Pennington v. Tetra Tech, Inc.
- James Donato
- 3:18-cv-05330
- U.S. District Court · Northern District of California
- 10
In Pennington v. Tetra Tech, Judge Donato denied expert exclusion and class certification because plaintiffs lacked common proof of causation.
The ruling affects the plaintiffs seeking class certification, the proposed class members, and Tetra Tech, Inc. and the other defendants. The underlying claims remain subject to further proceedings.
What happened
In Pennington v. Tetra Tech, Inc., plaintiffs asked the court to certify classes for claims involving alleged contamination, property damage, negligence, nuisance, and misrepresentation. Defendants asked the court to exclude plaintiffs’ expert declaration.
The court denied defendants’ request to exclude expert Brett Reynolds’s opinions, finding that plaintiffs showed his methods were sufficiently reliable for the evidence rules. But the court denied class certification because plaintiffs did not provide common evidence showing that Tetra Tech caused the claimed harm across the proposed class, and individualized questions would require separate trials. The court also denied plaintiffs’ alternative request to certify particular issues.
Judge James Donato also denied the request to keep certain materials sealed, directed plaintiffs to file an unredacted motion, and ordered the parties to submit a proposed case schedule.
The detailed version
- Pennington v. Tetra Tech, Inc. · No. 3:18-cv-05330
- James Donato
- Dec. 23, 2024
Background
Plaintiffs moved for class certification under Rules 23(a) and 23(b)(3) for claims involving permanent public and private nuisance, negligence, and negligent and intentional misrepresentation. The proposed class consisted of individuals or entities who held title to one or more market-rate units on Parcel A at the Shipyard in San Francisco on August 2, 2018. Plaintiffs relied primarily on a declaration from Brett Reynolds, a licensed appraiser, concerning alleged property-value losses and Mello-Roos liabilities.
Defendants moved to exclude Reynolds’s declaration under Federal Rule of Evidence 702. Reynolds estimated appreciation impairment for 241 sold homes at $55,523,536 and estimated Mello-Roos liabilities at $8,393,735. Defendants argued that Reynolds lacked relevant expertise and used a fundamentally flawed methodology.
Expert-exclusion motion
The court denied the motion to exclude Reynolds’s opinions. It concluded that plaintiffs had shown that his opinions were more likely than not based on reliable principles and methods and reliably applied to the facts. The court rejected defendants’ objection concerning Reynolds’s treatment of the August 2, 2018 cutoff date because Reynolds had not offered a substantive opinion about why that date was the proper cutoff. The court also concluded that criticisms of the index Reynolds selected were matters for cross-examination rather than grounds for exclusion under Rule 702.
Class certification
The court denied certification under Rule 23(b)(3). Plaintiffs had to prove that the proposed class satisfied Rule 23’s requirements, including predominance. Predominance asks whether common issues are more important than issues requiring individualized proof.
The court found that plaintiffs had not identified common evidence establishing causation, which was an element of each claim for which they sought certification. Reynolds’s declaration addressed alleged property-value harm but did not meaningfully analyze causation or alternative causes. His analysis treated sales after August 2, 2018 as affected by the alleged misconduct without adequately supporting the assumption that the alleged misconduct was the cause of the homes’ reduced appreciation.
Because plaintiffs lacked representative evidence, the court concluded that individual testimony would be needed about possible causes of each home’s relative lack of appreciation. The court identified factors that could differ from home to home, including design and construction quality, age, maintenance, code status, bedrooms and bathrooms, fires or water leaks, and lot location. These individualized questions would create numerous separate factual proceedings and defeat predominance.
The court reached a similar conclusion for the misrepresentation claims. Plaintiffs had not provided sufficient specifics or evidence identifying the alleged misrepresentations or omissions, or showing how materiality and related questions could be resolved with common proof.
Alternative issue certification
The court also denied plaintiffs’ alternative request to certify particular issues under Rule 23(c)(4). Although predominance is not required for an issues class, the court found that the individualized questions would make such a class inefficient. Plaintiffs also did not show that issue certification would materially advance the litigation as a whole.
Other orders and disposition
The court denied the request to continue sealing materials because no party requested continued sealing. Plaintiffs were directed to file an unredacted version of their class-certification motion by January 6, 2025. The parties were directed to meet and confer and jointly file a proposed case schedule by January 24, 2025. The order states that both the class-certification motion and the related expert-exclusion motion are denied.
Classification
This is a procedural order because it resolves class-certification, expert-admissibility, sealing, and scheduling matters without deciding the underlying liability claims on their merits.
Read the full 10-page opinion on CourtListener, the free public archive maintained by the Free Law Project.