United States v. Hansen (262 F.3d 1217): Case Brief and How to Write One

Every fall I hand a room of first-year students the same long opinion and ask for one page back. The opinion is United States v. Hansen, 262 F.3d 1217, decided by the Eleventh Circuit on August 24, 2001. Three men who ran a mercury cell chemical plant in Brunswick, Georgia were convicted of environmental crimes, and the court of appeals affirmed every conviction and every sentence. Most of them hand me three pages, because nobody has told them what a brief is for. It is not a summary. It is a tool built so you can answer a question about the case in ten seconds, under pressure, without rereading.

This guide briefs Hansen properly, with every fact drawn from the published opinion, and teaches the method along the way, including IRAC, the four-part structure lawyers use to analyze a single legal question. Read the example, then go read the opinion yourself and write your own. A brief someone else wrote is a map of someone else’s reading.

One warning before you open the opinion

Two well known cases are called United States v. Hansen, and they have nothing to do with each other. The one at 262 F.3d 1217 is the 2001 Eleventh Circuit decision about the Brunswick plant. The other, United States v. Hansen, 599 U.S. 762 (2023), is a Supreme Court case about a federal immigration statute that criminalizes encouraging unlawful entry. Students who search the name and read the first result often brief the wrong case. Check the reporter. “F.3d” is the Federal Reporter, third series, which collects federal courts of appeals decisions; “U.S.” is the United States Reports, the Supreme Court. If your syllabus cites 262 F.3d 1217, you want the chemical plant, the Eleventh Circuit, and 2001.

Also: the opinion is per curiam, meaning it speaks for the panel rather than a single named author. The panel was Circuit Judges Birch and Dubina and District Judge Hancock sitting by designation. Write “per curiam” where the author’s name would go. Professors notice.

The parts of a brief, and what each one is for

I ask for six parts, in this order, because the order mirrors how the court itself thinks.

Part	The question it answers	Length in a good brief
Facts	What happened between the parties before anyone sued or charged anyone?	4 to 8 sentences
Procedural history	How did the case travel through the courts to reach this one?	2 to 4 sentences
Issue	What legal question must this court answer?	One sentence per issue, phrased as a question
Holding	How did the court answer it?	One sentence per issue, yes or no plus the rule
Reasoning	Why? Which rule, which facts, which precedent?	The longest part, still under half a page
Disposition	What order did the court enter?	One word or one line

Holding and disposition are separate rows, and students merge them constantly. “Affirmed” is a disposition. “Knowledge can be proven circumstantially through reports the defendant received” is a holding. The disposition tells you who won; the holding tells you the law.

If you want the general method spelled out before watching it applied under load, my earlier guide on how to write a legal case brief walks through each part with a shorter case.

The worked brief: United States v. Hansen, 262 F.3d 1217 (11th Cir. 2001)

Facts. The Hanlin Group, founded by Christian Hansen in 1972, operated a chlor-alkali plant in Brunswick, Georgia under the name LCP Chemicals-Georgia. The plant sat beside Purvis Creek and made caustic soda, hydrogen gas, hydrochloric acid, and bleach in two cellrooms holding fifty mercury cells each. Production generated elemental mercury, mercury-contaminated sludge, and highly caustic wastewater. The wastewater treatment system had half the capacity the company had described to Georgia regulators, and nobody told the state. Wastewater that could not be treated sat on the cellroom floors behind dirt berms, leaked into a lake when the floors overflowed, and was eventually pumped into old oil storage tanks. Hanlin entered bankruptcy in 1991 and money for repairs dried up. Workers waded through caustic water, showed rising mercury levels in urine tests, and complained to management. The state documented significant permit violations in ten of thirteen months between May 1992 and May 1993, and in September 1993 it revoked the discharge permit. The three defendants held overlapping roles in 1993: Christian Hansen as chairman and CEO until the board removed him in April, then as plant manager from July through September; his son Randall Hansen as interim CEO from April to November; and Alfred Taylor as plant manager from February to July, then as project engineer. A sale to a buyer fell through, the plant closed, and the site became a Superfund cleanup the EPA estimated at more than $50 million.

Procedural history. The government indicted the three men, along with the plant’s environmental manager, in the Southern District of Georgia for conspiracy under 18 U.S.C. § 371, Clean Water Act violations, RCRA violations including knowing endangerment, CERCLA reporting violations, and an Endangered Species Act count. The environmental manager pled guilty and testified for the government. The trial judge acquitted everyone on the Endangered Species Act count and sent the rest to the jury, which convicted. Christian Hansen received 108 months in prison, Taylor 78, and Randall Hansen 46. All three appealed their convictions and sentences.

Issues. The appeal raised a cluster of questions, and your brief should list them because the court answers each separately. (1) Did the district court abuse its discretion by admitting the government’s expert witnesses without a Daubert hearing? (2) Was the evidence sufficient to show that each defendant held authority over the violations, that the wastewater was hazardous and improperly stored, that the defendants knowingly endangered workers, that they conspired, and that Randall Hansen knew of the violations when they occurred? (3) Did the jury instructions misstate reasonable doubt, misuse the responsible corporate officer concept, or strip the knowledge element out of the environmental counts? (4) Did the sentencing judge wrongly believe he lacked authority to depart downward from the guidelines?

Holding. No on every question. The expert testimony was properly admitted, the evidence supported each conviction, the instructions read as a whole stated the law correctly, and the sentencing judge understood his authority and chose not to use it.

Reasoning. I take the four issues in the court’s own order, which is itself a clue to what the court thought mattered.

On the experts, Hansen had not objected at trial, so review was for plain error; his Daubert motion had targeted a different count and named no methodology to test. The Brady claim failed because the supposedly suppressed impeachment material was published court opinions anyone could have found.

On sufficiency, viewing the evidence in the light most favorable to the government, each defendant had directed or authorized the conduct at issue: Hansen ordered the oil tanks filled with wastewater, Randall received twenty-two written reports listing 110 permit violations and still told the state that the company had “already taken steps to improve the situation,” and Taylor as project engineer supervised the release of overflow. Bankruptcy was no shield; the court cited Ohio v. Kovacs for the rule that a debtor in possession must still obey environmental law. The wastewater qualified as hazardous because plant logs showed mercury above the 200 parts per billion regulatory threshold and samples showed a pH of 14, and cellrooms bounded by dirt berms were not “tanks” eligible for the ninety-day storage exemption.

On knowing endangerment, the court applied the statutory definition: a defendant acts knowingly if he “is aware or believes that his conduct is substantially certain to cause danger of death or serious bodily injury,” and that awareness can be proven circumstantially, including by evidence that a defendant “took affirmative steps to shield himself from relevant information.” NIOSH had told Taylor as early as 1988 that workers carried “extremely high” mercury levels, and employees testified to burns and to refusing to enter the cellrooms. That was enough.

On the instructions, one sentence of the oral reasonable doubt charge was wrong, but the correct standard surrounded it, appeared in the written charge every juror held, and was repeated for each element. The responsible corporate officer instruction was given only on the RCRA counts, and the clarifying language the defendants complained about was their own request.

On sentencing, an appellate court cannot review a refusal to depart unless the judge mistakenly believed he lacked the power. Nothing in the record showed such a mistake.

Disposition. Affirmed. The Supreme Court later declined to hear the case.

IRAC, shown on one issue from Hansen

A brief is a map of the whole opinion. IRAC is a lens for one legal question inside it. The letters stand for Issue, Rule, Application, Conclusion, and the discipline lies in keeping them apart. Most weak legal writing blends rule and application into a paragraph that asserts a conclusion while pretending to analyze. Take the knowing endangerment question.

Step	Content
Issue	Was there sufficient evidence that the defendants knew their handling of hazardous waste placed workers in imminent danger of death or serious bodily injury?
Rule	Under 42 U.S.C. § 6928(e) and (f), knowledge means actual awareness or belief that the conduct is substantially certain to cause such danger; circumstantial evidence, including deliberate avoidance of information, can prove it; and prior knowledge of illegal activity is evidence of later knowledge.
Application	Taylor had NIOSH reports from 1988 and 1991 showing mercury above safe levels; Randall received daily operational reports and a stream of permit violation notices; Hansen personally ordered wastewater into oil tanks; workers complained to all three and were burned by caustic water; an expert testified they were in danger of death or serious injury.
Conclusion	A reasonable jury could find actual awareness. Evidence sufficient; conviction affirmed.

The Rule row contains no facts; the Application row contains no law. If a sentence in your own analysis holds both a statute and a fact, you are announcing rather than reasoning. Split it.

What I see students get wrong with this particular case

Hansen punishes lazy briefing in specific ways.

They report the sentences but not the standard of review. The sentencing section is really about jurisdiction. A brief that says “the court upheld the sentences” misses the rule: appellate review of a refusal to depart exists only if the trial judge misunderstood his own authority.

They conflate sufficiency with instructions. The defendants attacked the knowledge element twice, once as insufficient evidence and once as a defective instruction. Those are different questions with different standards of review: denial of acquittal is reviewed de novo, in the light most favorable to the government, while instructions are read as a whole for whether they misled the jury. Keep them on separate lines.

They treat the reasonable doubt slip as harmless error. The court says an erroneous reasonable doubt instruction is structural error, which cannot be harmless; its actual move is to find that, read in context, the instruction was not erroneous at all. That is the holding worth writing down.

They skip the bankruptcy argument as a side issue. Randall’s central defense was that the bankruptcy court, not he, controlled the money. The court’s answer, drawn from Kovacs, is a clean transferable rule: financial distress and court supervision do not excuse compliance with environmental criminal statutes.

How to read an appellate opinion so the brief writes itself

Appellate opinions follow a pattern, and once you see it your reading time halves.

1. Read the first paragraph and the last. In Hansen the first names the three defendants, the four statutes, and the word AFFIRM; the last repeats it. Now read the rest as a search for why.
2. Find the standards of review. Courts state them at the top of each section: abuse of discretion, de novo, plain error, clear error. Highlight them; the standard often decides the issue, and it belongs in your Rule.
3. Mark where the court says an argument is “meritless” or “without basis.” Give those one line and spend your space where the court actually works, which in Hansen is the sufficiency analysis and the reasonable doubt instruction.
4. Separate what the court holds from what it quotes. This opinion quotes the Ninth Circuit’s Iverson decision on responsible corporate officers at length, then resolves the issue on narrower grounds. Iverson is persuasive authority, not the holding of Hansen.
5. Pull the facts last. Once you know which arguments the court took seriously, you know which facts are load bearing. The gap between the 70 gallons per minute the company promised and the 35 it installed feeds the knowledge inference; the exact number of mercury cells does not.

Writing your own brief from here

Take a blank page. Write the caption exactly: United States v. Hansen, 262 F.3d 1217 (11th Cir. 2001) (per curiam). Under it, fill the six parts in order, in your own sentences, with a hard cap of one page even for a case this size. If you catch yourself copying my phrasing, stop and reread the opinion instead. Compressing forces you to decide what matters, and a borrowed compression teaches you nothing.

When you finish, test it. Close the opinion and answer three questions from your page alone: what did Randall Hansen argue about the bankruptcy court, why did the reasonable doubt instruction survive, and what must a defendant know to be guilty of knowing endangerment under RCRA? If you can answer all three in under a minute, the brief works. If not, the missing answer tells you which section to rewrite.

That is the whole method: six parts in order, IRAC for a single point, and a citation you have actually checked, so the case you brief is the case you were assigned.