Beginning on the date hereof, interest will accrue on the principal sum outstanding, and from time to time outstanding, at a rate equal to ten percent (10.0%) per annum, based upon actual days outstanding and a 365/366 day year (“Rate”). Interest will be earned daily and payable to Lender monthly. The first payment shall be due on the 1 st day of the month following the date of this Note, and on the 1 st day of each and every month thereafter during the term of this Note; except that if the first payment would be due within ten (10) days of the date of this Note then in such case the first payment shall not be due until the 1 st day of the following month. The outstanding principal balance together with all accrued and unpaid interest shall be due and payable on June 30, 2018 (“Maturity Date”). All payments of principal and interest shall be made in lawful currency of the United States of America, which shall be legal tender in payment of all debts, public and private, at the time of payment. This Note maybe prepaid in whole or in part at any time without fee, premium or penalty. If the borrowing base on the secured portion of this relationship drops during the life of this promissory note, the balance on this unsecured promissory note will increase so that the balance of principal on this note is $4,000,000 minus the borrowing base amount.