; of which not to exceed $15,000 may be for official reception and representation expenses; and of which up to $1,000,000 shall be available for workers compensation payments and unemployment compensation payments associated with the orderly closure of the United States Bureau of Mines; and of which $9,000,000 for the Office of Valuation Services is to be derived from the Land and Water Conservation Fund and shall remain available until expended. Administrative provisions For fiscal year 2018, up to $400,000 of the payments authorized by chapter 69 of title 31, United States Code, may be retained for administrative expenses of the Payments in Lieu of Taxes Program: Provided , That the amounts provided under this Act specifically for the Payments in Lieu of Taxes program are the only amounts available for payments authorized under chapter 69 of title 31, United States Code: Provided further , That in the event the sums appropriated for any fiscal year for payments pursuant to this chapter are insufficient to make the full payments authorized by that chapter to all units of local government, then the payment to each local government shall be made proportionally: Provided further , That the Secretary may make adjustments to payment to individual units of local government to correct for prior overpayments or underpayments: Provided further , That no payment shall be made pursuant to that chapter to otherwise eligible units of local government if the computed amount of the payment is less than $100. Insular affairs Assistance to territories For expenses necessary for assistance to territories under the jurisdiction of the Department of the Interior and other jurisdictions identified in section 104(e) of Public Law 108–188 , $90,930,000, of which: (1) $81,500,000 shall remain available until expended for territorial assistance, including general technical assistance, maintenance assistance, disaster assistance, coral reef initiative activities, and brown tree snake control and research