24 CFR §92.103

1. (a)Not later than 30 days after receiving notice of its formula allocation amount, a jurisdiction must notify HUD in writing of its intention to become a participating jurisdiction.
2. (b)A unit of general local government that has a formula allocation of less than $750,000, or less than $500,000 in fiscal years in which Congress appropriates less than $1.5 billion for this part, must submit, with its notice, one or more of the following, as appropriate, as evidence that it has met the threshold allocation requirements in § 92.102(b):
   1. (1)Authorization from the State to transfer a portion of its allocation to the unit of general local government;
   2. (2)A letter from the governor or designee indicating that the required funds have been approved and budgeted for the unit of general local government;
   3. (3)A letter from the chief executive officer of the unit of general local government indicating that the required funds have been approved and budgeted.