To help you, I will tell you that if you don't see a letter in the cipher below you should disregard it completely. To further help you the text is quite long and I will tell you that the text is written in ordinary English.
To hinder you, I'm not telling you the keyword. That is the main task: use cryptanalytic techniques to decode the cipher text. Keep a note of the keyword, as it will prove useful in finding the cache.
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