George Samuel Estep appeals the ten year term of imprisonment imposed by the district court following his guilty plea to a single count of conspiracy to distribute and *470 possess with intent to distribute cocaine and cocaine base in violation of 21 U.S.C. §§ 841(a)(1), (b)(1)(A) & 846 (2000). The Government has moved to dismiss the appeal based upon Estep’s waiver of his right to appeal. Our review of the record discloses that Estep knowingly and voluntarily waived his statutory right to appeal by the terms of his plea agreement. See United States v. Marin, 961 F.2d 493, 496 (4th Cir. 1992). This waiver precludes our review of his claim that the district court erred in finding that he was responsible for in excess of fifty grams of crack cocaine and sentencing him under § 841(b)(1)(A). See United States v. Brown, 232 F.3d 399, 402-03 (4th Cir. 2000). Accordingly, we dismiss the appeal. 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.

DISMISSED.