Writing is a tricky process, especially when it comes to writing a survey. It's important to cover all areas of the company's needs from the survey and it should be done in a clear and concise manner. The boss won't take lightly to an un-proofed survey sent out to clients that has spelling and grammatical mistakes. When it comes time for proofing, make sure you are awake. Don't just scan over the text. The best way to catch mistakes is actually reading everything out loud.
It also helps to have another set of eyes look over the product before it's labeled "final."