• Click the “Create New Plume” button

A pop-up warning window will appear. You must read and understand the warning information prior to clicking the “OK” button to proceed.



Welcome to E-Plan chemical plume mapping system.


DO NOT refresh the page during mapping process.

DO NOT use the back arrow button.

Click “Exit” button if you would like to leave the system.

Your session will be timed out in 40 minutes.