A commissioners court that adds territory under this subchapter shall modify the order that created the district under Section 68.107 to:
(1) modify the territory;
(2) add the facility;
(3) describe any security zones created or modified under this section, including the location of any facilities whose zone has changed;
(4) identify the security zone in which the added facility is located; and
(5) describe the portion, amount, and terms of payment of an assessment imposed by the board that is allocable to the facility.