Opacity Observation — C&E Concrete

Observation setup

Date

Start time

Auto-set to current time — edit if needed

Emission source — select unit

Observer name

Observer certification number

Conditions

Sun position

Wind direction

Wind speed (mph)

Temperature (°F)

24 readings — 5% increments only

Enter in 5% steps: 0, 5, 10, 15, 20... · One reading every 15 seconds · 24 readings = 6-minute observation per EPA Method 9

Reading 01 — 15-second interval

Reading 02 — 15-second interval

Reading 03 — 15-second interval

Reading 04 — 15-second interval

Reading 05 — 15-second interval

Reading 06 — 15-second interval

Reading 07 — 15-second interval

Reading 08 — 15-second interval

Reading 09 — 15-second interval

Reading 10 — 15-second interval

Reading 11 — 15-second interval

Reading 12 — 15-second interval

Reading 13 — 15-second interval

Reading 14 — 15-second interval

Reading 15 — 15-second interval

Reading 16 — 15-second interval

Reading 17 — 15-second interval

Reading 18 — 15-second interval

Reading 19 — 15-second interval

Reading 20 — 15-second interval

Reading 21 — 15-second interval

Reading 22 — 15-second interval

Reading 23 — 15-second interval

Reading 24 — 15-second interval

Enter readings to calculate running average

Result

6-minute average opacity (%)

Corrective action taken

Observation photo

Add photo

Observer name (print)

Signature

Sign with your finger