Rasmussen v. J.R. Simplot Company

CourtDistrict Court, D. Idaho
DecidedJune 30, 2025
Docket4:25-cv-00236
StatusUnknown

This text of Rasmussen v. J.R. Simplot Company (Rasmussen v. J.R. Simplot Company) is published on Counsel Stack Legal Research, covering District Court, D. Idaho primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Rasmussen v. J.R. Simplot Company, (D. Idaho 2025).

Opinion

IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF IDAHO

LYNN RASMUSSEN and GLENN RASMUSSEN, a married couple Case No. 4:25-cv-00236-DCN residing in Grace, Idaho, MEMORANDUM DECISION AND ORDER Plaintiffs,

v.

J.R. SIMPLOT COMPANY, a Nevada corporation; IDAHO DEPARTMENT OF AGRICULTURE, a department organized under the State of Idaho; IDAHO DEPARTMENT OF ENVIRONMENTAL QUALITY, a department organized under the State of Idaho; U.S. ENVIRONMENTAL PROTECTION AGENCY, an agency of the United State of America; JOHN AND JANE DOES I-X, yet unknown parties,

Defendants.

I. INTRODUCTION Before the Court is Plaintiffs Lynn Rasmussen and Glenn Rasmussen’s (“The Rasmussens”) Motion for Emergency Injunctive Relief and Writ of Mandate. Dkt. 4. On May 30, 2025, the Court held oral argument1 and took the Motion under advisement. Upon

1 While the Idaho Department of Environmental Quality submitted a short Response to the Rasmussen’s Motion and attended the hearing, the relief the Rasmussens requested only involves Simplot and the Idaho State Department of Agriculture. Therefore, this Order will only pertain to those two Defendants. review, and for the reasons set forth below, the Court DENIES the Motion for Emergency Injunctive Relief and Writ of Mandate.

II. BACKGROUND The Rasmussens are seventh generation cattle ranchers based out of the Caribou Mountain Range in Southeast Idaho. Dkt. 1, at 5. Their ranch is made up of their own private land, land leased from the State of Idaho, and permitted cattle allotments from the National Forest Service in the Caribou National Forest. Id. at 6. As part of their operation, their cows are housed on their land in Grace, Idaho, during the fall and winter, moved to

state land in mid-May, and are trailed through the federal allotments throughout the summer until mid-October before being returned to Grace. Id. at 6–7. Defendant J.R. Simplot Company (“Simplot”), among their many operations, owns and operates the Smoky Canyon Mine (“Mine”), which is an open-pit mine for phosphate ore. Id. at 8. Mined phosphate ore is transferred by pipeline from the Mine to Simplot’s

Don Plant in Pocatello, Idaho.2 Id. at 8–9. The pipeline is 86 miles long and goes through the Caribou-Targhee National Forest System. Id. at 9. In relevant part, a section of the pipeline sits on a ridgeline above a portion of the Rasmussens’ federal allotments. Id. at 10. Between May and July 2023, Simplot’s pipeline leaked or was otherwise breached,

resulting in a large Slurry spill throughout portions of the Rasmussens’ federal allotments, where the cows were grazing and drinking from local streams. Id. The Rasmussens’ son,

2 The phosphate ore gathered from the Mine is refined and ground into powder before being mixed with water and other compounds for transport. This mix is referred to as “Slurry.” Danny, was moving cattle through the federal allotments in September 2023 when he discovered the non-contained Slurry, and the Rasmussens allege Simplot knew of the spill

but failed to inform them prior to their own discovery. Id. at 13. There is significant debate between the parties as to how Simplot responded to the spill and what effect the spill had on the Rasmussens’ cows. Simplot asserts they discovered the full extent of the spill in August 2023, and upon such discovery, they complied with their reporting and cleanup obligations. Dkt. 19, at 16. This included cleanup efforts that began in September 2023 and continued throughout

2024. Id. at 16–17. As part of those cleanup efforts, Simplot installed exclusion fencing on portions of the Rasmussens’ federal allotments. Id. The Rasmussens, on the other hand, contend no remediation had occurred as of October 2023. Dkt. 1, at 18. Both parties have provided evidence on the effect of the spill on local vegetation, surface water, soil, and the Rasmussens’ cows which, at least in part, seems to conflict.

The Court will briefly summarize those competing positions based on the limited information before it. Simplot retained an environmental consultant to specifically test vegetation and surface water. The results indicated water quality samples met regulatory standards with “little measurable increase in metals compared to background areas.” Dkt. 19-3, at 6. While

there were elevated Mercury levels throughout the area (not just in the area exposed to Slurry), Simplot provided two separate declarations that the vegetation data did not indicate exposure to the Slurry could cause harms through heavy metal exposure to the cows. Dkt. 19, at 18. In other words, according to one of Simplot’s experts, “the likelihood of exposure that these cows may have experienced was not sufficient to cause toxicity from cadmium or any other compound that may be present in the slurry and/or nearby environment.” Dkt.

19-4, at 3. The Rasmussens conducted both their own tests and have provided analysis of some of Simplot’s test, which they contend paint a very different picture. First, Simplot allegedly conducted a study of the soil in the area in August 2023, which indicated high concentrations of heavy metals exceeding Environmental Protection Agency standards. Dkt. 1, at 14–15. The Rasmussens collected soil samples themselves in September 2023

and sent them for testing, which also showed high levels of heavy metals in the soil. Id. at 17–18. In October 2023, the Rasmussens began testing their cows for possible adverse effects resulting from Slurry exposure. This included the testing of hair samples and tissue samples, which did not suffice to determine the true effect on the animals. Id. at 20–21. Because the tests were not effective, the Rasmussens sent 12 cows for euthanization to

obtain sufficient liver and kidney samples. Id. at 22. The results of those tests indicated the presence of mid to high levels of heavy metals and tissue damage to organs. Id. at 22–23. From December 2023 to March 2024, additional tissue samples were submitted from cows who had died, aborted fetuses, and stillborn calves, seeming to indicate concerning abnormalities which could be traceable to heavy metal exposure.3 Id. at 23–24.

3 Simplot contends these tests were insufficient to show any disease was caused by the Slurry. For example, age can increase cadmium concentrations in cows’ kidneys, and the research did not reflect that. Dkt. 19, at 19. Importantly, Simplot’s causation argument seems to be supported by the analysis of tests performed. For example, the toxicology interpretation noted, “Cadmium accumulates in the kidney naturally over time . . . . Results should be interpreted within this clinical context.” Dkt. 1, at 165. Also important, “all other heavy metal values [besides cadmium] were normal.” Id. The Rasmussens have filed for emergency injunctive relief due to their continued need to care for approximately 280 cows exposed to the Slurry and the approximately 460

calves born to those cows over the past two years. They assert they lack both physical and financial resources to continue to care for the cows or to proceed with euthanization and disposal. Dkt. 4, at 4. They would like the Court to grant emergency injunctive relief and a writ of mandate requiring the disposal of the cattle at Simplot’s expense with the Idaho Department of Agriculture (“ISDA”) to facilitate the disposal. They also request monetary relief for the costs of care and management of the cattle over the past few years along with

the value of the cattle. III. LEGAL STANDARDS A. Preliminary Injunction The function of a traditional preliminary injunction is to preserve the status quo–– the last uncontested status between the parties before the current controversy––pending a

final determination on the merits of the case. Chalk v. U.S. Dist. Court Cent. Dist. of Cal., 840 F.2d 701, 704 (9th Cir. 1988); GoTo.com, Inc. v.

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