Affirmed by unpublished PER CURIAM opinion.

Unpublished opinions are not binding precedent in this circuit.

Albert Lee Bethea appeals the district court’s order denying his motion for modification of sentence under 18 U.S.C. § 3582(c)(2) (2006). Bethea argues that the district court erred by failing to reduce his sentence based on Amendment 706 of the Guidelines, see U.S. Sentencing Guidelines Manual (“USSG”) § 2Dl.l(c) (2007 & Supp. 2008); USSG App. C Amend. 706. Amendment 706 lowered only the crack cocaine offense levels in USSG § 2D1.1. See United States v. Hood, 556 F.3d 226 (4th Cir. 2009). Thus, the Amendment did not alter Bethea’s offense level, which was controlled by USSG § 4B1.1. Further, the fact that the district court reduced Bethea’s sentence under 18 U.S.C. § 3553(e) (2006) for substantial assistance is irrelevant to the applicability of Amendment 706. Hood, 556 F.3d at 234.

Bethea also contends that the district court could have considered a sentence below the amended guidelines range under United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). This claim is foreclosed by our decision in United States v. Dunphy, 551 F.3d 247 (4th Cir. 2009), petition for cert. filed, — U.S.L.W. - (U.S. Mar. 20, 2009) (No. 08-1185). We have reviewed the record and find no reversible error. Accordingly, we affirm the decision of the district court. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.

AFFIRMED.