What is the test for de novo review of a decision by a district court to dismiss an indictment without prejudice under the Speedy Trial Act?

"We review de novo a district court's application of, and questions of law arising under, the Speedy Trial Act. We review for abuse of discretion a district court's decision to dismiss an indictment without prejudice for a violation of the Speedy Trial Act." United States v. Lewis, 611 F.3d 1172, 1175 (9th Cir. 2010) (citations omitted). We review de novo whether venue was proper. United States v. Hui Hsiung, 778 F.3d 738, 745 (9th Cir. 2015). We have jurisdiction pursuant to 28 U.S.C. 1291.