Whenever the Petty Cash Fund becomes low or depleted, the City Clerk shall prepare vouchers covering expenses as have been paid from the Petty Cash Fund and shall submit such vouchers together with the paid checks to the governing body for review and allowance of the amounts from the regular funds of the utilities. Warrants issued therefor shall be payable to the Petty Cash Fund and shall be deposited therein to restore said Petty Cash Fund to its original amount.