Plantier v. Ramona Municipal Water District CA4/1 ( 2022 )


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  • Filed 10/24/22 Plantier v. Ramona Municipal Water District CA4/1
    NOT TO BE PUBLISHED IN OFFICIAL REPORTS
    California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for
    publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication
    or ordered published for purposes of rule 8.1115.
    COURT OF APPEAL, FOURTH APPELLATE DISTRICT
    DIVISION ONE
    STATE OF CALIFORNIA
    EUGENE G. PLANTIER, as Trustee,                                      D079529
    etc. et al.,
    Plaintiffs and Appellants,
    (Super. Ct. No.
    v.                                                          37-2014-00083195-CU-BT-CTL)
    RAMONA MUNICIPAL WATER
    DISTRICT,
    Defendant and Respondent.
    APPEAL from an order of the Superior Court of San Diego County,
    Gregory W. Pollack, Judge. Affirmed.
    Patterson Law Group, James R. Patterson and Jennifer M. French;
    Carlson Lynch and Todd D. Carpenter for Plaintiffs and Appellants Eugene
    G. Plantier, as Trustee of the Plantier Family Trust, Progressive Properties
    Incorporated and Premium Development, LLC.
    Procopio, Cory, Hargreaves & Savitch, John D. Alessio, Adriana R.
    Ochoa and Gregory V. Moser for Defendant and Respondent.
    Hanson Bridgett, Adam W. Hofmann and Sean G. Herman for
    California Association of Sanitation Agencies as Amicus Curiae on behalf of
    Defendant and Respondent.
    Appellants Eugene G. Plantier as trustee of the Plantier Family Trust,
    Progressive Properties Incorporated (at times, Progressive), and Premium
    Development, LLC (at times, Premium Development) brought a putative
    class action against respondent Ramona Municipal Water District (District),
    seeking declaratory and monetary relief for District’s alleged violation of
    Proposition 218 (Cal. Const., art. XIII D, § 6 1) in its method of setting sewer
    charges. They appeal an order in which the trial court decertified their class
    action on grounds of an irreconcilable conflict among class members, based in
    part on the court’s sua sponte reconsideration of a 2015 order granting class
    certification. Plaintiffs contend the court abused its discretion in
    reconsidering the class certification order. They further contend the court
    erred because (1) they pleaded that the sewer service charges exceeded the
    funds required to provide the service, and thus the entire class was
    overcharged; (2) there was no conflict of interest among class members; and
    (3) District did not meet its burden on its decertification motion. Plaintiffs
    finally contend the court abused its discretion by failing to permit them to file
    a renewed class certification motion or amend the class definition or claims.
    We affirm the order.
    FACTUAL AND PROCEDURAL BACKGROUND
    District provides water and wastewater (sewer) services to businesses
    and residents in an unincorporated area of San Diego County. (See Plantier
    v. Ramona Municipal Water Dist. (2019) 
    7 Cal.5th 372
    , 376 (Plantier).) It
    1    References to section 6 are to article XIII D of the California
    Constitution.
    2
    charges for sewer service based on estimated wastewater capacity needs, flow
    and strength for different customer types or classes. District uses an
    “Equivalent Dwelling Unit” (EDU) system, levying fixed sewer rates based on
    the number of EDU’s assigned to the particular type of development. An
    EDU is a measure representing the daily usage of a typical single family
    home (200 gallons per day of wastewater flow and 200 milligrams per liter
    each of biological oxygen demand and suspended solids). EDU’s are assigned
    to each property based on the type of use and the property’s estimated
    wastewater system capacity needs. Each parcel connected to the sewer
    system is charged for service by multiplying the fixed sewer service charge
    per EDU by the number of EDU’s assigned to the parcel.
    In November 2013, Plantier and Progressive presented a claim against
    District, attaching and incorporating a draft complaint “stat[ing] the factual
    allegations upon which th[e] claim [was] based.” The complaint alleged that
    District’s EDU system “does not meet the requirements set forth in . . .
    Section 6(b)(3) . . . and related statutory requirements” and thus the fees
    were unlawful and invalid. It alleged the sewer service charge was subject to
    section 6(b)(3), and in violation of that section, the charge was “imposed
    based solely on EDU[’]s, without regard to actual wastewater use, a
    property’s proportional burden on the wastewater system, or the actual cost
    of providing a property with wastewater service.” The complaint alleged that
    the lack of a rational relationship between the sewer charge and actual
    wastewater use “resulted in the systematic overcharge of wastewater
    consumers for whom the proportional cost of providing their property with
    wastewater service is less than their EDU-based [sewer charge].” It also
    alleged District’s connection fees were invalid, as they were also “imposed on
    a per-EDU basis without regard to the cost of ‘the physical facilities
    3
    necessary to make a . . . sewer connection’ ” and thus did not meet the
    definition of Government Code section 66013, subdivision (b).
    In January 2014, after District rejected the claim, plaintiffs filed a
    putative class action complaint alleging in part that District’s EDU billing
    system violated Proposition 218. The operative first amended complaint,
    brought on behalf of all District customers who paid a sewer service charge
    on or after November 22, 2012, sought declaratory relief as well as damages
    in the form of a refund of the assertedly unlawful charges. Plaintiffs
    repeated their allegations concerning how District’s charges violated section
    6(b)(3). They again alleged that the lack of a rational relationship between
    the sewer charge and actual wastewater use “resulted in the systematic
    overcharge of wastewater consumers for whom the proportional cost of
    providing their property with wastewater service is less than their EDU-
    based [sewer charge].”2
    Plaintiffs successfully moved for and obtained certification of the
    requested class before Judge Timothy Taylor. In part, plaintiffs argued
    District’s liability could be determined “ ‘in one stroke’ ” because it had
    uniformly applied its arbitrary EDU schedule and EDU-based charges to all
    parcels connected to the sewer system during the class period, the charges
    were assessed in the same manner, and all of those charges violated section
    6(b)(3). Judge Taylor ruled common issues—namely, whether the EDU-based
    2     Plaintiffs dropped their allegations concerning Government Code
    section 66013 with regard to District’s connection fees.
    4
    charges violated section 6(b)(3)—predominated over individual issues.3
    Judge Taylor ruled the proposed class was ascertainable and numerous,4
    3      On this point, Judge Taylor’s ruling states: “Plaintiffs’ lawsuit is based
    on the contention that all [sewer charges] assessed on all parcels in the
    [District] violate . . . [s]ection 6(b)(3) . . . given the [sewer charges] are based
    on an EDU system that is not rationally related to actual water use. . . . The
    common issue of whether [District’s] EDU-based [sewer charge] violates . . .
    [s]ection 6(b)(3) . . . will predominate over individual issues. The evidence
    presented in the motion preponderates in favor of a finding that class-wide
    issues will predominate. [¶] In this respect, [District] uniformly applied its
    EDU-based [sewer charges] to all parcels connected to the sewer system
    throughout the class period. . . . All parcels are given an EDU value based
    on the Schedule of EDU[’]s. . . . All parcels are then assessed the fixed
    [sewer charge] multiplied by the number of EDU[’]s assigned to the parcel.
    . . . The [sewer charge] is assessed the same in both the Santa Maria and
    San Vicente Sewer Service Areas, with the parcels assigned a number of
    EDU[’]s, and the [sewer charge] is assessed based on the schedule of EDU[’]s.
    . . . And there is no difference on how the [sewer charges] for each service
    area are billed. . . . [District’s] contention that the Bartle Wells report
    provided a rational basis under Prop[osition] 218 for the EDU-based [sewer
    charges] is susceptible to class-wide determination ‘in one stroke.’ [(]Wal-
    Mart v. Dukes [(2011)] 
    131 S. Ct. 2541
    , 2551.[)]”
    4      The court ruled: “[District] has records of the parcel number and owner
    name for each of the parcels subject to the [sewer charge] during the class
    period. . . . The parcel owners should be identifiable through public records
    of ownership. Any need to ascertain the identity of those who actually paid
    the [sewer charge] may be obtained through notice to the parcel owners or
    other discovery modalities. [¶] The proposed class is numerous. There were
    1750 parcels in the Santa Maria Sewer Service Area and 5141 parcels in the
    San Vicente Sewer Service Area in the July 2014 assessment roll.”
    5
    that plaintiffs were adequate class representatives,5 and that the plaintiffs’
    claims were typical of the class, as plaintiffs and the class members were
    assigned EDU values and assessed sewer charges based on that value. Judge
    Taylor found no present conflict of interest among the class members, ruling:
    “To the extent there is a potential for conflict among the class members, the
    matter may be resolved later. A mere potential conflict is not a ground for
    denying certification. . . . However, if a conflict in fact arises, the class action
    may be decertified.”
    After a bench trial, the court ruled plaintiffs failed to meet an
    exhaustion of administrative remedies requirement in Proposition 218
    because none of them had participated in a Proposition 218 rate increase
    hearing. (Plantier, supra, 7 Cal.5th at p. 379.) This court reversed, and the
    California Supreme Court in Plantier affirmed that decision. (Id. at p. 390.)
    5      The court ruled: “[Plaintiffs] declare that they have paid the [sewer
    charges] based on [District’s] EDU system during the class period. . . . They
    also state that they understand the claims in this lawsuit, the nature of those
    claims, and that they ‘have to cooperate with my attorneys and treat the
    interests of the proposed class members the same as I would my own.’ . . .
    They declare that they are ‘willing to serve as a representative of other
    persons who have paid’ the [sewer charge] ‘in this lawsuit by participating in
    any way that is necessary to act in the best interests of the class.’ . . . They
    acknowledge that they cannot have any legal conflicts with the class. . . .
    The class representative, through qualified counsel, must be capable of
    ‘vigorously and tenaciously’ protecting the interests of the class members. . . .
    They make this showing. Plaintiffs may represent the customers in the San
    Vicente Sewer Service Area [even though they are rate payers in the Santa
    Maria Sewer Service Area] since [District] admits it assesses the EDU-based
    [sewer charge] in the same manner in both the San Vicente and Santa Maria
    Sewer Service Areas. . . . [District’s] perceptions regarding the true motives
    of Mr. Plantier . . . may ultimately impact the level of success enjoyed by the
    class, but do not prevent certification.”
    6
    Following remand, plaintiffs challenged Judge Taylor and the matter
    was reassigned to Judge Gregory Pollack, who notified the parties the court
    had concerns over a conflict of interest between class members who
    underpaid for sewer services and those who overpaid. Judge Pollack
    eventually granted District leave to file a motion to decertify the class.
    In its decertification motion, District argued the calculation of sewer
    service charges was a “zero-sum” scenario. It argued the appellants’ class
    “includes both harmed ratepayers who were allegedly overcharged, and
    unharmed—indeed, benefitted—ratepayers who (if Plaintiffs’ theory is
    correct) were allegedly undercharged. Courts have consistently found that
    grouping harmed and unharmed persons into a class definition makes the
    class imprecise, overbroad, and unable to meet the ascertainability prong
    necessary for maintaining a class action.” District maintained the plaintiffs’
    proportionality challenge, as well as their claim for a refund, created fatal
    conflicts of interest among the class members, defeating any claim that they
    had a well-defined community of interest. According to District, the proposed
    relief—refunding charges to overpaying customers—would permit it to seek
    back charges from customers who underpaid, underscoring the current and
    potential conflicts. It argued that awarding all charges paid since 2012
    would amount to an over $50 million judgment that District would have to
    pay by assessing charges to current ratepayers, creating another conflict.
    District also argued plaintiffs failed to show sufficient causation for liability
    of damages to justify certification, and they could not show they had suffered
    overcharges or that their claims were consistent with all other ratepayers,
    thus they were inadequate class representatives. Finally, they argued
    because Plantier and Orrin Day, the owner of Progressive and Premium
    7
    Development, were commercial property owners who did not live in Ramona,
    their interests were antagonistic to the majority of class members.
    District supported its motion with declarations from Alex Handlers, a
    principal at an independent public financial advisory firm with expertise in
    water and sewer rates and finance, Michael Metts, a professional engineer at
    a firm with a wastewater practice and Craig Schmollinger, District’s acting
    general manager and chief financial officer. It attached deposition excerpts
    from various putative class members, some of whom testified they would be
    upset if their sewer rates increased as a result of the lawsuit, and would want
    their lawyers to stop prosecuting the lawsuit if that were the case.
    In opposition, plaintiffs argued District did not identify new law or
    evidence of changed circumstances to justify decertifying the class. They
    asserted District did not present evidence, much less new evidence, showing
    an actual conflict among the class or showing any class member had been
    undercharged during the class period. Further, plaintiffs argued District
    could not meet its burden to prove compliance with Proposition 218, in part
    because class members were charged over $8 million more than the cost of
    the service provided during the class period. Plaintiffs maintained District
    made the same “future conflict” argument in opposing their original class
    certification motion by way of the zero-sum game theory of undercharges and
    overcharges, its assertedly new evidence submitted via declaration merely
    repeated the point, and that such speculative, future conflicts were an
    insufficient basis to decertify the class. They argued that District’s future
    conflict argument failed because District collected inflated or excess
    revenues. Finally, plaintiffs argued the minority class members’ interests
    could not defeat the right of the majority of customers to enforce Proposition
    218; that class members had no legitimate interest in furthering continuing
    8
    violations of Proposition 218. Plaintiffs based their excess revenue
    arguments in part on sworn declarations from consultant and accountant
    Daniel Werner and consultant Christine DeMaster.
    In reply, District objected to both the entirety and portions of
    DeMaster’s and Werner’s declarations on grounds, among others, of
    relevance, hearsay, and lack of expert qualifications. In part, it argued the
    court should disregard plaintiffs’ theory that its sewer service charges
    exceeded the funds required to provide the service—a violation of section
    6(b)(1)—because it was a new legal theory not pleaded in their operative
    complaint. District also argued plaintiffs’ theory went beyond its government
    claim, which was based on the proportionality requirement of section 6(b)(3).
    It argued plaintiffs did not rebut its assertion that the class was
    unascertainable because it included harmed and unharmed class members,
    nor did they meet their burden to establish causation for liability and
    damages for all class members.
    The court decertified the class. Sustaining District’s objections to the
    DeMaster and Werner declarations and granting District’s requests for
    judicial notice, it ruled the class as certified created an irreconcilable conflict
    9
    among class members.6 It found the single common issue—whether
    District’s EDU methodology was legally permissible under section 6(b)(3)—
    did not predominate over the many individual issues. At the same time the
    court ruled on District’s decertification motion, it sua sponte reconsidered
    Judge Taylor’s 2015 order granting class certification, considering only the
    evidence before the court in 2015. Judge Pollack specifically ruled he had the
    inherent authority to do so as long as he gave the parties an opportunity to
    fully brief the matter, and considered only the evidence originally submitted
    to Judge Taylor. Judge Pollack ruled Judge Taylor’s class certification order
    was erroneous: “Changing the methodology for determining proportionate
    allocation of sewer charges does not simply create ‘[a] mere potential conflict’;
    it creates an absolute, irreconcilable conflict ab initio. . . . [I]t is evident that
    Judge Taylor failed to appreciate the certainty of the conflict created by his
    certifying a class consisting of ‘Ramona Municipal Water District customers
    6      In part, the court reasoned: “[T]he fatal defect in the previous
    certification of the class arose from a failure to fully appreciate that Plantier’s
    challenge to the status quo method for determining proportionate sewer
    system charges for individual payors created an inherent and irreconcilable
    conflict between those class members whose proportionate shares go up and
    those class members whose proportionate shares necessarily go down, i.e.,
    since the ‘pie’ from which proportionality must be allocated always totals 100
    [percent], a ‘zero[-]sum’ game is created if any payer’s proportionate share is
    changed. If one class member payer’s proportion is reduced, necessarily other
    class member payor(s)’ proportion(s) must increase. A lawsuit like this,
    premised upon ‘robbing Peter to pay Paul’ is inherently improper when Peter
    and Paul are both plaintiffs in the same lawsuit (and represented by the
    same law firm). Clearly, a challenge to the status quo as to how
    proportionate allocation is calculated necessarily creates winners and losers
    among class members, with the winners necessarily gaining at the direct
    expense of the losers. It bears repeating: a lowering of a class member’s
    proportionate sewer charges necessarily means an increase in other class
    member(s)’ proportionate sewer charges.”
    10
    who paid a sewer service charge on or after November 22, 2012.’ It is an
    abuse of discretion to certify a class action where there is ‘evidence of a
    conflict among proposed class members that goes to the very subject matter
    of the litigation.’ [Citation.] ‘[l]f the conflict of interest actually arises and it
    is irreconcilable, the class action may be decertified.’ [Citation.] This is such
    a case. [¶] Similarly, because some class members have been allegedly
    harmed by [District’s] use of the subject EDU assignment method, others
    have necessarily benefitted based upon the zero-sum scenario, thereby
    creating a class containing both 'harmed’ and ‘unharmed’ members. Courts
    have ‘consistently denied certification where class definitions include both
    harmed and unharmed members.’ [Citation.] It should be noted that other
    than claiming that [District’s] methodology is illegal, Plantier has never
    proposed a specific alternative methodology from [which] the ‘winners and
    losers’ and ‘harmed or unharmed’ class members could be ascertained and
    differentiated.”
    Judge Pollack found plaintiffs’ argument concerning excess revenues
    flawed in part because it stated a violation of section 6(b)(1), a theory not
    pleaded in their operative complaint: “The original governmental tort claim,
    the original complaint, and the legally operative first amended complaint . . .
    contain no facts or allegations that [District’s] sewer service charges exceeded
    the total cost of providing services, and, in fact, they do not even mention
    [section] 6(b)(1). Since the filing of this lawsuit on January 14, 2014, the
    thrust of Plantier’s attack has been under the proportionality requirement
    found in [section] 6(b)(3).” Judge Pollack ruled for that reason the theory was
    not cognizable on the merits of class certification, but even if it were, it would
    not resolve the conflict among class members. Judge Pollack ruled that
    permitting class counsel at that stage to pare down the class to only members
    11
    whose proportionate allocations would be reduced would likely result in the
    law firm’s ethical conflict of interest “since such would constitute
    representation of clients (the ‘winners’) in an action adverse to the interests
    of the abandoned former clients (the ‘losers’) in the same action.”
    Plaintiffs filed this appeal.
    DISCUSSION
    I. Application of the Death Knell Doctrine
    We begin by addressing District’s contention that the trial court’s order
    decertifying the class is not an immediately appealable “death knell” order.
    Pointing to case authority stating the death knell concept is “tightly defined
    and narrow” (Farwell v. Sunset Mesa Property Owners Assn., Inc. (2008) 
    163 Cal.App.4th 1545
    , 1547), District maintains the death knell doctrine is
    inappropriate in cases where individual actions can be filed and pursued, and
    cites authorities declining to apply the doctrine where the order did “not
    produce a terminal result . . . .” (Haro v. City of Rosemead (2009) 
    174 Cal.App.4th 1067
    , 1070 (Haro); see also Naranjo v. Spectrum Security
    Services, Inc. (2019) 
    40 Cal.App.5th 444
    , 478 [ruling was “ ‘not . . .
    tantamount to dismissal’ ”], affd. in part & revd. in part in Naranjo v.
    Spectrum Security Services, Inc. (2022) 
    13 Cal.5th 93
    , 126.) According to
    District, because the plaintiffs here incurred sewer service charges that are
    more than nominal (approximately $50,764 for Plantier, $46,521 for
    Progressive, and $53,748 for Premium Development), they have a financial
    incentive to maintain the action and thus the doctrine does not apply.
    Notably, District has not moved to dismiss the appeal on this ground; we
    conclude in any event there is no basis to do so.
    The death knell doctrine is an exception to the “one final judgment”
    rule, under which an appeal may be taken only from a final judgment in the
    12
    entire action. (In re Baycol Cases I and II (2011) 
    51 Cal.4th 751
    , 754, 756,
    757; see Fierro v. Landry’s Restaurant Inc. (2019) 
    32 Cal.App.5th 276
    , 280,
    fn. 4.) The doctrine “allows an immediate appeal of an order that entirely
    terminates class claims while allowing individual claims to proceed.” (Fierro,
    at p. 280, fn. 4.) In fact, the “preservation of individual claims is an essential
    prerequisite to application of the death knell doctrine . . . .” (Baycol, at p.
    754.) “Because such an order ‘effectively [rings] the death knell for the class
    claims,’ it is essentially ‘a final judgment on those claims.’ ” (Fierro, at p. 280,
    fn. 4, citing Baycol, at p. 757 & Daar v. Yellow Cab Co. (1967) 
    67 Cal.2d 695
    ,
    699 [order denying class certification “is tantamount to a dismissal of the
    action as to all members of the class other than plaintiff”].) The order here—
    decertifying the entire class—is such an appealable death knell order.
    District’s cited authorities do not convince us otherwise. In Naranjo v.
    Spectrum Security Services, Inc., 
    supra,
     
    40 Cal.App.5th 444
    , the Court of
    Appeal, relying on In re Baycol Cases I and II, supra, 
    51 Cal.4th 751
    , held an
    order was not immediately appealable under the death knell doctrine where
    the trial court certified meal break, waiting time penalty, and itemized wage
    statement penalty classes, but denied certification for a rest break class.
    (Naranjo, at p. 478.) That ruling was “ ‘not . . . tantamount to dismissal’ ” of
    the class claims. (Ibid.) Naranjo confirmed that “ ‘only an order that entirely
    terminates class claims is appealable.’ ” (Ibid., quoting Baycol, at pp. 757-
    758.) District does not explain what aspect of Judge Pollack’s order retains
    part of the class as in Naranjo, nor can it, as the order eliminated those
    claims in their entirety.
    Haro, supra, 
    174 Cal.App.4th 1067
     involved an action under the Fair
    Labor Standards Act of 1938 (FLSA). (Id. at p. 1070.) That law permits
    actions brought “ ‘by any one or more employees for and in behalf of himself
    13
    or themselves and other employees similarly situated’ ” and further contains
    an “ ‘opt-in’ ” provision prohibiting an employee from being a FLSA action
    plaintiff “unless he gives his consent in writing . . . and such consent is filed
    in the court in which such action is brought.” (See Haro, at p. 1071, quoting
    title 29 of the United States Code section 216(b), italics omitted.) Because of
    the special opt-in feature, the plaintiffs’ challenge relating to their
    compensation under the FLSA could not as a matter of law be brought as a
    class under California law, as that feature was “irreconcilable” with a class
    action. (Haro, at pp. 1071, 1075 [an “FLSA action has a procedural
    jurisprudence distinct from that which governs class actions”].) It was in this
    specialized context that the Court of Appeal dismissed the appeal from the
    order denying class certification, since, among other reasons, the order was
    not the death knell of the appellants’ action: “The order does not produce a
    terminal result, i.e., there [was] no reason why the action cannot go forward
    with appellants as plaintiffs” and specifically, “there [was] nothing to prevent
    this action going forward as an opt-in, collective FLSA action.” (Id. at p.
    1078, italics added.) Thus, there was “no question that this FLSA action as it
    is presently constituted can go forward to trial,” that is, as an action with
    multiple employees as plaintiffs, so long as they opted in. (Ibid.)
    Similarly, Munoz v. Chipotle Mexican Grill (2015) 
    238 Cal.App.4th 291
    involved an action for civil penalties under the Private Attorneys General Act
    (PAGA), under which plaintiffs do not sue as individuals, but as
    representatives of the state and on behalf of similarly aggrieved employees.
    (Id. at pp. 294, 310.) The appellate court dismissed the appeal from an order
    denying class certification because the PAGA claims on behalf of multiple
    employees remained (with the potential for significant civil penalties if
    successful), and thus the death knell doctrine did not apply. Finding the
    14
    unique circumstances there (id. at p. 310) similar to Haro, supra, 
    174 Cal.App.4th 1067
    , Munoz held the plaintiffs had “ample financial incentive to
    pursue the remaining representative claims under the PAGA and, thereafter,
    pursue their appeal from the trial court’s order denying class certification.”
    (Munoz, at p. 311.) Thus, “[d]enial of class certification where the PAGA
    claims remain in the trial court would not have the ‘legal effect’ of a final
    judgment under the reasoning of Baycol and Daar.” (Ibid., fns. omitted.)7
    Unlike the FLSA action in Haro or the PAGA action in Munoz, absent
    class certification, the present action against District cannot proceed with the
    individuals acting on behalf of other unnamed class members. The order
    decertifying the class in this case does not have the special circumstances of
    Haro and Munoz; it is therefore immediately appealable.
    II. Court’s Authority to Sua Sponte Reconsider the Class Certification Order
    Plaintiffs contend the trial court abused its discretion in sua sponte
    reconsidering Judge Taylor’s factual finding in his prior certification order
    concerning the asserted conflict of interest among class members. According
    7     Farwell v. Sunset Mesa Property Owners Assn., Inc., 
    supra,
     
    163 Cal.App.4th 1545
     is entirely inapposite, as it involved an appeal by plaintiffs
    from an order sustaining a demurrer to their action with leave to amend
    against a defendant class. (Id. at pp. 1547, 1549; see Williams v. Impax
    Laboratories, Inc. (2019) 
    41 Cal.App.5th 1060
    , 1070 [distinguishing Farwell].)
    Farwell dismissed the appeal, in part holding the order neither demolished a
    class action nor did it dispose of class claims, so it was not appealable as a
    death knell order. (Farwell, at p. 1552; see Williams, at p. 1070.) Farwell
    also explained that “the gist of the death knell doctrine is that the denial of
    class action certification is the death knell of the action itself, i.e., that
    without a class, there will not be an action or actions, as is true of cases when
    the individual plaintiff’s recovery is too small to justify pursuing the action.”
    (Farwell, at p. 1552.) We do not read Farwell’s use of an example as a
    limitation on the doctrine or a holding that for the death knell doctrine to be
    applicable, the individual plaintiffs’ potential recovery must be de minimis.
    15
    to plaintiffs, there is no authority for the court’s reconsideration of Judge
    Taylor’s factual findings, as reconsideration is authorized when “ ‘there has
    been a change of law’ ” pursuant to Code of Civil Procedure section 1008,
    subdivision (c). Plaintiffs also complain the court abused its discretion given
    the prejudice they have suffered from delay, pointing to the procedural
    history of the case after remand and the various ex parte applications and
    continuances, while at the same time conceding “the parties agreed to extend
    the hearing on [District’s] motion multiple times from December 2020 to July
    2021.”8 They assert they spent thousands of dollars in expert witness fees
    and attorney fees and costs associated with their opposition, and argue
    “[a]llowing reconsideration of the class certification order over six years later
    [after they filed the action], and over 500 days after the trial court initially
    expressed concern with the ruling, is fundamentally unfair and an abuse of
    discretion.”
    Plaintiffs’ proposed limitation on the court’s authority to sua sponte
    reconsider its order is based on LeFrancois v. Goel (2005) 
    35 Cal.4th 1094
    .
    They assert, citing LeFrancois, at page 1097, that in its opinion, the
    California Supreme Court had “ ‘accepted’ ” the Court of Appeal’s finding
    “ ‘that notwithstanding either [Code of Civil Procedure] section 1008 or [Code
    of Civil Procedure] section 437c[, subdivision](f)(2), [the second judge] had
    inherent power to exercise his “constitutionally derived authority to
    8     Plaintiffs also assert that District filed its decertification motion
    beyond the court’s deadline for doing so, but cite no authority demonstrating
    the court erred by later resetting the motion hearing date at District’s ex
    parte request. We disregard assertions unsupported by authority or reasoned
    legal argument. (Orange County Water Dist. v. Sabic Innovative Plastics US,
    LLC (2017) 
    14 Cal.App.5th 343
    , 383 [“ ‘ “The absence of cogent legal
    argument or citation to authority allows this court to treat the contention as
    waived” ’ ”]; DP Pham, LLC v. Cheadle (2016) 
    246 Cal.App.4th 653
    , 674.)
    16
    reconsider the prior interim ruling and correct an error of law on a dispositive
    issue.” ’ ” Plaintiffs say the high court’s “determination makes sense given
    the language in Code of Civil Procedure section 1008, subdivision (c), which
    allows a court to reconsider a prior order when ‘there has been a change of
    law.’ ” This argument appears to suggest that LeFrancois somehow endorsed
    a limitation on a lower court’s authority to reconsider prior orders to
    circumstances involving new or changed law.
    The argument both misconstrues and misunderstands LeFrancois’s
    holding. There, the California Supreme Court accepted the Court of Appeal’s
    finding that a party’s second summary judgment motion was based on the
    same law and evidence, and thus violated Code of Civil Procedure sections
    1008 and 437c. (LeFrancois v. Goel, 
    supra,
     35 Cal.4th at p. 1099.) It went on
    to review the significance of that finding on the trial court’s authority to
    consider the motion. (Ibid.) LeFrancois held that while Code of Civil
    Procedure sections 1008 and 437c, subdivision (f)(2) limit the circumstances
    in which parties’ may seek reconsideration, they “do not limit the court’s
    ability, on its own motion, to reconsider its prior interim orders so it may
    correct its own errors.” (LeFrancois, at p. 1107; accord, Brown, Winfield &
    17
    Canzoneri, Inc. v. Superior Court (2010) 
    47 Cal.4th 1233
    , 1248 [discussing
    LeFrancois].)9
    LeFrancois specifically addressed the language of Code of Civil
    Procedure section 1008, subdivision (c), which states that a court on its own
    motion may reconsider a prior order “if [it] at any time determines that there
    has been a change of law . . . .” (LeFrancois v. Goel, 
    supra,
     35 Cal.4th at p.
    1105.) It acknowledged that language contained a “negative implication that
    the court may not reconsider such an order absent a change in the law” but
    declined to give it effect in view of a different negative implication in
    subdivision (e) that pointed “more strongly” to a narrow interpretation of the
    statute. (Id. at p. 1106 [“we cannot give effect to both contradictory negative
    implications”].) It instead held there was “no hint that the Legislature
    wanted to hinder the courts’ ability to act . . . .” (Ibid.) Consequently,
    subsequent cases hold that “[e]ven without a change of law, a trial court may
    exercise its inherent jurisdiction to consider an interim ruling.” (Pinela v.
    Neiman Marcus Group, Inc. (2015) 
    238 Cal.App.4th 227
    , 237; see also Chen v.
    Valstock Ventures, LLC (2022) 
    81 Cal.App.5th 957
    , 968 [quoting Pinela];
    State of California v. Superior Court (Flynn) (2016) 
    4 Cal.App.5th 94
    , 100
    9      Subsequent to LeFrancois v. Goel, 
    supra,
     
    35 Cal.4th 1094
    , the high
    court pointed out “it is immaterial what may have triggered a trial court’s
    insight that its interim order might be erroneous: . . . ‘If a court believes one
    of its prior interim orders was erroneous, it should be able to correct that
    error no matter how it came to acquire that belief’ ” as long as it meets
    certain procedural protections. (Brown, Winfield & Canzoneri, Inc. v.
    Superior Court, 
    supra,
     47 Cal.4th at p. 1249.) Brown cited the holding of In
    re Marriage of Barthold (2008) 
    158 Cal.App.4th 1301
     for the proposition that
    a reconsideration motion might violate Code of Civil Procedure section 1008 if
    unsupported by new legal authority or new evidence, but such a motion may
    nevertheless inspire the trial court to reconsider its previous decision on its
    own motion. (Brown, at p. 1249, citing Marriage of Barthold, at p. 1308.)
    18
    [same].) There is no basis in LeFrancois for plaintiffs’ proposed limitation on
    Judge Pollack’s power to sua sponte reconsider Judge Taylor’s order.10
    With respect to prejudice from delay, plaintiffs cite no authority for the
    proposition that a court abuses its discretion by reconsidering a class
    certification order years after it was issued, or that prejudice from delay, if
    shown, justifies maintaining a class. To the contrary, after a class is
    certified, “a trial court retains flexibility to manage the class action, including
    to decertify a class if ‘the court subsequently discovers that a class action is
    not appropriate.’ ” (Kight v. CashCall, Inc. (2014) 
    231 Cal.App.4th 112
    , 136;
    accord, Duran v. U.S. Bank National Assn. (2014) 
    59 Cal.4th 1
    , 29-30
    [“decertification must be ordered whenever a trial plan proves unworkable”].)
    There is no basis to conclude Judge Pollack abused his discretion by
    reconsidering the class certification order strictly due to the passage of time
    between the original order and District’s decertification motion. In sum,
    plaintiffs have not demonstrated Judge Pollack abused his discretion
    procedurally by sua sponte reconsidering Judge Taylor’s order.
    10     Plaintiffs do not argue Judge Pollack was precluded from reviewing
    Judge Taylor’s order under the general rule that prevents a judge from
    reconsidering or overruling the interim ruling of another judge. (See In re
    Marriage of Oliverez (2015) 
    238 Cal.App.4th 1242
    , 1248.) Because they do
    not invoke this rule, we have no occasion to decide whether the matter falls
    within one of the narrow exceptions—the first judge being unavailable to
    reconsider the motion—by virtue of plaintiffs’ challenge to Judge Taylor.
    (See ibid.; and see In re Marriage of Furie (2017) 
    16 Cal.App.5th 816
    , 831,
    fn. 10 [transfer to another department of the same superior court does not
    render a judge unavailable for purposes of Code of Civil Procedure section
    1008].)
    19
    III. Merits of Decertification Order
    We turn to the merits of the court’s order. Plaintiffs contend the court
    erred by decertifying the class based on two grounds that assertedly rest on
    improper criteria or erroneous legal assumptions. They also contend the
    court erred by finding District met its burden to establish decertification.
    After a brief discussion of legal principles of class certification and
    decertification, as well as relevant sections of Proposition 218, we address
    these grounds in turn.
    A. Class Action Certification and Decertification
    A party seeking class treatment “ ‘must demonstrate the existence of an
    ascertainable and sufficiently numerous class, a well-defined community of
    interest, and substantial benefits from certification that render proceeding as
    a class superior to the alternatives. [Citations.] “In turn, the ‘community of
    interest requirement embodies three factors: (1) predominant common
    questions of law or fact; (2) class representatives with claims or defenses
    typical of the class; and (3) class representatives who can adequately
    represent the class.’ ” ’ ” (Espejo v. The Copley Press, Inc. (2017) 
    13 Cal.App.5th 329
    , 352, quoting Brinker Restaurant Corp. v. Superior
    Court (2012) 
    53 Cal.4th 1004
    , 1021; see also Noel v. Thrifty Payless, Inc.
    (2019) 
    7 Cal.5th 955
    , 968-969.)
    “Typically, ‘[t]he adequacy of representation component of the
    community of interest requirement for class certification comes into play
    when the party opposing certification brings forth evidence indicating
    widespread antagonism to the class suit.’ [Citation.] ‘ “It is axiomatic that a
    putative representative cannot adequately protect the class if his interests
    are antagonistic to or in conflict with the objectives of those he purports to
    represent. But only a conflict that goes to the very subject matter of the
    20
    litigation will defeat a party’s claim of representative status.” ’ ” (Espejo v.
    The Copley Press, Inc., supra, 13 Cal.App.5th at p. 352.)
    As we have stated, after certification, a trial court retains flexibility to
    manage the class action, including to decertify a class if a class action is no
    longer appropriate. (Espejo v. The Copley Press, Inc., supra, 13 Cal.App.5th
    at p. 353; Kight v. CashCall, Inc., supra, 231 Cal.App.4th at pp. 125-126.) “To
    prevail on a decertification motion, a party must generally show ‘new law or
    newly discovered evidence showing changed circumstances. [Citation.] A
    motion for decertification is not an opportunity for a disgruntled class
    defendant to seek a do-over of its previously unsuccessful opposition to
    certification. “Modifications of an original class ruling, including
    decertifications, typically occur in response to a significant change in
    circumstances, and ‘[i]n the absence of materially changed or clarified
    circumstances . . . courts should not condone a series of rearguments on the
    class issues[.]’ [Citation.]” ’ [Citation.] A ‘class should be decertified “only
    where it is clear there exist changed circumstances making continued class
    treatment improper.” ’ ” (Espejo, at p. 353, Kight v. CashCall, Inc., at pp.
    125-126.)
    “A party moving for decertification generally has the burden to show
    that certification is no longer warranted, and courts have broad discretion in
    ruling on this issue. Trial courts ‘ “ ‘are ideally situated to evaluate the
    efficiencies and practicalities of permitting group action’ ” ’ and therefore are
    ‘ “ ‘afforded great discretion’ ” ’ in evaluating the relevant factors. [Citation.]
    However, ‘[d]ecertification resting on improper legal criteria or an incorrect
    assumption is an abuse of discretion. [Citation.] . . . We thus review only
    the reasons the court stated for its order, and we reverse if the reasons do not
    support [it].’ ” (Kight v. CashCall, Inc., supra, 231 Cal.App.4th at p. 126.)
    21
    We afford the court’s decision “great deference on appeal, reversing only for a
    manifest abuse of discretion.” (Noel v. Thrifty Payless, Inc., supra, 7 Cal.5th
    at pp. 967-968.)
    When a court reconsiders a class certification order, we likewise review
    the court’s ruling for abuse of discretion. (See, e.g., Simonyan v. Nationwide
    Insurance Company of America (2022) 
    78 Cal.App.5th 889
    , 895; New York
    Times Co. v. Superior Court (2005) 
    135 Cal.App.4th 206
    , 212.)
    B. Proposition 218
    Plantier reviewed the history of Proposition 218 and its procedural and
    substantive limitations. (Plantier, supra, 7 Cal.5th at pp. 380-382.) The
    voters approved Proposition 218 to address local governments’ tendency to
    label certain special taxes as fees, charges or assessments so as to circumvent
    prior restrictions on the imposition of those taxes. (Plantier, at pp. 380-381.)
    In part, Proposition 218 added article XIII D to the California Constitution,
    addressing property-based taxes and fees. (Id. at p. 381.) The article
    imposes procedural prerequisites to imposing or increasing any fee or charge
    and also distinct substantive limitations on property-related fees. (Ibid.)
    Under the substantive limitations contained in subdivision (b) of
    section 6, “(1) revenues derived from the fee may not exceed the cost of
    providing the property-related service ([art. XIII D], § 6, subd. (b)(1)); (2)
    those revenues may not be used for any purpose other than the one for which
    the fee was imposed (id., § 6, subd. (b)(2)); (3) the amount of the fee ‘shall not
    exceed the proportional cost of the service attributable to the parcel’ (id., § 6,
    subd. (b)(3), italics added); (4) a fee may not be imposed for a service unless
    that service is available to the property owner (id., § 6, subd. (b)(4)); and (5) a
    fee may not be imposed upon property owners for a general governmental
    service, like fire protection, if the service is available to the general public in
    22
    substantially the same manner as it is to property owners (id., § 6, subd.
    (b)(5)).” (Plantier, 7 Cal.5th at p. 382.)
    Plantier explained the distinction between the restrictions relevant
    here: the proportionality requirement of section 6(b)(3) and the cost-of-service
    requirement in section 6(b)(1). The proportionality requirement of section
    6(b)(3) “ ‘ensures that the aggregate fee collected on all parcels is distributed
    among those parcels in proportion to the cost of service for each parcel.’ ”
    (Plantier, supra, 7 Cal.5th at p. 382, quoting Morgan v. Imperial Irrigation
    Dist. (2014) 
    223 Cal.App.4th 892
    , 908.) “The proportionality requirement
    concerns the method used to allocate a property-related service’s aggregate
    cost among fee payors. It is separate from an agency’s obligation not to
    collect more revenue than necessary to provide that service to all identified
    parcels [under section 6(b)(1)].)” (Plantier, at p. 382.) “[S]atisfying each
    subdivision is a different endeavor.” (Plata v. City of San Jose (2022) 
    74 Cal.App.5th 736
    , 750.)
    “ ‘The theme of [section 6(b)(1)] is that fee or charge revenues may not
    exceed what it costs to provide fee or charge services. Of course, what it costs
    to provide such services includes all the required costs of providing service,
    short-term and long-term, including operation, maintenance, financial, and
    capital expenditures. The key is that the revenues derived from the fee or
    charge are required to provide the service, and may be used only for the
    service. In short, the section 6(b)[(1)] fee or charge must reasonably
    represent the cost of providing service.’ ” (Moore v. City of Lemon Grove
    (2015) 
    237 Cal.App.4th 363
    , 368, quoting Howard Jarvis Taxpayers Assn. v.
    City of Roseville (2002) 
    97 Cal.App.4th 637
    , 647-648; see also Wyatt v. City of
    Sacramento (2021) 
    60 Cal.App.5th 373
    , 383.)
    23
    C. Plaintiffs Do Not Allege a Violation of Section 6(b)(1)
    As stated, the trial court based its decertification order in part on a
    finding that plaintiffs could not advocate for class action propriety based on a
    claim of District’s revenue overstatement in violation of section 6(b)(1)
    because they had not pleaded that theory in either their government claim or
    first amended complaint. The lower court’s conclusion is consistent with the
    Plantier court’s characterization of plaintiffs’ operative complaint. After
    distinguishing the two restrictions of section 6(b)(1) and 6(b)(3), and having
    these plaintiffs’ complaint before it, the Plantier court observed that their
    case was brought under section 6(b)(3)’s proportionality requirement:
    “Plaintiffs’ complaint here is that the EDU assignment method does not
    properly allocate costs among parcels served.” (Plantier, supra, 7 Cal.5th at
    p. 382.) We recognize that the question presented here was not before the
    Plantier court, but its observation is still compelling (Hubbard v. Superior
    Court (1997) 
    66 Cal.App.4th 1163
    , 1169 [even if dictum, courts should
    consider California Supreme Court statements persuasive]) and we agree
    with it. As we explain, even liberally construed, there are no allegations in
    plaintiffs’ operative pleading that reasonably state a violation of section
    6(b)(1).
    Plaintiffs concede the first amended complaint does not mention section
    6(b)(1). Indeed, that pleading generally describes the “nature of the action”
    (capitalization omitted) as one in which the District’s EDU billing system
    “does not meet the requirements set forth in . . . [s]ection 6(b)(3)] . . . .”
    Plaintiffs nevertheless point to various allegations made both in their
    government claim and first amended complaint to suggest they adequately
    pleaded revenue overstatement in violation of section 6(b)(1). They say “the
    substantive allegations [of their government claim and first amended
    24
    complaint] relate directly to [section 6(b)(1)]—namely, that the sewer service
    charges exceed the funds required to provide the service.” Plaintiffs further
    point to the liberal standards for permitting amendments of pleadings and
    maintain that given these standards and their allegations giving District
    notice of the “aggregate overcharge,” the court’s ruling cannot stand.
    Plaintiffs’ cited allegations, which we reproduce with our own
    emphasis, do not bear this out. The operative complaint’s allegations are
    targeted to the lack of relationship between the charge and a property
    owner’s water use or proportional cost of providing service to a specific
    property. It alleges District’s EDU schedule is “arbitrary” and assigns EDU
    values “without regard to: (1) the property’s actual wastewater use; and (2)
    the proportional cost of providing that property with wastewater service.”
    (Italics added.) It alleges the EDU is not based on documentation
    “establishing a rational relationship between the EDU values set forth in the
    [s]chedule and actual wastewater use or the proportional cost of providing a
    property with wastewater service.” (Italics added.) Plaintiffs repeatedly
    allege the service charge violates section 6(b)(3) for these reasons, i.e. because
    it is “imposed based solely on EDU[’]s without regard to actual wastewater
    use, a property’s proportional burden on the wastewater system, or the actual
    cost of providing a property with wastewater service.” (Italics added.) The
    complaint alleges “[a] vacant property with little or no actual wastewater use
    is charged the same EDU-based use fee as an equivalent EDU-value property
    with significant wastewater use, despite the measurable difference in the
    proportional cost of providing each property with wastewater service.” (Italics
    added.) It is true that plaintiffs allege District’s “imposition of [the sewer
    service charge] has resulted in the systematic overcharge of [District’s]
    wastewater customers,” but that allegation comes immediately after one that
    25
    states the sewer charge “violates Proposition 218 because it is calculated on a
    per-EDU basis and bears no rational relationship to a parcel’s actual
    wastewater use.” (Italics added.)
    These are not allegations that the wastewater service fee revenues
    collected by District exceed District’s operational, maintenance, financial, or
    capital costs or expenditures to provide the service. And because such
    allegations making out a section 6(b)(1) violation do not appear in plaintiffs’
    government claim, District was not on notice of the “basic factual
    underpinnings” (Plata v. City of San Jose, supra, 74 Cal.App.5th at p. 749, fn.
    6) for such a claim. Accordingly, we do not address plaintiffs’ arguments that
    they may amend their complaint, as they are precluded from asserting the
    theory at this late stage. (Accord, Plata, at pp. 747-752 [plaintiffs who did
    not mention “tiered rates” for water services or implicate section 6,
    subdivision (b)(3) in their government claim, pleadings or motion for class
    certification did not apprise the city defendant that they were attacking its
    tier structure, warranting reversal of the judgment on that claim].) “Clarity
    on such issues is especially critical in Proposition 218 cases because the
    Constitution places the burden on the government to show compliance with
    its requirements. The government cannot do this if claimants are not
    specific.” (Plata, at p. 751.)
    D. The Court Did Not Abuse its Discretion in Granting Reconsideration and
    Decertifying the Class Based on Class Members’ Conflicts of Interest
    Plaintiffs contend the court erred by decertifying the class “based on a
    speculative future conflict that does not, and cannot, exist.” They maintain
    there is “no evidence of even one class member who underpaid their sewer
    service charges in the record,” (emphasis omitted) nor is there evidence or
    law supporting a finding that a class member who previously underpaid could
    26
    be reassessed and forced to pay back-charges for prior years of service.
    Plaintiffs argue a potential future conflict, if it arises, is an issue that can be
    resolved later in the litigation, including by the court modifying the class
    definitions or withdrawing class status to a particular group. They further
    argue there is no evidence some class members may have to pay more in the
    future if the court finds a violation of Proposition 218; rather, according to
    plaintiffs, the evidence shows class-wide overcharges. Plaintiffs assert that
    even if District presented evidence that some ratepayers will pay more, the
    law—as discussed in Capitol People First v. State Dept. of Developmental
    Services (2007) 
    155 Cal.App.4th 676
     (Capitol People First)—will not put
    minority class member interests above the majority of class members’ right to
    enforce Proposition 218.
    Plaintiffs intersperse these arguments with assertions that District’s
    zero-sum game position “necessarily depends on [District] collecting the
    proper amount for the total costs of annual sewer services” or that District’s
    EDU values “have no rational relationship to the actual cost of providing any
    parcels with wastewater service . . . .” They argue elsewhere that District “is
    collecting far more than the amount necessary to rate and maintain the
    sewer system on an annual basis” such that the “entire class has been
    overcharged in an amount equal to a proportional cost of the service
    attributable to each parcel.” We disregard these sorts of assertions for two
    reasons: They are based on the unpleaded theory that District’s rates violate
    section 6(b)(1) because the total revenues exceed the funds required to
    provide the sewer services. They are also based on the declarations of
    Werner and DeMaster to which the court sustained objections and excluded
    from its consideration. Plaintiffs do not present meaningful argument or
    27
    authority challenging the court’s evidentiary ruling to these declarations. 11
    The theory under section 6(b)(1) cannot serve as a basis to maintain the class.
    As stated, we are bound to review the court’s reconsideration and
    decertification order for manifest abuse of discretion. (Noel v. Thrifty Payless,
    Inc., supra, 7 Cal.5th at pp. 967-968; Simonyan v. Nationwide Insurance
    Company of America, supra, 78 Cal.App.5th at p. 895.) “ ‘ “The appropriate
    test for abuse of discretion is whether the trial court exceeded the bounds of
    reason. When two or more inferences can reasonably be deduced from the
    facts, the reviewing court has no authority to substitute its decision for that
    of the trial court.” ’ ” (Goodman v. Lozano (2010) 
    47 Cal.4th 1327
    , 1339.)
    Under this review standard, a court’s ruling will not be disturbed unless the
    court exercised its discretion in an arbitrary, capricious, or patently absurd
    manner. (In re Stephanie M. (1994) 
    7 Cal.4th 295
    , 318.)
    Applying this standard on this record, we cannot say the court erred by
    decertifying the class. In 2015, District presented evidence to Judge Taylor
    via a declaration from its chief financial officer, Richard Hannasch,
    explaining why it was impossible for District to overcharge all of the class
    members, and why residential property owners/class members would suffer
    higher assessments on the success of commercial property-owner class
    members such as plaintiffs. Specifically, Hannasch stated “it is not
    mathematically possible that all customers (i.e., all prospective class
    11    In a footnote included within their arguments concerning leave to
    amend the class definition or claims, plaintiffs say the court abused its
    discretion by “sustaining [District’s] boilerplate, copied and pasted objections
    to every single piece of evidence introduced in opposition to the motion to
    decertify” without “provid[ing] any reason or bases for this ruling in the
    decertification order.” Such cursory assertions do not constitute a meaningful
    evidentiary challenge, and we do not address them.
    28
    members) were overcharged, because all customers were paying their
    proportional share of a capped amount of revenues needed to provide sewer
    services. If any customers were overcharged, that would mean
    mathematically, inevitably, and necessarily, that other customers were
    undercharged. Each customer pays his or her share of the total costs of
    annual sewer services—if a determination is made about one customer’s
    contribution, or one group of customers’ contributions, it will necessarily
    affect the amount that the remaining customers will be required to
    contribute. Therefore, any refund of sewer service charges to certain
    customers would necessarily have to be paid out of funds collected from
    others.” Pointing out all three plaintiffs owned commercial properties,
    Hannasch explained that “if commercial property owners successfully argued
    that they were overcharged for sewer service charges, the source of funds for
    any potential refunds would be higher assessments on other property owners,
    who are predominantly residential property owners.”
    Thus, District’s opposition to certification in 2015 was premised in part
    on the theory that given its collection of a fixed amount of revenue, the
    lawsuit and any modification of the EDU schedule would give rise to
    antagonism and conflicts between the class representatives and the
    remaining class, or among class members. Judge Pollack determined, on
    reconsideration, that this evidence demonstrated Judge Taylor had
    erroneously certified a class with actual and inherent irreconcilable conflicts
    stemming from the lawsuit, pitting “the wins for some class members with
    the corresponding losses for others,” which Judge Taylor did not appreciate.
    Judge Pollack further determined that because plaintiffs had not proposed a
    subclass that could eliminate such a conflict, nor had they provided an
    alternative methodology for calculating proportionate sewer charges, there
    29
    was no way to determine which members would get a reduced allocation
    under a modified methodology so as to proceed with a subclass.
    It was not wholly unreasonable or outside the bounds of reason for
    Judge Pollack to view this evidence differently from Judge Taylor as showing
    a present and inherent, not hypothetical or speculative, conflict among class
    members sufficient to bar certification. Judge Pollack’s observations are apt:
    “[S]ince the ‘pie’ from which proportionality must be allocated always totals
    100 [percent], a ‘zero[-]sum’ game is created if any payer’s proportionate
    share is changed. If one class member payer’s proportion is reduced,
    necessarily other class member payor(s)’ proportion(s) must increase. A
    lawsuit like this, premised upon ‘robbing Peter to pay Paul’ is inherently
    improper when Peter and Paul are both plaintiffs in the same lawsuit (and
    represented by the same law firm).” District was not required to provide
    evidence of underpaying class members when the very nature of the way
    District operates establishes the class will have antagonistic interests. It was
    not an abuse of discretion to conclude this sort of conflict among the proposed
    class members went “to the very subject matter of the litigation,” namely the
    alleged overcharging of sewer system consumers. (See, e.g., Global Minerals
    & Metals Corp. (2003) 
    113 Cal.App.4th 836
    , 851-854 [plaintiffs who alleged
    defendants manipulated the price of copper, causing artificial inflation of
    prices, could not maintain class due to conflicts among plaintiff class
    members who acted as purchasers and those who acted as sellers, among
    other problems].) This is not merely a matter of class plaintiffs having to
    make individualized damages showings or eligibility for recovery. (Compare
    In re Cipro Cases I & II (2004) 
    121 Cal.App.4th 402
    , 414-415 [inflated prices
    were common to all plaintiffs, who were all harmed by the same anti-
    competitive conduct].)
    30
    District presented similar evidence in its decertification motion via the
    declarations of Handlers, Metts, and Schmollinger,12 which went unrebutted
    when the court excluded plaintiffs’ proffered expert evidence. While we agree
    with plaintiffs that these declarations were not new in addressing the zero-
    sum nature of District’s EDU system, District buttressed its decertification
    motion with new evidence: deposition excerpts from class members who
    would withdraw or want to stop the lawsuit if it were to result in increased
    sewer charges. Plaintiffs appear to concede the class member deposition
    excerpts are new, but characterize them as “self-serving” and “cherry-picked.”
    They maintain the court erred by considering the testimony, but provide no
    12     Handlers averred: “The calculation of sewer service charges is a zero-
    sum game. Even if this Court ordered the District to change its method for
    calculating rates, the District would still need to collect the same amount of
    revenues sufficient to operate and maintain the sewer system—the only thing
    that would change is the distribution of these costs among ratepayers.
    Assuming arguendo that Plaintiffs’ theory was correct and the District’s EDU
    method is unlawful (which it is not), if any customers were overcharged, that
    would mean, necessarily, that other customers were undercharged. Because
    of the way sewer service charges are calculated, customers who are allegedly
    overcharged would be, in a sense, subsidizing the sewer service costs for
    customers who are being undercharged. Customers who were undercharged
    would therefore actually benefit from the District’s allegedly improper
    distribution formula. If the District’s EDU schedule is modified for any
    occupancy type in a sewer service area, it will affect the calculated amount of
    sewer service charges that the remaining parcels in that sewer service will
    have to pay, because the amount of revenues needed remains the same,
    regardless of how those revenues are apportioned for collection.” Metts made
    similar statements, explaining, “A decrease in one establishment type’s sewer
    service charges (i.e., restaurants) could very well result in an increase for
    another’s (i.e., residential).” Schmollinger, District’s acting general manager
    and chief financial officer, discussed District’s annual budget process used to
    determine total costs to maintain and operate the sewer system for the
    upcoming fiscal year, and the zero-sum game nature of the calculation of
    those services in a manner similar to Handlers.
    31
    reasoned legal argument with authority to support that position. On
    District’s motion for decertification, it was not arbitrary or wholly
    unreasonable for the court to view this evidence as manifesting the
    antagonism to the class by class members situated similarly to the
    deponents.
    Further, Judge Pollack relied on federal authority decided after Judge
    Taylor’s class certification order—Junod v. NWP Services Company (C.D. Cal.
    2016) 
    2016 WL 6306030
    —involving a similar context: claims of a billing
    servicer overcharging for water and sewer services. (Id. at *1.) In the
    absence of relevant state precedents on class action procedure, it is “well
    established” that California courts may take guidance from federal law.
    (Green v. Obledo (1981) 
    29 Cal.3d 126
    , 145-146; see also Noel v. Thrifty
    Payless, Inc., supra, 7 Cal.5th at p. 977; Duran v. Obesity Research Institute,
    LLC (2016) 
    1 Cal.App.5th 635
    , 646, fn. 6.)
    The plaintiff in Junod sought to define a class of “[a]ll persons to whom
    [the billing servicer] sends invoices for utility services in the U.S. who have a
    water submeter in their unit that only measures hot water usage.” (Junod v.
    NWP Services Company, supra, 
    2016 WL 6306030
     at *2, 5.) The district
    court denied certification. The underlying legal theory supporting the claim
    was not pleaded in the complaint, but also the class was unidentifiable and
    unascertainable: it necessarily included unharmed members, that is, cold
    water users who ultimately paid less than their share of total water usage,
    whose utility costs the hot water users subsidized. (Id. at *5-6.) Junod
    explained that courts consistently denied certification when class definitions
    include both harmed and unharmed members. (Id. at *6, citing in part
    Mazur v. eBay Inc. (N.D. Cal. 2009) 
    257 F.R.D. 563
    , 567 [class included
    certain eBay auction purchasers who due to the type of bidding were not
    32
    harmed by an inflated price] & Colapinto v. Esquire Deposition Servs., LLC
    (C.D. Cal. 2011) 
    2011 WL 913251
    , at *4 [class was not ascertainable because
    definition included members who were reimbursed for allegedly unlawful and
    deceptive court reporter charges].) Because the class in Junod fell within
    that category and was “imprecise and overbroad,” the court denied
    certification. (Junod, at *6.)
    Such a defect in the class “alone is sufficient to warrant denial of
    plaintiff’s motion for class certification.” (Colapinto v. Esquire Deposition
    Servs., LLC, supra, 
    2011 WL 913251
     at *4, some capitalization omitted.)
    This court acknowledges that “ ‘ “[c]lass certification is properly denied for
    lack of ascertainability when the proposed definition is overbroad and the
    plaintiff offers no means by which only those class member who have claims
    can be identified from those who should not be included in the class.” ’ ”
    (Hefczyc v. Rady Children’s Hospital-San Diego (2017) 
    17 Cal.App.5th 518
    ,
    537, disapproved on other grounds in Noel v. Thrifty Payless, Inc., supra, 7
    Cal.5th at p. 986, fn. 15 [disapproving Hefczyc to the extent it applied an
    ascertainability standard requiring class members be “ ‘readily identified
    without unreasonable expense or time by reference to official records’ ”].) We
    cannot say the court abused its discretion in decertifying the class by
    applying Junod v. NWP Services Company, supra, 
    2016 WL 6306030
     and like
    authorities.
    Plaintiffs’ cited cases involve differing facts that limit their persuasive
    value. (Accord, Seastrom v. Neways, Inc. (2007) 
    149 Cal.App.4th 1496
    , 1504
    [“ ‘General expressions in opinions that go beyond the facts of the case will
    not necessarily control the outcome in a subsequent suit involving different
    facts’ ”].) They do not compel a different conclusion in any event. Plaintiffs
    compare the situation here with Social Services Union, Local 535 etc. v.
    33
    County of Santa Clara (9th Cir. 1979) 
    609 F.2d 944
    , in which the Ninth
    Circuit reversed a district court’s denial of certification of a class of female
    union members paid less than their male counterparts based on the lower
    court’s perception of a conflict between male and female class members’
    economic interests. (Id. at pp. 946, 948.) The Ninth Circuit explained the
    conflict was speculative: “While the court assumed that male union members
    would suffer pecuniary injury if the pay of female employees were raised
    relying on ‘the general budgetary constraints on units of local government’
    this assumption is purely speculative. The record contains no evidence that
    the economic interests of male union members would in fact suffer in this or
    any other way because of relief that might be obtained in this action. Mere
    speculation as to conflicts that may develop at the remedy stage is
    insufficient to support denial of initial class certification.” (Id. at p. 948.)
    Here, Judge Pollack was presented with nonspeculative evidence from
    District representatives as to the zero-sum nature of the District’s EDU
    system, which he found necessarily created actual conflict among the class
    members; such unique circumstances were not present in Social Services
    Union.
    Nor does Capitol People First, supra, 
    155 Cal.App.4th 676
     assist
    plaintiffs. Plaintiffs rely on that case for the proposition that “the interests of
    minority class members cannot defeat the right of the majority of ratepayers
    to enforce Proposition 218.” But Capitol People First is likewise inapposite.
    It involved the adequate representation of a class of persons with
    developmental disabilities who sought declaratory and injunctive relief
    related to their right to live in the least restrictive environment
    commensurate with their needs. (Id. at p. 681.) The class plaintiffs asserted
    the defendants’ policies and practices did not comply with the law, but a
    34
    group of interveners—11 individuals and two nonprofit organizations—
    disagreed, taking the position that many members of the class would be best
    served in large institutions versus community settings. (Id. at pp. 698, 699.)
    The Court of Appeal reversed the lower court’s decertification order, finding
    the intervenors’ “concern goes to the merits of appellants’ claim, not to the
    issue of certification”; that is, their “disagreement does not comprise
    antagonism that will defeat certification.” (Ibid.) The appellate court went
    on to say: “Interveners have no legitimate interest in furthering any
    continuing violations of the law, or in preventing other class members from
    seeking systemic relief to correct any violations found by the court. Whether
    these laws have been violated is for the court to decide, with the help of
    interveners. As the court acknowledged, interveners can protect their
    interests by presenting evidence and making arguments to the trier of fact.”
    (Ibid.) The court also observed that the plaintiffs and interveners had
    different philosophical perspectives, but those did not amount to legally
    cognizable antagonism where the interveners had materially misstated the
    plaintiffs’ requested relief and position, leading the lower court to make
    erroneous assumptions about the “heart of this litigation.” (Id. at pp. 699-
    700.) According to the court, “[d]ifferences among class members about the
    type of relief sought and the outcome of the litigation can be accommodated
    by the trial judge whose job is to give the various class interests the proper
    weight under the applicable substantive law.” (Id. at p. 701.) The Capitol
    People First court emphasized that the subject matter of the case and the
    reforms plaintiffs sought were not about the actual outcomes of the
    placement determinations (ibid.), which was the intervenors’ focus.
    Capitol People First, supra, 
    155 Cal.App.4th 676
     likewise does not
    involve circumstances where creating a broad class (here, of District
    35
    customers who paid a sewer service charge on or after November 22, 2012)
    pits some injured class members against others necessarily benefitted as to
    the very subject matter of the litigation. It does not involve a scenario of both
    harmed and unharmed class members, creating an unascertainable and
    improper class. The case does not compel us to conclude Judge Pollack
    abused his discretion in decertifying the class.
    IV. Amicus Arguments
    Given our conclusion, we need not reach the arguments made by
    amicus California Association of Sanitation Agencies. Applying the
    framework set out in Katzberg v. Regents of University of California (2002) 
    29 Cal.4th 300
    , it contends a refund is not an appropriate remedy for a
    constitutional Proposition 218 violation. But the issue was not raised by
    District in this court or below, and we will not consider it anew. “ ‘Courts
    generally do not consider new issues raised in amicus briefs. Instead, “[i]t is
    a general rule that an amicus curiae accepts a case as he or she finds it,” and
    “[a]micus curiae may not ‘launch out upon a juridical expedition of its own
    unrelated to the actual appellate record.’ ” [Citation.] “California courts
    refuse to consider arguments raised by amicus curiae when those arguments
    are not presented in the trial court, and are not urged by the parties on
    appeal. ‘ “Amicus curiae must accept the issues made and propositions urged
    by the appealing parties, and any additional questions presented in a brief
    filed by an amicus curie will not be considered.” ’ ” ’ ” (People v. Davis (2022)
    
    75 Cal.App.5th 694
    , 725.) Further, courts should avoid resolving
    constitutional questions if the matter may be resolved on narrower grounds.
    (Hassell v. Bird (2018) 
    5 Cal.5th 522
    , 534; Loeffler v. Target Corp. (2014) 
    58 Cal.4th 1081
    , 1102.)
    36
    DISPOSITION
    The order is affirmed.
    O’ROURKE, J.
    WE CONCUR:
    McCONNELL, P. J.
    BUCHANAN, J.
    37