00 .045 734.6 71.0 52.7 10:00 .049 734.4 73.3 53.4 11:00 .053 733.9 74.7 54.0 12:00 .055 733.2 76.9 55.5 13:00 .057 732.5 78.5 56.6 14:00 .057 731.9 80.3 58.3 15:00 .057 731.5 80.9 58.8 16:00 .057 731.3 80.3 58.9 17:00 .057 731.3 80.3 59.4 18:00 .054 731.2 78.6 59.4 19:00 .056 731.4 76.2 58.4 20:00 .050 731.6 73.6 57.7 21:00 .048 732.0 71.7 58.3 22:00 .043 C 732.2 70.2 59.1 23:00 C 731.9 69.0 59.7 Average .047 733.0 72.3 54.9 Max .057 734.7 80.9 59.7 Max Hour 17:00 08:00 15:00 23:00 Min .035 731.2 65.7 50.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Jun-2026 22:50:00 23:50:00 0.07 0.07 .6% 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