Underground Storage Tank Assistance and Groundwater Protection Act

[AI summary unavailable — showing source text] Underground Storage Tank Assistance and Groundwater Protection Act - Amends the Solid Waste Disposal Act to authorize the Administrator of the Environmental Protection Agency to guarantee principal and interest on loans made to eligible small businesses for the closure, replacement, upgrade, and release detection of underground storage tanks. Sets forth amounts and conditions of such guarantees. Makes eligible for such guarantees persons owning up to 12 underground storage tanks. Permits the Administrator, on a case-by-case basis, to allow persons owning up to 99 tanks to be eligible for such guarantees if they meet this Act's requirements and such assistance will increase environmental protection. Permits the Administrator to make principal and interest payments on behalf of the borrower if: (1) the borrower is unable to make such payment and it is in the public interest to continue the activity; and (2) the probable net cost to the Government in making such payments would be less than that resulting from the borrower's default. Authorizes the Administrator, in the event of a default by a borrower, to make payments in accordance with the guarantee. Requires the Attorney General to…