The city explains that auto repairs can release chemicals harmful to the environment if not handled properly, and that if repairs are allowed on vehicles not owned by the homeowner, it can increase auto traffic in neighborhoods.

When I lived in San Jose I just Just happened to be in a very gear-head oriented neighborhood, The above statement would have been a defense in itself as within a 2 block radius there were a lot of garage doors open till midnight or later with music going and wrenches turning. mills, lathes, welders and just about anything else you can think of other than car lifts.

In the code the term "Normally" appears, Define normal, it's somewhat of an open ended term and depends on a wide range of variables IMO