The director has decided he wants an additional map added to this project. He needs to know the location of the city's sewer system in relation to the commercial properties that are between 1 and 3 acres in size. This is because the new business wants to be able to connect to the city's sewer system.
Luckily, you have a map file of the city's sewer system that was created for another project. This will serve as a great starting point for this new map you need to add to your project. Map files allow you to share previously created maps so they can be used in other projects without having to start over from scratch.
Once you import the map file, you will then need to add the commercial properties that are between 1 and 3 acres. To make that easier, you will create a layer file from the map you just created and then use that file to add the layer to the sewer map.