Suffolk Construction Co. v. Los Angeles Unified School Dist. ( 2023 )


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  • Filed 3/30/23 Certified for Partial Pub. 4/21/23 (order attached)
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SECOND APPELLATE DISTRICT
    DIVISION TWO
    SUFFOLK CONSTRUCTION                             B285400
    COMPANY, INC.,
    (Los Angeles County
    Plaintiff, Cross-defendant                  Super. Ct. No. BC541085)
    and Appellant;
    FISK ELECTRIC COMPANY,
    Plaintiff and Appellant,
    v.
    LOS ANGELES UNIFIED
    SCHOOL DISTRICT,
    Defendant and Appellant;
    R.J. DAUM CONSTRUCTION
    COMPANY,
    Defendant, Cross-
    complainant and Respondent.
    APPEAL from judgments of the Superior Court of Los
    Angeles County, Lisa Hart Cole & Maren E. Nelson, Judges.
    Affirmed in part, reversed in part.
    K&L Gates, Pierce Kavcioglu Espinosa & Cesar,
    Timothy L. Pierce, Hector Espinosa and Samira F. Torshizi for
    Plaintiff, Cross-defendant and Appellant.
    Nida & Romyn, Robert Nida and Matthew J. Luce for
    Plaintiff and Appellant.
    David R. Holmquist, Devora Navera Reed, Mark Fall;
    Theodora Oringher, Kevin A. Dorse, Jon-Jamison Hill, Helen M.
    Cho, Panteha Abdollahi and Andrew B. Breidenbach for
    Defendant and Appellant.
    Lubka & White, Laurence P. Lubka, Ronald E. White;
    Nemecek & Cole, Benedon & Serlin and Mark Schaeffer for
    Defendant, Cross-complainant and Respondent.
    ******
    This appeal arises from litigation involving a public
    construction project to build the Central Region 9th Street Span
    K-8 school in downtown Los Angeles. The Los Angeles Unified
    School District (LAUSD or District) and Suffolk Construction
    Company, Inc. (Suffolk), entered into a development and
    construction agreement dated September 13, 2011 (contract), for
    the development and building of the school. Suffolk later entered
    into subcontracts with various subcontractors, including R.J.
    Daum Construction Company (Daum) for structural concrete
    work and Fisk Electric Company (Fisk) for electrical work.
    Throughout the project, various problems arose, which caused
    delay and disruption and resulted in increased costs to Suffolk,
    Daum and Fisk. One major delay occurred after LAUSD
    2
    discovered significant cracks in the concrete foundation for the
    elementary school building. Suffolk submitted time impact
    analyses (TIA) to LAUSD seeking compensation on its own behalf
    and on behalf of the affected subcontractors due to the cost
    overruns resulting from delays, which Suffolk claimed were a
    result of LAUSD’s faulty plans.
    Suffolk sued LAUSD on April 1, 2014, alleging breach of
    the contract, implied contractual indemnity, and seeking
    declaratory relief.1 Suffolk’s first amended complaint pled
    substantially similar claims against LAUSD and added a claim
    against Daum for breach of contract.
    Trial proceeded in phases. The first phase (phase 1)
    commenced on January 30, 2017, and focused on whether LAUSD
    breached the contract by providing Suffolk with plans and
    specifications for the concrete foundations that were not correct
    (TIA 5). It was LAUSD’s position that the delays were
    attributable to Suffolk’s mismanagement of the project and that
    1      On February 28, 2014, Fisk submitted to Suffolk a certified
    claim in the amount of $1,908,157.61 for overtime acceleration
    and productivity impacts resulting from the various delays on the
    project. Suffolk passed through Fisk’s claim in its lawsuit
    against LAUSD. The notion of a pass-through claim is described
    as follows:
    “When a public agency breaches a construction contract
    with a contractor, damage often ensues to a subcontractor. In
    such a situation, the subcontractor may not have legal standing
    to assert a claim directly against the public agency due to a lack
    of privity of contract, but may assert a claim against the general
    contractor. In such a case, a general contractor is permitted to
    present a pass-through claim on behalf of the subcontractor
    against the public agency.” (Howard Contracting, Inc. v. G. A.
    MacDonald Construction Co. (1998) 
    71 Cal.App.4th 38
    , 60.)
    3
    the cracking of the concrete was attributable to Daum’s means
    and methods rather than LAUSD’s plans and specifications. The
    jury found that Suffolk substantially performed its contract and
    that LAUSD breached the implied warranty of correctness by
    providing plans and/or specifications for the concrete footing
    design that were not correct.
    The second phase (phase 2) proceeded with a different
    judge and jury and determined Suffolk’s damages for the concrete
    issue decided in phase 1 (TIA 5). The phase 2 jury also
    considered whether LAUSD had a good faith basis to withhold
    $111,714 in retention from Suffolk, and whether LAUSD
    breached the implied warranty of correctness by providing
    incorrect plans and/or specifications for various other problems
    (TIA’s 2, 3, and 4). The phase 2 jury determined, among other
    things, that LAUSD had a good faith basis to withhold the
    retention from Suffolk. Suffolk challenged the phase 2 verdict
    with a motion for new trial and motion for a judgment
    notwithstanding the verdict (JNOV). Suffolk’s motion for new
    trial was denied but its JNOV motion was granted. The trial
    court found that, contrary to the jury’s findings, LAUSD did not
    withhold the retention amount of $111,714 in good faith.
    The third phase (phase 3) of the proceedings was
    determined by cross-motions for summary adjudication. The
    central question posed by the cross-motions was whether Suffolk
    could require LAUSD to pay Daum’s attorney fee award. The
    trial court determined that LAUSD was not liable to Suffolk for
    Daum’s fees under either a theory of implied contractual
    indemnity or as damages for breach of contract.
    LAUSD appeals from the phase 1 judgment, arguing that
    there was insufficient evidence to support the phase 1 jury
    verdict, that the trial court committed instructional error, and
    4
    that the evidence did not support the jury’s verdict. LAUSD also
    appeals from the phase 2 judgment, arguing that the trial court
    erred in granting Suffolk’s motion for JNOV on the issue of good
    faith, erred in excluding LAUSD’s expert witness on the issue of
    good faith, and erred in refusing LAUSD’s proposed jury
    instructions on LAUSD’s licensing defense.
    Suffolk cross-appeals, claiming various errors in phases 2
    and 3. Suffolk challenges the jury award of damages in phase 2
    on TIA 5, arguing that the jury awarded insufficient damages
    and the trial court erred by denying its motion for new trial on
    this issue. Suffolk further challenges for lack of sufficient
    evidence, the jury verdict on TIA 2, and argues that there was an
    irreconcilable inconsistency in the jury verdicts on TIA’s 3 and 4.
    Suffolk claims that the trial court erred in granting summary
    adjudication in favor of LAUSD in phase 3. As to its attorney fee
    request, Suffolk argues the trial court abused its discretion in
    excluding certain amounts from the fee request.
    Suffolk also appeals from the trial court’s award of attorney
    fees in favor of Daum. Suffolk challenges the trial court’s
    decision to award Daum fees based on a contractual provision
    first raised in Daum’s reply brief. Suffolk argues that the
    decision was procedurally incorrect and that the contractual
    provision does not support an award of fees. Suffolk further
    argues that even if the contractual provision did support an
    award of fees, the trial court erred in failing to apportion the
    award between Suffolk and LAUSD. Finally, Suffolk challenges
    the award of damages it was found liable to pay Daum.
    Fisk also appeals, arguing that the trial court erred in
    denying Fisk’s motion for attorney fees and in denying Fisk
    prejudgment interest for the portion of its award payable from
    Suffolk.
    5
    As set forth below, we find that the phase 1 verdict must be
    reversed and remanded for retrial on the ground that the special
    jury instruction based on Public Contract Code section 1104 was
    improper, and it is reasonably probable that the error affected
    the verdict. The reversal of the phase 1 liability verdict requires
    that the phase 2 trial of damages for TIA 5 (related to the
    concrete cracking issue) must also be reversed and remanded for
    retrial. All attorney fee issues surrounding liability and damages
    for TIA 5 must also be reconsidered upon remand. Finally, the
    trial court erred in granting JNOV on the phase 2 jury verdict on
    the question of whether LAUSD had a good faith basis for
    retention of fees. Thus, the decision granting the JNOV is
    reversed with direction to reinstate the jury verdict on that issue.
    The subcontractors’ claims for attorney fees and
    prejudgment interest must also be reconsidered on remand. The
    jury verdicts on TIA’s 2, 3, and 4 are affirmed.
    FACTUAL BACKGROUND
    LAUSD entered into the contract with Suffolk on
    September 13, 2011. Through the contract, Suffolk agreed to
    construct a work of improvement for LAUSD in a project known
    as the Central Region 9th Street Span K-8 school located near
    the downtown Los Angeles Fashion District (project). The
    contract price was $39,479,112. The contract included a number
    of documents, such as general conditions, supplementary
    conditions, design plans and drawings, technical specifications for
    each phase of work, a geotechnical report, and other ancillary
    documents (collectively contract). KPFF Consulting Engineers
    (KPFF), LAUSD’s structural engineers of record (SEOR), put
    together the specifications and structural drawings for the
    project. The project included an elementary school (ES) building,
    6
    a middle school building, a multi-purpose room/locker room, and
    parking structure.
    Suffolk entered into various subcontracts in connection
    with the project, including a subcontract with Daum to perform
    structural concrete work, and a subcontract with Fisk to perform
    electrical work.
    Work on the project commenced in October 2011.
    The January 31, 2012 concrete pour
    The concrete footings for the school buildings were to be
    constructed below ground to serve as foundations for the
    buildings at the project site. By January 31, 2012, the project
    was already two months behind schedule due to delays in placing
    the concrete footings. The first pour of concrete on January 31,
    2012, for the footings consisted of 1,450 cubic yards of concrete.2
    Suffolk asserts that the concrete mix for the pour had been
    approved by the LAUSD design team. However, LAUSD points
    to conflicting evidence in the record, showing that LAUSD’s
    design team stamped Suffolk’s submittal: “This document has
    been reviewed for general conformance with design concept only
    and does not relieve the fabricator of responsibility for
    conformance with design drawings and specifications.”
    Suffolk points out that the January 31 pour was observed
    by KPFF and LAUSD’s inspector of record (IOR), Donald Shirley.
    Also present were third party inspectors from Koury Engineering
    2     The jury found that Suffolk was responsible for the delay
    surrounding the over-excavation of the concrete footings, which
    was at issue in TIA 2. LAUSD took the position that Suffolk
    asked Daum to perform the concrete pour in one large event,
    rather than spread over two nonconsecutive days as originally
    planned, in order to make up for the delay caused by Suffolk.
    7
    & Testing, Inc. (Koury), who observed the pour. Koury
    contemporaneously issued a series of inspection reports stating
    that the work met the requirements of the contract drawings and
    specifications. The inspection report noted that the mix design
    met the requirements of approved drawings and that “[a]ll
    concrete placed was mechanically vibrated and placed within
    tolerance for slump as specified on approved mix designs.”
    Koury’s deputy inspector, Jorge Delgado, testified that no
    problems with the contractor’s performance were noted. No
    notice of noncompliance for the pour procedures was issued by
    any party.
    Again, LAUSD points to conflicting evidence in the record:
    that there was evidence in the record that KPFF engineers and
    inspectors were not concrete experts, nor were they tasked with
    “signing off” on the contractor’s means and methods to achieve
    nondefective results. Further, LAUSD points out that section
    13.4 of the general conditions of the contract provides that
    inspections or observations “shall not, in any way, relieve
    CONTRACTOR from responsibility for full compliance with all
    terms and conditions of the Contract Documents.” The document
    added, “IOR is not authorized to make changes in the Contract
    Documents . . . nor shall IOR inspection of the Work and methods
    relieve the CONTRACTOR of responsibility for the correction of
    subsequently discovered defects, or from its obligation to exactly
    comply with the Contract Documents.”
    Three days after the January 31, 2012 pour, the District’s
    IOR alerted Suffolk and Daum that some parts of the foundation
    had subsided and showed checkerboard cracking patterns of the
    reinforcement bars (or rebar) inside the foundations. This
    subsidence cracking was referred to as plastic settlement
    cracking, or settlement cracking, because the concrete would
    8
    settle under the stiff rebar while it was in a wet or plastic state.
    On February 3, 2012, Shirley e-mailed photographs of the
    cracked foundation to KPFF. Shirley noted that in his experience
    the cracks were an odd occurrence. Ghanem Garawi, LAUSD’s
    owner authorized representative (OAR), had concern that Suffolk
    did not respond with urgency to investigate and correct the
    problem, for which there were safety concerns posed by the
    cracked concrete.3
    LAUSD asserts that because Suffolk and Daum did not
    take any action to rectify the cracking problem, LAUSD took the
    lead in attempting to determine the cause of the cracking and to
    assess whether the foundations were safe. KPFF investigated
    the concrete cracking through visual inspections and core
    samples to determine whether the concrete and rebar had
    debonded, which would affect the structural integrity of the
    foundation. The core samples revealed significant gaps between
    the rebar and the concrete.
    Given the safety concerns, KPFF’s principal engineer on
    the project, Gary Duncan, engaged the Division of State
    Architects (DSA), the governmental entity that oversees and
    monitors public building safety, to assess how to proceed.
    LAUSD points out that Suffolk initially blamed Daum for
    the cracking problem. Suffolk demanded that Daum “respond in
    writing . . . outlining what actions RJ Daum will take in order to
    achieve compliance with the Contract Document requirements.”
    Suffolk warned Daum that it “consider[ed] RJ Daum responsible
    for all cost and time impacts related to this issue.” In response,
    Daum disagreed that it was responsible for the failure. Neither
    3     The OAR is LAUSD’s principal point of contact for
    contractor communications.
    9
    Suffolk nor Daum made any proposals to rectify the problem in
    February or early March 2012.
    In early March 2012, LAUSD instructed Suffolk to perform
    mock pours designed to identify the causes of the problem. The
    purpose of the mock pours was to observe the procedures used by
    Suffolk and Daum and evaluate the results. The parties
    ultimately performed four mock pours to test possible alterations
    that might allow for an acceptable outcome. The fourth mock
    pour resulted in a test area that did not exhibit cracking, and
    using that process, the parties were able to pour the balance of
    the foundations.
    Mock 1—March 16, 2012
    The first mock pour occurred on March 16, 2012 (mock 1).
    Mock 1 used the same concrete mix from the same supplier as
    was used in the original pour. LAUSD’s internal structural
    engineer, Doc Nghiem, testified that LAUSD provided oversight
    at the mock pour, including “two, three engineers [and] three,
    four inspectors.” Also present were the SEOR’s Duncan and
    Aldrin Orue of KPFF.
    Daum prepared a written pour procedure, which KPFF
    approved prior to mock 1. KPFF report 8 confirmed that the pour
    followed the written pour procedure. Suffolk asserts that LAUSD
    did not request that Daum perform a procedure known as
    “revibration” of the concrete in mock 1. Further, Suffolk asserts
    that the contract did not require re-vibration of the concrete.
    LAUSD provided contrary evidence of its position on
    revibration. LAUSD points to evidence that prior to mock 1
    KPFF requested that Daum consider revibration as a potential
    way to mitigate cracking. Further, LAUSD takes issue with
    Suffolk’s claim that the contract did not require revibration.
    LAUSD points out that specification 03300 mandates that the
    10
    contractor at a minimum comply with “ACI 309 – Recommended
    Practice for Consolidation of Concrete.”4 ACI 309 discusses
    revibration and states, “[t]o eliminate [subsidence] cracking, the
    concrete should be revibrated at the latest time at which the
    vibrator will sink into the concrete under its own mass.” LAUSD
    asserts that KPFF asked Daum to consider ACI 309 when
    recommending revibration, but Daum refused to consider the
    suggestion “since it was RJ Daum’s opinion that these
    recommendations did not apply to foundations and footing
    conditions.” At a March 15, 2012 meeting involving
    representatives of KPFF, LAUSD, Suffolk, Daum, and Koury,
    KPFF “inquire[d] about re-vibration of the top lift near the time
    of initial set. R.J. Daum (JM) indicate[d] that they do not intend
    to perform re-vibration as not part or [sic] their common practice
    for foundations.”
    The results of the mock 1 pour were better than the
    original pour, but still exhibited cracking.
    On the same day as mock 1, concrete footings were poured
    at an area designated as the “[l]ocker [r]oom [a]rea.” Nghiem
    directed the contractor to revibrate a section of the pour in the
    locker room area to compare it to the unrevibrated concrete in
    mock 1. The concrete cracks in the locker room area in the small
    revibrated portion were cracked to a lesser degree than mock 1,
    though there was not much difference. Nghiem could not
    conclude that revibration was a factor that affected the cracking.
    Orue agreed that they would “not require [revibration],” but
    would “leave it up to the contractor to decide on their own if
    4    ACI is the American Concrete Institute, the leading
    authority on concrete construction.
    11
    revibration is appropriate to mitigate this particular condition as
    part of their means and method procedure for the next pour.”5
    Mock 2—April 19, 2012
    Following mock 1, KPFF recommended an “engineering
    investigation” to diagnose further issues and also recommended,
    “in addition to this, an additional mock-up with this same mix be
    poured on a section with a rat slab at the bottom of the footing,”6
    which would “allow for a side by side comparison and assist us in
    evaluating the resulting effects of the different conditions if any.”
    Suffolk also suggested the use of a rat slab for mock 2. Garawi
    did not approve of the use of a rat slab for mock 2 because Suffolk
    did not provide a proposal of what procedures Suffolk intended to
    follow.
    Mock 2 was performed on April 19, 2012, changing only the
    concrete supplier to determine whether there was a problem with
    the material. Cracking still occurred but not as severely as with
    the original pour. Witnesses from LAUSD’s design team testified
    that mock 2 was designed to determine if changing the concrete
    mix supplier made a difference. The only thing that changed in
    mock 2 was the concrete supplier, not the concrete mix recipe.
    LAUSD points out that mock 2 showed that when Daum slowed
    5      In phase 2, Michael Holliday, Daum’s project manager,
    testified about a KPFF report indicating that the locker room
    area pour, which occurred on the same day as mock 1, and where
    Ngheim had “asked for some additional vibration or revibration,”
    showed “no visible signs of concern . . . , and the foundations
    appeared to be in conformance with the project specifications
    requirements.”
    6     A rat slab is shorthand for a thin layer of concrete placed
    directly on the soil in advance of the pour to act as a barrier
    between the soil and the concrete for the footing.
    12
    its work and paid closer attention to the pour, the cracking was
    less pronounced
    Events following mock 2
    LAUSD retained concrete expert Goeffrey Hichborn from
    the concrete consulting firm Building Forensics International
    (BFI) to assist with determining the cause of the concrete
    cracking. BFI issued a preliminary report dated April 24, 2012,
    which noted a “likelihood that the reduction in concrete volume is
    specifically due to the loss of water from the fresh concrete into
    the soil . . . . This condition is commonly referred to as
    ‘subsidence cracking’ . . . .”7 Hichborn stated that the “cracking
    situation is mainly the result of the means and methods the
    concrete installer elected (or failed) to employ in the original
    placement.” As a possible solution, Hichborn’s preliminary report
    proposed the use of an admixture to reduce the loss of water.
    On May 2, 2012, Hichborn memorialized plans for a mock 3
    pour after a call with Garawi, Nghiem, and KPFF engineers
    (Duncan and Orue). Hichborn stated that subsidence occurs after
    vibration, thus he opined that “the vibration itself is irrelevant to
    the subsidence because it is occurring after you vibrated it.”
    Hichborn recommended the use of an accelerant admixture, as
    well as a “barrier to moisture transport . . . between the concrete
    and soils.”
    On the same date, Orue of KPFF presented Garawi with a
    proposal and revised plans for incorporating the use of a rat slab
    7     Subsidence is the gradual caving or sinking of the poured
    concrete.
    13
    and Visqueen layer for mock 3.8 Nghiem was in favor of following
    KPFF’s recommendation of using a rat slab and Visqueen layer
    for mock 3.
    LAUSD rejected Hichborn’s and KPFF’s proposal to use a
    rat slab or Visqueen layer for mock 3 and asked KPFF to revise
    the mock 3 plans to exclude them. Instead, Garawi instructed
    KPFF to include the use of an admixture as proposed by
    Hichborn. However, that solution turned out to be unworkable
    because the proposed admixture was not an approved chemical
    product for use on a school site.9
    Mock 3—May 10, 2012
    Garawi then decided mock 3 should proceed with the
    higher strength concrete mixture that had been used for an
    adjacent parking structure. Mock 3 was poured on May 10, 2012,
    and was unsuccessful. The same level of scrutiny was present at
    mock 3 as at earlier mock pours, and Daum poured strictly in
    accordance with the pour procedures. Mock 3 exhibited cracking
    similar to mock 1 and mock 2.
    Mock 4—May 21, 2012
    On May 14, 2012, during a call among LAUSD and its
    consultants, the parties agreed on “a rat slab with [V]isqueen
    8     Visqueen is a plastic sheeting used to isolate the sides of
    the foot excavation from the concrete and block water from
    traveling from the concrete into the vertical earth surfaces.
    9     There was conflicting testimony on the reason the
    admixture proposed by Hichborn (called Polarset) was not used.
    While Garawi testified that it was because it was not an
    approved chemical, Duncan testified that there was insufficient
    data suggesting that this particular admixture had been used
    elsewhere and “the concrete would still come up to strength and
    perform the way we expected it to.”
    14
    sides for the mockup as a way to best insure favorable results on
    the next mock-up.” On the same day, KPFF issued a
    memorandum requiring that “[t]he mud slab shall be poured a
    minimum of 3 days prior to placement of foundation concrete.
    Contractor to submit the mud slab mix design for review.”10
    Suffolk submitted a mud slab mix design to LAUSD, which was
    approved by LAUSD, KPFF and Koury, and used in mock 4. The
    KPFF memorandum also included new structural sketches (SSK)
    showing “exactly how to install the water barrier.”
    Mock 4 took place on May 21, 2012, and was successful. As
    directed, Daum installed the rat slab and Visqueen to isolate the
    concrete from the adjacent soil and the cracking did not occur.
    Mock 4 used the same concrete mix used in the January 31, 2012
    pour.
    After mock 4, Nghiem concluded that the moisture barrier
    (i.e., the rat slab and Visqueen) prevented the water from
    escaping and the “concrete [had] a chance to harden.” Thus, “the
    cracks didn’t appear.” Nghiem’s ultimate conclusion was that
    “the adverse effects of the concrete [were] due to a rapid loss of
    water from fresh concrete into the soil.” Duncan of KPFF agreed
    that the use of water barriers had eliminated the “subsidence
    that [they] had seen in the first three mock-ups.” KPFF report 12
    confirmed mock 4’s success and “the pour plan and procedures
    used for . . . mock-up [#4] appear to be acceptable for use on the
    remainder of the [foundations of the project].”
    On October 18, 2012, KPFF sent a letter summarizing the
    events surrounding the mock pours, concluding: “[T]he
    foundation issues encountered at this site extended from an
    10    The term “mud slab” is a term used interchangeably with
    the term rat slab on this project.
    15
    unfavorable reaction between the concrete and the soils. This is
    evident from the favorable results of Mock-up #4 where a barrier
    was placed between two materials. It is likely that the adverse
    effect on the concrete is due to the rapid loss of water from the
    fresh concrete into the soil.”
    Suffolk and Daum later claimed that the mock pour process
    proved the cracking was the result of a design error, because the
    rat slab and Visqueen sketches KPFF provided for mock 4
    constituted a design change that was necessary to “correct” a
    design error.
    LAUSD takes issue with Suffolk’s portrayal of the rat slab
    and Visqueen additions in mock 4 as design changes, noting that
    the SSK produced by KPFF simply showed the placement of the
    Visqueen and mud slab on the original design sheet. KPFF’s
    engineer testified that he issues supplementary drawings like
    SSK’s for many reasons, and providing a diagram like the mock 4
    SSK does not constitute a design change. Other KPFF engineers
    also testified that the SSK did not constitute a design change.
    In addition, LAUSD points out that the use of Visqueen
    was not a design change because specification 03000 permits the
    use of Visqueen. LAUSD argues that the mud slab and Visqueen
    were remedial, but not probative, of the underlying cause of the
    cracking.
    LAUSD’s alternate theories for the cause of the concrete
    cracking
    Prior to the mock pours, KPFF had identified inadequate or
    improper vibration techniques as a common cause of the type of
    cracking observed. For the mock pours, KPFF recommended that
    Daum reconsider its vibration techniques, specifically, the failure
    16
    to perform revibration. Daum did not act on this suggestion
    during the mock pours.11
    LAUSD also presented evidence suggesting that Daum’s
    concrete mix was faulty.12 In support of this argument, LAUSD
    presented testimony from a concrete engineering and concrete
    mix expert, Mateusz Radlinski, Ph.D. Radlinski’s analysis
    showed that Daum’s concrete mix used more water than was
    necessary. Radlinski testified that “the vast majority of the
    batches with maybe the exception [of] two, . . . significantly
    exceeded” the maximum water limit.” Avi Mor, Daum’s concrete
    expert, affirmed that the concrete mix Daum selected exceeded
    the water content maximum specified in the contract.
    LAUSD also presented evidence that Daum could have
    mitigated the effects of the excess water by adjusting other
    components of the concrete mix.13 The contract specifications
    gave Daum the option to use admixtures to reduce the potential
    11    In a field report prepared on March 16, 2012, KPFF
    engineers Orue and Duncan noted that revibration had not
    occurred, despite KPFF’s suggestion and referral to the ACI
    Standard Practices manual.
    12    Garawi testified that the contractor was responsible for
    creating the concrete mixture.
    13     In phase 2, LAUSD argued that it had a good faith basis to
    withhold retention funds because of its good faith belief that the
    concrete cracking was caused by contractor means and methods.
    LAUSD took the position that its good faith belief was based, in
    part, on Suffolk’s failure to adjust its concrete mix through the
    use of an admixture or by adjusting the water content. LAUSD’s
    expert, Hichborn, also testified that the water content in the
    mixture Daum used exceeded the maximum water content set by
    contract specifications.
    17
    for excess water bleeding. Daum could have offset excessive
    water with an air entraining admixture, which is a chemical that
    “generate[s] and introduce[s] small microscopic air bubbles into
    the concrete [and] increases the volume.” Admixtures are
    “broadly recognized in the industry [to] significantly
    reduce[]bleeding of concrete.” Radlinksi concluded that Daum
    should have modified the mix it selected to account for the
    excessive water.
    Radlinski also testified that Daum’s selected concrete mix
    failed to use the required aggregate composition.14 Radlinski
    testified that Daum “used incorrect size of the aggregate. Not the
    size that was specified in the concrete specification.” Daum’s own
    expert conceded that Daum failed to comply with the contract
    aggregate requirements.
    In phase 2, LAUSD presented testimony that during the
    initial January 2012 pour, there were “many areas at the
    elementary school [where] there was not cracking and there was
    no mud slab.” LAUSD points out that, had a mud slab or
    Visqueen been necessary to ensure a proper foundation pour, all
    of the ES foundations would have exhibited the same cracking
    that occurred elsewhere.
    Other delay and TIA claims
    During the project, Suffolk submitted four requests to
    extend the contract completion date, each submitted in the form
    of a TIA.
    TIA 2—over-excavation
    Early in the project, Suffolk submitted to LAUSD request
    for clarification (RFC) 62, dated October 25, 2011, to confirm
    direction to deepen or over-excavate certain areas of the footing
    14    Aggregates are small rocks or pebbles in the mix.
    18
    excavation and then refill to the original five-foot excavation
    depth in areas where the soil was not sufficiently stable. On
    October 26, 2011, LAUSD responded, citing the geotechnical
    specifications: “[I]n accordance with the project geotechnical
    report, where the recommended lateral overexcavation of 5-feet
    beyond footings could not be performed, and footings were not
    designed for passive resistance, the footing excavation should be
    deepened to the competent alluvium found at or below a depth of
    5 feet . . . .”
    This response to RFC 62, which directed Suffolk to perform
    the over-excavation work, was approved and signed by the OAR,
    the SEOR, and Geocon West, Inc. (Geocon), the geotechnical
    engineer of record.
    Suffolk asserts that uncertainty remained as to which
    areas of the footing the response to RFC 62 applied. In a
    supplemental response to RFC 62, KPFF and Geocon revised
    structural drawing sheet S201, giving more details on areas that
    required additional excavation work.
    Suffolk’s project manager, Armin Mumper, testified that
    the revised S201 drawing confirmed Geocon’s direction and
    clarified the specific locations along the property line that
    required over-digging and then filling of the footings back to the
    designed five-foot depth. Mumper attested that the information
    in the RFC 62 supplement was necessary to proceed with and
    finish the open trenches where the footings would be poured.
    On October 28, 2011, Suffolk provided to LAUSD an “Initial
    Notice of Issue/Event/Condition/Circumstance/Cause of Perceived
    Delay . . .” regarding the over-excavation issue, which it referred
    to as “Event Number 1.” On November 15, 2011, Suffolk
    retracted the “Initial Notice Event No. 1,” stating: “This
    transmittal will serve as a formal notice the Initial Notice Event
    19
    No1 dated Oct 28, 2011 for the additional over-ex, will be
    retracted by Suffolk. RFC0062 provide[s] sufficient direction to
    proceed with the over-ex at the footing. Please void the Initial
    Notice of Event No. 1 from your files.”
    LAUSD explains that the retraction was significant
    because the contract required Suffolk to submit an initial notice
    in order to assert a claim of delay. By voiding and retracting its
    Initial Notice No. 1, Suffolk communicated that it did not view
    RFC 62 as causing any delays.
    Suffolk submitted contingency allocation proposal (CAP)15
    16 for direct cost to over-excavate beyond five feet and backfill
    the areas of the footings as specified by the response to RFC 62.
    Suffolk also submitted CAP 36 for additional payment for the
    extra time and delay required to get extra direction to perform
    the extra work. In response, LAUSD issued a change order in the
    form of contingency disbursement authorization (CDA) 12,
    approving $18,750 for the direct cost to perform the extra work
    related to the over-excavation issue (CAP 16), but did not approve
    CAP 36 for associated delays.
    Suffolk submitted TIA 2 to request a time extension related
    to CAP 36. TIA 2 was submitted in August 2012 for work that
    had been performed in November 2011. LAUSD repudiated a
    negotiated change order for TIA 2 by never returning a copy
    executed by LAUSD management. Suffolk’s TIA 2 delay claim at
    trial alleged that the plans and specifications were incorrect
    because Suffolk was required to perform over-excavation that
    was not described in the plans.
    15    A CAP was a change order request, which Suffolk would
    submit for additional payments when extra work outside of the
    contract was necessary.
    20
    At trial, LAUSD pointed to evidence that the contract
    documents expressly stated that Suffolk should perform over-
    excavation at the property lines. Specifically, section 7.1.6 of the
    geotechnical investigation report required the depth of
    excavations along property lines to be increased: “Where
    excavation and compaction cannot be performed, such as adjacent
    to property lines, foundation should be deepened as necessary to
    bear in the undisturbed competent alluvium at or below a depth
    of five feet.” The provision is repeated in section 7.4.6.
    LAUSD claims the contract made it clear that the design
    drawings did not encompass every detail of potential over-
    excavation. Sections 3.1 and 3.2 of the general conditions state:
    “Any item of Work mentioned in the Specifications and not shown
    on the Drawings . . . shall be provided by Contractor as if shown
    or mentioned in both,” and “it is not the intent . . . to show on the
    Drawings all items of the Work described or specified in the
    Specifications even if such items could have been shown and/or
    specified.” Thus, LAUSD states it was not necessary for the
    drawings to delineate the specific property lines where over-
    excavation should be completed.
    In addition, LAUSD presented evidence that undercut the
    credibility of Suffolk’s TIA 2 claim by pointing out that Suffolk
    belatedly submitted TIA 2 in August 2012 for events that
    occurred in November 2011. Further, Suffolk claimed in TIA 2
    that it had been unable to perform any foundation excavations for
    17 days in November 2011 because it could not “proceed with
    excavation” absent “formal direction” on excavation
    requirements. Garawi responded to TIA 2 on September 5, 2012,
    providing photographs showing Suffolk had performed the very
    work it claimed it could not perform. On September 7, 2012,
    Garawi further responded to TIA 2, indicating “Contrary to
    21
    Contractor’s statement . . . that Contractor ‘cannot proceed with
    excavation of the concrete foundations without formal direction’,
    on 10/28/11 concrete was paced at the two footings in question . . .
    and Contractor continued to progress with the excavation of
    footing[s] for lockers/MPR . . . .” (Boldface and italics omitted.)
    On September 12, 2012, Suffolk responded to Garawi that,
    while it continued with excavations in that area, it did not do so
    at the property line where the deepening of footings was in
    question. On September 14, Garawi responded with more
    photographs refuting Suffolk’s claims, writing, “[T]ake a look at
    the attached photos on progress of footing excavation on
    11/15/11 . . . and let me know if you will be dropping this
    argument . . . .” Garawi testified at trial that the photographs
    showed that Suffolk was excavating the foundations along the
    property lines. Though Suffolk did not respond to Garawi, it
    instead resubmitted the same narrative in a revised TIA 2 claim
    approximately one year later.
    TIA’s 3 and 4—plumbing issues
    At trial Suffolk asserted that it also encountered conflicts
    in LAUSD’s drawings related to the plumbing underneath the
    floor slab for the ES. Mumper testified that the conflict was in
    LAUSD drawings, which showed plumbing pipes and concrete
    occupying the same spaces: “the plumbing pipes were going
    through the concrete foundations and the plans didn’t make
    allowances for that to take place.” Mumper testified he could not
    resolve this because “[w]e basically put the work in place as it’s
    shown on the drawings.”
    Suffolk asserts that it submitted a number of RFC’s
    seeking clarification on how LAUSD wanted to resolve the
    conflicts in the plans. For example, RFC 191 sought clarification
    for the “[w]ater closet [to be] relocated to clear the footing.”
    22
    Mumper testified that the designers “actually moved the entire
    toilet to get rid of the conflict,” a solution that could only be made
    by the licensed designers for the project. In addition to changes
    in the various RFC’s, LAUSD also issued a “bulletin” that showed
    changes to the underground plumbing system. Bulletin 2 was
    issued to resolve numerous issues, including all of the plumbing
    issues defined in the bulletin.16
    Suffolk submitted CAP 106 for approximately $62,000 for
    direct costs for additional plumbing work required to address the
    changes in bulletins 1 and 2, among others. LAUSD approved
    CAP 106.17
    Suffolk submitted TIA’s 3 and 4 to support time extension
    requests for the delay necessary to resolve and implement the
    underground plumbing changes, claiming it was unnecessary for
    Suffolk to divide the conflicts in plumbing drawings into two
    separate TIA’s, but it did so based on the relevant time periods.
    16    LAUSD states that bulletins “may contain numerous
    unrelated design revisions for different areas of the Project.” Also
    the revisions in bulletin 2 addressed several separate parts of the
    design and project. LAUSD asserts that in many cases, the
    design revisions in bulletin 2 reduced Suffolk’s scope of work or
    eliminated features from the design, adding that the fact that
    several design issues are grouped into a single bulletin or paid for
    by a single CAP does not indicate those design issues are
    identical.
    17    It is LAUSD’s position that CAP 106 paid Suffolk’s net
    increased direct costs for a broad range of changed work, reduced
    scope, and contained design-related clarifications on issues
    unrelated to any of the issues in TIA 3, TIA 4, or bulletin 2.
    Thus, LAUSD states, not all of the issues addressed in CAP 106
    are identical, nor are they related to the same design issue or the
    same area of the project.
    23
    TIA 3 addressed delays in December 2011 and TIA 4 addressed
    delays in January 2012.
    LAUSD repudiated a negotiated change order it drafted for
    TIA’s 3 and 4 by never executing the final change order.
    At trial, the jury found that the claim for TIA 3 arose from
    incorrect plans and specifications, while the claim for TIA 4 did
    not. Suffolk asserts on appeal that the jury made inconsistent
    factual determinations based on the same evidence in finding
    that the claim for TIA 3 arose from incorrect plans and
    specifications while the claim for TIA 4 did not.
    TIA 5—concrete footing delays
    Suffolk submitted TIA 5 to LAUSD seeking a time
    extension for the delay from the discovery of the concrete
    cracking after the January 2012 pour, throughout the
    implementation of the four mock pours. Suffolk submitted CAP’s
    390R2 and 390.1 seeking roughly $3.3 million in additional costs
    and impacts arising from that issue.
    CAP 390.1 included Suffolk’s claims, while CAP 390 and its
    later iterations included subcontractor claims that were being
    passed through to LAUSD, including claims by Daum and Fisk.
    LAUSD rejected TIA 5, CAP 390 and CAP 391.
    PROCEDURAL HISTORY
    Pleadings and pretrial orders
    Suffolk filed the original complaint in this action against
    LAUSD on April 1, 2014, alleging breach of contract, implied
    contractual indemnity and seeking declaratory relief. LAUSD’s
    demurrer to all causes of action was overruled as to the breach of
    contract and indemnity claims.
    On July 24, 2014, LAUSD filed its answer and asserted
    affirmative defenses claiming, in part, that Suffolk’s alleged
    24
    damages were the result of the conduct of Suffolk and its
    subcontractors. On November 14, 2014, Suffolk filed a first
    amended complaint adding Daum as a defendant and alleging
    contractual indemnity against Daum in the event LAUSD could
    prove its contention that the concrete cracking was caused by
    Daum’s poor workmanship.
    On January 2, 2015, Daum filed a cross-complaint against
    Suffolk for breach of contract, quantum meruit, open book
    account, and violation of prompt payment statutes.
    On November 7, 2016, the trial court bifurcated trial,
    ordering a phase 1 trial to determine only liability for the
    concrete cracking. Phase 2 of trial was to cover damages for the
    concrete cracking issue, as well as liability and damages for all
    other claims.
    Phase 1 of trial
    Phase 1 of trial commenced on January 30, 2017. The jury
    returned a special verdict on February 15, 2017, finding that
    Suffolk did all, or substantially all, of the significant things
    required by its contract with LAUSD and that LAUSD breached
    the implied warranty of correctness of plans and specifications by
    providing project plans or specifications for the concrete footing
    design that were not correct.
    LAUSD brought a motion for JNOV and a motion for new
    trial after the phase 1 verdict. In its JNOV motion, LAUSD
    argued that no substantial evidence supported the jury’s special
    verdict on liability. On August 30, 2017, the trial court provided
    a written ruling rejecting this argument and denying the motion
    for JNOV. In its motion for new trial, LAUSD raised numerous
    claims including that the trial court erred by giving Suffolk’s jury
    instruction regarding Public Contract Code section 1104 and
    failing to give LAUSD’s proposed instruction on CACI 4510. The
    25
    trial court rejected LAUSD’s arguments and denied the motion
    for new trial.
    Phase 2 of trial
    Before a different jury and a different judge, phase 2 of the
    trial began on April 11, 2017. Two new parties participated in
    the phase 2 trial: Fisk and Maya Steel Fabrication, Inc. (Maya),
    each making pass-through claims.
    On May 4, 2017, the jury rendered its special verdict that
    LAUSD did not breach the implied warranty of correctness of
    plans and specifications as to TIA 2 and TIA 4. The jury did find
    that LAUSD breached the implied warranty of correctness of
    plans and specifications as to TIA 3, but that the breach was not
    a substantial factor in causing harm to Suffolk.
    As to LAUSD’s withholding of $111,714 in retention from
    Suffolk, the jury found that in December 2013 LAUSD had a good
    faith basis to withhold the money from Suffolk.
    The jury awarded Suffolk a total of $2,296,748.05 for TIA 5,
    which included all amounts properly passed through on behalf of
    subcontractors Fisk, Daum, and Maya. The jury allocated from
    its total award to the various subcontractors: $1,046,479 to Fisk;
    $699,635 to Daum; and $222,055 to Maya. The jury found that
    $624,559.63 of Fisk’s award was not the responsibility of LAUSD.
    Similarly, the jury found that $147,658 of Daum’s award was not
    the responsibility of LAUSD.
    Suffolk filed motions for new trial and for JNOV.
    The motion for new trial, among other grounds, was made
    on the ground that the phase 2 damage award was contrary to
    the phase 1 verdict and undisputed facts presented in the phase 2
    trial. The trial court denied Suffolk’s motion for new trial.
    Suffolk’s JNOV motion was based in part on Suffolk’s
    position that the jury erred in determining that LAUSD had a
    26
    good faith basis to withhold the retention of $111,714 in
    professional services. The trial court granted this motion, finding
    that, while at the time of the initial pour there was uncertainty
    as to the cause of the concrete cracking, after the fourth mock
    pour, LAUSD could not reasonably believe that the problem arose
    from the contractor’s means and methods. The trial court
    concluded that on this issue only a JNOV was appropriate.
    Posttrial fee motions
    Suffolk moved for attorney fees against LAUSD as the
    prevailing party on its prompt payment penalty claim, pursuant
    to Public Contract Code section 7107.
    Daum moved for attorney fees against LAUSD and Suffolk
    under Public Contract Code section 7107 and section 8.6.2 of the
    subcontract.
    On April 12, 2018, the trial court entered its “Order Re
    Attorneys’ Fees and Prejudgment Interest” (attorney fees order),
    finding that Suffolk was entitled to attorney fees from LAUSD
    under Public Contract Code section 7107, subdivision (f), in the
    amount of $400,000. The court awarded Daum the full amount of
    its requested attorney fees, $775,523, from Suffolk.
    Phase 3 of trial
    The issue in phase 3 was whether Suffolk could compel
    LAUSD to pay Daum’s attorney fee award pursuant to Suffolk’s
    implied contractual indemnity or breach of contract causes of
    action. The trial court determined that LAUSD was not liable to
    Suffolk for Daum’s fees under either a theory of implied
    contractual indemnity or breach of contract. Accordingly,
    LAUSD’s motion was granted, and Suffolk’s motion was denied.
    Notices of appeal
    LAUSD filed a notice of appeal following phase 1 and the
    posttrial motions on September 8, 2017. This court stayed the
    27
    appeal in a written order on December 15, 2017, to allow the trial
    court to resolve remaining issues.
    Suffolk filed a notice of appeal from the April 12, 2018
    phase 2 judgment on May 23, 2018.
    On May 7, 2019, the trial court filed a final amended
    judgment on jury verdict and postverdict rulings.
    Although both parties had previously appealed, both
    parties filed notices of appeal following the entry of the final
    amended judgment. Suffolk filed a notice of appeal from the
    amended judgment on June 24, 2019. LAUSD filed a notice of
    appeal of the amended judgment on June 26, 2019.
    DISCUSSION
    I.     LAUSD’s direct appeal
    LAUSD raises five issues in its appeal from the judgment,
    three issues concerning phase 1 of trial and two issues concerning
    phase 2 of trial. As to phase 1, LAUSD argues that the trial
    court erred when it refused to give its modified proposed jury
    instruction based on CACI No. 4510 concerning its affirmative
    defense that Suffolk failed to competently perform its work, and
    instead gave Suffolk’s special Public Contract Code section 1104
    (section 1104) jury instruction concerning a public entity’s
    responsibility for the completeness and accuracy of plans and
    specifications. In addition, LAUSD argues that substantial
    evidence did not support the phase 1 verdict.
    As to phase 2, LAUSD argues that the trial court
    improperly precluded it from presenting certain expert testimony
    related to the good faith retention of funds and that the trial
    court erred by granting JNOV in favor of Suffolk on the part of
    the phase 2 verdict related to LAUSD’s good faith retention of
    funds. Further, LAUSD argues that the trial court erred in
    28
    declining to give LAUSD’s proposed jury instruction regarding its
    defense related to Suffolk’s licensure status.
    We first address the issues concerning phase 1 of trial and
    conclude (1) the special section 1104 instruction was erroneous
    and prejudicial, therefore requiring retrial on the issue of liability
    for the concrete cracking; (2) the CACI No. 4510 instruction, if
    error, constituted harmless error; and (3) LAUSD’s substantial
    evidence claim is moot, as the matter will be remanded for
    retrial.
    We next address the issues concerning phase 2 of trial and
    conclude that the trial court erred in granting JNOV in favor of
    Suffolk on the part of the phase 2 verdict related to LAUSD’s
    good faith retention of funds. We find no error in the trial court’s
    refusal to give LAUSD’s proposed jury instruction on Suffolk’s
    licensure status.
    A.     Instructional error—phase 1
    Instructional error is subject to a de novo standard of
    review. (People v. Manriquez (2005) 
    37 Cal.4th 547
    , 581, 584.) It
    is primarily a legal inquiry in which we need not give deference
    to the trial court’s decision. (People v. Waidla (2000) 
    22 Cal.4th 690
    , 733.) “[W]here it is contended that the trial judge gave an
    erroneous instruction,” we must “view the evidence in the light
    most favorable to the claim of instructional error.” (Mize-
    Kurzman v. Marin Community College Dist. (2012) 
    202 Cal.App.4th 832
    , 845 (Mize-Kurzman).)
    However, the giving of an erroneous jury instruction should
    not be disturbed unless, “‘after an examination of the entire
    cause, including the evidence, the court shall be of the opinion
    that the error complained of has resulted in a miscarriage of
    justice.’” (Soule v. General Motors Corp. (1994) 
    8 Cal.4th 548
    , 580
    (Soule).) Instructional error is prejudicial in a civil case where
    29
    “‘“‘it seems probable’ that the error ‘prejudicially affected the
    verdict.’”’” (Mize-Kurzman, supra, 202 Cal.App.4th at p. 846.)
    1. Suffolk’s special section 1104 jury instruction
    a.    Relevant factual background
    One of LAUSD’s defenses on the concrete cracking issue
    was that Suffolk was responsible for selecting the concrete mix
    using its ingenuity and experience. LAUSD’s position was that if
    nondefective concrete was poured by Suffolk using a different
    concrete mix, the rat slab and Visqueen would have been
    unnecessary. LAUSD argued that Suffolk did not prove that it
    was impossible or impracticable to select a concrete mix that
    would not have cracked in the absence of a rat slab and Visqueen.
    In support of this argument, LAUSD presented expert
    testimony from Radlinski, a concrete engineering and concrete
    mix expert, who testified that the concrete mix had more water
    than necessary and exceeded the maximum water limit. LAUSD
    also presented evidence that Daum could have used admixtures
    to reduce the cracking and failed to use the correct aggregate
    composition within the mix.
    Thus, in avoiding liability on the issue of the concrete
    cracking, LAUSD relied in part on the premise that the selection
    of the concrete mix was Suffolk’s responsibility and that the
    selection of concrete mix was faulty.
    b.    Special instruction and section 1104
    Suffolk’s special instruction No. 13 was based on section
    1104.18 The instruction read: “No local public entity shall require
    18    Section 1104 states: “No local public entity, charter city, or
    charter county shall require a bidder to assume responsibility for
    the completeness and accuracy of architectural or engineering
    plans and specifications on public works projects, except on
    30
    a bidder to assume responsibility for the completeness and
    accuracy of architectural or engineering plans and specifications
    on public works projects.”
    Section 1104 was enacted to prohibit a public entity from
    transferring design responsibility to the contractor. The
    legislative history shows that the Legislature accepted the long-
    standing division of responsibilities on public construction
    projects set forth in United States v. Spearin (1918) 
    248 U.S. 132
    (Spearin).19 However, the Legislature noted a “recent trend by
    local entities to utilize contract provisions to transfer design
    liability from architects to general contractors.” (Sen. Rules
    Com., Off. of Sen. Floor Analyses, 3d reading analysis of Assem.
    Bill No. 1314 (1999-2000 Reg. Sess.) as amended Sept. 2, 1999,
    p. 3.) The Legislature noted that this trend ran “counter to the
    clearly designated design build projects. Nothing in this section
    shall be construed to prohibit a local public entity, charter city, or
    charter county from requiring a bidder to review architectural or
    engineering plans and specifications prior to submission of a bid,
    and report any errors and omissions noted by the contractor to
    the architect or owner. The review by the contractor shall be
    confined to the contractor’s capacity as a contractor, and not as a
    licensed design professional.”
    19     Spearin is regarded as the seminal case setting forth the
    division of responsibilities between a public entity and a
    contractor. Spearin set forth the principle that “if the contractor
    is bound to build according to plans and specifications prepared
    by the owner, the contractor will not be responsible for the
    consequences of defects in the plans and specifications.”
    (Spearin, supra, 248 U.S. at p. 136.) This law is the foundation of
    the cause of action for breach of implied warranty of correctness
    of plans and specifications and is sometimes referred to as the
    Spearin doctrine.
    31
    long-standing division of responsibilities on construction projects
    which was formally recognized by the U.S. Supreme Court in
    [Spearin].” (Ibid.) Due to this trend of contractual shifting of
    responsibilities, the Legislature enacted section 1104 to prohibit
    public entities from requiring bidders to assume such
    responsibilities. The purpose of section 1104 was thus to prevent
    public entities from attempting to contract around the Spearin
    doctrine.
    Case law interpreting section 1104 is sparse. However, the
    few available cases support the premise that section 1104 is not
    relevant to a claim for breach of warranty of the correctness of
    plans and specifications. Instead, its purpose is to prevent public
    entities from attempting to contract around their obligation to
    provide correct plans and specifications. (Thompson Pacific
    Construction, Inc. v. City of Sunnyvale (2007) 
    155 Cal.App.4th 525
    , 553 (Thompson) [“Section 1104 prevents the public entity
    from placing the risk of accuracy and completeness of the plans
    and specifications upon the contractor. It says nothing about the
    contractor’s burden to prove that the public entity breached the
    warranty [of correctness].”].) In Thompson, a contractor hired by
    a city to construct a public project brought an action against the
    city to recover for extra work. When the city prevailed at trial,
    the contractor appealed, arguing, in part, that the trial court
    erred by declining to give the jury its proposed instruction based
    on section 1104.20 The Thompson court rejected the contractor’s
    20    The contractor’s proposed instruction read, “‘[The city] had
    a duty to provide adequate plans and specifications. [Thompson]
    had no responsibility for the adequacy of [the city’s] plans and
    specifications, nor any duty to supplement any inadequacy of
    32
    argument, finding that the trial court did not err in refusing this
    instruction. As the Thompson court noted, section 1104 is not
    relevant to a contractor’s claim that a public entity breached the
    warranty of correctness. (Thompson, at p. 553.)
    In Los Angeles Unified School Dist. v. Great American Ins.
    Co. (2010) 
    49 Cal.4th 739
     (Great American), the Supreme Court
    addressed in detail the requirements for a contractor’s claim
    against a public entity when the contractor is misled by incorrect
    plans and specifications and, as a result, submits a bid that is
    lower than the contractor would have otherwise made. The Great
    American court held that the contractor need not prove
    affirmative fraudulent intent to conceal in order to recover
    additional compensation for the public entity’s failure to disclose
    material information. (Id. at pp. 753-754.) In explaining the
    effect of section 1104, the Great American court stated,
    “although . . . section 1104 prohibits local public entities from
    requiring bidders to assume responsibility for the completeness
    and accuracy of architectural or engineering plans and
    specifications, public entities retain the power to contractually
    disclaim responsibility for assumptions a contractor might draw
    from the presence or absence of information.” (Great American,
    at p. 752.) This language, which concerns a public entity’s
    contractual powers, supports an interpretation of section 1104
    that limits it to a formal or contractual shifting of responsibility.
    The language of the statute, the legislative history, and the
    limited case law available suggest that section 1104 is applicable
    only where a public entity attempts, through contractual
    language or other formal means, to require a bidder to assume
    those plans and specifications.” (Thompson, supra, 155
    Cal.App.4th at p. 552.)
    33
    responsibility for the completeness and accuracy of architectural
    or engineering plans and specifications on a public works project.
    Suffolk has made no such claim in this case.
    c.    LAUSD’s arguments
    LAUSD argues that there was no basis for the trial court to
    give the section 1104 instruction, since LAUSD’s contract did not
    transfer design responsibility to Suffolk. In fact, the instruction
    was irrelevant, as it has no application to a claim for breach of
    the implied warranty of correctness. (Thompson, supra, 155
    Cal.App.4th at p. 553.) LAUSD argues that the broad instruction
    allowed Suffolk to argue that requiring Suffolk to competently
    choose an appropriate concrete mix violated section 1104.
    LAUSD argues that there is no legal precedent that prohibits a
    government agency from allowing the contractor the
    responsibility and flexibility to use its expertise to select a
    concrete mix that best suits its methods and the conditions of the
    project.
    i.     Irrelevance of section 1104
    LAUSD argues that the contract specifications for the
    concrete mix, found in specifications 02317 and 03300, did not
    require Suffolk to assume responsibility for the correctness of
    LAUSD’s design.21 Instead, these were proper objective
    21    LAUSD points to numerous contractual provisions that set
    general performance specifications for the concrete mix—not
    specific design formulas. specification 03300, section 1.2A.9,
    required compliance with ACI Publication 309, “Recommended
    Practice for Consolidation of Concrete.” ACI 309.2R-98, section
    2.2 states, “Specifications should be sufficiently broad in scope to
    permit adjustments of mixture proportions . . . Accepted mixture
    proportions may need adjustments to produce the desired
    34
    performance standards, which allowed the contractor to select the
    proportions and ingredients in the concrete mix within the
    parameters of LAUSD’s design. This allowed Suffolk, the entity
    with the most extensive expertise in performing concrete work, to
    select the appropriate concrete mix. LAUSD points to federal
    and foreign authority suggesting that the Spearin doctrine does
    not apply to performance specifications, but only to design
    specifications.22 LAUSD presented testimonial evidence that an
    concrete characteristics and to minimize consolidation problems.”
    Daum’s concrete expert, Dr. Mor, testified that such performance
    specifications are preferred and agreed that the contract in this
    case gave parameters for the concrete mix, but still allowed the
    contractor to determine the overall mix. Specification 03300,
    section 1.5A, required Suffolk to use a “registered civil engineer
    with experience in concrete mix design [to] select the relative
    amounts of ingredients to be used as basic proportions of the
    concrete mixes proposed for use under the provisions of ACI
    318 . . . .” Specification 03300, section 2.2D provided that
    “[p]roportions of materials shall provide workability and
    consistency to permit concrete to be placed readily into forms and
    around reinforcement under conditions of placement to be
    employed, without segregation or excessive bleeding.” ACI 318-
    08, section 5.2.1, provides that concrete mix proportions “shall”
    provide workability “without segregation or excessive bleeding.”
    The specifications also allowed Suffolk to use admixtures in the
    concrete mix and set ranges for the sizes of the aggregates.
    22    “While there are two types of specifications, design and
    performance, only a design specification creates an implied
    warranty. [¶] Performance specifications ‘set forth an objective
    or standard to be achieved, and the successful bidder is expected
    to exercise his ingenuity in achieving [it].’” (James Talcott
    Constr. Inc. v. United States (Ct.Cl. Mar. 4, 2019, No. 14-427C)
    
    2019 WL 1040383
    , *4; see also Aleutian Constructors v. United
    35
    experienced contractor will have a wealth of knowledge about the
    performance of different concrete mixes in different
    circumstances and that the contract gave the contractor leeway
    to determine the best mix for the construction. Suffolk did not
    claim that these contractual provisions regarding the parameters
    for the concrete mix violated section 1104.
    LAUSD argues that the instruction was not necessary to
    establish any of the elements of Suffolk’s claim for breach of
    implied warranty of correctness of plans and specifications.23
    Instead, as explained above, section 1104 was designed to
    prohibit “local entities [from] utili[zing] contract provisions to
    transfer design liability from architects to general contractors.”
    (Sen. Rules Com., Off. of Sen. Floor Analyses, 3d reading analysis
    of Assem. Bill No. 1314 (1999-2000 Reg. Sess.) as amended
    Sept. 2, 1999, p. 3.) Thus, LAUSD argues, section 1104 was
    enacted to prevent public agencies from contracting around the
    States (Ct.Cl. 1991) 24 Cl.Ct. 372, 390; Haehn Management Co. v.
    United States (Ct.Cl. 1988) 15 Cl.Ct. 50, 56; District of Columbia
    v. District of Columbia Contract Appeals Bd. (D.C.App. 2016) 
    145 A.3d 523
    , 536; Florida Bd. of Regents v. Mycon Corp.
    (Fla.Dist.Ct.App. 1995) 
    651 So.2d 149
    , 153.)
    23     The breach of implied warranty of correctness applies
    where plans and specifications include an incorrect
    representation. Under such circumstances, a contractor “‘may
    recover . . . for extra work or expenses necessitated by the
    conditions being other than as represented.’” (Great American,
    
    supra,
     49 Cal.4th at p. 748.) “This rule is mainly based on the
    theory that the furnishing of misleading plans and specifications
    by the public body constitutes a breach of an implied warranty of
    their correctness.” (Souza & McCue Constr. Co. v. Superior Court
    (1962) 
    57 Cal.2d 508
    , 510-511.) The Souza court cited the
    seminal 1918 decision in Spearin, 
    supra,
     
    248 U.S. 132
    , 136-137.
    36
    implied warranty of correctness. It did not change the
    fundamental elements or scope of a claim for breach of implied
    warranty of correctness. (Thompson, supra, 155 Cal.App.4th at
    p. 553.)
    ii.   Prejudice
    LAUSD argues that Suffolk improperly used the special
    section 1104 instruction in closing argument. Specifically,
    Suffolk argued: “This is a California statute, a code section, so the
    contract can’t override it. Any provision that the school district
    stands up this afternoon and says, well, this requires the
    contractor to adjust the mix to fix this problem is in violation of
    the statute.”
    Suffolk continued that, “essentially, now [LAUSD is] saying
    the contractor should have designed the [concrete] mix,” but “the
    public agency cannot transfer this design responsibility to the
    contractor.”
    LAUSD argues that Suffolk used its section 1104
    instruction to argue that by not giving Suffolk a precise recipe for
    the concrete mix, LAUSD violated section 1104 by unlawfully
    requiring the contractor to assume responsibility for the
    completeness and accuracy of LAUSD’s plans and specifications.
    LAUSD argues that this premise, and Suffolk’s use of its section
    1104 instruction, were improper and misstated the law.
    d.     Suffolk’s counterarguments
    Suffolk takes a broader interpretation of section 1104,
    arguing that it is not limited to a contractual shifting of
    responsibility for the completeness and accuracy of architectural
    or engineering plans and specifications. Suffolk argues that
    section 1104 places the burden on the public entity to issue
    correct and complete design plans and prohibits the public entity
    from requiring the bidder to assume responsibility for the
    37
    completeness and accuracy of such plans and specifications.
    Suffolk takes the position that charging LAUSD with
    responsibility for design errors and omissions is consistent with
    section 1104, and the instruction was relevant to LAUSD’s
    contention that Suffolk should have taken responsibility to
    develop a new concrete mix to solve the cracking problem.
    Suffolk points out that LAUSD argued that Suffolk had a
    responsibility to alter the concrete mix to attempt to fix the
    concrete cracking problem, but the cracking problem ultimately
    was resolved by the addition of a water barrier. Suffolk argues
    that this attempt to shift design responsibility to Suffolk was
    contrary to section 1104 and justified the need for the instruction.
    With this argument, Suffolk essentially asks us to adopt its
    view of the facts—that the cracking was caused by a design
    flaw—specifically, the failure of LAUSD to include a rat slab and
    Visqueen in the design. However, it ignores LAUSD’s factual
    argument below, which was that, had Suffolk provided a proper
    concrete mix, the rat slab and Visqueen would have been
    unnecessary. Suffolk cites no law suggesting that section 1104
    rendered the contract provisions regarding Suffolk’s flexibility to
    determine the proper concrete mix unlawful. Nor does it cite any
    law suggesting that placing the ultimate responsibility for the
    concrete mix on the contractor is an improper shifting of
    responsibility under section 1104.
    Suffolk further points out that changes to the concrete mix
    in both mock 2 and mock 3 did not eliminate the cracking, thus
    the problem was not remedied by a mix alteration in any event.24
    24   Mock 2 changed only the concrete supplier, not the concrete
    mix. Mock 3 used a higher-strength concrete mixture that had
    38
    Again, Suffolk asks us to adopt its view of the facts and does not
    address the problem of whether inclusion of the section 1104
    instruction, and Suffolk’s improper use of the instruction,
    prevented the jury from placing the blame on Suffolk’s selection
    of the concrete mix—which was one of LAUSD’s main defenses to
    this factual conclusion.
    e.    Analysis
    The sole issue to be determined in phase 1 of trial was
    whether LAUSD breached the implied warranty. LAUSD is
    arguing that (1) the instruction was irrelevant, as section 1104 is
    not relevant to a claim of breach of implied warranty of
    correctness; and (2) the way that Suffolk used the instruction was
    misleading to the jury, and therefore prejudicial.
    i.    Relevance
    Suffolk did not contend that the contract expressly declared
    Suffolk responsible for any architectural or engineering plans.
    Nor did Suffolk contend that those provisions of the contract,
    which gave Suffolk leeway to choose the concrete mix, violated
    section 1104. Instead, the only issue before the jury in phase 1
    was whether LAUSD breached the implied warranty of
    correctness. Section 1104 is not relevant to such a claim.
    (Thompson, supra, 155 Cal.App.4th at p. 553.)
    A trial court “has the duty to instruct on general principles
    of law relevant to the issues raised by the evidence.” (People v.
    Saddler (1979) 
    24 Cal.3d 671
    , 681.) It has “the correlative duty
    ‘to refrain from instructing on principles of law which not only
    been used for an adjacent parking structure. However, Suffolk
    points to no evidence in the record that mock 3 addressed the
    concerns set forth by LAUSD’s experts concerning water content,
    possible use of an admixture, and aggregate level of the mix.
    39
    are irrelevant to the issues raised by the evidence but also have
    the effect of confusing the jury or relieving it from making
    findings on relevant issues.’” (Ibid.)
    Section 1104 is not relevant to Suffolk’s claim of breach of
    implied warranty, therefore the trial court committed error in
    giving the instruction. (People v. Guiton (1993) 
    4 Cal.4th 1116
    ,
    1129 [“It is error to give an instruction which, while correctly
    stating a principle of law, has no application to the facts of the
    case.”].) However, such error is subject to reversal only if it was
    prejudicial to the appealing party. When a jury receives an
    improper instruction in a civil case, “prejudice will generally be
    found only ‘“[w]here it seems probable that the jury’s verdict may
    have been based on the erroneous instruction . . . .”’” (Soule,
    supra, 8 Cal.4th at p. 574.)
    ii.    Prejudice
    Suffolk used section 1104 to declare that LAUSD alone was
    responsible for choosing the concrete mix and was not allowed to
    shift that burden to Suffolk. Suffolk essentially used the
    instruction to argue that LAUSD was breaking the law by
    suggesting Suffolk was responsible for choosing an appropriate
    concrete mix and that such action wrongly transferred design
    responsibility to the contractor.
    In its closing argument, Suffolk argued:
    “And essentially, now they’re saying the contractor should
    have designed the mix further to make up for the error that was
    left by KPFF. [¶] . . . [¶]
    “And there’s a jury instruction that’s right on point.
    “‘No local public entity shall require a bidder to assume
    responsibility for the completeness and accuracy of the
    engineering plans.’
    40
    “In other words, you the public agency cannot transfer this
    design responsibility to the contractor. Why? Because we want
    the smart people doing this. We want the people with the stamps
    doing this, not the contractors. These are public buildings used
    by the public and we don’t want the designers to shirk their
    responsibilities and hand this off to the contractors.
    “And this is a California statute, a code section, so the
    contract can’t override it. Any provision that the school district
    stands up this afternoon and says, well, this requires the
    contractor to adjust the mix to fix this problem is in violation of
    the statute.”
    Suffolk emphasized again in its rebuttal:
    “Clearly, we’ve seen there’s a Public Contract Code section
    that says the contract—the owner can’t shift it. And you know
    why that section exists? Why do we have any statute? It’s to
    prevent people from doing things like they’ve been doing.
    “The reason we have that statute is because owners have
    tried for years to shift that design responsibility to the contractor.
    And the state spoke and said you can’t do that. The design must
    stay with the designers, the people with the stamps.”
    This argument is at odds with both the language of the
    contract and the testimony at trial—all of which suggested that
    Suffolk, not LAUSD, was responsible for choosing the concrete
    mix within the parameters set by LAUSD’s designers and
    engineers. The testimony at trial, including testimony from
    Daum’s own expert that it was acceptable, indeed “preferred,”
    that the contractor be permitted to choose the specific concrete
    mix, undermines Suffolk’s position on appeal that this
    41
    responsibility was wrongly shifted to Suffolk.25 Suffolk’s special
    section 1104 instruction allowed Suffolk to improperly argue that
    LAUSD’s affirmative defense, which shifted blame to Suffolk for
    providing a faulty concrete mix, was in violation of the law.
    In reviewing instructional error, we must view the evidence
    in the light most favorable to the claim of instructional error.
    (Mize-Kurzman, supra, 202 Cal.App.4th at p. 845.) Here, the
    dispute between LAUSD and Suffolk was whether LAUSD
    breached the warranty of correctness by providing faulty plans.
    As part of its defense, LAUSD argued to the jury that it was not
    faulty plans, but faulty workmanship on the part of Suffolk, that
    caused the concrete cracking. Among its arguments that
    Suffolk’s workmanship was at fault was LAUSD’s claim that
    Suffolk provided an improper concrete mix. Through the use of
    the irrelevant special section 1104 instruction, Suffolk was
    permitted to argue that shifting responsibility for the concrete
    mix to Suffolk was illegal.
    We conclude that it is probable that this error prejudicially
    affected the verdict. (Mize-Kurzman, supra, 202 Cal.App.4th at
    p. 846 [instructional error is prejudicial in a civil case where “‘“‘it
    seems probable’ that the error ‘prejudicially affected the
    verdict’”’”].) We must consider LAUSD’s evidence on this point,
    25     Daum’s expert, Mor, testified that a performance
    specification is one that tells the concrete contractor, “You need to
    provide concrete that will do what—something that we want it to
    do. We don’t tell you how to do that. For example, you can tell
    me, ‘I want concrete that is 4,000 PSI strong.’ I’m not telling you
    how to mix it. That’s up to you.” Mor was then asked, “And you
    believe that a performance specification is a beneficial, preferred
    way to have a concrete specification?” Mor responded, “I believe
    so, yes.”
    42
    which suggested an improper concrete mix, and view it in the
    light most favorable to LAUSD. (Id. at p. 845 [“Where it is
    contended that the trial judge gave an erroneous instruction,” we
    must “view the evidence in the light most favorable to the claim
    of instructional error.”].) We therefore assume the jury may have
    been persuaded by LAUSD’s argument had it not been informed
    that it was illegal under section 1104. Therefore, not only was
    the instruction improper, we find it reasonably probable that the
    error affected the verdict.
    Due to this instructional error, the phase 1 verdict must be
    reversed. However, for the benefit of the parties upon retrial, we
    review the other claimed instructional error in phase 1.
    2. LAUSD’s modified CACI No. 4510 instruction
    a.    Relevant factual background
    As part of its phase 1 defense, LAUSD contended that the
    failure by Suffolk and Daum to perform competently and within
    LAUSD’s specifications caused the defective cracked
    foundations.26 LAUSD sought to submit a modified version of
    CACI No. 4510 to the jury explaining its defense that if Suffolk
    26    LAUSD put forth two affirmative defenses based on this
    theory. Its eighth affirmative defense, titled
    “Intervening/Superseding Cause,” asserts that “[t]o the extent
    that the alleged injuries and damages sustained by [Suffolk], if
    any, were caused by the intervening and superseding actions of
    others, such intervening and superseding actions bar and/or
    diminish [Suffolk]’s recovery, if any, against LAUSD.” LAUSD’s
    29th affirmative defense, titled “Comparative Fault,” asserts, “To
    the extent any injuries alleged in the Complaint were caused, in
    whole or in part, by [Suffolk] or a third party’s negligent
    performance of the contract, LAUSD’s liability, if any, to [Suffolk]
    must be barred or reduced in proportion to the amount of
    negligence or other fault attributable to [Suffolk] or others.”
    43
    suffered harm or damage, it was the result of Suffolk’s failure to
    comply with the contract specifications rather than LAUSD’s
    specifications or design.
    Normally, CACI No. 4510 is framed as an affirmative
    showing by a plaintiff alleging that a contractor caused a
    construction defect.27 LAUSD’s modified proposed instruction
    read: “As an affirmative defense, LAUSD claims that Suffolk and
    Daum failed to install the concrete competently and failed to use
    the proper materials for the Project. To establish this claim,
    LAUSD must prove all of the following: [¶] (1) That Suffolk
    and/or Daum failed to perform their work competently and/or
    provide the proper materials by pouring concrete that was
    deficient and did not meet contract specifications, and [¶] (2)
    That Suffolk and/or Daum’s failure was a substantial cause of the
    damages claimed by Suffolk and/or Daum.”
    The trial court declined to give LAUSD’s special instruction
    No. 4510. The court explained, “that was really in the same
    27    CACI No. 4510 typically reads:
    “[Name of plaintiff] claims that [name of defendant] failed
    to [perform the work for the [project . . . ] competently/[or] use the
    proper materials for the [project . . . ]. To establish this claim,
    [name of plaintiff] must prove all of the following:
    “1. That [name of defendant] failed to [perform . . . ] work
    competently/[or] provide the proper materials] by [describe
    alleged breach . . . ]; and
    “2. That [name of plaintiff] was harmed by [name of
    defendant]’s failure.” (CACI No. 4510 (2023 ed.) p. 1271.)
    44
    nature as Suffolk’s No. 1. And so the court said it would give
    either both or neither, and LAUSD chose neither.”28
    LAUSD argues that the trial court erroneously required
    LAUSD to assent to Suffolk’s improper instruction No. 1 in order
    to have LAUSD’s own instruction given. LAUSD contends that
    tying the two instructions together was error because it violates
    the fundamental rule that a party is entitled to instructions
    supported by the law and facts. (Ayala v. Arroyo Vista Family
    Heath Center (2008) 
    160 Cal.App.4th 1350
    , 1358 (Ayala).)
    LAUSD argues that the trial court should have independently
    evaluated the two instructions on their own merits rather than
    forcing LAUSD to compromise its right to receive a proper
    instruction by agreeing to what LAUSD argues is an improper
    instruction.29
    b.     Applicable law
    Parties are entitled to instructions that explain the theories
    advanced in pleadings and supported by the evidence. (Code Civ.
    Proc., §§ 607a, 608; Ayala, supra, 160 Cal.App.4th at p. 1358.) It
    is “improper to give an instruction which lacks support in the
    evidence, even if the instruction correctly states the law.”
    (LeMons v. Regents of University of California (1978) 
    21 Cal.3d 869
    , 875.) In reviewing the evidence supporting the jury
    instruction, “we assume the jury might have believed appellant’s
    28     Suffolk’s proposed Special Instruction No. 1 stated: “Plans
    and/or specifications for a project are not ‘correct’ if the contractor
    follows the plans and/or specifications but still encounters
    difficulty in constructing the project.”
    29    Suffolk does not appeal the propriety of the trial court’s
    decision to decline its Special Instruction No. 1, therefore we do
    not directly address the propriety of that instruction.
    45
    evidence and, if properly instructed, might have decided in
    appellant’s favor.” (Mayes v. Bryan (2006) 
    139 Cal.App.4th 1075
    ,
    1087.) Thus, “‘we state the facts most favorably to the party
    appealing the instructional error alleged, in accordance with the
    customary rule of appellate review.’” (Ibid.) However, the
    instructional error is “‘prejudicial reversible error only if it is
    reasonably probable the appellant would have received a more
    favorable result in the absence of the error.’” (Id. at pp. 1087-
    1088.)
    c.     LAUSD’s evidence supporting the
    modified CACI No. 4510 instruction
    LAUSD cites several categories of evidence that it
    presented to the jury in support of its defense that Suffolk was
    responsible for the cracked foundations due to errors made by
    Suffolk or Daum. The evidence included the testimony of Mark
    Bogh, an expert concrete contractor. Bogh testified that one of
    Daum’s significant errors was its failure to properly or
    adequately vibrate the concrete during pours. Bogh opined that
    the contractor should systemically vibrate the concrete as soon as
    it is poured and referred to photographs and video footage to
    show that Daum was pumping concrete into place without
    performing sufficient or proper vibration. Bogh testified that the
    concrete work was done haphazardly, conducted “two times too
    fast,” and was not fully performed. Bogh did not believe there
    would have been any significant cracking at all if they had
    vibrated the concrete for a longer period. Bogh also testified that
    Daum understaffed the pour. Due to the rapid pace of the pour,
    and an insufficient number of crew members vibrating, the
    vibrators could not keep up with the pour.
    In addition to these problems, Bogh testified that Daum’s
    workers used undersized vibrators. Bogh testified, “I would have
    46
    had the bigger vibrators, [and] I would have four people doing
    vibration instead of two.” Bogh also explained that Daum should
    have revibrated after its initial pass.
    In addition to vibration, LAUSD provided evidence that
    Daum selected a concrete mix that did not comply with LAUSD’s
    contractual specifications. LAUSD’s concrete engineering and
    concrete mix expert, Radlinski, testified that LAUSD’s failure to
    comply with the contractual specifications caused or contributed
    to the cracking. Radlinski’s analysis showed that Daum’s
    concrete mix used more water than was necessary. Radlinski
    also testified that Daum’s selected concrete mix failed to use the
    required aggregate composition. Finally, Radlinksi testified that
    Daum should have utilized an admixture, which would “allow[]
    the contractor to reduce the bleeding.”
    Another supporting basis for the CACI instruction was
    LAUSD’s evidence that Suffolk and Daum ignored the
    specifications requiring the use of forms to encase the concrete
    pours. Bogh testified that, based on specification 02317, Daum
    should have used forms for the foundation pours 30 A form “keeps
    the concrete from leaking or touching the soil.” Bogh testified
    that the contractor in this case did not install forms for the
    foundation. In reading the contract and following the chain of
    events, Bogh testified: “So they went from supposed to put forms
    in, didn’t put forms in, had problems, and then at the end of the
    30    Section 3.4A of specification 02317 required the use of
    forms for the sides of slab foundations, stating, “[f]orm sides of
    footings, pads, grade beams, and slab foundations, unless
    otherwise indicated. Provide excavations of sufficient size to
    permit installation and removal of forms and other Work as
    required.”
    47
    day they put plastic in which replaces a form because a form
    keeps the concrete from leaking or touching the soil. So they
    kind of went full circle all the way back around.” Bogh testified
    that it was the contractor’s decision to pour the concrete against
    the earth instead of using a form in the first place.
    Based on this evidence, LAUSD argues that CACI No. 4510
    was crucial to provide the jury with explanation that Suffolk
    could only recover on its breach of implied warranty claim if
    Suffolk performed its concrete work properly. LAUSD argues
    that the trial court’s refusal to give the instruction deprived it of
    the opportunity to have the jury consider this basic theory of the
    case. (Soule, supra, 8 Cal.4th at pp. 573-574.) LAUSD argues
    that the trial court’s failure to give this instruction was
    prejudicial because it was critical to LAUSD’s defense.
    In contrast, LAUSD argues, Suffolk’s special instruction
    No. 1 was not supported by the evidence and did not accurately
    reflect the law. LAUSD argues that the word “difficulty” in
    Suffolk’s special instruction No. 1 was hopelessly vague, and the
    instruction improperly attempted to shift responsibility for
    deficient workmanship away from Suffolk by suggesting to the
    jury that any difficulty inherently arose from faulty plans.
    d.     Suffolk’s arguments
    Suffolk agrees that CACI No. 4510 involves breach of an
    implied covenant to perform work in a good and competent
    manner. Suffolk argues that, as modified, the instruction was
    overbroad and confusing with too many conjunctions. Further,
    Suffolk argues, the modified CACI No. 4510 instruction
    presupposed that the plans were correct and did not take into
    account a situation where after following the specifications, the
    concrete does not perform as expected because of a design error.
    To address these shortcomings, Suffolk offered its proposed
    48
    special instruction No. 1 to counterbalance CACI No. 4510.
    Suffolk proposed its special instruction No. 1 to be given in
    tandem with CACI No. 4510 so that the contractor could argue
    that the plans cannot be correct if the contractor followed the
    plans and the defect still occurred. Suffolk points out that the
    trial court agreed and properly decided to give either both or
    neither.
    Suffolk offers no law suggesting that the trial court’s offer
    that the parties agree to both instructions or neither instruction
    was proper. However, Suffolk argues that any error was
    harmless because the special verdict form already addressed the
    point LAUSD was trying to make. Question 1 in the special
    verdict form asked whether or not Suffolk had substantially
    performed its obligations under the contract to construct the
    footings.31 Suffolk further points to other jury instructions that
    instructed the jury on LAUSD’s defenses. Specifically,
    instruction No. 21 stated: “If you find Suffolk has proven the
    elements of its claims by a preponderance of the evidence, you
    must then consider LAUSD’s affirmative defense of mitigation.
    LAUSD must prove mitigation by a preponderance of the
    evidence. [¶] Suffolk is not entitled to recover for harm that
    LAUSD proves Suffolk could have avoided with reasonable efforts
    or expenditures. You should consider the reasonableness of
    Suffolk’s efforts in light of the circumstances facing it at the
    time.”
    31    Question No. 1 asked the jury, “Did Suffok . . . do all, or
    substantially all, of the significant things that its Contract with
    [LAUSD] required Suffolk to do to construct the elementary and
    middle school footings?” The jury checked “YES.”
    49
    Instruction No. 22 informed the jury that “[i]t was Suffolk’s
    responsibility to manage, schedule, coordinate, and supervise the
    work of its subcontractors and Suffolk was responsible for all acts
    and omissions of its subcontractors.”
    Suffolk also points to instruction No. 303, which indicates
    that in order to prove its breach of contract claim against
    LAUSD, Suffolk must first prove that it “did all, or substantially
    all, of the significant things that the contract required it to do.”
    Finally, Suffolk points to instruction No. 4500, which sets forth
    the essential factual elements of the breach of implied warranty
    of correctness of plans.
    e.    Analysis
    Suffolk does not disagree that LAUSD was entitled to a
    proper instruction regarding its defense that Suffolk’s errors and
    omissions led to Suffolk’s damages. However, Suffolk argues that
    the proposed statement of the law regarding breach of implied
    covenant to perform work in a competent manner was erroneous
    and needed to be “counterbalanced” with Suffolk’s own opposing
    instruction. Suffolk provides no legal authority that such a
    “counterbalancing” of a purportedly improper instruction is an
    acceptable way to address a flawed instruction. Instead, the
    appropriate strategy would be to propose edits to the instruction
    that would bring it within the realm of legality. (Ayala, supra,
    160 Cal.App.4th at p. 1358 [“‘“[P]arties have the ‘right to have the
    jury instructed as to the law applicable to all their theories of the
    case which were supported by the pleadings and the evidence,
    whether or not that evidence was considered persuasive by the
    trial court.’”’”].)
    However, we agree that any error was harmless under the
    circumstances. LAUSD’s affirmative defense that any harm to
    Suffolk should be mitigated by Suffolk’s own failures was
    50
    addressed in other instructions. First, in order to find in favor of
    Suffolk at all, the jury was first required to find that “Suffolk did
    all, or substantially all, of the significant things that the contract
    required it to do.” Further, instruction No. 21 instructed the jury
    that if it found that Suffolk proved its claims, the jury “must then
    consider LAUSD’s affirmative defense of mitigation.” The
    instruction further provided that Suffolk could not recover for
    harm “that LAUSD proves Suffolk could have avoided with
    reasonable efforts or expenditures.” While not stated in the
    traditional format for breach of implied covenant to perform work
    in a good and competent manner, these instructions sufficiently
    permitted the jury to find in LAUSD’s favor on its faulty
    workmanship defense.
    B.     Substantial evidence—phase 1
    LAUSD argues that the portion of the phase 1 judgment
    based on the phase 1 verdict is not supported by substantial
    evidence. Because we reverse the phase 1 verdict and remand for
    a new trial on the grounds of prejudicial instructional error, we
    do not need to address this contention of error. (See, e.g., People
    v. Jackson (2022) 
    75 Cal.App.5th 1
    , 27.)
    C.     Grant of Suffolk’s JNOV—phase 232
    1. Relevant law and standard of review
    JNOV motions are governed by Code of Civil Procedure
    section 629, which provides, in part, that a trial court “shall
    render judgment in favor of the aggrieved party notwithstanding
    the verdict whenever a motion for a directed verdict for the
    32     Although our reversal of the phase 1 verdict and remand
    for retrial will moot some of the issues raised in phase 2, the
    issue of LAUSD’s good faith retention of the $111,714 is separate
    from the liability issue. Therefore we address it.
    51
    aggrieved party should have been granted had a previous motion
    been made.” (Code Civ. Proc., § 629, subd. (a).) A JNOV acts as a
    demurrer to the evidence. A JNOV “can be sustained only when
    it can be said as a matter of law that no other reasonable
    conclusion is legally deducible from the evidence, and that any
    other holding would be so lacking in evidentiary support that the
    reviewing court would be compelled to reverse it, or the trial
    court would be compelled to set it aside as a matter of law . . . .”
    (Moore v. City & County of San Francisco (1970) 
    5 Cal.App.3d 728
    , 733.) In considering a JNOV motion, the trial court must
    view the evidence in the light most favorable to the party
    securing the verdict. (Sweatman v. Department of Veterans
    Affairs (2001) 
    25 Cal.4th 62
    , 68.) The JNOV motion may be
    granted only “if it appears from the evidence, viewed in the light
    most favorable to the party securing the verdict, that there is no
    substantial evidence in support.” (Ibid.)
    “The trial court’s discretion in granting a motion for
    judgment notwithstanding the verdict is severely limited.” (Teitel
    v. First Los Angeles Bank (1991) 
    231 Cal.App.3d 1593
    , 1603
    (Teitel).) “‘“The trial judge cannot reweigh the evidence [citation],
    or judge the credibility of witnesses. [Citation.] If the evidence is
    conflicting or if several reasonable inferences may be drawn, the
    motion for judgment notwithstanding the verdict should be
    denied.”’” (Ibid.)
    “‘“As in the trial court, the standard of review [on appeal] is
    whether any substantial evidence—contradicted or
    uncontradicted—supports the jury’s conclusion.”’” (Webb v.
    Special Electric Co., Inc. (2016) 
    63 Cal.4th 167
    , 192.)
    52
    2. Relevant background
    At trial Suffolk sought prompt payment penalties pursuant
    to Public Contract Code section 7107, subdivision (f).33 The
    phase 2 jury determined, among other things, that LAUSD had a
    good faith basis to withhold $111,714 in retention from Suffolk in
    December 2013.34 The $111,714 represented LAUSD’s
    33     Public Contract Code section 7107, subdivision (c) provides
    that “[i]n the event of a dispute between the public entity and the
    original contractor” the public entity may withhold from the
    contractor’s payment a certain percentage of the disputed
    amount. The “dispute exception excuses payment only when a
    good faith dispute exists over a statutory or contractual
    precondition to that payment, such as the adequacy of the
    construction work for which the payment is consideration.”
    (United Riggers & Erectors, Inc. v. Coast Iron & Steel Co. (2018) 
    4 Cal.5th 1082
    , 1085.) Public Contract Code section 7107,
    subdivision (f) provides: “In the event that retention payments
    are not made within the time periods required by this section, the
    public entity or original contractor withholding the unpaid
    amounts shall be subject to a charge of 2 percent per month on
    the improperly withheld amount, in lieu of any interest otherwise
    due. Additionally, in any action for the collection of funds
    wrongfully withheld, the prevailing party shall be entitled to
    attorney’s fees and costs.”
    34     Although the phase 1 jury found in favor of Suffolk as to
    liability for the cracking issue, the inquiry into whether LAUSD
    was justified in withholding the payment is a separate issue.
    (FEI Enterprises, Inc. v. Yoon (2011) 
    194 Cal.App.4th 790
    , 805
    (FEI) [“Whether the nonpaying party might ultimately be
    vindicated is not the issue. The critical question should be the
    legal tenability of the justification for nonpayment that was
    asserted.”].)
    53
    investigation costs to determine the cause of, and solution for, the
    concrete cracking.
    Suffolk challenged the phase 2 verdict with a JNOV
    motion, arguing that “the jury in Phase 2 had no basis upon
    which to find good faith that would be needed to support a verdict
    in [LAUSD’s] favor” on the issue of good faith. Suffolk took the
    position that Garawi’s testimony that LAUSD had a good faith
    basis to withhold the retention was a subjective belief that was
    not reasonable nor supported by objective evidence. Suffolk
    suggested that LAUSD “adopted the subjective opinion of a
    person not present or adequately knowledgeable” in withholding
    the retention. Suffolk also argued that the evidence did not
    support LAUSD’s position that it had a good faith basis for
    retention of funds. In short, Suffolk argued that “[b]y October
    2012, KPFF agreed ‘[i]t is likely that the adverse effect on the
    concrete is due to rapid loss of water from the fresh concrete into
    the soil’—not the result of the contractor means and methods.”
    The trial court accepted Suffolk’s arguments, finding “it is
    apparent that the jury erred in its conclusions regarding
    LAUSD’s objective good faith in retaining $111,714 for
    professional services it engaged to determine the cause of the
    cracking.” In granting the JNOV, the court noted that it was
    true that “at the time of the initial pour of concrete there was
    uncertainty as to the cause of the cracking.” While there
    continued to be uncertainty until the time of the fourth mock
    pour, the court stated that the addition of the rat slab and
    Visqueen in the fourth mock pour was a design change. The
    court stated: “Although this was not a design change requiring
    the approval of the State Architect, it did require new drawings
    from LAUSD’s engineers (KPFF) . . . . When those new plans
    were followed the cracking did not occur. Further KPFF itself
    54
    opined on October 18, 2012 that, ‘the foundation issues resulted
    from an unfavorable reaction between the concrete and the soils,
    which it characterized as a “rare occurrence” and uncommon
    condition.’” After the fourth mock pour and October 18, 2012
    memorandum, the court concluded, LAUSD could not have
    objectively been of the view that the problem arose from the
    contractor’s means and methods. The court stated that LAUSD
    could point to “no objective evidence after KPFF’s October 18,
    2012 report was issued that could support its continued belief
    that the issue lay with the contractor.” The trial court found that
    a JNOV on this issue was appropriate.
    3. LAUSD’s arguments and evidence
    LAUSD argues that the trial court’s granting of the JNOV
    ran afoul of the narrow review a trial court may conduct (citing
    Teitel, supra, 231 Cal.App.3d at p. 1603), adding that the
    evidence presented at trial fully supported the jury’s finding that
    it had a good faith basis in December 2013 to withhold the
    $111,714 in retention from Suffolk. The evidence LAUSD relies
    upon falls into several categories, including (1) improper methods
    of vibrating the concrete and failure to revibrate the concrete; (2)
    failure to use an admixture in the concrete mix; and (3) improper
    water content, which exceeded the maximum water content set
    by contract specifications. Further, LAUSD argues that it
    presented evidence refuting Suffolk’s position that the cracking
    resulted from a design error. We briefly discuss the evidence
    presented to the phase 2 jury below.
    The first category of evidence concerned LAUSD’s position
    that Suffolk did not properly vibrate the concrete. LAUSD points
    to evidence showing that it explained to the jury that the project
    specifications gave Suffolk broad responsibility to use Suffolk’s
    preferred means and methods, including selecting its preferred
    55
    means and methods for vibrating the freshly poured concrete.
    Duncan, a KPFF engineer, testified that KPFF raised improper
    vibration as a potential issue with respect to the cracking. As a
    result, Duncan testified, KPFF provided citations to ACI about
    concrete vibration. Holliday, Daum’s project manager, also
    testified that KPFF cited certain provisions of the ACI regarding
    vibration to him at a meeting, and he agreed to review them.
    Holliday also acknowledged that Daum did not make any
    changes to the concrete vibration or installation techniques after
    reviewing the pertinent provisions of the ACI regarding
    vibration. This evidence provided LAUSD with a good faith basis
    for believing that the subsidence cracking that occurred stemmed
    from poor contractor means and methods, particularly by
    inadequate vibration of the concrete.
    In an e-mail dated May 2, 2012, Hichborn, LAUSD’s chosen
    consultant, opined that “the subsidence cracking situation is
    mainly the result of the means and methods the concrete
    installer elected.” Hichborn also suggested, among other things,
    that “the informed use of accelerating admixtures” could alleviate
    the cracking. LAUSD also presented to the jury trial testimony
    showing that the amount of water in Daum’s selected concrete
    mix exceeded the amount of water permitted in LAUSD’s
    contract specifications. This evidence provided further reason for
    the jury to believe that LAUSD’s retention was withheld on the
    grounds of a good faith dispute as to the cause of the cracking.
    In addition to this affirmative evidence suggesting that
    Daum’s means and methods were at fault, LAUSD also provided
    evidence refuting Suffolk’s position that the foundation design
    itself was defective. Both KPFF and LAUSD’s geotechnical
    engineer, Neal Berliner, reviewed and verified that the designs
    were accurate and sound. Both Duncan and Orue testified that
    56
    the remedial measures ultimately adopted to help prevent
    cracking in later pours—namely the use of a mud slab and
    Visqueen, were not design changes. They also confirmed that
    KPFF did not believe there was anything unusual about the soils
    that would have required the use of a mud slab or Visqueen.
    Other evidence suggested that there was no clear correlation
    between the use of a mud slab and nondefective concrete pours.
    In some areas where a mud slab had been placed for other
    reasons, the concrete still exhibited cracking. This evidence
    highlighted for the jury why LAUSD might have a good faith
    belief that contractor means and methods, rather than design
    flaws, led to the problems.
    In addition to the evidence described above, LAUSD
    explained to the jury its decisionmaking process involved with
    the retention of the disputed funds. Garawi, LAUSD’s OAR for
    the project, provided much of the testimony on this subject.
    Garawi had direct involvement with the investigation of the
    concrete cracking problem and provided input for LAUSD’s
    decision to withhold the $111,714 in investigation expenditures.
    Garawi testified that he relied on the engineers’ verification of
    the propriety of the original design. Both the soil engineer and
    the structural engineer told Garawi, “This is a problem [that] has
    nothing to do with the design.” Garawi also testified to some of
    his own observations. He observed that there was much more
    severe cracking on the day when the concrete workers had a 14-
    hour day. “In this area, we had much more severe cracking
    [than] in the [other] area, so that was a 14-hour day. The
    contractor[s] were experiencing fatigue. Their level of quality
    control was going down. And that area experienced much more
    cracking than the earlier.”
    57
    However, the most important aspect of Garawi’s analysis
    was improper vibration, specifically “the lack of vibration.”
    Garawi’s opinion had not changed over time. He testified that “I,
    to this date, confirm and actually became much more confident in
    the fact that the vibration was the main cause of the cracking to
    the concrete.” LAUSD’s assessment that the cracking was caused
    by contractor means and methods was confirmed by the mock
    pour process, because critical aspects of contractor means and
    methods, such as vibration, were not tested and thus not
    eliminated as a cause of the cracking.
    The jury was shown Garawi’s written summary of his
    thoughts as to what caused the problem. Garawi testified that
    the document was his “best effort at the time to tell [his] team at
    [LAUSD] what [his] issues and concerns and thoughts were as to
    what had caused the problem.” Garawi mentioned improper
    vibration. He opined that “the lack of contractor’s quality control
    and worker fatigue are the most probable causes of the
    inconsistent vibration during the pour that caused the
    cracking . . . .” Garawi testified that he had not changed his
    opinion since the time he wrote the document in October 2012.
    This was Garawi’s “best judgment on the issue and how it
    happened and what it is and what caused it.”
    David Tatevossian, LAUSD’s deputy director of facilities
    project execution and head of construction projects, also testified
    about LAUSD’s response to the concrete cracking. He confirmed
    that once the concrete cracking was discovered, LAUSD
    instructed Geocon and KPFF to review their work and verify that
    the underlying design was correct. Neither reported that a
    design flaw led to the concrete cracking. LAUSD relied on
    Geocon’s and KPFF’s assessments when making payment
    decisions. Tatevossian also confirmed that Suffolk had the
    58
    discretion to use moisture barriers as part of its means and
    methods to construct the foundations. He further confirmed that
    the mud slab and Visqueen were not structural design changes.
    The above evidence was presented to the phase 2 jury in
    order to show LAUSD’s good faith belief that it was justified in
    withholding the retention funds. LAUSD argues that the trial
    court was required to accept this evidence as true. (Jones &
    Matson v. Hall (2007) 
    155 Cal.App.4th 1596
    , 1607.) It had no
    authority to weigh evidence or judge credibility. (Hansen v.
    Sunnyside Products, Inc. (1997) 
    55 Cal.App.4th 1497
    , 1510.)
    However, instead of following these directives, LAUSD argues
    the trial court improperly inserted its own view of the evidence
    over the jury’s, drew adverse inferences and reweighed the
    evidence. LAUSD further argues that the trial court improperly
    interpreted a letter prepared by KPFF in October 2012 which
    stated that “the foundation issues encountered at this site
    extended from an unfavorable reaction between the concrete and
    the soils.” The court relied heavily on this letter in concluding
    that “[t]he plain evidence was that the soil conditions were
    unusual” and thus that LAUSD “could not, in good faith, have
    concluded that the blame [for the concrete cracking] was thus
    shifted to Suffolk and Daum.” LAUSD argues that the trial court
    misinterpreted the document and erroneously relied on it given
    other contradictory evidence in the record,35 and it also wrongly
    35    LAUSD argues that undisputed evidence showed that the
    soil was not, in fact, unusual. Duncan testified as follows:
    “Q Was there anything unusual about the soils in the soils
    report that you saw?
    “A No.
    59
    interpreted evidence, such as the mock pours and Hichborn’s
    letter, to preclude contractor means and methods as a cause of
    the cracking. LAUSD argues that the trial court thus substituted
    its own conclusions based on its interpretations of evidence.
    4. Suffolk’s arguments
    Suffolk’s position is that Garawi’s decision was subjective,
    but was not objectively reasonable. Suffolk cites FEI, supra, 194
    Cal.App.4th at page 806 for the proposition that “the proper
    standard to be applied to the question of whether there was a
    ‘good faith dispute’ is . . . objective, not subjective.” The FEI court
    clarified, “Certainly, a party who has no reasonable, objective
    justification for withholding payment under a construction
    contract, but ‘believes,’ by reason of delusion, ignorance,
    negligence of legal counsel or otherwise, that the money is not
    owed should not be able to avoid penalty interest on such
    ground.” (Ibid.)
    Moreover, Suffolk argues, the good faith must exist at the
    time of the withholding. (Citing Fassberg Construction Co. v.
    Housing Authority of City of Los Angeles (2007) 
    152 Cal.App.4th 720
    , 733 [“the Housing Authority was entitled to withhold the
    retention proceeds more than 60 days after the date of completion
    because there was a dispute between the parties at that time,
    pursuant to Public Contract Code section 7107, subdivision (c)”].)
    “Q Okay. Even in comparison to the other school projects
    you’ve worked on?
    “A There was—no, nothing unusual.
    “Q And did anybody at KPFF, including you, come to the
    conclusion that anything about the actual soil differed from what
    was in the soils report?
    “A No.”
    60
    Suffolk argues that nearly all the evidence cited by LAUSD
    predates mock 4. Suffolk asserts, without citation to the record,
    that mock 4 “ruled out contractor means and methods.” Suffolk
    sums up its position as follows: “The relevant inquiry is the
    objective reasonableness of Garawi’s personal opinion that
    contractor means and methods were the cause of the cracking,
    even after the results of the four mock pours and evidence from
    LAUSD’s own consultants and personnel during the Project had
    ruled out that possibility leading to a change in the design.”
    With this statement, Suffolk makes it clear that its
    interpretation of the results of mock 4 and the words of LAUSD’s
    consultants differs from LAUSD’s interpretation of the same
    evidence. Suffolk’s argument thus relies upon its own factual
    spin on the evidence. The dispute between LAUSD and Suffolk is
    ultimately one that comes down to the interpretation of the facts
    presented to the jury.
    5. Analysis
    Both LAUSD’s opening brief and Suffolk’s respondent’s
    brief on this issue contain pages and pages of analysis of the
    evidence, each party’s spin on that evidence, and arguments as to
    why the other party’s interpretation of the evidence is incorrect.
    The question of LAUSD’s good faith in retaining the funds was
    ultimately one of intense observation of, consideration of, and
    weighing of a multitude of facts.
    We decline to reweigh or reanalyze these facts. Instead, we
    note that there was ample evidence to support the jury’s verdict.
    Despite Suffolk ultimately winning the issue of liability for the
    concrete cracking, the jury was still well within its power to
    conclude also that LAUSD’s belief that the contractor was
    responsible was reasonable. We note that LAUSD maintains
    that belief even now, as it has launched a substantial evidence
    61
    challenge to the phase 1 verdict on liability. We conclude that
    the trial court overstepped its role in granting Suffolk’s JNOV
    motion on the issue of good faith.
    As set forth above, a JNOV “can be sustained only when it
    can be said as a matter of law that no other reasonable conclusion
    is legally deducible from the evidence.” (Moore v. City & County
    of San Francisco, supra, 5 Cal.App.3d at p. 733.) That is not the
    case here, where LAUSD has set forth at least 15 pages of
    evidence presented to the phase 2 jury in support of its position
    that the withholding of funds was done in good faith. Rather
    than accept the jury’s analysis of the evidence, the trial court
    undertook its own analysis of the evidence, setting forth in detail
    its conclusions as to the outcomes of the four mock pours. While
    acknowledging LAUSD’s position that the addition of the rat slab
    and Visqueen was not a design change, the court disagreed with
    this position.36 The court further concluded, with no apparent
    evidence, that the soil conditions were “unusual,” stating: “Nor
    could [LAUSD] and its senior team justify its decision by reason
    of the fact that its engineers and designers did not admit to a
    design flaw. The plain evidence was that the soil conditions were
    unusual. While LAUSD’s engineers and designers may not have
    36     It is Suffolk’s position that the phase 1 verdict confirmed
    that the addition of rat slab and Visqueen was a design change,
    stating, “LAUSD re-litigates the Phase [1] jury’s verdict
    contending the addition of the Visqueen layer was not a ‘design
    change.’” The issue in phase 2 was not whether LAUSD’s design
    plans and specifications were correct or not, but whether LAUSD
    had a good faith belief that they were correct at the time they
    withheld payment. Thus, LAUSD was permitted to present to
    the phase 2 jury evidence supporting its belief that the addition
    of rat slab and Visqueen were not design changes.
    62
    been ‘at fault,’ LAUSD could not, in good faith, have concluded
    that the blame was thus shifted to Suffolk and Daum.”
    In carrying out its own lengthy analysis of the evidence, the
    court erred. The court was not permitted to reweigh the evidence
    or judge the credibility of witnesses. (Teitel, supra, 231
    Cal.App.3d at p. 1603.) It did both of these things in granting
    Suffolk’s JNOV. In light of the plethora of conflicting evidence on
    the issue of LAUSD’s good faith, the motion for JNOV should
    have been denied. (Ibid.)
    Substantial evidence supported the jury’s conclusion as to
    good faith. (Webb v. Special Electric Co., Inc., supra, 63 Cal.4th at
    p. 192.) The trial court’s grant of Suffolk’s JNOV on good faith is
    reversed, and the court is directed to reinstate the jury’s verdict
    on this issue.
    D.    Exclusion of LAUSD’s expert on good faith—
    phase 2
    LAUSD argues that the trial court abused its discretion in
    excluding its expert testimony on objective good faith in phase 2.
    LAUSD sought to present testimony from its concrete expert,
    Bogh, to support its position that there was a good faith dispute
    over the retention money. The trial court found the testimony to
    be inadmissible because it was unknown to LAUSD as of the date
    of the withholding, which was December 2013. Bogh was
    retained in March 2016. A trial court’s exclusion of evidence is
    normally reviewed for abuse of discretion. (Tudor Ranches, Inc.
    v. State Comp. Ins. Fund (1998) 
    65 Cal.App.4th 1422
    , 1431.)
    Because we have reversed the trial court’s grant of JNOV
    on the issue of good faith, and reinstated the jury verdict in favor
    of LAUSD on this issue, we find that the issue is moot, and we
    need not address it.
    63
    E.     Instructional error—unlicensed contractor—
    phase 2
    The final issue in LAUSD’s direct appeal is the trial court’s
    denial of LAUSD’s proposed jury instructions explaining the
    statutory bar to an unlicensed contractor bringing an action. The
    first instruction explained the statutory bar contained in
    Business and Professions Code former section 7031 (former
    section 7031). The second instruction explained the responsible
    managing employee (RME) requirements required of Suffolk
    under Business and Professions Code sections 7068 and 7068.1
    (RME instruction).
    The trial court refused to give LAUSD’s proposed
    instructions, finding that the RME instruction “overstates the
    law and provides the jury with unnecessary information.”37
    37    LAUSD’s proposed instruction read:
    “A corporation such as Suffolk qualifies for a contractor’s
    license by the use of a Responsible Managing Officer (‘RMO’) or a
    Responsible Managing Employee (‘RME’). A RMO or RME is a
    bona fide officer or employee of Suffolk who is actively engaged in
    the operation of the contracting business. To meet the definition
    of a ‘bona fide employee,’ an individual must be permanently
    employed by Suffolk and actively engaged in the [sic] Suffolk’s
    contracting business for at least 32 hours per week or 80 percent
    of the total hours of the business per week, whichever is less.
    “Suffolk’s RME or RMO also must have actually applied his
    knowledge and skill in managing the project involved in this case
    and must have been ‘responsible for exercising direct supervision
    and control’ over the [sic] Suffolk’s construction operations. The
    term ‘direct supervision and control’ can encompass the following
    activities: supervising construction, managing construction
    activities by making technical and administrative decisions,
    64
    Specifically, the trial court found that section 7068.1 does not
    “stand for the proposition that employing an RME who does not
    directly oversee a particular project results in an automatic
    license suspension.” However, the trial court offered to give a
    modified version of the instruction, omitting the language
    informing the jury that “[i]f you find that Suffolk’s RME or RMO
    did not provide direct supervision or control over Suffolk’s work
    on the Project, then you must find that Suffolk was not a properly
    licensed contractor.”
    LAUSD asserts that the trial court’s refusal to give the
    proposed RME instruction, as written, effectively precluded
    LAUSD from presenting any evidence or argument on this
    issue.38 LAUSD cites case law supporting the proposition that
    checking jobs for proper workmanship, and directly supervising
    on construction job sites.
    “If you find that Suffolk’s RME or RMO did not provide
    direct supervision or control over Suffolk’s work on the Project,
    then you must find that Suffolk was not a properly licensed
    contractor.”
    38    Greg Hescock was Suffolk’s designated RME for the
    relevant period of construction. As factual support for its defense
    that Suffolk was not a properly licensed contractor due to an
    inadequate RME, LAUSD provided the following excerpt from the
    deposition of Mumper, Suffolk’s project manager:
    “Q Okay. So was Mr. Hescock involved in the supervision or
    management of this project?
    “A No.
    “Q And as a—as the senior project manager, you were the one
    that was on the ground interacting with Suffolk and other
    personnel involved in the project?
    65
    failure to instruct the jury to make a finding on a critical issue
    constitutes prejudicial error. (Citing Moore v. Wal-Mart Stores,
    Inc. (2003) 
    111 Cal.App.4th 472
    , 479-480; Sutter Health v.
    UNITE HERE (2010) 
    186 Cal.App.4th 1193
    , 1211.)
    1. Applicable law
    A corporation qualifies for a contractor’s license through an
    RME. (Bus. & Prof. Code, § 7068, subd. (b).) An RME is defined
    as “an individual who is a bona fide employee of the applicant
    and is actively engaged in the classification of work for which
    that responsible managing employee is the qualifying person on
    behalf of the applicant.” (Bus. & Prof. Code, § 7068, subd.
    (c)(1).)39 The statute in effect at the time of the project provided
    that the RME “shall be responsible for exercising that direct
    supervision and control of his or her employer’s or principal’s
    construction operations as is necessary to secure full compliance
    with this chapter and the rules and regulations of the board
    relating to the construction operations.”40 (Former § 7068.1.)
    “‘[D]irect supervision and control’ includes any one or any
    combination of the following activities: supervising construction,
    managing construction activities by making technical and
    “A Correct.”
    At the hearing on the issue, LAUSD also pointed out that
    Hescock was not present in California during the construction at
    issue, and instead was working in Massachusetts.
    39    “‘Classification’ is a term of art which refers to various
    specialty licenses.” (Buzgheia v. Leasco Sierra Grove (1997) 
    60 Cal.App.4th 374
    , 384 (Buzgheia).)
    40    The phrases “as necessary” and “relating to the
    construction operations,” and the word “full” have been deleted
    from the statute’s current version. (§ 7068.1)
    66
    administrative decisions, checking jobs for proper workmanship,
    or direct supervision on construction job sites.” (Cal. Code Regs.,
    tit. 16, former § 823, subd. (b).)41 “Personal presence is not
    necessary.” (Buzgheia, supra, 60 Cal.App.4th at p. 381.)
    Business and Professions Code section 7068.2 provides in
    part that “upon failure to replace the RME or notify the registrar
    of disassociation of the RME within 90 days, ‘the license shall be
    automatically suspended or the classification removed.’”
    (Buzgheia, supra, 60 Cal.App.4th at p. 381.)
    2. No trial court error in declining LAUSD’s proposed
    instruction as written
    The last sentence of LAUSD’s proposed instruction
    provided, “If you find that Suffolk’s RME or RMO did not provide
    direct supervision or control over Suffolk’s work on the Project,
    then you must find that Suffolk was not a properly licensed
    contractor.” The trial court did not err in concluding that this
    sentence overstates the law.
    The relevant statutes and regulation, taken together, do
    not require that an RME exercise direct supervision and control
    over any given project. Instead, the RME was “responsible for
    exercising that direct supervision and control of his or her
    employer’s or principal’s construction operations as is necessary to
    secure full compliance with this chapter and the rules and
    regulations of the board relating to the construction operations.”
    (Former § 7068.1, italics added.) The requirement that the RME
    provide direct supervision and control does not mandate such
    direct supervision control over every project, but over the
    41    California Code of Regulations, title 16, section 823 was
    repealed June 2, 2022, pursuant to section 100, title 1 of the
    California Code of Regulations.
    67
    employer’s “construction operations” as a whole, to the extent
    necessary to ensure compliance with the rules and regulations of
    the board. Thus, the RME’s supervision and control is not tied to
    any particular job site. As the Buzgheia court noted, an RME’s
    “[p]ersonal presence” on a job site “is not necessary.” (Buzgheia,
    supra, 
    60 Cal.App.4th 374
    , 381.)
    LAUSD’s proposed instruction informed the jury that the
    RME was required to “provide direct supervision or control over
    Suffolk’s work on the Project.” (Italics added.) As set forth above,
    an RME is required to exercise supervision and control over his
    or her employer’s construction operations—not any one particular
    job. Contrary to LAUSD’s instruction, the RME’s focus was
    required on the company’s construction operations as a whole,
    and could have been satisfied through making technical and
    administrative decisions, or checking jobs for proper
    workmanship. (Cal. Code Regs., tit. 16, former § 823, subd. (b).)
    LAUSD’s suggestion that the RME was required to provide direct
    supervision or control over this particular job overstated the law
    as written.
    LAUSD’s instruction told the jury that if it found that
    Suffolk’s RME did not provide direct supervision or control over
    this particular project, the jury “must” find that Suffolk was not a
    properly licensed contractor. The parties disagree over whether a
    violation of former section 7068.1, subdivision (a), results in
    automatic suspension of the contractor’s license. No such
    language exists in the statute itself. As Suffolk points out, case
    law suggests that automatic suspension should not be imposed in
    the absence of a statute expressly providing for that penalty.
    (Citing Ball v. Steadfast-BLK (2011) 
    196 Cal.App.4th 694
    ; MW
    Erectors, Inc. v. Niederhauser Ornamental & Metal Works Co.
    (2005) 
    36 Cal.4th 412
    , 426.)
    68
    Former section 7031, subdivision (a), provided that no
    contractor “may bring or maintain any action, or recover in law or
    equity in any action, in any court of this state . . . without
    alleging that he or she was a duly licensed contractor at all times
    during the performance of that act or contract regardless of the
    merits of the cause of action brought by the person . . . .” Thus,
    former section 7031 does not provide for automatic suspension.
    Instead, it essentially prohibits a contractor from bringing a
    lawsuit unless that contractor is duly licensed. However, even
    where a contractor alleges licensure, a party may “challenge the
    bona fides of a contractor’s RME in a civil suit.” (Buzgheia,
    supra, 60 Cal.App.4th at p. 386.) This is what LAUSD proposed
    to do in this matter. In such a case, the party challenging the
    RME takes the position that the RME was a “sham.” “If the RME
    was a sham, the contractor is barred from recovery because he or
    she is, in effect, acting outside the license, just like a specialty
    contractor who labors at a task for which he or she has no
    expertise nor license.” (Ibid.) Thus, the language of LAUSD’s
    proposed instruction, which directed the jury to find that Suffolk
    was not a properly licensed contractor, was not technically
    correct. Instead, the presence of a “sham” RME would result in a
    finding that Suffolk was acting outside of its license.
    The results to Suffolk—inability to collect on a judgment in
    court—may be the same. However, Suffolk could have cured this
    technical misstatement by keeping the language of its instruction
    more in line with the statute. In its reply brief on this issue,
    LAUSD insists it “never argued use of a sham RME resulted in
    automatic suspension of Suffolk’s license. Instead, LAUSD
    insists its “actual position is that when a contractor’s RME is a
    sham (i.e., the RME fails to perform statutorily required
    functions), then the contractor is ‘barred from recovery because
    69
    [it] is, in effect, acting outside the license.’” Thus LAUSD
    concedes there is a difference between a company that is not
    properly licensed and one that is acting outside of its licensure.
    However, the language LAUSD used in its instruction was that
    the jury was required to find Suffolk was “not a properly licensed
    contractor.” The language was inaccurate.
    LAUSD’s proposed instruction on the licensing issue
    misstated the law and improperly informed the jury that an RME
    was required to directly supervise that particular job. Thus, we
    find no error with the trial court’s overall analysis that the
    instruction overstated the law.
    3. LAUSD was not prejudiced by the trial court’s
    action
    LAUSD complains that the trial court’s proposal that it
    give the instruction without the last line of the proposed jury
    instruction “effectively precluded” LAUSD “from presenting any
    evidence or argument on this issue.” We find that LAUSD
    suffered no such prejudice. The court was willing to give an
    instruction on this issue that followed the language of the
    statute. LAUSD was therefore not precluded from presenting
    evidence or argument on this issue. Thus, even if the trial court
    had acted in error, LAUSD was not prejudiced as the trial court
    offered to give an instruction in keeping with the law.
    II.     Suffolk’s cross-appeal
    Suffolk raises five issues in its cross-appeal against
    LAUSD. It raises three issues concerning phase 2 of trial; it
    challenges the trial court’s decision by cross-motions for summary
    judgment in phase 3; and it challenges the trial court’s decision to
    reduce the amount of attorney fees awarded to Suffolk.
    As to phase 2, Suffolk first argues that the damages the
    jury awarded for TIA 5 were not supported by the record and
    70
    were inadequate as a matter of law. Suffolk raises two other
    issues challenging the jury’s findings in phase 2. First, Suffolk
    argues there was insufficient evidence to support the jury’s
    verdict on TIA 2, which involved over-excavation of footings.
    Suffolk takes the position that the over-excavation on certain
    foundations were extra work requiring a change in LAUSD’s
    plans and specifications. The jury found that LAUSD did not
    breach the warranty of correctness of plans and specifications as
    to TIA 2.
    Next, Suffolk argues that the phase 2 verdict is
    inconsistent as to TIA’s 3 and 4. Both TIA 3 and TIA 4 related to
    plumbing issues. TIA 3 addressed delays in December 2011, and
    TIA 4 addressed delays in January 2012. The jury found that
    LAUSD breached the warranty of correctness of plans and
    specifications for TIA 3, but not for TIA 4. Suffolk argues that
    the jury was required to find that the plans and specifications for
    TIA’s 3 and 4 were either both correct or both incorrect and that
    the jury’s findings were inconsistent and against the law,
    requiring a new trial.
    Phase 3 of trial was decided by cross-motions for summary
    adjudication on the question of whether LAUSD was liable to
    Suffolk for Suffolk’s obligation to pay attorney fees to Daum
    under a theory of contractual indemnity. The trial court granted
    LAUSD’s motion for summary adjudication on this issue on the
    ground that LAUSD was not a party to the subcontract between
    Suffolk and Daum. Suffolk challenges this determination,
    arguing that the attorney fees were recoverable from LAUSD as a
    form of damages.
    Finally, Suffolk challenges the trial court’s final award of
    attorney fees to Suffolk, arguing that the trial court erred in
    reducing its requested fees. Given that there will be a retrial of
    71
    phase 1, the issue of Suffolk’s entitlement to attorney fees will
    also need to be reconsidered on remand.
    We first address Suffolk’s challenges to phase 2 of trial and
    conclude that the damages for TIA 5 will be subject to reversal
    and retrial along with the liability issue from phase 1. As to the
    jury verdict on TIA’s 2, 3, and 4, they are affirmed, as set forth in
    detail below.
    As to Suffolk’s challenge to the outcome of phase 3, we
    conclude that this issue is best addressed following retrial below.
    A.     Damages awarded for TIA 5—phase 2
    In phase 2, the jury was charged with assessing Suffolk’s
    damages resulting from the concrete cracking problem. Suffolk
    now challenges the phase 2 jury’s award, arguing it was
    insufficient.
    The jury in phase 1 found LAUSD liable for the concrete
    cracking having received an erroneous instruction and related
    argument based on section 1104. The phase 2 jury was tasked
    with awarding damages on the phase 1 liability. As such, the
    phase 2 jury was required to accept the phase 1 jury’s finding
    that LAUSD was liable for the concrete cracking. As the phase 1
    liability determination will be remanded for retrial, the phase 2
    liability issue will also need to be retried. Thus, we decline to
    address this issue.
    B.     Sufficiency of the evidence regarding TIA 2—
    phase 2
    TIA 2 concerned time extensions and costs for the delay
    related to over-excavation of the footings along the project
    property line. Since LAUSD did not approve Suffolk’s request for
    additional time and costs for TIA 2, the jury was instructed to
    determine whether LAUSD breached the implied warranty of
    correctness of plans and specifications for the designs implicated
    72
    in TIA 2. The jury found that LAUSD did not breach the implied
    warranty as to the designs implicated in TIA 2. Suffolk
    challenges this finding on the ground that no reasonable jury
    could have found that no breach occurred based on the record as
    a whole.
    We review this issue for substantial evidence. Under this
    standard, we must “‘accept as true the evidence supporting the
    verdict, disregard conflicting evidence, and indulge every
    legitimate inference to support the verdict.’” (Cochrum v. Costa
    Victoria Healthcare, LLC (2018) 
    25 Cal.App.5th 1034
    , 1044.)
    Thus, our only role is to determine if substantial evidence exists
    in the record to support the verdict in favor of the prevailing
    party. (Schmidt v. Superior Court (2020) 
    44 Cal.App.5th 570
    , 582
    (Schmidt).)
    1. Evidence and arguments
    In October 2011, Suffolk requested clarification on whether
    foundations along an adjacent property line required over-
    excavation. E-mails between the parties show that Suffolk asked
    LAUSD to “identify foundations that must be deepened” and
    provide “some clarification on which footings will need to be
    deepened.” It was requested that KPFF “mark up the foundation
    plan to identify foundations that must be deepened.” LAUSD
    complied and provided a “sketch on the subject matter.” The
    revised drawings were provided to Suffolk in a supplemental
    response to RFC 62. The response provided, in part: “[i]n
    accordance with the project geotechnical report, where the
    recommended lateral overexcavation of 5-feet beyond footings
    could not be performed, . . . the footing excavation should be
    deepened to the competent alluvium found at or below a depth of
    5 feet . . . .”
    73
    Suffolk also points to its CDA No. 12, initiated in
    August 2012. The CDA requested contingency funds for “labor,
    material, and equipment to over-excavate and backfill with
    concrete approximately 2’ deep at building footings.” The request
    specified, “NO CHANGE TO DSA APPROVED DOCUMENTS.”
    Mumper testified that the information in RFC 62 and revised
    S201 drawing, which was provided to clarify the over-excavation
    work, was necessary to proceed with and finish the over-
    excavation work.
    Suffolk admits that the geotechnical investigation report,
    prepared by Geocon, already informed Suffolk of the potential for
    over-excavation “at or below a depth of five feet.” Suffolk also
    acknowledges other evidence in the record suggesting that the
    over-excavation was part of the original plan and did not require
    a design change. For example, Garawi testified that the revised
    S201 drawing was “voluntary information” he provided to
    Suffolk, and that Suffolk would have been able to excavate
    without the revised drawings. Further, as LAUSD points out,
    there was pushback from Garawi within the TIA 2 narrative.
    Garawi responded to TIA 2 in September 2012 with photographic
    evidence, noting that the contractor had proceeded with the over-
    excavation “without formal direction.” (Boldface and italics
    omitted.) At Suffolk’s suggestion that they only proceeded in
    certain areas, Garawi responded with additional photographs,
    stating, “take a look at the attached photos . . . and let me know if
    you will be dropping this argument . . . .” Garawi testified at trial
    that Suffolk was over-excavating the property lines, in
    contradiction to their position that they could not do so without
    direction from LAUSD.
    Despite the contradictory evidence in the record, Suffolk
    argues that “a reasonable jury could only have found the plans
    74
    for the footing excavation addressed in TIA 2 were incorrect and
    had to be corrected via CDA 12.” Suffolk draws a distinction
    between plans that contemplated over-excavation might be
    necessary, and plans that allow a contractor to accurately
    prepare its bid. Suffolk argues plans that allow a contractor to
    further excavate “as necessary” do not satisfy a public owner’s
    obligation to provide correct plans and specifications. Suffolk
    contends CDA 12 provided undisputed evidence that a change
    was required and was made.42
    2. Substantial evidence supports the jury verdict
    Ample evidence in the record supported the jury’s
    determination that LAUSD did not breach the implied warranty
    of correctness of plans and specifications as to the over-
    excavation issue in TIA 2. As set forth above, Garawi testified
    that Suffolk was falsely claiming that it could not proceed with
    the over-excavation work absent revised drawings. He testified
    that LAUSD provided the revised drawings voluntarily and that
    they were not necessary design changes. Further, documentary
    evidence showed that the changes did not require any deviation
    from the original design documentation. The jury was entitled to
    consider, and give weight to, LAUSD’s evidence suggesting that
    no design change was necessary for Suffolk to implement the
    over-excavation.
    42    LAUSD argues that CDA 12 did not refer to design
    modifications and in fact specified “NO CHANGE TO DSA
    APPROVED DOCUMENTS.” Thus, the jury was free to
    interpret CDA 12 as not requiring design modifications. Even if
    the jury could not consider CDA 12 as not requiring design
    modifications, the jury was free to believe Garawi’s testimony
    suggesting that the revised drawings were not necessary to
    Suffolk’s over-excavation work.
    75
    Suffolk asks that we interpret the evidence differently from
    the jury to support its version of the facts. However, our role is
    “not to determine whether substantial evidence might support
    the losing party’s version of events.” (Schmidt, supra, 44
    Cal.App.5th at p. 582.) Because substantial evidence supported
    the jury’s determination that LAUSD did not breach the implied
    warranty of correctness of plans and specifications on TIA 2, we
    affirm the jury verdict on TIA 2.
    C.     Consistency of verdicts as to TIA’s 3 and 4—
    phase 2
    Suffolk argues that TIA’s 3 and 4 relate to the same
    underlying issue—alleged conflicts between the underground
    plumbing and concrete footings. Both TIA’s sought respective
    time extensions necessitated by Suffolk’s need to wait for revised
    drawings so the underground work could be completed and
    concrete poured. Suffolk states that the parties unnecessarily
    divided the delays arising from the conflicts in the plumbing
    drawings into two TIA’s covering different time periods. TIA 3
    addressed delays in December 2011 and TIA 4 addressed delays
    in January 2012. Suffolk contends that the jury made
    inconsistent factual determinations in finding that the claim for
    TIA 3 arose from incorrect plans and specifications while the
    claim for TIA 4 did not.43 Suffolk raised this issue in its motion
    43    The jury verdict form was set up as follows:
    “Special Interrogatory No. 1(a) Regarding Suffolk’s Claim
    for Implied Warranty of Correctness of Plans and Specifications
    Against LAUSD: Did LAUSD breach the implied warranty of
    correctness of plans and specifications in the Contract by
    76
    for new trial following phase 2. The trial court denied the
    motion, stating: “the jury could have found that the plans
    underlying RFC 266 and 297 [in TIA 4] were materially correct
    and still found the plans underlying the RFC in TIA 3 to have
    been incorrect, even though they all related generally to the same
    plans and specifications regarding plumbing and CMU joints.”
    1. Standard of review
    “‘A special verdict is inconsistent if there is no possibility of
    reconciling its findings with each other.’” (Markow v. Rosner
    (2016) 
    3 Cal.App.5th 1027
    , 1048 (Markow).) This court generally
    reviews a special verdict de novo to determine whether its
    findings are inconsistent. (Zagami, Inc. v. James A. Crone, Inc.
    (2008) 
    160 Cal.App.4th 1083
    , 1092.) “A court reviewing a special
    verdict does not infer findings in favor of the prevailing party
    [citation], and there is no presumption in favor of upholding a
    special verdict when the inconsistency is between two questions
    in a special verdict.” (Ibid.) The appellate court is not permitted
    to choose between inconsistent answers, but “[i]f a verdict is not
    ‘hopelessly ambiguous,’ the court may ‘“interpret the verdict from
    its language considered in connection with the pleadings,
    evidence and instructions.”’” (Ibid.)
    Where inconsistency is alleged, reversal is warranted
    “[w]here the findings are so inconsistent, ambiguous, and
    providing Project plans and/or specifications for the designs
    implicated in TIAs 2, 3, or 4 to Suffolk that were not correct?
    “A. TIA 2: __YES or __NO
    “B. TIA 3: __YES or __NO
    “C. TIA 4: __YES or __NO”
    The jury checked “YES” for TIA 3 and “NO” for TIA 4.
    77
    uncertain that they are incapable of being reconciled . . . .”
    (Renfer v. Skaggs (1950) 
    96 Cal.App.2d 380
    , 383.)
    2. Relevant factual background and arguments
    Suffolk acknowledges that the information regarding the
    plumbing delays was split into two TIA’s and the claims were
    presented to the jury in that manner. However, Suffolk asserts
    that the evidence showed that the errors and design conflicts in
    TIA’s 3 and 4 arose from the same set of underground plumbing
    drawings. As support for this argument, Suffolk points to
    evidence that LAUSD approved one change order (CAP 106) for
    the direct cost of performing the changes to the underground
    plumbing conflicts spanning from December 2011 through
    January 2012. Of the multiple RFC’s addressed in CAP 106 were
    RFC’s 192, 193, and 195 (covered in TIA 3) and RFC 297 (covered
    in TIA 4). Simply put, Suffolk argues, the RFC’s that are split
    between TIA 3 and TIA 4 are included in a single change order
    that LAUSD paid for. CAP 106 also included many of the
    plumbing changes that were formalized in bulletin 2. Bulletin 2
    was a collection of design revisions addressing several separate
    parts of the overall design and project, including many of the
    plumbing changes.44 Bulletin 2 was dated December 30, 2011.
    Further responses to RFC’s 172 and 297 were provided on
    January 17 and 26, 2012. Suffolk argues that because the RFC’s
    listed in the TIA’s overlap with those included in CAP 106, the
    verdict must be inconsistent.
    Suffolk also points out that TIA 4 focused primarily on the
    changes to the plumbing design made in response to RFC’s 172
    and 297. RFC 172 is addressed in both TIA 3 and TIA 4. RFC
    44    We note that bulletin 2 is a three-page chart containing
    reference to over 35 drawings.
    78
    297 was also addressed in both TIA’s because it superseded RFC
    193, which was covered in the TIA 3 narrative. Bulletin 2 was
    also referenced in both TIA’s. Suffolk asserts that TIA 4’s
    inclusion of bulletin 2, which listed changes to the plumbing
    through December 31, 2011, shows that TIA 4 was simply a
    continuation of delay arising from the same set of plumbing
    issues. Finally, Suffolk asserts that TIA 3 included language
    indicating further changes to the underground plumbing
    resulting in delay in the following month would be addressed in a
    subsequent claim: “TIA 3.1 impact continues into January 2012
    and will be provided in a month-by-month analysis as required by
    LAUSD.”
    Suffolk points out that in instructing the jury, the trial
    court collectively referred to TIA’s 3 and 4 as “the plumbing
    conflict issue.”
    LAUSD argues that simply because there were a few
    commonalities between TIA 3 and TIA 4 does not mean that the
    jury was required to find that the plans and specifications for
    TIA’s 3 and 4 were either both correct or both incorrect. While
    there was some overlap, LAUSD argues, TIA 3 involved design
    issues unique to it and not at issue or implicated in TIA 4. First,
    in TIA 3 Suffolk claimed design issues raised in RFC’s 169, 190,
    191, and 195 delayed the project.45 None of these alleged design
    45    In RFC 169, for example, Suffolk asked for further
    information regarding the location of plumbing sleeves to permit
    a waste line to run through concrete footings at the ES building.
    LAUSD responded to RFC 169 on December 23, 2011. Suffolk
    claimed the plumbing subcontractor installed the two sleeves on
    December 27, 2011. Thus, this design issue underlying RFC 169
    was resolved and no longer at issue in January 2012. Evidence
    79
    changes were at issue in TIA 4. These RFC’s dealt with alleged
    design conflicts involving plumbing lines and foundations at
    specific locations. There was no overlap between TIA 3 and TIA 4
    on these issues. In addition, TIA 3 and TIA 4 have distinct time
    frames, as Suffolk admits.
    LAUSD points out that just because several design issues
    are grouped into a single bulletin, such as bulletin 2, or paid for
    through a single CAP, does not mean that those design issues are
    identical or that they all stem from the same part of the project’s
    design. LAUSD challenges Suffolk’s suggestion that CAP 106
    proves that the verdict is inconsistent. CAP 106 paid Suffolk’s
    net increased direct costs for a broad range of changed work, and
    contained design-related clarifications on issues unrelated to any
    of the issues in TIA 3, TIA 4, or bulletin 2. For example, CAP 106
    included payment for changes set forth in bulletin 1. This was
    unrelated to the plumbing issues in the ES. In addition, bulletin
    2 provided dozens of design updates, revisions, and clarifications,
    many of which were unrelated to the plumbing issues.
    Finally, LAUSD argues that even if the jury verdict were
    inconsistent as to its findings on TIA’s 3 and 4, any such error is
    harmless, as the jury found that LAUSD’s breach as to TIA 3 was
    not a substantial factor in causing harm to Suffolk. Thus,
    because Suffolk failed to prove causation, a new trial is not
    necessary, and any inconsistency is harmless and moot.
    at trial suggested that the sleeves were not actually installed
    until January 26, 2012, a month later than Suffolk represented,
    due to delays attributable to Suffolk. Garawi testified that
    Suffolk waited a month after getting a response before doing the
    work. Garawi testified that LAUSD did not hold up the work,
    thus the fault was with Suffolk.
    80
    3. Analysis
    Suffolk bears a heavy burden of showing that the jury
    verdict is impossible to reconcile. (Markow, supra, 3 Cal.App.5th
    at p. 1048.) Based on the evidence described above, we find that
    Suffolk has failed to meet this burden. Suffolk admits that the
    two TIA’s covered different time frames. In addition, the two
    TIA’s were presented to the jury as two separate issues to be
    resolved. And on the jury form, the jury was given the option of
    providing different answers to the question of whether LAUSD
    breached the implied warranty of correctness as to the two
    TIA’s.46
    At best, Suffolk has shown that there were some common
    issues that spanned the two TIA’s. The record shows that
    unrelated issues were grouped together into documents such as
    CAP 106 and bulletin 2 during the project. Suffolk points to no
    testimony or argument in the record requiring that jury treat the
    two TIA’s as inextricably linked. Suffolk does not dispute that
    the two TIA’s were not identical, thus allowing room for the jury
    to determine that while the plans underlying the claims in TIA 3
    were incorrect, the plans underlying the claims in TIA 4 were
    correct.
    Suffolk argues that the jury’s responses to the question of
    breach for TIA 3 and TIA 4 were required to be the same because
    “it took two months to correct the collective errors in the
    46    The parties have not raised the issue, but we note that
    where the special verdict form allows for two different answers on
    the same issue, a party may be foreclosed from objecting to an
    inconsistent verdict under the doctrine of invited error.
    (Mesecher v. County of San Diego (1992) 
    9 Cal.App.4th 1677
    ,
    1685-1687.)
    81
    plumbing drawings.” Suffolk contends this point is “undisputed,”
    despite Garawi’s testimony that the blame for the delay lay at
    least partially with Suffolk. Suffolk suggests that the jury
    suffered some “confusion or lack of understanding” that led to the
    purportedly inconsistent verdicts. Again, we note that the
    manner in which the evidence was presented, as well as the
    questions on the jury verdict, invited different answers to the two
    questions. Given the voluminous and diverse evidence the
    parties presented on TIA’s 3 and 4, we decline to find that Suffolk
    has shown an irreconcilable verdict. The verdicts are affirmed
    and retrial is not required.
    III. Cross-motions for summary adjudication—phase 3
    In November 2014, Suffolk sued its concrete subcontractor,
    Daum, for breach of contract. Suffolk prayed for attorney fees
    against Daum. Daum cross-complained against Suffolk for
    breach of contract and related claims. In its answer to Daum’s
    cross-complaint, Suffolk requested attorney fees.
    After phase 2, Daum made a motion for attorney fees
    against both LAUSD and Suffolk. The trial court found that
    Daum was entitled to recover its fees against Suffolk only under
    their subcontract and awarded Daum $775,523 against Suffolk.
    Thereafter, LAUSD and Suffolk filed cross-motions for summary
    adjudication on the issue of whether LAUSD was liable to
    Suffolk, under Suffolk’s implied contractual indemnity or breach
    of contract cause of action, for Suffolk’s obligation to pay attorney
    fees to Daum.
    The trial court granted LAUSD’s motion for summary
    adjudication and denied Suffolk’s motion for summary
    adjudication. The trial court denied Suffolk’s claim on the ground
    of contractual indemnity, finding that Suffolk failed to establish
    that LAUSD had a joint legal obligation to compensate Daum for
    82
    its fees. The trial court also found that Suffolk failed to establish
    that LAUSD was liable for the attorney fees as an element of
    damages based on breach of contract. Suffolk argues that the
    trial court erred.
    The attorney fees at issue in phase 3 were fees that the
    trial court awarded to Daum for expenses Daum incurred in
    litigating the concrete cracking issue (phase 1). As the concrete
    cracking issue will be retried, the issue of liability may be
    resolved differently. Thus, we find that we need not resolve this
    issue at this time. Particularly because Suffolk casts the issue as
    a “question of first impression,” we find that it is better addressed
    when there exists an actual controversy.
    IV. Suffolk’s appeal versus Daum
    In its appeal against Daum, Suffolk challenges the trial
    court’s award of attorney fees to Daum. Suffolk challenges the
    award on several grounds. First, Suffolk challenges the award on
    procedural grounds, arguing that the trial court erred in granting
    Daum attorney fees based on an argument Daum presented in a
    supplemental brief following oral argument. Suffolk also argues
    that the trial court erroneously interpreted the contract between
    Suffolk and Daum, and erroneously failed to apportion
    recoverable fees.
    As set forth above, Daum’s fees were related to the concrete
    cracking issue. As that issue will be retried, we decline to
    address Suffolk’s arguments regarding attorney fees at this time.
    V.     Fisk’s appeal versus Suffolk
    Fisk was a subcontractor hired by Suffolk to perform work
    on the project. Due to the problems encountered during the
    building process, Fisk expended additional manpower and
    resources to complete its work on the project. Fisk provided
    notice to Suffolk as to how the delays would adversely affect
    83
    Fisk’s performance and the increased costs associated with Fisk’s
    efforts. On February 28, 2014, Fisk submitted to Suffolk a
    certified claim in the amount of $1,908,157.61. Suffolk treated
    Fisk’s claim as a pass-through claim.
    Fisk’s damages were only associated with TIA 5, which
    involved the concrete cracking issue. At trial, Fisk presented its
    damage calculations to the jury through an employee, Jennifer
    Sears, and an expert, Ted Scott. The two witnesses provided
    different totals for Fisk’s damages. As the trial court noted, Fisk
    originally claimed $2,084,683 in damages, and the jury awarded
    $1,721,038.63. The jury broke down Fisk’s award as follows:
    $1,046,479 against LAUSD, and $674,559.63 against Suffolk.
    While there was no suggestion that Fisk was at fault for
    any of its losses, the jury was required to determine the amount
    of Fisk’s damages and the question of which party—LAUSD or
    Suffolk—was ultimately responsible for paying Fisk’s claim.
    Because no party on appeal challenges the jury’s determination of
    Fisk’s claim of damages, that number has been conclusively
    determined by the jury and need not be retried in the remand of
    the damages trial for TIA 5. However, the allocation of Fisk’s
    damage award between LAUSD and Suffolk is an issue that will
    need to be retried on remand. For this reason, as set forth in
    more detail below, we conclude that we need not address the
    specific issues presented in Fisk’s appeal: (1) whether the trial
    court erred in denying Fisk’s motion for attorney fees on
    procedural grounds and (2) whether the trial court erred in
    declining to award Fisk prejudgment interest on the portion of its
    award payable from Suffolk.
    A.    Attorney fee award
    Following phase 2, Fisk sought attorney fees against
    Suffolk under a theory that it was the prevailing party under the
    84
    subcontract as well as under the terms of Suffolk’s performance
    bond.47 The trial court acknowledged that Fisk would be entitled
    to attorney fees from “the Payment Bond Defendants,” provided
    the fees were shown to be reasonable. However, the trial court
    found that Fisk failed to provide sufficient evidence in its moving
    papers supporting its fee request and failed to use an appropriate
    method to show that its fees were reasonable. Fisk appeals this
    discretionary decision.
    Given that damages for TIA 5 will be retried, we decline to
    address this issue. While Fisk’s damages have been determined
    by the jury, Fisk will be required to present evidence to a new
    jury on remand concerning the allocation of liability for those
    damages as between LAUSD and Suffolk. As such, Fisk will
    incur additional attorney fees. As all attorney fee issues as to
    damages for TIA 5 will be reconsidered at a later date, the award
    of attorney fees to Fisk should also be decided at that time.
    B.    Prejudgment interest against Suffolk
    The trial court awarded Fisk prejudgment interest against
    LAUSD at the rate of 10 percent from and after February 15,
    2017.48 However, the trial court denied Fisk prejudgment
    interest on the portion of its award that it was awarded against
    Suffolk. Fisk had asserted a right to prejudgment interest
    against Suffolk pursuant to Civil Code section 3287, subdivision
    47    Suffolk’s performance bond contained an attorney fee
    provision. The parties did not dispute that an obligee is entitled
    to recover its attorney fees pursuant to a claim made on a
    performance bond containing an attorney fee provision. (Mepco
    Services, Inc. v. Saddleback Valley Unified School Dist. (2010)
    
    189 Cal.App.4th 1027
    , 1048-1049.)
    48    February 15, 2017, was the date of the phase 1 verdict.
    85
    (a) (section 3287), which provides for mandatory prejudgment
    interest where damages are “certain, or capable of being made
    certain by calculation.” The trial court reasoned that because the
    jury had to determine Fisk’s damages, “the amount was neither
    liquidated [n]or capable of calculation so as to entitle Fisk to
    interest under section 3287(a).” The court also denied Fisk
    discretionary interest against Suffolk, as the liability of Suffolk
    was not established until after the phase 2 trial was concluded.
    Fisk appeals, arguing that because no party contested
    Fisk’s entitlement to its claim, the date upon which prejudgment
    interest should be calculated was the date of the filing of Fisk’s
    complaint, which was May 22, 2014.
    We agree with the trial court that Fisk’s claim was
    uncertain. While the parties did not provide contradictory
    evidence undermining Fisk’s claims, the jury was required to
    determine the amount owed to Fisk based on the varied evidence
    presented at trial. While it is true that the jury awarded Fisk an
    amount close to what it sought, the jury was not required to do
    so. The jury was presented with Fisk’s records, the testimony of
    Fisk’s employee and the testimony of an expert witness, each of
    whom came up with different numbers. It was for the jury to
    decide, based on the evidence, the amount of Fisk’s damages. The
    question of the amount of Fisk’s damages was a factual question
    to be resolved at trial.49
    49    Leff v. Gunter (1983) 
    33 Cal.3d 508
    , 520, is distinguishable.
    In Leff, the calculation of damages was calculated “mechanically,
    on the basis of uncontested and conceded evidence of the value of
    the IRS Center upon its completion, the balance due on the
    indebtedness to which it was subject, and the extent of plaintiff’s
    interest in the original joint venture.” (Ibid.) Under those
    86
    Thus, section 3287, subdivision (a), is inapplicable. While
    the trial court denied Fisk discretionary interest as to the
    amount owed from Suffolk on the ground that Suffolk’s liability
    was not determined until the phase 2 trial was concluded, the
    issue of discretionary prejudgment interest will be subject to
    reconsideration upon motion of Fisk following retrial of the TIA 5
    damages.
    DISPOSITION
    The phase 1 verdict is reversed and remanded for retrial, as
    is the damages phase of trial for TIA 5, which was held in
    phase 2. The JNOV on the retention of funds issue is reversed,
    and the trial court is directed to enter judgment on that issue in
    keeping with the jury verdict. The remaining issues arising out
    of phase 2 are affirmed. The phase 3 judgment is reversed, to be
    reconsidered following the retrial of damages, as are the trial
    court’s orders regarding attorney fees and prejudgment interest.
    Each party is to bear its own costs of appeal.
    ________________________
    CHAVEZ, J.
    We concur:
    ________________________              ________________________
    LUI, P. J.                            ASHMANN-GERST, J.
    circumstances, the plaintiff was “‘entitled, as a matter of right, to
    recover prejudgment interest on the sum awarded from the time
    such sum became due.’” (Ibid.) In the matter before us, as shown
    from the varying evidence at trial, no such simple “mechanical”
    calculation was possible.
    87
    Filed 4/21/23
    CERTIFIED FOR PARTIAL PUBLICATION
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SECOND APPELLATE DISTRICT
    DIVISION TWO
    SUFFOLK CONSTRUCTION              B285400
    COMPANY, INC.,
    (Los Angeles County
    Plaintiff, Cross-defendant   Super. Ct. No. BC541085)
    and Appellant;
    ORDER CERTIFYING
    FISK ELECTRIC COMPANY,            OPINION FOR PARTIAL
    PUBLICATION
    Plaintiff and Appellant,
    v.
    LOS ANGELES UNIFIED
    SCHOOL DISTRICT,
    Defendant and Appellant;
    R.J. DAUM CONSTRUCTION
    COMPANY,
    Defendant, Cross-
    complainant and Respondent.
    THE COURT:*
    The opinion in the above-entitled matter filed on March 30,
    2023, was not certified for publication in the Official Reports.
    Pursuant to California Rules of Court, rules 8.1105(b) and
    8.1110, this opinion is certified for publication with the exception
    of the Discussion parts I.A.2 through V.
    There is no change in judgment.
    The requests to publish by the Los Angeles Unified School
    District, the Metropolitan Water District of Southern California,
    the San Bernardino County Transportation Authority, the Los
    Angeles County Metropolitan Transportation Authority and the
    Contra Costa Transportation Authority are granted as specified
    above.
    *   LUI, P. J.       ASHMANN-GERST, J.                 CHAVEZ, J.
    2