You will need a Haul Route hearing if your property is within LA City Special Grading Area, and you are exporting more than 1,000 cubic yards of dirt from your property. See the Information Bulletin P/BC 2014-134, available at LADBS.ORG.
When do I need LA County Health Department for my project?
Any new restaurant or any tenant improvement of a restaurant will require approval by the LA County Health Department before a corresponding building permit can be issued. Any place where food is processed requires approval from LA County Health Department.