Misti Leon, as personal representative of the Estate of Juliana Leon v. Exxon Mobil Corporation, et al.

District Court, W.D. Washington·Decided October 28, 2025·No. 2:25-cv-01190·Unknown

Opinion

UNITED STATES DISTRICT COURT WESTERN DISTRICT OF WASHINGTON AT SEATTLE MISTI LEON, as personal representative CASE NO. C25-1190 MJP of the ESTATE OF JULIANA LEON, ORDER GRANTING MOTION TO Plaintiff, REMAND v. EXXON MOBIL CORPORATION, et al., Defendants. This matter comes before the Court on Plaintiff’s Motion to Remand. (Dkt. No. 56.) Having reviewed the Motion, Defendant Olympic Pipe Line Company LLC’s Opposition (Dkt. No. 60), Defendants’ Joint Opposition (Dkt. No. 62), the Reply (Dkt. No. 63), and all supporting materials, the Court GRANTS the Motion and REMANDS this matter to King County Superior Court. Plaintiff Misti Leon, as personal representative for the estate of Juliana Leon, commenced this wrongful death action seeking to hold various oil and gas companies responsible for Juliana’s death that occurred during the heat dome event of 2021. Plaintiff pursues product

liability and public nuisance claims. Defendants removed the case from King County Superior Court, contending that the Court has diversity jurisdiction because the one non-diverse defendant—Olympic Pipe Line Company LLC—is fraudulently joined. The Court reviews the relevant factual allegations and the procedural posture. A. Relevant Factual Background On June 28, 2021, Juliana Leon died of hyperthermia while driving her car without air conditioning in temperatures well over 100 degrees during a heat dome event where morning temperatures were already over 90 degrees. (Compl. ¶¶ 4.8-4.15 (Dkt. No. 1-1).) Leon was driving to Seattle from Ferndale in order to visit her doctor for a post-operative visit. (Id. ¶¶ 4.6- 4.9.) Leon’s doctor’s appointment ended at around noon, and she was released with vitals

showing unremarkable symptoms. (Id. ¶¶ 4.9-4.10.) As she drove home, the temperature outside was over 100 degrees, and she was forced to roll her windows down because the air conditioning was not working in her car. (Id. ¶ 4.10.) At some point during her drive, she pulled off the highway and parked her car in a residential area, where a passer-by found her unresponsive with the windows rolled down. (Id. ¶¶ 4.11-13.) Emergency personnel were unable to revive her, and her internal temperature exceeded 107 degrees while the ambient air temperature was 105 degrees. (Id. ¶ 4.14.) B. Procedural History

Plaintiff filed suit against Defendants, who are “multinational oil and gas companies that produce, refine, distribute, promote, market, and sell fossil fuels and fossil fuel-based products worldwide, including in Washington.” (Compl. ¶ 2.2.) Defendants include: (1) Exxon Mobil Corporation and ExxonMobil Oil Corporation; (2) BP p.l.c. and BP America Inc.; (3) Olympic

Pipeline Company LLC; (4) Chevron Corporation and Chevron U.S.A., Inc.; (5) Shell plc and Shell USA, Inc.; (6) ConocoPhillips, ConocoPhillips Company, Phillips 66, and Phillips 66 Company. (Id. ¶¶ 2.3-2.7.) Through a wrongful death/survivorship action, Plaintiff pursues claims under the Washington Product Liability Act and Washington’s Public Nuisance statute. (Id. ¶¶ 5.1-5.28.) Defendants removed the action from King County Superior Court on the theory that the Court has diversity jurisdiction. (Notice of Removal (Dkt. No. 1).) They did so even though Plaintiff and one of the Defendants, Olympic Pipeline Company LLC, are both citizens of Washington. (Id.) To get around this impediment to diversity jurisdiction, Defendants insist that Olympic has been fraudulently joined and is procedurally misjoined. (Id. ¶¶ 3-5.)

Plaintiff has filed a Motion to Remand, which turns on the allegations against Olympic. Olympic owns a “400-mile mile pipeline between Blaine, Washington, and Portland, Oregon, and the Bayview, Washington, terminal.” (Compl. ¶ 2.4(f).) Plaintiff alleges that “BP is responsible for managing Olympic[‘s] . . . day-to-day operations, and Olympic . . . is subject to BP’s management and control.” (Id. ¶ 2.4(e).) Olympic is alleged to have been a member of the Western States Petroleum Association (WSPA) from 1999 to 2012. (Id. ¶ 2.4(g).) Olympic has provided a declaration with more detail about its activities. The declarant, Douglas Nilsen, explains that Olympic’s “pipeline system transports finished grade petroleum products . . . for Olympic’s customers (i.e., the shippers)” and that these “customers own the finished-grade

petroleum product transported through the pipeline system.” (Declaration of Douglas Nilsen ¶ 3 (Dkt. No. 61).) Nilsen avers that Olympic is not involved in the design or manufacture or sale of petroleum products, though his declaration is limited to his unidentified personal “knowledge.” (Id. ¶ 6-7.) Nilsen also admits that Olympic does “[o]n rare occasions” sell a form of gas mixture

(called “transmix”) to others shipper, though not the public. (Id. ¶ 8.). As to the product liability claim, Plaintiff alleges that “Defendants are manufacturers and/or sellers other than manufacturers of dangerous fossil fuel products” and that their “products have never been safe because their intended use or foreseeable misuse creates a risk of catastrophic harm to the climate and humankind.” (Id. ¶ 5.10.) She further alleges that “[a]lthough Defendants have known of this risk and how to mitigate it for decades, they have never issued product warnings to consumers” and “have affirmatively concealed the risks by deceiving the public about the reality of climate change, the consequences of climate change, and the role their fossil fuel products play in causing and exacerbating climate change.” (Id. ¶ 5.11.) In addition, Plaintiff alleges that both at and post-manufacture, Defendants violated a duty to

warn consumers about the causal connection between the use of fossil fuels and the risk of climate change. (Id. ¶ 5.14.) And as to “those Defendants acting primarily as wholesalers, distributors, and/or retailers of fossil fuel products at all relevant times knew those products would cause catastrophic harm, yet negligently failed to warn of those harms, and misrepresented and/or intentionally concealed material facts about unabated use of those products.” (Id. ¶ 5.16.) In support of her public nuisance claim, Plaintiff alleges Olympic and the other defendants “individually and in concert with each other, have engaged, and continue to engage in, unlawful, negligent, reckless, knowing, and/or intentional tortious conduct.” (Compl. ¶ 5.23.)

This conduct includes, among other things, concealing the hazards of fossil fuel use, “promoting and creating the sale and use of fossil fuels without warning consumers that using fossil fuels would cause dangerous climate change,” and “promoting and creating the sale and use of fossil fuels that Defendants knew to be hazardous and knew would cause or exacerbate climate change

and related consequences, including, but not limited to, extreme heat events and the conditions that led to the Heat Dome, such as drought, soil aridity, and warm ocean temperature.” (Id. ¶ 5.23(b), (c), (d).) Plaintiff asserts that this conduct has harmed public health and property, as well as Juliana Leon’s health, comfort, safety, security, and, ultimately, life. (Id. ¶ 5.24.) A. Subject Matter Jurisdiction and Fraudulent Joinder Standards A defendant may remove “any civil action brought in a State court of which the district courts . . . have original jurisdiction.” 28 U.S.C. § 1441(a). Diversity removal requires complete diversity, meaning that each plaintiff must be of a different citizenship from each defendant. Caterpillar Inc. v. Lewis, 519 U.S. 61, 68 (1996). And in determining whether there is complete

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Misti Leon, as personal representative of the Estate of Juliana Leon v. Exxon Mobil Corporation, et al., (W.D. Wash. 2025).

Misti Leon, as personal representative of the Estate of Juliana Leon v. Exxon Mobil Corporation, et al. (Misti Leon, as personal representative of the Estate of Juliana Leon v. Exxon Mobil Corporation, et al.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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