Underground Storage Tank Fund For an additional amount for Leaking Underground Storage Tank Fund for necessary expenses related to the consequences of Hurricane Harvey, $15,000,000, to remain available until expended: Provided , That such amount is designated by the Congress as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985. State and Tribal Assistance Grants For an additional amount for State and Tribal Assistance Grants , $600,000,000, to remain available until expended, of which $500,000,000 shall be for capitalization grants for the Clean Water State Revolving Funds under title VI of the Federal Water Pollution Control Act, and of which $100,000,000 shall be for capitalization grants under section 1452 of the Safe Drinking Water Act: Provided , That notwithstanding section 604(a) of the Federal Water Pollution Control Act and section 1452(a)(1)(D) of the Safe Drinking Water Act, funds appropriated herein shall be provided to States in EPA Region 6 for wastewater and drinking water treatment works and facilities impacted by Hurricane Harvey: Provided further , That notwithstanding the requirements of section 603(d) of the Federal Water Pollution Control Act, for the funds appropriated herein, each State shall use not less than 20 percent but not more than 30 percent of the amount of its capitalization grants to provide additional subsidization to eligible recipients in the form of forgiveness of principal, negative interest loans or grants or any combination of these: Provided further , That the funds appropriated herein shall only be used for eligible projects whose purpose is to reduce flood damage risk and vulnerability or to enhance resiliency to rapid hydrologic change or a natural disaster at treatment works as defined by section 212 of the Federal Water Pollution Control Act or any eligible facilities under section 1452 of the Safe Drinking Water Act, and for other eligible tasks at such treatment works or