If you look on a cache page (already published cache) at the very bottom of the logs there should be a published log and it will have a user name next to it. Click on it, send them a message and let them know what you're planning.
Take some time to read up on the expected duties of a cache owner.
Thanks - I have emailed both cache owners but have had no response. I am fully breifed on the duties and have no problem - at least I will be able to maintain them. It appears the people who placed the caches all live outside our boarders and they would find in very difficult to maintain their caches.
You should be in contact with the Reveiwer, not the cache owner for matters of new caches.
Thanks - I have now contacted the reviewer with my questions, you have been most helpful.