Literally copy the letter they include (points A-I) and answer the questions. If the question doesn't apply (B for instance, hours of operation) just write: does not apply.
And then at the end I listed the articles/provisions that we were requesting be amended for our needs. Art. 2-512 p(3b); art. 10-104 sec9 p(b); and 10-102 sec3. I added some fluff and explanation but not much. Your exceptions may be similar but make sure to read through the code and ensure you've addressed each article/section that applies. The only thing they wrote me back and requested I add was to include a statement regarding how the keeping of domestic fowl on my lot will be "harmonious" with the environment.

My exact addition was:
The keeping of the proposed fowl shall be harmonious and compatible with the adjacent area. Thank you.
LOL. After I got an approval letter they tried to have me make additional changes but I refused - I already had the approval letter! Additionally, they asked to come by for a site visit but I refused since it's not required by any ordinance or statute.
Feel free to ask any other questions. Good luck!