Date Printed: 6/5/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/4/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 6.4 12.0 5.6 01:00 .015 6.2 10.5 4.3 02:00 .013 6.3 11.0 4.7 03:00 .010 6.5 11.5 4.9 04:00 .009 6.7 11.8 5.1 05:00 .006 7.1 12.1 5.0 06:00 .008 B 7.2 13.7 6.5 07:00 .018 7.6 15.3 7.7 08:00 .031 B B B 09:00 .045 6.5 B 12.9 B 6.4 B 10:00 .051 5.4 13.3 7.8 11:00 .055 5.3 12.5 7.1 12:00 .057 5.5 12.2 6.7 13:00 .059 5.8 13.1 7.2 14:00 .060 6.1 12.9 6.7 15:00 .061 B 6.4 16.0 9.5 16:00 .062 6.6 14.9 8.2 17:00 .061 7.2 26.0 18.7 18:00 .055 6.4 15.2 8.7 19:00 .049 6.5 15.7 9.2 20:00 .043 7.2 19.5 12.3 21:00 .039 6.7 15.9 9.1 22:00 .035 C 7.4 18.8 11.3 23:00 B 7.5 14.7 7.1 Average .037 6.5 14.4 7.8 Max .062 7.6 26.0 18.7 Max Hour 16:00 07:00 17:00 17:00 Min .006 5.3 10.5 4.3 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 04-Jun-2026 22:50:00 23:50:00 0.059 0.07 -15.42% Date Printed: 6/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/4/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .016 .2 11.5 11.7 -.5 01:00 .003 6.2 25.1 31.3 -.4 02:00 .009 .9 14.2 15.1 -.5 03:00 .013 .3 10.2 10.5 -.5 04:00 .009 .4 9.6 10.1 -.6 05:00 .009 1.9 10.2 12.1 -.5 06:00 .021 2.7 7.7 10.4 -.5 07:00 .036 1.0 3.8 4.9 -.5 08:00 .046 .4 2.4 2.9 -.5 09:00 .052 .3 2.2 2.5 -.4 10:00 .054 .1 1.4 1.6 -.5 11:00 .056 .1 1.3 1.4 -.5 12:00 .058 .1 1.3 1.5 -.5 13:00 .057 .1 1.3 1.4 -.5 14:00 .057 .1 1.3 1.5 -.5 15:00 .058 .1 C 1.4 C 1.6 C -.5 16:00 .059 C C C -.4 17:00 .061 .1 C 2.1 C 2.3 C -.4 18:00 .059 .0 2.3 2.4 -.4 19:00 .059 .0 6.0 6.1 -.4 C 20:00 .051 .1 13.0 13.1 C 21:00 .031 .2 19.1 19.4 -.3 C 22:00 .032 C .2 14.6 14.8 -.4 23:00 C .2 10.8 11.0 -.5 Average .039 .6 7.5 8.2 -.4 Max .061 6.2 25.1 31.3 -.3 Max Hour 17:00 01:00 01:00 01:00 21:00 Min .003 .0 1.3 1.4 -.6 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-Jun-2026 15:46:00 16:11:00 66.2 70 -5.33% GPT-PS 04-Jun-2026 15:46:00 16:18:00 0.4 0.0 .48 GPTZ 04-Jun-2026 15:46:00 16:38:00 214.8 225 -4.5% GPT-PREC 04-Jun-2026 15:46:00 17:08:00 150.2 155 -3.05% NO2 GPT-PREC 04-Jun-2026 15:46:00 17:08:00 65 70 -7.07% NO2 Precision NO2_Diff PRECDIFF 04-Jun-2026 17:15:00 17:15:05 64.5 65.053 -.7% NOx NOx_Auto NO-PREC 04-Jun-2026 15:46:00 16:11:00 66.2 70 -5.32% Ozone O3_Auto ZERO 04-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.35% SO2 SO2_Auto ZERO 04-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.64 SPAN 04-Jun-2026 19:46:00 20:36:00 87.9 90 -2.31% PREC 04-Jun-2026 19:46:00 21:01:00 38.4 40 -3.8% Date Printed: 6/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/4/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.9 12.3 5.5 01:00 9.3 33.2 24.3 02:00 8.6 17.7 9.3 03:00 8.1 15.1 7.2 04:00 8.1 16.4 8.6 05:00 8.0 15.5 7.7 06:00 7.2 15.4 8.2 07:00 7.0 24.9 17.5 08:00 5.8 13.6 7.5 09:00 5.4 14.5 8.7 10:00 5.3 13.5 7.8 11:00 4.9 10.5 5.2 12:00 5.1 12.9 7.3 13:00 5.2 12.4 6.7 14:00 5.3 12.9 7.0 15:00 6.0 15.9 9.2 16:00 6.1 13.7 6.9 17:00 6.3 13.6 6.7 18:00 6.5 14.0 7.0 19:00 8.0 20.9 12.2 20:00 9.3 21.3 11.5 21:00 9.7 21.4 11.4 22:00 11.1 24.6 13.2 23:00 8.9 19.0 9.9 Average 7.1 16.8 9.4 Max 11.1 33.2 24.3 Max Hour 22:00 01:00 01:00 Min 4.9 10.5 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.8% Date Printed: 6/5/2026 01:30 Daily Summary Report Site: Union Cross 6/4/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .019 741.8 59.2 47.5 01:00 .010 741.4 57.8 48.2 02:00 .007 741.3 58.1 47.9 03:00 .009 741.3 58.6 47.7 04:00 .023 741.3 58.9 47.6 05:00 .026 741.5 59.5 47.7 06:00 .023 741.9 62.1 49.5 07:00 .035 742.1 66.9 51.4 08:00 .045 742.1 71.8 52.3 09:00 .051 742.1 75.2 53.7 10:00 .054 742.1 77.7 53.8 11:00 .060 741.8 79.2 54.4 12:00 .065 741.2 80.6 55.4 13:00 .066 740.6 82.1 56.0 14:00 .066 740.1 83.3 56.3 15:00 .067 739.6 83.9 56.5 16:00 .073 739.2 84.7 57.3 17:00 .070 739.0 84.7 57.8 18:00 .071 738.9 83.2 57.6 19:00 .061 738.7 78.6 56.0 20:00 .056 738.8 74.8 53.9 21:00 .046 738.9 71.1 52.7 22:00 .044 C 739.1 68.6 51.8 23:00 C 739.2 67.2 52.4 Average .045 740.5 71.9 52.7 Max .073 742.1 84.7 57.8 Max Hour 16:00 10:00 17:00 17:00 Min .007 738.7 57.8 47.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Jun-2026 22:50:00 23:50:00 0.07 0.07 .2% 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