The Department of the Environment is one of the few to pro-actively publish their FOI logs, and I am in the habit of collating them into one spreadsheet for ease of reference. People new to FOI often ask what they should ask for, logs are often a great way of discovering the types of things people ask for. Here is the FOI log of the Department from late 2004 to mid 2012:
Download as spreadsheet (File -> Download as)