OPINION

CROSKEY, J. —

Petitioner Pier'Angela Spaccia challenges by petition for writ of mandate the trial court's order denying her motion to recuse the Los Angeles County District Attorney's Office from representing the People of the State of California in a criminal prosecution arising from her alleged misconduct as assistant chief administrative officer of the City of Bell (City).1 The charges against Spaccia relate, in part, to her involvement in the transaction by which Randy Adams was purportedly hired by the City to act as the City's chief of police, for a very substantial salary, the amount of which was hidden from the City Council. Spaccia argues that the Los Angeles County District Attorney's Office must be recused from her prosecution due to the alleged relationship between Adams and District Attorney Steve Cooley, and District Attorney Cooley's purported advice to Adams regarding his contract with the City. We conclude that the trial court did not abuse its discretion in denying recusal, as Spaccia failed to establish a conflict of interest mandating recusal of the entire district attorney's office. We further conclude that the trial court did not abuse its discretion in denying Spaccia an evidentiary hearing on her recusal motion, as Spaccia failed to submit prima facie evidence of a disabling conflict. We therefore will deny the writ petition.

FACTUAL AND PROCEDURAL BACKGROUND2

1. The Indictment

Robert Rizzo was the City Manager (also referred to as the Chief Administrative Officer) of the City; Spaccia was the assistant city manager. Rizzo and Spaccia have been charged in two separate cases alleging misappropriation of public funds and conflicts of interest. We are concerned with the second such case, in which Rizzo and Spaccia were charged, on March 29, 2011, by grand jury indictment with seven offenses.3 Several of the counts relate to the City's contract with Adams.4 The indictment specifically alleges that Spaccia drafted the employment contract for Adams, and sent Adams an e-mail indicating, "`We have crafted our Agreements carefully so we do not draw attention to our pay.'" The indictment further alleges that Spaccia and Rizzo secreted Adams's employment contract, and that they also secreted an agreement indicating that Adams qualified for, and would be filing for, a medical disability pension upon his retirement from the City. The indictment alleges that Rizzo and Spaccia misappropriated public funds in the amount of the salary the City paid Adams pursuant to his contract, on the basis that the contract was unlawfully executed in violation of the City Charter.5 It further alleges that Rizzo and Spaccia falsified Adams's purported contracts.6 We note that the indictment does not allege that any of the terms of Adams's contracts were per se illegal;7 the indictment instead alleges that the contracts were illegally executed (on behalf of the City), falsified, and secreted.

2. Spaccia's Motion to Recuse the District Attorney's Office

On January 3, 2012, Spaccia8 moved to recuse the Los Angeles County District Attorney's Office,9 arguing that the purported involvement of persons within the district attorney's office in the transaction which resulted in Adams being hired by the City created an impermissible conflict of interest. Spaccia further argued that this involvement would result, and had in fact resulted, in her receiving unfair treatment at the hands of the district attorney's office.

In order to demonstrate the existence of a conflict, Spaccia relied on two pieces of evidence: (1) a declaration from Spaccia herself and (2) an excerpt from a complaint Adams had filed in a civil action against the City. Spaccia's declaration explained that she had been "an intermediary" in the negotiations between Rizzo and Adams which resulted in Adams being hired as the City's Chief of Police. She stated, "During these negotiations, Randy Adams told me that he had spoken with Steve Cooley, the District Attorney of Los Angeles, and discussed his plan of becoming the Chief of Police of the City of Bell. Randy Adams told me that he wanted to check out the City of Bell to make sure there were no issues and that he discussed with Cooley the salary he would receive. Cooley responded that he knew of no problems at Bell and that if they wanted to pay you that much money you should take it."10 To confirm the truth of her declaration, Spaccia relied on an excerpt from a complaint Adams purportedly filed against the City.11 In that complaint, Adams alleged that, during the course of his negotiations with Rizzo and Spaccia, he "contacted the Los Angeles County District Attorney['s] office to inquire as to the propriety of the City's offer. Personnel from the Los Angeles County District Attorney['s] office encouraged Adams to accept the City's offer of employment." Based on her declaration and this excerpt, Spaccia argued that the Los Angeles County District Attorney's Office "was involved in the very transaction which forms the basis" of several counts of the indictment against her. Thus, she argued, a conflict of interest has been established.12

Spaccia also argued that she could not receive fair treatment in this case due to the conflict and that, in fact, she has already been treated unfairly. Specifically, Spaccia argued that Adams is a critical witness who could provide testimony that would exonerate her. Spaccia took the position that the district attorney's office has "skew[ed] the entire investigation away from" Adams and failed "even to interview Randy Adams,"13 which has allegedly "made her defense more difficult." Spaccia's motion argued, "If ... Adams had been called to the Grand Jury and testified, [Spaccia] may not have been indicted. Had ... Adams been interviewed, that exculpatory interview would have to have been made available to the Grand Jury. If ... Adams had been indicted, it is likely he would testify at trial and exonerate ... Spaccia."14

Spaccia's motion was not supported by any declaration from Adams himself as to the identity of the person to whom he spoke at the district attorney's office during contract negotiations. Spaccia instead sought an evidentiary hearing in support of her motion, and subpoenaed Adams to appear at the hearing. It was believed that Adams might invoke his Fifth Amendment privilege not to testify,15 and Spaccia suggested that, if he did, the prosecution should grant him limited immunity for the recusal hearing.

3. The Hearing and Ruling on the Motion

After the Attorney General filed an opposition to the motion,16 a hearing was held. At the hearing, the argument quickly became focused on the issue of whether Spaccia had introduced sufficient evidence to justify an evidentiary hearing. Specifically, Spaccia argued that her declaration and the excerpts from Adams's complaint constituted prima facie evidence that participation of the district attorney's office in the underlying transaction required recusal. Therefore, she urged, further inquiry of Adams was justified. Specifically, Spaccia asserted that it was necessary to inquire of Adams as to the identity of the individual with whom he had spoken in the district attorney's office. Spaccia conceded that Adams's complaint indicated that he had spoken only with "personnel" at the district attorney's office, but noted that her own declaration indicated that Adams told her that he had spoken with District Attorney Cooley himself.17 Spaccia took the position that the only way of finding out the identity of the individual to whom Adams had spoken was to elicit the testimony from Adams.18 Spaccia conceded that, even if Adams had spoken with District Attorney Cooley, the conversation might have been a "casual" conversation "of no import." Thus, Spaccia sought to question Adams not only on the identity of the person with whom he spoke, but as to the content of the conversation as well.19

The trial court concluded that even if Adams had spoken to District Attorney Cooley himself, and District Attorney Cooley had encouraged Adams to take the chief of police position, this would not establish a conflict that would justify recusal of the entire district attorney's office. As such, the trial court denied an evidentiary hearing, and denied the recusal motion "at this time."

4. The Petition for Writ of Mandate

Spaccia then filed a timely petition for writ of mandate. The petition for writ of mandate was accompanied by a substantial number of exhibits, few of which were before the trial court at the time of the hearing on the motion.20 Many of the exhibits consist of newspaper or Internet "blog" posts which contain multiple levels of hearsay. The petition also relied on a video of a televised press conference, purportedly available on the Internet.21 While nearly all of these articles (and the video) were in existence at the time of Spaccia's recusal motion,22 none of them were submitted to the trial court in connection with the motion. Spaccia nonetheless relied on this evidence in her writ petition to this court to support her argument that the entire district attorney's office must be recused or, in the alternative, that an evidentiary hearing must be held at which all of her new evidence could be considered.23 Additionally, Spaccia argued that the trial court did not apply the proper legal test when considering a motion to recuse an entire district attorney's office.

We issued an order to show cause. In the course of the briefing, we informed Spaccia's counsel that we would not consider any exhibits which were not before the trial court in the absence of a properly supported request for judicial notice. Two requests were filed; both were denied as not properly supported.

CONTENTIONS OF THE PARTIES

Spaccia first contends that the trial court misapplied the law governing recusal of an entire district attorney's office, arguing that the case of City and County of San Francisco v. Cobra Solutions, Inc. (2006) 38 Cal.4th 839 [43 Cal.Rptr.3d 771, 135 P.3d 20] (Cobra Solutions) sets forth the proper standard. Second, Spaccia contends that the new evidence on which she relies establishes a conflict mandating recusal of the district attorney's office under the Cobra Solutions case. Third, Spaccia contends that she has submitted sufficient evidence to this court, and the trial court, which would mandate an evidentiary hearing on her recusal motion. In response, the district attorney and the Attorney General first argue that Cobra Solutions applies in civil cases, not criminal prosecutions. Second, they argue that there is no basis for this court to consider the new evidence which was not before the trial court. Third, they argue that the trial court was well within its discretion to deny an evidentiary hearing on Spaccia's recusal motion. We agree with the district attorney and Attorney General in all respects, and will therefore deny the writ petition.

DISCUSSION

1. Cobra Solutions Is Inapplicable to a Criminal Case

We first address Spaccia's argument that Cobra Solutions sets forth the appropriate standard to be used in considering a motion to recuse an entire district attorney's office in a criminal case. In order to properly address the argument, a brief review of the law of recusal is necessary.

In People v. Superior Court (Greer) (1977) 19 Cal.3d 255 [137 Cal.Rptr. 476, 561 P.2d 1164], the California Supreme Court considered whether, and in what circumstances, a trial court possesses the authority to recuse a district attorney's office from a case and to direct the Attorney General to take over the prosecution. The Supreme Court concluded that such authority exists as part of the trial court's inherent power to control the conduct of its ministerial officers and all other persons connected with a judicial proceeding before it. (Id. at p. 261 & fn. 4.) As to the circumstances in which a court may order recusal, the Supreme Court held, "a trial judge may exercise his power to disqualify a district attorney from participating in the prosecution of a criminal charge when the judge determines that the attorney suffers from a conflict of interest which might prejudice him against the accused and thereby affect, or appear to affect, his ability to impartially perform the discretionary functions of his office." (Id. at p. 269.)

The "appear to affect" language from Greer was expounded in Younger v. Superior Court (1978) 77 Cal.App.3d 892 [144 Cal.Rptr. 34] (Younger), a case which involved the situation of a former defense attorney who had become the Assistant District Attorney of Los Angeles County. While it was clear that the assistant district attorney could have no part in the prosecution of his former clients (or clients of his former firm), the issue raised was whether the entire district attorney's office must also be recused from those cases due to his position of authority in the office. The Court of Appeal upheld the trial court's recusal order on the basis that, even though the assistant district attorney was walled off from the prosecution of the cases of his former clients and those of his former firm, his presence in a position of high authority could possibly affect their prosecution. Moreover, there would be an appearance of impropriety in the public's eye. (Id. at pp. 896-897.) Citing Greer, the court stated, "Not only must evil itself be avoided but any significant appearance thereof must likewise be avoided. The presence of a former leading criminal defense attorney, near the top of a public prosecutor's office, suggests to those of a paranoid and conspiratorial turn of mind the presence of a fox in the hen house. We do not think that such abnormal suspicion has any reasonable basis in fact whatsoever, but since a public prosecutor must `perform his functions with the highest degree of integrity and impartiality, and with the appearance thereof' [citation], for appearance's sake, the basis for this suspicion must be eliminated." (Younger, supra, 77 Cal.App.3d at p. 897.)

(1) Two years later, the Legislature adopted Penal Code section 1424, which set forth a new standard for recusing a district attorney. The statute "was enacted in 1980 `in response to the substantial increase in the number of unnecessary prosecutorial recusals under the "appearance of conflict" standard set forth in [Greer].' [Citation.]" (People v. Petrisca (2006) 138 Cal.App.4th 189, 194 [41 Cal.Rptr.3d 182].) Penal Code section 1424 provides, in pertinent part, that a motion to disqualify a district attorney24 "may not be granted unless the evidence shows that a conflict of interest exists that would render it unlikely that the defendant would receive a fair trial." (Pen. Code, § 1424, subd. (a)(1).)

The language of Penal Code section 1424 prohibiting recusal unless a conflict exists that would "render it unlikely that the defendant would receive a fair trial," was intended to abrogate Greer's standard allowing recusal for an appearance of impartiality. (People v. Vasquez (2006) 39 Cal.4th 47, 59 [45 Cal.Rptr.3d 372, 137 P.3d 199].) Under the statute, a district attorney cannot be recused unless there is a conflict that creates "an actual likelihood of leading to unfair treatment." (Ibid.)

Our Supreme Court and Courts of Appeal recognized this change in the law and have routinely acknowledged that, after the enactment of Penal Code section 1424, neither a district attorney nor an entire district attorney's office could be recused for a mere appearance of impartiality, but could only be recused when there existed an actual likelihood of unfair treatment. (Stark v. Superior Court (2011) 52 Cal.4th 368, 416 [128 Cal.Rptr.3d 611, 257 P.3d 41]; Hollywood v. Superior Court (2008) 43 Cal.4th 721, 735 [76 Cal.Rptr.3d 264, 182 P.3d 590]; Haraguchi v. Superior Court (2008) 43 Cal.4th 706, 719 [76 Cal.Rptr.3d 250, 182 P.3d 579]; Hambarian v. Superior Court (2002) 27 Cal.4th 826, 834 [118 Cal.Rptr.2d 725, 44 P.3d 102]; People v. Eubanks (1996) 14 Cal.4th 580, 592 [59 Cal.Rptr.2d 200, 927 P.2d 310]; People v. Jenan (2006) 140 Cal.App.4th 782, 791 [44 Cal.Rptr.3d 771]; People v. Petrisca, supra, 138 Cal.App.4th at p. 194; People v. Neely (1999) 70 Cal.App.4th 767, 776 [82 Cal.Rptr.2d 886]; People v. Merritt (1993) 19 Cal.App.4th 1573, 1581 [24 Cal.Rptr.2d 177]; People v. Lepe (1985) 164 Cal.App.3d 685, 687 [211 Cal.Rptr. 432].) As our Supreme Court recently reaffirmed, "the Legislature superseded the Greer standard by enacting [Penal Code] section 1424...." (Stark v. Superior Court, supra, 52 Cal.4th at pp. 416-417.)

During the course of this unbroken line of authority, the California Supreme Court considered the issue of the recusal of a city attorney in a civil case.25 In Cobra Solutions, an attorney who had formerly represented a client in government contract negotiations with a city was ultimately elected city attorney. When the city then brought a civil action against the city attorney's former client, for fraud and breach of contract, the former client sought to recuse the entire city attorney's office. The Supreme Court noted that, as the case before it was a civil matter, the restrictions imposed by Penal Code section 1424 did not apply. (Cobra Solutions, supra, 38 Cal.4th at p. 850.) Instead, the Supreme Court recognized that the source of a trial court's power to recuse a city attorney in a civil case is the trial court's inherent power to control the conduct of its ministerial officers and all others connected with a judicial proceeding before it.26 (38 Cal.4th at p. 846.)

At issue in Cobra Solutions was whether the judicially created rule of vicarious disqualification of an entire law firm in a civil matter should apply to a government law office when the head of that office has a conflict due to a former representation of a client the office is presently pursuing. (Cobra Solutions, supra, 38 Cal.4th at p. 848.) In considering whether to apply the rule of vicarious disqualification to a government law office in a civil matter, the Supreme Court considered the policy issues which, in Greer and Younger, had supported a rule allowing disqualification of a prosecutor for an appearance of impropriety only. The Supreme Court concluded that those policy concerns remained valid, and would justify vicarious disqualification of the entire city attorney's office in the case before it. (Cobra Solutions, supra, 38 Cal.4th at pp. 850-851, 854.) However, the Supreme Court was careful to acknowledge that the standard of Greer and Younger no longer applied in criminal cases, due to the enactment of Penal Code section 1424. The court stated, "The disqualification standard that the Court of Appeal applied in Younger no longer controls criminal prosecutions because the Legislature in 1980 enacted Penal Code section 1424 [citation], which provides for the recusal of local prosecuting agencies only when `the evidence shows that a conflict of interest exists that would render it unlikely that the defendant would receive a fair trial.' [Citation.] Section 1424 is inapplicable to this case, which is a civil action. Although the statute, which triggers disqualification of a prosecutor from a criminal proceeding `only if' the conflict is `"so grave as to render it unlikely that [the] defendant will receive fair treatment"' [citation], has superseded Younger's holding [citation], the concerns that the Court of Appeal in Younger expressed about conflicted heads of public law offices, whose policymaking and supervisory duties are such as to preclude them from being effectively screened, have not lost their relevance." (Cobra Solutions, supra, 38 Cal.4th at p. 850.)

Spaccia would interpret the Supreme Court's language that the policy concerns in Younger "have not lost their relevance," (Cobra Solutions, supra, 38 Cal.4th at p. 850) as reviving the Younger standard in criminal cases seeking disqualification of an entire prosecutor's office due to a conflict of the head of the office. But as the Supreme Court itself recognized in that very same paragraph of Cobra Solutions, Penal Code section 1424 abrogated the Younger standard in criminal cases. (Cobra Solutions, supra, 38 Cal.4th at p. 850.) Indeed, shortly after Cobra Solutions, the Supreme Court stated, "An appearance of impropriety arising from participation of a conflicted prosecutor... is less of a consideration under [Penal Code] section 1424 than under the high court's supervisory authority. As we have previously noted, [Penal Code] section 1424 was enacted in part to tighten the standards for recusal so that a mere appearance of impropriety would not itself suffice; the statutory standard focuses instead on the actual likelihood of unfair treatment." (People v. Vasquez, supra, 39 Cal.4th at p. 69.) Thereafter, the Supreme Court has continued applying the Penal Code section 1424 standard, and not the Younger standard, in criminal matters where the disqualification of the prosecutor has been sought. "Only an actual likelihood of unfair treatment, not a subjective perception of impropriety, can warrant a court's taking the significant step of recusing an individual prosecutor or prosecutor's office." (Haraguchi v. Superior Court, supra, 43 Cal.4th at p. 719, original italics.) There is simply no basis, in Penal Code section 1424 or case law, to infer that the Younger standard has any application in a criminal matter.27

2. Recusal Is Not Mandated in the Instant Case

(2) Before considering Spaccia's argument that the new evidence submitted in support of her writ petition mandates recusal, we first consider whether the trial court erred in ruling on Spaccia's motion on the evidence before it. Penal Code section 1424 has been interpreted as providing a two-part test for disqualification. First, the court must determine whether there is a conflict of interest. Second, the court must determine whether the conflict is so severe as to disqualify the district attorney from acting. (People v. Eubanks, supra, 14 Cal.4th at p. 594.)

The first part of the test is satisfied by either an apparent or an actual conflict. A conflict exists, for the purposes of Penal Code section 1424, "`whenever the circumstances of a case evidence a reasonable possibility that the [district attorney]'s office may not exercise its discretionary function in an evenhanded manner.'" (People v. Eubanks, supra, 14 Cal.4th at p. 592.)

As discussed above, however, the second part of the test requires that the conflict be so grave as to render it unlikely that the defendant will receive fair treatment. (People v. Eubanks, supra, 14 Cal.4th at p. 594.) Disqualification under Penal Code section 1424 is not permissible "merely because the district attorney's further participation in the prosecution would be unseemly, would appear improper, or would tend to reduce public confidence in the impartiality and integrity of the criminal justice system. [Citations.]" (14 Cal.4th at p. 592.) Thus, whether the prosecutor's conflict is actual or apparent, it is only disqualifying when the potential for prejudice to the defendant is itself real. Indeed, the potential for prejudice must rise to the level of a likelihood of unfairness. (Ibid.)

(3) Moreover, "[r]ecusal of an entire district attorney's office is an extreme step. The threshold necessary for recusing an entire office is higher than that for an individual prosecutor." (People v. Cannedy (2009) 176 Cal.App.4th 1474, 1481 [98 Cal.Rptr.3d 596].) An entire prosecutor's office should not be recused unless it is necessary to assure a fair trial. The showing of a conflict necessary to justify so drastic a remedy must be especially persuasive. (Id. at p. 1482.)

We "review the superior court's factual findings for substantial evidence and, based on those findings, determine whether the trial court abused its discretion in denying the recusal motion." (Hambarian v. Superior Court, supra, 27 Cal.4th at p. 834.) "We review rulings on motions to recuse only for abuse of discretion precisely because trial courts are in a better position than appellate courts to assess witness credibility, make findings of fact, and evaluate the consequences of a potential conflict in light of the entirety of a case, a case they inevitably will be more familiar with than the appellate courts that may subsequently encounter the case in the context of a few briefs, a few minutes of oral argument, and a cold and often limited record. [Citations.]" (Haraguchi v. Superior Court, supra, 43 Cal.4th at p. 713.)

(4) With the standard of review thus established, we consider whether the trial court abused its discretion in denying Spaccia's motion to recuse. Even assuming that Spaccia had established an actual or apparent conflict, based on Adams's purported discussions with District Attorney Cooley prior to signing the contract, the trial court concluded that Spaccia had failed to establish that the conflict created a likelihood of unfairness in her trial. The trial court's conclusion is supported by the evidence, as Spaccia's arguments for a likelihood of unfairness were nothing more than speculation. First, Spaccia speculated that Adams's testimony, or his statements to the district attorney if interviewed, would exonerate her. Second, Spaccia speculated that Adams would exercise his Fifth Amendment privilege not to testify at trial if she subpoenaed him to testify in her defense, but would choose instead to take the stand (and give such exonerating testimony) if charged as a codefendant. Third, Spaccia speculated that the district attorney would not offer Adams immunity, which would prevent him from exonerating her if he is not charged. Yet, Spaccia offered no evidence to support any of these theories.28 "[A] motion to disqualify a prosecutor must be based upon a likelihood of unfairness and not upon mere speculation." (People v. Parmar (2001) 86 Cal.App.4th 781, 800 [104 Cal.Rptr.2d 31].) Thus, the trial court did not abuse its discretion in denying the motion to recuse.

Spaccia argues, however, that District Attorney Cooley must be recused due to additional evidence she has presented for the first time in connection with her writ petition.29 We reject this argument for two reasons. First, we do not consider evidence which was not before the trial court when it ruled on the motion. (People v. Superior Court (Lavi) (1993) 4 Cal.4th 1164, 1173, fn. 5 [17 Cal.Rptr.2d 815, 847 P.2d 1031].) Second, the vast bulk of Spaccia's evidence is offered to support her argument that there would be an appearance of impropriety if the district attorney's office continues to prosecute this case; as discussed above, an appearance of impropriety is an insufficient basis on which to recuse a prosecutor's office in a criminal case.

3. The Trial Court Did Not Err in Denying an Evidentiary Hearing

Penal Code section 1424 provides that, after briefing on a recusal motion, the trial court "shall review the affidavits and determine whether or not an evidentiary hearing is necessary." Spaccia contends the trial court erred in denying her an evidentiary hearing in which she sought to obtain Adams's testimony regarding the identity of the person in the district attorney's office with whom he spoke and the substance of the conversation.

We sought additional briefing from the parties on the issues of (1) the standard of review of a trial court's denial of an evidentiary hearing under Penal Code section 1424 and (2) the showing which must be established in order to obtain such a hearing. Other than the legislative history of the relevant language in Penal Code section 1424,30 the parties have submitted no authority directly on point, although they seek to draw analogies to cases permitting evidentiary hearings in other contexts. Our independent research has similarly disclosed no controlling authority.

(5) The first issue, the standard of review, is resolved by the language of the statute itself. Penal Code section 1424 provides that the trial court "shall ... determine whether ... an evidentiary hearing is necessary." (Id., subd. (a)(1).) As the statute does not provide that an evidentiary hearing must be granted in any particular set of circumstances, we conclude that the statute contemplates an exercise of discretion on the part of the trial court in determining whether a hearing is necessary. We thus review the trial court's decision for an abuse of discretion. The parties concur that abuse of discretion is the appropriate standard of review.

The second issue, on what basis the court should exercise its discretion in determining the necessity of a hearing, is one of first impression. In 1999, Penal Code section 1424 was amended to provide for an evidentiary hearing. Prior to that time, Penal Code section 1424 did not specifically provide for an evidentiary hearing; it spoke only of "the hearing on the motion." In 1999, however, the Legislature enacted Statutes 1999, chapter 363, section 1, page 2606, which amended Penal Code section 1424 to provide, in pertinent part, that (1) a motion to disqualify the district attorney shall be accompanied by competent witness affidavits; (2) the district attorney and Attorney General may file affidavits in opposition; and (3) "[t]he judge shall review the affidavits and determine whether or not an evidentiary hearing is necessary." We must determine the Legislature's intent with respect to the circumstances in which a trial court should determine that an evidentiary hearing is necessary.

There is some guidance to be found in the legislative history. On January 15, 1999, Assembly Bill No. 154 (1999-2000 Reg. Sess.) was originally introduced to amend Penal Code section 1424. As originally introduced, the bill would (1) require the disqualification motion to be accompanied by affidavits; (2) permit the district attorney and the Attorney General to file affidavits in opposition; and (3) provide that "[a]n evidentiary hearing shall not be held unless there are disputed issues of material fact that cannot be resolved through the use of affidavits." (Assem. Bill No. 154 (1999-2000 Reg. Sess.) as introduced Jan. 15, 1999, p. 2, italics omitted.) While the first two provisions were ultimately enacted, the third was not.

(6) "[W]hen the Legislature amends a bill to add a provision, and then deletes that provision in a subsequent version of the bill, this failure to enact the provision is of little assistance in determining the intent of the Legislature." (American Financial Services Assn. v. City of Oakland (2005) 34 Cal.4th 1239, 1261-1262 [23 Cal.Rptr.3d 453, 104 P.3d 813].) The reason for this rule of statutory interpretation is obvious. When it is known only that the provision was not enacted, there is no basis for inferring, for example, that the provision was not enacted because it was believed to be superfluous, or, alternatively, that it was not enacted because the Legislature believed it to be bad policy. In this case, however, the language providing that an evidentiary hearing should not be held unless there exist disputed issues of material fact that cannot be resolved on affidavits alone was not merely deleted; instead, it was replaced.

Moreover, further guidance is presented by a committee report, which explains the reason for the replacement. "The author will propose the following amendment in Committee: [¶] Delete the following language from page 2 lines 16-18 `An evidentiary hearing shall not be held unless there are disputed issues of material fact that cannot be resolved through the use of affidavits' and replace it with the following: [¶] [`]The judge shall review the affidavits and determine whether or not an evidentiary hearing is necessary.['] [¶] The proponents want the judge to decide the recusal issue solely on the affidavits if that is possible. They believe this would reduce the potential of `fishing expeditions' by defense attorneys and save on court time. [¶] [California Attorneys for Criminal Justice] believes that `evidentiary hearings are the most reliable way for a court to determine whether there is, in fact, a conflict of interest that would require the disqualification of a District Attorney's office.' [¶] [California Attorneys for Criminal Justice] also notes that recusal motions are rare and `there is no evidence that the current system for handling alleged District Attorney conflicts of interest is not working.'" (Sen. Com. on Public Safety, Analysis of Assem. Bill No. 154 (1999-2000 Reg. Sess.) as amended May 18, 1999, pp. 5-7.) In other words, the initial proponents of the bill sought to have the disqualification issue resolved on affidavits whenever possible, so they argued in favor of the initial language limiting the availability of evidentiary hearings. However, opponents of that language argued that evidentiary hearings were valuable on the issue of disqualification and should be more freely available. As the language limiting hearings was ultimately rejected in favor of language leaving the issue of whether to hold a hearing to the trial court's discretion, we can infer that the Legislature expressly chose not to limit evidentiary hearings to only those situations in which there exist disputed issues of material fact which could not be resolved on affidavits alone.31

(7) It is clear, then, that trial courts have discretion to determine, after reviewing the affidavits, whether an evidentiary hearing on a Penal Code section 1424 motion "is necessary." It is further clear that a hearing may be deemed "necessary" by the trial court even if the movant has not established the existence of disputed issues of material fact that cannot be resolved through the use of affidavits alone. But we must determine on what showing the trial court's denial of a hearing constitutes an abuse of the broad discretion it has been granted by the Legislature.

(8) We conclude that, at a minimum, in order to establish an abuse of discretion in the denial of a hearing, the moving party must show that it submitted sufficient affidavits to establish a prima facie case for disqualification. One situation in which a trial court is called upon to determine whether to grant an evidentiary hearing on an issue is a petition for a modification of a dependency order, under Welfare and Institutions Code section 388. Welfare and Institutions Code section 388 permits a parent or other interested party to seek to modify an existing dependency order. If it appears to the court that the best interests of the child may be promoted by the proposed change of order, the court shall order that a hearing be held on the issue. (Welf. & Inst. Code, § 388, subd. (d).) The courts have concluded that a "parent need only make a prima facie showing to trigger the right to proceed by way of a full hearing." (In re Marilyn H. (1993) 5 Cal.4th 295, 310 [19 Cal.Rptr.2d 544, 851 P.2d 826].) "A `prima facie' showing refers to those facts which will sustain a favorable decision if the evidence submitted in support of the allegations by the petitioner is credited." (In re Edward H. (1996) 43 Cal.App.4th 584, 593 [50 Cal.Rptr.2d 745].) Similarly, an inmate seeking habeas corpus relief must state a prima facie case in order to obtain an order to show cause. (In re Martinez (2009) 46 Cal.4th 945, 955 [95 Cal.Rptr.3d 570, 209 P.3d 908]; In re David (2012) 202 Cal.App.4th 675, 681 [135 Cal.Rptr.3d 855].) In our view, a similar test should apply when a party seeks a hearing on a recusal motion under Penal Code section 1424: the party seeking an evidentiary hearing must make a prima facie showing by affidavit; a prima facie showing refers to those facts demonstrated by admissible evidence, which would sustain a favorable decision if the evidence submitted by the movant is credited.32

In this case, however, Spaccia failed to make such a showing. Spaccia proffered evidence that Adams, prior to taking the contract with the City, contacted someone at the district attorney's office, possibly District Attorney Cooley, and was "encouraged" to take the job at the salary offered. Spaccia sought an evidentiary hearing to elicit testimony from Adams as to the identity of the person with whom he spoke, and the subject matter of the conversation. Yet, as the trial court concluded, even if Spaccia's allegations were correct and District Attorney Cooley himself encouraged Adams to take the job, this would not justify the recusal of the district attorney's office. This is so because, as we have discussed above, Spaccia has failed to establish the second element necessary for recusal, a likelihood of unfair treatment, with any evidence beyond mere speculation.33

In short, the trial court did not abuse its discretion in denying an evidentiary hearing. Even if an evidentiary hearing established everything Spaccia had hoped it would establish — that District Attorney Cooley had encouraged Adams to take the chief of police position — it would not justify recusal of the district attorney's office, because there was no evidence of a likelihood of unfair treatment.34

DISPOSITION

The petition for writ of mandate is denied.

Klein, P. J., and Kitching, J., concurred.