Head over to MyBlog (URL) and log in with your UAL username and password

Select your blog from the Your Sites list

Open the dashboard of your blog using the menu bar at the top of the screen. Click your blog title, or hover over the title and select Dashboard.

From the Dashboard, select Tools then Delete Site

Check the box I’m sure I want to permanently delete my site, then click the button Delete My Site Permanently

An email will be sent to the account that created the site. Click the confirmation link in the email to complete the site deletion

Next steps
Creating a blog site