Opinion
The “tiering” provisions (Pub. Resources Code, §§ 21068.5, 21093, 21094—see fn. 5, post) of the California Environmental Quality Act (Pub. Resources Code, § 21000 et seq., or CEQA) enable a public agency to avoid, under some circumstances, having to undertake a repetitious analysis of significant environmental effects of a project when those effects have previously been addressed in an earlier environmental impact report (EIR). In the case before us a public agency approved an environmental impact report for a project calling for the creation of a 29,500-acre, 5,000-residen-tial-unit destination resort and residential community without an on-site water source, but deferred any analysis of significant environmental effects of supplying that water with the understanding that any such effects would be addressed in a later EIR to be prepared after the project was approved. In the published portion of this opinion, we hold that the tiering provisions of CEQA do not exempt a public agency from the Public Resources Code section 21100, subdivision (b)(1) requirement that an EIR shall include a detailed statement setting forth “[a]ll significant effects on the environment of the proposed project,” and that under the facts of the present case the superior court erred in upholding the approval of an EIR which deferred any consideration of any significant environmental effects of supplying water to the new community.
Introduction
In 1993 respondent County of Stanislaus (County) certified an EIR for a proposed specific plan (the Diablo Grande Specific Plan, or plan) submitted by respondent Diablo Grande Limited Partnership (Diablo Grande) and calling for the creation of a 29,500-acre destination resort and residential community in southwest Stanislaus County. The resort community (the project) was to include scenic open spaces, a wilderness conservation area, six golf courses, swim and tennis facilities, a hotel and executive conference center, a winery, vineyards, a research campus, municipal facilities, a “town center,” shops and offices, and five “villages” containing a total of 5,000 residential units.
Certain portions of the project area had been restricted to agricultural use in accordance with so-called “Williamson Act contracts” (see Gov. Code, *187 § 51200 et seq.) between the property owners and the County. Under certain circumstances, such a contract can be canceled by a county at the request of a property owner. In this case the County canceled a portion of a Williamson Act contract so that the project could be developed.
After the County certified the EIR and canceled the Williamson Act contract, appellants brought a petition for writ of mandate asking the superior court to set aside the County’s certification of the EIR and the County’s cancellation of the Williamson Act contract. 1 The court denied the petition and entered judgment in favor of the County.
Appellants’ Contentions
Appellants’ primary contention on this appeal is that the EIR is legally inadequate because it does not “address the procurement and impacts of a permanent water supply.”
Second, appellants argue that the County’s cancellation of the Williamson Act contract violated that act in several respects, including a violation of a purported requirement that such contracts may be canceled only in “emergency” situations.
Third, appellants raise several conclusory arguments that the superior court erred in failing to find other violations of CEQA and of the California Endangered Species Act (CESA). With regard to CEQA, appellants contend that the EIR is inadequate because it fails to adequately address impacts on wildlife, vegetation and air quality. Appellants further contend that the court erred in failing to find that the EIR should have been recirculated for further public review as a result of comments submitted during the public comment period. With regard to CESA, appellants appear to argue that the County’s adoption of the Diablo Grande Specific Plan constituted the “take” of an endangered and threatened species, the San Joaquin kit fox.
In part I of this opinion we will address appellants’ primary argument, namely that the EIR is legally deficient because it fails to “address the procurement and impacts of a permanent water supply.” In an unpublished portion of this opinion we will address appellants’ contention that the County’s violation of the Williamson Act contract was unlawful. In another unpublished portion we will turn to appellants’ remaining arguments.
*188 Facts
A. The Proposed Project
On January 3,1991, respondent Diablo Grande submitted a formal application to the County for adoption of a specific plan for a 29,500-acre destination resort community. Diablo Grande also submitted applications for approvals of a general plan amendment and a rezoning consistent with the plan and a completed environmental questionnaire.
The draft specific plan was “prepared to meet the requirements contained in section 65450 et seq. of the Government Code.” 2 The draft specific plan called for over 18,700 acres of open space, 5,000 residential units of various sizes and types clustered in 5 villages, a hotel and conference center, 6 golf courses, a swim and tennis club, a winery and vineyard, a research campus and certain supporting facilities. It envisioned that development would occur in four overlapping phases over twenty-five years. Phase 1 was to be completed in year 15. Phase 2 would begin in year five and end in year fifteen. Phase 3 would begin in year 10 and end in year 20. Phase 4 would begin in year 15 and end in year 25. Each phase was to cover a different area of the overall plan area and required approval of a “Preliminary Development Plan” (PDP), which would establish the general regulations for development within the PDP area.
The draft specific plan included a PDP for the first 15-year phase of development covering roughly 2,000 acres and the construction of the primary access road. The phase 1 PDP encompassed most of the first village, *189 2,000 residential units, the hotel and conference center, the swim and tennis club, 2 golf courses and the access roads. A “mini-phase 1" development for the first five years of phase 1 (also referred to as the Five Year Plan) included one golf course and clubhouse, the winery and vineyard, the hotel, a maintenance center, the first phase of the swim and tennis club and two hundred residential units. 3
The general plan amendment was requested by Diablo Grande to change the land-use designation of the project area in the County’s general plan from “agriculture” to designations consistent with the project. Similarly, the rezoning was requested to change the project area zoning to zoning consistent with the project. Diablo Grande also requested that the County cancel a contract which restricted the property within the phase 1 area to agricultural use for property tax purposes pursuant to the Williamson Act.
B. The Environmental Setting of the Project
The 29,500-acre project area, all of which is owned by Diablo Grande, is located in the foothills of the Diablo Range. The Diablo Range forms the western rim of the San Joaquin Valley and is in the southwestern area of the County. The area consists of gently sloping to steep ridges, vegetated primarily with nonnative grasses, native trees (dominated by blue oak) and brush. There are many animal and plant species present or potentially present in the project area, including some of “special status.” Portions of the area have been identified as potential habitat for the San Joaquin kit fox (considered an endangered species) but no kit fox have been observed in the area. The access roads, however, traverse kit fox habitat.
The project area is generally dry although there are some riparian habitats, stemming from intermittent creeks, stock ponds and springs. The area does not contain enough on-site sources of water to support the project and, as the draft specific plan stated, “off-site water must be obtained for both residential and commercial purposes.”
The project area is now being and has been used for years as rangeland for livestock. Less than 1 percent of the area (approximately 200 acres, located in the phase 4 and 5 areas) is considered “prime” agricultural land. Given the nature of the soil and the slope and the limited on-site water, the rest of the area is considered “limited base” agricultural land, suited for activities such as grazing. Parts of the area have “little grazing value.”
*190 The surrounding region, from the Altamont Pass in Alameda County to the southern tip of the Temblor Range in Kern County, is little different in terms of use and biology. There are no cities of any appreciable size. The immediately adjacent properties (51 parcels with 28 owners) were also used for rangeland and also are not considered to be prime agricultural land.
We will present other facts pertinent to this appeal in conjunction with our discussions of the issues to which those facts pertain.
I.
Adequacy of the EIR re Water Supply
In order to place into a meaningful context appellants’ contention of inadequacy of the EIR, we begin with an overview of the CEQA review process and of CEQA’s requirement that an EIR address the significant impacts of a proposed project. We then restate the law pertaining to the standard by which this court undertakes judicial review of the superior court’s determination of CEQA compliance. We then turn to the core issue before us—whether the superior court erred in determining that the EIR’s treatment of significant environmental effects of supplying water to the proposed project was legally adequate.
A. The CEQA Review Process
In
Laurel Heights Improvement Assn.
v.
Regents of University of California
(1993)
“We have repeatedly recognized that the EIR is the ‘heart of CEQA.’ [Citations.] ‘Its purpose is to inform the public and its responsible officials of the environmental consequences of their decisions before they are made. Thus, the EIR “protects not only the environment but also informed self-government.” [Citation.]’ [Citation.] To this end, public participation is an ‘essential part of the CEQA process.’ [Citations.]
“With certain limited exceptions, a public agency must prepare an EIR whenever substantial evidence supports a fair argument that a proposed project ‘may have a significant effect on the environment.’ [Citations.] ‘ “Significant effect on the environment” means a substantial, or potentially substantial, adverse change in the environment.’ [Citation.]
*191 “When an EIR is required, the lead agency initially prepares a draft EIR. Once the draft EIR is completed, a comment period is provided for the public and interested agencies. [Citations.] Public hearings to discuss the draft EIR are encouraged, but not required. [Citation.] The comment period is generally no shorter than 30 days and no longer than 90 days. [Citations.]
“In the course of preparing a final EIR, the lead agency must evaluate and respond to comments relating to significant environmental issues. [Citations.] In particular, the lead agency must explain in detail its reasons for rejecting suggestions and proceeding with the project despite its environmental effects. [Citation.] ‘There must be good faith, reasoned analysis in response [to the comments received]. Conclusory statements unsupported by factual information will not suffice.’ [Citation.] Thus, it is plain that the final EIR will almost always contain information not included in the draft EIR.
“The final substantive step in the EIR review process is certification of the final EIR. The lead agency is required to certify that the final EIR has been completed in compliance with CEQA, and that it reviewed and considered the information in the final EIR prior to approving the project. [Citation.] CEQA also requires that, before approving a project, the lead agency ‘find either that the project’s significant environmental effects identified in the [final] EIR have been avoided or mitigated or that the unmitigated effects are outweighed by the project’s benefits. [Citations.]’ [Citation.]
“If the lead agency adds ‘significant new information’ to the EIR subsequent to the close of the public comment period but prior to certification of the final EIR, CEQA requires that the lead agency provide a new public comment period. [Citation.]
“The statutory scheme also provides for an additional public comment period after the certification of a final EIR if: (1) ‘substantial changes in the project’ are made; (2) ‘substantial changes’ occur regarding the circumstances under which the project is being undertaken; or (3) ‘new information, which was not known and could not have been known,’ when the EIR was certified, becomes available. [Citations.] The Guidelines in turn generally define ‘new information’ as information which shows that the project will have new or more severe ‘significant effects’ on the environment not disclosed in the prior EIR. [Citation.] A ‘significant effect’ is further defined in the Guidelines as a ‘substantial, or potentially substantial, adverse change.’ [Citation.]” (Laurel Heights Improvement Assn. v. Regents of University of California, supra, 6 Cal.4th at pp. 1123-1126, fns. omitted.) An EIR must address a proposed project’s “significant effect on the environment.” (Pub. Resources Code, § 21100, subd. (b).) See also Guidelines (Cal. *192 Code Regs., tit. 14, § 15000 et seq.) section 15126, subdivision (a) (the EIR “shall identify and focus on the significant environmental effects of the proposed project”).
B. Judicial Review
In
Gentry
v.
City of Murrieta
(1995)
“ ‘In an action to set aside an agency’s determination under [CEQA], the appropriate standard of review is determined by the nature of the proceeding below. . . . [S]ection 21168 “establishes the standard of review in administrative mandamus proceedings” under Code of Civil Procedure section 1094.5, while section 21168.5 “governs traditional mandamus actions” under Code of Civil Procedure section 1085. [Citation.] The former section applies to proceedings normally termed “quasi-adjudicative,” “in which by law a hearing is required to be given, evidence is required to be taken and discretion in the determination of facts is vested in a public agency . . . .” [Citations.] The latter section applies to all other actions taken pursuant to CEQA and generally encompasses “quasi-legislative” decisions made by a public agency. [Citations.]’ [Citations.]
“The distinction, however, is rarely significant. In either case, the issue before the trial court is whether the agency abused its discretion. Abuse of discretion is shown if (1) the agency has not proceeded in a manner required by law, or (2) the determination is not supported by substantial evidence. [Citations.]
‘“[I]n undertaking judicial review pursuant to Sections 21168 and 21168.5, courts shall continue to follow the established principle that there is no presumption that error is prejudicial.’ [Citation.] However, ‘non-compliance with the information disclosure provisions of [CEQA] which precludes relevant information from being presented to the public agency, or noncompliance with substantive requirements of [CEQA], may constitute a prejudicial abuse of discretion within the meaning of Sections 21168 and 21168.5, regardless of whether a different outcome would have resulted if the public agency had complied with those provisions.’ [Citation.]
“On appeal, the appellate court’s ‘task ... is the same as that of the trial court: that is, to review the agency’s actions to determine whether the agency complied with procedures required by law.’ [Citation.] The appellate court reviews the administrative record independently; the trial *193 court’s conclusions are not binding on it. [Citations.]” (Gentry v. City of Murrieta, supra, 36 Cal.App.4th at pp. 1374-1376.)
The standard by which an EIR’s analysis of a significant environmental impact is tested is set forth in Guidelines section 15151, which states: “An EIR should be prepared with a sufficient degree of analysis to provide decisionmakers with information which enables them to make a decision which intelligently takes account of environmental consequences. An evaluation of the environmental effects of a proposed project need not be exhaustive, but the sufficiency of an EIR is to be reviewed in the light of what is reasonably feasible. Disagreement among experts does not make an EIR inadequate, but the EIR should summarize the main points of disagreement among the experts. The courts have looked not for perfection but for adequacy, completeness, and a good faith effort at full disclosure.” (See also
San Francisco Ecology Center
v.
City and County of San Francisco
(1975)
A reviewing court does “ ‘not pass upon the correctness of the EIR’s environmental conclusions, but only upon its sufficiency as an informative document.’ ”
(Laurel Heights I, supra,
*194 “This standard of review is consistent with the requirement that the agency’s approval of an EIR ‘shall be supported by substantial evidence in the record.’ [Citation.] In applying the substantial evidence standard, ‘the reviewing court must resolve reasonable doubts in favor of the administrative finding and decision.’ [Citations.] The Guidelines define ‘substantial evidence’ as ‘enough relevant information and reasonable inferences from this information that a fair argument can be made to support a conclusion, even though other conclusions might also be reached.’ [Citation.]
“A court may not set aside an agency’s approval of an EIR on the ground that an opposite conclusion would have been equally or more reasonable. [Citation.] A court’s task is not to weigh conflicting evidence and determine who has the better argument when the dispute is whether adverse effects have been mitigated or could be better mitigated. We have neither the resources nor scientific expertise to engage in such analysis, even if the statutorily prescribed standard of review permitted us to do so. Our limited function is consistent with the principle that ‘The purpose of CEQA is not to generate paper, but to compel government at all levels to make decisions with environmental consequences in mind. CEQA does not, indeed cannot, guarantee that these decisions will always be those which favor environmental considerations.’ [Citation.]” (Laurel Heights I, supra, 47 Cal.3d at pp. 392-393; in accord, see Western States Petroleum Assn. v. Superior Court (1995)9 Cal.4th 559 , 573-574 [38 Cal.Rptr.2d 139 ,888 P.2d 1268 ]; see also Kostka & Zischke, Practice Under the Cal. Environmental Quality Act (Cont.Ed.Bar 1996) §§ 12.3 through 12.8, pp. 459 to 468.1.)
C. The EIR Was Inadequate
The EIR in the present case stated in part: “The project’s water supply system will involve any one or a number of the following: offsite groundwater, water purchases and exchanges, participation in water conservation projects with other water districts in exchange for water saved; utilization of wastewater effluent, both onsite and acquired offsite; development of groundwater storage facilities in Madera County; utilization of the California Aqueduct and Delta-Mendota Canal for exchange deliveries; and playing an active role in the existing trading network among California water districts south of the Delta.”
The EIR also pointed out that the completed project would require approximately 13,000 acre-feet per year of water, or approximately 11,500,000 gallons per day. Phase 1, which would include the golf course and clubhouse, the winery, 40 acres of vineyards, 200 single-family residential units, *195 and the swim and tennis center, would itself require 5,000 acre-feet of water per year. The first five years of phase 1 (the so-called mini-phase 1) would itself require one thousand two hundred acre-feet per year.
Among the “significant unavoidable impacts” listed in the EIR was the following: “The project would require the provision of approximately 12,880 acre-feet of water per year at buildout from an off-site source for domestic, irrigation, and for light industrial uses. A firm water supply has not yet been established beyond the first five years of development, although the applicant is pursuing several sources, and a water district has been created. Until such a source is established, this is considered a significant impact. Upon establishment of such a source, off-site unmitigated impacts may occur from the transfer and use of the water.” (Italics added.)
The EIR attempted to deal with this “significant unavoidable impact” by including the following so-called “mitigation measure”: “Because long-term water supplies beyond the five-year buildout have not been assured, development requiring over 1,200 acre-feet per year of water shall not be permitted unless the applicant can show to the County’s satisfaction that adequate water supplies have been made available, and that environmental impacts of those sources have been studied and mitigated per CEQA requirements.”
The EIR also stated that “because adequate water supplies for the project at full buildout have not been secured, provision of those supplies could result in potentially significant impacts” and that “[ajdditional environmental review of further water acquisition projects will be required as part of the water acquisition process or as part of further detailed project-level review for future phases of development.”
The County in essence approved an EIR for a 25-year project when water for the project had not been assured beyond the first 5 years of the 15-year first phase of the project. The County knew neither the source of the water the project would use beyond the first five years, nor what significant environmental effects might be expected when the as yet unknown water source (or sources) is ultimately used.
In our view, the County’s approval of the project under these circumstances defeated a fundamental purpose of CEQA: to “inform the public and responsible officials of the environmental consequences of their decisions before they are made.”
(Laurel Heights II, supra,
Similarly, numerous cases have stated that a purpose of CEQA is “to compel government at all levels to make decisions with environmental consequences in mind.”
(Bozung
v.
Local Agency Formation Com.
(1975)
The case of
Santiago County Water Dist.
v.
County of Orange
(1981)
The EIR in
Santiago
failed to include “facts from which to evaluate the pros and cons of supplying the amount of water that the mine will need.” (
Respondent Diablo Grande candidly concedes that “there is no analysis of the potential impacts of the eventual long-term supply” of water. Respondents attempt to justify this omission by relying on the “tiering” provisions of CEQA. As we shall explain, however, a decision to “tier” environmental review does not excuse a governmental entity from complying with CEQA’s mandate to prepare, or cause to be prepared, an environmental impact report on any project that may have a significant effect on the environment, with that report to include a detailed statement setting forth “[a]ll significant effects on the environment of the proposed project.” (Pub. Resources Code, § 21100.)
Public Resources Code sections 21068.5, 21093 and 21094 govern the use of “tiered” EIR’s. 5 Those statutes appear to evidence a legislative intent to free a lead agency from having to reinvent the wheel, so to speak, each time *198 an EIR is prepared on one of a series of projects when some of the significant environmental effects of those projects could be analyzed once at the outset. The authors of Practice Under the California Environmental Quality Act (Cont.Ed.Bar 1995) state at section 11.4 on page 432 that “[t]he tiering of EIRs allows agencies to evaluate broad environmental issues, to respond to those issues in an EIR prepared at the planning stage, and to provide detailed examination of specific issues in EIRs on later development projects that are consistent with or implement the approved plan.” Consider, for example, a series of five new downtown office building construction projects. Each might be expected to generate significant additional automobile traffic. Rather than present a new traffic impact analysis in each of five EIR’s, a “first tier” EIR might be used to analyze traffic impacts and other common environmental impacts expected to result from the five projects. The later EIR’s on the individual projects would then “refer to” the first-tier EIR for analysis of traffic impacts. (Pub. Resources Code, § 21094, subd. (e).)
*199 Respondents argue that because they intend to undertake site-specific environmental review of each of the four “phases” of development, they can properly defer analysis of the environmental impacts of supplying water to the project until the actual source of that supply is selected sometime in the future. But “tiering” is not a device for deferring the identification of significant environmental impacts that the adoption of a specific plan can be expected to cause. The County in this case could not make an informed decision on whether to adopt the Diablo Grande Specific Plan without being informed, to some reasonable degree, of the environmental consequences of supplying water to a 5,000-residential-unit development which has no on-site water source. 6 Indeed, the environmental consequences of supplying water to this project would appear to be one of the most fundamental and general “general matters” to be addressed in a first-tier EIR. (See Pub. Resources Code, § 21068.5.)
Respondents rely on
Al Larson Boat Shop, Inc.
v.
Board of Harbor Commissioners
(1993)
Some of the difficulty in applying the tiering concept appears to result from the fact that an EIR is prepared for a “project” (Pub. Resources Code, §§ 21100, 21065) and that when tiering is used, there appear to be two or more “projects.” Public Resources Code sections 21068.5 and 21093 refer to a “policy, plan, program, or ordinance” for which an EIR has been prepared. (See also Pub. Resources Code, § 21094 [program, plan, policy, or ordinance] and Guidelines, Cal. Code Regs., tit. 14, §§ 15385 [program, plan, or policy] and § 15168 [program].) 7 A first-tier EIR or “program EIR” (see Guidelines, § 15168) is then utilized in connection with an EIR on a “later project” (Pub. Resources Code, § 21094, subd. (d)). Although Public *201 Resources Code sections 21068.5, 21093 and 21094 do not appear to expressly say so, the “program, plan, policy or ordinance” is itself a “project.” Section 15168 of the Guidelines appears to acknowledge at least indirectly that a “program” is a “project” by stating that a “program EIR is an EIR which may be prepared on a series of actions that can be characterized as one large project. . . .”
It is crucial, however, for a government decision maker to know what the “project” is that the decision maker is approving. Numerous cases have stated that “[ojnly through an accurate view of the project may affected outsiders and public decision-makers balance the proposal’s benefit against its environmental cost, consider mitigation measures, assess the advantage of terminating the proposal . . . and weigh other alternatives in the balance” and that “[a]n accurate, stable and finite project description is the
sine qua non
of an informative and legally sufficient EIR.”
(County of Inyo
v.
City of Los Angeles, supra,
71 Cal.App.3d at pp. 192-193;
Santiago County Water Dist.
v.
County of Orange, supra,
The amendment of a general plan is a “project” within the meaning of CEQA’s definition of that term.
(City of Santa Ana
v.
City of Garden Grove
(1979)
At oral argument before this court, respondent Diablo Grande emphasized four cases which it contends bolster its view that the EIR in the present case was adequate and that all analysis of any significant environmental effects of supplying water to the proposed project may be deferred to a later time. These are
Village Laguna of Laguna Beach, Inc.
v.
Board of Supervisors
(1982)
In
Village Laguna, supra,
the Orange County Board of Supervisors approved an EIR for a general plan amendment calling for development of a “new city” in southwest Orange County near Laguna Beach. The EIR discussed various alternatives for the new city, including “plans for the development of 0, 7,500, 10,000, 20,000, and 25,000 dwelling units” in the proposed new city.
(Village Laguna of Laguna Beach, Inc.
v.
Board of Supervisors, supra,
In
Rio Vista Farm Bureau Center
v.
County of Solano, supra,
The present project, in contrast, does identify the specific location of each of the five proposed villages, and the timing of the construction of those villages in four separate phases. The project here is not merely a general policy document, but an actual specific plan. (See Gov. Code, § 65451 & fn. 2,
ante.)
The
Rio Vista
court noted that “[t]he Plan does not select or recommend any specific sites for hazardous waste disposal facilities.” (
Sacramento Old City Assn.
v.
City Council, supra,
In
Twain Harte Homeowners Assn.
v.
County of Tuolumne, supra,
Respondents’ contention that the EIR is legally sufficient as a “project level” or second-tier EIR for phase 1 of the Diablo Grande Specific Plan is similarly unpersuasive. Phase 1 will last 15 years, but only the water source for the first 5 years (the so-called “mini-phase 1”) has been identified and examined. The source of water, and any significant environmental effects of supplying that water, for years six through fifteen of phase 1 were not disclosed in the EIR.
We are not concluding respondent must first find a source of water for the “project” before an EIR will be adequate. We are concluding that an EIR for this project must address the impact of supplying water for the project. It is not mitigation of a significant environmental impact on a project to say that if the impact is not addressed then the project will not be built. The decision not to build may well rest upon the absence of a suitable or adequate water *206 source. However, the decision to approve the EIR of this project does require recognition that water must be supplied, that it will come from a specific source or one of several possible sources, of what the impact will be if supplied from a particular source or possible sources and if that impact is adverse how it will be addressed. While it might be argued that not building a portion of the project is the ultimate mitigation, it must be borne in mind that the EIR must address the project and assumes the project will be built.
We do not by this opinion place any new burdens on preparers of EIR’s. Our opinion today is merely an affirmation of already existing law. “Drafting an EIR . . . necessarily involves some degree of forecasting. While forecasting the unforeseeable is not possible, an agency must use its best efforts to find out and disclose all that it reasonably can.” (Guidelines, Cal. Code Regs., tit. 14, § 15144.) Because the specific plan here (and also phase 1 of the development) unquestionably and admittedly contemplate the supplying of water to a large development, respondent County must “attempt in good faith to fulfill its obligation under CEQA to provide sufficient meaningful information regarding the types of activity and environmental effects that are reasonably foreseeable” from that supplying of water.
(Laurel Heights I, supra,
II., III. *
IV.
Disposition
For the reasons stated in part I of this opinion, the judgment is reversed. Costs to appellants.
Dibiaso, J., and Vartabedian, J., concurred.
A petition for a rehearing was denied Septemaber 6,1996, and the opinion was modified to read as printed above. The petition of respondent County of Stanislaus for review by the Supreme Court was denied November 13, 1996. Kennard, J., was of the opinion that the petition should be granted.
Notes
Appellants are petitioners Stanislaus Natural Heritage Project, Sierra Club, and Ecology Action Educational Institute.
Government Code section 65450 states: “After the legislative body has adopted a general plan, the planning agency may, or if so directed by the legislative body, shall, prepare specific plans for the systematic implementation of the general plan for all or part of the area covered by the general plan.”
Government Code section 65451 states: “(a) A specific plan shall include a text and a diagram or diagrams which specify all of the following in detail:
“(1) The distribution, location, and extent of the uses of land, including open space, within the area covered by the plan.
“(2) The proposed distribution, location, and extent and intensity of major components of public and private transportation, sewage, water, drainage, solid waste disposal, energy, and other essential facilities proposed to be located within the area covered by the plan and needed to support the land uses described in the plan.
“(3) Standards and criteria by which development will proceed, and standards for the conservation, development, and utilization of natural resources, where applicable.
“(4) A program of implementation measures including regulations, programs, public works projects, and financing measures necessary to carry out paragraphs (1), (2), and (3).
“(b) The specific plan shall include a statement of the relationship of the specific plan to the general plan.”
Pursuant to an agreement with the California Farm Bureau Federation and as approved by the board, these residential units are no longer part of mini-phase 1 and cannot be built until a long-term water supply has been secured and studied.
Public Resources Code section 21083 authorizes the state’s Office of Planning and Research to prepare, and the Secretary of the Resources Agency to adopt, “guidelines for the implementation of” CEQA by public agencies. These Guidelines are found at California Code of Regulations, title 14, section 15000 et seq., and section 15000 states that the Guidelines “are binding on all public agencies in California.” Our California Supreme Court has stated on more than one occasion that “ ‘[a]t a minimum, . . . courts should afford great weight to the Guidelines except when a provision is clearly unauthorized or erroneous under CEQA.’ ”
(Citizens of Goleta Valley
v.
Board of Supervisors
(1990)
Public Resources Code section 21068.5 states: “ ‘Tiering’ or ‘tier’ means the coverage of general matters and environmental effects in an environmental impact report prepared for a policy, plan, program or ordinance followed by narrower or site-specific environmental impact reports which incorporate by reference the discussion in any prior environmental impact report and which concentrate on the environmental effects which (a) are capable of being mitigated, or (b) were not analyzed as significant effects on the environment in the prior environmental impact report.”
Public Resources Code section 21093 states: “(a) The Legislature finds and declares that tiering of environmental impact reports will promote construction of needed housing and other development projects by (1) streamlining regulatory procedures, (2) avoiding repetitive discussions of the same issues in successive environmental impact reports, and (3) ensuring that environmental impact reports prepared for later projects which are consistent with a previously approved policy, plan, program, or ordinance concentrate upon environmental effects which may be mitigated or avoided in connection with the decision on each later project. The Legislature further finds and declares that tiering is appropriate when it helps a *198 public agency to focus upon the issues ripe for decision at each level of environmental review and in order to exclude duplicative analysis of environmental effects examined in previous environmental impact reports.
“(b) To achieve this purpose, environmental impact reports shall be tiered whenever feasible, as determined by the lead agency.”
Public Resources Code section 21094 states: “(a) Where a prior environmental impact report has been prepared and certified for a program, plan, policy, or ordinance, the lead agency for a later project that meets the requirements of this section shall examine significant effects of the later project upon the environment by using a tiered environmental impact report, except that the report on the later project need not examine those effects which the lead agency determines were either (1) mitigated or avoided pursuant to subdivision (a) of Section 21081 as a result of the prior environmental impact report, or (2) examined at a sufficient level of detail in the prior environmental impact report to enable those effects to be mitigated or avoided by site specific revisions, the imposition of conditions, or by other means in connection with the approval of the later project.
“(b) This section applies only to a later project which the lead agency determines (1) is consistent with the program, plan, policy, or ordinance for which an environmental impact report has been prepared and certified, (2) is consistent with applicable local land use plans and zoning of the city, county, or city and county in which the later project would be located, and (3) is not subject to Section 21166.
“(c) For purposes of compliance with this section, an initial study shall be prepared to assist the lead agency in making the determinations required by this section. The initial study shall analyze whether the later project may cause significant effects on the environment that were not examined in the prior environmental impact report.
“(d) All public agencies which propose to carry out or approve the later project may utilize the prior environmental impact report and the environmental impact report on the later project to fulfill the requirements of Section 21081.
“(e) When tiering is used pursuant to this section, an environmental impact report prepared for a later project shall refer to the prior environmental impact report and state where a copy of the prior environmental impact report may be examined.”
See Guidelines, California Code of Regulations, title 14, section 15151, quoted in the text of subpart B of part I, ante.
Guidelines section 15385 states: “ ‘Tiering’ refers to the coverage of general matters in broader EIRs (such as on general plans or policy statements) with subsequent narrower EIRs or ultimately site-specific EIRs incorporating by reference the general discussions and concentrating solely on the issues specific to the EIR subsequently prepared. Tiering is appropriate when the sequence of EIRs is:
“(a) From a general plan, policy, or program EIR to a program, plan, or policy EIR of lesser scope or to a site-specific EIR.
“(b) From an EIR on a specific action at an early stage to a subsequent EIR or a supplement to an EIR at a later stage. Tiering in such cases is appropriate when it helps the lead agency to focus on the issues which are ripe for decision and exclude from consideration issues already decided or not yet ripe.”
Guidelines section 15168 states: “(a) General. A program EIR is an EIR which may be prepared on a series of actions that can be characterized as one large project and are related either:
“(1) Geographically, [<]D (2) As logical parts in the chain of contemplated actions, [CJ0 (3) In connection with issuance of rules, regulations, plans, or other general criteria to govern the conduct of a continuing program, or M] (4) As individual activities carried out under the same authorizing statutory or regulatory authority and having generally similar environmental effects which can be mitigated in similar ways.
“(b) Advantages. Use of a program EIR can provide the following advantages. The program EIR can:
“(1) Provide an occasion for a more exhaustive consideration of effects and alternatives than would be practical in an EIR on an individual action, [^Q (2) Ensure consideration of cumulative impacts that might be slighted in a case-by-case analysis, fiD (3) Avoid duplicative reconsideration of basic policy considerations, [U (4) Allow the lead agency to consider broad policy alternatives and program wide mitigation measures at an early time when the agency has greater flexibility to deal with basic problems or cumulative impacts, and [^Q (5) Allow reduction in paperwork.
“(c) Use With Later Activities. Subsequent activities in the program must be examined in the light of the program EIR to determine whether an additional environmental document must be prepared.
“(1) If a later activity would have effects that were not examined in the program EIR, a new initial study would need to be prepared leading to either an EIR or a negative declaration. [<]fl (2) If the agency finds that pursuant to Section 15162, no new effects could occur or no new mitigation measures would be required, the agency can approve the activity as being within *201 the scope of the project covered by the program EIR, and no new environmental document would be required. [1 (3) An agency shall incorporate feasible mitigation measures and alternatives developed in the program EIR into subsequent actions in the program. [‘JO (4) Where the subsequent activities involve site specific operations, the agency should use a written checklist or similar device to document the evaluation of the site and the activity to determine whether the environmental effects of the operation were covered in the program EIR. [TQ (5) A program EIR will be most helpful in dealing with subsequent activities if it deals with the effects of the program as specifically and comprehensively as possible. With a good and detailed analysis of the program, many subsequent activities could be found to be within the scope of the project described in the program EIR, and no further environmental documents would be required.
“(d) Use With Subsequent EIRs and Negative Declarations. A program EIR can be used to simplify the task of preparing environmental documents on later parts of the program. The program EIR can:
“(1) Provide the basis in an initial study for determining whether the later activity may have any significant effects. HQ (2) Be incorporated by reference to deal with regional influences, secondary effects, cumulative impacts, broad alternatives, and other factors that apply to the program as a whole. [SD (3) Focus an EIR on a subsequent project to permit discussion solely of new effects which had not been considered before.
“(e) Notice with Later Activities. When a law other than CEQA requires public notice when the agency later proposes to carry out or approve an activity within the program and to rely on the program EIR for CEQA compliance, the notice of the activity shall include a statement that:
“(1) This activity is within the scope of the program approved earlier, and [*¡0 (2) The program EIR adequately describes the activity for the purposes of CEQA.”
The EIR itself described the “project” as follows:
“D. Technical Project Description
“Introduction
“The proposed project is an amendment to the Stanislaus County General Plan and rezoning to permit development of a planned destination resort and residential community on the site. In addition, the project includes a Phase 1 Preliminary Development Plan for 2,000 acres of the site centered around Oak Flat. [<]Q The following project description was summarized from the Draft Specific Plan prepared by Diablo Grande, Inc. in April 1992. The Draft Specific Plan is available for public review at the Stanislaus County Planning Department.
“Description
“The entire 29,500-acre project site is proposed for a General Plan designation of ‘Specific Plan’. In addition, all property within the site is proposed to have underlying or combining General Plan designations contained in the Stanislaus County General Plan (Table III.D-A). The site is currently designated Agriculture in the County’s General Plan. Zoning on the site is proposed to be changed from A-2-160, General Agriculture District, with two dwellings allowed for every 160 acres, to S-P, ‘Specific Plan,’ pursuant to Chapter 21.38 of the Stanislaus County Zoning Ordinance. The project would have underlying or combined zone classifications based on districts contained in the Stanislaus County Zoning Ordinance as modified by the Specific Plan (Table III.D-B). [']□ Under the General Plan amendment and rezoning, development of five ‘villages’ is proposed including recreational, residential, open space, resort, office, commercial, agricultural, and other land uses. Figure III.D-1 is the proposed land use plan. Additional development would occur within the Entry Area between the proposed Village 1 and the eastern boundary of the Diablo Grande Project site. The proposed land uses are summarized in Table III.D-C.”
An “Introduction” at the beginning of the EIR described the EIR as purporting to enable the County and the public to “examine the overall effects of the proposed project.” The “Introduction” stated in part: “This EIR provides program-level environmental analysis of the Specific Plan as well as project-level analysis of the proposed Phase 1 of development. The program-level analysis enables government decision makers and the public to examine the overall effects of the proposed project and to avoid or reduce adverse environmental impacts. Upon preparation of detailed proposed preliminary development plans within the Specific Plan, future project-specific environmental studies will be provided. The project-level environmental analysis of Phase 1 is to determine the extent of potential impacts associated with the specific proposed land uses and to recommend mitigation measures to offset impacts.”
See also Guidelines, California Code of Regulations, title 14, section 15165, which states: “Where individual projects are, or a phased project is, to be undertaken and where the total undertaking comprises a project with significant environmental effect, the lead agency shall prepare a single program EIR for the ultimate project as described in Section 15168. Where an individual project is a necessary precedent for action on a larger project, or commits the lead agency to a larger project, with significant environmental effect, an EIR must address itself to the scope of the larger project. Where one project is one of several similar projects of a public agency, but is not deemed a part of a larger undertaking or a larger project, the agency may prepare one EIR for all projects, or one for each project, but shall in either case comment upon the cumulative effect.”
See footnote, ante, page 182.
