United States v. Raul Mercado-Moreno , 869 F.3d 942 ( 2017 )


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  •                 FOR PUBLICATION
    UNITED STATES COURT OF APPEALS
    FOR THE NINTH CIRCUIT
    UNITED STATES OF AMERICA,                No. 15-10545
    Plaintiff-Appellee,
    D.C. No.
    v.                      1:04-cr-05185-
    AWI-1
    RAUL MERCADO-MORENO, AKA
    Raul, AKA El Ranchero, AKA
    Margarito Pacheo Gonzalez, AKA             OPINION
    Junga, AKA Javier Mercado
    Maldonado, AKA Raul Mercado
    Moreno, AKA Monster, AKA Raul
    Monstruo, AKA Talegas, AKA
    Talegon,
    Defendant-Appellant.
    Appeal from the United States District Court
    for the Eastern District of California
    Anthony W. Ishii, Senior District Judge, Presiding
    Argued and Submitted May 18, 2017
    San Francisco, California
    Filed August 28, 2017
    2           UNITED STATES V. MERCADO-MORENO
    Before: Richard C. Tallman and Sandra S. Ikuta, Circuit
    Judges, and Solomon Oliver, Jr., * Chief District Judge.
    Opinion by Judge Tallman
    SUMMARY **
    Criminal Law
    The panel affirmed the district court’s denial of a motion
    for reduction of sentence under 
    18 U.S.C. § 3582
    (c)(2) in
    light of retroactive Sentencing Guidelines Amendment 782,
    which raised from 1.5 to 4.5 kilograms the quantity of actual
    methamphetamine required to trigger the maximum base
    offense level.
    The panel held that a district court in § 3582(c)(2)
    proceedings may make supplemental findings of drug
    quantity if they are necessary to determine the defendant’s
    eligibility for a sentence reduction in light of a retroactive
    Guidelines amendment, but that in doing so, the district court
    may not make supplemental findings that are inconsistent
    with the findings made by the original sentencing court.
    The Honorable Solomon Oliver, Jr., Chief United States District
    *
    Judge for the Northern District of Ohio, sitting by designation.
    **
    This summary constitutes no part of the opinion of the court. It
    has been prepared by court staff for the convenience of the reader.
    UNITED STATES V. MERCADO-MORENO                    3
    The panel held that a district court has broad discretion
    in how to adjudicate § 3582(c)(2) proceedings, including
    whether to hold a hearing when making supplemental
    findings of drug quantity. The panel rejected the defendant’s
    argument that the district court was required to hold a
    contested hearing when making its supplemental findings.
    The panel explained that when the district court does not
    consider any evidence outside of the record at sentencing, an
    evidentiary hearing will not always be necessary. The panel
    rejected the defendant’s contention that the district court was
    required to hold a hearing pursuant to U.S.S.G. § 6A1.3,
    which applies only in original sentencing proceedings, not in
    § 3582(c)(2) proceedings.
    The panel rejected the defendant’s contention that the
    sentencing court’s finding that he distributed a total of 4.2
    kilograms of methamphetamine was a specific finding of
    drug quantity that precluded the district court from engaging
    in any supplemental fact-finding. Because the original
    sentencing court did not make any findings regarding the
    amount of manufactured methamphetamine attributable to
    the defendant, it was necessary for the district court to make
    those supplemental findings in order to rule on the
    defendant’s later motion. The panel held that the district
    court’s conclusion that the defendant was responsible for at
    least 4.5 kilograms of actual methamphetamine was not
    clearly erroneous.
    The panel held that the district court therefore did not err
    in concluding, without a hearing, that the defendant was
    ineligible for a sentence reduction under § 3582(c)(2)
    because Amendment 782 did not lower his applicable
    guideline range.
    4         UNITED STATES V. MERCADO-MORENO
    COUNSEL
    Sean Riordan (argued) and Ann C. McClintock, Assistant
    Federal Defenders; Heather E. Williams, Federal Defender;
    Office of the Federal Public Defender, Sacramento,
    California; for Defendant-Appellant.
    Kathleen A. Servatius (argued), Assistant United States
    Attorney; Camil A. Skipper, Appellate Chief; United States
    Attorney’s Office, Fresno, California; for Plaintiff-Appellee.
    OPINION
    TALLMAN, Circuit Judge:
    Defendant Raul Mercado-Moreno appeals the district
    court’s denial of his motion for a sentence reduction under
    
    18 U.S.C. § 3582
    (c)(2). Defendant led and managed a large-
    scale methamphetamine manufacturing and distribution
    enterprise in Eastern California from 2000 until 2004. In
    2006, Defendant pled guilty to conspiring to manufacture
    and distribute 50 grams or more of methamphetamine. At
    sentencing, the court found that Defendant distributed 4.2
    kilograms of actual methamphetamine during the course of
    the conspiracy. Because the threshold to trigger the
    maximum base offense level under the U.S. Sentencing
    Guidelines (USSG, or Guidelines) at the time of sentencing
    was 1.5 kilograms or more, the sentencing court properly
    applied the maximum base offense level without finding the
    precise quantity of actual methamphetamine that Defendant
    had manufactured during the course of the conspiracy.
    Defendant ultimately received 210 months of imprisonment.
    UNITED STATES V. MERCADO-MORENO                    5
    After Guidelines Amendment 782 raised the threshold to
    trigger the maximum base offense level from 1.5 kilograms
    to 4.5 kilograms, Defendant moved for a sentence reduction
    under § 3582(c)(2) before a new district judge since the
    original sentencing judge had retired. In determining
    Defendant’s eligibility for a sentence reduction under
    § 3582(c)(2), the second district judge found that Defendant
    was responsible for at least 4.5 kilograms of actual
    methamphetamine during the course of the conspiracy and,
    thus, Amendment 782 did not lower his applicable guideline
    range. Defendant’s § 3582(c)(2) motion was denied. On
    appeal, Defendant argues that § 3582(c)(2) does not
    authorize the district court to re-determine the drug quantity
    found at his original sentencing or to make new quantity
    findings without conducting a hearing.
    As a matter of first impression, we hold that when
    deciding a § 3582(c)(2) motion, a district court may
    supplement the original sentencing court’s quantity findings
    only when supplemental findings are necessary to determine
    the defendant’s eligibility for a sentence reduction in light of
    a retroactive Guidelines amendment. However, the district
    court may not make supplemental findings that are
    inconsistent with the findings made by the original
    sentencing court. We also hold that a district court has broad
    discretion in how to adjudicate § 3582(c)(2) proceedings,
    including whether to hold a hearing when making
    supplemental findings of drug quantity.
    There was no abuse of discretion here and we affirm the
    district court’s denial of Defendant’s motion for a sentence
    reduction under § 3582(c)(2).
    6            UNITED STATES V. MERCADO-MORENO
    I
    A
    We first set forth the general statutory framework for
    deciding motions under § 3582(c)(2). Ordinarily, courts
    may not modify a term of imprisonment once it has been
    imposed.     
    18 U.S.C. § 3582
    (c).       Section 3582(c)(2)
    recognizes a narrow exception to the general rule of
    sentencing finality. It allows courts to modify a term of
    imprisonment to give defendants “the benefit of later enacted
    adjustments to the judgments reflected in the [Sentencing]
    Guidelines.” Dillon v. United States, 
    560 U.S. 817
    , 828
    (2010).    The Supreme Court has emphasized that
    § 3582(c)(2) permits “only a limited adjustment to an
    otherwise final sentence and not a plenary resentencing
    proceeding.” Id. at 826.
    When deciding whether to reduce a defendant’s sentence
    under § 3582(c)(2), courts conduct a “two-step inquiry.” Id.
    First, a court must determine the defendant’s eligibility for a
    sentence reduction. Id. at 827. A defendant is eligible for a
    reduction only if (1) the defendant’s term of imprisonment
    was based on a sentencing range that has subsequently been
    lowered by a retroactive amendment to the Guidelines, and
    (2) the reduction is consistent with USSG § 1B1.10, the
    policy statement that implements § 3582(c)(2). See id. at
    826–27; USSG § 1B1.10(a)(1) (2014). 1
    1
    Because § 3582(c)(2) motions must be based on a retroactive
    Guidelines amendment, § 1B1.10 functions as a gatekeeper, specifying
    which amendments apply retroactively and thus give rise to a sentence
    reduction motion under § 3582(c)(2). See USSG § 1B1.10(a)(2)(A), (d)
    (2014). A district court must use the version of § 1B1.10 “that is in effect
    UNITED STATES V. MERCADO-MORENO                    7
    To decide whether a retroactive Guidelines amendment
    lowers a defendant’s sentencing range, the court must
    determine “the amended guideline range that would have
    been applicable to the defendant if the [relevant amendment]
    had been in effect at the time the defendant was sentenced.”
    USSG § 1B1.10(b)(1) (2014).             When making this
    determination, the court must substitute only the relevant
    amendment for the “corresponding guideline provisions that
    were applied when the defendant was sentenced” and must
    “leave all other guideline application decisions unaffected.”
    Id.; see Dillon, 
    560 U.S. at 827
    . A defendant is ineligible for
    a sentence reduction if the relevant amendment “does not
    have the effect of lowering the defendant’s applicable
    guideline range.” USSG § 1B1.10(a)(2)(B) (2014).
    If a defendant is eligible for a sentence reduction because
    the retroactive amendment lowers the defendant’s applicable
    guideline range, the court proceeds to the second step of the
    inquiry. The court must determine whether, in its discretion,
    “the authorized reduction is warranted, either in whole or in
    part, according to the factors set forth in” 
    18 U.S.C. § 3553
    (a) and “under the particular circumstances of the
    case.” Dillon, 
    560 U.S. at
    826–27. “Because reference to
    § 3553(a) is appropriate only at the second step of this
    circumscribed inquiry, it cannot serve to transform the
    proceedings under § 3582(c)(2) into plenary resentencing
    proceedings.” Id. at 827.
    B
    For federal drug offenses, a defendant’s base offense
    level generally depends on the type and quantity of drugs
    on the date on which the court reduces the defendant’s term of
    imprisonment [under] § 3582(c)(2).” Id., cmt. n.8 (2014).
    8           UNITED STATES V. MERCADO-MORENO
    attributable to the defendant. See USSG § 2D1.1(a)(5), (c)
    (2016). The Drug Quantity Table in USSG § 2D1.1(c)
    specifies the base offense levels for quantity ranges of
    various drugs, with a maximum of 38 levels. In 2014,
    Amendment 782 modified the Drug Quantity Table to
    reduce by two points the base offense levels for specific drug
    types and quantities. See USSG supp. app. C, amend. 782
    (Nov. 1, 2014). At the same time, Amendment 788 made
    Amendment 782 retroactive for all previously sentenced
    defendants. 2 See id., supp. app. C, amend. 788 (Nov. 1,
    2014); see also id. § 1B1.10(d) (2014) (specifying all
    retroactively applicable Guidelines amendments).
    Amendment 782 increased the quantity of actual
    methamphetamine required to trigger the maximum base
    offense level from 1.5 kilograms to 4.5 kilograms. Id.
    § 2D1.1(c)(1) (2014). Because the maximum base offense
    level of 38 still applied to defendants responsible for at least
    4.5 kilograms of actual methamphetamine, Amendment 782
    had no effect on those defendants. However, Amendment
    782 reduced the base offense level to 36 for defendants who
    were responsible for at least 1.5 kilograms but less than 4.5
    kilograms of actual methamphetamine. Id. § 2D1.1(c)(2)
    (2014).
    2
    Although district courts could hear § 3582(c)(2) motions based on
    Amendment 782, any sentence reductions based on Amendment 782
    could not become effective until November 1, 2015, at the earliest.
    USSG § 1B1.10(e)(1) (2014); see United States v. Navarro, 
    800 F.3d 1104
    , 1107–08 (9th Cir. 2015).
    UNITED STATES V. MERCADO-MORENO                 9
    II
    A
    Defendant led and managed a widespread
    methamphetamine manufacturing and distribution enterprise
    based in Stanislaus County in Eastern California from 2000
    until 2004. Defendant was allegedly the kingpin who headed
    the drug trafficking organization. In 2005, the Government
    charged Defendant and several others with various drug
    offenses in a twenty-eight-count superseding indictment. In
    2006, Defendant pled guilty, pursuant to a written plea
    agreement under Federal Rule of Criminal Procedure 11, to
    conspiring to manufacture and distribute 50 grams or more
    of methamphetamine in violation of 
    18 U.S.C. § 2
     and
    
    21 U.S.C. §§ 841
    (a)(1), 846.
    As the factual basis for his guilty plea, Defendant
    stipulated in his plea agreement and under oath at his plea
    colloquy that he distributed more than 4,376.1 grams of
    actual methamphetamine in furtherance of the conspiracy.
    In addition, he stipulated that he managed other individuals
    who were involved in making methamphetamine and caused
    them to obtain pseudoephedrine pills used to make
    methamphetamine at a laboratory found by law enforcement
    on April 12, 2004, in Turlock, California. Specifically,
    Defendant stipulated in his written plea agreement that:
    Defendant will plead guilty because he is in
    fact guilty of the crime set forth in Count Two
    of the Fourth Superseding Indictment. The
    defendant also agrees that the following are
    the facts of this case . . . .
    Beginning at a time unknown but no later
    than April, 2000, and continuing to June 30,
    10        UNITED STATES V. MERCADO-MORENO
    2004, in the County of Stanislaus, State and
    Eastern District of California, and elsewhere,
    the defendant conspired with other
    individuals to make methamphetamine. The
    defendant     knowingly      assisted    other
    individuals to extract pseudoephedrine in
    preparation for making methamphetamine in
    Stanislaus County in April 2000 and he
    knowingly possessed chemicals and
    equipment used to make methamphetamine
    in Washington State in December 2000.
    Thereafter, in 2003 and 2004, the defendant
    supplied methamphetamine to individuals
    whom he knew would redistribute it.
    Specifically, on January 22, 2004, March 31,
    2004, April 15, 2004, and May 26, 2004, the
    defendant distributed methamphetamine to
    other individuals. In all, the defendant
    distributed more than 4376.1 grams of
    methamphetamine in furtherance of this
    conspiracy.     In addition, the defendant
    managed other individuals who were
    involved in making methamphetamine and
    caused them to obtain pseudoephedrine pills
    in March 2004, and make methamphetamine
    at a methamphetamine laboratory found by
    law enforcement on April 12, 2004 in
    Turlock, California.
    At his plea colloquy, Defendant agreed that his plea
    agreement should be filed with the court and become part of
    the record of his case. Defendant also reaffirmed the factual
    basis for his plea under oath:
    UNITED STATES V. MERCADO-MORENO                 11
    THE COURT: Now I want to confirm that
    there are facts that will support your [guilty]
    plea. Is it true that beginning at a time
    unknown, but not later than April of 2000,
    continuing to June 30th of 2004, in Stanislaus
    County, State and Eastern District of
    California and elsewhere, you conspired with
    other individuals to make methamphetamine,
    you knowingly assisted other individuals
    extract pseudoephedrine in preparation for
    making methamphetamine in Stanislaus
    County in April of 2000, and you knowingly
    possessed chemicals and equipment used to
    make methamphetamine from the state of
    Washington in December of 2000. Is all that
    true?
    DEFENDANT: Yes.
    THE COURT: Thereafter, in 2003 and 2004,
    you     supplied     methamphetamine          to
    individuals whom you knew would be
    distributed. Specifically, on January 22,
    2004, March 31, 2004, April 15, 2004, and
    May      26,     2004,     you      distributed
    methamphetamine to other individuals. In
    all, you distributed more than 4,376.1 grams
    of [actual] methamphetamine to carry out the
    conspiracy. In addition, you managed other
    individuals who were involved in making
    methamphetamine and caused them to obtain
    pseudoephedrine pills in March of 2004, and
    make methamphetamine at a laboratory
    found by law enforcement on April 12th,
    2004, in Turlock, California; is all that true?
    12           UNITED STATES V. MERCADO-MORENO
    DEFENDANT: Yes.
    Defendant further stipulated to the maximum base offense
    level of 38 under the Guidelines, which applied to
    defendants responsible for 1.5 kilograms or more of actual
    methamphetamine at the time of his sentencing. USSG
    § 2D1.1(c)(1) (2006). Defendant also stipulated to a two-
    level enhancement based on his role as “an organizer, leader,
    manager, or supervisor in [the] criminal activity.” Id.
    § 3B1.1(c) (2006). 3 And, he stipulated to a term of
    210 months of imprisonment. In exchange, the Government
    agreed to dismiss the remaining charges against Defendant,
    to recommend a three-level reduction based upon his
    acceptance of responsibility under USSG § 3E1.1 (2006),
    and to recommend that he be sentenced “at the bottom of the
    applicable guideline range, but no less than 210 months.”
    During his sentencing proceedings, Defendant did not
    object to the facts asserted in the presentence investigation
    report (PSR), including that law enforcement had also seized
    an additional 40 pounds of methamphetamine in solution
    from the Turlock methamphetamine laboratory on April 12,
    2004. 4 At Defendant’s sentencing hearing in January 2007,
    the sentencing court adopted the PSR and found that a “total
    4.2 [sic] kilograms of methamphetamine was distributed by
    the defendant during the course of the conspiracy.”
    3
    To qualify under § 3B1.1, “the defendant must have been the
    organizer, leader, manager, or supervisor of one or more other
    participants” in a criminal activity or must have “exercised management
    responsibility over the property, assets, or activities of a criminal
    organization.” USSG § 3B1.1, cmt. n.2 (2006).
    4
    The PSR also described Defendant’s involvement in other
    methamphetamine manufacturing activities in April 2000 and December
    2000, but did not identify the drug quantities involved in those activities.
    UNITED STATES V. MERCADO-MORENO                               13
    Defendant acknowledges that the sentencing court’s finding
    of 4.2 kilograms, rather than 4.3 kilograms, was based on a
    typographical error in the PSR. Specifically, the PSR
    mistakenly asserted: “According to the plea agreement,
    [Defendant] was responsible for the distribution of 4,276.1
    grams of methamphetamine during the course of the
    conspiracy,” and, “[i]n this case, the defendant and the
    Government have agreed that a total of 4,276.1
    (4.2 kilograms) grams of methamphetamine was distributed
    by the defendant during the course of the conspiracy.”
    Despite the court’s reliance on the PSR’s mistaken
    assertion, the factual issue as to whether Defendant
    distributed “more than 4.3 kilograms” or a “total of
    4.2 kilograms” was immaterial at the time of sentencing,
    because the threshold required to trigger the maximum base
    offense level of 38 at that time was 1.5 kilograms. 5 Because
    the sentencing court’s distribution finding was more than
    sufficient to trigger the maximum base offense level, the
    court made no findings regarding the quantity of
    methamphetamine that Defendant manufactured during the
    course of the conspiracy.            Applying a two-level
    enhancement for Defendant’s role in the offense and a three-
    level reduction for his acceptance of responsibility then
    yielded a corresponding sentencing range of 210 to 262
    months. See USSG ch. 5, pt. A (2006). After considering
    the 
    18 U.S.C. § 3553
    (a) factors, the sentencing court
    imposed a term of 210 months’ imprisonment, at the bottom
    5
    Indeed, the Government observes that the sentencing court’s error
    was not corrected because “the parties, the court, or the probation office
    either failed to notice [it] or believed it insignificant in light of the . . .
    minimum quantity necessary to support the [maximum] base offense
    level (1.5 kilograms of actual methamphetamine).”
    14        UNITED STATES V. MERCADO-MORENO
    of the guideline range, in accordance with Defendant’s plea
    agreement and the parties’ stipulations.
    B
    In June 2015, Defendant filed a § 3582(c)(2) motion for
    a sentence reduction, which was assigned to a different
    district judge. Defendant argued that Amendment 782
    lowered his sentencing range because it raised the threshold
    required to trigger the maximum base offense level from
    1.5 to 4.5 kilograms and because “the amount of meth actual
    for which he was held responsible [was] 4.2 kilograms.”
    Thus, he argued, his new base offense level under the revised
    Drug Quantity Table was 36. In opposing Defendant’s
    § 3582(c)(2) motion, the Government submitted a chemical
    analysis report regarding the materials seized from the
    Turlock methamphetamine laboratory on April 12, 2004.
    That report, which was not before the original sentencing
    court, conservatively estimated that the Turlock “large-scale
    methamphetamine manufacturing laboratory [was] capable
    of producing 40 pounds of [actual] methamphetamine.”
    The district court rejected Defendant’s argument that the
    sentencing court’s 4.2-kilogram distribution finding was a
    conclusive determination of the total drug quantity
    attributable to Defendant. The district court cited the
    language in Defendant’s plea agreement stating that “the
    defendant distributed more than 4376.1 grams.” It also cited
    the additional quantities of methamphetamine not discussed
    at sentencing but noted in the PSR, including the 40 pounds
    of methamphetamine in solution that was seized from the
    Turlock laboratory on April 12, 2004.
    The district court then considered the Government’s
    chemical analysis report, noting that 40 pounds of actual
    UNITED STATES V. MERCADO-MORENO                       15
    methamphetamine amounted to roughly 18 kilograms. 6 The
    district court found that, “[c]onsidering the conservative
    estimate that approximately 18 kilograms of actual
    methamphetamine could have been produced with the
    methamphetamine solution found at the methamphetamine
    laboratory discovered on April 12, 2004, and that the
    defendant admitted involvement with that facility, the drug
    quantity attributable to defendant exceeds 4.5 kilograms of
    methamphetamine.” Because Amendment 782 did not alter
    Defendant’s applicable sentencing range, the district court
    held that he was ineligible for a sentence reduction under
    § 3582(c)(2). The court thus denied Defendant’s motion at
    the first step of the § 3582(c)(2) inquiry without reaching the
    discretionary second step. This appeal followed.
    III
    We have jurisdiction under 
    28 U.S.C. § 1291
     to review
    the denial of a § 3582(c)(2) motion for a sentence reduction.
    United States v. Chaney, 
    581 F.3d 1123
    , 1125 (9th Cir.
    2009). Section 3582(c)(2) relief is available to defendants
    who plead guilty under a plea agreement recommending a
    particular sentence as a condition of the plea if “the district
    court’s ‘decision to accept the plea and impose the
    recommended sentence’ was ‘based on the Guidelines.’”
    United States v. Davis, 
    825 F.3d 1014
    , 1027 (9th Cir. 2016)
    (en banc) (quoting Freeman v. United States, 
    564 U.S. 522
    ,
    534 (2011) (plurality opinion)). We review de novo
    “whether a district court has jurisdiction to modify a
    sentence under 
    18 U.S.C. § 3582
    (c)(2).” United States v.
    Spears, 
    824 F.3d 908
    , 912 (9th Cir. 2016). And we review
    de novo whether a district court deciding a § 3582(c)(2)
    6
    USSG § 2D1.1, cmt. n.8(D) (2014) (converting 1 pound to 0.4536
    kilograms).
    16        UNITED STATES V. MERCADO-MORENO
    motion may supplement the original sentencing court’s drug
    quantity findings. See United States v. Paulk, 
    569 F.3d 1094
    , 1095 (9th Cir. 2009) (per curiam). If so, we review
    the district court’s denial of the § 3582(c)(2) motion for
    abuse of discretion. Chaney, 
    581 F.3d at 1125
    .
    In reviewing for abuse of discretion, we may affirm the
    “district court on any ground supported by the record, even
    if the district court’s reasoning differs from our own.”
    Preminger v. Principi, 
    422 F.3d 815
    , 820 (9th Cir. 2005).
    We will reverse only if the district court relied on an
    erroneous legal standard or clearly erroneous findings of
    fact. Chaney, 
    581 F.3d at 1125
    . “We review factual
    findings, including a determination of the quantity of drugs
    involved in an offense, for clear error.” United States v.
    Dallman, 
    533 F.3d 755
    , 760 (9th Cir. 2008). Under the clear
    error standard of review, if “the district court’s account of
    the evidence is plausible in light of the record viewed in its
    entirety, the court of appeals may not reverse it.” Anderson
    v. City of Bessemer City, N.C., 
    470 U.S. 564
    , 573–74 (1985).
    IV
    Defendant’s eligibility for a sentence reduction under
    § 3582(c)(2) turns on whether he was responsible for a total
    of 4.5 kilograms or more of actual methamphetamine during
    the course of the conspiracy. If so, he still receives the
    maximum base offense level and Amendment 782 does not
    alter his sentencing range—thus precluding him from a
    reduction under § 3582(c)(2).
    Defendant challenges the district court’s denial of his
    § 3582(c)(2) motion on two grounds. First, he asserts that
    § 3582(c)(2) does not allow the district court to re-determine
    the drug quantity found at his original sentencing. He argues
    that the sentencing court specifically found that he was
    UNITED STATES V. MERCADO-MORENO                 17
    responsible for 4.2 kilograms and the district court’s
    decision contradicts that finding. Second, Defendant
    contends that the district court erred by engaging in
    supplemental fact-finding on drug quantity without a
    hearing.
    We hold that a district court in § 3582(c)(2) proceedings
    may make supplemental findings of drug quantity if they are
    necessary to determine the defendant’s eligibility for a
    sentence reduction in light of a retroactive Guidelines
    amendment. In doing so, the district court may not make
    supplemental findings that are inconsistent with the findings
    made by the original sentencing court. We also hold that a
    district court has broad discretion in how to adjudicate
    § 3582(c)(2) proceedings, including whether to hold a
    hearing when making supplemental findings of drug
    quantity.
    A
    To begin, § 3582(c)(2) instructs courts to determine
    whether a retroactive Guidelines amendment lowers a
    defendant’s sentencing range. In the case of an amendment
    to the Drug Quantity Table, such as Amendment 782, this
    analysis hinges on whether the drug quantity attributable to
    the defendant either exceeds or falls below the revised
    quantity threshold. That inquiry is straightforward where,
    for example, the sentencing court found the precise total
    quantity of drugs (such as “X kilograms”) attributable to the
    defendant. However, a sentencing court’s quantity finding
    may sometimes be ambiguous or incomplete when viewed
    in the context of a later Guidelines amendment. For
    instance, the sentencing court may have attributed a range of
    quantities (such as “at least X kilograms”) to the defendant.
    Or, as here, the sentencing court may have quantified only
    part of the amount for which Defendant was responsible,
    18        UNITED STATES V. MERCADO-MORENO
    without making a specific finding as to the rest, because that
    partial amount supported the maximum base offense level at
    the time of sentencing. Typically, in those cases, neither the
    court nor the parties anticipate a future Guidelines
    amendment that will move the line and require further fact-
    finding to determine the defendant’s eligibility for a sentence
    reduction under § 3582(c)(2).
    In those cases where a sentencing court’s quantity
    finding is ambiguous or incomplete, a district court may
    need to identify the quantity attributable to the defendant
    with more precision to compare it against the revised drug
    quantity threshold under the relevant Guidelines
    amendment. The Supreme Court indicated that such fact-
    finding was permissible in Dillon. See 
    560 U.S. at
    828–29
    (stating that “facts found by a judge at a § 3582(c)(2)
    proceeding do not serve to increase the prescribed range of
    punishment”). We thus join our sister circuits in recognizing
    that § 3582(c)(2)’s eligibility inquiry may require a district
    court to supplement the original sentencing court’s drug
    quantity findings to “determine the amended guideline range
    that would have been applicable” to the defendant in light of
    a retroactive Guidelines amendment. USSG § 1B1.10(b)(1)
    (2014). The Seventh Circuit, for example, held that
    nothing prevents the court from making new
    findings that are supported by the record and
    not inconsistent with the findings made in the
    original sentencing determination. Indeed,
    new findings may be necessary where, as
    here, the retroactive amendment to the
    guidelines altered the relevant drug-quantity
    thresholds for determining the defendant’s
    base offense level.
    UNITED STATES V. MERCADO-MORENO                   19
    United States v. Hall, 
    600 F.3d 872
    , 876 (7th Cir. 2010). The
    Eleventh Circuit also elaborated on the power of courts to
    make additional findings consistent with earlier ones: “[If]
    a district court found during the original sentence proceeding
    that ‘at least X kilograms’ were attributable to the defendant,
    it may not find . . . that ‘less than X kilograms’ were
    attributable; it may, however, find attributable X kilograms,
    or 2X kilograms, or 10X kilograms.” United States v.
    Hamilton, 
    715 F.3d 328
    , 340 (11th Cir. 2013).
    Other courts of appeals have reached the same
    conclusion. See, e.g., United States v. Peters, 
    843 F.3d 572
    ,
    577 (4th Cir. 2016) (“[D]istrict courts may make additional
    findings on the drug quantities attributable to defendants in
    § 3582(c)(2) proceedings. Such findings must be supported
    by the record and consistent with earlier findings.”), cert.
    denied, No. 16-8336 (U.S. June 19, 2017); United States v.
    Wyche, 
    741 F.3d 1284
    , 1293 (D.C. Cir. 2014) (“If the
    original sentencing court failed to make a specific drug-
    quantity calculation, the resentencing court may have to
    make its own quantity finding in order to determine the
    defendant’s guideline range.”); United States v. Rios,
    
    765 F.3d 133
    , 138 (2d Cir. 2014) (observing that district
    courts may make “new findings of fact when ruling on a
    § 3582(c)(2) motion” because “new findings are often
    necessary where . . . retroactive amendments have altered
    the relevant drug-quantity thresholds for determining a
    defendant’s base offense level” (citations omitted)); United
    States v. Battle, 
    706 F.3d 1313
    , 1319 (10th Cir. 2013) (“[A]
    district court may look to its previous findings, including any
    portions of a PSR adopted by the sentencing court, to make
    supplemental calculations of drug quantity . . . if such
    calculations are necessary to determine the amended
    guideline range that would have been applicable in light of a
    retroactive Guideline amendment.” (quotation omitted));
    20        UNITED STATES V. MERCADO-MORENO
    United States v. Moore, 
    706 F.3d 926
    , 929 (8th Cir. 2013)
    (“[Section] 1B1.10(b)(1) not only permits, but may often
    require, district courts to make findings necessary to resolve
    § 3582(c)(2) motions.”); United States v. Moore, 
    582 F.3d 641
    , 646 (6th Cir. 2009) (holding that, where the original
    drug quantity determination is not specific enough for the
    district court to determine whether a defendant is eligible for
    a sentence reduction under § 3582(c)(2), the court may make
    new findings of fact that are supported by the record and
    consistent with the findings made in the original sentencing
    proceedings).
    “[A]bsent a strong reason to do so, we will not create a
    direct conflict with other circuits.” United States v. Chavez-
    Vernaza, 
    844 F.2d 1368
    , 1374 (9th Cir. 1987). We agree
    with our sister circuits and join them in holding that district
    courts in § 3582(c)(2) proceedings may make additional
    findings on the drug quantity attributable to a defendant if
    those findings are necessary to determine the defendant’s
    eligibility for a sentence reduction. Such findings must be
    supported by the record and cannot contradict any findings
    made by the original sentencing court.
    B
    We also reject Defendant’s argument that the district
    court was required to hold a contested hearing when making
    its supplemental findings. A district court has broad
    discretion in how to adjudicate § 3582(c)(2) proceedings,
    including whether to hold a hearing when making
    supplemental determinations of drug quantity. See Rios,
    765 F.3d at 138; e.g., United States v. Hernandez, 
    645 F.3d 709
    , 712–13 (5th Cir. 2011) (holding that “the district court
    did not abuse its discretion in refusing to . . . grant an
    evidentiary hearing to decide the amount of crack for which
    Hernandez was responsible” in light of a retroactive
    UNITED STATES V. MERCADO-MORENO                            21
    amendment modifying the guideline ranges for crack
    cocaine offenses), cited with approval in Spears, 824 F.3d at
    913. When the district court does not consider any evidence
    outside of the record at sentencing, an evidentiary hearing
    will not always be necessary.
    In addition, we reject Defendant’s contention that the
    district court was required to hold a hearing pursuant to
    USSG § 6A1.3. Section 6A1.3 applies only in original
    sentencing proceedings, and not in § 3582(c)(2)
    proceedings. Section 6A1.3 provides that “[w]hen any
    factor important to the sentencing determination is
    reasonably in dispute, . . . the court shall resolve [it] at a
    sentencing hearing in accordance with [Federal Rule of
    Criminal Procedure 32(i)].” USSG § 6A1.3(a)–(b) (2016)
    (emphasis added). Rule 32 governs the procedures for a
    defendant’s original sentencing, and Rule 32(i) sets forth the
    procedures that a sentencing judge must follow before
    imposing the defendant’s original sentence. See Fed. R.
    Crim. P. 32(i)(4)(B), (C). 7
    District courts ruling on § 3582(c)(2) motions need not
    conduct sentencing hearings under Rule 32 because
    § 3582(c)(2) proceedings are not plenary resentencing
    7
    The Guidelines’ commentary further reveals that § 6A1.3 applies
    only in original sentencing proceedings. See USSG ch. 6, pt. A, intro.
    cmt. (“This Part [containing § 6A1.3] sets forth the procedures for
    establishing the facts upon which the sentence will be based.” (emphasis
    added)); id. § 6A1.3, cmt. (“[L]engthy sentencing hearings seldom
    should be necessary”; “In determining the relevant facts, sentencing
    judges are not restricted to information that would be admissible at trial”;
    “[L]ower evidentiary standard at sentencing permits sentencing court’s
    consideration of acquitted conduct” (emphasis added)); see also Stinson
    v. United States, 
    508 U.S. 36
    , 38 (1993) (“[C]ommentary in the
    Guidelines Manual that interprets or explains a guideline is [generally]
    authoritative.”).
    22        UNITED STATES V. MERCADO-MORENO
    proceedings. “By its terms, § 3582(c)(2) does not authorize
    a sentencing or resentencing proceeding. Instead, it provides
    for the modification of a term of imprisonment by giving
    courts the power to reduce an otherwise final sentence in
    circumstances specified by the Commission.” Dillon,
    
    560 U.S. at 825
     (quotation marks and alterations omitted).
    The Supreme Court has emphasized that § 3582(c)(2)
    “authorize[s] only a limited adjustment to an otherwise final
    sentence and not a plenary resentencing proceeding.” Id. at
    826. “Taking the original sentence as given, any facts found
    by a judge at a § 3582(c)(2) proceeding do not serve to
    increase the prescribed range of punishment; instead, they
    affect only the judge’s exercise of discretion within that
    range.” Id. at 828 (emphasis added).
    Unlike in § 3582(c)(2) proceedings, factual findings
    made at a sentencing proceeding may serve to increase the
    defendant’s prescribed range of punishment. It thus makes
    sense that § 6A1.3 requires sentencing courts to resolve any
    disputed factors important to the sentencing determination
    “at a sentencing hearing in accordance with Rule 32(i).”
    USSG § 6A1.3(b). Here, Defendant’s § 3582(c)(2) motion
    to reduce his original sentence sought “only a limited
    adjustment to an otherwise final sentence and not a plenary
    resentencing proceeding.” Dillon, 
    560 U.S. at 825
    . Thus,
    § 6A1.3 did not require the district court to conduct a Rule
    32(i) sentencing hearing to decide his motion.
    V
    We turn now to whether the district court abused its
    discretion in denying Defendant’s § 3582(c)(2) motion by
    improperly engaging in supplemental fact-finding or by
    resting its decision on a clearly erroneous finding of fact.
    See Chaney, 
    581 F.3d at 1125
    .
    UNITED STATES V. MERCADO-MORENO                   23
    A
    We begin with the framework for making supplemental
    findings of drug quantity in § 3582(c)(2) proceedings.
    Under the first step of the Dillon analysis, a district court
    must determine a defendant’s eligibility for a sentence
    reduction by evaluating whether the defendant’s applicable
    guideline range would have been lower if the relevant
    Guidelines amendment were in effect at the time he was
    sentenced.      See Dillon, 
    560 U.S. at 827
    ; USSG
    § 1B1.10(a)(2)(B), (b) (2014). If the record reflects that the
    sentencing court made a specific finding regarding the total
    quantity of drugs for which the defendant was responsible,
    or if the defendant admitted to a specific total quantity, then
    the district court must use that quantity and determine
    whether applying the retroactive amendment would lower
    the defendant’s guideline range. If so, the defendant is
    eligible for a sentence reduction and the court proceeds to
    the second step of the Dillon analysis.
    But, if the sentencing court’s quantity finding was
    ambiguous or incomplete, the district court may need to
    make additional findings of drug quantity to determine the
    defendant’s eligibility for a sentence reduction. To do so,
    the district court must determine whether the defendant is
    more likely than not responsible for the new quantity
    threshold under the retroactive Guidelines amendment. See
    United States v. Howard, 
    894 F.2d 1085
    , 1090 (9th Cir.
    1990) (adopting the preponderance of the evidence standard
    of proof for Guidelines issues); e.g., United States v.
    Valentine, 
    694 F.3d 665
    , 674 n.4 (6th Cir. 2012) (“[I]t is
    sufficient for the [district] court to consider the amount of
    the new threshold in the retroactive amendment, here
    4.5 kilograms, and determine whether a preponderance of
    24         UNITED STATES V. MERCADO-MORENO
    the evidence in the record indicates that the defendant is
    [more likely than not] responsible for that amount.”).
    The district court may consider, for example, “the trial
    transcript, the sentencing transcript, and the portions of the
    presentence report that the defendant admitted to or the
    sentencing court adopted.” Valentine, 694 F.3d at 670. And
    it may accept as true any facts in a PSR that the defendant
    did not object to at the time of sentencing. See United States
    v. Scrivner, 
    114 F.3d 964
    , 967 (9th Cir. 1997) (“[It] is well
    settled that factual findings in a PSR can be accepted as
    accurate . . . if a defendant failed to raise objections at the
    time of sentencing.”); United States v. Deninno, 
    29 F.3d 572
    ,
    580 (10th Cir. 1994) (“Failure to object to a fact in a
    presentence report, or failure to object at the hearing, acts as
    an admission of fact.”). However, the district court’s
    supplemental findings may not be inconsistent with any
    factual determinations made by the original sentencing
    court. See, e.g., Rios, 765 F.3d at 138; United States v.
    Adams, 
    104 F.3d 1028
    , 1031 (8th Cir. 1997) (holding that it
    is implicit in § 3582(c)(2) proceedings “that the district court
    is to leave all of its previous factual decisions intact when
    deciding whether to apply a guideline retroactively”).
    Lastly, the district court is not required to find a specific
    quantity of drugs. For instance, where materials such as
    waste water from an illicit laboratory used to manufacture a
    controlled substance “cannot readily be separated from the
    mixture or substance that appropriately is counted in the
    Drug Quantity Table, the court may use any reasonable
    method to approximate the weight of the . . . substance to be
    counted.” USSG § 2D1.1, cmt. n.1 (2014) (emphasis
    added). And circumstantial evidence may be sufficient to
    determine the weight of a useable controlled substance by a
    preponderance of the evidence. See United States v.
    UNITED STATES V. MERCADO-MORENO                   25
    Dudden, 
    65 F.3d 1461
    , 1471 (9th Cir. 1995). Thus, if the
    exact quantity of drugs involved is unclear or cannot be
    easily determined, the district court may approximate that
    quantity based on circumstantial evidence, making sure to
    err on the side of caution, and hold the defendant
    accountable for the quantity that he is more likely than not
    actually responsible for. Valentine, 694 F.3d at 672, 674 n.6.
    B
    Applying this analysis to the present case, we first reject
    Defendant’s contention that the sentencing court’s finding
    that he distributed a total of 4.2 kilograms of
    methamphetamine was a specific finding of drug quantity
    that precluded the district court from engaging in any
    supplemental fact-finding.
    Defendant stipulated in his Rule 11 plea agreement and
    at his plea colloquy that he distributed more than 4,376.1
    grams of actual methamphetamine, not a total of
    4.2 kilograms. He also agreed that his plea agreement
    should be filed with the sentencing court and become part of
    the record of his case. In enacting Rule 11, Congress
    “evidenced its intent to require a district court to sentence a
    defendant in accordance with the plea agreement.” United
    States v. Mukai, 
    26 F.3d 953
    , 956 (9th Cir. 1994) (citation
    omitted). As Defendant acknowledges, the sentencing
    court’s finding of 4.2 kilograms, rather than 4.3 kilograms,
    was due to a transpositional error in the PSR upon which the
    sentencing court mistakenly relied. At oral argument,
    Defendant conceded that 4.3 kilograms would have been the
    more accurate figure. We thus analyze the district court’s
    decision using the more accurate, 4.3-kilogram figure.
    In addition to the 4.3 kilograms of actual
    methamphetamine Defendant distributed, he stipulated that
    26          UNITED STATES V. MERCADO-MORENO
    he “managed other individuals who were involved in making
    methamphetamine and caused them to obtain
    pseudoephedrine pills [used to] make methamphetamine at a
    methamphetamine laboratory found by law enforcement on
    April 12, 2004 in Turlock, California.” Defendant did not
    object at sentencing to the PSR’s assertion that law
    enforcement seized approximately 40 pounds of
    methamphetamine in solution from a methamphetamine
    laboratory on April 12, 2004. Based on Defendant’s failure
    to object, that factual assertion is accepted as true. See
    Scrivner, 
    114 F.3d at 967
    . 8 Further, it is undisputed that the
    4.3 kilograms of actual methamphetamine that Defendant
    distributed did not involve the 40 pounds of
    methamphetamine in solution that was seized from the
    Turlock laboratory on April 12, 2004.
    Because the Guidelines at the time of sentencing
    required only a finding of 1.5 kilograms to trigger the
    maximum base offense level, the sentencing court only
    determined the quantity of actual methamphetamine that
    Defendant had distributed. It made no findings regarding the
    quantity of actual methamphetamine that Defendant was
    responsible for manufacturing or conspiring to manufacture
    during the course of the conspiracy. Amendment 782 would
    lower Defendant’s base offense level, and thus his applicable
    8
    To the extent Defendant challenges the PSR’s factual assertions,
    we reject those arguments. “[A] defendant waives a challenge to a
    presentence report by failing to object in the district court.” United
    States v. Visman, 
    919 F.2d 1390
    , 1394 (9th Cir. 1990); see, e.g., United
    States v. Bauer, 
    84 F.3d 1549
    , 1563 (9th Cir. 1996) (rejecting the
    defendant’s argument that “the amount of marijuana attributed to him in
    the presentence report was not supported by the facts” because defendant
    failed to challenge the report in the district court); Deninno, 
    29 F.3d at 580
     (“[T]he burden of alleging factual inaccuracies of the presentence
    report is on the defendant.”).
    UNITED STATES V. MERCADO-MORENO                           27
    guideline range, only if the total quantity of actual
    methamphetamine attributable to him was less than
    4.5 kilograms. Thus, it would have been impossible for the
    district court to determine Defendant’s eligibility for a
    sentence reduction without addressing the quantity of
    methamphetamine that Defendant was responsible for
    manufacturing during the course of the conspiracy. See
    USSG § 1B1.10(b)(1) (2014).         Because the original
    sentencing court did not make any findings regarding the
    amount of manufactured methamphetamine attributable to
    Defendant, it was necessary for the district court to make
    those supplemental findings in order to rule on Defendant’s
    later motion.
    C
    Having concluded that further fact-finding was not only
    permitted but required in order to resolve Defendant’s
    motion, we turn now to our review of the district court’s
    factual findings. 9 “We review factual findings, including a
    determination of the quantity of drugs involved in an
    9
    Preliminarily, we also reject Defendant’s contention that the
    Government cannot argue, and the district court cannot find, an amount
    higher than 4.2 kilograms because the government waived a higher
    finding by failing to object to the quantity found at the original
    sentencing. “[W]aiver is the intentional relinquishment or abandonment
    of a known right.” United States v. Olano, 
    507 U.S. 725
    , 733 (1993)
    (quotation marks omitted). It does not apply where, as here, the
    Government did not have an incentive to prove anything more than
    1.5 kilograms at the original sentencing and could not have knowingly
    relinquished the unforeseeable necessity to argue a higher amount later
    on. See, e.g., Wyche, 741 F.3d at 1294 (“[T]he Government was not
    required to prove—and had no reason to argue—that Wyche was
    responsible for any amount of cocaine base over 500 grams. Under these
    circumstances, . . . the Government is free to challenge drug quantity.”);
    Valentine, 694 F.3d at 674 n.5 (rejecting similar argument).
    28        UNITED STATES V. MERCADO-MORENO
    offense, for clear error.” Dallman, 
    533 F.3d at 760
    . A
    factual finding is clearly erroneous when “the reviewing
    court on the entire evidence is left with the definite and firm
    conviction that a mistake has been committed.” Anderson,
    
    470 U.S. at 753
     (citation omitted). If “the district court’s
    account of the evidence is plausible in light of the record
    viewed in its entirety, the court of appeals may not reverse
    it.” 
    Id.
     at 573–74. “Where there are two permissible views
    of the evidence, the factfinder’s choice between them cannot
    be clearly erroneous.” 
    Id.
     “This is so even when the district
    court’s findings [are based on] physical or documentary
    evidence or inferences from other facts.” 
    Id.
    1
    We first reject Defendant’s argument that the 40 pounds
    of methamphetamine in solution seized from the Turlock
    laboratory did not constitute “relevant conduct” and thus
    may not be considered in calculating his base offense level.
    “Types and quantities of drugs not specified in the count of
    conviction may be considered in determining the offense
    level.” USSG § 2D1.1, cmt. n.5 (2014). To determine a
    defendant’s base offense level when the Guidelines specify
    more than one, courts consider the defendant’s relevant
    conduct. See id. § 1B1.3(a) (2014). Relevant conduct
    includes:
    (A) all acts and omissions committed, aided,
    abetted, counseled, commanded, induced,
    procured, or willfully caused by the
    defendant; and (B) in the case of a jointly
    undertaken criminal activity (a criminal plan,
    scheme, endeavor, or enterprise undertaken
    by the defendant in concert with others,
    whether or not charged as a conspiracy), all
    reasonably foreseeable acts and omissions of
    UNITED STATES V. MERCADO-MORENO                  29
    others in furtherance of          the   jointly
    undertaken criminal activity,
    that occurred during the commission of the
    offense of conviction, in preparation for that
    offense, or in the course of attempting to
    avoid detection or responsibility for that
    offense.
    Id. § 1B1.3(a)(1) (2014).
    “With respect to offenses involving contraband
    (including controlled substances), the defendant is
    accountable for all quantities of contraband with which he
    was directly involved and, in the case of a jointly undertaken
    criminal activity, all reasonably foreseeable quantities of
    contraband that were within the scope of the criminal
    activity that he jointly undertook.” Id. § 1B1.3, cmt. n.2
    (2014).      However, the requirement of reasonable
    foreseeability “does not apply to conduct that the defendant
    personally . . . counsels, commands, induces, procures, or
    willfully causes.” Id.
    According to Defendant’s plea agreement to conspiracy
    to manufacture and distribute methamphetamine, and the
    stipulations he made under oath at his plea colloquy, the
    methamphetamine manufactured at the Turlock laboratory
    was “contraband with which [Defendant] was directly
    involved,” and the manufacture of that methamphetamine
    was conduct that Defendant personally “counseled,
    commanded, induced, procured, or willfully caused.” Id.
    § 1B1.3(a)(1)(A), cmt. n.2 (2014); see also Wyche, 741 F.3d
    at 1292–93 (“If the defendant plays a managerial role in a
    drug conspiracy, coordinates drug distribution with other
    managers of the conspiracy and shares in the conspiracy’s
    30           UNITED STATES V. MERCADO-MORENO
    profits, he may be held responsible for the entire drug
    quantity attributable to the conspiracy during the time he was
    a participant.”). And if “the offense involved both a
    substantive drug offense and [a] conspiracy (e.g., sale of five
    grams of heroin and [a conspiracy] to sell an additional ten
    grams of heroin), the total quantity involved shall be
    aggregated to determine the scale of the offense.” USSG
    § 2D1.1, cmt. n.5 (2014).
    Thus, the amount of actual methamphetamine
    manufactured at the Turlock laboratory is relevant conduct
    that must be considered in determining whether Defendant
    is eligible for a sentence reduction in light of Amendment
    782.
    2
    Finally, we turn to the district court’s supplemental
    finding that Defendant was responsible for at least
    4.5 kilograms of actual methamphetamine during the course
    of the conspiracy. Defendant argues that the district court
    erred in relying in part on a chemical analysis report that was
    not part of the record at sentencing. Even assuming, without
    deciding, that the district court erred by considering
    materials beyond those that were before the original
    sentencing court, we hold that any error was harmless
    because 40 pounds of methamphetamine in solution was
    seized from the Turlock laboratory, and the district court
    needed to find only that this solution contained 200 grams of
    actual methamphetamine to meet the threshold for the
    maximum base offense level under Amendment 782. 10
    In light of this conclusion, we do not decide if the district court’s
    10
    broad discretion in holding an evidentiary hearing may be more limited
    UNITED STATES V. MERCADO-MORENO                            31
    In light of the record viewed in its entirety, it was not a
    close call for the district court to conclude that Defendant, in
    addition to distributing 4.3 kilograms of actual
    methamphetamine, more likely than not also manufactured
    another 200 grams of actual methamphetamine during the
    course of the conspiracy. Defendant headed a criminal
    enterprise that manufactured and sold high volumes of actual
    methamphetamine for a number of years. 11 Based on
    Defendant’s leadership role in this high-volume
    methamphetamine          manufacturing      and     distribution
    conspiracy, and in light of the 40 pounds of
    methamphetamine in solution seized from the Turlock
    laboratory, the district court’s finding was not clearly
    erroneous.
    Although the record at sentencing did not contain a
    chemical analysis report of the methamphetamine in solution
    seized from the Turlock laboratory, the district court may
    rely on circumstantial evidence to approximate whether that
    solution could more likely than not produce 200 grams of
    useable actual methamphetamine. See Dudden, 
    65 F.3d at 1471
    ; Valentine, 694 F.3d at 672 (“Where the exact amount
    of drugs involved is unclear, a court may approximate the
    quantity of drugs based on circumstantial evidence, making
    sure to err on the side of caution.” (quotation omitted)). The
    when it considers evidence outside of the original sentencing record
    which would have made a difference in the outcome.
    11
    The PSR noted that Defendant was “involved in the drug business
    for many years,” and “not only was he involved with distributing
    narcotics in the state of California, he was also involved in the drug trade
    in the state of Washington. . . . It appears that once the defendant was
    caught in Washington, he left that area and moved the operation down to
    California.” Defendant did not object to these factual findings at
    sentencing.
    32        UNITED STATES V. MERCADO-MORENO
    court may also “employ alternative means for determining
    the base offense level as allowed by the Guidelines.” United
    States v. Sprague, 
    135 F.3d 1301
    , 1306–07 (9th Cir. 1998).
    “For example, the court may approximate the quantity of
    [the] controlled substance by using its best estimate of the
    production capability of the laboratory where ‘the amount
    seized does not reflect the scale of the offense.’” 
    Id. at 1307
    (citation omitted); see USSG § 2D1.1, cmt. n.5 (2014). “A
    court’s approximation of the amount of drugs involved in a
    particular case is not clearly erroneous if supported by
    competent evidence in the record.” Valentine, 694 F.3d at
    672–73 (quotation omitted).
    Here, the 40 pounds of methamphetamine in solution
    seized from the Turlock laboratory constituted over 18,000
    grams of methamphetamine in solution. See USSG § 2D1.1,
    cmt. n.8(D) (2014) (converting 1 pound to 453.6 grams).
    Even if that amount were a weak solution, it was not clearly
    erroneous to approximate that 18,000 grams of a solution
    containing methamphetamine could more likely than not
    produce at least 200 (or 300) grams of useable actual
    methamphetamine. The district court’s conservative finding
    was supported by competent evidence in the record and was
    “plausible in light of the record viewed in its entirety.”
    Anderson, 
    470 U.S. at 574
    ; see Hernandez, 
    645 F.3d at
    713
    n.3 (“Hernandez has not claimed in this appeal that based on
    the record and the sources cited by the PSR it could not
    reasonably be concluded that he was responsible for more
    than 4.5 kg of crack. Under Dillon, that is where our inquiry
    ends.”).
    Thus, the district court’s conclusion that Defendant was
    responsible for at least 4.5 kilograms of actual
    methamphetamine was not clearly erroneous. Nor was that
    determination contrary to any findings made by the original
    UNITED STATES V. MERCADO-MORENO                         33
    sentencing court, which addressed only the amount that
    Defendant had distributed during the course of the
    conspiracy, and not the amount that he also manufactured.
    We hold that the district court did not abuse its discretion
    in concluding, without a hearing, that Defendant was
    ineligible for a sentence reduction under § 3582(c)(2)
    because Amendment 782 did not lower his applicable
    guideline range. See USSG § 1B1.10(a)(2)(B) (2014). 12
    AFFIRMED.
    12
    We note that, even if Defendant were eligible for a sentence
    reduction because Amendment 782 lowered his applicable guideline
    range, the district court still had discretion—at the second step of the
    Dillon analysis—to decline to reduce his sentence based on the
    applicable § 3553(a) factors and the circumstances of the case. See
    Dillon, 
    560 U.S. at
    826–27.