[Code of Federal Regulations] [Title 40, Volume 27] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR310.16] [Page 387] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 310_REIMBURSEMENT TO LOCAL GOVERNMENTS FOR EMERGENCY RESPONSE TO Subpart B_Provisions Sec. 310.16 What kind of cost documentation is necessary? Cost documentation must be adequate for an audit. At a minimum, you must: (a) Include a description of the temporary emergency measures for which you request reimbursement; (b) Specify the local agency that incurred the cost, (such as, the Town Fire Department, the County Health Department, or the City Department of Public Works); (c) Include invoices, sales receipts, rental or leasing agreements, or other proof of costs you incurred; and (d) Certify that all costs are accurate and that you incurred them specifically for the response for which you are requesting reimbursement.