I ran a check on Google's PageSpeed Insights and although the site rated fairly well, there was a reference to reducing the # of redirects. It recommended removing a # of redirect chains, none of which look familiar. On a whole, there are a fair amount of redirects as the company has radically trimmed down their core service offerings and related pages on their site. The are a number of remaining redirects in place.

It got me thinking, is there a point when you can remove the redirects and just delete the old pages? Does the value eventually transfer over to the new page or does the redirect need to stay in place forever?