The First District Court of Appeal affirmed the trial court and upheld the State Water Resources Control Board’s (“Board”) approval of a policy to maintain instream flows of Northern California coastal streams (“Policy”) for the purposes of water rights administration under Water Code section 1259.4. The Policy includes measures to protect native fish populations, including steelhead trout, coho salmon, and chinook salmon. It also establishes five principles related to the timing and rate of allowable surface water diversions and the construction of new on-stream dams.
In May 2010, the Board adopted the Policy with a Substitute Environmental Document (“SED”), in accordance with CEQA’s provisions for certified regulatory programs under Public Resources Code section 21080.5. Although the Board also prepared Subterranean Stream Delineations (“Delineations”) to identify locations in the Policy area where the Board would have permitting authority over groundwater pumping, the Board neither disclosed the locations, nor incorporated the Delineations, into the Policy. A report prepared by the Board’s consultant as part of the SED noted that the Policy’s restrictions on surface water diversions could result in depletion of groundwater as some of the surface water users would begin to divert water from other sources, including groundwater.
The plaintiff sued the Board, alleging CEQA violations. The trial court found the SED deficient and ordered the Board to, among other things, evaluate the Delineations as a potentially feasible mitigation measure for the anticipated increased use of groundwater. In response, the Board conducted additional CEQA review and certified a revised SED (“RSED”) in October 2013. The RSED evaluated the Delineations as a mitigation measure, but concluded they would not be feasible for several reasons, including: (1) the likelihood of affected persons switching to groundwater pumping was uncertain; (2) the potential shift from surface water diversions to groundwater pumping that might be caused by the Policy was unlikely to cause a significant reduction in surface water flows; (3) adoption of the Delineations would not assist the Board in regulating pumping outside the mapped areas; (4) the Delineations were based on the information available at the time they were prepared and field inspections had not been conducted; (5) the Board could consider the Delineations on a case-by-case basis even if they were not adopted as part of the Policy; and (6) the Board could regulate unacceptable impacts associated with groundwater pumping based on its authority to prohibit the unreasonable use of water. In March 2014, the plaintiff again sued the Board based on the RSED’s analysis of the anticipated increased use of groundwater pumping. The trial court held for the Board.
On appeal, the court first rejected the plaintiff’s argument that the RSED was misleading because it “equivocated” by asserting that the Policy’s impacts were uncertain or unlikely, while it simultaneously found these impacts would be significant. The court concluded the RSED fulfilled its information purpose because it clarified the basis for its conclusions and was internally consistent.
Next, the court upheld the Board’s conclusion that use of the Delineations as a mitigation measure was infeasible. First, the court rejected the plaintiff’s contention that the Board relied on two legally irrelevant factors in making the conclusion, including: (1) the likelihood that surface water users would switch to groundwater pumping as a result of the Policy; and (2) the severity of the depletion of surface water flows resulting from groundwater pumping. The court found it permissible for the Board to consider these factors because the likelihood and severity of the effect were relevant in making the determination. Second, the court rejected the plaintiff’s argument that the Board was prohibited from considering the effectiveness of a mitigation measure in determining the measure’s feasibility. The court explained that no case law precluded the Board from doing so.