Elfin Forest Harmony Grove Town Council v. County of San Diego CA4/1 ( 2021 )


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  • Filed 10/14/21 Elfin Forest Harmony Grove Town Council v. County of San Diego CA4/1
    NOT TO BE PUBLISHED IN OFFICIAL REPORTS
    California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for
    publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication
    or ordered published for purposes of rule 8.1115.
    COURT OF APPEAL, FOURTH APPELLATE DISTRICT
    DIVISION ONE
    STATE OF CALIFORNIA
    ELFIN FOREST HARMONY GROVE                                           D077611, D078101
    TOWN COUNCIL et al.,
    Plaintiffs and Respondents,
    (Super. Ct. No.
    v.                                                          37-2018-00042927-CU-TT-CTL)
    COUNTY OF SAN DIEGO,
    Defendant and Appellant,
    RCS-HARMONY PARTNERS, LLC,
    Real Party in Interest and
    Appellant.
    CONSOLIDATED APPEALS from a judgment of the Superior Court of
    San Diego County, Katherine Bacal, Judge. Affirmed in part, reversed in
    part and remanded with directions.
    Hecht Solberg Robinson Goldberg & Bagley and Beth Abramson, Sadaf
    Behdin; Richard A. Schulman, for Real Party in Interest and Appellant.
    Shute, Mihaly & Weinberger and Winter King, Tori Gibbons for
    Plaintiffs and Respondents.
    In these consolidated appeals,1 appellant and real party in interest
    RCS-Harmony Partners, LLC challenges an order granting the writ of
    mandate of respondents Elfin Forest Harmony Grove Town Council,
    Endangered Habitats League, and Cleveland National Forest Foundation,
    which challenged the County of San Diego’s (County) approval of the
    Harmony Grove Village South project (the Project) and certification of a final
    Environmental Impact Report (EIR) for the Project under the California
    Environmental Quality Act (CEQA; Pub. Resources Code, § 21000 et seq.).2
    The superior court ordered County to set aside its approval of the Project,
    finding the EIR relied on unsupported greenhouse gas mitigation measures
    and failed to address certain fire safety issues or relied on unsupported fire
    evacuation measures. It found County failed to proceed in the manner
    required by CEQA by not including certain forecasts or analyses relevant to
    1     Appellant filed notices of appeal of both a February 20, 2020 minute
    order granting the requested writ of mandate and a July 21, 2020 judgment
    that incorporated the minute order, specified the terms of a writ of mandate,
    and disposed of all issues. This court consolidated the appeals. County had
    also appealed the order, but dismissed its appeal and withdrew from the case.
    2      Public Resources Code sections 21000-21177 codify CEQA provisions.
    (Sierra Club v. County of Fresno (2018) 
    6 Cal.5th 502
    , 507, fn. 1 (Sierra
    Club).) Undesignated statutory references are to the Public Resources Code.
    Regulations set forth in title 14 of the California Code of Regulations guide
    CEQA’s application; those are often referred to as the CEQA Guidelines
    (Guidelines). (Communities for a Better Environment v. South Coast Air
    Quality Management Dist. (2010) 
    48 Cal.4th 310
    , 319, fn. 4.) “In interpreting
    CEQA, we accord the Guidelines great weight except where they are clearly
    unauthorized or erroneous.” (Vineyard Area Citizens for Responsible Growth,
    Inc. v. City of Rancho Cordova (2007) 
    40 Cal.4th 412
    , 428, fn. 5 (Vineyard
    Area Citizens).)
    2
    air quality impacts and failed to show the Project was consistent with a San
    Diego Association of Governments (SANDAG) regional plan for growth and
    development. The court finally found the Project inconsistent with County’s
    General Plan’s requirement that developers provide an affordable housing
    component when requesting a General Plan amendment, and also conflicted
    with a policy of the Elfin Forest and Harmony Grove San Dieguito
    Community Plan (Community Plan) that Elfin Forest development be served
    only by septic systems for sewage management.
    Appellant contends the court erred by its ruling. It contends: (1) the
    Project’s greenhouse gas emission mitigation measures are supported by
    substantial evidence and also satisfy the performance standards set forth by
    this court in Golden Door Properties, LLC v. County of San Diego (2020) 
    50 Cal.App.5th 467
     (Golden Door), making them materially different from the
    non-CEQA-compliant mitigation measure M-GHG-1 invalidated in Golden
    Door; (2) the EIR adequately addressed fire safety and evacuation; (3) the
    EIR properly evaluated the Project’s impact on air quality and land use
    plans; (4) the Project’s approval was consistent with County’s General Plan
    policy regarding affordable housing; and (5) the trial court incorrectly applied
    a septic policy to the Project.
    We conclude the Project’s greenhouse gas mitigation measures M-GHG-
    1 and M-GHG-2 suffer from many of the same flaws as M-GHG-1 in Golden
    Door, supra, 
    50 Cal.App.5th 467
     in that they lack objective performance
    criteria to ensure the effective and actual mitigation of greenhouse gas
    emissions, and also improperly defer mitigation. However, we agree with
    appellant that the EIR adequately addressed fire safety and evacuation, as
    well as the Project’s consistency with County’s regional air quality and
    transportation/development plans. We hold the Project does not conflict with
    3
    the Community Plan, but that County erred by finding it is consistent with
    its General Plan, which requires developers to provide an affordable housing
    component when seeking a General Plan amendment, as the appellant is
    here. Accordingly, we affirm in part, reverse in part and remand with
    directions set out below.
    FACTUAL AND PROCEDURAL BACKGROUND
    Appellant proposed the Project in 2015, several years after County
    updated its General Plan and adopted the Community Plan. County’s
    General Plan, which we overviewed in Golden Door (supra, 50 Cal.App.5th at
    p. 488), was updated in 2011 to guide growth within “villages” in “compact
    land development patterns to minimize intrusion into agricultural lands and
    open spaces,” prohibit leapfrog development, preserve the character of rural
    and semi-rural communities, and use an environmentally sustainable
    approach to planning, including development techniques to reduce
    greenhouse gas (or GHG, as used in the EIR) emissions. Both Elfin Forest
    and Harmony Grove are rural communities in very high wildland fire threat
    areas. Both communities seek to preserve and maintain their rural character
    by their Community Plan. In part, Elfin Forest does this by requiring all
    development to be served only by septic systems for sewage management.
    For Harmony Grove Village, the plan “strongly discourage[s]” development
    outside the village of commercial or industrial uses inconsistent with the
    community character.
    The Project is situated on 111 acres of presently undeveloped land
    south of and contiguous to the existing Harmony Grove Village. It is within
    the Elfin Forest and Harmony Grove Planning Area of the San Dieguito
    Community Planning Area, whose existing land use designations are semi-
    rural residential and rural lands. Public access for existing and future
    4
    residents is solely via Country Club Drive (a north-south connector abutting
    the Project’s western boundary). The Project proposes development of 453
    residences, 5,000 square feet of retail/commercial space, approximately 35
    acres of biological open space, about 9 acres of public and private parks, and
    36 acres for common area open space, manufactured slopes and landscaping.
    The Project includes a range of lot sizes from 1,462 square feet to 4.85 acres,
    with single family homes ranging from 1,500 to 3,000 square feet and multi-
    family units ranging from 800 to 2,000 square feet. To allow such
    development, appellant proposed that County approve rezoning to change
    certain land use designations, a General Plan amendment, and a Community
    Plan amendment to add the Project as a component of the existing Harmony
    Grove Village plan area, and extend the boundary line of the village.3
    A draft EIR, prepared for County as the lead agency, circulated for
    public review in mid-2017. It stated the Project would have a significant and
    unmitigated impact on air quality, explaining it proposed an increase in
    housing beyond what the County’s Regional Air Quality Strategy (RAQS)
    included for the site, which would be “cured upon [County’s] transmittal . . .
    of revised housing forecasts and action by the San Diego Air Pollution Control
    District.” It identified other significant impacts that would be mitigated to a
    3     Specifically, the zoning for the Project area would change from Limited
    Agricultural and Rural Residential to a Specific Plan that would allow for
    residential, limited retail/commercial, utilities/institutional and open
    space/recreational uses. The General Plan would be amended to redesignate
    a portion of the property from Semi-Rural Regional to Village Regional and
    change the land use designation from Semi-Rural Residential to Village
    Residential and Neighborhood Commercial. The Community Plan
    amendment would add Harmony Grove Village South as an “independent but
    compatible component” of the Harmony Grove Village Specific Plan area,
    revise portions of the Community Plan text for General Plan conformance,
    and adjust the Village boundary line.
    5
    less-than-significant level. Among other things, the draft EIR included a
    section on greenhouse gas emissions and a Greenhouse Gas Analyses Report.
    It stated the Project would be consistent with local and State plans and
    policies to reduce GHG emissions, and thus impacts from such emissions
    would not be significant. As for wildland fire hazards, the draft EIR
    explained that after the 2003 wildfires, County had included fire prevention
    strategies into its CEQA review process, including requiring a Fire Protection
    Plan (fire plan) for wildland urban interface areas. It outlined numerous fire
    protective features of the Project (discussed more fully below), which included
    incorporating philosophies and physical attributes of “shelter in place”
    communities such as ignition-resistant structures built to latest codes,
    defensible landscape, available water supply throughout, and last-resort
    temporary refuge if early and safe evacuation was not possible. The draft
    EIR concluded that impacts associated with wildland fire hazards would be
    less than significant; the Project would not expose people or structures to a
    significant risk of loss, injury or death from wildland fire given the numerous
    design features, the presence of a planned nearby fire station 1.3 miles from
    any structure on the Project site, and its compliance with fire codes and the
    fire plan, which had been accepted by the San Diego County fire authority.
    Public comments on the draft EIR complained about its analysis of the
    Project’s air quality impacts and contribution to climate change, and
    treatment of greenhouse gas emissions. Other comments focused on the
    Project’s consistency with County’s General Plan as well as its compliance
    with County standards for protection against wildfire threats, including
    secondary egress requirements and the draft EIR’s analysis of fire hazards,
    mitigation measures, and evacuation risk. Respondent Elfin Forest Harmony
    Grove Town Council (Town Council) specifically challenged the draft EIR’s
    6
    fire hazard conclusions as in conflict with General Plan policies and Fire
    Code provisions guarding against fire hazards, including secondary egress
    requirements, stating the Project would be both unlawful and also “would
    likely put lives and property in jeopardy.” Town Council submitted a Wildfire
    Risk & Mitigation Analysis Report by Dr. Matthew Rahn (the Rahn report).
    Dr. Rahn asserted the draft EIR failed to adequately describe the modern
    risk of wildfires in the area or assess all known ignitions; that “[m]odern
    catastrophic wildfires are significantly different from the historic fire regime”
    in that “[c]urrently, only a fraction of the wildfires . . . in California are
    caused by natural events, with nearly ninety-five percent started by human
    activities.” Dr. Rahn asserted the Project did not comply with standards
    related to emergency access, and the draft EIR provided no evidence that
    during an emergency the measures would provide the same or higher level of
    community protection and safety. He criticized the draft EIR’s evacuation
    plan, community design and shelter-in-place measures as not providing
    adequate protection and assurance that the community could safely respond
    to severe wildfires. He also criticized the draft EIR and fire plan as based on
    improper modeling and not considering recent trends in the causes of wildfire
    7
    ignition, including the “potential for an increase in human-caused fire events”
    given the increased population.4
    During the review period, this court invalidated the draft EIR’s method
    (County’s “Efficiency Metric”) used to evaluate the potential impacts
    associated with the Project’s greenhouse gas emissions. (Golden Door
    Properties, LLC v. County of San Diego (2018) 
    27 Cal.App.5th 892
    , 904-905.)
    Thus, County recirculated a draft EIR with revisions to the greenhouse gas
    emissions analyses, along with a supplement to the Greenhouse Gas
    Analyses Report. The supplement concluded that the Project would generate
    4,411 metric tons of carbon dioxide (MTCO2e) during construction and 5,222
    4      Dr. Rahn’s 95 percent statistic is not accompanied by a supporting
    footnote or citation. He observed in part that future fires would likely not be
    exclusively wind driven. He wrote: “Given recent trends and possible
    changes due to a myriad of interrelated factors such as climate change,
    succession, and invasive species, there may be a concomitant increase in both
    human-caused fire events and lightning-caused wildfires. These scenarios
    are not addressed in the [draft EIR] or the Plan. For example, human-caused
    ignition events are predicted to increase with population. [Footnote omitted.]
    This is exacerbated by the prediction that there will also be an increase in the
    frequency of lightning as a result of climate change. [Footnote omitted.]
    This, of course, has direct implications for the risk of wildfires that we are
    already experiencing. [¶] In 2008, over 2,000 wildfires were started by over
    6,000 dry-lightning strikes in Northern California. The record number of
    lightning strikes and extreme drought conditions created catastrophic
    conditions that burned nearly 1.2 million acres, destroyed over 500
    structures, and killed 15 people. [Footnote omitted.] It is assumed that
    climate change is stimulating this change, and may bring lightning-caused
    fires to areas in quantities never seen in recorded history. [Footnote
    omitted.] Adding additional homes to an already burdened fire district adds
    the potential for an increase in human-caused fire events. It should be noted
    that this is not just in reference to arson. Most wildfires today are the cause
    of [sic] human negligence or accidents from vehicles, heavy equipment, lawn
    care equipment, etc.” The italicized sentence of Rahn’s report contains no
    supporting footnote or citation.
    8
    MTCO2e annually during operations after being fully built.5 Characterizing
    these as significant impacts, the draft EIR identified two mitigation
    measures—M-GHG-1 and M-GHG-2—by which the applicant, before issuance
    of the first grading permit and building permits for each implementing site
    plan, would purchase and retire greenhouse gas credits to reduce greenhouse
    gas emissions to net zero. The purchased credits, according to the revised
    draft EIR, “shall achieve real, permanent, quantifiable, verifiable, and
    enforceable reductions.” Through mitigation, the draft EIR and supplement
    concluded the Project’s construction and operation-related greenhouse gas
    emissions would result in a less-than-significant contribution to cumulative
    greenhouse gas impacts, and the Project would not result in a significant
    impact to global climate change.
    The Project’s final EIR, issued in May 2018, incorporated the draft’s
    greenhouse gas and fire mitigation measures and reached the same
    conclusions. It included a May 2018 final fire plan whose preparers included
    fire protection planners and a California licensed forester, as well as a
    Wildland Fire Evacuation Plan (evacuation plan) for the Project
    commissioned by the Rancho Santa Fe Fire Protection District. The County
    5       We explained in Golden Door that greenhouse gases (such as water
    vapor, carbon dioxide, methane, nitrous oxide, hydroflourocarbons,
    perflourocarbons, and sulfur hexafluoride, see Association of Irritated
    Residents v. Kern County Bd. of Supervisors (2017) 
    17 Cal.App.5th 708
    , 731)
    have varying heat retention capacity. “Emissions of [greenhouse gases] are
    expressed as MTCO2e, which is the amount of carbon dioxide in metric tons
    that would have the same global warming potential as the emission of the
    particular [greenhouse gas].” (Golden Door, supra, 50 Cal.App.5th at p. 484,
    fn. 3.)
    9
    Board of Supervisors approved the Project and certified the final EIR as in
    compliance with CEQA.6
    Respondents thereafter filed their challenge. In a verified petition for
    writ of mandate and complaint for declaratory and injunctive relief, they
    alleged that in approving the Project, County violated state and local laws,
    including CEQA, as well as mandatory requirements in its General Plan
    limiting growth outside of designated villages, providing for affordable
    housing, and protecting residents from wildfire threats. They alleged the
    EIR failed to adequately address numerous impacts on air quality,
    greenhouse gases, wildfire, traffic, emergency access and land use. They
    alleged County’s mitigation measures to reduce significant impacts were
    inadequate or ineffective.
    Following a hearing on the matter, the superior court granted the
    petition and directed County to set aside its approval of the Project. Though
    it found the EIR adequately considered the cumulative effect of greenhouse
    gas emissions, it ruled the mitigation measures were unsupported: “[T]he
    [Planning and Development Services (PDS)] Director is allowed to approve
    any ‘reputable’ alternative agency. There is no standard by which the
    Director must evaluate a [carbon credit-issuing] registry’s reputation.
    Moreover there is no assurance that the fact that the Director believes the
    6     Because we directly review County’s findings, we summarize them in
    connection with our discussion of each challenged portion of the EIR.
    Likewise, we later summarize some of respondents’ public comments to the
    draft EIR or the claims made in their writ petition/complaint because it was
    respondents’ burden below to establish inadequacy of the EIR, including to
    demonstrate there was insufficient evidence to support County’s findings.
    (See Stop Syar Expansion v. County of Napa (2021) 
    63 Cal.App.5th 444
    , 450;
    Preserve Wild Santee v. City of Santee (2012) 
    210 Cal.App.4th 260
    , 275
    (Preserve Wild Santee).)
    10
    chosen registry is reputable assures that that registry’s credits are legitimate
    and the offsets will result in net zero [greenhouse gas] emissions.” The court
    further found the EIR’s analysis insufficient on the question of fire safety and
    evacuation times: the EIR did not address how adding new residents would
    affect the potential for wildfires to start, and there was no evidence that
    mitigation measures, including adding a new travel lane to Country Club
    Drive, would be effective in the event the sole evacuation route was blocked
    by fire. It found the EIR failed to actually analyze the Project’s conflicts with
    the RAQS because its statistics about population growth were not included in
    the EIR and thus County failed to proceed in the manner required by CEQA.
    The court also found the Project did not contain an affordable housing
    component and County failed to show it was legally precluded from requiring
    developers to provide such a component; as a result it ruled the Project was
    inconsistent with County’s General Plan policy H-1.9, which required an
    affordable housing component if requesting a General Plan amendment
    “ ‘when this is legally permissible.’ ” The court further found the Project
    fundamentally conflicted with a policy of the Community Plan that any
    development in Elfin Forest be served only by septic systems.
    Several months after the superior court issued its ruling, this court
    decided Golden Door, supra, 
    50 Cal.App.5th 467
    , which involved County’s
    third attempt to adopt a viable climate action plan (at times, CAP) and
    related CEQA documents for it. (Id. at p. 483.) The climate action plan was
    to serve as mitigation to reduce greenhouse gas emissions resulting from land
    development under County’s 2011 General Plan update. (Id. at p. 490.) As
    we more fully explain below, the climate action plan’s greenhouse gas
    emissions projections assumed the effective implementation of a carbon-offset
    mitigation measure—M-GHG-1—which we determined violated CEQA
    11
    because it contained unenforceable performance standards and improperly
    deferred and delegated mitigation. (Id. at pp. 482-483.) It is this mitigation
    measure to which the parties here compare the Project’s greenhouse gas
    emission mitigation measures M-GHG-1 and M-GHG-2.
    DISCUSSION
    I. General CEQA Principles and Standard of Review
    The California Supreme Court has explained the relevant underlying
    principles: “ ‘The foremost principle under CEQA is that the Legislature
    intended the act “to be interpreted in such manner as to afford the fullest
    possible protection to the environment within the reasonable scope of the
    statutory language.” ’ [Citations.] ‘With narrow exceptions, CEQA requires
    an EIR whenever a public agency proposes to approve or to carry out a project
    that may have a significant effect on the environment. [Citations.]’
    [Citations.] The basic purpose of an EIR is to ‘provide public agencies and
    the public in general with detailed information about the effect [that] a
    proposed project is likely to have on the environment; to list ways in which
    the significant effects of such a project might be minimized; and to indicate
    alternatives to such a project.’ [Citations.] ‘Because the EIR must be
    certified or rejected by public officials, it is a document of accountability. If
    CEQA is scrupulously followed, the public will know the basis on which its
    responsible officials either approve or reject environmentally significant
    action, and the public, being duly informed, can respond accordingly to action
    with which it disagrees.’ [Citation.] The EIR ‘protects not only the
    environment but also informed self-government.’ ” (Sierra Club, supra, 6
    Cal.5th at pp. 511-512, fn. omitted.)
    In a CEQA case, as in other mandamus cases, our review “is the same
    as the trial court’s: the appellate court reviews the [public] agency’s action,
    12
    not the trial court’s decision; in that sense appellate judicial review under
    CEQA is de novo.” (Vineyard Area Citizens, 
    supra, 40
     Cal.4th at p. 427.) We
    assess the agency’s determinations and findings under CEQA for abuse of
    discretion. (Sierra Club, supra, 6 Cal.5th at p. 512.) In Sierra Club, the
    court explained there is a “procedural issues/factual issues dichotomy. ‘[A]n
    agency may abuse its discretion under CEQA either by failing to proceed in
    the manner CEQA provides or by reaching factual conclusions unsupported
    by substantial evidence. (§ 21168.5.) Judicial review of these two types of
    error differs significantly: While we determine de novo whether the agency
    has employed the correct procedures, “scrupulously enforc[ing] all
    legislatively mandated CEQA requirements’’ [citation], we accord greater
    deference to the agency’s substantive factual conclusions. In reviewing for
    substantial evidence, the reviewing court “may not set aside an agency’s
    approval of an EIR on the ground that an opposite conclusion would have
    been equally or more reasonable,” for, on factual questions, our task is “not to
    weigh conflicting evidence and determine who has the better argument.” ’ ”
    (Sierra Club, 6 Cal.5th at p. 512; see also Golden Door, supra, 50 Cal.App.5th
    at p. 512; Preserve Wild Santee, supra, 210 Cal.App.4th at p. 275.)
    “[I]n reviewing an EIR for CEQA compliance, we adjust our ‘scrutiny to
    the nature of the alleged defect, depending on whether the claim is
    predominantly one of improper procedure or a dispute over the facts.’
    [Citation.] For example, where a petitioner claims an agency failed to include
    required information in its environmental analysis, our task is to determine
    whether the agency failed to proceed in the manner prescribed by CEQA.”
    (Preserve Wild Santee, supra, 210 Cal.App.4th at p. 275.) However, the
    analysis of “whether an agency has followed proper procedures is not always
    so clear. This is especially so when the issue is whether the EIR’s discussion
    13
    of environmental impacts is adequate, that is, whether the discussion
    sufficiently performs the function of facilitating ‘informed agency
    decisionmaking and informed public participation.’ ” (Sierra Club, 6 Cal.5th
    at pp. 512-513.) Such adequacy-of-discussion issues are not typically
    amenable to substantial evidence review. (Id. at p. 515.) What is clear is
    that in reviewing the adequacy of an EIR’s discussion, a court does not
    “require technical perfection or scientific certainty: ‘ “ ‘[T]he courts have
    looked not for an exhaustive analysis but for adequacy, completeness and a
    good-faith effort at full disclosure.’ ” ’ ” (Ibid.)
    When faced with such claims, we are guided by three basic principles:
    “(1) An agency has considerable discretion to decide the manner of the
    discussion of potentially significant effects in an EIR. (2) However, a
    reviewing court must determine whether the discussion of a potentially
    significant effect is sufficient or insufficient, i.e., whether the EIR comports
    with its intended function of including ‘ “ ‘detail sufficient to enable those who
    did not participate in its preparation to understand and to consider
    meaningfully the issues raised by the proposed project.’ ” ’ [Citation.] (3) The
    determination whether a discussion is sufficient is not solely a matter of
    discerning whether there is substantial evidence to support the agency's
    factual conclusions. [¶] The ultimate inquiry . . . is whether the EIR includes
    enough detail ‘to enable those who did not participate in its preparation to
    understand and to consider meaningfully the issues raised by the proposed
    project.’ [Citations.] The inquiry presents a mixed question of law and fact.
    As such, it is generally subject to independent review. However, underlying
    factual determinations—including, for example, an agency’s decision as to
    which methodologies to employ for analyzing an environmental effect—may
    warrant deference. [Citations.] Thus, to the extent a mixed question
    14
    requires a determination whether statutory criteria were satisfied, de novo
    review is appropriate; but to the extent factual questions predominate, a
    more deferential standard is warranted.” (Sierra Club, supra, 6 Cal.5th at
    pp. 515-516; Golden Door, supra, 50 Cal.App.5th at p. 505.) Whether or not
    the alleged inadequacy is the complete omission of a required discussion or a
    patently inadequate one-paragraph discussion devoid of analysis, the
    reviewing court must decide whether the EIR serves its purpose as an
    informational document. (Sierra Club, at p. 516.)
    When analyzing an agency’s CEQA compliance, “ ‘there is no
    presumption that error is prejudicial.’ (§ 21005, subd. (b).) ‘Insubstantial or
    merely technical omissions are not grounds for relief. [Citation.] “A
    prejudicial abuse of discretion occurs if the failure to include relevant
    information precludes informed decisionmaking and informed public
    participation, thereby thwarting the statutory goals of the EIR process.” ’ ”
    (Banning Ranch Conservancy v. City of Newport Beach (2017) 
    2 Cal.5th 918
    ,
    942; see also Sierra Club, supra, 6 Cal.5th at p. 515 [“ ‘[W]hen an agency fails
    to proceed [as CEQA requires], harmless error analysis is inapplicable. The
    failure to comply with the law subverts the purposes of CEQA if it omits
    material necessary to informed decisionmaking and informed public
    participation. Case law is clear that, in such cases, the error is prejudicial’ ”];
    Neighbors for Smart Rail v. Exposition Metro Line Construction Authority
    (2013) 
    57 Cal.4th 439
    , 463; Golden Door, supra, 50 Cal.App.5th at p. 505.)
    II. Mitigation of Greenhouse Gas Emissions
    A. Project’s Greenhouse Gas Mitigation Measures
    The final EIR provides that the Project’s construction activities and
    operation at full buildout would generate greenhouse gas emissions that may
    have a significant impact on the environment. However, it concludes that
    15
    with mitigation, the impacts will be less than significant. Specifically, it
    states that after analyzing feasible on-site measures to avoid greenhouse gas
    emissions, the Project applicant “has committed to reducing Project
    [greenhouse gas] emissions to ‘net zero’ through the purchase of additional
    off-site carbon credits. The Project’s commitment to achieve net zero
    emissions would be realized through the purchase and retirement of off-site
    carbon offsets. This framework would ensure that the Project results in
    achieving carbon neutrality (i.e., no net [greenhouse gas] emissions.)” The
    EIR acknowledges that the state Air Resources Board (CARB) recognized it
    may be appropriate to mitigate a project’s emissions through this method
    with “credits issued by a recognized and reputable, accredited carbon registry
    when on site measures or regional investments are infeasible or non-
    effective.” Thus, in addition to project design features, the EIR requires the
    applicant to comply with mitigation measures to achieve carbon neutrality
    (i.e., no net greenhouse gas emissions through offset to zero). Those
    measures are labelled M-GHG-1 (for construction activity emissions) and M-
    GHG-2 (for operational emissions).
    M-GHG-1 and M-GHG-2 provide that before issuance of the first
    grading permit, and before issuance of building permits for each site plan, the
    Project applicant “shall provide evidence to the County [Planning and
    Development Services Department (PDS)]” that they have purchased and
    retired carbon credits in the amounts generated by construction and the
    Project’s operation “pursuant to” or “consistent with” the following
    performance standards and requirements:
    “a. The carbon offsets that are purchased to reduce GHG emissions
    shall achieve real, permanent, quantifiable, verifiable, and enforceable
    16
    reductions as set forth in [Health & Safety Code section] 38562[, subdivision]
    (d)(1).
    “b. One carbon offset credit shall mean the past reduction or
    sequestration of one metric ton of carbon dioxide equivalent that is ‘not
    otherwise required’ (CEQA Guidelines section 15126.4[, subd. (c)(3)]).
    “c. Carbon offsets shall be purchased through a CARB-approved
    registry, such as the Climate Action Reserve, American Carbon Registry, or
    Verified Carbon Standard, or any registry approved by CARB to act as a
    registry under the State’s cap-and-trade program. If no CARB-approved
    registry is in existence, then the Applicant or its designee shall purchase off-
    site carbon offset credits from any other reputable registry or entity, to the
    satisfaction of the Director of PDS.
    “d. The County will consider, to the satisfaction of the Director of PDS,
    the following geographic priorities for GHG reduction features, and off-site
    carbon offset projects: (1) Project design features/on-site reduction measures;
    (2) off site within the unincorporated areas of the County of San Diego; (3) off
    site within the County of San Diego; (4) off site within the State of California;
    (5) off site within the United States; and (6) off site internationally.”
    For operational emissions, the EIR permits the Project applicant at its
    election to prepare an “Updated Operational Emissions Report” to present
    evidence that greater reductions of total emissions have occurred, allowing
    County to reduce the amount of credits required to be purchased at the next
    site plan approval phase “if the . . . Director . . . approves the Updated
    Operational Emissions Report and determines that the Applicant has
    demonstrated by substantial evidence that changes in State regulation or
    law, or other increased building efficiencies, have reduced the total MTCO2e
    emitted by the Project and the reduction to the total carbon offsets, is
    17
    consistent with the Project commitment to achieve and maintain carbon
    neutrality (i.e., net zero emissions) for the 30-year life of the Project.”
    The EIR concludes: “Through this offset of all Project GHG emission
    (i.e., to net neutrality), through [M-GHG-1 and M-GHG-2], the Proposed
    Project would have less than significant GHG impacts. The mitigated Project
    would not generate GHG emissions that may have a significant impact on the
    environment because the mitigated Project would have no net increase in
    GHG emission, as compared to the existing environmental setting . . . .
    Because the mitigated Project would have no net increase in the GHG
    emissions level, the mitigated Project would not make a cumulatively
    considerable contribution to global GHG emissions.”
    Appellant contends the Project’s mitigation measures for greenhouse
    gas emissions are unlike the M-GHG-1 mitigation measure for County’s CAP
    that this court invalidated in Golden Door, supra, 
    50 Cal.App.5th 467
    . We
    turn to that opinion and review the invalid mitigation measure in that case.
    B. Golden Door
    In Golden Door, this court considered an EIR for County’s climate
    action plan (actually a supplemental EIR or SEIR), which set out mitigation
    of greenhouse gas impacts from certain development projects not consistent
    18
    with County’s plan.7 (Golden Door, supra, 50 Cal.App.5th at pp. 494, 499.)
    Under Golden Door’s mitigation measure M-GHG-1, a development project
    7     County’s climate action plan and its greenhouse gas reduction
    measures (unchallenged by the plaintiffs in Golden Door and different from
    the mitigation measure at issue in that case) applied to projects consistent
    with land use allowed under its 2011 General Plan. (Golden Door, supra, 50
    Cal.App.5th at pp. 490, 493, fn. 14, 494, 500.) But the plan’s greenhouse gas
    projections did not include certain in-process and future development projects
    requiring a general plan amendment (with density or intensity beyond that
    allowed under the General Plan). (Id. at pp. 494, 500.) The SEIR for the
    plan concluded they could result in significant greenhouse gas impacts and
    may impact County’s ability to meet its climate action plan targets. (Ibid.)
    Thus, the SEIR required those projects to use the measure invalided in
    Golden Door— M-GHG-1—to mitigate greenhouse gas emissions to within
    the threshold of significance, that is, not to exceed the climate action plan’s
    greenhouse gas emission projections. (Ibid.)
    Respondents in this case have requested that we take judicial notice of
    the 2018 SEIR (section 2.7 related to greenhouse gas emissions in the
    supplement to the 2011 General Plan Update Program EIR) as an official act
    of a public entity (Evid. Code, § 452, subd. (b)) and also as a publicly available
    document that is capable of immediate and accurate determination (Evid.
    Code, § 452, subd. (h)). In a supporting declaration, respondents’ counsel
    does not say that the 2018 SEIR, or any of the other documents mentioned in
    the request (CAL FIRE summary reports of the 2018 and 2020 fire seasons
    and draft bills for the 2021-2022 legislative session) were before the superior
    court. Appellant states they were not part of the administrative record. We
    deny the request for judicial notice on that ground (see Golden Door, supra,
    50 Cal.App.5th at p. 516 [denying request for judicial notice of document not
    within administrative record]; Jefferson Street Ventures, LLC v. City of Indio
    (2015) 
    236 Cal.App.4th 1175
    , 1192 [same]), and on the further ground
    respondents have not shown these items existed before County made its July
    2018 decision approving the Project. (See Guidelines, § 15162, subd. (c)
    [“Information appearing after an approval does not require reopening of that
    approval”]; Manderson-Saleh v. Regents of University of California (2021) 
    60 Cal.App.5th 674
    , 694-695 [exceptions allowing admission of extra-record
    evidence do not apply when the evidence is submitted merely to raise a
    question regarding the wisdom of an administrative agency’s quasi-legislative
    decision such as a CEQA ruling].)
    19
    applicant could reduce all project greenhouse gas emissions with two options,
    the second being a “Net Zero” option. (Id. at p. 495.) This allowed the
    applicant to engage in offsite mitigation, including by purchasing carbon
    offset credits originating outside County or in another country, after
    incorporating feasible climate action plan reduction measures and onsite
    design features. (Golden Door, supra, 50 Cal.App.5th at pp. 495, 500.)
    County’s climate action plan’s greenhouse gas projections excluded the
    inconsistent projects’ emissions on the assumption that those projects would
    mitigate their greenhouse gas emissions to zero under M-GHG-1. (Id. at p.
    500.)
    The text of M-GHG-1 in Golden Door incorporated Health and Safety
    Code section 38562, subdivision (d) (section 38562(d)) by reference. (Golden
    Door, supra, 50 Cal.App.5th at p. 507.) That statute is part of the Global
    Warming Solutions Act of 2006 (also referred to as Assembly Bill No. 32) (id.
    at p. 488), which is implemented by CARB and directs CARB to adopt and
    design emissions regulations and reductions measures for greenhouse gases.
    (Our Children’s Earth Foundation v. State Air Resources Bd. (2015) 
    234 Cal.App.4th 870
    , 873-874.) That Act authorizes CARB to include “market-
    based compliance mechanisms” such as greenhouse gas emissions exchanges
    or credits, one of which is the “cap-and-trade” program, to achieve the
    statewide greenhouse gas emissions limit. (Id. at pp. 875-876.) The Act
    “requires that every [CARB] regulation adopting [greenhouse gas] emission
    limits and emission measures ‘shall ensure’ that the [greenhouse gas]
    ‘emission reductions achieved are real, permanent, quantifiable, verifiable,
    and enforceable by the state board.’ ” (Id. at p. 875, citing Health & Saf.
    Code, § 38562(d)(1).) Regulations must further include reductions “ ‘in
    addition to any greenhouse gas emission reduction otherwise required by law
    20
    or regulation, and any other greenhouse gas emission reduction that
    otherwise would occur.’ ” (Ibid., citing Health & Saf. Code, § 38562(d)(2)
    [referring to this as an “ ‘additionality’ requirement”].) These standards are
    further defined in title 17 of the California Code of Regulations. (Golden
    Door, at pp. 506-507.)8
    Golden Door’s measure M-GHG-1 stated in part: “Carbon offset credits
    must be purchased through [certain named registries or through] . . . any
    other reputable registry or entity that issues carbon offsets consistent with
    . . . [Health and Safety code] section 38562(d)(1).” (Golden Door, supra, 50
    Cal.App.5th at p. 507.) It provided that County would consider “to the
    satisfaction of the Director of [PDS]” the following geographic priorities for
    greenhouse gas reduction features, projects and programs: “1) project design
    8      “ ‘ “Real” means . . . that GHG reductions . . . result from a
    demonstrable action or set of actions, and are quantified using appropriate,
    accurate, and conservative methodologies that account for all GHG emissions
    sources, GHG sinks, and GHG reservoirs within the offset project boundary
    and account for uncertainty and the potential for activity-shifting leakage
    and market-shifting leakage.’ [Citation.] ‘ “Permanent” means . . . that
    GHG reductions . . . are not reversible, or when GHG reductions . . . may
    be reversible, that mechanisms are in place to replace any reversed GHG
    emission reductions . . . to ensure that all credited reductions endure for
    at least 100 years.’ [Citation.] ‘ “Quantifiable” means . . . the ability to
    accurately measure and calculate GHG reductions . . . relative to a
    project baseline in a reliable and replicable manner for all GHG emission
    sources . . . .’ [Citation.] ‘ “Verifiable” means that an Offset Project Data
    Report assertion is well documented and transparent such that it lends
    itself to an objective review by an accredited verification body.’ [Citation.]
    ‘ “Additional” means . . . greenhouse gas emission reductions or removals that
    exceed any greenhouse gas reduction or removals otherwise required by law,
    regulation or legally binding mandate, and that exceed any greenhouse gas
    reductions or removals that would otherwise occur in a conservative
    business-as-usual scenario.’ ” (Golden Door, supra, 50 Cal.App.5th at pp.
    506-507, quoting Cal. Code Regs., tit. 17, § 95802.)
    21
    features/onsite reduction measures; 2) offsite within the unincorporated areas
    of the County . . . 3) offsite within the County . . . ; 4) offsite within the State
    of California; 5) offsite within the United States; and 6) offsite
    internationally.” (Id. at p. 570.) Faced with the legal challenge to its plan,
    County in Golden Door argued the M-GHG-1 mitigation measure was
    effective and enforceable because it required offsets to be purchased from
    CARB-approved registries or registries that met Health and Safety Code
    section 38562(d)(1)’s requirements, substantially similar to cap-and trade
    offsets. (Id. at pp. 507, 510.)
    In assessing that argument, this court first observed that “[t]he value
    of any offset depends on whether [greenhouse gas] emission reduction has
    occurred.” (Golden Door, supra, 50 Cal.App.5th at p. 507.) We explained it is
    not possible to examine the greenhouse gas offset to determine its value
    because they are “invisible, [and] they actually didn’t happen. So to have
    confidence in their value, we need a reliable and accurate picture of what
    would have happened, as well as what actually happened.” (Ibid.) Thus, we
    explained, protocols are the procedures for accounting for credits to ensure
    they are an accurate and reliable representation of emission reductions that
    actually occurred; they “ ‘ “qualify and quantify [greenhouse gas] destruction,
    ongoing [greenhouse gas] reductions or [greenhouse gas] removal
    enhancements achieved by an offset project.” ’ ” (Id. at p. 508.) CARB had
    six of its own approved “Compliance Offset Protocols” that cap-and-trade
    offset projects were required to use. (Id. at pp. 508, 509.) CARB could
    invalidate offset credits if newly discovered information showed the protocol
    was noncompliant. (Id. at p. 510.) Further, for out-of-state and foreign
    country offset projects CARB had additional requirements—a “linkage”
    process—which required the Governor to make certain findings about the
    22
    program’s strictness, California’s ability to enforce it, the other jurisdiction’s
    enforcement powers, and the absence of liability on California from the
    linkage. (Ibid.) CARB also approved and ensured qualifications of offset
    project registries, which list projects, collect and verify data, and issue offset
    credits. (Ibid.)
    Given the County’s arguments in Golden Door, we compared the M-
    GHG-1 measure to requirements of offset credits under the cap-and-trade
    model, which had to use the CARB-approved protocols to “ ‘ensure that the
    reductions are quantified accurately, represent real [greenhouse gas]
    emissions reduction, and are not double-counted within the system.’ ” (Id. at
    p. 508.) We held they were not equivalent:
    “M-GHG-1 is materially different from Assem[bly] Bill No. 32
    compliant cap-and-trade offsets in several key respects. Under M-GHG-1,
    offsets must be purchased through ‘(i) a CARB-approved registry, such as the
    Climate Action Reserve, the American Carbon Registry, and the Verified
    Carbon Standard, (ii) any registry approved by CARB to act as a registry
    under the state’s cap-and-trade program, (iii) through the [California Air
    Pollution Control Officers Association Greenhouse Gas Reduction Exchange]
    and [San Diego Air Pollution Control District], or (iv) if no registry is in
    existence as identified . . . above, then any other reputable registry or entity
    that issues carbon offsets consistent with . . . [Health and Safety Code]
    section 38562(d)(1), to the satisfaction of the Director . . . .’ At oral argument,
    the County explained that it is ‘through the use of those registries that the
    protocol gets applied.’ But M-GHG-1 says nothing about the protocols that
    the identified registries must implement. Therefore, implicit in the County’s
    argument is that if the registry administering the offset is CARB-approved,
    then for that reason alone, necessarily the GHG emissions reduction protocol
    23
    administered by that agency is also Assem[bly] Bill No. 32 compliant, thereby
    ensuring the validity of the offset credit claimed. However, this assumption
    is incorrect.” (Golden Door, supra, 50 Cal.App.5th at p. 511.)
    We pointed out that under cap-and-trade, CARB had to approve both
    the registries as well as the protocols themselves, which also had to be from
    sources not already covered by cap-and-trade. (Golden Door, supra, 50
    Cal.5th at pp. 511-512.) We criticized M-GHG-1 for not mentioning protocols
    or requiring any protocol to itself be consistent with regulations setting out
    Board requirements such as permanency. (Id. at p 512; see footnote 8, ante.)
    Nor did M-GHG-1 contain legislative safeguards to ensure out-of-state offsets
    reflected genuine greenhouse gas reductions. (Id. at p. 512.) The only limit
    on mitigating with international offsets was the Director’s unilateral decision
    that offsets were not feasibly available within the unincorporated county, the
    County, California and the United States. (Ibid.) The unaddressed problem
    in M-GHG-1 was that County had no enforcement authority outside
    California, and the measure did not require a finding that an out-of-state
    offset had laws at least as strict as California’s with respect to ensuring the
    offsets’ validity. (Id. at pp. 512-513.) Accordingly, nothing but that
    feasibility determination restricted a project applicant from obtaining up to
    100 percent of its greenhouse gas emission reductions through offsets,
    including international offsets, whereas the cap-and-trade offsets could not
    exceed eight percent of an entity’s entire compliance obligation. (Id. at p.
    513.)
    M-GHG-1 had another significant deficiency (Golden Door, supra, 50
    Cal.5th at pp. 514) in that it did not require the “critical” component of
    “additionality” to prevent greenhouse gases from continuing to increase; that
    requirement was contained in Health and Safety Code section 38562(d)(2)
    24
    (not section 38562(d)(1) referenced in the measure) and the measure was
    silent with regard to that subdivision. (Id. at pp. 513-514, 515.) Though the
    Director could approve offsets issued by any “reputable registry or entity that
    issues carbon offsets consistent with . . . [Health and Safety Code] section
    38562(d)(1),” that subdivision did not require offsets to be additional. (Id. at
    p. 514.)
    This court further held that M-GHG-1 improperly delegated and
    deferred mitigation by allowing the Director to determine whether to approve
    offset credits on grounds (1) the registry or issuing entity is Board-approved
    or “reputable” and issues offsets “consistent with” Health and Safety Code
    section 38562(d)(1) and (2) the offset project is “not. . . ‘available’ or
    ‘financially feasible’ in a location closer to the County as listed in the
    geographical hierarchy.” (Golden Door, supra, 50 Cal.5th at p. 518.) We saw
    this as providing “only a generalized goal of no increase or net zero
    [greenhouse gas] emissions, and then allow[ing] the Director to determine
    whether any particular offset program is acceptable based on unidentified
    and subjective criteria.” (Id. at p. 518.) “M-GHG-1 contains no objective
    standards for determining whether any particular offset project is ‘available’
    and ‘financially feasible’ in one location or another. Without any objective
    and measurable standard for what ‘feasible’ onsite reductions consist of, M-
    GHG-1 provides no reasonable assurance that any onsite [greenhouse gas]
    reduction will actually occur.” (Id. at p. 520.)
    We observed that offset projects in foreign countries presented
    additional concerns, because such offsets were not within CARB’s jurisdiction
    and they were “inevitably dependent upon the host country or third parties to
    validate the activities giving rise to the offset” and posed the problem of
    corruption in the various stages of offset development, which would
    25
    undermine the offset. (Golden Door, supra, 50 Cal.App.5th at p. 510.) Thus,
    we found it “especially troubling” that “M-GHG-1 contains no objective
    standards for the Director to apply in determining whether offsets originating
    in foreign countries are real, permanent, verifiable, enforceable, and
    additional.” (Id. at p. 521.)
    M-GHG-1 also deferred mitigation by entrusting to the “satisfaction of
    the Director” whether the proposed registry was “reputable” and the protocol
    being implemented by it was “consistent” with the criteria (real, permanent,
    verifiable, etc.) set out in Health and Safety Code section 38562(d)(1), without
    objective criteria for making such findings. (Golden Door, supra, 50
    Cal.App.5th at pp. 521-522.) The absence of performance standards was like
    the invalid mitigation measures in other cases having only generalized goals.
    (Id. at p. 522.) It was not “inherently unlawful” under CEQA to delegate the
    M-GHG-1 determinations to the Director, but the measure did not have
    objective criteria for exercising that discretion to ensure that the greenhouse
    gas emissions reduction goals were actually met. (Id. at p. 523.)
    Our conclusions compelled us to invalidate the County’s climate action
    plan, which made greenhouse gas projections that excluded forecasted
    emissions from future and in-process projects requiring a general plan
    amendment on the assumption that M-GHG-1 would mitigate emissions
    above the plan to zero. “Because M-GHG-1 is invalid, there is no factual
    basis for that assumption. Accordingly, to this extent the [climate action
    plan’s] finding that in-process and future [general plan amendments] would
    not result in significant [greenhouse gas] impacts is not supported by
    substantial evidence.” (Golden Door, supra, 50 Cal.5th at p. 525.)
    26
    C. Analysis
    Appellant contends that here, the Project’s M-GHG-1 and M-GHG-2 are
    materially different from Golden Door’s M-GHG-1 because they do not
    depend on or tier from County’s climate action plan, and they contain the
    performance measures that were lacking in Golden Door, supra, 
    50 Cal.App.5th 467
    . It claims that the objective performance standards missing
    in Golden Door are established by the Project’s requirements that offsets
    “shall achieve real, permanent, quantifiable, verifiable, and enforceable
    reductions as set forth in [Health and Safety Code section] 38562(d)(1)”; that
    one carbon offset credit is the past reduction or sequestration of one metric
    ton of “not otherwise required” carbon dioxide equivalent; and that offsets
    “shall be purchased through a CARB-approved registry, such as the Climate
    Action Reserve, American Carbon Registry, or Verified Carbon Standard, or
    any registry approved by CARB to act as a registry under the State’s cap-
    and-trade program” or absent such a registry then from “any other reputable
    registry or entity, to the satisfaction of the Director of PDS.” According to
    appellant, the invalid mitigation measure in Golden Door “had only a soft
    goal without any contextual definition” but the Project’s credits here,
    including those from foreign countries or from a “reputable” registry, must
    satisfy the above performance standards and also be affirmed by an
    independent, qualified third party. Appellant argues the registries must
    have “ ‘adopted rules and procedures governing the retirement or cancellation
    of offsets.’ ” It quotes extensively from the EIR to support its assertion that
    substantial evidence supports the greenhouse gas mitigation measures for
    the Project.
    As we previously acknowledged in Golden Door: “The value of any
    offset depends on whether [greenhouse gas] emission reduction has occurred.”
    27
    (Golden Door, supra, 50 Cal.App.5th at p. 507, italics added.) Adequate
    mitigation requires that greenhouse gas emission reduction will actually be
    obtained, which is determined by valid protocols having objective criteria9 for
    the Director to exercise his or her discretion to ensure that greenhouse gas
    emissions reduction goals are actually met. (Id. at pp. 507-508, 522, fn. 32,
    523.) Such protocols would be compliant with Assembly Bill No. 32 (Golden
    Door, supra, 50 Cal.App.5th at pp. 522, fn. 32) and would ensure offsets meet
    Global Warming Solutions Act requirements that they be real, additional,
    quantifiable, permanent, verifiable, and enforceable. (Health & Saf. Code,
    § 38562.) This is in keeping with CEQA, which requires adequate
    greenhouse gas emissions mitigation (including off-site, not-otherwise-
    required offset measures) to be enforceable, feasible, “supported by
    substantial evidence and subject to monitoring or reporting . . . .” (§ 21081.6,
    subd. (b); Cal. Code Regs., tit. 14, § 15126.4, subds. (a)(2), (c).)
    However, like Golden Door’s M-GHG-1, the Project’s mitigation
    measures do not mention protocols. (Golden Door, supra, 50 Cal.App.5th at
    p. 512.) As the invalid Golden Door measure did, the Project’s M-GHG-1 and
    M-GHG-2 self-impose the requirements of Assembly Bill No. 32 by
    incorporating Health and Safety Code section 38562(d)(1) by reference.
    (Golden Door, at p. 507, fn. 21.) Thus, like appellant here, County in Golden
    Door argued the mitigation measure was valid (“effective and enforceable”)
    because it required purchase of offsets that met those Health and Safety
    9     In Golden Door, we described some criteria that could be used to ensure
    real reductions in various scenarios (recycling, forestry). (Golden Door,
    supra, 50 Cal.App.5th at p. 522 [requiring direct greenhouse gas reduction at
    a recycling facility or sequestering carbon for 100 years to ensure
    permanency].)
    28
    Code section 38562(d)(1) requirements (real, permanent, quantifiable,
    verifiable, and enforceable) from registries. (Id. at p. 507.)
    We agree with respondents that the EIR’s incorporation of the
    regulatory definitions for those requirements in the responses to comments
    does not by itself satisfy CEQA. The question is not whether these standards
    are particularly defined, but whether there are formalized accounting
    procedures in place to ensure credits meet them so as to represent real
    emission reduction. (Golden Door, supra, 50 Cal.App.5th at pp. 507, 522, fn.
    32.) This conclusion applies to M-GHG-1 and M-GHG-2’s provision defining
    “[o]ne carbon offset credit” as “the past reduction or sequestration of one
    metric ton of carbon dioxide equivalent that is ‘not otherwise required.’ ”
    While M-GHG-1 and M-GHG-2 state the offsets “shall” achieve the standards
    of Health and Safety Code section 38562(d)(1), the absence of protocols to
    ensure the standards are met is a fatal deficiency. This is not a requirement
    confined to cap-and-trade, but applies to any market-based compliance
    mechanism under the Global Warming Solutions Act of 2006.10
    Though M-GHG-1 and M-GHG-2 are not identical to Golden Door’s M-
    GHG-1, other common deficiencies in the measures compel us to reach the
    same conclusion as in that case. Like the invalid Golden Door measure
    (Golden Door, supra, 50 Cal.App.5th at pp. 570-571), the mitigation measures
    here give the applicant the option of using a “reputable registry or entity” if
    no CARB-approved registry exists. They “entrust[] to the ‘satisfaction of the
    10    CARB-approved protocols are built into the Global Warming Solutions
    Act, which defines a market based compliance mechanism to include
    “greenhouse gas emissions exchanges [or] credits . . . governed by rules and
    protocols established by the state board,” i.e., CARB. (See Health & Saf. Code,
    § 38505, subd. (k)(2), italics added; Our Children’s Earth Foundation v. State
    Air Resources Board, supra, 234 Cal.App.4th at pp. 877-878.)
    29
    Director’ whether the proposed offset registry is ‘reputable’ . . . .” (Id. at p.
    521.) But like Golden Door’s invalidated measure, the Project’s measures
    have no objective criteria for making such findings. Rather than include
    specific performance standards, they are “based on the Director’s private and
    subjective discretionary determinations.” (Golden Door, at pp. 524, 525.)
    Further, the Project’s M-GHG-1 and M-GHG-2 measures like M-GHG-1
    in Golden Door contain no restrictions on mitigating with offsets originating
    in foreign countries, which present challenges with records and unreliable or
    illegitimate technology. (Golden Door, supra, 50 Cal.App.5th at p. 513.) In
    those situations, it “ ‘can be difficult if not impossible’ to verify [greenhouse
    gas] reductions” (ibid) but M-GHG-1 and M-GHG-2 contain “no objective
    standards for the Director to apply in determining whether offsets originating
    in foreign countries are real, permanent, verifiable, enforceable, and
    additional.” (Id. at p. 521.)
    In global responses to public comments on the EIR, County explained
    that the Project requires use of Board-approved registries, each of which
    “develops its own protocols for estimating emission reductions or adopts parts
    of or full protocols from other registries.” County pointed out that in 2011 the
    Board formally adopted its own protocols, and has since expanded its
    program to accept carbon offsets issued under the American Carbon Registry,
    and Verified Carbon Standard methodologies. But we explained in Golden
    Door that having a Board-approved registry is not enough, and voluntary
    registry protocols themselves must be approved by the Board and determined
    to be compliant with Assembly Bill No. 32. (Golden Door, supra, 50
    Cal.App.5th at pp. 512, 513 [rejecting County’s argument that registries
    would be the enforcement mechanism to ensure validity of offsets in foreign
    30
    countries because the mitigation measure “does not require use of an
    Assem[bly] Bill No. 32 compliant protocol”].)
    An improper deferral issue is presented by the fact that the Director is
    allowed to decide whether to approve offset credits on grounds a non-Board-
    approved registry is “reputable” to the Director’s “satisfaction.” As we held in
    Golden Door, such language “allow[s] the Director to determine whether any
    particular offset program is acceptable based on unidentified and subjective
    criteria.” (Golden Door, supra, 50 Cal.App.5th at p. 518.) It also means that
    achieving the goals set out in M-GHG-1 and M-GHG-2 “depends on
    implementing unspecified and undefined protocols, occurring in unspecified
    locations (including foreign countries), the specifics of which are deferred to
    those meeting one person’s subjective satisfaction.” (Id. at p. 520.) This sort
    of improper deferral causes these measures to violate CEQA. (Ibid.; see Save
    Panoche Valley v. San Benito County (2013) 
    217 Cal.App.4th 503
    , 525 [rule
    against deferral essentially prohibits “ ‘loose or open-ended performance
    criteria’ ” that afford a potential means of avoiding mitigation during project
    implementation, making it “ ‘unreasonable to conclude that implementing the
    measures will reduce impacts to less than significant levels’ ”].)
    We are not persuaded by appellant’s arguments as to the validity of the
    measures. It asserts that the Project’s measures do not depend on County’s
    climate action plan or on that plan’s M-GHG-1. But the Project EIR here
    explained its greenhouse gas analysis was consistent with that plan and that
    its goal of “net zero” emissions effects was “in accord with the . . . M-GHG-1”
    that this court invalidated in Golden Door. The Project’s Greenhouse Gas
    Analyses Report (Appendix J) likewise represents that the Project’s M-GHG-1
    and M-GHG-2 mitigation measures “require the Project to purchase and
    retire carbon offsets in a quantity sufficient to achieve net zero emissions, in
    31
    accordance with [M-]GHG-1 from the County’s Supplemental EIR . . . for its
    [climate action plan].” (Italics added.) Consistent with that comparison, we
    see little difference between the Project’s M-GHG-1 and M-GHG-2 mitigation
    measures and Golden Door’s M-GHG-1.
    Appellant further points out the Project is not aiming to implement
    cap-and-trade, and CEQA does not require that greenhouse gas mitigation
    satisfy cap-and-trade requirements. But CEQA-compliant greenhouse gas
    emission mitigation using future determinations of the validity of offset
    credits must nevertheless have objective standards, not “unidentified and
    subjective criteria.” (Golden Door, supra, 50 Cal.App.5th at p. 520.) In
    Golden Door, we reviewed CEQA-compliant mitigation measures at issue in
    other cases that were found to have sufficient standards, and contrasted
    them with absence of such criteria for the Director’s exercise of discretion in
    M-GHG-1. (Golden Door, supra, 50 Cal.App.5th at pp. 522-523.) As we
    concluded for M-GHG-1 in Golden Door, the failings in the mitigation
    measures for the Project at issue here render them non-CEQA compliant not
    just because they do not meet the sort of standards present in the cap-and-
    trade model, but because they lack objective criteria for the Director’s future
    exercise of discretion.
    Appellant also argues the measures are valid because the EIR requires
    that credits and emissions reductions be confirmed by independent, qualified
    third parties, and that registries have adopted protocols, rules and
    procedures governing the retirement or cancellation of offsets. This portion of
    County’s responses to comments discusses CARB approved registries. There
    is no indication or assurance such standards will apply to an unidentified
    registry that is later determined by the Director to be “reputable.”
    32
    Golden Door explains that mitigating conditions are “ ‘ “not mere
    expressions of hope” ’ ” but must be enforceable through some legally binding
    instrument or agreement so as to result in real, permanent reductions.
    (Golden Door, supra, 50 Cal.App.5th at p. 506.) The deficiencies in M-GHG-1
    and M-GHG-2 prevent them from meeting this standard. We acknowledge
    that this court limited Golden Door’s holdings to the facts of that case, and
    particularly to mitigation measure M-GHG-1. (Golden Door, at p. 483.) But
    the similarities between M-GHG-1 there and the mitigation measures for the
    Project in this case compel us to reach the same conclusion. M-GHG-1 and
    M-GHG-2 provide no reasonable assurance that greenhouse gas reduction
    will actually occur, and they are thus invalid under CEQA.
    III. Impacts Related to Fire Safety
    The final EIR acknowledges that the Project lies within an area
    statutorily designated as a “Very High Fire Hazard Severity Zone.” It also
    lies within a “Wildland Urban Interface,” which is an area where
    development is proximate to open space or lands with native vegetation and
    habitat prone to brush fires. Thus, the EIR stated, improper design and
    maintenance may facilitate the movement of fire between structures and
    vegetation. Fire agencies recorded numerous fires in the Project site’s direct
    vicinity. The fire plan evaluated fire behavior modeling, analyzed emergency
    services and response as well as fire access/evacuation, and cumulative
    impacts. Its purpose was to assess the potential impacts resulting from
    wildland fire hazards and identify the measures necessary to adequately
    mitigate those impacts. Additionally, the San Diego County Fire Authority’s
    Fire Marshal commissioned a Wildfire Risk Analysis by fire and emergency
    management consultant Rohde & Associates, which included assessment of
    the site, fire history, water supply infrastructure, and potential evacuation
    33
    routes.11 That analysis identified the likely paths of wildfire approach to the
    Project as well as recommended routes for escape, analyzing whether escape
    could be compromised by fire movement along those routes. The Rancho
    Santa Fe Fire Protection District’s evacuation plan discusses available
    evacuation routes and their wildfire exposure, potential contingency refuge
    areas along evacuation routes, and other contingencies in case of certain
    circumstances, including when “[f]ire[] . . . prevent[s] safe passage along
    planned evacuation routes . . . .”
    The fire plan explained that it was required to provide mitigation for
    identified impacts to “ensure that development projects do not unnecessarily
    expose people or structures to a significant loss, injury or death involving
    wildland fires.” It “considered the fire risk presented by the site, including:
    property location and topography, geology (soils and slopes), combustible
    vegetation (fuel types), climatic conditions, fire history, and the proposed
    land use and configuration.” It recommended “enhanced fire protection
    11     Respondents do not challenge the qualifications of these consultants.
    The Wildfire Risk Analysis states that they had “[five] staff members with
    over 180 years of collective wildfire experience in Southern California,
    including highly decorated and experienced wildfire commanders and a
    nationally recognized fire behavior analyst.” At County’s request, Rohde and
    Associates analyzed not only evacuation routes, but also the fire fuels
    adjacent to the site, the site’s fire history, the worst case weather conditions
    (including effects of climate change), the likely paths of wildfire, the expected
    fire exposure on the development’s perimeter, the potential for spotting/fire
    branding (from lofted burning wood or other material) into the Project from
    nearby wildfire, whether there was a potential for a shelter-in-place
    mandate, whether there was a potential for civilian entrapment due to
    wildfire within the Project, the recommended sizing of safety zones and
    resource allocations for structural defense within the Project, and whether
    the community water supply adequately addressed fire flow demands from
    the Project during wildfire. It specifically asked whether “civilian’s escape
    [can] be compromised by fire movement along these [evacuation] routes.”
    34
    measures that the Homeowner’s Association . . . and individual property
    owners will take to reduce the probability of structural ignition throughout
    the project.” It also assessed whether the Project would result in inadequate
    emergency access. The fire plan stated the Project would include a layered
    fire protection system designed to current codes with “site specific measures
    that will result in a Project that is less susceptible to wildfire than
    surrounding landscapes and that would facilitate firefighter and medical aid
    response as well as project resident evacuation in a wildfire emergency.”12
    But the Project required an exception to the County Fire Code regarding
    maximum dead end road lengths; given the smaller rezoned parcel size, the
    allowed maximum dead-end road length was 800 feet, but the dead-end road
    leading to the most distant structure measured 1.3 miles to intersection of
    12     These measures or “project design features” include clustering the
    footprint of homes to minimize their placement adjacent to wildland fuels;
    using lower flammability ignition resistant landscape, construction materials
    and structures; improving road access to existing homes east of the Project,
    which would improve those homes’ evacuation situation; widening Country
    Club Drive to have a third travel lane and keeping no structure farther than
    800 feet from that lane; providing three access ways off Country Club Drive
    as a looped interior road system to allow access to the northern roadway if
    one or both southern roads were blocked; replanting the internal Project
    development area with fire-resistant plants, excluding native fuels within the
    Project area and minimizing the likelihood of ignitions internal to the Project;
    placing fire hydrants every 300 feet along Project streets, exceeding the 350-
    foot fire code requirement; lighted entry maps and custom internal signage to
    facilitate navigation; fire department-compliant radiuses and turnarounds for
    roadways; 24 to 30-foot wide private streets; eliminating gates at the Project
    entrance, as well as speed bumps or humps, to enable traffic to flow more
    rapidly in case of emergency; and inclusion of 434 guest parking spaces,
    seven times more than the zoning code required so as to maintain Project
    roads unobstructed for emergency response vehicles. Property owners would
    be required to comply with provisions of the fire plan through homeowner
    association codes, covenants and restrictions.
    35
    Harmony Grove and Country Club Drive, the first opportunity to travel in at
    least two separate directions. Because the EIR determined that secondary
    access was infeasible, it concluded the Project’s use of the site specific
    measures and features constituted an alternate approach for secondary
    access that “meets the intent of the [fire] code . . . .”
    The EIR stated that the “layered and redundant fire protection and
    evacuation system . . . provide[s] a system of fire safety above and beyond the
    code requirements.” It characterized the measures as “an alternative
    approach” that supported a finding by the Rancho Santa Fe Fire Protection
    District that the “intent of the code has been met and [the Project] does not
    lessen health, life and fire safety requirements.” The EIR stated that the
    Project would not expose people or structures to a significant risk of loss,
    injury or death from wildland fires, and that with the addition of a planned
    fire station reducing travel time to all Project lots to under three minutes, the
    Project would more than comply with emergency response objectives. The
    EIR concluded that the impacts associated with wildland fire hazards,
    including cumulative impacts, would be less than significant. Both the San
    Diego County Fire Authority and the Rancho Santa Fe Fire Protection
    District accepted the fire plan.
    In a supplemental letter submitted after release of the final EIR,
    respondent Town Council criticized County’s evacuation analysis and the lack
    of secondary egress, asserting the EIR should have included additional data
    such as hourly vehicle carrying capacity of Country Club Drive, safe
    evacuation route use time window, and a maximum safe density limit for the
    entire existing and zoned potential population of humans and animals.
    Respondents’ petition complained that the EIR did not adequately analyze
    the Project’s potential to increase the fire risk in the area, and its analysis
    36
    “ignore[d] the local population increase the Project will bring.” They relied on
    Dr. Rahn’s 95 percent statistic, saying the EIR ignored the increased chance
    of fires from the additional human presence, and that the EIR’s conclusion
    lacked substantial evidence because it did not consider the effect of increased
    population.
    A. Whether the EIR Adequately Addressed Project Wildfire-Related Impacts
    Is Subject to Independent Review
    As stated above, “whether a description of an environmental impact is
    insufficient because it lacks analysis or omits the magnitude of the impact is
    not a substantial evidence question.” (Sierra Club, supra, 6 Cal.5th at p. 514;
    Chico Advocates for a Responsible Economy v. City of Chico (2019) 
    40 Cal.App.5th 739
    , 847.) “Where the ultimate inquiry is whether an EIR omits
    material necessary to reasoned decisionmaking and informed public
    participation, the inquiry is predominantly legal and, ‘[a]s such, it is
    generally subject to independent review.’ ” (Chico Advocates, at p. 847, citing
    Sierra Club, at p. 516.) The “predominately legal question” presented by
    such an argument is “whether the EIR includes enough detail ‘to enable those
    who did not participate in its preparation to understand and to consider
    meaningfully the issues raised by the proposed project.’ ” (Chico Advocates,
    at p. 847.)
    On this point, “Guidelines section 15126.2, subdivision (a) is
    instructive. It mandates that an EIR ‘identify and focus on the significant
    environmental effects of the proposed project . . . examin[ing] [ ] changes in
    the existing physical conditions in the affected area,’ that it identify and
    describe ‘[d]irect and indirect significant effects of the project on the
    environment,’ and that the discussion should include, among other things,
    ‘relevant specifics of . . . safety problems caused by the physical changes.’
    37
    (Guidelines, § 15126.2, subd. (a), italics added.) It also suggests that a
    connection be drawn between the two segments of information presented in
    the EIR—potential project [impacts] and human [safety] impacts. Such a
    connection would meet CEQA's requirements.” (Sierra Club, supra, 6 Cal.5th
    at p. 520.) That section instructs that an EIR “ ‘shall also analyze any
    significant environmental effects the project might cause by bringing
    development and people into the area affected . . . . Similarly, the EIR should
    evaluate any potentially significant impacts of locating development in other
    areas susceptible to hazardous conditions (e.g., . . . wildfire risk areas) as
    identified in authoritative hazard maps, risk assessments or in land use
    plans addressing such hazards areas.’ ” (California Building Industry Assn.
    v. Bay Area Air Quality Management Dist. (2015) 
    62 Cal.4th 369
    , 388.) Thus,
    “[i]t is proper to evaluate ‘a project’s potentially significant exacerbating
    effects on existing environmental hazards—effects that arise because the
    project brings “development and people into the area affected.” ’ ” (Clews
    Land & Livestock, LLC v. City of San Diego (2017) 
    19 Cal.App.5th 161
    , 194.)
    Also instructive is Appendix G of the Guidelines,13 which suggests an
    agency should determine whether a project will “[e]xpose people or
    structures, either directly or indirectly, to a significant risk of loss, injury or
    death involving wildland fires.” (Guidelines, Appen. G., § IX(g).)
    13    “ ‘Guidelines Appendix G provides an environmental impact checklist
    form that lead agencies may use in preparing an initial study when deciding
    whether to adopt a negative declaration or prepare an EIR for a project.’ ”
    (Joshua Tree Downtown Business Alliance v. County of San Bernardino
    (2016) 
    1 Cal.App.5th 677
    , 689, fn. 3, quoting 1 Kostka & Zischke, Practice
    under the Cal. Environmental Quality Act (2d ed. 2015) § 13.15, pp. 13-15.)
    38
    B. Project’s Impact on Wildfire Risk/Ignition
    Appellant contends that the EIR fully addressed fire safety. It points
    out the EIR was supported by the over 100-page-long fire plan, over 18 pages
    of responses to comments, and the Wildfire Safety Analysis, and asserts State
    (CAL FIRE) and County fire prevention officials who supported the Project
    merit deference. It asserts the Project would actually reduce fire risks in the
    area by improving local ingress and egress with additional travel lanes,
    separating the route from potential fuel, requiring “fire-hardening” of
    structures, requiring new and enhanced setbacks, providing a safe refuge at a
    community building, placing utility lines underground, adding guest parking
    to reduce roadway obstructions, and clustering its residential footprint to
    minimize the number of homes near wildland fuel. Appellant further
    contends the EIR anticipated the Project’s occupancy and evaluated the
    potential increase in wildfires from the development and its occupants. It
    maintains the trial court’s conclusion otherwise (“[t]here is no discussion . . .
    whether or how adding 1400 new residents into the area will affect the
    likelihood of wildfires”) is based on an irrelevant and mischaracterized
    statistic: that “95 percent of modern wildfires in California are started by
    people.”
    Respondents’ argument in their petition was that the EIR did not
    acknowledge the effect of adding human population to the area from the
    Project on the increased potential of wildfires starting. They pointed to
    Rahn’s assertion that nearly 95 [percent] of wildfires are started by human
    activities and the EIR’s acknowledgment that a typical wildfire may be
    caused by a tossed cigarette, car fire, or electrical power line arching, but
    stated the EIR “ignores the obvious implication that the increased human
    presence from the Project will increase the chances of such events.” The trial
    39
    court agreed with these arguments, and ruled the EIR did not address how
    adding new residents would “affect the potential for wildfires to start.”
    On appeal, respondents repeat their assertions about the risks of fire
    ignition from additional residents, but add that the EIR’s analysis assertedly
    did not address the risks to existing residents, nor did it assess “all the known
    ignitions and areas for high historic wildfire risk . . . .” They say “[t]he
    County should have had to explain precisely why bringing 1,400 additional
    people to a non-General Plan compliant development project in a Very High
    Fire Hazard Severity Zone outweighs the grave fire ignition risk to existing
    residents.” They criticize the EIR for mentioning that the Project would
    introduce potential ignition sources and acknowledging typical human causes
    of fire in the vicinity, but not explaining, discussing or “undertak[ing] a
    thorough analysis of” those matters and the increased risk. According to
    respondents, it is not enough that Project features make homes there safer;
    the EIR was to analyze how the additional homes and people increase the fire
    danger, and without it, the public and decisionmakers had no way of knowing
    whether the mitigation measures would reduce the risk to a level of
    insignificance. They argue the Project features “do nothing to stop Project
    residents from engaging in activities in the surrounding areas that could
    increase wildfire ignition risk, such as driving a car or smoking.” They argue
    there is no evidence in the record that the mitigation measures will “decrease
    human ignition risk.”
    We conclude the EIR contains a CEQA-compliant discussion of the
    potential wildland fire risks or exacerbation caused by the Project and the
    fire risks in the Project’s vicinity, and that substantial evidence supports its
    conclusion that the Project measures would reduce them to a level of
    insignificance. The fire plan is incorporated into the EIR as an appendix and
    40
    thus was presented in a manner calculated to adequately inform the public of
    its conclusions. (Stop Syar Expansion v. County of Napa, supra, 63
    Cal.App.5th at p. 460.) It refers to the applicable standard of significance,
    asking whether the Project would “expose people or structures to a significant
    risk of loss, injury or death involving wildland fires, including where
    wildlands are adjacent to urbanized areas or where residences are intermixed
    with wildlands.” The EIR addresses the “wildland fire risk in the vicinity of
    the Project site,” the Project’s impact on the frequency of wildfires, and the
    Project’s introduction of potential “ignition sources.” The EIR quotes from
    the fire plan, stating: “Based on fire behavior modeling, the [fire plan]
    determined that wildfires may occur in wildland areas to the west, east,
    south, and southwest of the Project site, but would not be significantly
    increased in frequency, duration, or size with the construction of the Project.”
    It continues: “One reason is that the developing [Harmony Valley Grove]
    project has created a large lower risk area in alignment with north/northeast
    wind directions, reducing the fire threat at the Project site. In addition,
    various Project features would result in a site that is less susceptible to
    wildfire than surrounding landscapes and that would facilitate firefighter
    and medical aid response as well as Project resident evacuation in a wildfire
    emergency. The Project is providing code-exceeding measures . . . through a
    layered and redundant fire protection and evacuation system that would
    result in a highly defensible community, offer a means of equivalent egress,
    and provide contingency planning if evacuation from the site is considered
    unsafe.” The EIR points out that among other things, utility lines would be
    placed underground, addressing at least one human-caused ignition source.
    While this appears in the EIR’s land use section (1.2.2.2), it nevertheless is
    within the EIR, contrary to respondents’ assertion otherwise. (See San Diego
    41
    Citizenry Group v. County of San Diego (2013) 
    219 Cal.App.4th 1
    , 12-13
    [determination of CEQA compliance is based on review of the administrative
    record as a whole].)
    The fire plan observes that currently existing potential ignition sources
    in the area include “vehicles, roadways, illegal recreation users, and off-site
    residential neighborhoods” and acknowledges that “the [P]roject would
    introduce potential ignition sources . . . .” However, it states the Project
    “would also include conversion of ignitable fuels to lower flammability
    landscape and include better access throughout the site, managed and
    maintained landscapes, [ ] and generally a reduction in the receptiveness of
    the area’s landscape to ignition.” The EIR and fire plan discuss in detail the
    features that reduce fire risk (see footnote 12, ante), explaining that the site-
    specific measures “will result in a Project that is less susceptible to wildfire
    than surrounding landscapes and that would facilitate firefighter and
    medical aid response as well as project resident evacuation in a wildfire
    emergency.” The Wildfire Risk Analysis specifically acknowledges the
    existing residents in the area have no safety zones in the vicinity of their
    homes, but states they would use the same evacuation routes and safety
    zones for the Project, and likely “will view the proposed development site
    itself as an opportunity for safe refuge.” The evacuation plan likewise
    discusses potential Project impacts on “existing resident evacuation” (some
    capitalization omitted), explaining that the Project ignition-resistant features
    would give fire officials and decision makers the option of allowing Project
    residents to shelter in their homes, and focusing evacuations on existing
    residents who are at higher risk, mitigating the impact on them.
    Additionally, the evacuation plan explains that as part of Project
    approval, the Project’s homeowners association will be bound to actively
    42
    participate as a partner with the Rancho Santa Fe Fire Protection District to
    assist with the coordination and distribution of fire safety information to
    residents. The association will provide homeowners with complete copies of
    the fire and evacuation plans, as well as a wildfire preparedness program
    (“Ready, Set, Go!”) that focus on awareness for those living in the wildland-
    urban interface.
    The EIR and supporting fire-related studies, in our view, account for
    and seek to mitigate new human-related triggers of fire (“ignition sources”)
    brought in by the Project, which as a new residential development on
    previously undeveloped land inherently increases human population and
    activity in the area. County was entitled to accept the EIR’s and fire officials’
    conclusions that the Project’s impacts, including its addition of ignition
    sources, would not expose people or structures to a significant risk of loss,
    injury or death, over Dr. Rahn’s differing conclusions and suggestions.
    “ ‘When the evidence on an issue conflicts, the decisionmaker is “permitted to
    give more weight to some of the evidence and to favor the opinions and
    estimates of some of the experts over the others.” ’ ” (Town of Atherton v.
    California High-Speed Rail Authority (2014) 
    228 Cal.App.4th 314
    , 349; Chico
    Advocates for a Responsible Economy v. City of Chico, supra, 40 Cal.App.5th
    at p. 851 [same].) Respondents’ assertions about the significance of increased
    human-caused wildfire ignition risk amount to a disagreement between Dr.
    Rahn on the one hand, and the fire officials on the other, who are experts by
    virtue of their jobs and years of experience. (Accord, Greenebaum v. City of
    Los Angeles (1984) 
    153 Cal.App.3d 391
    , 413 [city planning department
    officers qualified as experts on cumulative environmental impacts analysis
    “since [it is] their business”].) A disagreement among experts is not a
    43
    sufficient basis to conclude an EIR is inadequate. (Stop Syar Expansion v.
    County of Napa, supra, 63 Cal.App.5th at p. 460.)
    Our conclusion is bolstered by the fact that Dr. Rahn’s 95 percent
    statistic is a bare assertion that does not support the proposition that
    increased human population significantly increases the wildfire risk. Dr.
    Rahn later cites a study for the proposition that “human-caused ignition
    events are predicted to increase with population.” (Italics added.) County
    reasonably could reject the proposition that a nexus exits between population
    growth, which is a social change, and any significant consequence to the
    public health and safety, or the physical environment. (See Chico Advocates
    for a Responsible Economy v. City of Chico, supra, 40 Cal.App.5th at pp. 847-
    848 [CEQA requires social and economic changes to be addressed if they will
    cause changes in the physical environment].)
    Further, we reject the assertion that the EIR should have evaluated
    “all the known” ignition sources. “ ‘ “[A]n EIR need not include all
    information available on a subject” . . . [all that is required is] sufficient
    information and analysis to enable the public to discern the analytical route
    the agency traveled from evidence to action.’ [Citation.] ‘A project opponent
    or reviewing court can always imagine some additional study or analysis that
    might provide helpful information. It is not for them to design the EIR. That
    further study . . . might be helpful does not make it necessary.’ [Citation.]
    ‘Although others might well assess the significance of [a] risk . . . differently,
    it [is] error for the court to substitute its judgment for that of the Agency.’ ”
    (North Coast Rivers Alliance v. Marin Municipal Water Dist. Bd. of Directors
    (2013) 
    216 Cal.App.4th 614
    , 639-640; see Laurel Heights Improvement Assn.
    v. Regents of University of California (1988) 
    47 Cal.3d 376
    , 415 (Laurel
    Heights); Clover Valley Foundation v. City of Rocklin (2011) 
    197 Cal.App.4th 44
    200, 245 [CEQA does not require the lead agency to perform all recommended
    research to evaluate impacts of a proposed project; “ ‘The fact that additional
    studies might be helpful does not mean that they are required’ ”].)
    “[C]hallenges to the scope of an EIR’s analysis, the methodology used, or the
    reliability or accuracy of the data underlying an analysis, must be rejected
    unless the agency’s reasons for proceeding as it did are clearly inadequate or
    unsupported. [Citation.] The issue for us is ‘ “not whether the [fire plan,
    evacuation plan or Wildfire Risk Analysis] are irrefutable or whether they
    could have been better. The relevant issue is only whether the studies are
    sufficiently credible to be considered as part of the total evidence that
    supports the [agency’s] finding[s] . . . .” ’ ” (Chico Advocates for a Responsible
    Economy v. City of Chico, supra, 40 Cal.App.5th at p. 851.) They are here.
    In sum, we do not decide who has the better argument on whether
    potential adverse impacts of the Project are mitigated or could be better
    mitigated; as “[w]e have neither the resources nor scientific expertise to
    engage in such analysis, even if the statutorily prescribed standard of review
    permitted us to do so.” (Laurel Heights, supra, 47 Cal.3d at p. 393.) We
    conclude the EIR adequately addressed the fire risks posed to Project and
    existing residents by the Project’s inherent injection of human activity, and
    that it included enough detail to enable those who did not participate in its
    preparation to understand and to consider meaningfully the issues raised by
    the Project. (Sierra Club, supra, 6 Cal.5th at p. 516.) We perceive no CEQA
    violation in County’s conclusion that the Project, in view of its fire-protection
    features detailed in the EIR, would not exacerbate the wildfire threat beyond
    the threshold of significance and thus would not expose people or structures
    to a significant risk of loss, injury, or death from wildfires.
    45
    C. Analysis of Evacuation Response Times and Mitigation
    Multiple documents in the administrative record evaluate evacuation
    scenarios for the Project and surrounding area. Both the EIR and fire plan
    address emergency access and evacuation routes. The EIR acknowledges
    that the Project has only one code-compliant evacuation access road that
    would be improved to three 12-foot-wide travel lanes for the benefit of both
    Project occupants and several existing off-site residences, thereby providing
    additional capacity for emergency access into and out of the area. The fire
    plan expands on the capacity: “The project’s traffic engineer states that each
    lane can effectively handle 1,900 vehicles per hour. There are roughly 75
    existing residential units that rely on Country Club Drive as their only
    means of ingress/egress. With the maximum unit site plan for HGVS, an
    additional 453 residences would be added. If a conservative estimate of three
    cars per household is used (the California average is roughly 2.7 vehicles—
    U.S. Census Bureau 2016), there would be a total of approximately 1,584
    vehicles seeking egress, assuming worst case. . . . . Conservatively assuming
    three vehicles per household are evacuating, [ ] with one lane, all existing and
    proposed residences could evacuate within one hour and still be
    approximately 316 vehicles below the capacity. The extra evacuation lane
    essentially doubles the capacity and provides a significant buffer of 2,216
    46
    vehicles per hour over what would otherwise be necessary.” (Italics added.)14
    Based on this supporting information, planning commission staff determined
    that “all existing and proposed residences could evacuate within
    approximately one hour.”
    Additionally, the EIR and fire plan address the availability of an
    alternative evacuation route connecting to another road (Johnston Road) in
    emergency situations “where people needed to be moved to the east and the
    primary access route (Country Club Drive) was not available.” The Project
    residents could not use the road for secondary access, but “the roadway would
    be available for use to connect to Johns[t]on Road (a public roadway to the
    east) . . . .” The Wildfire Risk Analysis likewise evaluates potential
    evacuation routes (Harmony Grove Road both east and westbound and
    Harmony Grove Village Parkway to the north) and considered whether
    “civilian’s escape [could] be compromised by fire movement along these
    routes.” It concludes there are four potential routes of escape, though
    Harmony Grove Road was potentially dangerous and Harmony Grove Village
    Parkway had “strong viability” as it “would only pose risk during extreme fire
    14     The fire plan gave additional analysis on the effect of the new lane: “It
    is not uncommon for it to require up to 90 minutes elapsed time from the
    time the decision is made to evacuate until all evacuees have left their
    occupancy of origin. . . . If only [one] lane was available for egress at [the
    Project], it would be anticipated that the evacuation protocol (decision to
    evacuate, notification to initiate Reverse 911, police respond, and completion
    of Reverse 911), would take roughly 45 minutes and moving the worst case
    1,828 vehicles out of the area would require just under one hour, for a total
    time of [one hour 45 minutes]. This time can be reduced significantly with a
    second lane, as proposed for this project. The evacuation protocol time
    remains constant at 45 minutes, but the movement of 1,828 vehicles on two
    lanes cuts the nearly [one] hour to 30 minutes, for a savings of roughly 30
    minutes for a complete evacuation when compared to the one lane scenario.”
    47
    behavior, and should be acceptable during lesser fire events.” The latter road
    was recommended by consultants and public safety staff evaluators as the
    alternate escape route. The Wildfire Risk Analysis reports that those
    evaluators “expressed comfort that the proposed fire code variance for the
    dead end access road was acceptable.”
    Both the fire plan and the Wildfire Risk Analysis further look to a
    “shelter-in-place” last resort option in the event of either high intensity
    wildfire threats to escape routes, the rapid onset of high intensity wildfire
    preventing escape opportunities, or “fires [that] originate in the Harmony
    Grove community.” They describe availability in a community park, within
    interior tract streets inside the larger Harmony Grove community, and a
    5,000 square-foot, 330 person-capacity community center stocked with
    emergency supplies.
    The Wildland Fire Evacuation Plan clarifies the fire plan and Wildfire
    Risk Analysis. It was prepared based on the County’s Operational Area
    Emergency Operations Plan, and found to be consistent with County and City
    evacuation planning standards. As indicated above, it considers a
    contingency option where evacuation routes are rendered unsafe, stating it
    may be advisable to direct evacuees to pre-planned temporary refuge
    locations, including their own homes if ignition-resistant and defensible, as
    were the homes in the Project. Both the San Marcos Station Commander and
    a CAL FIRE Unit Chief testified before the Board and agreed the Project’s
    evacuation plan was sufficient, the CAL FIRE Unit Chief describing the
    addition of a third lane as a “game changer.”15
    15    The San Marcos Station Commander said: “I reviewed this particular
    plan and the other ones for what infrastructure they have, the ability to move
    them, how many people there are, and I’m confident we can evacuate these
    people given the situation. Now, people want to talk about what particular
    48
    Stating that the Project assumed residents would evacuate through
    Country Club Road, the single entrance to the site, respondents below
    complained that the EIR “ignore[d] the gross danger posed by the Project’s
    evacuation scheme,” and posited, “If the single exit is blocked by fire,
    residents will have no escape.” They thus argued the evidence could not
    support a conclusion that the Project provided safe evacuation. Respondents
    asserted County “offers no explanation as to how the third lane will mitigate
    any harm to fleeing residents if the road is blocked by fire.” They argued
    there was no evidence of the efficacy of the Project’s shelter-in-place
    philosophy, which “offers nothing to current residents of the area who would
    be trapped in the same failed evacuation as Project residents.” Respondents
    argued the Project “facially violat[ed] the Fire Code” and the record lacked
    road we’ll use, how will this happen, what about the existing people. I first
    have to see the situation to tell you what I would do, but I’ve done it before.
    My agency has done it many times, and I think we've gotten very good in this
    county of how to evacuate people. I like the three-lane bridge. Choke points
    bridges [sic] are generally a problem when moving people. Three lanes give
    you alternatives. . . . Having three [lanes] is a route game changer as far as
    two lanes out and one still to get in. And then if there’s a problem in the
    roadway—a medical problem—something always happens—it still doesn’t
    completely tie up traffic. So I’ve looked at it. I’m confident. I understand
    there are residents that disagree with me. But I’ve been doing this for going
    on 28 years and I’ve been involved in every major fire and we’re able to get
    people out.”
    49
    substantial evidence that it would provide equivalent protection. The trial
    court essentially agreed with these points.16
    On appeal, respondents repeat these complaints, citing conclusions of
    expert Rahn that a best-case evacuation time would be one hour and thirty
    minutes, opinions of residents that it could take several hours, and asserting
    a fast-moving fire could “potentially block Country Club Drive and trap the
    entire community.” They argue the relevant analysis is “whether the Project
    would increase evacuation times and, if so, how substantial would those
    increases be,” but assert the EIR answers a different question and
    “summarily concludes” there will be sufficient egress in a fire emergency.
    They criticize County fire officials’ conclusion that Project fire safety
    measures meet the intent of code requirements, arguing “whether a dead end
    road within the new subdivision should receive a Fire Code variance is
    unrelated to whether the Project would impact evacuation times for existing
    residents.” They point to expert opinions that adding an additional lane to a
    single access road does not improve evacuation times, and argue the EIR is
    legally insufficient for failing to calculate evacuation times “to safe refuge
    16    The superior court found the Project did not comply with the Fire
    Code’s requirement that dead end roads be no more than 800 feet long. It
    acknowledged the Project would widen Country Club Drive, but rejected
    County’s conclusion that wildfire impacts were reduced to a level of
    insignificance by the Project’s multi-layered fire protection and evacuation
    measures: “The fact that the Fire Marshall concluded that the alternative
    measures are consistent with the intent of the Fire Code is not the same as
    saying the Project will not have a significant impact on evacuation times.
    Moreover, the fire safety measures largely consist of features that are
    intended to reduce the spread of fire such as using fire-resistant buildings
    and plants and installing fire hydrants, which have no relation to improving
    evacuation times. There is no evidence that the mitigation measures,
    including adding an extra travel lane, will be effective in the event that the
    sole evacuation route is blocked by fire.”
    50
    locations” beyond the Project by County’s own emergency operations plan,
    i.e., the function of “ ‘the number of vehicles that need to evacuate [divided]
    by the total roadway capacity . . . .’ ” They also point to an e-mail from the
    Rancho Santa Fe Fire Chief reviewing the evacuation plan that if fire “bumps
    [Country Club Drive], the road will be unusable.”
    We conclude the EIR’s discussion of evacuation routes and timing
    satisfies CEQA requirements. The EIR’s purpose is informational; to inform
    decisionmakers and the public of the basis on which the Board decided to
    approve the Project involving significant environmental effects. (See Laurel
    Heights, supra, 47 Cal.3d at p. 391; San Diego Citizenry Group v. County of
    San Diego, supra, 219 Cal.App.4th at p. 21.) An EIR must “consider and
    resolve every fair argument that can be made about the possible significant
    environmental effects of a project.” (Protect Historic Amador Waterways v.
    Amador Water Agency (2004) 
    116 Cal.App.4th 1099
    , 1109.) But where the
    agency determines a project impact is insignificant, an EIR need only contain
    a brief statement addressing the reasons for that conclusion. (§ 21100, subd.
    (c) [EIR need only “contain a statement briefly indicating the reasons for
    determining that various effects on the environment of a project are not
    significant and consequently have not been discussed in detail in the
    environmental impact report”]; see Guidelines, § 15128; Clover Valley
    Foundation v. City of Rocklin, supra, 197 Cal.App.4th at p. 243, citing in part
    Mira Mar Mobile Community v. City of Oceanside (2004) 
    119 Cal.App.4th 477
    , 492-493.) The EIR must be sufficiently complete and a good faith effort
    at full disclosure, not technically perfect. (Sierra Club, supra, 6 Cal.5th at p.
    522; Guidelines, § 15151.)
    Here, the relevant analysis is whether the Project will expose people
    and structures to a significant risk of wildfire, including whether it will
    51
    exacerbate the wildfire risks in the area or cause safety problems.
    (Guidelines, § 15126.2; Sierra Club, supra, 6 Cal.5th at p. 520.) Certainly
    there is a potential for the Project to impact safety related to protecting
    Project and other existing residents in the very high fire area. But the
    accompanying studies are anything but summary with respect to evacuation
    scenarios and alternatives. They sufficiently state “the reasons for
    determining that [the effects of the Project on safety relating to fire risk] are
    not significant . . . .” (§ 21100.)
    That respondents presented Rahn’s or other experts’ competing
    conclusions does not render the EIR inadequate. As we have pointed out, it is
    well established that “ ‘[disagreement] among experts does not make an EIR
    inadequate.’ ” (Laurel Heights, supra, 47 Cal.3d at p. 409; Guidelines,
    § 15151; see also Save Cuyama Valley v. County of Santa Barbara (2013) 
    213 Cal.App.4th 1059
    , 1069 [the substantiality of evidence is not undermined by
    the parties’ differing expert opinions].) And it is fundamental that this
    court’s “review does not encompass ‘ “the correctness of the EIR’s
    environmental conclusions, but only its sufficiency as an informative
    document. [Citation.] ‘We may not set aside an agency’s approval of an EIR
    on the ground that an opposite conclusion would have been equally or more
    reasonable. “Our limited function is consistent with the principle that ‘[t]he
    purpose of CEQA is not to generate paper, but to compel government at all
    levels to make decisions with environmental consequences in mind. CEQA
    does not, indeed cannot, guarantee that these decisions will always be those
    which favor environmental considerations.’ ” [Citation.] We may not, in sum,
    substitute our judgment for that of the people and their local representatives.
    We can and must, however, scrupulously enforce all legislatively mandated
    CEQA requirements.’ ” ’ ” (High Sierra Rural Alliance v. County of Plumas
    52
    (2018) 
    29 Cal.App.5th 102
    , 121; see Citizens of Goleta Valley v. Board of
    Supervisors (1990) 
    52 Cal.3d 553
    , 564; Laurel Heights, supra, 47 Cal.3d at
    p. 409 [reviewing court “ ‘does not have the duty of passing on the validity of
    the conclusions expressed in the EIR, but only on the sufficiency of the report
    as an informative document’ ”].)
    Respondents’ arguments concerning the analysis of evacuation times
    are unavailing. The EIR engaged in a calculation of the evacuation time on
    Country Club Drive using the capacity of vehicles per hour, in keeping with
    the formula set out in County’s Operational Area Emergency Operations
    Plan. Respondents complain that this calculation did not relate evacuation
    time all the way to safety or to safe refuge locations beyond the Harmony
    Grove Road intersection, but this challenges the methodology used and does
    not invalidate or render insufficient the analysis engaged in by the fire plan
    and the other studies. (Chico Advocates for a Responsible Economy v. City of
    Chico, supra, 40 Cal.App.5th at p. 851.) The evacuation plan stated that one
    of its objectives was to “[p]rovide for evacuation to appropriate transportation
    points, evacuation points, and shelters” and explains that the sheriff and
    incident commander coordinate with the responding fire agency to decide
    locations to use as temporary evacuation point which serve as safe zones for
    evacuees, listing such potential locations. We disagree that further
    quantification of evacuation time to these locations was needed. Again, the
    issue is whether the evacuation plan is sufficiently credible to be considered
    as part of the total evidence supporting County’s the agency’s decision.
    (Laurel Heights, supra, 47 Cal.3d at p. 409; Chico Advocates, at p. 851;
    Eureka Citizens for Responsible Government v. City of Eureka (2007) 
    147 Cal.App.4th 357
    , 372; see also National Parks & Conservation Assn. v.
    County of Riverside (1999) 
    71 Cal.App.4th 1341
    , 1362 [“an expert can make a
    53
    judgment on existing evidence, without further study, that a particular
    condition will have no significant impact”].) The matter relied upon by
    County for its findings includes “ ‘fact, a reasonable assumption predicated
    upon fact, or expert opinion supported by fact,’ which constitute substantial
    evidence to support [them].” (Eureka Citizens, at p. 373; § 21080, subd. (e).).
    Another premise of respondents’ argument is that there is only a single
    evacuation route that will leave residents stranded if blocked by fire. But the
    fire plan explains that another road out of the Project area is accessible to
    passenger vehicles. While it is not code-conforming secondary access, it is
    nevertheless available in an emergency situation “that require[s] moving
    people to the east and the primary access route (County Club Drive) [is] not
    available.” Further, the EIR and its supporting wildfire-related studies do
    not ignore a scenario where evacuation routes become unusable. The EIR
    and fire plan evaluate “the potential for impairment of a single road by
    vehicle congestion, condition of terrain, climatic conditions or other factors,”
    explaining that the Project adopted an alternative approach to implement
    54
    fire protection and evacuation measures that meets fire code requirements.17
    Widening Country Club Drive was not the sole method to lessen the risks.
    The Project clusters residential development so as to minimize proximity of
    homes to wildland fuels and create a defensible perimeter, and the Project
    proposes a contingency plan for moving people to temporary refuge locations
    such as homes or the club house. We do not pass on the correctness of the
    EIR’s conclusion that these and other fire protection measures detailed in the
    EIR exceed fire code requirements. To the extent respondents challenge
    those measures as inadequate or ineffective mitigation, we conclude the
    board was entitled to choose to believe the fire officials who signed off on
    them. (See Laurel Heights, supra, 47 Cal.3d at pp. 408-409.) The EIR’s
    conclusion that Project fire safety measures reduce fire hazards to a level of
    insignificance is supported by substantial evidence, namely the fire-related
    expert studies. They are not so “clearly inadequate and unsupported” as to
    be entitled to no judicial deference. (Id. at p 409, fn. 12.)
    17     Because fire officials determined that compliance with the dead end
    road length requirements was impracticable, they granted a modification
    from the dead end road fire requirements contained in the San Diego County
    Consolidated Fire Code (at the time, § 503.1.3, now § 503.2.5.1) based on the
    fire-protection features of the Project. The fire plan explains: “When the
    strict application of the requirements set forth in [Consolidated Fire Code]
    Section 503.1.3 is impracticable, . . . the fire code official may grant a
    modification from such requirements. A modification may be granted when
    the modification is in compliance with the intent and purpose of the code and
    such modification does not lessen health, life, and fire safety requirements.”
    (Citing Consolidated Fire Code, § 96.1.104.8 [relating to modifications].) The
    fire plan states “the [P]roject is providing code-exceeding measures in various
    aspects of fire protection and safety that, combined, result in a highly
    defensible community, offers a means of equivalent egress, as well as
    contingency planning if evacuation from the site is considered unsafe.”
    55
    IV. EIR’s Analysis of Consistency with Air Quality and Land Use Planning
    Documents
    A. The RAQS
    The RAQS outlines the San Diego Air Pollution Control District’s plans
    and control measures designed to attain State air quality standards for
    ozone. It relies on growth projections used by SANDAG, and includes
    projections for residential, commercial, industrial and recreational land uses
    contained in County’s General Plan. The Project proposes to increase the
    total number of dwelling units from the 220 units allowed under the General
    Plan to 453, causing the Project to exceed the dwelling units proposed in the
    RAQS. The EIR concluded that the inconsistency with the current RAQS
    caused a significant cumulative impact. The EIR nevertheless concludes that
    while the Project is not compliant with the RAQS and has a significant
    cumulative impact in that respect, it is in compliance with federal and state
    ambient air quality standards and would not result in significant air quality
    impacts with respect to the Project’s construction and operational-related
    emissions of ozone precursors or criteria air pollutants, making it unlikely
    that the increased density would interfere with goals for improving air
    quality in the San Diego air basin.
    In approving the Project, County acknowledged that the Project was
    not accounted for in the current RAQS, but found “County has not achieved
    buildout intensity levels assumed under the RAQS . . . , and this, in
    conjunction with the Project’s less than significant emissions, is not expected
    to result in obstruction of the implementation with [sic] local air quality
    plans. The lack of inclusion of the Project in the RAQS . . . is identified as a
    significant conflict relative to plan non-conformance. The provision of
    housing information (M-AQ-1) would assist SANDAG in revising the housing
    56
    forecast and therefore assist [the Air Pollution Control District] in revising
    the RAQS . . . ; however, until the anticipated growth is included in the
    emission estimates of the RAQS . . . , the direct impacts would remain
    significant and unavoidable.” It stated that the mitigation measure imposed
    on the Project as a condition of approval required County to “provide a
    revised housing forecast to SANDAG that results in revisions to the
    population and employment projections used by the [Air Pollution Control
    District] in updating the RAQS . . . , which will accurately reflect anticipated
    growth due to the Proposed Project.”18
    18     County’s findings refer to both the RAQS and the State
    Implementation Plan (SIP), both of which “ ‘provide the region’s
    documentation for improving air quality’ ” and are updated on a triennial
    basis. (San Diego Navy Broadway Complex Coalition v. California Coastal
    Commission (2019) 
    40 Cal.App.5th 563
    , 602.) County’s supporting rationale
    for its finding explains: “Although the County has not achieved buildout
    intensity levels assumed under the RAQS and SIP, the conflict with the
    current RAQS and SIP resulting from the density proposed for the . . . Project
    being inconsistent with current General Plan and SANDAG housing forecasts
    is conservatively identified as representing a significant impact as a planning
    document conflict.” It stated that the housing forecasts are provided by
    SANDAG to the Air Pollution Control District, which prepares the RAQS and
    Ozone Attainment Plan and provides those to the state Air Resources Board,
    and that “[t]hese are ongoing and routine programs that are beyond the
    purview of the County to manage and direct.” The County stated that
    “[u]pon its inclusion and incorporation into regional modeling, this impact
    will be addressed.” “Thus, future updates to the RAQS . . . would account for
    the Project’s expected population. . . . Once a future update that is reflective
    of the Project’s planned increase in intensity on site would occur, the Project
    would then be consistent with the RAQS. While identified as a significant
    plan consistency impact until an update is completed, the Project emissions
    of criteria pollutants do not exceed threshold criteria, and there would be no
    significant impact to human health or the environment from the Project’s
    emissions.”
    57
    In challenging the EIR on this point, respondents argued County
    should have described the increase in air pollutant emissions that would
    result from the Project’s unplanned growth, and the EIR thus failed to inform
    the public and decisionmakers of the severity of the air quality impact. The
    trial court found fault with County’s finding, ruling that the information on
    which it relied for its population growth conclusions (a staff report and an e-
    mail with statistical charts pertaining to San Diego’s regional needs housing
    assessment) must have been explicitly incorporated into the EIR. It ruled the
    “EIR should have actually analyzed the conflicts with RAQS. By not doing
    so, the County failed to proceed in the manner required by CEQA.”
    Appellant contends the EIR properly evaluated the Project’s impact on
    the RAQS, which establishes a population-based air quality strategy. It
    characterizes the EIR as finding a “paper impact, not a physical one”
    requiring only the eventual inclusion of the population information into the
    regional plan, an approach this court upheld in San Diego Navy Broadway
    Complex Coalition v. California Coastal Commission (2019) 
    40 Cal.App.5th 563
     (San Diego Navy). In San Diego Navy, the proposed mitigation for a
    project’s inconsistency with growth projections in a regional plan was for the
    regional air district to amend the plan. (Id. at pp. 602-603.)
    Reviewing County’s determination directly as we must (Vineyard Area
    Citizens, 
    supra, 40
     Cal.4th at p. 427), we hold the County did not err in its
    findings, and that its treatment of consistency with the RAQS (analyzed as a
    “planning document conflict”) was adequate. We agree County’s finding is
    akin to that of the Coastal Commission in San Diego Navy, supra, 
    40 Cal.App.5th 563
     that a Port District master plan amendment would
    “ ‘ensure consistency with San Diego Air Pollution Control District’s . . .
    requirements upon amendment of the Air District’s growth projections to
    58
    reflect the increased growth anticipated in the Port Master Plan area.’ ” (Id.
    at p. 602.) In that case, the EIR described the role of the Air Pollution
    Control District and its RAQS, explaining that because the project there
    would result in greater density, it would be “inconsistent with the RAQS . . .
    until [it and the State Implementation Plan] were updated.” (Id. at p. 603.)
    The “proposed mitigation required the Port and City to request that the Air
    [Pollution Control] District amend growth assumptions to incorporate the
    Project prior to the next triennial review.” (Ibid.) “The Port’s Coastal
    consistency analysis found that the Project would be inconsistent with the
    RAQS and SIP until they were revised in the next review.” (Ibid.) In part
    based on the presumption that an agency carries out its official obligation
    absent contrary evidence (Evid. Code, § 664), we upheld the Commission’s
    finding: “As reflected in the EIR and Port [District] analysis, there was a
    plan to ensure air quality consistent with the Air [Pollution Control]
    District’s existing review obligations, notwithstanding questions about when
    it would occur. The [Coastal] Commission could reasonably find that the Air
    [Pollution Control] District would comply with its duties and account for
    Project impacts in its next review cycle, thus minimizing any substantial
    adverse environmental impact.” (San Diego Navy, at p. 603.) We rejected the
    challenge that the Coastal Commission “approve[d] polluting development
    and uses just because another regulatory agency has jurisdiction over
    pollution,” stating the Coastal Commission “neither allowed polluting
    development, nor let the Air [Pollution Control] District decide whether to do
    so. Rather, it determined that the Air [Pollution Control] District’s review
    process would account for emissions increases from the Project.” (Ibid.)
    The same reasoning applies here, where the Project’s inconsistency
    with the RAQS planning document—its addition of dwelling units beyond the
    59
    plan’s projections—will be resolved when SANDAG updates its growth
    projections and provides them to the Air Pollution Control District, which will
    then prepare and update the RAQS and its modeling as it is required to do.
    (See San Diego Navy, supra, 40 Cal.App.5th at p. 603, fn. 31 [pointing out the
    law requires the Air Pollution Control District to regularly revise and update
    its plans].)
    Respondents argue that the EIR was insufficient because it did not
    adequately analyze the Project’s air quality impacts. They characterize the
    EIR as finding that the conflict with RAQS would result in significant air
    quality impacts. As to actual air quality impacts stemming from the Project,
    the argument is belied by the EIR, which analyzed the Project’s construction,
    operational, and cumulative impacts on air quality under relevant guidelines
    for significance and determined them to be less than significant.
    Respondents did not challenge those air quality impact findings by a cross-
    appeal. The portion of the EIR cited by respondents for their proposition
    addresses the “[c]onformance to the RAQS” as a planning document, finds
    that lack of conformance or inconsistency to be a significant impact, and
    concludes it is unmitigated, explaining that the County “shall provide a
    revised housing forecast to SANDAG to ensure that any revisions to the
    population and employment projections used by the [San Diego Air Pollution
    Control District] in updating the RAQS and SIP will accurately reflect
    anticipated growth due to the . . . Project.” An EIR must “discuss any
    inconsistencies between the proposed project and applicable . . . regional
    plans.” (Guidelines, § 15125, subd. (d); Golden Door, supra, 50 Cal.App.5th
    at p. 540.) The EIR performed this function.
    Respondents further argue the EIR failed to provide information about
    the nature and scope of the inconsistency beyond stating the increase in
    60
    dwelling units, or quantify the cumulative increase in air pollutant emissions
    from the Project. They say the EIR acknowledges “that more analysis was
    needed ‘to determine if that Project and the surrounding projects exceeded
    the growth projections used in the RAQS for the specific subregional area.’ ”
    But this misreads the EIR; the cited paragraph makes a generic statement
    about the consequences of projects’ proposed development and consistency
    with the RAQS, it is not a statement about the Project at hand, which it
    determined was inconsistent and unmitigated pending an update to the
    RAQS growth projections. As stated, the Guidelines state that an EIR shall
    discuss any inconsistencies between the proposed project and applicable
    regional plans. But CEQA and the Guidelines do not require an agency to
    make any particular finding with respect to the project’s consistency or
    inconsistency with such plans. “ ‘CEQA requires an EIR to reflect a good
    faith effort at full disclosure; it does not . . . require an analysis to be
    exhaustive.’ ” (Chaparral Greens v. City of Chula Vista (1996) 
    50 Cal.App.4th 1134
    , 1145; see also Sierra Club, supra, 6 Cal.5th at p. 515.) We conclude the
    EIR adequately discussed the Project’s inconsistency with the RAQS.
    B. San Diego Forward
    We discussed the San Diego Forward regional plan (at times referred to
    in the EIR as the Regional Plan or 2015 Regional Plan) and its background in
    Golden Door. (Golden Door, supra, 50 Cal.App.5th at pp. 533-537.) San
    Diego Forward resulted from the merging of earlier growth and
    transportation plans (the Regional Comprehensive Plan and the Regional
    Transportation Plan with its required Sustainable Communities Strategy,
    required by the Sustainable Communities and Climate Protection Act, Senate
    Bill No. 375). (See Gov. Code, § 65080, subd. (b)(2)(B); Golden Door, at p.
    534; Sacramentans for Fair Planning v. City of Sacramento (2019) 37
    
    61 Cal.App.5th 698
    , 718-719 (Sacramentans).) It does not regulate land use,
    however; its purpose is to provide direction and guidance on future regional
    growth and transportation patterns. (Golden Door, supra, 50 Cal.5th at pp.
    534-535 [Sustainable Communities Strategy establishes how land uses and
    transportation projects will achieve CARB’s greenhouse gas reduction
    targets, including a forecasted development pattern for the region; it is not
    the equivalent of a general plan, and does not require local government to
    take particular actions in planning, regulating and permitting land
    development]; Sacramentans, at pp. 723, 724 [sustainable communities
    strategy “is ‘a forecasted development pattern for the region’ which, if
    implemented by [the designated planning organization], will reduce
    greenhouse gas emissions from automobiles and light trucks that would
    otherwise result from new development”].) San Diego Forward serves as the
    “blueprint for how the San Diego region will grow and how SANDAG will
    invest in transportation infrastructure to provide more choices, strengthen
    the economy, promote a healthy environment, and support thriving
    communities.” It is intended to establish a planning framework to “increase
    the region’s sustainability and encourage ‘smart growth while preserving
    natural resources and limiting urban sprawl.’ ” It is also intended to
    encourage County to increase residential and employment concentrations in
    areas with the best existing and future transit connections, and to preserve
    important open spaces. Its principles are designed to “strengthen the
    integration of land use and transportation.”19
    19    More specifically, the EIR states: “At the core of the [San Diego
    Forward] Regional Plan is a Sustainable Communities Strategy that charts a
    course towards lowering [greenhouse gas] emissions and includes the
    following five building blocks: [¶] • A land use pattern that accommodates
    our region’s future employment and housing needs, and protects sensitive
    62
    The EIR discussed the Project’s consistency with San Diego Forward
    both with respect to greenhouse gas emissions, which that plan seeks to
    reduce (see Golden Door, supra, 50 Cal.App.5th at p. 535; Sacramentans,
    supra, 37 Cal.App.5th at p. 723), and also with regard to land use impacts.
    As to the former, the EIR states in part that though the Project increased
    density of residential land uses, it included design features to reduce
    greenhouse gas emissions that support San Diego Forward’s goals, including
    a photovoltaic solar system, electric vehicle charging stations, low-flow water
    features, and drought tolerant landscaping. It stated that “[w]hile the
    Project site was not identified for development in SANDAG’s San Diego
    Forward 2020 . . . forecasted development pattern maps, the Project site
    location was identified for development consistent with the 2011 General
    Plan in the SANDAG 2035 forecast development pattern map, and is . . . in-
    line with the [Sustainable Communities Strategy greenhouse gas] benefits as
    the Project would support and/or provide a range of housing types, services
    and jobs in a compact pattern of development located within 0.5 mile (a 10-
    minute walk) of commercial and civic facilities, and is located near to transit
    stops and employment centers.” According to the EIR, SANDAG’s average
    trip length is 7.9 miles, and the average distance for Project trips was
    calculated to be 7.88 miles. It stated the Project would reduce the size of
    habitats, cultural resources, and resource areas. [¶] • A transportation
    network of public transit, Managed Lanes and highways, local streets,
    bikeways, and walkways built and maintained with reasonably expected
    funding. [¶]• Managing demands on our transportation system . . . in ways
    that reduce or eliminate traffic congestion during peak periods of demand. [¶]
    • Managing our transportation system . . . through measures that maximize
    the overall efficiency of the transportation network. [¶] • Innovative pricing
    policies and other measures designed to reduce the number of miles people
    travel in their vehicles, as well as traffic congestion during peak periods of
    demand.”
    63
    required infrastructure improvements and the number and length of car
    trips, while increasing community livability and preserving open space.
    As to land use, the EIR pointed out additionally the Project has a
    variety of housing densities and levels of affordability; it would connect the
    Harmony Grove Village commercial area with the Project’s residential areas,
    park and commercial uses so as to contribute to the pursuit of healthy
    lifestyle choices (walking and biking) promoted by the regional plan; it would
    cluster development in portions of the site to preserve a large area of
    permanent open space; and it would enhance water resources through
    enhancements to Escondido creek. The EIR stated the Project would not be
    in conflict with San Diego Forward’s objectives, and potential impacts
    associated with the regional plan and policies would be less than significant.
    It stated “[t]he Project could be included in the next update of both the
    Sustainable Communities Strategy and the [regional transportation plan] as
    contained in San Diego Forward.” In responses to comments related to the
    Project’s increased density, County cited and incorporated by reference a San
    Diego Regional Chamber of Commerce website containing housing
    information showing it was only projected to issue building permits for 26
    percent of the over 22,000 units allocated to it, and thus was behind in
    projected housing. It explained that the issue was where the housing would
    be located, and that the analysis of the Project’s efforts to reduce vehicle
    emissions through design, location and minimization of off-site vehicle trips
    complied with County’s efforts to reduce sprawl and associated emissions.
    County stated the Project’s exclusion from the forecasted land use
    development patterns contained in the 2050 regional transportation plan was
    not dispositive of the Project’s consistency with Senate Bill No. 375, because
    sustainable communities strategies do not control or regulate land use. It
    64
    stated it was appropriate and reasonable to consider the Project’s consistency
    with the Act’s policies as well as the 2050 regional plan’s policies and its
    relationship to the greenhouse gas reduction targets identified by the Air
    Resources Board.
    In their trial brief, respondents contended the EIR was incorrect in its
    conclusion and unsupported by substantial evidence; they pointed out the
    EIR admitted the Project site was not identified for development in the San
    Diego Forward plan, and characterized it as a “plain inconsistency between
    the Project and San Diego Forward, again based on County’s prior
    determination that the Project site was not suitable for dense development.”
    Characterizing San Diego Forward as a “land use plan,” they suggested the
    EIR was inadequate for failing to consider the consistency of the Project’s
    land use with the patterns set out in San Diego Forward. The trial court
    ruled County had not shown consistency with the plan; that the EIR did not
    contain evidence or information to support County’s assertions that
    development and population growth were less than anticipated such that San
    Diego Forward could accommodate the Project.20
    Appellant contends substantial evidence supports County’s finding that
    any impact was only on “paper” as with the RAQS. It asserts the trial court
    was incorrect in concluding the EIR omitted evidence of any population
    shortfall; that the information appeared in County’s responses to comments,
    where County stated it was only projected to issue building permits for 26
    percent of the 22,412 units it had planned by 2020. It also contends that
    20    Respondents did not argue that the Project’s impact with regard to
    greenhouse gas emissions rendered it inconsistent with San Diego Forward
    (nor do they make such an argument on appeal); thus any such claim is
    waived. (South of Market Community Action Network v. City and County of
    San Francisco (2019) 
    33 Cal.App.5th 321
    , 354.)
    65
    applying the proper standard—whether the Project would obstruct San Diego
    Forward’s implementation—we must conclude the Project is consistent: the
    EIR evaluated the associated land uses; reflects County’s effort to move
    future development closer to cities, shopping and employment centers;, shows
    the Project is consistent with vehicle mileage projections; and encourages
    local walking in keeping with the plan.
    An EIR’s discussion of a project’s consistency with regional plans
    includes regional transportation plans, as San Diego Forward is here.
    (Golden Door, supra, 50 Cal.App.5th at p. 540.) We presume the EIR is
    adequate, and the plaintiff in a CEQA action has the burden to prove
    otherwise. (Stop Syar Expansion v. County of Napa, supra, 63 Cal.App.5th at
    p. 450.) Thus, in reviewing the EIR’s finding for substantial evidence, “ ‘we
    presume [County’s] findings are correct and resolve all conflicts and
    reasonable doubts in favor of the findings.’ ” (Golden Door, supra, 50
    Cal.App.5th at p. 540.) “Substantial evidence in a CEQA case is ‘enough
    relevant information and reasonable inferences from this information that a
    fair argument can be made to support a conclusion, even though other
    conclusions might also be reached. . . . Substantial evidence shall include
    facts, reasonable assumptions predicated upon facts, and expert opinion
    supported by facts.’ ” (Ibid.) We accord great deference to a proper
    consistency finding, and reverse it only if “no reasonable person could have
    reached the same conclusion.” (Stop Syar Expansion, supra, 63 Cal.App.5th
    at p. 461; Endangered Habitats League, Inc. v. County of Orange (2005) 
    131 Cal.App.4th 777
    , 782.) Our “ ‘ “role ‘is simply to decide whether the [County]
    officials considered the applicable policies and the extent to which the
    proposed project conforms with those policies.’ ” ’ ” (Stop Syar Expansion, at
    p. 461.)
    66
    We conclude County officials did so here. We cannot say respondents
    met their burden below to show that County unreasonably determined the
    Project was consistent with San Diego Forward based on all of the evidence
    in the administrative record, which includes County’s responses to comments.
    (Accord, Cleveland National Forest Foundation v. San Diego Assn. of
    Governments (2017) 
    3 Cal.5th 497
    , 516-517 [lead agency’s response to
    comments is an integral part of the EIR]; Guidelines, § 15150, subd. (a) [EIR
    may incorporate publicly available documents by reference].) Stated another
    way, it is not the case that no reasonable person could conclude the Project is
    compatible with, and does not frustrate. the plan’s goals and objectives.
    (Holden v. City of San Diego (2019) 
    43 Cal.App.5th 404
    , 412.)
    Contrary to respondents’ argument below, San Diego Forward with its
    Sustainable Communities Strategy is not a land use plan, nor does it
    supersede land use authority, rather, it is a blueprint or a “reference
    document” evaluating the intersection of land use and transportation
    patterns with the target of reducing greenhouse gas emissions. The omission
    of the Project’s increased density in San Diego Forward’s forecasts does not
    create inconsistency if the County reasonably found the Project otherwise
    concentrates its growth appropriately and designs its community to better
    integrate land use and transportation so as to make the region more
    environmentally sustainable, as is the regional plan’s goal. Further, even if
    the Project’s density was critical to the question of consistency, the County’s
    San Diego Regional Chamber of Commerce statistics show issued building
    permits for County were much lower than County’s allocated units (only 26
    percent of allocated units), such that the projected housing in the Project
    would not adversely impact the plan’s goals concerning the placement of
    communities, traffic congestion and other transportation-related issues.
    67
    Because the EIR did not violate CEQA in determining that the Project
    was consistent with San Diego Forward, its analysis was adequate. While, as
    stated above, an EIR must address any inconsistencies with applicable
    regional plans, it is not required to undertake an analysis if the project is
    consistent with the relevant plan. (Stop Syar Expansion v. County of Napa,
    supra, 63 Cal.App.5th at p. 460; The Highway 68 Coalition v. County of
    Monterey (2017) 
    14 Cal.App.5th 883
    , 894; North Coast Rivers Alliance v.
    Marin Municipal Water Dist. Bd. of Directors (2013) 
    216 Cal.App.4th 614
    ,
    633 [CEQA does not require an EIR to provide a detailed discussion of a
    project’s consistency with a plan].)
    V. Consistency with General and Community Plans
    In approving the Project, County found the Project “is consistent with
    the San Diego County General Plan and the San Dieguito Community Plan
    in that the goals, objectives and policies of all the elements of the plans have
    been or will be met.” Respondents argued below that the Project was facially
    inconsistent with policies in both of these plans—a General Plan policy for
    affordable housing and a Community Plan on-site septic system requirement
    for new development, and thus County’s approval is invalid.
    A. Standards for Evaluating Consistency
    General land use plans have been described as the “ ‘constitution for all
    future developments’ ” within a county. (Citizens of Goleta Valley v. Board of
    Supervisors, supra, 52 Cal.3d at p. 570.) Typically, general and specific plans
    set forth policies and goals rather than specific mandates or prohibitions.
    (Holden v. City of San Diego, supra, 43 Cal.App.5th at p. 411.) For broad
    policies and goals, a project need not conform perfectly to be consistent.
    (Spring Valley Lake Assn. v. City of Victorville (2016) 
    248 Cal.App.4th 91
    ,
    100; Families Unafraid to Uphold Rural etc. County v. Board of Supervisors
    68
    (1998) 
    62 Cal.App.4th 1332
    , 1341 (FUTURE).) “ ‘[G]eneral and specific plans
    attempt to balance a range of competing interests. It follows that it is nearly,
    if not absolutely, impossible for a project to be in perfect conformity with each
    and every policy set forth in the applicable plan . . . . It is enough that the
    proposed project will be compatible with the objectives, policies, general land
    uses and programs specified in the applicable plan.’ ” (Holden, at p. 412.)
    A project will nevertheless be “inconsistent if it conflicts with a general
    plan policy that is fundamental, mandatory, and clear.” (Endangered
    Habitats League, Inc. v. County of Orange (2005) 
    131 Cal.App.4th 777
    , 782;
    see also FUTURE, supra, 62 Cal.App.4th at p. 1338.) “ ‘[T]he nature of the
    policy and the nature of the inconsistency are critical factors to consider’ ”
    because “general consistencies with plan polices cannot overcome ‘specific,
    mandatory and fundamental inconsistencies’ with plan policies.” (Clover
    Valley Foundation v. City of Rocklin, supra, 197 Cal.App.4th at p. 238;
    Spring Valley Lake Assn. v. City of Victorville, supra, 248 Cal.App.4th at p.
    101; FUTURE, at p. 1341.) In such cases, a contrary consistency finding will
    be unsupported by substantial evidence. (See San Francisco Tomorrow v.
    City and County of San Francisco (2014) 
    229 Cal.App.4th 498
    , 518.)
    A public agency’s determination that a development approval is
    consistent with its general plan is “fundamentally adjudicatory.” (Orange
    Citizens for Parks & Recreation v. Superior Court (2016) 
    2 Cal.5th 141
    , 155.)
    “In such circumstances, a consistency determination is entitled to deference
    as an extension of a planning agency’s ‘ “unique competence to interpret [its]
    policies when applying them in its adjudicatory capacity.” ’ [Citation.]
    Reviewing courts must defer to a procedurally proper consistency finding
    unless no reasonable person could have reached the same conclusion.” (Ibid.;
    see Holden v. City of San Diego, supra, 43 Cal.App.5th at p. 412.)
    69
    B. The Project Is Inconsistent with County’s Goals and General Plan Policies
    for Affordable Housing
    As indicated, the vision of County’s General Plan includes a “village”
    model as one choice for its communities. The General Plan describes such
    villages as containing “a mix of housing types that are located near retail
    businesses, employment, schools, parklands, churches, and public
    institutions” and states, the “villages will vary in density and character that
    will provide affordable housing choices . . . .” Affordable housing is further
    addressed in the General Plan’s Housing Element. It states at the outset
    that the State identifies “provision of decent and affordable housing for every
    Californian as a statewide goal.” The General Plan explains that under the
    state Housing Element Law, its housing element “must contain local
    commitments to . . . [¶] . . . [¶] [a]ssist in the development of adequate
    housing to meet the needs of lower and moderate income households.” The
    General Plan lists as a “Guiding Principle[ ]” of “particular significance” the
    “objective[ ] of improving housing affordability.”21
    The General Plan’s housing element recites its goal of having “[a]
    housing stock comprised of a variety of housing and tenancy types at a range
    of prices, which meets the varied needs of existing and future unincorporated
    County residents, who represent a full spectrum of age, income, and other
    21    The state “Housing Element Law,” overviewed in California Building
    Industry Assn. v. City of San Jose (2015) 
    61 Cal.4th 435
    , 444-445, in part
    provides that “ ‘[l]ocal and state governments have a responsibility to use the
    powers vested in them to facilitate the improvement and development of
    housing to make adequate provision for the housing needs of all economic
    segments of the community[.]’ ” (California Building Industry Assn., at p.
    445, quoting Gov. Code, § 65580, italics omitted.) The court in California
    Building Industry set out the California law definitions of extremely low to
    moderate income households, which apply absent applicable federal
    standards. (Id. at p. 447, fn. 3.)
    70
    demographic characteristics.” One of several supporting policies is housing
    element policy H-1.9, which reads: “Affordable Housing through General
    Plan Amendments. Require developers to provide an affordable housing
    component when requesting a General Plan amendment for a large-scale
    residential project when this is legally permissible.”22
    County planning department staff acknowledged that based on the
    Project’s density of eight units per acre, it was “not defined as moderate to
    low income housing by the . . . General Plan.” Staff found the Project
    nevertheless consistent with the General Plan, and particularly policy H-1.9,
    even though the Project required a general plan amendment but did not have
    an affordable housing component: “The project does not conflict with this
    policy. Consistent with other General Plan Amendment projects approved by
    the County Board of Supervisors since the adoption of the General Plan on
    August 3, 2011, the project does not include an affordable housing component
    as the County of San Diego does not have an inclusionary housing ordinance
    or other legal mechanism to require affordable housing units.”
    The superior court disagreed: “County provides no authority that an
    ordinance is required before it can require affordable housing. Since the
    County has not shown that it is legally precluded from requiring developers
    to provide an affordable housing component when requesting a [general plan
    amendment], its failure to do so here is inconsistent with Policy H-1.9.”
    Appellant contends County’s General Plan consistency determination is
    entitled to deference; that policy H-1.9 is not fundamental, mandatory or
    22    Other policies include, for example, “[s]upport[ing] the design of large-
    scale residential developments (generally greater than 200 dwelling units) in
    Villages that include a range of housing types, lot sizes, and building sizes”;
    and “[p]romot[ing] large-scale residential development in Semi-Rural that
    include a range of lot sizes to improve housing choice.”
    71
    clear, but one of many policies that must be balanced together with one
    another. It points out the policy “refers to a Project’s ‘component’ but does
    not specify a number of units or price level.” According to appellant, “[t]he
    Project contains a naturally affordable component: smaller units as part of a
    range of housing sizes.” It points to County staff’s assertion that “ ‘[i]n terms
    of housing affordability, multi-family units as well as smaller lots and house
    sizes tend to be more affordable’ ” and explains the project will have a variety
    of sizes and lots, including a 1,462 square foot lot with 800 square feet of
    living space. Appellant argues this satisfies the General Plan and its housing
    element. Additionally, appellant maintains that placing an affordable
    housing condition on the Project without an inclusionary housing ordinance
    would have required County to impose a specific condition on a subdivision
    map, which was “not legally permissible” as both unconstitutional and in
    violation of the Subdivision Map Act.
    As we have stated, we give “great deference” to this finding of
    consistency; we simply decide “ ‘ “whether the . . . officials considered the
    applicable policies and the extent to which the proposed project conforms
    with those policies.” ’ ” (Holden v. City of San Diego, supra, 43 Cal.App.5th at
    p. 412.) We may reverse the finding only if it is based on evidence from which
    no reasonable person could have reached the same conclusion. (Ibid.)
    However, we conclude that County unreasonably found that the Project,
    which it acknowledged did not include any affordable housing within the
    meaning of the General Plan, furthered the General Plan’s vision, policies
    and objectives of providing affordable housing choices in villages (villages
    “that will provide affordable housing choices,” italics added). This is
    particularly evident when policy H-1.9 of the General Plan requires
    developers seeking a general plan amendment, as appellant is here, to
    72
    include an affordable housing component when legally permissible.23 The
    word “require” involves “ ‘a compulsion or command upon (as a person) to do
    something.’ ” (Sully-Miller Contracting Co. v. California Occupational Safety
    & Health Appeals Bd. (2006) 
    138 Cal.App.4th 684
    , 695.) The policy is in
    keeping with County’s housing element’s obligation under the State Housing
    Law (Gov. Code, § 65583, subd. (c)(2)) to contain “local commitments” to
    assist in meeting the needs of lower and moderate income households. The
    General Plan provides that its policies are “written to be a clear statement of
    policy but also to allow flexibility when it comes to implementation [and]
    must be balanced with one another . . . .” But when the policies and goals
    include a commitment to increase the supply of affordable housing for large
    scale residential projects like the Project here, the absence of any affordable
    housing component is inconsistent and nonconforming to those policies.
    We further hold County unreasonably concluded it could not legally
    impose a development condition for an affordable housing component without
    a duly enacted inclusionary housing ordinance. In our view, that question
    presents a purely legal issue requiring no deference to County’s
    determination. (Protecting Our Water and Environmental Resources v.
    County of Stanislaus (2020) 
    10 Cal.5th 479
    , 495 [“If the agency’s
    determination ‘involves pure questions of law, we review those questions de
    23    We read the “when this is legally permissible” clause to refer to the
    state of the law in 2011 when the General Plan was updated, at which time it
    was unsettled whether an affordable housing requirement was an “exaction”
    for which a local government would have been required to pay just
    compensation under the takings clause. That controversy was settled in 2015
    when the California Supreme Court decided California Building Industry
    Assn. v. City of San Jose, supra, 
    61 Cal.4th 435
    , and upheld the validity of a
    municipality’s affordable housing regulation (an inclusionary housing
    ordinance) as not an exaction, but a permissible regulation of land use under
    the exercise of the local agency’s police power. (Id. at pp. 457, 461.)
    73
    novo’ ”].) The position was unavailing in view of the primacy of the General
    Plan—the adoption of which is a legislative act—on land use and
    development. (See Orange Citizens for Parks & Recreation v. Superior Court
    (2016) 
    2 Cal.5th 141
    , 152-153; DeVita v. County of Napa (1995) 
    9 Cal.4th 763
    ,
    773; Molloy v. Vu (2019) 
    42 Cal.App.5th 746
    , 758.) The general plan is the
    “ ‘ “constitution” for future development’ ” within a city or county “located at
    the top of ‘the hierarchy of local government law regulating land use.’ ”
    (DeVita, at p. 773; Carson Harbor Village, Ltd. v. City of Carson (2015) 
    239 Cal.App.4th 56
    , 62 [general plan is the basic charter governing the direction
    of future land use within a locality].) Ordinances are subsidiary enactments
    that must be consistent with the general plan or else be invalid. (Orange
    Citizens, at p. 153; Lesher Communications, Inc. v. City of Walnut Creek
    (1990) 
    52 Cal.3d 531
    , 541 [“The general plan is the charter to which the
    [zoning and development code] must conform”; “The tail [the planning and
    zoning law] does not wag the dog [the general plan]”]; Denham, LLC v. City of
    Richmond (2019) 
    41 Cal.App.5th 340
    , 353.)
    Appellant asserts an affordable housing component for this Project
    would be legally impermissible in the absence of an ordinance because
    “County would have had to craft a specific condition for this Project based on
    how the Project would create a problem whose solution was such a condition,”
    rendering the condition unconstitutional. For this proposition, appellant
    cites California Building Industry Assn. v. City of San Jose, supra, 61 Cal.4th
    at pages 470-471, where the court rejected the building industry’s argument
    that San Remo Hotel L.P. v. City And County Of San Francisco (2002) 
    27 Cal.4th 643
     held that inclusionary housing conditions would be valid only if
    they “ ‘bear a reasonable relationship, in both intended use and amount, to
    the deleterious public impact of the development.’ ” (California Building
    74
    Industry, at p. 471, italics omitted.) The court in California Building
    Industry explained that San Remo involved development mitigation fees,
    unlike the housing ordinance at issue in that case. We perceive no support
    for appellant’s constitutional challenge in the cited portion of California
    Building Industry.
    We finally reject appellant’s assertion, based on Government Code
    section 66474.2,24 that a specific affordable housing condition would violate
    the Subdivision Map Act. The cited Map Act provision requires a local
    agency to apply policies in effect, as the General Plan policies have been since
    2011, when an application for tentative map is complete.
    C. Community Plan’s Septic Requirement
    The Community Plan separately describes the communities of
    Harmony Grove and Elfin Forest. It contains a map showing Elfin Forest in
    relation to the boundary of Harmony Grove,25 and explains that Elfin Forest
    is “surrounded by” Harmony Grove to the east. The Community Plan states
    that Elfin Forest is developed with custom single-family homes that “must be
    located on lots no smaller than two acres and must utilize septic systems for
    sewage management.” In keeping with this requirement, the Community
    Plan’s policy LU-1.1.3 provides: “Any and all development in Elfin Forest
    24    Government Code section 66474.2 provides in part: “(a) Except as
    otherwise provided in subdivision (b) or (c), in determining whether to
    approve or disapprove an application for a tentative map, the local agency
    shall apply only those ordinances, policies, and standards in effect at the date
    the local agency has determined that the application is complete pursuant to
    Section 65943 of the Government Code.” (Italics added.)
    25    The plan states that “[t]he community of Elfin Forrest [sic] does not
    have an established Village or Rural Village boundary.”
    75
    must be served only by septic systems for sewage management to ensure the
    preservation of the community’s rural character.”
    The superior court found the Project “fundamentally conflicts” with this
    policy, ruling: “[T]he . . . Project is conditioned on annexation of the site into
    a sewer district. The County argues that the Community Plan is being
    amended to expand the existing Harmony Grove Village so that the site is
    now covered by the Specific Plan for Harmony Grove Village South which
    expressly calls for using a sewage treatment plant. However, re-designating
    the area so that it is covered by a less restrictive community plan still
    conflicts with Policy LU-1.1.3 by disregarding the requirement that Elfin
    Forest only be served by septic systems.”
    Appellant contends Policy LU-1.1.3 does not apply: “The San Dieguito
    Community Plan covers two distinct planning areas, one known as Elfin
    Forest and the other known as Harmony Grove, and the Project is in
    Harmony Grove. . . . Policy LU-1.1.3 . . . is part of the Community Plan’s
    rules for Elfin Forest, not Harmony Grove. [¶] . . . [¶] There is no such
    language governing Harmony Grove, so this septic policy never applied to the
    Project.”
    Appellant is correct. The EIR makes clear that the Project is within
    the Harmony Grove community, not the Elfin Forest community. The
    “Project Location” section states the “Project is located in the unincorporated
    portion of northern San Diego County, immediately west of City of Escondido
    boundaries in the community of Harmony Grove. . . . The community of Elfin
    Forest is located approximately 4 miles to the west.” (Italics added.) It
    makes clear the entire Project site is within that community: “The [Elfin
    Forest and Harmony Grove portion of the San Dieguito] Community Plan
    covers the planning areas of Elfin Forest and Harmony Grove, which total
    76
    approximately 6,793 acres in size. The entire Project site is located within the
    Harmony Grove community.” (Italics added.)
    Though the EIR states the Project site “would be required to be
    annexed . . . into an existing Sanitation District for sewer service,” the site is
    not subject to the Elfin Forest septic policy, thus the annexation does not
    conflict with the Community Plan.
    Respondents disagree, saying a portion of the Project site was within
    Elfin Forest prior to the boundary line amendment. They cite to a portion of
    the Planning Commission Hearing Report that reads: “The entire project site
    is located within the Elfin Forest-Harmony Grove Subarea of the San
    Dieguito Community Plan Area. As part of the [general plan amendment],
    the Elfin Forest-Harmony Grove Subarea Plan will be amended to modify
    Policy LU-2.2.1, to add associated text changes and to add the project to
    Chapter 6, the Harmony Grove Village Specific Plan Area (SPA). Figures 1
    and 3 of the Elfin Forest-Harmony Grove Subarea plan will be amended to
    add the project within the village boundary line.”
    That the Project is within the subarea plan area does not establish that
    any of the Project lies within the separate Elfin Forest community. Rather,
    as stated, the EIR makes clear that the “entire Project site” is within the
    Harmony Grove community. Respondents also cite to a map showing the
    Project in relation to the existing Harmony Grove Village. That map does not
    show the Elfin Forest boundary or contradict the EIR’s statements as to the
    Project location. There is no substantial evidence that the Project conflicts
    with Community Plan Policy LU-2.2.1.
    77
    DISPOSITION
    As in Golden Door, supra, 
    50 Cal.App.5th 467
    , the final judgment in
    this case is based on the trial court’s findings and determinations, some of
    which are erroneous. Accordingly, on remand, the court is directed to amend
    its minute order, issue a new writ of mandate and judgment, and conduct
    further proceedings consistent with this opinion. The parties shall bear their
    own costs on appeal.
    O’ROURKE, Acting P. J.
    WE CONCUR:
    AARON, J.
    IRION, J.
    78