Appropriation— In addition to amounts otherwise available, there is appropriated to the Secretary of Health and Human Services, acting through the Director (referred to in this section as the Secretary), out of amounts in the Treasury not otherwise appropriated, $3,410,000,000 for the fiscal year ending September 30, 2021, to remain available until expended, for all activities authorized under section 302(b)(1) of the Indian Health Care Improvement Act (
25 U.S.C. 1632(b)(1)), including the planning, design, construction, modernization, improvement, and renovation of water, sewer, and solid waste sanitation facilities: Provided, That the Secretary may retain up to 10 percent of the amounts appropriated under this paragraph for administration of the Sanitation Facilities Construction Program and related management and staffing purposes.