Sierra Club v. County of Fresno ( 2014 )


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  • Filed 5/27/14
    CERTIFIED FOR PUBLICATION
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    FIFTH APPELLATE DISTRICT
    SIERRA CLUB et al.,
    F066798
    Plaintiffs and Appellants,
    (Super. Ct. Nos. 11CECG00726,
    v.                                                11CECG00706, 11CECG00709)
    COUNTY OF FRESNO et al.,
    OPINION
    Defendants and Respondents;
    FRIANT RANCH, L.P.,
    Real Party in Interest.
    APPEAL from a judgment of the Superior Court of Fresno County. Rosendo
    Pena, Jr., Judge.
    Law Office of Sara Hedgpeth-Harris and Sara Hedgpeth-Harris for Plaintiffs and
    Appellants.
    Kevin B. Briggs, County Counsel, Bruce B. Johnson, Deputy County Counsel, for
    Defendants and Respondents.
    Remy Moose Manley, James G. Moose, Tiffany K. Wright and Laura M. Harris
    for Real Party in Interest.
    -ooOoo-
    INTRODUCTION
    In February 2011, the County of Fresno (County) approved the Friant Ranch
    project, a proposed master-planned community for persons age 55 or older located in
    north-central Fresno County (the Project). The Project is located on 942 acres of
    unirrigated grazing land adjacent to the unincorporated community of Friant, below
    Friant Dam and Millerton Lake, near the San Joaquin River.
    This appeal argues that (1) the Project was inconsistent with land use and traffic
    policies in County’s general plan and (2) the environmental impact report (EIR) for the
    Project failed to comply with the California Environmental Quality Act (CEQA).1 The
    CEQA claims challenge the adequacy of the EIR’s discussion of certain issues involving
    (1) treated effluent from the proposed wastewater treatment facilities and (2) air quality
    impacts.
    As to the claims of general plan inconsistency, we conclude that the Project is not
    inconsistent with the land use element, since the agricultural use designation was
    properly changed by amendment, thereby avoiding an inconsistency, and the issues
    regarding traffic policy TR-A.2 were not exhausted during the administrative process.
    We conclude the CEQA claims involving wastewater disposal lack merit because
    the amount and location of wastewater use and disposal and the hydrogeology of the site
    ultimately chosen for the wastewater treatment plant were addressed in sufficient detail
    during the environmental review process.
    As to the CEQA claims involving air quality, we conclude that (1) the EIR was
    inadequate because it failed to include an analysis that correlated the project’s emission
    of air pollutants to its impact on human health; (2) the mitigation measures for the
    project’s long-term air quality impacts violate CEQA because they are vague,
    1       Public Resources Code, section 21000 et seq. All further statutory references are
    to the Public Resources Code unless otherwise indicated.
    2.
    unenforceable and lack specific performance criteria; and (3) the statement that the air
    quality mitigation provisions will substantially reduce air quality impacts is unexplained
    and unsupported. These defects must be cured by the preparation of a revised EIR.
    We therefore reverse the judgment.
    FACTS
    Parties
    Plaintiffs Sierra Club, League of Women Voters of Fresno, and Revive the San
    Joaquin (collectively, plaintiffs) alleged that they are nonprofit organizations concerned
    with protecting the environment, public participation in the political process, and
    protection and restoration of the San Joaquin River, respectively.
    County is the local governmental entity that acted as the lead agency in the
    preparation of the EIR for the Project and, through its board of supervisors, issued
    approvals necessary for the Project. Real party in interest Friant Ranch, L.P. is the
    Project proponent. This opinion refers to County and Friant Ranch, L.P. collectively as
    “defendants.”
    The Project
    The Project proposes the development of the Central Valley’s first master planned
    retirement community for “active adults” (age 55 and older) on a 942-acre site in north
    central Fresno County, just south of the San Joaquin River. The development includes
    single- and multi-family residential units that are age restricted, some residential units
    that are not age restricted, a commercial village center, a recreation center, trails, open
    space, and parks and parkways.
    County approved Alternative 3 of the Project, which includes the construction of
    approximately 2,500 residential units and 250,000 square feet of commercial space on
    3.
    482 acres and the dedication of 460 acres to open space.2 The Project’s construction is
    divided into five phases with an estimated 10-year build-out.
    The residential and commercial growth envisioned by the Project will require
    additional wastewater treatment capacity. The hydrogeology of the site proposed for the
    new wastewater treatment facilities, the concerns about the amount and location of the
    storage, and the application of the facilities’ treated effluent, are the subject of the CEQA
    claims raised in this appeal.
    The initial proposal for the Project placed new wastewater treatment facilities
    adjacent to a small existing plant in the Friant Ranch Specific Plan area and indicated that
    treated effluent might be discharged from the new plant into the San Joaquin River during
    winter months, when demand for irrigation was low.3 County rejected this site and found
    that the alternative site for the new wastewater treatment and disposal facilities on land
    known as the “Beck Property” was environmentally superior. The Beck Property is
    approximately 145 acres located west of Friant Road and south and east of Lost Lake
    Park. The site was used by a gravel extraction operation and presently contains highly
    disturbed agricultural land and an aggregate mining quarry. The quarry will be used to
    create an effluent pond that is capable of storing treated effluent year-round.
    Governmental Approvals
    In October 2007, County distributed a notice of preparation regarding the draft
    EIR for the Project. Two years later, the draft EIR was released. The 45-day period for
    the public to submit comments on the draft EIR and the Project ended on December 15,
    2     As initially proposed, the project planned for the development of 667 acres (as
    opposed to 482 acres) and the construction of 2,996 residences.
    3      The version of the Friant Ranch Specific Plan approved by County’s board of
    supervisors eliminated the possibility of discharging the treated effluent into the river and
    inserted the following: “No discharge of wastewater into the San Joaquin River from the
    wastewater treatment plant will occur.”
    4.
    2009. The final EIR, which included the comments presented and County’s responses,
    was released in August 2010.
    On February 1, 2011, County’s board of supervisors approved the Project by
    adopting resolution No. 11-031, which certified the final EIR and approved General Plan
    Amendment No. 511, which updated the Friant Community Plan (a component of the
    Fresno County General Plan) and authorized the proposed Friant Ranch Specific Plan.
    The update to the Friant Community Plan expanded the area covered from the existing
    unincorporated community of Friant to include the proposed development—that is, the
    area covered by the Friant Ranch Specific Plan. One controversy generated by the board
    of supervisors’ approval of the Project and general plan amendment relates to the
    redesignation of land in the Project area from agricultural use to commercial, residential,
    public facility, and open space uses and whether that redesignation was consistent with
    the general plan’s policy of preserving valuable agricultural land. General Plan
    Amendment No. 511 did not change any of the land use goals and policies set forth in the
    general plan.
    Other County action required for the Project includes amending the Friant
    Redevelopment Plan, changing zoning, and entering into a development agreement for
    the project. The final EIR states that County will consider issuing conditional use
    permits for the wastewater treatment plant and related use of treated wastewater for
    irrigation of Lost Lake Park and other disposal sites.
    This appeal concerns primarily the approvals issued by County because County
    (1) acted as the lead agency for the CEQA review and (2) approved aspects of the Project
    that plaintiffs contend are inconsistent with County’s general plan. Nevertheless, the
    Project cannot be completed without approvals from other state and federal agencies.
    One such state agency involved in approving the Project is the Central Valley
    Regional Water Quality Control Board. The final EIR states that the Project will require
    the Water Quality Control Board to adopt waste discharge and water reclamation
    5.
    requirements for land disposal of treated effluent, adopt a National Pollutant Discharge
    Elimination System (NPDES)4 permit for any discharge of treated effluent to the San
    Joaquin River, issue a Clean Water Act section 401 certification, and take other action.
    In addition, the San Joaquin Valley Air Pollution Control District (Air District)
    might review certain aspects of the Project. The final EIR states that the proposed Project
    might require the Air District to (a) process an air permit application for the wastewater
    treatment plant, (b) process an air impact assessment, (c) issue a dust control permit, and
    (d) take appropriate action to ensure compliance with Air District’s Rule 9510.
    Contents of EIR
    The draft EIR states that the Friant Ranch Specific Plan area was being used for
    cattle grazing and the Project did not propose to convert to nonagricultural uses any (1)
    prime farmland, (2) farmland of statewide importance, or (3) land designated unique
    farmland. Also, no land within the Project area is subject to a Williams Act contract or a
    Farmland Security Zone contract. Based on these facts, the draft EIR stated that the
    growth proposed by the Project was being directed to “an area that does not include
    valuable agricultural land.” Accordingly, the draft EIR concluded that the Project was
    consistent with County’s land use policies designed to protect agricultural resources in
    Fresno County.
    The majority of the land in the Friant Ranch Specific Plan area was designated
    “Agriculture” by County’s general plan. Similarly, most of the land was zoned
    “Exclusive Agriculture (AE-20 and AE-40).” The remainder was zoned for trailer parks
    (about 35 acres), commercial uses (about 4 acres) or residential (about 2.5 acres). As a
    4      The NPDES is part of the federal Clean Water Act, title 33 United States Code
    section 1251, et seq., and sets forth the conditions under which a state with an approved
    water quality control program may issue permits for the discharge of pollutants in
    wastewater. (33 U.S.C. § 1342(b).)
    6.
    result of County’s approval of the Project, the land previously designated for agriculture
    was redesignated for commercial, residential, public facility and open space use.
    The EIR discusses the disposal of effluent resulting from the treatment of
    wastewater at the proposed wastewater treatment plant. The discussion of wastewater
    issues relevant to this appeal is described later in this opinion. (See part III.A, post.)
    Similarly, matters relevant to plaintiffs’ claims that the EIR’s analysis of air quality
    impacts was inadequate and the mitigation measures are flawed are also set forth below.
    (See part IV.A, post.)
    PROCEEDINGS
    Following the Board of Supervisor’s approval of the Project, County filed a notice
    of determination for the Project on February 3, 2011, which triggered the 30-day statute
    of limitations for bringing a CEQA claim. (§ 21167, subd. (c); Guidelines, § 15112,
    subd. (c)(1).)5
    Plaintiffs’ petition for writ of mandate and complaint challenges County’s
    approval of the Project and certification of the final EIR and alleged violations of CEQA
    and the Planning and Zoning Law requirement that land use decisions be consistent with
    the applicable general plan.
    After extensive briefing by the parties, a hearing on the merits was held on
    September 21, 2012. On December 14, 2012, the trial court delivered its ruling from the
    bench, denying all of the claims and entering judgment in favor of defendants.
    In February 2013, plaintiffs filed a notice of appeal from the judgment entered
    against them.
    5      The term “Guidelines” refers to the regulations that implement CEQA and are
    codified in California Code of Regulations, title 14, section 15000 et seq.
    7.
    DISCUSSION
    I.     PROJECT’S CONSISTENCY WITH GENERAL PLAN
    California’s Planning and Zoning Law requires County’s specific plans, zoning
    ordinances, subdivision map approvals and other land use or development actions to be
    consistent with County’s general plan. (Gov. Code, §§ 65454 [specific plans], 65860
    [zoning ordinances] & 66473.5 [subdivision maps].)
    A.       Standard of Review
    A local governing body’s determination that a project is consistent with a general
    plan is subject to judicial review under the abuse of discretion standard. (Families
    Unafraid to Uphold Rural etc. County v. Board of Supervisors (1998) 
    62 Cal. App. 4th 1332
    , 1338 (FUTURE).) An abuse of discretion is established if the governing body did
    not proceed as required by law, made a determination that was not supported by findings,
    or made findings of fact that were not supported by substantial evidence. (Ibid.) A
    finding of fact related to general plan consistency is not supported by substantial
    evidence if, based on the evidence before the local governing body, a reasonable person
    could not have reached the same conclusion. (Ibid.)
    Defendants argue that the deferential arbitrary and capricious standard of review
    should be applied to County’s determination that the project was consistent with the
    general plan.
    We believe that the arbitrary and capricious standard and the abuse of discretion
    standard are the same in substance. (Endangered Habitats League, Inc. v. County of
    Orange (2005) 
    131 Cal. App. 4th 777
    , 782, fn. 3; cf. Haraguchi v. Superior Court (2008)
    
    43 Cal. 4th 706
    , 711-712 [the abuse of discretion standard of review, in the context of a
    motion to recuse a prosecutor, uses an arbitrary and capricious test for the application of
    the law to the facts].) Because this court used the abuse of discretion standard in
    Woodward Park Homeowners Assn., Inc. v. City of Fresno (2007) 
    150 Cal. App. 4th 683
    ,
    8.
    at page 706, we will proceed in this appeal using that formulation of the standard of
    review.
    When the particular issue presented on appeal involves the interpretation of an
    ambiguous provision of a general plan, appellate courts defer to the local government’s
    resolution of that ambiguity so long as the interpretation adopted is reasonable. (Save
    Our Peninsula Committee v. Monterey County Bd. of Supervisors (2001) 
    87 Cal. App. 4th 99
    , 142.) In other words, the local government may adopt any reasonable interpretation;
    it is not required to select the most likely interpretation out of the range of possible
    reasonable interpretations.
    Lastly, appellate courts review the local government’s consistency determination,
    not the decision of the trial court. Consequently, our review is independent of the trial
    court’s decision. (See California Native Plant Society v. City of Rancho Cordova (2009)
    
    172 Cal. App. 4th 603
    , 637 [question on appeal is same question presented to trial court].)
    B.     General Plan Land Use Policy LU-A.1
    The agriculture and land use element of County’s general plan states that its goal
    regarding agriculture is to promote the long-term conservation of productive and
    potentially productive agricultural lands and to accommodate agriculturally related
    activities and support services. To achieve this goal, the general plan lists 21 policies.
    The first is land use policy LU-A.1 (County Ag Use Policy), which states:
    “The County shall maintain agriculturally-designated areas for agriculture
    use and shall direct urban growth away from valuable agricultural lands to
    cities, unincorporated communities, and other areas planned for such
    development where public facilities and infrastructure are available.”
    The parties disagree about the meaning of the County Ag Use Policy and whether
    County violated the policy when it approved the project. We conclude that County
    interpreted the policy in a reasonable manner when it determined agricultural land use
    designations could be changed by amendment and a project is consistent with the County
    Ag Use Policy if some public facilities and infrastructure are available in the Project area.
    9.
    1.     Plaintiffs’ Contentions
    Plaintiffs’ argument that the Project is inconsistent with the County Ag Use Policy
    begins with the contention that the policy is fundamental, mandatory and unambiguous.
    Plaintiffs interpret the mandatory language of the policy to mean that County is
    prohibited from changing the designation of land that has been designated for agriculture.
    Based on this interpretation, plaintiffs conclude that the project is inconsistent with the
    County Ag Use Policy because the Project included the redesignation and rezoning of an
    agricultural area to allow for intensive urban use.
    Plaintiffs also contend that the Project is inconsistent with the County Ag Use
    Policy because the Project is located in an area where public facilities and infrastructure
    are not available.
    2.     Defendants’ Contentions
    As to the interpretation of the County Ag Use Policy, defendants contend it does
    not prohibit changes in land use designations that are accomplished by amendments to
    the general plan. Defendants support this contention by arguing it is unreasonable to
    interpret the policy to mean that land designated “Agriculture” must retain that
    designation in perpetuity.
    Defendants also contend that the project is consistent with the County Ag Use
    Policy because (1) it protects valuable agricultural land by directing growth to less
    productive grazing land and (2) it directs growth to the existing community of Friant and
    ensures appropriate improvement and expansion of public facilities there.
    C.     Changing Land Use Designations
    The first disagreement over the proper interpretation of the County Ag Use Policy
    centers on the phrase “shall maintain agriculturally-designated areas for agricultural
    use .…” This phrase is not interpreted in isolation. Consequently, we will discuss other
    provisions in the general plan that may shed light on its meaning.
    10.
    1.     Other Provisions in General Plan
    Plaintiffs support their view that County is prohibited from redesignating
    agriculturally designated areas to other uses by referring to the general plan’s (1)
    definition of “policy” as a “[s]pecific statement guiding action and implying clear
    commitment” and (2) statement that the “use of the word[s] ‘shall’ in a policy is an
    unequivocal directive .…” Because the general plan does not define the word
    “maintain,” plaintiffs cite a dictionary that defines “maintain” to mean (1) to cause
    something to exist or continue without changing or (2) to keep in an existing state.
    Defendants argue that the “shall maintain” language in the County Ag Use Policy
    does not prohibit general plan amendments that change the designation of land that had
    been designated “Agriculture.” Defendants refer to the provision in the general plan that
    authorizes amendments and County’s history of adopting amendments that change land
    use designation. Defendants also quote three other agriculture policies (LU-H.8, LU-
    F.39 and LU-A.14) as evidence that the general plan recognized situations could arise
    where the redesignation of agricultural land is necessary.
    Amendments to the general plan are addressed in the introduction under the
    heading “REVISING AND AMENDING THE GENERAL PLAN.” The first paragraph
    under the heading states that the general plan “must be flexible enough to respond to
    changing conditions and at the same time specific enough to provide predictability and
    consistency in guiding day-to-day land use and development decisions. Over the years,
    conditions and community needs change and new opportunities arise; the plan needs to
    keep up with these changes and new opportunities.” After mentioning two types of
    periodic review of the general plan, the paragraph concludes:
    “From time to time, the County will be asked to consider proposals for
    specific amendments to the plan. The County will initiate some of these
    proposals itself, but most will be initiated by private property owners and
    developers. Most general plan amendments involve changes in land use
    designations for individual parcels.”
    11.
    2.     Analysis of General Plan’s Provisions
    The starting point for our examination of the meaning of the general plan is similar
    to the analysis used for statutes, contracts and other instruments. The first question is
    whether the provision in question is ambiguous. (E.g., Winet v. Price (1992) 
    4 Cal. App. 4th 1159
    , 1165 [the existence of contractual ambiguity is a threshold question to
    the determination of meaning]; Coburn v. Sievert (2005) 
    133 Cal. App. 4th 1483
    , 1494-
    1496 [initial examination of statute concerns whether statute is ambiguous].) Generally,
    whether language is ambiguous (i.e., susceptible to more than one reasonable
    interpretation) presents a question of law. (Winet v. 
    Price, supra
    , at p. 1165.)
    Where a provision of the general plan is ambiguous, the next and final question is
    whether the local governing body adopted a reasonable interpretation when it resolved
    that ambiguity. (No Oil, Inc. v. City of Los Angeles (1987) 
    196 Cal. App. 3d 223
    , 244
    [addressing whether city council’s interpretation of ambiguous term in general plan was
    arbitrary, capricious or entirely lacking in evidentiary support].)
    We conclude that the statement in the County Ag Use Policy that “County shall
    maintain agriculturally-designated areas for agricultural use” is ambiguous as to whether
    County may amend the general plan and change the designation of land that had been
    designated “Agriculture.” It is possible to interpret this language to mean that County
    may not ever change the agricultural designations made by the general plan.
    Alternatively, it is possible to interpret the language to mean, simply, that County shall
    allow only agriculture uses on land that is designated “Agriculture.” Under this latter
    interpretation, the language does not address the subject of changing land use
    designations—it deals only with the designation that exists at the time in question.
    The general plan’s statement that “[m]ost general plan amendments involve
    changes in land use designations for individual parcels” clearly indicates that land use
    designations are not locked in forever. This reference to “land use designations” is broad
    and, because there is no limiting language, it is reasonable to interpret it as covering all
    12.
    types of land use designations, including the designation “Agriculture.” Therefore,
    General Plan Amendment No. 511, which changed the land use designation of the parcels
    in the Project area, is a type of general plan amendment authorized by the express
    language of the general plan.
    In summary, County’s interpretation of the County Ag Use Policy and the other
    provision of the general plan to allow general plan amendments that change a land use
    designation from “Agriculture” to another use was one of the interpretations to which the
    general plan was reasonably susceptible. Therefore, County did not abuse its discretion
    in adopting that interpretation.
    D.     Available Public Facilities and Infrastructure
    The second dispute over the proper interpretation and application of the County
    Ag Use Policy relates to the provision that County “shall direct urban growth [to areas]
    where public facilities and infrastructure are available.” Plaintiffs cite the EIR’s
    statement that the project is consistent with the County Ag Use Policy “in that growth is
    being directed in an area that does not include valuable agricultural land and where public
    facilities and infrastructure are available or can be expanded.” (Italics added.) In
    plaintiffs’ view, the italicized language does not appear in the policy itself and
    demonstrates that the project is inconsistent with the wording of the County Ag Use
    Policy.
    Defendants argue that plaintiffs’ interpretation of that policy is not reasonable
    because it effectively limits growth to areas where the necessary public facilities and
    infrastructure are in existence and excludes growth in areas where only some public
    facilities and infrastructure are available.
    We conclude that that County reasonably interpreted the County Ag Use Policy to
    mean that County could direct growth to an area where an expansion of existing facilities
    and the development of new facilities was required. County’s interpretation is supported
    by policy PF-A.1, which provides:
    13.
    “The County shall ensure through the development review process that
    public facilities and services will be developed, operational, and available
    to serve new development. The County shall not approve new development
    where existing facilities are inadequate unless the applicant can
    demonstrate that all necessary public facilities will be installed or
    adequately financed and maintained (through fees or other means).”
    (Italics added.)6
    The foregoing policy clearly indicates that new development can be approved in
    an area where the public facilities need to be expanded. Therefore, County did not abuse
    its discretion when it interpreted the County Ag Use Policy to mean that growth was
    allowed in areas that needed to expand public facilities and infrastructure.
    E.     Traffic Policy Addressing Levels of Service
    1.     General Plan Provisions
    The general plan’s “Transportation and Circulation Element” addresses various
    modes of transportation and their related facilities, including streets and highways. Goal
    TR-A is to “plan and provide a unified, coordinated, and cost-efficient countywide street
    and highway system that ensures the safe, orderly, and efficient movement of people and
    goods.” Policy TR-A.1 addresses standards used in the planning and construction of
    streets and roads. Policy TR-A.2 (LOS Policy) provides in full:
    “The County shall plan and design its roadway system in a manner that
    strives to meet Level of Service (LOS) D on urban roadways within the
    spheres of influence of the cities of Fresno and Clovis and LOS C on all
    other roadways in the county.
    “Roadway improvements to increase capacity and maintain LOS standards
    should be planned and programmed based on consideration of the total
    overall needs of the roadway system, recognizing the priority of
    maintenance, rehabilitation, and operation of the existing road system.
    6     This policy is part of the “Public Facilities and Services Element” of the general
    plan. Goal PF-A is to “ensure the timely development of public facilities and to maintain
    an adequate level of service to meet the needs of existing and future development.”
    14.
    “The County may, in programming capacity-increasing projects, allow
    exceptions to the level of service standards in this policy where it finds that
    the improvements or other measures required to achieve the LOS policy are
    unacceptable based on established criteria. In addition to consideration of
    the total overall needs of the roadway system, the County shall consider the
    following factors:
    “a. The right-of-way needs and the physical impacts on surrounding
    properties;
    “b. Construction and right-of-way acquisition costs;
    “c. The number of hours that the roadway would operate at conditions
    below the standard;
    “d. The ability of the required improvement to significantly reduce delay
    and improve traffic operations; and
    “e. Environmental impacts upon which the County may base findings to
    allow an exceedance of the standards.
    “In no case should the County plan for worse than LOS D on rural County
    roadways, worse than LOS E on urban roadways within the spheres of
    influence of the cities of Fresno and Clovis, or in cooperation with Caltrans
    and the Council of Fresno County Governments, plan for worse than LOS
    E on State highways in the county.” (Italics added.)
    The first paragraph of the LOS Policy uses the word “shall” and the last paragraph
    uses the word “should.” The general plan contrasts the meaning of “should” with the
    unequivocal directive “shall” by stating that “the word ‘should’ is a less rigid directive
    that will be honored in the absence of compelling and countervailing considerations.”
    2.      Contentions of the Parties
    Plaintiffs contend that the project is inconsistent with the general plan’s LOS
    Policy because it plans for roadways and intersections operating at worse than acceptable
    levels of service.7
    7      “‘Level of service’ is a way of describing relative traffic congestion on a roadway
    segment or intersection. LOS is stated as a letter grade ranging from A through F, with A
    being the best.” (Friends of Lagoon Valley v. City of Vacaville (2007) 
    154 Cal. App. 4th 807
    , 820, fn.5.)
    15.
    Defendants disagree with this claim of inconsistency and also argue that plaintiffs
    are barred by Government Code section 65009, subdivision (b)(1) from pursuing the
    claim because they did not exhaust their administrative remedies on the issue.
    Plaintiffs’ reply brief addresses exhaustion by contending the claim that the
    project’s contribution to unacceptable levels of service on numerous county roadways
    and intersections is inconsistent with the LOS Policy raised during the administrative
    proceedings. Plaintiffs support their position by citing a single document—the December
    15, 2009, letter in which the City of Fresno set forth its comments to the draft EIR. The
    contents of the letter, which are crucial to the exhaustion issue, are described in part I.E.4,
    post.
    3.     Legal Principles Governing Exhaustion
    The exhaustion of administrative remedies is required by Government Code
    section 65009, which provides in relevant part:
    “(b)(1) In an action or proceeding to attack, review, set aside, void, or annul
    a finding, determination, or decision of a public agency made pursuant to
    this title at a properly noticed public hearing, the issues raised shall be
    limited to those raised in the public hearing or in written correspondence
    delivered to the public agency prior to, or at, the public hearing .…”
    The reference to “this title” means title 7 of the Government Code, which “title
    may be cited as the Planning and Zoning Law.” (Gov. Code, § 65000.) Government
    Code section 65009, subdivision (b)(1) uses mandatory language that states “the issues
    raised [in an action] shall be limited to those raised” administratively. (See Gov. Code, §
    14 [“[s]hall” is mandatory].) As a result, judicial enforcement of the exhaustion
    requirement is not discretionary. Instead, exhaustion is “a jurisdictional prerequisite to
    judicial action challenging a planning decision. [Citations.]” (Friends of Lagoon Valley
    v. City of 
    Vacaville, supra
    , 154 Cal.App.4th at p. 831.)
    The purpose of Government Code section 65009, which also includes a 90-day
    statute of limitations, “is to provide certainty for property owners and local governments
    16.
    regarding decisions made pursuant to this division.” (Gov. Code, § 65009, subd. (a)(3).)
    Certainty is increased by the exhaustion requirement because it prevents administrative
    agencies from being surprised in court and provides them an opportunity to address
    issues and make any necessary findings or changes before the issue is subject to judicial
    review. (Friends of Lagoon Valley v. City of 
    Vacaville, supra
    , 154 Cal.App.4th at p.
    831.) The exhaustion requirement also lightens the burden on the court system by
    encouraging the development of a complete record before the administrative agency and
    allowing the agency to exercise its expertise on the issues raised. (Evans v. City of San
    Jose (2005) 
    128 Cal. App. 4th 1123
    , 1137.)
    The petitioner has the burden of proving an issue was exhausted. (North Coast
    Rivers Alliance v. Marin Municipal Water Dist. Bd. of Directors (2013) 
    216 Cal. App. 4th 614
    , 624.) Whether exhaustion occurred is usually deemed a question of law. (Ibid.) As
    a result, appellate courts conduct an independent (i.e. de novo) review when evaluating
    whether an issue was raised at the administrative level. (Ibid.)
    In the instant case, the primary legal question regarding exhaustion is whether the
    objections submitted to County during the administrative process were sufficiently
    specific to raise the issue of the project’s alleged inconsistency with the LOS Policy.
    Courts usually begin discussing the specificity required by referring to the
    rationale underlying the exhaustion doctrine. In Porterville Citizens for Responsible
    Hillside Development v. City of Porterville (2007) 
    157 Cal. App. 4th 885
    , we stated that
    the objections must be sufficiently specific so that the agency has the opportunity to
    evaluate and respond to them. (Id. at p. 909.) Similarly, in Coalition for Student Action
    v. City of Fullerton (1984) 
    153 Cal. App. 3d 1194
    , the Fourth Appellate District stated:
    “The essence of the exhaustion doctrine is the public agency’s opportunity to receive and
    respond to articulated factual issues and legal theories before its actions are subject to
    judicial review. The doctrine is not satisfied by a relatively few bland and general
    references ….” (Id. at p. 1198; cf. Sierra Club v. City of Orange (2008) 
    163 Cal. App. 4th 17
    .
    523, 535-536 [isolated and unelaborated comments will not suffice; nor will general
    objections to project approval].)
    Some courts have adopted statements that suggest a relatively high degree of
    specificity is required. For example, in Mani Brothers Real Estate Group v. City of Los
    Angeles (2007) 
    153 Cal. App. 4th 1385
    , the Second Appellate District stated: “The ‘exact
    issue’ must have been presented to the administrative agency to satisfy the exhaustion
    requirement. [Citation.]” (Id. at p. 1394.) The rationale given for the “exact issue”
    standard is that requiring less would enable litigants to narrow, obscure or even omit
    arguments before the final administrative authority in the hope a trial court would reach a
    more favorable decision. (North Coast Rivers Alliance v. Marin Municipal Water Dist.
    Bd. of 
    Directors, supra
    , 216 Cal.App.4th at p. 623.)
    Other appellate decisions set forth principles regarding specificity that appear
    more moderate. For example, we have stated that less specificity is required to preserve
    an issue in an administrative proceeding than to preserve an issue for appeal in a judicial
    proceeding because citizens are not expected to bring legal expertise to the administrative
    proceeding. (Woodward Park Homeowners Assn., Inc. v. City of 
    Fresno, supra
    , 150
    Cal.App.4th at p. 712.)
    4.     Comments Presented During Administrative Process
    Plaintiffs attempt to prove exhaustion of the claim that the project is inconsistent
    with the general plan’s LOS Policy by referring to language in the 26-page comment
    letter the city manager of the City of Fresno submitted on the draft EIR. We will discuss
    the portions of that letter that address (1) inconsistencies with the general plan and (2)
    traffic.
    The letter contains six paragraphs of comments under the heading “Chapter 3.9
    Land Use and Planning.” The first sentence of the comments states the objection in
    broad terms: “The Project presents fundamental inconsistencies with the land use and
    planning policies in the County of Fresno General Plan and the General Plans of
    18.
    surrounding cities.” The letter then describes alleged inconsistencies in more detail,
    which include (1) the project’s development of intense urban uses on agricultural land
    and (2) the failure to direct urban development to areas with existing services that support
    development. None of the inconsistencies raised in this portion of the letter mention
    “roadways,” “roads,” “streets,” “highways,” “intersections,” “levels of service,” or
    “traffic.” Furthermore, this portion of the letter makes no reference to transportation
    policies in general or to the LOS Policy in particular.
    The City of Fresno’s comments to “Chapter 3.13 Transportation/Traffic” of the
    draft EIR are set forth at pages 14 through 21 of the letter. The first and third paragraph
    of that discussion states:
    “The EIRs traffic and transportation impacts analysis, and Appendix D
    (Traffic Impact Study, or TIS) is inadequate in many respects.
    “[¶] … [¶]
    “Appendix D indentifies Friant Road and Willow Avenue as the major
    routes providing access to the Project site. Yet the EIR identifies multiple
    road segments and intersections on both Friant Road and Willow Avenue
    as operating at unacceptable levels of service either now or by 2030.
    Furthermore, the EIR concludes that no mitigation can feasibly result in
    either of these two major access routes operating at acceptable levels of
    service. Yet the EIR’s traffic analysis concludes that development under
    the Friant Ranch Specific Plan, on property served by these two
    unacceptably impeded roadways will have absolutely ‘no impact’ to
    emergency services access. The EIR … must explain how it determines
    that access for necessary medical services will not be significantly affected
    by the unacceptable traffic conditions on Friant Road and Willow Avenue.”
    The italicized language was quoted in plaintiffs’ reply brief to support their
    position that the issue regarding the project’s inconsistency with the LOS Policy was
    presented to County during the administrative proceedings and, as a result, the
    administrative remedies were exhausted.
    19.
    5.     Application of Exhaustion Requirement
    Our analysis of whether the contents of the letter satisfy the exhaustion
    requirement starts from the perspective of what the letter omits and what it contains.
    First, the portion of the letter cited by plaintiffs, omits any mention of (1) the
    general plan, (2) the requirement for consistency with the general plan, or (3) any
    statutory provision that requires consistency with the general plan (e.g., Gov. Code, §
    65454).8 In addition, the letter does not cite the LOS Policy or reference the text of that
    policy, either verbatim or in a summarized form.
    Second, the portion of the letter cited by plaintiffs includes the factual assertion,
    which is accurate, that “the EIR identifies multiple road segments and intersections on
    both Friant Road and Willow Avenue as operating at unacceptable levels of service .…”
    This factual assertion appears to provide part of the foundation for the objection the City
    of Fresno set forth in the last sentence of the paragraph. That objection states: “The EIR
    … must explain how it determines that access for necessary [i.e., emergency] medical
    8      This court has concluded that it is possible to exhaust a claim—that is, apprise the
    agency of the relevant facts and issues—without identifying the precise statute at issue.
    (Building Industry Assn. of Central California v. County of Stanislaus (2010) 
    190 Cal. App. 4th 582
    , 597-598 (BIA); accord, McPherson v. City of Manhattan Beach (2000)
    
    78 Cal. App. 4th 1252
    , 1264.)
    In 
    BIA, supra
    , 
    190 Cal. App. 4th 582
    , the petitioner’s administrative challenge to a
    farmland mitigation program added to a county’s general plan included the contention
    that the county did not have the authority to require involuntary agricultural conservation
    easements. (Id. at p. 597.) The petitioner did not refer to Civil Code section 815.3,
    subdivision (b)—the statute that prohibited conditioning the issuance of a land use
    entitlement on the granting of such an easement. (
    BIA, supra
    , at p. 597.) In BIA, we
    concluded the exhaustion requirement was satisfied because the petitioner’s challenge at
    the administrative level adequately raised the issue concerning the county’s authority to
    require such easements. (Id. at p. 598.) Therefore, in the instant appeal, the omission of
    the statutory provision containing the consistency requirement from the City of Fresno’s
    comment letter does not resolve the exhaustion question presented.
    20.
    services will not be significantly affected by the unacceptable traffic conditions on Friant
    Road and Willow Avenue.”
    The paragraph that includes the language quoted by plaintiffs to prove exhaustion
    stands in contrast to other portions of the letter that (1) explicitly mention the general
    plan, (2) articulate an allegation of inconsistency and (3) refer to the requirements of the
    policy in question. As discussed earlier, the section of the letter that addresses land use
    and planning makes the broad assertion that the project presents fundamental
    inconsistencies with the general plan and then sets forth the following specific claim:
    “The policies of directing urban development to incorporated areas with existing services
    to support development and away from agricultural land are contradicted by the Project.”
    This language illustrates that when the City of Fresno wished to raise the question of
    general plan inconsistency it was capable of doing so with direct language. The absence
    of any comparable language in the portion of the letter relied upon by plaintiffs would
    lead an objectively reasonable person reading that part of the letter to infer that the claim
    of general plan inconsistency regarding levels of service for traffic was not being raised
    by the letter.
    As a result, the letter’s reference to unacceptable levels of service on certain road
    segments and intersections did not inform County that it should address whether those
    levels of service were consistent with the general plan’s traffic policies. Thus, County
    was not put on notice that it should explain how it resolved various issues concerning the
    application of the traffic policies to the facts of this case. In particular, County had no
    reason to (1) set forth its interpretation of the LOS Policy, (2) explain how it applied that
    interpretation to the facts of the case, and (3) make any findings of fact that might have
    been necessary to establish that one of the exceptions articulated in the LOS Policy
    applied.
    Accordingly, we conclude the City of Fresno’s comment letter was not specific
    enough to satisfy the exhaustion requirement on the issue of the project’s inconsistency
    21.
    with the general plan LOS Policy. For example, plaintiffs now interpret the language that
    “[i]n no case should the County plan for worse than LOS D on rural County roadways”
    (italics added) to be a clear prohibition. If a claim of inconsistency had been articulated
    during the administrative process, County’s personnel who responded to the public
    comment would have been alerted to the need to set forth their interpretation of the LOS
    Policy, including the meaning of the word “should” and other phrases.9 Because the
    question of general plan consistency was not raised in connection with general comments
    about traffic and levels of service or in connection with specific comment about the LOS
    Policy, County had no reason to set forth its interpretation of that policy or explain how it
    applied the policy to the facts of this case. Consequently, we do not know how County’s
    personnel would have interpreted the policy’s language and whether, if necessary under
    that interpretation, they would have treated this project as an allowable exception to the
    stated levels of service. In short, County was not given an opportunity to respond to the
    factual and legal issues related to the application of the LOS Policy before its actions
    were subject to judicial review. (Coalition for Student Action v. City of 
    Fullerton, supra
    ,
    153 Cal.App.3d at p. 1198.) Therefore, we conclude that the issue of the project’s
    inconsistency with the general plan’s LOS Policy was not exhausted at the administrative
    level.
    II.      CEQA PRINCIPLES
    A.    Standard of Review
    The parties agree that the CEQA claims are reviewed on appeal under the abuse of
    discretion standard set forth in section 21168.5. We concur. Our “inquiry shall extend
    only to whether there was a prejudicial abuse of discretion. Abuse of discretion is
    9      One such phrase is “shall plan … in a manner that strives to meet” the stated levels
    of service.
    22.
    established if the agency has not proceeded in a manner required by law or if the
    determination or decision is not supported by substantial evidence.” (§ 21168.5.)
    Under this abuse of discretion standard, we independently review claims that a
    public agency committed legal error (i.e., did not proceed in the manner required by law)
    in the preparation of an EIR. (Vineyard Area Citizens for Responsible Growth, Inc. v.
    City of Rancho Cordova (2007) 
    40 Cal. 4th 412
    , 426-427 (Vineyard Area Citizens).) In
    comparison, we review claims that an agency committed factual errors under the
    substantial evidence standard. (Id. at p. 426.)
    B.     Rules of Law Governing Adequacy of EIR’s Discussion
    Generally, claims that the information presented in an EIR is legally inadequate
    under CEQA can be divided into two types. The first type involves a situation where the
    EIR does not discuss a topic that a statute, regulation or judicial opinion says must be
    discussed. This type of claim is relatively easy to decide—either the required
    information was in the EIR or it was omitted. (E.g., Laurel Heights Improvement Assn. v.
    Regents of University of California (1988) 
    47 Cal. 3d 376
    , 404 [EIR concluded there were
    no feasible alternative sites for relocation of biomedical research facilities; EIR’s
    discussion was insufficient because it contained no analysis of alternative locations].)
    The second type of claim, which is presented in this case, is more complex. It
    involves an EIR that has at least addressed the required topic and a claim by the plaintiff
    that the information provided about that topic is insufficient. Conceptually, this type of
    claim involves reviewing courts drawing a line that divides sufficient discussions from
    those that are insufficient. Drawing this line and determining whether the EIR complies
    with CEQA’s information disclosure requirements presents a question of law subject to
    independent review by the courts. (Madera Oversight Coalition, Inc. v. County of
    Madera (2011) 
    199 Cal. App. 4th 48
    , 102.) The terms themselves—sufficient and
    insufficient—provide little, if any, guidance as to where the line should be drawn. They
    are simply labels applied once the court has completed its analysis.
    23.
    In Association of Irritated Residents v. County of Madera (2003) 
    107 Cal. App. 4th 1383
    (AIR), this court set forth the following general principles to help define the line
    between sufficient and insufficient discussions in an EIR:
    “When assessing the legal sufficiency of an EIR, the reviewing court
    focuses on adequacy, completeness and a good faith effort at full
    disclosure. [Citation.] ‘The EIR must contain facts and analysis, not just
    the bare conclusions of the agency.’ [Citation.] ‘An EIR must include
    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.] Analysis of environmental effects need not be
    exhaustive, but will be judged in light of what was reasonably feasible.”
    (Id. at p. 1390; see Guidelines, § 15151 [standards of adequacy].)
    This court has also recognized that a good faith effort at full disclosure does not
    mandate perfection and does not require an analysis to be exhaustive. (San Joaquin
    Raptor Rescue Center v. County of Merced (2007) 
    149 Cal. App. 4th 645
    , 653.)
    Because the standard of review established by section 21168.5 refers to a
    prejudicial abuse of discretion, plaintiffs claiming the information in an EIR was
    insufficient must demonstrate that the failure to include relevant information precluded
    informed decisionmaking by the lead agency or informed participation by the public.
    (Madera Oversight Coalition, Inc. v. County of 
    Madera, supra
    , 199 Cal.App.4th at pp.
    76-77; 
    AIR, supra
    , 107 Cal.App.4th at p. 1391.) Plaintiffs need not show that the
    outcome of the administrative process would have been different if the lead agency had
    complied with CEQA’s disclosure requirements. (San Joaquin Raptor Rescue Center v.
    County of 
    Merced, supra
    , 149 Cal.App.4th at p. 653.)
    III.   ADEQUACY OF EIR’s DISCUSSION OF WASTEWATER IMPACTS
    Plaintiffs contend that the EIR’s discussion of wastewater generated by the
    proposed treatment plant lacks sufficient information about (1) the amount and location
    of wastewater application and (2) the hydrogeology of the Beck Property, the site
    selected for the proposed treatment plant and storage pond.
    24.
    A.     Disclosures Regarding Amount of Effluent Produced and Recycled
    1.     Draft EIR
    Section 3.14 (“Utilities and Service Systems”) of the draft EIR described the
    existing water, wastewater treatment, effluent disposal, storm drainage and solid waste
    service in the project area. As to wastewater treatment and effluent disposal, the draft
    EIR set forth various state and federal laws, regulations and other standards that affect
    wastewater service. Then, the draft EIR described the existing facilities for handling
    wastewater in the project area as follows:
    “Nearly all of the buildings in the Friant Community are currently serviced
    by individual septic systems. The Millerton Lake Village Mobile Home
    Park is the only portion of the Friant Community that is currently served by
    a small sewer system package treatment plant. A new wastewater treatment
    plant is needed to provide adequate service levels and accommodate new
    development within the existing Friant Community.”
    The draft EIR addressed the project’s need for a new wastewater treatment plant
    by discussing the possibility of locating a new wastewater treatment facility immediately
    adjacent to the small existing plant. This location is east of Friant Road and north of
    much of the proposed development.
    The draft EIR stated that the proposed wastewater facilities would be built in three
    phases, as the development project is built out. When completed, the facilities would be
    able to handle approximately 800,000 gallons of wastewater per day (roughly 900 acre-
    feet per year). The wastewater would be treated to achieve tertiary quality effluent that
    would meet the state water quality standards for unrestricted use.10
    10     “Tertiary” refers is the third stage of treatment. It means “a wastewater treatment
    process that goes beyond secondary treatment, which may include filtration, coagulation,
    and nutrient removal.” (Cal. Code Regs., tit. 23, § 3671 [definitions of “primary
    treatment,” “secondary treatment” and “tertiary treatment].) Similarly, secondary
    treatment is more extensive that primary treatment, which is a minimum level of
    treatment concerned with separating substances that readily settle or float from the water
    being treated. (Ibid.) The standards for use of recycled water are contained in title 22 of
    25.
    The draft EIR, in six paragraphs at pages 3-368 and 3-369, discussed the use or
    disposal of the wastewater once it has been treated by the new plant. During the summer
    months, all treated effluent was to be used irrigating landscape within the Project and turf
    at Lost Lake Park. During the winter months, when plants and grasses are dormant, the
    treated effluent could not be applied to land at the same rates as summer and, therefore, it
    was to be stored or disposed of in another way. The draft EIR stated that it was doubtful
    that storage ponds could be provided within the Friant Ranch development and proposed
    disposal of the treated effluent by discharge into the San Joaquin River, such discharges
    being limited to the months of October through April. If the requisite approval for the
    proposed discharge could not be obtained, the draft EIR stated that alternative disposal
    options would be considered, “such as storage or percolation at locations in the
    immediate vicinity (see Figure 3.14-4 for Beck Property effluent storage option).” Figure
    3.14-4 presents an aerial view of the Beck Property and Lost Lake Park that includes a
    superimposed outline of a proposed 25-acre storage on the Beck Property.
    A controversial part of the draft EIR’s discussion of effluent disposal and use
    relates to the calculations regarding (1) the amount of treated effluent that would be
    generated by the proposed wastewater treatment plant, (2) potential applications of that
    treated effluent, and (3) the volume of treated effluent that could not be applied and,
    therefore, would have to be stored or discharged. The draft EIR addressed the
    controversy by stating:
    “Water balance calculations have been prepared, demonstrating a balance
    between effluent production and available reclamation areas, allowing
    application of all effluent in a manner that does not exceed the agronomic
    demand of the receiving lands. The calculations take into account the
    effects of a wet (100-year recurrence interval) rainfall year.”
    the California Code of Regulations. (E.g., Cal. Code Regs., tit. 22, § 60304 [use of
    recycled water for irrigation].)
    26.
    The water balance calculations referred to were included in the draft EIR as an
    appendix to an appendix. “Appendix L—Water Quality Impact Analysis” of the draft
    EIR contained three reports. One such report was dated December 2007 and titled “Anti-
    Degradation Analysis—Part 1.” This report assessed wastewater discharge into the San
    Joaquin River and wastewater reclamation for project landscaping and irrigation at Lost
    Lake Park. It had six appendices of its own, including Appendix E, which was labeled
    “Friant Ranch Alternatives Water Balance” (Appendix E).
    Appendix E is a one-page table providing six categories of information for three
    alternatives for the disposal of treated wastewater. The alternatives were described as (1)
    “Irrigate in Summer/Store in Winter,” (2) “Irrigate in Summer/Discharge in Winter,” and
    (3) “Irrigate Year Round/Store on Rainy Days.” The first alternative listed the phase-one
    irrigation area as 85 acres, the build-out irrigation area as 225 acres, and the requisite
    storage volume and storage area as 113,100,000 gallons and 35 acres, respectively.
    The data in Appendix E, together with other information in the draft EIR, can be
    analyzed mathematically to derive additional information about the “Irrigate in
    Summer/Store in Winter” alternative. First, the treatment plant’s expected annual
    production of 900 acre-feet of treated wastewater can be divided by the irrigation area of
    225 acres to conclude that, not factoring in losses from evaporation, each acre in the
    irrigation area would receive 4 acre-feet of treated wastewater per year. Second, the
    information about (1) the amount of treated wastewater that needs to be stored and (2) the
    amount of wastewater produced each day can be used to calculate the number of days
    that wastewater will be stored. When the 113.1 million gallons of stored effluent is
    divided by 800,000 gallons of effluent per day, the resulting figure is approximately 141
    days. Because a year contains 365 days, the 141 days of storage implies an irrigation
    season of 224 days.
    Another report in Appendix L to the draft EIR is titled “Anti-Degradation
    Analysis—Part II” (Part II) and was completed in April 2009, 16 months after the first
    27.
    part. It contained a two-paragraph section of text labeled “Seasonal Storage with
    Irrigation” that stated:
    “Because irrigation demand is seasonal, recycled water produced during the
    winter, when demand is neglible, must be stored for future use or disposed
    of in some manner. Seasonal storage of wintertime flows for subsequent
    irrigation requires physical space for the storage facility. For example, a
    preliminary water balance reveals that a storage pond would need to
    provide approximately 370 acre-ft of storage and would occupy an area of
    approximately 42 acres.”
    Part II then discussed possible locations for such a storage facility and concluded
    that, with the exception of the Beck Property, no available site was suitable for such a
    storage pond. It is unclear whether Part II’s reference to the “preliminary water balance”
    meant the same water balance set forth in Appendix E. The numbers presented in Part
    II—42 acres and 370 acre-feet—do not appear in Appendix E, which lists 35 acres as the
    storage area needed for approximately 113.1 million gallons (i.e., 347 acre-feet) of
    wastewater.11 The larger storage volume mentioned in Part II implies more days of
    storage are needed, which implies a shorter irrigation season. The calculations show
    storage for approximately 151 days of the plant’s output, which is the number of days
    from November 1st to March 31st, inclusive (nonleap year).
    A reader of the draft EIR and its attachments would be confused about the number
    of acres needed for the effluent storage pond because the numbers provided are not
    consistent. Figure 3.14-4 (October 2009) in the draft EIR shows a proposed 25-acre
    storage pond on the Beck Property. Yet, Appendix E indicates that 35 acres of storage is
    needed for the “Irrigate in Summer/Store in Winter” alternative. Also, the discussion in
    11    Because one acre-foot equals 325,851 gallons (see O.W.L. Foundation v. City of
    Rohnert Park (2008) 
    168 Cal. App. 4th 568
    , 576, fn. 2), 113.1 million gallons equal
    approximately 347 acre-feet. The 370 acre-feet referenced in Part II equals
    approximately 120 million gallons.
    28.
    Part II of the anti-degradation analysis indicates that a 42-acre storage pond would be
    needed.
    2.     Final EIR
    The final EIR was released in August 2010. Section 2.4 contained the project
    description and addressed the treatment and disposal of wastewater as envisioned at that
    time. The project description stated that permits were required from the Regional Water
    Quality Control Board for “irrigation with treated effluent of Specific Plan landscaping
    and off-site disposal of treated effluent on suitable nearby lands such as the Beck
    Property (identified in Figure 2-6) and/or Lost Lake Park (and, if sufficient winter land
    disposal areas are not available, seasonal discharge to the San Joaquin River) .…” (Fn.
    omitted.) The footnote described the Beck Property as the location of an effluent storage
    pond, but not as an alternate site for the treatment plant. The footnote also provided
    information about the proposed storage pond and how the stored effluent would be used,
    stating that (1) the mining pit at the north end of the Beck Property would be used as the
    storage pond for seasonal irrigation of the remaining irrigable land on the Beck Property,
    (2) a maximum of approximately 100 days of effluent would be stored, (3) a pipeline
    would carry the effluent from the wastewater treatment plant to the Beck Property, and
    (4) the recycled wastewater would be applied to the Beck Property at agronomic rates.
    The final EIR also contained comments to the draft EIR and County’s responses.
    One comment criticized the generality of the water balance information in the draft EIR
    and stated it was difficult to ascertain the precise water balance for the project. In
    addition, the comment asserted that Friant Ranch, L.P. “should prepare a water balance
    that compares recycled water produced and recycled water demand on a monthly basis.”
    (Italics omitted.) County’s response provided in part:
    “A water supply balance has been conducted for the Project to determine
    and plan for expected effluent supply and demand. Effluent will be applied
    to landscape irrigation use as needed (during irrigation season from spring
    to fall) and excess effluent (e.g., effluent during winter months not
    29.
    otherwise disposed of) would be stored in tanks or ponds located onsite or
    at the off-site disposal sites for subsequent use onsite (see e.g., DEIR page
    366). The Beck property disposal option includes over-winter storage,
    where effluent would be held until it could be used for irrigation. The
    water balance shows the Beck Property has capacity to provide 100 days
    storage, which is sufficient to accommodate wastewater generated by the
    Project, with enough remaining land to use the balance of reclaimed water
    for agriculture irrigation after supplying 400 acre-feet to the development
    areas of the Specific Plan Area for landscape irrigation.… The excess
    effluent will be used off-site, once the on-site demand is met.”
    The final EIR included a March 2009 memorandum prepared by Live Oak
    Associates, Inc., an ecological consulting firm, that analyzed the biological resources
    associated with the Beck Property. The memorandum was designated as Appendix Q to
    the final EIR. It set forth the conclusion that the use of tertiary treated effluent to irrigate
    crops on the Beck Property during the spring, summer, and fall, and the storage of
    effluent in the existing mining pit, would have a negligible impact on the San Joaquin
    River. This conclusion was based on the factual assertion that effluent applied to the
    Beck Property to irrigate crops and the effluent stored in the pond would not reach the
    river.
    3.     Planning Commission Recommendation
    After the final EIR was distributed in August 2010, County’s planning
    commission reviewed the project and the final EIR and issued a staff report. The staff
    report was dated October 7, 2010, and recommended the Beck Property as the
    environmentally superior location for the wastewater treatment plant. In addition, the
    planning commission recommended that there be no discharge of treated wastewater
    from the plant into the San Joaquin River. As a result of these two recommendations,
    more scrutiny was placed on whether there was enough storage capacity at the Beck
    Property to hold the treated effluent during the winter months and what, if anything,
    would happen to the treated effluent while it was stored. For example, one concern was
    whether the stored effluent would seep into the river.
    30.
    4.     Infrastructure Master Plan
    Some of the concerns about the Beck Property and the winter storage of effluent
    were addressed in the Friant Ranch Infrastructure Master Plan dated September 2010
    (IMP). The IMP addressed a smaller version (i.e., fewer residences) of the Friant Ranch
    Specific Plan than initially proposed. Under the scaled-down version, the expected
    wastewater production from the residences at Friant Ranch, commercial and industrial
    flows, and the existing and future uses in the Friant Community Plan area was estimated
    at 625,000 to 725,000 gallons per day or up to 815 acre-feet per year. This volume of
    effluent is about 10 percent less than the 900 acre-feet per year discussed in the draft EIR.
    The IMP stated that the preferred alternative for winter effluent disposal was
    storage in the existing pond at the Beck Property and that the existing size of the pond
    was “more than adequate to provide 100-day storage of over-winter effluent” and “[w]ith
    a total available capacity of approximately 600 ac-ft, at project build-out, this pond
    actually provides for over a year of storage of effluent.”12 Figure 7 in the IMP is a map
    of the Beck Property that shows the location of the proposed treatment plant and an
    outline of the effluent storage pond, which is significantly larger than the outline of the
    25-acre storage pond shown on a map in the draft EIR. Figure 7 helps resolve any
    confusion about the size of the proposed storage pond that might have been created by
    the various descriptions in the draft EIR and its attachments.
    The IMP also addressed the project’s water balance, which is a broader water issue
    than balancing wastewater production with application and storage. Effluent
    12      This statement that the 600 acre-feet of storage represents over a year of effluent
    storage, when read in context, is referring to the effluent production of the development
    proposed, not the total production (i.e., 815 acre-feet per year) of the wastewater
    treatment plant, which included contributions from the Friant Community Plan area, not
    just the development within the Friant Ranch Specific Plan area.
    The IMP identifies an alternate plan for disposal of winter effluent that involves
    the discharge to the San Joaquin River during the months of October through April.
    31.
    reclamation—that is, use of recycled water for irrigation—is a part of the project’s
    overall water balance. The IMP stated that, at project build-out, about 575 acre-feet of
    recycled water per year13 would be available for irrigation on the project site and the
    Beck Property, which amount would be sufficient to irrigate approximately 120 to 150
    acres. The project’s roadways, landscaped slopes, parks, parkways, and commercial and
    activity centers contains about 85 irrigation acres and the remaining 35 to 65 acres would
    be located on the Beck Property.
    The IMP does not discuss in specific terms how the remainder of the effluent from
    the treatment plant would be used. Instead, it includes a general statement (much like the
    statement in the draft EIR) that water balance calculations have been prepared and those
    calculations demonstrate “a balance between effluent production and available
    reclamation areas, allowing application of all effluent in a manner that does not exceed
    agronomic demand of the receiving lands.” Whether this general statement is intended to
    cover the 815 acre-feet of total effluent production or just the effluent attributable to
    Friant Ranch is not clear.
    5.     Two Hearings by the Board of Supervisors
    On December 7, 2010, County’s board of supervisors held a public hearing where
    one of the agenda items was the consideration of the Project and the final EIR. At the
    hearing, concerns on many topics were expressed, including locating the proposed
    wastewater treatment plant and storage pond in the San Joaquin River bottom. A vote on
    the approval of the Project was not taken at that hearing. Instead, the board of
    supervisors decided that issues raised at the hearing should be clarified. Accordingly,
    13     The estimate of 575 acre-feet per year is based upon a combined residential and
    commercial flow of approximately 510,000 gallons per day. This number does not
    include the 165,000 gallons per day of projected peak flow from the Friant Community
    Plan area. Thus, the project’s water balance, as discussed in the IMP, does not address
    how all of the treated effluent (i.e., 815 acre-feet per year) produced by the treatment
    plant would be used.
    32.
    they continued the matter to the February 1, 2011, hearing and allowed further comments
    and rebuttal.
    At the February 1, 2011, hearing of County’s board of supervisors, the wastewater
    treatment plant and associated issues were addressed again. Travis Crawford from the
    Quad Knopf consulting firm testified that the Beck Property, a former gravel quarry, was
    identified as the environmentally superior site for the plant and effluent storage and
    disposal. He also stated that, at full build-out, there was enough area at the Beck
    Property and the open spaces areas of the Friant Ranch Specific Plan to use the
    wastewater without discharging into the San Joaquin River.
    Joe Glicker works for CH2M Hill, the company designated to design, build and
    operate the proposed wastewater treatment plant. He testified about the plant and the
    storage capabilities planned for the Beck Property. The slides Glicker used at the hearing
    were printed out and included in the administrative record. Glicker addressed a scenario
    of 240 to 250 million gallons of sewage being delivered to the treatment plant and
    producing 240 to 250 million gallons of effluent—that is, recycled water. He stated “at
    full capacity of the plant, you would get between 240 to 250 million gallons of sewage
    that goes into the plant that all comes out as recycled water and would go into the
    pond .…” These figures, when reduced to gallons per day, equal approximately 675,000
    to 685,000 gallons per day, which is in the middle of the range of 625,000 to 725,000
    gallons per day discussed in the IMP.
    Glicker presented a slide showing that all effluent would be reused for irrigation
    and none would be discharged into the river. His figures included 15 million gallons
    (about 46 acre-feet) being added to the storage pond by rainfall and losses of 75 million
    gallons (about 230 acre-feet) to evaporation and 3 to 4 million gallons (about 9 to 12
    acre-feet) to percolation. The other two uses were Friant Ranch irrigation at 110 to 120
    million gallons and farm reuse at 65 million gallons.
    As to storage capacity and the system in general, Glicker stated:
    33.
    “The reuse system as we’ve looked at it is very well thought out. The pond
    is an oversized pond, a large amount of storage. In a typical year, there’s
    about a year and a half of storage in the pond. The kinds of landscape and
    agricultural uses and the crops that ha[ve] been selected to be used on the
    Beck property are the kinds of crops that use reused water well. So it is a
    system that we feel adequately balances the water and the water that’s
    going into the plant will get used in the reuse operations.”
    Glicker’s slide about the uses of the effluent appears to be the only document in
    the administrative record that provides figures for all inflows into the pond and for all the
    ways that water in the pond could leave.
    B.     Adequacy of Disclosures Concerning Wastewater
    1.     Contentions of the Parties
    Plaintiffs contend that the EIR lacked sufficient detail about the amount and
    location of wastewater discharge and use. The lack of detail, they argue, makes it
    impossible to ascertain how it was determined that there could be a balance between
    effluent production and its subsequent storage and disposal.
    Defendants contend that they provided more than adequate information about the
    wastewater treatment plant and its environmental impacts because (1) even if treated
    wastewater reached the San Joaquin River, the wastewater would not cause significant
    impacts; (2) the EIR provided adequate detail regarding the amount and location of
    wastewater discharge; (3) the issue regarding the amount and location of wastewater
    discharge and use was not administratively exhausted; and (4) the issue was not raised in
    the trial court and thus should not be addressed on appeal.
    2.     Sufficient Detail Was Provided
    We disagree with plaintiffs’ argument that the draft EIR did not show how effluent
    production, storage and disposal could be balanced.
    When the information in Appendix E is considered with information disclosed in
    the text of the draft EIR and a few mathematical calculations are performed, the reader is
    able to understand how a year’s production of effluent will be handled over the course of
    34.
    a year and the amount of land on which it will be applied for irrigation. In particular,
    under the irrigate-in-summer-and-store-in-winter alternative, the 900 acre-feet of effluent
    expected to be produced by the plant at project build-out would require winter storage of
    113.1 million gallons (i.e., 347 acre-feet) of effluent. Also, Appendix E’s reference to the
    irrigation of 225 acres can be compared to the 900 acre-feet of treated effluent generated
    per year to deduce that, on average, four acre-feet of effluent would be applied to each
    acre of land during the irrigation season.14
    As to the location of the effluent application, the draft EIR indicates that “the
    Project proposes to use all effluent for a combination of irrigation of landscape features
    within the Friant Ranch Specific Plan development and turf at Lost Lake Park or other
    suitable disposal area in the immediate vicinity.” While this statement about location is
    general in nature, we conclude that it is legally sufficient for a draft EIR because it
    provides enough detail to enable members of the public to present comments during the
    administrative review process about the location of effluent application and its potential
    environmental impacts. (See 
    AIR, supra
    , 107 Cal.App.4th at p. 1390.)
    Moreover, the final EIR provided more specific information, which eliminated
    some of the generality of the disclosure in the draft EIR. In particular, the final EIR
    included the response to comment No. 28.14, which stated that the Beck Property had
    “enough remaining land to use the balance of reclaimed water for agriculture irrigation
    after supplying 400 acre-feet to the development areas of the Specific Plan Area for
    landscape irrigation. The Project is not relying on 100% of the anticipated effluent to
    contribute towards onsite landscaping within the Specific Plan Area throughout the year.
    14      This estimate of four acre-feet per acre does not account for losses due to
    evaporation and percolation and gains from rainfall. Glicker’s figures indicated a net loss
    of approximately 25 percent of the effluent produced, which, if applied to the four acre-
    feet estimate, would reduce it to three acre-feet.
    35.
    The excess effluent will be used off-site, once the on-site demand is met.”15 We
    conclude that this disclosure provides sufficient detail about the location of the effluent
    application—namely, the Beck Property and the Specific Plan area—to enable the public
    and decision makers to understand the location of the proposed effluent application and
    consider its potential impacts. (See 
    AIR, supra
    , 107 Cal.App.4th at p. 1390; Guidelines,
    § 15151 [evaluation in EIR need not be exhaustive].)
    Plaintiffs’ opening brief argues that the statement about the project’s use of 400
    acre-feet annually “fails to account for the entire 900 AFY of wastewater that the Project
    will generate.” First, this argument does not reflect the wastewater production of
    Alternative 3, the smaller version of the project that was approved. Under Alternative 3,
    the treatment plant’s wastewater production is not expected to exceed 815 acre-feet per
    year. Second, the final EIR states that the excess effluent will be applied to the Beck
    Property, which has enough remaining land (i.e., land besides that used for the
    wastewater treatment plant and storage pond) to use the balance of the effluent for
    agriculture irrigation. Therefore, the final EIR does account for the application of all of
    the effluent produced by the wastewater treatment plant over the course of a year.
    Plaintiff also argues that the draft EIR does not indicate that the Beck Property has
    the capacity to store all of the effluent generated during the nonirrigation season. This
    alleged shortcoming has some merit because the draft EIR referred to a 25-acre storage
    pond on the Beck Property and Appendix E indicated that a storage pond of 32 acres was
    15      The conclusion that the Beck Property and Specific Plan area were sufficient to
    use all recycled water was confirmed by the additional detail provided by Glicker at the
    board of supervisors’ February hearing. His slide addressed farm use at the Beck
    Property, irrigation in the Specific Plan area, losses to evaporation and percolation, and
    gains from rainfall.
    36.
    needed for the irrigate-in-summer-and-store-in-winter alternative.16 In addition, the final
    EIR and IMP refer to 100-day storage capacity, which is unfortunate in view of the
    statements that the months of no irrigation demand typically are October through April, a
    period much longer than 100 days. However, the concerns generated by the discrepancy
    in pond acreage, and the possibility that 100 days of storage was insufficient, might be
    viewed as being addressed by the general assurance in the final EIR that the Beck
    Property storage capacity was sufficient to accommodate the wastewater generated by the
    project. Also, concerns are addressed by the maps included in the IMP and its statements
    that (1) the existing size of the pond on the Beck Property was more than adequate to
    provide 100-day storage of effluent produced during the winter and (2) at project build-
    out, the pond’s total available capacity would be approximately 600 acre-feet. Because
    the upper limit of estimated wastewater production was 815 acre-feet per year, a storage
    pond with a capacity of 600 acre-feet storage is adequate to accommodate the effluent
    produced by the treatment plant during the winter. Therefore, any shortcomings in the
    draft EIR about storage capacity were addressed in sufficient detail during the
    environmental review process. Also, the record contains substantial evidence to support
    the final EIR’s statement that adequate storage capacity exists at the Beck Property.
    Plaintiffs also argue that the final EIR added to the confusion about wastewater
    balance by deleting the draft EIR’s explanation of plans for disposal during the winter
    months. We conclude that the final EIR was not confusing on this point because the
    irrigate-in-summer-and-store-in-winter alternative was recommended to the board of
    supervisors and approved by them. This alternative provides for winter storage rather
    than winter disposal. Therefore, the discussion of possible methods of winter disposal,
    such as discharge into the San Joaquin River, was not relevant to the recommendations
    16     Appendix E also listed 113.1 million gallons as the volume of effluent to be stored
    under the irrigate-in-summer-and-store-in-winter alternative, a volume equal to
    approximately 347 acre-feet.
    37.
    being made or approved and the continued inclusion of that information was unnecessary.
    In short, deleting the reference from the final EIR was consistent with the board of
    supervisors’ decision to prohibit the discharge of effluent into the San Joaquin River and
    simplified matters by eliminating the discussion of an alternative that was being
    abandoned. Consequently, we reject plaintiffs’ argument that County violated CEQA by
    approving a final EIR that deleted a discussion contained in the draft EIR.
    In summary, we conclude that the various arguments presented by plaintiffs have
    not established that the CEQA documents provided insufficient detail regarding the
    amount and location of wastewater disposal.
    3.     Other Issues
    For purposes of creating a full record, we will address briefly other issues raised
    by defendants. First, we conclude that the issue regarding the adequacy of the disclosures
    about the amount and location of wastewater disposal was exhausted during the
    administrative process by comment No. 28.14 and a letter from plaintiff Revive the San
    Joaquin River.17 Second, because (1) issues concerning the adequacy of a CEQA
    disclosure present questions of law and (2) matters involving disposal of wastewater
    affect the public interest, we have exercised our discretion and considered plaintiffs’
    argument on appeal even though it was not presented to the trial court. (See Woodward
    Park Homeowners Assn., Inc. v. City of 
    Fresno, supra
    , 150 Cal.App.4th at pp. 712-714
    [issue concerning legal adequacy of EIR allowed to be raised for first time on appeal].)
    Third, defendants’ argument that their disclosure was legally adequate because the
    opinions provided by experts constitute substantial evidence is off point. The existence
    17     The undated comment letter raised concerns about wastewater and stormwater and
    appears to have been presented at or shortly after the December 7, 2010, board of
    supervisors meeting. The letter asked for the identification of lands capable of accepting
    the recycled water applications and an assessment of impacts “so that application of
    recycled water [is] consistent with potential irrigable acreage.”
    38.
    of substantial evidence in the record does not mean that sufficient information was
    disclosed—they are separate legal issues. Fourth, we are not persuaded by defendants’
    argument that plaintiffs failed to demonstrate prejudice because the EIR asserted that
    there would be no significant adverse environmental impact if tertiary treated effluent
    reached the San Joaquin River. The board of supervisors did not necessarily agree with
    that particular assertion when they certified the EIR—they could have been convinced by
    the alternate position that it was improbable that any effluent would reach the river.
    C.     Hydrogeology of Beck Property
    1.     Arguments Made to the Trial Court
    The opening brief plaintiffs filed in the trial court contained (1) a heading that
    asserted the EIR’s analysis of the water quality impacts associated with the proposed
    wastewater treatment facility was inadequate and (2) one related subheading that asserted
    the “EIR fails to adequately analyze potential discharge of effluent to the River.”
    (Underscoring omitted.) Plaintiffs argued that an adequate analysis would have described
    the hydrogeology of the Beck Property and analyzed the hydrological connection
    between the proposed effluent storage pond and the San Joaquin River.
    Plaintiffs acknowledged a discussion in the final EIR (which relied upon a 2009
    memorandum by Provost & Pritchard) that concluded: “[D]ue to the impermeable soil
    conditions and the direction of groundwater flow underlying the site, it is unlikely that a
    hydrologic connection exists between the groundwater and the San Joaquin River such
    that later groundwater seepage of treated wastewater into the San Joaquin River from the
    [Beck] Property would occur.”18 Plaintiffs argued to the trial court that this assessment
    18      The final EIR also stated that lateral migration of water held in the storage pond
    on the Beck Property to the river would be precluded by the nature of the lateral soils and
    the distance to the river. As the downward migration, the final EIR stated that was not a
    possibility because the 25-acre storage pond has been excavated to hard, resistant and
    impermeable granitic bedrock. The absolute nature of this statement was contradicted by
    39.
    “was put in serious doubt by [(1)] the testimony and expert opinion of Dr. Robert D.
    Merrill,” a geology professor, and (2) a study that was included in an earlier EIR.
    Defendants responded to plaintiffs’ arguments by filing a joint opposition brief
    that asserted substantial evidence supported County’s conclusion that operating a
    wastewater treatment plant on the Beck Property would not adversely affect the San
    Joaquin River. Defendants referred to studies and testimony of its expert that recycled
    water stored in the pond on the Beck Property would not reach the river. As an
    alternative, defendants also argued the EIR determined that even a direct discharge of the
    treated effluent would have no significant impact on the river and, therefore, seepage
    could not have a significant adverse impact.
    The trial court rejected plaintiffs’ claims, stating that a battle-of-the-experts
    situation existed and the court could not substitute its decision for County’s decision
    where that decision was supported by substantial evidence.
    2.     Plaintiffs’ Contentions on Appeal
    On appeal, plaintiffs have focused their argument on the adequacy of the draft
    EIR, rather than the final EIR. They argue that the “failure to disclose and discuss
    information about the hydrogeology of the Beck Property in the DEIR precluded
    informed public review and scrutiny of the decision to approve wastewater treatment,
    storage, and discharge on the Beck Property.”
    Plaintiffs rely on this court’s decision in San Joaquin Raptor/Wildlife Rescue
    Center v. County of Stanislaus (1994) 
    27 Cal. App. 4th 713
    , a case in which the plaintiffs
    challenged the adequacy of a final EIR prepared for a residential and commercial
    development project. The rescue center argued the inadequate description of the existing
    environmental setting of the site and surrounding areas made it impossible to determine
    Glicker, who estimated three to four million gallons of treated effluent would be lost
    from the pond each year due to percolation.
    40.
    from the final EIR whether wetlands existed on the site. (Id. at p. 722.) The trial court
    rejected the claim, but this court reversed and directed the trial court to require the
    preparation of an EIR that accurately described the site and surrounding environs. (Id. at
    pp. 742-743.)
    3.    Analysis
    The challenge presented in San Joaquin Raptor/Wildlife Rescue Center v. County
    of 
    Stanislaus, supra
    , 
    27 Cal. App. 4th 713
    , concerned the adequacy of the final EIR
    description of the existing environmental setting. In discussing that challenge, this court
    discussed the contents of the draft EIR at length. (Id. at pp. 723-728.) Our discussion
    demonstrated that the draft EIR’s description of the environmental setting site of the
    project site and surrounding area was “inaccurate, incomplete and misleading” (id. at p.
    729) and that wetlands were an important aspect of the environment that should have
    been described and analyzed (id. at pp. 724-725). Our discussion, however, did not
    establish new rules of law heightening the disclosure required in a draft EIR or
    preventing a final EIR from curing a draft EIR’s omission of information. Indeed, the
    discussion of the draft EIR preceded our resolution of the ultimate question—whether the
    final EIR was legally adequate. (Id. at pp. 728-729.) In resolving that question, we
    stated that the final EIR “does not reflect even minimal investigation into the exact
    location and extent of riparian habitats either adjacent to or within the site.” (Id. at p.
    728.) Our holding referred to the final EIR, not the draft:
    “Without accurate and complete information pertaining to the setting of the
    project and surrounding uses, it cannot be found that the FEIR adequately
    investigated and discussed the environmental impacts of the development
    project. The failure to provide clear and definite analysis of the location,
    extent and character of wetlands possibly within and definitely adjacent to
    the development project and the failure to discuss [San Joaquin Wetlands
    Farm], precludes this court from concluding that all the environmental
    impacts of the development project were identified and analyzed in the
    FEIR.” (Id. at p. 729.)
    41.
    The instant case is distinguishable from San Joaquin Raptor/Wildlife Rescue
    Center v. County of 
    Stanislaus, supra
    , 
    27 Cal. App. 4th 713
    , in at least two important
    ways.
    First, the draft EIR for the Project actually mentioned the point in dispute—that is,
    the possibility of seepage of wastewater from the Beck Property to San Joaquin River. At
    page 3-210, the draft EIR states: “Due to impermeable soil conditions, it is unlikely that
    a hydrological connection exists between the groundwater and the surface water such that
    wastewater applied to irrigate onsite landscaping, the Beck Property, Lost Lake Park, or
    similarly situated lands would seep into the San Joaquin River through groundwater.”
    This disclosure set forth the position that a hydrological connection was unlikely and, as
    a result, allowed those who disagreed to challenge that conclusion during the subsequent
    environmental review process.
    Second, after the release of the draft EIR for the Project, the environmental review
    process (which included the submission of public comments, the publication of responses
    in a final EIR, and further public hearings) produced further information and analysis
    regarding the possible hydrologic connection between the Beck Property and the river.
    The documents generated, which are included in the administrative record before this
    court, directly contradict plaintiffs’ claim that the inadequacy of the draft EIR precluded
    public review and scrutiny of the use of the Beck Property as a wastewater storage and
    application site.
    Therefore, unlike the circumstances in San Joaquin Raptor/Wildlife Rescue Center
    v. County of 
    Stanislaus, supra
    , 
    27 Cal. App. 4th 713
    that led to our conclusion that the
    final EIR was inadequate, the circumstances of the instant case show that the subject of
    the alleged inadequacy was mentioned in the draft EIR and expanded upon in the final
    EIR. Accordingly, we reject plaintiffs’ position that the disclosures in the draft EIR
    regarding the hydrogeology of the Beck Property were prejudicially inadequate and
    42.
    require this matter be remanded with directions for County to prepare a further analysis
    of the subject.
    IV.    ADEQUACY OF EIR’s DISCUSSION OF AIR QUALITY IMPACTS
    A.     Overview of EIR’s Air Quality Discussion
    Chapter 3 of the EIR addresses the project’s setting, impacts and mitigation
    measures. Air quality is addressed in section 3.3.
    Subsection 3.3.1 of the EIR describes the regulatory setting—that is, the federal
    and state agencies that regulate air quality and the applicable statutes, regulations,
    policies and plans. Among other things, subsection 3.3.1 contains a table of the National
    Ambient Air Quality Standards (NAAQS) and corresponding California standards for
    certain pollutants, including ozone, particulate matter 10 microns in diameter or smaller
    (PM10), fine particulate matter (PM2.5), carbon monoxide, nitrogen dioxide, sulfur
    dioxide and lead.19
    Subsection 3.3.2 describes the project’s physical setting in a manner relevant to
    the air quality issues, including the fact that the project is located in the San Joaquin
    Valley Air Basin, which is the lower half of California's Central Valley. The EIR states
    that (1) the basin’s ozone problem ranks among the most severe in California and (2)
    under the NAAQS and California’s standards, Fresno County is designated a severe non-
    attainment area for ozone and a non-attainment area for PM10. Subsection 3.3.2 also
    provides a general description of the criteria air pollutants; these descriptions usually
    include a paragraph addressing the adverse health effects associated with exposure to the
    pollutant.
    19     The EIR states that these pollutants are commonly referred to as “criteria air
    pollutants” because they “are the most prevalent air pollutants known to be deleterious to
    human health and extensive health-effects criteria documents are available ….”
    43.
    Subsection 3.3.3 describes the criteria used to evaluate the air quality impacts.
    They include the “thresholds of significance”20 adopted by the Air District and the
    criteria in CEQA Appendix G. Also, a software program, URBEMIS, was used to
    estimate the amount of air emissions the development would generate. These estimates,
    and the thresholds of significance, are stated in tons per year.
    Subsection 3.3.4 contains the impact analysis. The short-term construction
    emissions are analyzed separately from the long-term, ongoing area and operational
    emissions.21 Specifically, Impact #3.3.1 addresses construction emissions and Impact
    #3.3.2 addresses the long-term emissions primarily related to the activities that will occur
    indefinitely as a result of the new development. The primary source of the latter type of
    emissions is vehicular traffic.
    The estimate of the project’s long-term emissions and the application of the Air
    District’s thresholds of significance produced the conclusion that the project would have
    a significant adverse effect on air quality. As a result, the EIR proposed Mitigation
    Measure #3.3.2 and stated that the measures would reduce the impacts, but not below the
    thresholds of significance. Whether Mitigation Measure #3.3.2 complies with various
    CEQA requirements is among the issues raised on appeal; the actual mitigation
    provisions are discussed below.
    20     Guidelines section 15064.7, subdivision (a) encourages public agencies to develop
    and publish thresholds of significance, which are “an identifiable quantitative, qualitative
    or performance level of a particular environmental effect ….” Noncompliance with the
    threshold usually means that the environmental effect will be deemed to be significant for
    purposes of CEQA. (Ibid.)
    21     The final EIR also states the analysis is divided into (1) a project level analysis for
    the Friant Ranch Specific Plan and Depot Parcel and (2) programmatic level analysis for
    the Friant Community Plan area outside the development proposed in the specific plan.
    44.
    B.     Discussion of Impact of Project-Related Emissions on Health
    Plaintiffs’ first CEQA air quality challenge asserts that the EIR’s discussion of air
    quality impacts failed to explain in adequate detail how the air pollutants emitted by this
    project would impact public health. We agree.
    1.     EIR’s Discussion of Air Pollutants
    The EIR’s discussion of Impact #3.3.2, the long-term area and operational
    emissions, estimated that, at build-out, the proposed Friant Community Plan would emit
    approximately 117.38 tons per year of PM10, 109.52 tons per year of reactive organic
    gases (ROG), and 102.19 tons per year of nitrogen oxides (NOx). Estimates were made
    for ROG and NOx because they are precursors to ozone, which is formed when ROG and
    NOx undergo chemical reactions in the presence of sunlight.
    The Air District’s thresholds of significance are 15, 10 and 10 tons per year for
    PM10, ROG and NOx, respectively. Because the project’s estimated emission of PM10,
    ROG and NOx were from seven to 10 times larger than that of the thresholds of
    significance, the EIR concluded these air pollutants would have a significant adverse
    effect on air quality. Because Mitigation Measure #3.3.2 could not reduce these
    emissions below the Air District’s thresholds of significance, the EIR concluded that the
    significant impacts were unavoidable.
    The draft EIR included a page of background information about ozone and nearly
    a page of background information about PM10. Each included a paragraph about the
    adverse health effects associated with the pollutant. The discussion of the adverse health
    effects, however, was not connected to the levels of the pollutant that would be emitted
    by the completed project. Instead, the discussion of adverse health effects was general in
    nature. For example, the description of the health effects of ozone noted that the effects
    were primarily to the respiratory system and stated:
    “Exposure to ambient levels of ozone ranging from 0.10 to 0.40 ppm for 1
    to 2 hours has been found to significantly alter lung functions by increasing
    45.
    respiratory rates and pulmonary resistance, decreasing tidal volumes, and
    impairing respiratory mechanics.”
    As to PM10, the EIR stated its adverse health effects depended upon “the specific
    composition of the particulate matter.” The EIR, however, provided no information
    about the composition of the particulate matter that was expected to be produced by the
    project.
    2.      Contentions of the Parties
    Plaintiffs contend the discussion of air quality impact was inadequate because (1)
    the EIR did not explain what it meant to exceed the thresholds of significance by tens of
    tons per year and (2) provided no meaningful analysis of the adverse health effects that
    would be associated with the project’s estimated emissions, which were far above the
    thresholds. Plaintiffs argue that anyone reading the EIR would not be able to understand
    how to translate the bare numbers of tons of estimated emissions and the thresholds of
    significance into adverse health impacts. To illustrate this point, plaintiffs assert that a
    reader would not understand how, from the perspective of human health, exceeding an
    Air District threshold by 20 tons would differ from exceeding the threshold by 100 tons.
    Plaintiffs support their position by citing Bakersfield Citizens for Local Control v. City of
    Bakersfield (2004) 
    124 Cal. App. 4th 1184
    , 1219-1220 (Bakersfield Citizens), a case in
    which this court held an EIR was inadequate because it failed to correlate adverse air
    quality impacts to resulting adverse health impacts.
    Defendants contend the EIR was adequate because it informed readers that (1)
    Friant Ranch’s operational emissions would exceed the thresholds of significance set by
    the Air District, which are based on standards necessary for public health; (2) the
    project’s exceedance of the thresholds was a significant and unavoidable consequence of
    the project; (3) the project’s emissions will make it more difficult for the Central Valley
    to reach attainment status, which means the health of valley residents may be impacted;
    and (4) certain types of health impacts can occur from unsafe levels of ozone and PM10.
    Defendants contend that the “reader can infer from this information that the more tons per
    46.
    year of these emissions that a project adds to the air, the worse the project is for air
    quality and human health, generally.” Defendants also contend that if anyone had
    requested additional information regarding the magnitude of the significant impact in a
    comment to the EIR, County would have responded.
    3.      Identification and Analysis of Health Impacts from Air Pollutants
    In Bakersfield 
    Citizens, supra
    , 
    124 Cal. App. 4th 1184
    , a local citizens group filed a
    CEQA petition challenging the EIR’s for two retail shopping centers planned for the
    southwestern portion of Bakersfield, California. (Id. at p. 1193.) Each shopping center
    featured a Wal-Mart Supercenter as its primary anchor tenant. (Id. at p. 1194.) One of
    the arguments raised by the citizens group was “that both EIR’s omitted relevant
    information when they failed to correlate the identified adverse air quality impacts to
    resultant adverse health effects.” (Id. at p. 1219.)
    Both EIR’s in Bakersfield 
    Citizens, supra
    , 
    124 Cal. App. 4th 1184
    concluded that
    the shopping center projects would have significant and unavoidable adverse impacts on
    air quality. (Id. at p. 1219.) “Yet, neither EIR acknowledges the health consequences
    that necessarily result from the identified adverse air quality impacts. Buried in the
    description of some of the various substances that make up the soup known as ‘air
    pollution’ are brief references to respiratory illnesses. However, there is no
    acknowledgement or analysis of the well-known connection between reduction in air
    quality and increases in specific respiratory conditions and illnesses. After reading the
    EIR’s, the public would have no idea of the health consequences that result when more
    pollutants are added to a nonattainment basin.” (Id. at p. 1220.) We concluded that the
    disclosures were inadequate and stated that, on remand, the health impacts resulting from
    47.
    the adverse air quality impacts must be identified and analyzed in the new EIR’s.
    (Ibid.)22
    We will discuss these two action verbs—identify and analyze—separately. With
    respect to identification, the EIR in the present case goes much further than the EIR’s in
    Bakersfield 
    Citizens, supra
    , 
    124 Cal. App. 4th 1184
    , because it (1) lists many types of air
    pollutants that the project will produce; (2) identifies the tons per year of PM10, ROG,
    NOx and other pollutants that the project is expected to generate; and (3) provides a
    general description of each pollutant that acknowledges how it affects human health.
    Therefore, the Friant Ranch EIR has identified, in a general manner, the adverse health
    impacts that could result from the project’s effect on air quality.
    Despite the inclusion of this information, the Friant Ranch EIR was short on
    analysis. It did not correlate the additional tons per year of emission that would be
    generated by the project (i.e., the adverse air quality impacts) to adverse human health
    impacts that could be expected to result from those emissions. As defendants have
    pointed out, the reader can infer from the provided information that the project will make
    air quality and human health worse. Although the better/worse dichotomy is a useful
    starting point for analyzing adverse environmental impacts, including those to human
    health, more information is needed to understand that adverse impact.
    To illustrate this point, we will use extreme examples from the continuum of
    potential human health impacts. The information provided does not enable a reader to
    determine whether the 100-plus tons per year of PM10, ROG and NOx will require
    people with respiratory difficulties to wear filtering devices when they go outdoors in the
    22    The regulatory basis for this conclusion was Guidelines section 15126.2,
    subdivision (a), which provides that an “EIR shall identify and focus on the significant
    environmental effects of the proposed project.” Direct and indirect significant
    environmental effects of the project “shall be clearly identified and described .…” (Ibid.)
    The EIR’s “discussion should include relevant specifics of the … health and safety
    problems caused by the physical changes” resulting from the project. (Ibid.)
    48.
    project area or nonattainment basis or, in contrast, will be no more than a drop in the
    bucket to those people breathing the air containing the additional pollutants.
    The lack of information about the potential magnitude of the impact on human
    health23 also can be demonstrated by referring to quantitative information in the EIR.
    For instance, Table 3.3-2 in the draft EIR sets forth the days each year that pollutants, as
    measured at three monitoring stations in the Fresno area, exceeded federal and state
    standards. If an estimate of the project’s impact on the “days exceeding standards” had
    been provided, the public and decision makers might have some idea of the magnitude of
    the air pollutant impact on human health. As presently written, the final EIR does not
    inform the reader what impact, if any, the project is likely to have on the days of
    nonattainment per year—it might double those days or it might not even add a single a
    day per year. Similarly, no connection or correlation is made between (1) the EIR’s
    statement that exposure to ambient levels of ozone ranging from 0.10 to 0.40 parts per
    million for one to two hours has been found to significantly alter lung functions and (2)
    the emissions that the project is expected to produce.
    The foregoing references to the data provided in the EIR should not be interpreted
    to mean that County must connect the project’s levels of emissions to the standards
    involving days of nonattainment or parts per million. County has discretion in choosing
    what type of analysis to provide and we will not direct County on how to exercise that
    discretion. (§ 21168.5.) Nonetheless, there must be some analysis of the correlation
    23     In this case, information about the magnitude of the human health impacts is
    relevant to the board of supervisors’ value judgment about whether other considerations
    override the adverse health impacts. In other words, a disclosure of respiratory health
    impacts that is limited to the better/worse dichotomy does not allow the decision makers
    to perform the required balancing of economic, legal, social, technological and other
    benefits of the project against the adverse impacts to human health because they have not
    been informed of the weight to place on the adverse impact side of the scales. (See
    Guidelines, § 15093, subd. (a) [statement of overriding considerations].)
    49.
    between the project’s emissions and human health impacts. (Bakersfield 
    Citizens, supra
    ,
    124 Cal.App.4th at pp. 1219-1220.) In other words, we agree with plaintiffs that it is not
    possible to translate the bare numbers provided into adverse health impacts resulting from
    this project.
    Therefore, we conclude that the Friant Ranch EIR is inadequate under CEQA
    because it does not analyze the adverse human health impacts that are likely to result
    from the air quality impacts identified in the EIR. The simple statement in an EIR that
    the significant adverse air quality impacts will have an adverse impact on human health
    fails to comply with the CEQA standards we discussed in Bakersfield 
    Citizens, supra
    ,
    124 Cal.App.4th at pages 1219 through 1220.
    4.    Administrative Exhaustion
    Defendants argue that the issue regarding the correlation between the project’s
    emission of air pollutants and adverse health impacts was not exhausted during the
    administrative process. (See § 21177, subd. (a) [issue exhaustion].)
    We conclude the City of Fresno’s letter adequately raised the issue during the
    administrative process by asserting that “under CEQA, the EIR must disclose the human
    health related effects of the Project’s air pollution impacts. (CEQA Guidelines section
    15126.2(a).) The EIR fails completely in this area.” This assertion apprised County that
    the discussion of human health impacts could not be general in nature, but was required
    to be connected to “the Project’s air pollutions impacts.” Therefore, County was alerted
    and provided an opportunity to correct the deficiency now raised on appeal.
    Also, we conclude that the issue was raised before the trial court. Plaintiffs’
    opening brief in the trial court asserted that the EIR failed “to discuss the health effects of
    the Project’s significant air quality impacts” and cited Bakersfield 
    Citizens, supra
    , 
    124 Cal. App. 4th 1184
    .
    50.
    C.     Air Quality Mitigation Measure #3.3.2
    Plaintiffs’ second CEQA challenge involving air quality asserts that the EIR fails
    to provide sufficient detail about the measures that comprise Mitigation Measure #3.3.2.
    We agree.
    1.     Legal Requirements for EIR’s Discussion of Mitigation Measures
    The statutory basis for plaintiffs’ challenge is section 21100, subdivision (b)(3),
    which states that the EIR “shall include a detailed statement setting forth” the
    “[m]itigation measures proposed to minimize significant effects on the environment .…”
    This informational requirement is designed to fulfill one of the purposes of an EIR, which
    is “to indicate the manner in which [the identified] significant effects [on the
    environment] can be mitigated or avoided.” (§ 21002.1, subd. (a).)
    The statutory requirement for a detailed statement about mitigation measures is
    expanded upon by Guidelines section 15126.4, which addresses the consideration and
    discussion of mitigation measures that must be included in an EIR. Plaintiffs’ appellate
    briefs referred to the following three provisions. First, subdivision (a)(1) of Guidelines
    section 15126.4 states that an “EIR shall describe feasible measures which could
    minimize significant adverse impacts .…” Second, Guidelines section 15126.4,
    subdivision (a)(1)(B) provides: “Where several measures are available to mitigate an
    impact, each should be discussed and the basis for selecting a particular measure should
    be indentified.”
    The third provision plaintiffs cite mandates a substantive requirement for
    mitigation measures. Guidelines section 15126.4, subdivision (a)(2) states that
    “[m]itigation measures must be fully enforceable through permit conditions, agreements,
    or other legally-binding instruments.” The statutory basis for this regulatory provision is
    section 21081.6, subdivision (b): “A public agency shall provide the measures to
    mitigate or avoid significant effects on the environment are fully enforceable through
    permit conditions, agreements, or other measures.” The use of permit conditions to
    51.
    satisfy the enforceability requirement is illustrated by Gray v. County of Madera (2008)
    
    167 Cal. App. 4th 1099
    , a case in which the mitigation measures were incorporated as part
    of the conditional approval of the hard rock mining permit issued by the board of
    supervisors. (Id. at p. 1116.)
    2.     Overview of Mitigation Measure #3.3.2
    Mitigation Measure #3.3.2 is not a single measure, but a dozen separate provisions
    that address (1) nonresidential development, (2) reducing residential energy consumption,
    (3) promoting bicycle usage and (4) transportation emissions. To avoid repetition, the
    terms of those provisions are set forth where relevant to our discussion of the issues
    raised.
    The effectiveness of the proposed mitigation is addressed by the draft EIR’s
    statement that Mitigation Measure #3.3.2 would reduce project air quality impacts, but
    not below the Air District’s thresholds of significance. In comparison, the lead paragraph
    of Mitigation Measure #3.3.2 goes further, stating that implementation of the measures
    would substantially reduce air quality impacts related to human activity within the project
    area, but not to a level that is less than significant.
    The final paragraph of Mitigation Measure #3.3.2 provides County with some
    flexibility by indicating that the mitigation measures are subject to change:
    “The County and [Air District] may substitute different air pollution control
    measures for individual projects, that are equally effective or superior to
    those proposed herein, as new technology and/or other feasible measures
    become available in the course of build-out within the Friant Community
    Plan boundary.”
    This paragraph is among those challenged by plaintiffs in this appeal.
    3.     Statement that Policies Will Lessen Impact
    Plaintiffs’ first claim of insufficient detail concerns a statement made in the
    paragraph labeled “Conclusion” at the end of the EIR’s discussion of Impact #3.3.2 and
    immediately before the terms of Mitigation Measure #3.3.2 were set forth. The third
    52.
    sentence of the conclusion stated: “The impact will be lessened by policies of the
    proposed Specific Plan and Community Plan, as mentioned above, which will promote
    the use of alternative transportation, air quality mitigation for new developments, and
    strategies to minimize the number and length of vehicle trips.”
    Plaintiffs argue that “it is unclear what ‘impact’ the policies will ‘lessen.’ To the
    extent the objective is to minimize emissions from Project-related traffic, the EIR fails to
    explain how the policies of the proposed plans will minimize these emissions or to what
    extent they would minimize the emissions.”
    We disagree with plaintiffs’ assertion that it is unclear what “impact” will be
    lessened. The statement is part of the discussion of Impact #3.3.2, which addresses air
    pollutants from area and operational emissions at build-out of the project. Thus, the
    “impact” referred to is the “increase [in] criteria air pollutants in the area” that is
    mentioned in the first paragraph of the EIR’s discussion of Impact #3.3.2. Furthermore,
    the goals and policies from the specific plan and community plan that are set forth in the
    EIR are not part of the mitigation measures, despite the fact that the implementation of
    the policies would appear to reduce emissions. Because the goals and policies are not
    part of Mitigation Measure #3.3.2, the rules of law governing the adequacy of an EIR’s
    discussion of mitigation measures do not require the EIR to (1) explain how those
    policies would minimize emissions or (2) quantify, or otherwise describe, the extent that
    the policies would minimize emissions.
    Plaintiffs’ argument about the statement that the impact will be lessened by the
    plans’ policies also includes the contention that “a mitigation measure cannot be used as a
    device to avoid disclosing project impacts.” (San Joaquin Raptor Rescue Center v.
    County of 
    Merced, supra
    , 149 Cal.App.4th at pp. 663-664.) This legal principle does not
    apply to the instant case because (1) the policies are not mitigation measures and (2) the
    EIR, in fact, does disclose the air quality impacts by setting forth estimates of the
    operational and area emissions at build-out produced by the URBEMIS software. The
    53.
    estimates in the final EIR are 117.38 tons per year of PM10, 109.52 tons per year of
    ROG, and 102.19 tons per year of NOx.
    Therefore, the EIR’s statement that the impact will be lessened by the plans’
    policies does not violate the informational requirements applicable to mitigation
    measures.
    4.     Guidelines for Nonresidential Development
    Plaintiffs’ second claim of insufficient detail in the discussion of the mitigation
    measures concerns the part of Mitigation Measure #3.3.2 that addresses nonresidential
    development:
    “The following guidelines shall be used by the County during review of
    future project-specific submittals for non-residential development with the
    Specific Plan area and within the Community Plan boundary in order to
    reduce generation of air pollutants with the intent that specified measures
    be required where feasible and appropriate:
    “Trees shall be carefully selected and located to protect building(s)
    from energy consuming environmental conditions, and to shade
    paved areas. Trees selected to shade paved areas should be
    varieties that will shade 25% of the paved area within 20 years;
    “Equip HVAC units with a PremAir or similar catalyst system, if
    reasonably available and economically feasible at the time building
    permits are issued. Catalyst systems are considered feasible if the
    additional cost is less than 10% of the base HVAC unit cost;
    “Install two 110/208 volt power outlets for every two loading
    docks.” (Original italics.)
    a.     Contentions of the Parties
    Plaintiffs’ argument regarding the inadequacy of this discussion is built, in part, on
    two related flaws in the mitigation provisions themselves. Plaintiffs assert the mitigation
    measures (1) are merely amorphous guidelines and (2) are not enforceable. Plaintiffs
    appear to argue that these flaws (and the uncertainty they create) are not cured by the
    discussion in the EIR because there is no explanation of how it will be determined
    54.
    whether a measure is both “feasible and appropriate” and the person making this
    determination is not identified.
    Defendants contend that the measures concerning nonresidential development are
    specific, enforceable and adequately described in the EIR. Defendants interpret these
    measures to mean that during review of future project-specific submittals, County shall
    require that the three provisions be followed. Defendants acknowledge the use of the
    term “guidelines” in the introductory language, but note the use of the word “shall” and
    contend the requirements in the italicized text are quite specific. As to enforceability,
    defendants interpret plaintiffs’ argument as being limited to the phrase “feasible and
    appropriate” and arguing that feasibility is inherent in every mitigation measure adopted
    under CEQA and, alternatively, the three italicized mitigation measures are repeated in
    Mitigation Measures #3.15.1a and #3.15.1d without an introductory clause that states
    they will be implemented only if feasible and appropriate. Based on these arguments,
    defendants conclude that the CEQA requirements are satisfied because County is
    “committed” to the listed mitigation.
    b.     Vagueness and Enforceability
    Our scrutiny of plaintiffs’ claim begins by examining whether the mitigation
    measures in question are vague or unenforceable. For purposes of this case, we will treat
    the question of vagueness as being part of our inquiry into enforceability because
    vagueness makes it difficult to identify the who-what-when essential to enforcement.24
    24     Although we are not applying the due process vagueness doctrine here, the cases
    discussing that doctrine illustrate the relationship between vagueness in a legal
    requirement or prohibition and its enforceability. A vague provision can make persons of
    common intelligence guess at its meaning and cause them to differ as to its application,
    which may result in arbitrary decisions by judges or others enforcing the requirement or
    prohibition. Accordingly, one aspect of the vagueness doctrine examines whether the
    requirement or prohibition in question “provides reasonably adequate standards to guide
    enforcement. [Citations.]” (Fisher v. City of Berkeley (1984) 
    37 Cal. 3d 644
    , 702.)
    55.
    Under CEQA, County “shall provide” that the mitigation measures “are fully
    enforceable through permit conditions, agreements or other measures.” (§ 21081.6,
    subd. (b); Guidelines, § 15126.4, subd. (a)(2).) The mitigation provisions in question do
    not expressly identify the means by which County will make the measures enforceable.
    The provision about equipping HVAC units with a catalyst system refers to availability
    and feasibility at the time building permits are issued. One implication of this language
    is that the inclusion of a catalyst system will be made a permit condition, but other
    interpretations are possible. Because the mitigation provisions themselves do not state
    expressly what County is required to do to render the measures enforceable, we turn to
    the discussion in the EIR to see if it explains how the provisions will be made
    enforceable.25 No such explanation is given in the EIR. Additional uncertainty about
    enforcement arises from the fact that the provisions do not clearly state who is to do what
    and when that action must be taken. For example, the provision that trees “shall be
    carefully selected and located” (italics omitted) to protect buildings from energy
    consuming environmental conditions uses the passive voice to hide the identity of the
    actor—that is, the person or entity selecting and locating the trees.26 Thus, the reader is
    25     Because the measures concerning nonresidential development concern future
    submittals, the enforceability question has two layers. First, if County fails to require the
    mitigation at a future date, can a legal proceeding be brought against County to force it to
    impose the mitigation? (See Morris v. Harper (2001) 
    94 Cal. App. 4th 52
    , 62 [ordinary
    mandamus generally is available only to compel performance of a duty that is purely
    ministerial and cannot be invoked to compel an official to exercise discretion in a
    particular way].) Second, if County requires mitigation, can a legal proceeding be
    brought against the developer to require the developer to perform the action required in
    the mitigation measure?
    26     None of the 12 mitigation provisions in Mitigation Measure #3.3.2 identify the
    person or entity that will perform the mitigation and some measures, such as the
    transportation related mitigation measures, even lack a verb (e.g., equip or install) that
    indicates the action to be taken. For example, the 12th measure simply provides:
    “Information regarding [Air District’s] programs to reduce county-wide emissions.”
    56.
    left to speculate whether County or the developer will perform the selection. Similarly,
    the provision about equipping HVAC units with a catalyst system does not identify who
    will determine if the system is “reasonably available and economically feasible.” Based
    on the foregoing, we conclude that the provisions in Mitigation Measure #3.3.2 are vague
    on matters essential to enforceability and, therefore, County has violated the requirement
    in CEQA that it “shall provide” mitigation measures that “are fully enforceable through
    permit conditions, agreements or other measures.” (§ 21081.6, subd. (b).)
    As to defendants’ argument that the phrase “where feasible and appropriate”27
    does not create vague, unenforceable standards because the same measures are restated
    elsewhere without that limitation, we conclude that this internal inconsistency in the
    language of the mitigation measures does not solve the vagueness problem, but adds to it.
    For example, in a subsequent lawsuit over compliance with the mitigation measures,
    County could argue the inconsistency creates an ambiguity and the courts should defer to
    the interpretation County adopts to resolve that ambiguity because it adopted the
    provisions in the first place and understands the underlying intent. (See Gray v. County
    of 
    Madera, supra
    , 
    167 Cal. App. 4th 1099
    [county entitled to considerable deference when
    27     While the regulatory definition of “feasible” in Guidelines section 15364 has been
    addressed and applied in many cases, the term “appropriate” is not defined in CEQA or
    the Guidelines. Consequently, use of the term could be interpreted as granting County a
    wide range of discretionary authority with regard to the imposition of future mitigation.
    One dictionary defines “appropriate” as “especially suitable or compatible: fitting.”
    (Merriam-Webster’s Collegiate Dictionary (10th ed. 1999) p. 57, col. 2.) Therefore, the
    use of the term “appropriate” adds to the vagueness of the mitigation provisions for
    nonresidential development.
    Also, we do not join in defendants’ interpretation of plaintiffs’ argument about the
    lack of enforceability as concerning only the phrase stating that the specified measures
    will “be required where feasible and appropriate.” Plaintiffs expressly argued that “there
    is nothing in MM 3.3.2 that appears to be a commitment to enforceable mitigation” and
    we interpret this argument as addressing more than just the phrase “feasible and
    appropriate.”
    57.
    interpreting its general plan or its zoning ordinances].) Therefore, on remand, the
    additional vagueness created by the inclusion of the phrase “where feasible and
    appropriate” in Mitigation Measure #3.3.2 should be resolved.
    5.     Substantial Reduction in Air Quality Impacts
    Plaintiffs’ third claim of insufficient detail in the discussion of the mitigation
    measures concerns the first sentence in Mitigation Measure #3.3.2, which states that
    “[i]mplementation of the following mitigation measures will substantially reduce air
    quality impacts related to human activity within the entire Project area .…” (Italics
    added.) Plaintiffs argue there was no explanation of how it was determined that the
    proposed measures would substantially reduce air quality impacts and the bare
    conclusion about a substantial reduction does not satisfy CEQA’s disclosure
    requirements. (See 
    AIR, supra
    , 107 Cal.App.4th at p. 1390 [EIR must contain facts and
    analysis, not just bare conclusions].)
    Defendants argue that the EIR is adequate because it enables the public to discern
    the analytical route County traveled from evidence to action and, furthermore, plaintiffs
    have cited no legal authority requiring an EIR to disclose the extent that mitigation would
    reduce emissions.
    The statement that air quality impacts will be reduced substantially by Mitigation
    Measure #3.3.2 implies that someone has quantified the expected reductions to the tons
    of emissions disclosed earlier in the EIR and concluded that those expected reductions
    would be substantial. This implication is not supported by the discussion in the EIR nor
    explained in defendants’ appellate brief. Thus, we are unable to discern whether the use
    of the term “substantially reduce” is supported by any evidence or, alternatively, is
    unsupported by the evidence and was included in Mitigation Measure #3.3.2
    inadvertently or as an intentional attempt to mislead the reader. Regardless of how the
    phrase came to be used, we agree with plaintiffs that the statement that the measure will
    substantially reduce air quality impacts is a bare conclusion and, in this case, is not
    58.
    supported by facts or analysis as required by the disclosure principles set forth in 
    AIR, supra
    , 107 Cal.App.4th at pages 1390 through 1391. On remand, if County reasserts its
    position that the reductions in emissions will be substantial, it should include enough
    facts and analysis in the EIR to allow a reviewing court to determine whether that finding
    of fact is supported by substantial evidence. For example, if the URBEMIS software
    program used to estimate the development’s emissions contains variables that are
    affected by the mitigation measures, it may be that the software program was used to
    analyze a development scenario that included the mitigation measures. If that is the case,
    then the use of URBEMIS to quantify the emission reductions should be disclosed.
    Alternatively, if no quantitative assessment was performed, then (1) the claim of a
    substantial reduction should not be made or (2) the nonquantitative basis for the claim
    should be disclosed.
    In summary, on remand, the assertion of fact in Mitigation Measure #3.3.2 that the
    reduction in air quality impacts will be substantial should be either explained or deleted.
    D.     Impermissible Deferral of Formulation of Mitigation Measures
    Plaintiffs argue that Mitigation Measure #3.3.2 constitutes an impermissible
    deferral of the formulation of mitigation measures because (1) it provides for future
    mitigation measures without a commitment to any performance standards and (2) it
    defers the task of formulating mitigation to the Air District.
    1.       Arguments Made to Trial Court
    Defendants contend the issue of deferred formulation of mitigation was not raised
    in the trial court. Plaintiffs did argue to the trial court that the mitigation measures were
    vague and undefined, which made it impossible to gauge their effectiveness. This
    vagueness argument is similar to the claim that the mitigation measures failed to contain
    specific performance criteria—the test used to determine whether the formulation of a
    mitigation measure may be deferred. In addition, the improper deferral of the
    formulation of a mitigation measure for a project of this size presents a question of law
    59.
    involving the public interest. Therefore, in the exercise of our discretion, we will
    consider the question whether County improperly deferred the formulation of mitigation
    measures. (See Woodward Park Homeowners Assn., Inc. v. City of 
    Fresno, supra
    , 150
    Cal.App.4th at pp. 712-714 [this court exercised its discretion to consider issues
    regarding adequacy of EIR not raised below].)
    2.     Rules Concerning Deferral and Performance Criteria
    Generally, it is improper to defer the formulation of mitigation measures.
    (Guidelines, § 15126.4, subd. (a)(1)(B); POET, LLC v. State Air Resources Bd. (2013)
    
    218 Cal. App. 4th 681
    , 735 (POET).) An exception to this general rule applies when the
    agency has committed itself to specific performance criteria for evaluating the efficacy of
    the measures to be implemented in the future, and the future mitigation measures are
    formulated and operational before the project activity that they regulate begins. 
    (POET, supra
    , at p. 738.)
    3.     Substitution of New Measures
    Our analysis of the deferral issue begins with the last paragraph of Mitigation
    Measure #3.3.2 because of its overarching effect, which provides that all the mitigation
    provisions are subject to change. Specifically, the final paragraph provides that “County
    and [Air District] may substitute different air pollution control measures for individual
    projects, that are equally effective or superior to those proposed herein .…” The contents
    of the substitute provisions are unknown at present and, therefore, must be created (i.e.,
    formulated) in the future. Because the formulation of the substitute provisions is
    deferred, they must qualify for an exception to the general rule that prohibits the deferred
    formulation of mitigation measures—that is, there must be specific performance
    standards so that the substitute measures may be evaluated to determine whether, in fact,
    they are equally effective or superior to the measure they replaced.
    Many of the specific provisions in Mitigation Measure #3.3.2 lack performance
    standards that would allow either County or the public to determine whether the
    60.
    substitute measure works as well as the original provisions. The 12th measure, which is
    supposed to address transportation, states: “Information regarding [Air District’s]
    programs to reduce county-wide emissions.” When this provision is construed with the
    substitution clause, there is no basis for determining whether any potential substitute
    measure is equally effective or superior. Therefore, the substitution clause, when read
    together with the 12th measure, violates CEQA because it allows for the deferred
    formulation of mitigation measures when there are no specific performance standards to
    evaluate the effectiveness of the substitute measure.
    4.     Application of Specificity Requirement
    The foregoing conclusion leads us to an analysis of each of the 12 mitigation
    provisions contained in Mitigation Measure #3.3.2. If the original provision contains
    specific performance criteria, then the possibility that a substitute measure might be
    formulated in the future does not violate CEQA because the substitute’s performance
    could be measured objectively under those criteria and a determination reached as to
    whether the substitute is as effective as the measure being replaced.
    The first mitigation measure, which concerns the use of trees in nonresidential
    development, fails to contain any performance standard as to the trees selected and
    located to protect buildings from energy consuming environmental conditions, but does
    contain a performance standard for trees selected to shade paved areas. The latter
    category of trees “should be varieties that will shade 25% of the paved area within 20
    years” (italics omitted). The absence of any performance criteria for the trees selected to
    protect buildings leads us to conclude that part of the provision violates CEQA’s rule
    against the deferred formulation of mitigation measures.
    The second mitigation measure concerning nonresidential development states:
    “Equip HVAC units with a PremAir or similar catalyst system, if reasonably available
    and economically feasible at the time building permits are issued.…” In addition to the
    vagueness problem discussed earlier, the phrase “PremAir or similar catalyst system”
    61.
    does not identify the relevant performance characteristics of a PremAir system and,
    therefore, fails to set forth specific performance criteria. As a result, the person tasked
    with determining whether another catalyst system is similar to or better than a PremAir
    has not been provided with objective criteria for measuring whether the stated goal is
    met. (See 
    POET, supra
    , 218 Cal.App.4th at p. 741.) Therefore, the measure concerning
    HVAC units violates CEQA because it lacks sufficiently specific performance standards
    for determining when another catalyst system is “similar” to the PremAir.
    The third mitigation provision calls for the installation of “two 110/208 volt power
    outlets for every two loading docks.” Plaintiffs do not contend this measure lacks the
    requisite specificity.
    The fourth through seventh mitigation provisions in Mitigation Measure #3.3.2
    shall be used to “accomplish an overall reduction of 10 to 20% in residential energy
    consumption relative to the requirements of the 2008 State of California Title 24 .…”28
    The percentage reduction appears to be a specific performance standard. Plaintiffs have
    not addressed this 10 to 20 percent reduction and, therefore, have not shown the energy
    efficiency standard cannot be measured objectively. Therefore, we conclude that the
    provisions that concern residential energy consumption set forth a standard with the
    requisite specificity.
    The eighth and ninth provisions are designed to promote bicycle usage by
    requiring (1) nonresidential projects to have bike lockers or racks and (2) apartments and
    condominiums to provide “at least two Class I bicycle storage spaces per unit.” (Italics
    omitted.) The eighth provision lacks any performance standard. The ninth provision is
    specific only about the amount of storage required. There is no basis for evaluating the
    emissions reductions achieved by the measure. Therefore, a substitute that addresses
    28    This reference to title 24 presumably means title 24 of the California Code of
    Regulations—part 6 of this title contains the California Building Energy Efficiency
    Standards. (See Tracy First v. City of Tracy (2009) 
    177 Cal. App. 4th 912
    , 932-933.)
    62.
    storage of bicycles could be evaluated under objective criteria, but a substitute pertaining
    to another subject matter could not be evaluated.
    The tenth through 12th mitigation provisions, which are transportation related
    mitigation, are not enforceable because of vagueness and, also, lack the specific
    performance criteria necessary for the evaluation of a substitute measure.
    On remand, the CEQA violations involving the substitution clause and the lack of
    specific performance standards in the mitigation provisions should be addressed.
    E.     Off-Site Emission Reductions
    Plaintiffs requested County to consider how air quality impacts could be mitigated
    impacts through off-site emission reduction programs such as Air District’s Voluntary
    Emission Reduction Agreement (VERA). Plaintiffs contend that County’s response to
    their comment was not in good faith and does not provide a reasoned analysis for not
    requiring a VERA as a condition of project approval.
    Defendants contend County’s response to the comments were adequate because
    they correctly explained that the suggestion for off-site emission reductions, including a
    VERA, would be considered during the Air District’s indirect source review (ISR)
    process.29
    The lead agency’s obligation regarding comments to the draft EIR is discussed in
    CEQA and Guidelines section 15088. The agency must evaluate the comments and
    prepare a written response. (§ 21091, subd. (d)(2)(A); Guidelines, § 15088, subd. (a).)
    The written response shall describe the disposition of significant environmental issues
    29     The ISR process is defined by Air District’s Rules 3180 and 9510. (See Coalition
    for Clean Air v. City of Visalia (2012) 
    209 Cal. App. 4th 408
    , 415, fn. 5.) Rule 9510
    requires a certain amount of emission reductions from each new development project and
    those reductions may be achieved through on-site emission reductions, payment of a fee
    to fund off-site emission reducing projects, or a combination of the two. (California
    Building Industry Assn. v. San Joaquin Valley Air Pollution Control Dist. (2009) 
    178 Cal. App. 4th 120
    , 127.)
    63.
    raised in the comments. When the lead agency’s position on a major environmental issue
    is at variance with the recommendations and objections raised in the comments, the
    response must address in detail why the specific comments and suggestions were not
    accepted. (Guidelines, § 15088, subd. (c).) “There must be good faith, reasoned analysis
    in response. Conclusory statements unsupported by factual information will not suffice.”
    (Ibid.) Responses to comments need not be exhaustive. (Eureka Citizens for Responsible
    Government v. City of Eureka (2007) 
    147 Cal. App. 4th 357
    , 378.) The level of detail
    required in a response is judged by the level of detail in the comment—that is, a general
    response to a general comment is sufficient. (Ibid.)
    Applying the foregoing legal standards, we conclude that County’s response to
    plaintiffs’ written comments provided a reasoned analysis that meets an objective good
    faith standard.30 County’s response to comment No. 32.24 stated: “[A] VERA is a
    voluntary agreement and therefore is not a mitigation measure that is enforceable by the
    County. In addition, VERAs are typically handled prior to issuance of a tentative map.
    However, the application will also be subject to an [ISR], at which time the application
    will discuss a VERA with the [Air District.]” County’s response to comment No. 32.25
    stated that the Air District had jurisdiction over various project-related approvals,
    including the action to ensure compliance with Rule 9510.
    We conclude that these responses adequately served the disclosure purpose that is
    central to the EIR process. (Twain Harte Homeowners Assn. v. County of Tuolumne
    (1982) 
    138 Cal. App. 3d 664
    , 686.) County clearly indicated that the consideration of a
    VERA would occur at a later stage and explained that process.
    30     We conclude an objective standard, which is based on reasonableness, rather than
    a subjective standard, which is based on the actor’s state of mind or motives, is the
    correct standard in this context. (See Madera Oversight Coalition, Inc. v. County of
    
    Madera, supra
    , 199 Cal.App.4th at p. 103, fn. 32.)
    64.
    Besides claiming that County’s response to the comment about VERA was
    inadequate, plaintiffs also appear to disagree with County’s substantive decision to have
    the consideration of a VERA addressed later rather than accelerating the consideration of
    a VERA. Under the abuse of discretion standard of review, it can be difficult for a
    plaintiff to show that an agency’s substantive decision constitutes reversible error. To
    establish reversible error, the plaintiffs must show that the agency “has not proceeded in a
    manner required by law .…” (§ 21168.5.) In the present case, plaintiffs have identified
    no statute, regulations or case law that requires the consideration of VERA at this point in
    the administrative process. Therefore, plaintiffs have not shown that County failed to
    proceed in a manner required by law when it decided not to accelerate the consideration
    of a VERA.
    DISPOSITION
    The judgment is reversed and the matter remanded for further proceedings. The
    superior court is directed (1) to vacate its decision denying the petition for writ of
    mandate and (2) to enter a new order that grants the petition for writ of mandate.
    The superior court shall issue a peremptory writ of mandate that compels County
    to vacate or set aside it approval of the Friant Ranch project and directs County not to
    approve the project before preparing a revised EIR that (1) contains an analysis of the
    adverse human health impacts that are likely to result from the air quality impacts
    identified in the EIR; (2) addresses the deficiencies concerning vagueness, enforceability
    and lack of specific performance standards in Mitigation Measure #3.3.2; and (3)
    addresses the issues related to the statement that those mitigation provisions will
    substantially reduce air quality impacts.
    The superior court shall retain jurisdiction over the proceedings by way of a return
    to the writ. Whether the superior court requires County to file an initial return explaining
    the action it intends to take to satisfy the writ’s requirements is a matter committed to the
    court’s discretion.
    65.
    Costs on appeal are awarded to plaintiffs.
    _____________________
    Franson, J.
    WE CONCUR:
    _____________________
    Cornell, Acting P.J.
    _____________________
    Kane, J.
    66.