Sites that you no longer use can be deleted or archived. This will stop them from being available for selection when planning a sampling job.
You also have the option of merging sites into newer, current sites.

You can only delete sites that have no sample results attached to them and are not part of a sampling job, past or present.
If you can't delete a site, you'll have to archive it.

Deleting sites remove them entirely. You'll have to create a new site if you want to restore them.
Archived sites are retained, represented on the map by a hollow circle, and can be restored (unarchived) if required.

1- Archiving your sites

Click the 'Plan' icon in the panel on the left and tap or click 'Sites'.

You can archive, unarchive or delete sites individually or select multiple sites and manage them in bulk.

One site at a time

Click on the three vertical dots next to the site name. You'll have the option of renaming, archiving/unarchiving or deleting the site.

If a site isn't eligible for deletion then the option will not appear. The site will have to be archived to be cleared of the map.

Bulk edit

Click on 'Advanced Settings' and switch on 'Bulk Edit'

Select sites by either clicking on the sites on the map or clicking the box next to the sites' names

You have the option to Select (and deselect) all sites
Once you're happy with your selection, archive/unarchive or delete the sites using the blue buttons
If you add a site to your selection that isn't eligible to be deleted, that option will be greyed out

Read how to easily clean up your sites using the Site Clean Up Tool here

2 - Viewing your archived sites

To view your archived sites,

Select Plan then Sites

Select the drop down menu next to Advanced Settings.

Tick the Site Filter on for Archived.
You can then select the site and Unarchive it if necessary