15 U.S.C. § 275a : US Code - Section 275A: Service charges

Search 15 U.S.C. § 275a : US Code - Section 275A: Service charges

The Secretary shall charge for services performed under the
authority of section 273 of this title, except in cases where he
determines that the interest of the Government would be best served
by waiving the charge. Such charges may be based upon fixed prices
or costs. The appropriation or fund bearing the cost of the
services may be reimbursed, or the Secretary may require advance
payment subject to such adjustment on completion of the work as may
be agreed upon.