Mountainlands Conservancy, LLC v. Cal. Coastal Com. ( 2020 )


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  • Filed 4/1/20
    CERTIFIED FOR PUBLICATION
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    SECOND APPELLATE DISTRICT
    DIVISION EIGHT
    MOUNTAINLANDS                        B287079
    CONSERVANCY, LLC, et al.,
    Plaintiffs and Appellants,      (Los Angeles County
    Super. Ct. No. BS149063)
    v.
    CALIFORNIA COASTAL
    COMMISSION,
    Defendant and Respondent;
    ______________________________
    COUNTY OF LOS ANGELES,
    Real Party in Interest and
    Respondent.
    APPEAL from a judgment of the Superior Court of Los
    Angeles County, James C. Chalfant, Judge. Affirmed.
    Bradley & Gmelich, Barry A. Bradley, Lena J. Marderosian,
    and Dawn Cushman for Plaintiffs and Appellants.
    Damien M. Schiff for Pacific Legal Foundation as Amicus
    Curiae on behalf of Plaintiffs and Appellants.
    Xavier Becerra, Attorney General, Daniel A. Olivas, Senior
    Assistant Attorney General, Christina Bull Arndt, Supervising
    Deputy Attorney General, and David Edsall Jr., Deputy Attorney
    General, for Defendant and Respondent.
    No appearance for Real Party in Interest and Respondent.
    ____________________________________
    SUMMARY
    This is an appeal from a decision of the California Coastal
    Commission certifying a local coastal program for the Santa
    Monica Mountains that prohibits any new vineyards in the Santa
    Monica Mountains coastal zone.
    Three limited liability companies that own land subject to
    the local coastal program sought a writ of mandate to vacate the
    certification, challenging the commission’s decision on both
    procedural and substantive grounds. The trial court denied the
    writ petition.
    We affirm the judgment.
    LEGAL AND FACTUAL BACKGROUND
    1.     The Legal Background: General Principles
    The California Coastal Act (the Coastal Act) was passed in
    1976. (Pub. Resources Code, § 30000 et seq.)1 It is
    “a comprehensive scheme to govern land use planning for the
    entire coastal zone of California.” (Yost v. Thomas (1984) 
    36 Cal. 3d 561
    , 565 (Yost).) The Coastal Act requires “all local governments
    lying in whole or in part within the coastal zone . . . to prepare and
    submit to the Commission a local coastal plan.” (Yost, at p. 566,
    citing § 30500, subd. (a).)
    1     Unless otherwise specified, further statutory references are
    to the Public Resources Code.
    2
    A local coastal program (or LCP) is defined as “a local
    government’s (a) land use plans, (b) zoning ordinances, (c) zoning
    district maps, and (d) within sensitive coastal resources areas,
    other implementing actions . . . .” (§ 30108.6.) “The precise
    content of each local coastal program shall be determined by the
    local government . . . in full consultation with the commission and
    with full public participation.” (§ 30500, subd. (c).)
    The local coastal program may be submitted to the
    commission all at once or in two phases. The two phases are, first,
    the land use plan (or LUP), and second, the zoning ordinances,
    zoning maps and any other implementing actions (§ 30511).
    (The parties refer to these zoning ordinances and other
    implementing actions as a “local implementation plan” or LIP.)
    The commission will certify a land use plan, or any
    amendments to it, if the land use plan “meets the requirements of,
    and is in conformity with, the policies of Chapter 3 (commencing
    with Section 30200).” (§ 30512, subd. (c); 
    Yost, supra
    , 36 Cal.3d at
    p. 566.) These are referred to as “chapter 3 policies.” They include
    policies on land resources (§§ 30240-30244), a category that
    includes environmentally sensitive habitat areas (§ 30240) and
    agricultural lands. The latter policies include a section on prime
    agricultural land (§ 30241) and a section on all other lands suitable
    for agricultural use (§ 30242).2 Conflicts between one or more
    policies of the Coastal Act are to be resolved “in a manner which on
    balance is the most protective of significant coastal resources.”
    (§ 30007.5.)
    2     Other chapter 3 policies include policies on public access,
    recreation, marine environment, development, and industrial
    development. (§§ 30210-30236, 30250-30265.5.)
    3
    The commission’s review of a local government’s land use
    plan is expressly limited to its determination that the plan “does,
    or does not, conform with” the requirements of chapter 3.
    (§ 30512.2, subd. (a).) As for the second-phase implementing
    actions (the local implementation plan), “[t]he Commission may
    only reject zoning ordinances on the grounds that they do not
    conform, or are inadequate to carry out the provisions of the
    certified land use plan.” (
    Yost, supra
    , 36 Cal.3d at p. 566, citing
    § 30513.)
    “A certified local coastal program and all local implementing
    ordinances, regulations, and other actions may be amended by a
    local government, but no such amendment shall take effect until it
    has been certified by the commission.” (§ 30514, subd. (a).)
    2.     The Factual and Procedural Background
    Los Angeles County (the county) has divided its coastal zone
    into three areas. One of these is the Santa Monica Mountains.
    In 1986, the commission certified the land use plan portion of
    a proposed local coastal program for the Santa Monica Mountains.
    (This is referred to as the 1986 Malibu land use plan.) No zoning
    ordinances or other implementing actions were adopted or
    certified, so the county did not have a complete certified local
    coastal program for the Santa Monica Mountains. (This meant
    that the commission retained jurisdiction over land use in the
    Santa Monica Mountains, and applicants for any development
    project in that coastal zone had to obtain permits from the
    commission rather than from the county.)
    In 2007, the county’s regional planning commission
    recommended approval of a proposed local coastal program that
    included an “updated land use plan . . . to replace the Malibu LUP”
    as well as a proposed local implementation plan. The Board of
    4
    Supervisors (the board) indicated its intent to approve the
    proposed program with modifications, but the commission never
    considered or certified it.
    In 2012, the commission began to encourage certification of
    uncertified areas and to work with local agencies to update
    existing coastal plans. After negotiations between commission
    staff and the county, clarifications and amendments were made to
    the 2007 proposed local coastal program.
    a.    The county’s proposed local coastal program
    On January 2, 2014, the county gave notice the board would
    consider a proposed local coastal program for the Santa Monica
    Mountains at a public hearing on February 11, 2014.
    The county’s proposed program included a land use plan
    replacing the 1986 Malibu land use plan, and an implementation
    plan with amendments to the zoning code and a zone change
    ordinance. The county summarized the major differences between
    the 1986 Malibu land use plan and “the current amendment to the
    land use plan,” and stated that “this amendment will replace the
    1986 LUP in its entirety.”
    Among the significant differences was that “[a]gricultural
    uses are proposed for restriction in the proposed [local coastal
    program].” For reasons the county enumerated, “the County has
    elected to respect the vineyards and crop areas already in
    existence, and to prohibit further establishment of such uses in the
    future.” Another significant difference involved critical habitat; in
    the 1986 plan, “there was a far smaller designation of critical
    habitat than is now presented as H1.” (“H1” is the designation for
    “[t]he most sensitive and geographically constrained habitats.”)
    5
    The board held a public hearing, and on February 18, 2014,
    approved a resolution stating its intent to approve the proposed
    program and submit it to the commission.
    b.     The commission staff’s March 27 report
    On March 27, 2014, the commission staff issued a report on
    the county’s proposed land use plan amendment. The staff
    recommended denial as submitted, but recommended approval
    subject to 60 suggested modifications. Most were clarifications and
    refinements, but several modifications were suggested as
    necessary to ensure the land use plan was in conformity with
    chapter 3 policies.
    As relevant here, in modification No. 27, the staff clarified
    the provision prohibiting new crop, orchard, vineyard, and other
    crop-based nonlivestock agricultural uses, adding that existing
    agricultural uses “may not be expanded.” The staff also suggested
    a new policy (modification No. 28) stating that “[e]xisting, legally-
    established, economically-viable crop-based agricultural uses on
    lands suitable for agricultural use shall not be converted to non-
    agricultural use” unless certain requirements were met. (This
    modification tracked a policy stated in section 30242 of the Coastal
    Act, described post.) The staff also suggested (modification No. 29)
    deleting a provision that limited “existing commercial or ‘hobby’
    agricultural uses such as vineyards, orchards, and field or row
    crops,” but again specified that existing agricultural uses may not
    be expanded.
    The commission staff’s report reviewed sections 30241 and
    30242 of the Coastal Act (the policies on agricultural land).
    Section 30241 specifies that the “maximum amount of prime
    agricultural land shall be maintained in agricultural production to
    assure the protection of the areas’ agricultural economy, and
    6
    conflicts shall be minimized between agricultural and urban land
    uses” through several stated policies. Section 30242 governs other
    agricultural land, and states that lands “suitable for agricultural
    use shall not be converted to nonagricultural uses unless
    (1) continued or renewed agricultural use is not feasible, or
    (2) such conversion would preserve prime agricultural land or
    concentrate development consistent with [other specified policies].”
    The staff report concluded section 30241’s mandate to
    maintain the maximum amount of prime agricultural land in
    agricultural production did not apply. This was because the
    “limited lands within the plan area that contain prime agricultural
    soils are either State or Federal public parkland or are developed
    with existing uses and not in agricultural production.”3
    Further, “other lands in existing agricultural use and
    suitable for agricultural use are very limited in area. [A] large
    percentage of the plan area consist[s] of very steep slopes and poor
    soils, which are unsuitable for agriculture. . . . The steep slopes,
    poor soils, limited water availability, and other constraints within
    the Santa Monica Mountains make . . . the cultivation of vineyards
    and other crops either infeasible, or extremely difficult and costly.”
    In addition, “[a]ctivities such as vineyards or other intensive crop
    cultivation can have significant adverse impacts on the biological
    3      The staff report explains in detail the meaning of “prime
    agricultural land” under the Coastal Act. The definition (§ 30113)
    includes four categories described in Government Code
    section 51201, one of which is “[l]and planted with fruit- or nut-
    bearing trees, vines, bushes, or crops which have a nonbearing
    period of less than five years” and which will normally return “not
    less than two hundred dollars ($200) per acre” on an annual basis.
    (Gov. Code, § 51201, subd. (c)(4).)
    7
    integrity of the surrounding mountain environment and receiving
    waterbodies.” The staff described a “confluence of factors—
    including steep slopes, poor soils, scenic considerations, sensitive
    watersheds, abundant [environmentally sensitive habitat areas],
    and lot size limitations—[t]hat render the vast majority of the land
    in the Santa Monica Mountains unsuitable for agricultural use.”
    Consequently, “the prohibition on the conversion of lands suitable
    for agricultural use to non-agricultural use” in section 30242 “does
    not apply in most cases in this unique plan area.”
    The report stated that the only areas in existing agricultural
    production were “very limited vineyard areas, encompassing a very
    small percentage of the plan area.” The “very limited areas where
    agriculture is possible” were “the one or two areas that are already
    in active agricultural production,” and these were to be protected
    by modification No. 28. These two vineyard areas encompassed
    approximately 50 acres. “Otherwise, the remaining vineyards in
    the plan area are a very limited number of very small, ‘hobby’
    vineyard plots (less than 2 acres) that are accessory to single-
    family residences,” and “these areas are very limited and often not
    commercially viable.”
    The staff report also stated that the “protection and
    preservation of the environmentally sensitive habitats in the Santa
    Monica Mountains is the most significant issue in this LUP.” The
    report described the plan’s “biological resource protection
    approach” and the three categories of habitat designated in the
    plan (H1, H2 and H3). “H1 and H2 habitats are collectively
    described as Sensitive Environmental Resource Areas (SERA’s).”
    As noted earlier, the designation “H1” is for the “most sensitive
    and geographically constrained habitats.” “H2 habitat consists of
    areas of high biological significance, rarity, and sensitivity that are
    8
    important for the ecological vitality and diversity of the Santa
    Monica Mountains Mediterranean Ecosystem.” “H3 habitats are
    developed or legally disturbed areas that may retain some residual
    habitat values, but are not considered to be ESHA
    [environmentally sensitive habitat areas].”4 More than 87 percent
    of the 50,000 acres in the land use plan is designated either H1 or
    H2.
    c.    Public comments
    On April 7, 2014, plaintiffs—Mountainlands Conservancy,
    LLC; Third District Parklands, LLC; and Third District
    Meadowlands, LLC – submitted their comments. They contended
    the proposed land use plan, even with the staff’s proposed
    modifications, “raises substantial issues as to conformity with”
    chapter 3 policies, in particular the “policy of preserving land in
    the Coastal Zone for agriculture.” Plaintiffs asked the commission
    either to decline certification or to “set an additional hearing on all
    matters that raise such ‘substantial issues.’ ” (Section 30512
    requires an additional hearing under specified circumstances, as
    we discuss post.)
    Specifically, plaintiffs first challenged the staff’s finding that
    the only prime agricultural soils were located in public parkland
    areas or developed with existing uses. Plaintiffs said they were
    “aware of at least one property within the Coastal Zone containing
    a deed restriction indicating the presence of ‘prime agricultural
    4      The Coastal Act defines “ ‘[e]nvironmentally sensitive area’ ”
    as “any area in which plant or animal life or their habitats are
    either rare or especially valuable because of their special nature or
    role in an ecosystem and which could be easily disturbed or
    degraded by human activities and developments.” (§ 30107.5.)
    9
    land’ on that property.” (Plaintiffs did not identify or document
    this property.)
    Plaintiffs also challenged the staff’s conclusion that the vast
    majority of land in the Santa Monica Mountains was unsuitable
    for agricultural use. Plaintiffs contended these findings were
    “purely speculative”; and the report contained “no information on
    the amount of land . . . that is currently under cultivation,” and no
    persuasive explanation of why there is no further land suitable for
    agriculture.
    Plaintiffs attached an expert report from Daryl Koutnik on
    agricultural use opportunities in the Santa Monica Mountains.
    Mr. Koutnik, who stated he was a principal in “Biological and
    Environmental Compliance,” provided a list of soil types in the
    Santa Monica Mountains suitable for agriculture. He concluded
    the staff report’s dismissal of agricultural uses “based solely on
    soils being too rocky and steeply sloping . . . does not correspond to
    current successful agricultural operations in the area.” With
    modern practices, various crops “may be successful on a variety of
    soil types and slope steepness,” and “[f]arming and engineering
    techniques are available to address water quality and erosional
    concerns.” The limitation of agricultural uses to only those
    designated by the Department of Conservation based on soil types
    and recent or current operation “while prohibiting such use for
    properties that have been historical[ly] used for such practices is a
    substantial change from the current zoning designations that allow
    these agricultural activities.”
    Plaintiffs submitted a soil survey of the Santa Monica
    Mountains National Recreation Area (as well as other soil surveys,
    soil maps and related materials). The Santa Monica Mountains
    survey stated that “[a]bout 3,470 acres, or less than 2 percent of
    10
    the survey area, would meet the requirements for prime farmland
    if an adequate and dependable supply of irrigation water were
    available.”
    Plaintiffs also submitted an opinion from geologist Scott
    Hogrefe, to refute the staff’s assertion that the Santa Monica
    Mountains, because of steep topography, poor soils, limited water
    availability, and constrained access, have never been an area
    particular conducive for agriculture. Mr. Hogrefe, who has been a
    consulting geologist on many properties in the area during the past
    30 years, opined that the “vast majority of sites across the Santa
    Monica Mountains do contain good to excellent soil conditions for
    agricultural purposes.”
    d.     The commission staff’s April 9 addendum
    On April 9, 2014, the commission staff issued an addendum
    to its March 27 report, one day in advance of the April 10 public
    hearing. Among other matters, the April 9 addendum responded
    to concerns raised by the public, including by plaintiffs, about the
    proposed prohibition of all new crop-based agriculture. The
    addendum stated the commission staff had conferred with county
    staff and agreed on some proposed changes, including its
    recommendations on modifications No. 27 and 29, “to temper the
    wholesale prohibition on new crop-based agriculture that appears
    in the County’s original proposal.”
    The trial court aptly summarized the recommended changes.
    “In light of the comments received,” commission staff
    recommended a modification “to allow new agricultural uses that
    met the following criteria: (1) the new agricultural uses are
    limited to specified areas on natural slopes of 3:1 or less steep, or
    areas currently in legal agricultural use; (2) new vineyards are
    prohibited; and (3) organic or biodynamic farming practices are
    11
    followed.” The commission staff “removed the prohibition on
    expanding agricultural uses, and recommended that existing legal
    agricultural uses may be expanded consistent with” the three
    criteria just mentioned. The commission staff “recognized that the
    continuation of agricultural uses” is encouraged under the Coastal
    Act if those uses “can be accomplished consistent with other
    Chapter 3 policies.”
    The commission staff’s new findings “justified the allowance
    for new agriculture because ‘small-scale crop-based agricultural
    operations (with the exceptions of vineyards) can avoid adverse
    impact to biological resources and water quality,’ if ‘organic and
    biodynamic farming practices are followed.’ ” The staff “explained
    that ‘organic and biodynamic farming practices are required to
    prevent the use of pesticides, herbicides, and fertilizers, which can
    adversely impact the biological productivity of coastal waters and
    human health.’ ” New vineyards “would remain prohibited due to
    a number of identified adverse impacts attributed specifically to
    those operations, including increased erosion from removal of all
    vegetation, use of pesticides, large amounts of water required,
    their invasive nature, and their adverse impact to scenic views.”
    e.     Plaintiffs’ response
    Plaintiffs responded to the April 9 addendum on April 10,
    the date of the public hearing.
    First, plaintiffs contended that allowing affected parties less
    than 24 hours to respond to the proposed revisions would violate
    section 30503. (Section 30503 requires the public to be provided
    with “maximum opportunities to participate” during the
    preparation, approval, certification, and amendment of any local
    coastal program.)
    12
    Second, plaintiffs argued that even as revised, the proposed
    land use plan “still raises substantial issues as to its compliance”
    with chapter 3 policies, so that the commission “must set an
    additional hearing to discuss those issues.” Plaintiffs cited
    three “substantial issues.”
    Plaintiffs said the revised proposal “would still exclude new
    agriculture from the vast majority of land” in the Santa Monica
    Mountains coastal zone. This was because new agriculture was
    allowed, with two limited exceptions, “only in certain H3 habitat
    areas,” and “the bulk of the area in the Coastal Zone is designated
    H1 or H2.” Plaintiffs cited Dr. Hogrefe’s report that the vast
    majority of land was suitable for agricultural use. Plaintiffs
    asserted that “[t]o the extent that land that had potentially been
    available for agricultural use would now be unavailable due to its
    classification as H1 or H2 habitat, the proposed [land use plan] as
    revised by the Staff’s Addendum conflicts with the policy expressed
    in Section 30242 of the Coastal Act against conversion of land
    suitable for agricultural use to nonagricultural land.”
    Plaintiffs also challenged the staff’s justification for the
    prohibition of new vineyards, contending the staff’s statements
    (reproduced in the next footnote)5 were “newly presented
    5     “Vineyards require the removal of all native vegetation and
    the soils must be scarified which results in increased erosion and
    sedimentation of streams which adversely impact riparian areas
    and water quality. In addition, vineyards typically require the
    application of pesticides that can also adversely impact coast
    streams and riparian habitat. Furthermore, vineyards require
    large amounts of water that can require agricultural wells that can
    draw down ground water and adversely impact streams and seeps
    and their associated habitats. Moreover, County staff asserts that
    grapevines can be an invasive type of vegetation in riparian areas.
    13
    . . .without substantiation and without the benefit of public
    comment.” (Plaintiffs similarly challenged the limitation of
    additional agriculture solely to organic and biodynamic farming
    methods, but they do not pursue this point on appeal.)
    In addition, plaintiffs submitted two documents for the
    record. The one relevant to this appeal is a June 2012 study
    prepared by researchers at the UCLA Institute of the Environment
    & Sustainability, entitled “Potential Extent of Vineyard
    Development in the Santa Monica Mountain National Recreation
    Area [SMMNRA]” (the UCLA study). The UCLA study sought to
    identify “areas where vineyard development could potentially occur
    given current zoning and land use regulations,” and stated that, of
    the 48,394 acres in the study site, 62.5 percent had favorable
    physical conditions and appropriate zoning for development. In
    addition to potential vineyard development, the report identified
    existing vineyards in the area (38, some with slopes greater than
    33 percent). These included “large commercial vineyards, as well
    as small hobby vineyards.” (We will describe the UCLA study
    further in connection with our legal discussion of plaintiffs’
    substantial evidence claim.)
    f.    The April 10 hearing and subsequent
    proceedings
    After presentations by county and commission staff, the
    commission heard from many members of the public. Counsel for
    plaintiffs argued the commission had a duty to determine whether
    there were any substantial issues concerning the compliance of the
    Finally, given that grapevines must be supported by trellises in a
    linear, unnatural pattern, vineyards can adversely impact scenic
    views.”
    14
    land use plan with chapter 3 policies, and that there were such
    issues, “especially with compliance with section 30242.”
    Counsel also expressed agreement with much of the position
    presented by a representative of the California Coalition of Coastal
    Farmers (Mr. Don Schmitz), who spoke at some length about prime
    agricultural land in the Santa Monica Mountains and against the
    restriction on vineyards. Mr. Schmitz reported that the entire
    Santa Monica Mountains area had been approved by federal
    authorities as a fine wine growing region (designated an AVA or
    American Viticultural Area).
    The commission voted unanimously to approve the land use
    plan with the modifications suggested by the commission staff.
    Three months later, after a staff report, objections from
    plaintiffs, and a public hearing, the commission approved the
    county’s proposed local implementation plan, with modifications.
    On August 26, 2014, the board issued a resolution adopting the
    local coastal program, consisting of the land use plan and the local
    implementation plan, both as modified by the commission. Final
    commission certification took place at its meeting on October 10,
    2014.
    g.    The writ petition proceedings
    In June 2014, after the commission’s approval of the land
    use plan, plaintiffs filed a petition for writ of mandate. The
    amended petition filed December 9, 2014, is the operative
    pleading. Plaintiffs alleged the commission did not proceed in the
    manner required by law, because it did not make a “substantial
    issues” determination under section 30512. Even with the
    modifications in the April 9 addendum, they alleged, the proposed
    land use plan raised substantial issues of conformity with
    sections 30241 and 30242. They claimed the plan “converted lands
    15
    suitable for agricultural use to non-agricultural use in violation of
    Section 30242.” They asserted that all lands of greater than
    3:1 slope were converted to nonagricultural use, as were “all lands
    in the 87.9% of the Coastal Zone designated as H1 or H2,” with
    limited exceptions. Plaintiffs alleged the commission was required
    to conduct a further hearing on those issues.
    Plaintiffs also alleged that, by considering the addendum
    made available to the public the day before the hearing, the
    commission denied them a meaningful opportunity to address the
    findings that “new vineyards deserved to be separated from other
    forms of agriculture for categorical prohibition.”
    Plaintiffs further alleged the commission’s findings were not
    supported by substantial evidence, including insufficient evidence
    to justify a categorical prohibition of vineyards as opposed to other
    types of agriculture.
    The trial court denied plaintiffs’ petition, issuing
    two comprehensive rulings.
    In its first ruling, the court rejected plaintiffs’ claim that the
    April 9 addendum was required to be distributed at least seven
    days before the public hearing, and ruled that even if there were
    such a requirement, plaintiffs could not show they were prejudiced
    by the addendum’s timing. The court further concluded the
    commission was not required under section 30512 to hold a
    separate hearing on the matters claimed by plaintiffs to raise
    “substantial issues.” The proposed land use plan was an
    amendment of the 1986 Malibu plan, so that the amendment
    procedure under section 30514 applied, not section 30512. In
    addition, the court found the commission correctly concluded that
    section 30241—requiring that the maximum amount of prime
    agricultural land be maintained in production—did not apply.
    16
    And, the court found substantial evidence supported the
    commission’s findings “that a large percentage of the plan area is
    not suitable for agricultural use and not subject to section 30242’s
    restriction on the conversion of lands suitable for agricultural use.”
    The trial court continued the hearing and ordered further
    briefing, limited to the question whether the total ban on
    vineyards was supported by substantial evidence. Along with their
    supplemental brief, plaintiffs filed a motion to augment the record
    with documents relating to the federal designation of the Santa
    Monica Mountains coastal region as an American Viticultural
    Area. At the continued hearing, the court denied the motion as
    unauthorized and untimely.
    In its second ruling, the court described and analyzed the
    evidence in great detail, concluding there was substantial evidence
    that vineyards are harmful to the Santa Monica Mountains ecology
    “because they require clearing and scarification, increase erosion
    and sedimentation, require pesticide use, and constitute an
    invasive monoculture.” Further, “[o]f these harms, many are
    inherent to the nature of viticulture, and there is no evidence that
    they could be mitigated.”
    Judgment was entered on November 20, 2017, and this
    appeal followed.
    DISCUSSION
    With minor variations, plaintiffs make the same claims they
    made to the trial court: that section 30512 applied and mandated
    a further hearing; that the commission failed to enforce the
    agricultural protection policies of the Coastal Act; that the hearing
    was unfair and denied due process because the April 9 addendum
    was issued the day before the hearing; and that no substantial
    evidence supported the decision “to isolate vineyards for
    prohibition.” None of these contentions has merit.
    17
    1.     The Standard of Review
    Under Code of Civil Procedure section 1094.5, the trial court
    reviews the commission’s decision to determine whether the
    commission “proceeded without, or in excess of, jurisdiction;
    whether there was a fair trial; and whether there was any
    prejudicial abuse of discretion. Abuse of discretion is established if
    the [commission] has not proceeded in the manner required by law,
    the order or decision is not supported by the findings, or the
    findings are not supported by the evidence.” (Id., subd. (b); Ross v.
    California Coastal Com. (2011) 
    199 Cal. App. 4th 900
    , 921 (Ross).)
    “The [commission’s] findings and actions are presumed to be
    supported by substantial evidence,” and plaintiffs have the burden
    of demonstrating otherwise. (Ross, at p. 921.)
    The trial court considers all relevant evidence, but does not
    substitute its own findings and inferences for those of the
    commission. 
    (Ross, supra
    , 199 Cal.App.4th at pp. 921-922.) The
    trial court may reverse the commission’s decision “ ‘only if, based
    on the evidence before it, a reasonable person could not have
    reached the conclusion reached by [the commission].’ ” (Id. at
    p. 922.) “Our scope of review is identical to that of the trial court.
    [Citations.] We, like the trial court, examine all relevant materials
    in the entire administrative record to determine whether the
    [commission’s] decision is supported by substantial evidence.”
    (Ibid.)
    When interpreting a statute, our review is de novo, but the
    commission’s interpretation of its governing statutes “is entitled to
    great weight.” 
    (Ross, supra
    , 199 Cal.App.4th at p. 922.)
    2.     Section 30512 versus Section 30514
    Plaintiffs contend the commission was required to proceed
    under section 30512, rather than under section 30514 (governing
    18
    amendments). As already noted, section 30512 requires the
    commission to determine, after a public hearing, whether the land
    use plan of a proposed local coastal program “raises no substantial
    issue as to conformity with” chapter 3 policies. If the plan does
    raise a substantial issue, the commission must identify the issues
    and hold at least one public hearing on the matters identified.6
    The commission, on the other hand, says that it properly
    proceeded under section 30514, which has no such requirement.
    Under section 30514, “[a]ny proposed amendments to a certified
    local coastal program” must be submitted and processed under
    sections 30512 and 30513,7 “except that the commission shall make
    no determination as to whether a proposed amendment raises a
    6      Specifically, section 30512 requires the commission, after
    submission of the land use plan and after public hearing, to “either
    certify or refuse certification, in whole or in part,” under specified
    procedures. (Id., subd. (a).) The commission must determine, after
    the public hearing, “whether the land use plan, or a portion thereof
    applicable to an identifiable geographic area, raises no substantial
    issue as to conformity with the policies of Chapter 3.” (Id.,
    subd. (a)(1).) If the commission determines no substantial issue is
    raised, the land use plan “shall be deemed certified as submitted.”
    (Ibid.) If the commission determines that one or more portions of a
    land use plan raise no substantial issue, the remainder of the land
    use plan “shall be deemed to raise one or more substantial issues,”
    and the commission must identify each substantial issue for each
    geographic area. (§ 30512, subd. (a)(2).) The commission must
    hold at least one public hearing “on the matter or matters that
    have been identified as substantial issues.” (Id., subd. (a)(3).)
    7    Section 30513 describes the procedures that govern
    submission and approval of zoning ordinances and other
    implementing actions (the local implementation plan).
    19
    substantial issue as to conformity” with chapter 3 policies “as
    would otherwise be required by Section 30512.” (§ 30514,
    subd. (b), italics added.) There is no limitation on the number of
    amendments included in a submittal. (Ibid.) And the scope of
    section 30514 is broad: “A certified local coastal program and all
    local implementing ordinances, regulations, and other actions may
    be amended . . . .” (§ 30514, subd. (a).)
    The record shows the county identified its February 14, 2014
    submission to the commission with a caption that begins with the
    words, “formal submittal of amendment to the 1986 land use plan.”
    The submission included a “summary of the major differences
    between 1986 Malibu LCP, LUP and the current submittal.”
    Similarly, the commission staff’s March 27 report describing the
    county’s proposed local coastal program stated that, “[f]or the Land
    Use Plan portion, the County is requesting an amendment to its
    existing certified Land Use Plan, consisting of a comprehensive
    update to replace the existing Land Use Plan with a new proposed
    Land Use Plan.”
    In the trial court, plaintiffs argued that section 30514
    applies only when the local government is seeking “a minor change
    to its already-certified LCP.” They relied on subdivision (e) of
    section 30514, which states that “ ‘amendment of a certified local
    coastal program’ includes, but is not limited to, any action . . . that
    authorizes the use of a parcel of land other than a use that is
    designated in the certified local coastal program as a permitted use
    of the parcel.” The trial court disagreed, pointing out that
    plaintiffs’ argument was inconsistent with the plain language of
    section 30514, which specifies that an amendment “is not limited
    to” parcel use changes. (§ 30514, subd. (e).)
    20
    On appeal, plaintiffs take a different tack, telling us that
    section 30514 only applies to amendment of “[a] certified local
    coastal program” (§ 30514, subd. (a)), and in this case there was no
    certified local coastal program (only the 1986 certified land use
    plan).8 We are not persuaded. A local coastal program does
    consist, as plaintiff observes, of both a land use plan and an
    implementation plan. But the only basis for rejection of an
    implementation plan is that it does not conform to or is inadequate
    to carry out a certified land use plan. (§ 30513, subd. (b).) The
    substance and prerequisite of a local coastal program is the
    certified land use plan; there cannot be any implementation plan
    without the land use plan. Plaintiffs’ limited view of the scope of
    section 30514 as permitting amendment of a local coastal program
    but not a land use plan is not supported by a sensible construction
    of its words nor by any legal authority. To the extent legal
    authority exists, it is to the contrary. (Cf. 
    Yost, supra
    , 36 Cal.3d at
    p. 573, fn. 9 [“A local government can amend a certified LCP [local
    coastal program] or LUP [land use plan] (§ 30514).”].)
    Plaintiffs insist that when a land use plan entirely replaces
    an existing land use plan, it is not an amendment. The cases
    plaintiffs cite do not support that proposition. For example,
    plaintiffs tell us that the repeal and replacement of a statute
    “supersedes all prior statutes,” rendering them “annulled, repealed
    8     The trial court observed that plaintiffs “do not argue that
    section 30514(b) applies only to amendments to a certified LCP,
    and the County only had a certified LUP at the time of the
    April 10, 2014 Commission hearing. In any event, the
    Commission’s interpretation of section 30514(b)’s procedure as
    applying to an amendment to a certified LUP is entitled to
    deference.”
    21
    and void.” For this rule, plaintiffs cite Wood v. Roach (1932)
    
    125 Cal. App. 631
    , 638. The aptness of plaintiffs’ analogy is
    questionable, but in any event Wood v. Roach repeatedly refers to
    the enactments at issue, which established “a new and complete
    scheme,” as the “amendments.” (Id. at pp. 636-638.)
    In short, we see no basis in legal authority or sound
    reasoning for concluding that an amendment to a land use plan
    must do something less extensive than to replace the plan entirely.
    This is a circumstance where it is entirely appropriate to defer to
    the commission’s interpretation of its own procedures. (See Hines
    v. California Coastal Com. (2010) 
    186 Cal. App. 4th 830
    , 849 [“ ‘it is
    well established that great weight must be given to the
    administrative construction of those charged with the enforcement
    and interpretation of a statute. [Citations.] We will not depart
    from the Commission’s interpretation unless it is clearly
    erroneous’ ”].) We note as well that the commission has used the
    amendment process in analogous circumstances in the past.
    (Cf. Headlands Reserve, LLC v. Center for Natural Lands
    Management (C.D.Cal. 2007) 
    523 F. Supp. 2d 1113
    , 1120-1121
    [referring to the commission’s certification of an amendment to a
    local coastal program where “[t]he new amendment replaced the
    pre-existing 1986 [local coastal program] and covered [a]
    previously uncertified . . . area”].)
    In sum, the commission proceeded properly under
    section 30514, and therefore was not required to make the
    “substantial issue” determination otherwise required by
    section 30512. (§ 30514, subd. (b).)
    22
    3.     The “Blanket Determination” Issue: Agricultural
    Policies in Sections 30241 and 30242
    Plaintiffs next argue the commission failed to proceed in the
    manner required by law because “it made a blanket determination
    that the Santa Monica Mountains are not suitable for agriculture.”
    Plaintiffs say that sections 30241 and 30242 of the Coastal Act
    contemplate a determination of the feasibility of agriculture “in
    relation to a specific parcel of property,” on “a case-by-case basis.”
    We disagree. Plaintiffs misconstrue sections 30241 and 30242,
    mischaracterize what the commission did, and apparently
    misunderstand the point of a land use plan.
    First, plaintiffs cite no authority for their “case-by-case
    basis” claim. As the commission points out, the whole point of a
    local coastal program is to allow local governments to do area-wide
    planning in conformity with the policies of the Coastal Act.
    Second, sections 30241 and 30242 do not “contemplate” a
    case-by-case or parcel-by-parcel determination of the feasibility of
    agriculture. The commission properly considered these provisions,
    finding section 30241 does not apply, and appropriately protecting
    other lands suitable for agriculture as required by section 30242,
    as we now explain.
    a.     Section 30241
    As we have said, section 30241 specifies that the “maximum
    amount of prime agricultural land shall be maintained in
    agricultural production.”9 The commission found this provision did
    not apply, because prime agricultural lands in the plan area were
    either public parkland, or were developed with existing uses and
    9     Section 30241 also specifies six ways in which conflicts
    between agricultural and urban land uses must be minimized.
    (§ 30241, subds. (a)-(f).) Such conflicts are not at issue here.
    23
    not in agricultural production. (The areas containing prime soils
    “represent less than 2 percent of the entire plan area,” and the
    only areas in agricultural production “are very limited vineyard
    areas.”) Plaintiffs have identified no basis for disagreement with
    the commission’s conclusion (and completely misstate the basis for
    finding section 30241 inapplicable). As the trial court pointed out,
    the commission’s finding that section 30241 did not apply was
    “supported by all the evidence in the record, not just substantial
    evidence.”
    b.     Section 30242
    As we also said earlier, section 30242 states that “[a]ll other
    lands suitable for agricultural use shall not be converted to
    nonagricultural uses” unless “continued or renewed agricultural
    use is not feasible.” (§ 30242.)
    Plaintiffs contend it was “arbitrary and capricious” to find,
    as stated in the staff report, that a “confluence of factors—
    including steep slopes, poor soils, scenic considerations, sensitive
    watersheds, abundant [environmentally sensitive habitat areas],
    and lot size limitations—render the vast majority of the land in the
    Santa Monica Mountains unsuitable for agricultural use.”
    Plaintiffs point to Mr. Hogrefe’s testimony that the “vast majority
    of sites” contain good to excellent soil conditions for agricultural
    purposes, and that topographic conditions allow sustainable
    agricultural uses.
    We see nothing arbitrary or capricious about the
    commission’s conclusion.
    First, there was ample evidence in the staff report that the
    plan area is generally unsuitable for agriculture. In addition to
    steep slopes and poor soils, water availability is limited, and the
    area contains significant biological and scenic resources.
    24
    “Activities such as vineyards or other intensive crop cultivation
    can have significant adverse impacts on the biological integrity of
    the surrounding mountain environment and receiving
    waterbodies.”
    Second, as the trial court pointed out, “[t]he mere possibility
    of successful agricultural use,” as presented in the comments of
    plaintiffs’ experts, is not sufficient. Plaintiffs did not show that
    land in the plan area is actually suitable or feasible for
    agricultural uses. The Coastal Act defines “feasible” as “capable of
    being accomplished in a successful manner within a reasonable
    period of time, taking into account economic, environmental, social,
    and technological factors.” (§ 30108, italics added.)
    The staff report found that, in combination with the
    relatively steep topography, “vegetation removal, increased soil
    exposure, and chemical/fertilizer and irrigation requirements from
    crop-based agriculture can result in significant impacts to
    biological resources and water quality from increased erosion,
    sedimentation of streams, pollution, slope instability, and loss of
    habitat.” And plaintiffs completely ignore the requirement for
    protection of environmentally sensitive habitat areas. (Recall that
    more than 87 percent of the 50,000 acres in the land use plan is
    designated either H1 or H2 (sensitive environmental resource
    areas), making those areas unsuitable for agriculture.) An
    assessment of “feasibility” requires consideration of these factors.
    Further, the Legislature recognized there would be conflicts
    between the policies of the Coastal Act, and declared that “such
    conflicts be resolved in a manner which on balance is the most
    protective of significant coastal resources.” (§ 30007.5.)
    Third, section 30242 protects against the conversion of lands
    to nonagricultural uses. This necessarily means, as the words of
    25
    the statute demonstrate, that the lands being protected either are
    now in agricultural use, or have been in agricultural use in the
    past. The prohibition on conversion to nonagricultural uses does
    not apply where “continued or renewed agricultural use is not
    feasible.” (§ 30242, italics added.) As the trial court put it, “[t]his
    plain language means that suitable lands that are feasible for
    ‘continued or renewed agricultural use’ cannot be used for another
    purpose. It does not mean that all land suitable for agriculture
    must be used for agriculture.”
    Thus the trial court correctly gave no credence to testimony
    that the Santa Monica Mountains area has been zoned for
    agriculture “[f]or nearly 100 years.” The pertinent point was that
    “[t]here simply is no evidence that the [local coastal program]
    converts to a non-agricultural use any land that actually has been
    used for agricultur[e] anytime within the past 100 years.” The
    local coastal program approved by the commission fully protects
    areas currently in agricultural production, as dictated by section
    30242.
    There is no doubt that the preservation of agricultural land
    uses is an important public policy in California. (§§ 10201,
    subd. (c), 31050, 31051.) But so is the preservation of coastal
    resources, including environmentally sensitive habitat areas.
    (§ 30240, subd. (a) [“Environmentally sensitive habitat areas shall
    be protected against any significant disruption of habitat values,
    and only uses dependent on those resources shall be allowed
    within those areas.”].) We find no error in the commission’s
    construction and application of the agricultural protections
    embodied in sections 30241 and 30242.
    26
    4.     The Fair Trial Issue
    Our inquiry extends to “whether there was a fair trial.”
    (Code Civ. Proc., § 1094.5, subd. (b).) “[T]he ‘fair trial’ requirement
    is equivalent to a prescription that there be a fair administrative
    hearing.” (Pomona College v. Superior Court (1996)
    
    45 Cal. App. 4th 1716
    , 1730.)
    Plaintiffs contend the April 10 hearing was unfair and
    denied them due process because the commission “gave less than
    24-hours’ notice of a new [land use plan] that would completely
    ban vineyards.” Plaintiffs are referring to the staff’s April 9
    addendum, which responded to the public comments on the staff’s
    March 27 report. The staff responded by proposing modifications
    to the land use plan that would allow new agriculture (but not
    vineyards), subject to slope and “organic or biodynamic farming”
    requirements.
    To be clear, the April 9 addendum was not a “new” land use
    plan, nor did it propose a new treatment of vineyards. The
    addendum was issued in response to public comments, including
    those of plaintiffs, and it addressed their arguments opposing the
    agriculture ban by allowing some new agriculture, subject to
    significant restrictions. The addendum was issued the day before
    the public hearing, and complied with the pertinent regulations, as
    did the March 27 report. That is the way the process is supposed
    to work. Specifically:
    Several regulations govern commission action on land use
    plans. (Cal. Code Regs., tit. 14, §§ 13530-13541.) As pertinent
    here, section 13532 of the regulations governs the staff
    recommendation. It requires the executive director to prepare the
    recommendation, which must set forth specific findings, including
    facts, legal conclusions, suggested modifications, and so on. “In
    27
    order to assure adequate notification,” the regulation specifies the
    distribution of “the final staff recommendation” to interested
    persons and organizations, “within a reasonable time but in no
    event less than 7 calendar days prior to the scheduled public
    hearing.” As the trial court pointed out, the March 27 report was
    the “final staff recommendation” meeting the criteria in section
    13532 of the regulations.
    The succeeding section of the regulations (§ 13533) provides
    for comments from the public and others on the staff
    recommendation. (Cal. Code Regs., tit. 14, § 13533, subd. (a).)
    Notably, section 13533, subdivision (b) states: “The staff shall
    respond to significant environmental points raised during
    evaluation of the [local coastal program]. The response may be
    included within the staff report and shall be distributed to the
    Commission and the person making the comment. The response
    shall be available at the hearing on the [local coastal program] for
    all persons in attendance.”
    The April 9 addendum was the staff’s response to the
    comments received concerning the agricultural ban, taking them
    into account and recommending the modified policy described
    above. As the trial court found, the staff response and
    recommendation “met the requirements of 14 CCR section 13533,
    which only requires that it be ‘available at the hearing on the [local
    coastal program] for all persons in attendance.’ ”
    Plaintiffs assert the commission’s compliance with the
    regulations “is of no moment,” citing a case that states an affected
    person “might well be able, in the circumstances of a given case,”
    to demonstrate a denial of procedural due process notwithstanding
    full compliance with all applicable regulations. (Laupheimer v.
    State of California (1988) 
    200 Cal. App. 3d 440
    , 456, 449 [rejecting
    28
    claim that a statute and rules (on forest resources) as written
    denied procedural due process].) Plaintiffs have made no such
    demonstration, nor could they in the circumstances of this case.
    (Cf. Ryan v. California Interscholastic Federation-San Diego
    Section (2001) 
    94 Cal. App. 4th 1048
    , 1072 [due process “ ‘ “varies
    according to specific factual contexts” ’ ”; in some cases, “ ‘ “due
    process may require only that the administrative agency comply
    with the statutory limitations on its authority” ’ ”].)
    Instead, all plaintiffs do is insist that the April 9 addendum
    “significantly altered the fundamental premise” of the land use
    plan and was a “complete change in position without any advance
    knowledge” that “flies in the face of due process ‘dignity’ and
    fairness.” Plaintiffs’ rhetoric does not comport with the facts or the
    law.
    Nothing about the proposed modifications—responsive to
    public comment on the plan—altered the plan’s original objective:
    “Agricultural uses are proposed for restriction in the proposed
    [local coastal plan].” The modification merely eased, to a very
    limited extent, the categorical restriction on new agriculture.
    To call this a “complete change in position” is simply wrong.
    Plaintiffs repeatedly protest that they had no time to refute
    the “special, distinct prohibition of all new vineyards.” But the
    prohibition on new vineyards never changed, and plaintiffs present
    no rational explanation of their assertion that the “complete and
    singular vineyard ban” would generate a significantly different
    response from the original ban on “[n]ew crop, orchard, vineyard,
    and other crop-based non-livestock agricultural uses.” Moreover,
    plaintiffs in fact responded to the “new” ban on vineyards in the
    April 9 addendum, both in writing (by letter and with the
    submission of two research reports), and at the hearing.
    29
    In addition, there is precedent for the issuance of a staff
    addendum under similar circumstances. In Ross, the court
    rejected a claim that availability of a staff report 13 days before
    the hearing was unreasonable, observing it was nearly twice the
    period (seven days) required by the regulations. 
    (Ross, supra
    ,
    199 Cal.App.4th at p. 939.) As relevant here, an addendum to the
    staff report was issued two days before the hearing. The court
    held the addendum was “not subject to the notice requirement
    under Code of Regulations, title 14, section 13532.” (Ibid.) The
    court observed that, “[i]n the addendum, the commission
    responded to public comments; recommended modification of the
    view corridors in response to public comments; and discussed
    additional biological information specific to the subject property’s
    proposed subdivision.” (Ibid.) The same is true here: the staff
    responded to public comments with a modification of the ban on
    new agriculture.
    Plaintiffs argue Ross does not apply because the addendum
    in that case “made minor changes to the prior commission staff
    report” 
    (Ross, supra
    , 199 Cal.App.4th at p. 915), and did not
    involve a proposed new local coastal plan, but rather was directed
    primarily at a particular beach-front property. These are
    distinctions that make no difference. Ross did not base its analysis
    on a minor-versus-major basis. Nor do we consider the continued
    ban on vineyards to be a major change.
    Further, we note that the commission’s regulations permit a
    local government to amend its land use plan “prior to the
    commencement of the vote” on the plan as submitted, and the
    commission then determines whether or not the amendment “is
    material and includes changes that have not been the subject of
    public review and comment before the Commission.” (Cal. Code
    30
    Regs., tit. 14, § 13536.) If the amendments are minor, or if they
    are material but have been the subject of adequate public comment
    at the public hearing, the commission is to consider the
    amendment and act on the plan as amended rather than as
    initially submitted. (Ibid.) That is analogous to the circumstances
    here. Plaintiffs have not demonstrated either the materiality of
    the changes made in the April 9 addendum or that they were not
    the subject of adequate public comment at the hearing.
    Plaintiffs’ final argument on its due process claim is that the
    trial court erred in refusing to augment the record with documents
    relating to the federal designation of the Santa Monica Mountains
    coastal region as an American Viticultural Area. But plaintiffs did
    not even seek augmentation of the record until after the
    September 5, 2017 hearing on the merits of their writ petition. At
    that hearing, the court resolved all other issues, and the vineyard
    ban was briefed and argued. The court requested supplemental
    briefing, solely on whether the ban on vineyards was supported by
    substantial evidence. Plaintiffs did not request augmentation
    until a month later, contemporaneously with filing their
    supplemental brief.
    The court denied the motion as unauthorized and untimely.
    The court stated that plaintiffs “did not ask, and the court did not
    authorize, a motion to augment the record,” and plaintiffs provided
    “no excuse for their failure to bring this motion at the original writ
    hearing.” The court further stated that the documents could have
    been obtained in time for the commission hearing had plaintiffs
    exercised reasonable diligence. Indeed, plaintiffs “admit that
    many of the documents they seek to add to the Administrative
    Record existed at the time of the Commission’s April 10, 2014
    hearing.”
    31
    Plaintiffs do not explain why the court’s ruling was an abuse
    of discretion, and of course it was not. They simply assert—
    again—that they were “misled” and could have produced more
    evidence to challenge the vineyard ban if more than 24 hours’
    notice had been given, and thus they “were prejudiced by the
    denial of due process.” As we have seen, there was no failure of
    due process. There was likewise no error in the court’s denial of
    plaintiffs’ motion to augment the record.
    5.     The Substantial Evidence Issue
    Plaintiffs contend, in essence, there is no evidence vineyards
    are any worse than other crops that are not subject to a total ban:
    They contend “there was no substantial evidence that vineyards
    were deserving of isolation or distinction as being uniquely
    disruptive of watersheds, erosion, [environmentally sensitive
    habitat areas], scenic views or of any other coastal resource.” Our
    review of the record, like the trial court’s, leads to a contrary
    conclusion.
    There are, in particular, two pieces of evidence—the UCLA
    study (mentioned in the fact section) and expert testimony from
    Dr. Jonna Engel, the commission’s staff ecologist—that directly
    support the commission’s conclusion that vineyards pose a threat
    to coastal resources and therefore should be banned.10 The
    evidence plaintiffs cite, on the other hand, while it supports the
    suitability of lands in the Santa Monica Mountains for vineyards,
    10    There was other evidence as well, including letters and
    statements from various groups and public officials, that supported
    the vineyard ban. The trial court found these documents were “not
    particularly persuasive” because there was no discussion of the
    evidence underlying their conclusions, so they were “not sufficient
    on their own to constitute substantial evidence.”
    32
    does nothing to counter the evidence of environmental harm
    caused by vineyards. As the trial court pointed out, it is feasibility,
    not suitability of the land, that is critical, and feasibility as defined
    in the Coastal Act requires the consideration of environmental
    factors.
    The UCLA study
    The UCLA study sought to identify areas where vineyard
    development could potentially occur, and to identify existing
    vineyards in the area. Plaintiffs cited the study to the trial court
    as “directly on point” and characterized it as “an unbiased report.”
    They emphasized its finding that 62.5 percent of the land in the
    Santa Monica Mountains is favorable for vineyard development.
    Remarkably, however, plaintiffs completely ignored the
    substance of the report. (They do not refer to it at all in their
    appellate briefing.) The abstract of the study begins with the
    observation that, despite conservation efforts, urbanization “has
    already contributed to widespread disturbance throughout the
    [Santa Monica Mountains National Recreation Area (SMMNRA)],
    and recent trends in the development of vineyards could pose
    further threats. Additional vineyard development has the
    potential to severely disturb natural areas, which could result in
    fragmentation and loss of native species.”
    The abstract of the study summarizes: “Analysis indicated
    that unprotected areas in the SMMNRA are at risk of being
    disturbed by vineyard development. Of the 48,394 acres in the
    study site, 62.5% had favorable physical conditions and
    appropriate zoning for development. A land cover analysis
    underscored the potential effects of widespread development as
    74.5% of native vegetation in the study site was at risk.” (Italics
    added.)
    33
    The report explained in its introduction that an increasing
    number of private landowners were beginning to explore
    opportunities for developing hobby vineyards, and “[w]e attempted
    to identify potential areas for vineyard development in order to
    distinguish habitats at risk of disturbance and improve land use
    policy.” The report identified “vegetation types that were at high
    risk of being displaced or disturbed by development.” The study
    explained that “[t]he extent of maximum development and
    displaced vegetation are important due to the adverse effects that
    vineyard development may have on an ecosystem.” The authors
    cited other studies showing that “[d]isplacement of natural
    vegetation is a direct cause of habitat loss and is disruptive to
    ecosystem health,” and that “[d]evelopment effects include
    fragmentation and increased edge effects[,] decreases in habitat
    size and complexity, changes in predominant vegetation types,
    effects on local hydrology, water pollution, soil erosion, and air
    pollution [citations].”
    Dr. Engel’s rebuttal statement
    Testimony at the April 10 hearing likewise supported the
    ban on vineyards. Dr. Engel testified that vineyards present
    “numerous significant adverse impacts upon the native
    Mediterranean habitats” in the Santa Monica Mountains,
    including habitat loss, habitat fragmentation, disruption of wildlife
    corridors, and a significant reduction of biodiversity. “From
    myriad species of plants and animals, to a near monoculture of
    non-native species, peer reviewed research has demonstrated that
    the insect community associated with vineyards tends to support
    more non-native species, and that the modified insect community
    spills over to the adjacent native habitats.”
    34
    Further, “[d]ue to the inherent biology of grapevines,
    vineyards in particular introduce significant negative changes to
    the soil chemistry from the perspective of Mediterranean plant
    communities.” Dr. Engel also testified that, while vineyards in
    general “may not require much fertilization, they typically require
    pesticides and fungicides, which are introduced into the
    surrounding native habitats, including the creeks and streams,
    and watersheds with vineyards.” Other points in her testimony
    are reproduced in the next footnote.11
    Dr. Engel concluded by citing a recent paper in the
    proceedings of the National Academy of Sciences, in which the
    author stated: “ ‘Vineyards have long lasting effects on habitat
    quality, and may significantly impact fresh water resources. In
    addition to introducing sterilizing chemicals and fertilizer, which
    remake the ecosystem, mature vineyards have low habitat value
    11     Dr. Engel countered testimony from Mr. Schmitz of the
    California Coalition of Coastal Farmers that vineyards increase
    soil fertility through nitrogen fixation and mineral depositing. She
    agreed, but observed “[t]his is not a positive for Santa Monica
    Mountains plant communities that are adapted to porous, nutrient
    poor acidic soil. More nutrient rich soils, such as those created by
    vineyards, also tend to facilitate the invasion of non-native
    species.” Dr. Engel also responded to Mr. Schmitz’s testimony that
    wine grapes have deep roots that may serve to stabilize slopes.
    “While grapevines may have deep roots, the native woodland,
    coastal sage scrub and chaparral communities have plant species
    that exhibit root stratification. That is plants with shallow roots,
    moderately deep roots, and deep roots. This pattern of root
    distribution naturally provides great soil stability. It is also
    thought that this is an adaptation of these species to limited water
    resources.”
    35
    for native species, and are visited more often by non-native
    species.”
    As noted above, plaintiffs do not address the evidence in the
    UCLA study, and they refer to Dr. Engel’s testimony only to
    challenge her statement that vineyards “typically require
    pesticides and fungicides,” and to wrongly characterize her
    testimony as “inherently untrustworthy.” Instead, plaintiffs
    contend the evidence “that was specifically related to vineyards”
    was “undisputed that vineyards were ideally suited for the Santa
    Monica Mountains,” as vineyards require much less water and
    thrive on steep slopes and in poor soils. That evidence misses the
    point: As the trial court observed, “suitability does not make
    vineyard development feasible,” because feasibility requires an
    evaluation of environmental, social, and economic factors.
    (§ 30108.) And there is no evidence in the record that counters the
    evidence that vineyards are harmful to the ecosystem and coastal
    resources in the Santa Monica Mountains.12
    In short, we are in complete agreement with the trial court’s
    summary of the substantial evidence in the record: “[V]ineyards
    are harmful to the Santa Monica Mountains ecology because they
    require clearing and scarification, increase erosion and
    sedimentation, require pesticide use, and constitute an invasive
    monoculture. Of these harms, many are inherent in the nature of
    viticulture, and there is no evidence they could be mitigated.
    12    The evidence with which plaintiffs sought to augment the
    record would not help. As the trial court pointed out, the federal
    “American Viticultural Area” designation “makes no findings about
    the environmental harms caused by vineyards or the
    appropriateness of their use,” and “does not counter [the]
    Commission’s evidence that viticulture is harmful to the ecosystem
    and coastal resources of the Santa Monica Mountains.”
    36
    Vineyards increase erosion because the hillsides are planted with
    grapes where the hillsides are bare during winter months and lack
    the root stratification of native vegetation. . . . They create air
    pollution from dust. Grapevines are an invasive monoculture
    species that impact all of the surrounding vegetation and harm
    riparian habitat. . . . They create water runoff and sedimentation
    of streams. The only impacts that could be mitigated [are] the use
    of pesticides, which is already banned under the [local coastal
    plan], and water usage. Under these circumstances, substantial
    evidence supports the Commission’s decision to ban new
    vineyards.”
    DISPOSITION
    The judgment is affirmed. Respondents shall recover their
    costs on appeal.
    GRIMES, Acting P. J.
    WE CONCUR:
    STRATTON, J.
    WILEY, J.
    37
    

Document Info

Docket Number: B287079

Filed Date: 4/1/2020

Precedential Status: Precedential

Modified Date: 4/1/2020