7-6-207. Deposit security. (1) The local governing body may require security only for that portion of the deposits that is not guaranteed or insured according to law and, as to the unguaranteed or uninsured portion, to the extent of:

(a) 50% of the deposits if the institution in which the deposit is made has a net worth to total assets ratio of 6% or more; or

(b) 100% if the institution in which the deposit is made has a net worth to total assets ratio of less than 6%. The security must consist of those enumerated in 17-6-103 or cashier's checks issued to the depository institution by any federal reserve bank.

(2) When negotiable securities are furnished, the securities may be placed in trust. The trustee's receipt may be accepted in lieu of the actual securities when the receipt is in favor of the treasurer or town clerk and the treasurer's or clerk's successors. All warrants or other negotiable securities must be properly assigned or endorsed in blank. The appropriate governing body shall, upon the acceptance and approval of any of the bonds or securities, make a complete minute entry of the acceptance and approval upon the record of its proceedings, and the bonds and securities must be reapproved at least quarterly.