40 CFR 35.4205 - How does my group procure a technical advisor or any other contractor?
When procuring contractors your group must also:
(b) Keep written records of the reasons for all your contracting decisions;
(c) Make sure that all costs are reasonable in a proposed contract;
(f) Perform a “cost analysis” to evaluate each element of a contractor's cost to determine if it is reasonable, allocable and allowable for all contracts over $25,000; and