Statute treatment: 40 C.F.R. § 261.21

Ranked leading cases interpreting this statute, drawn from 21 citation events across 17 distinct cases.

21citations total

17distinct interpreting cases

14distinct courts

0citations in last 5y

1983–2017year range

Top 15 leading cases

#1 United States v. Steven M. Self (1993) ca10 95 own cites 2× in case

#2 24 Leggett Street Ltd. Partnership v. Beacon Industries, Inc. (1996) conn 75 own cites 2× in case

#3 United States v. Christian A. Hansen (2001) ca11 161 own cites 1× in case

#4 United States v. South Carolina Recycling and Disposal, Inc. (1986) scd 81 own cites 1× in case

#5 American Petroleum Institute v. Environmental Protection Agency (2017) cadc 14 own cites 2× in case

#6 United States v. Douglas Hoflin (1989) ca9 42 own cites 1× in case

#7 United States v. Hayes International Corporation and Louis H. Beasley (1986) ca11 28 own cites 1× in case

#8 United States v. William Dee Robert Lentz Carl Gepp (1990) ca4 24 own cites 1× in case

#9 ABC Holdings, Inc. v. Kittitas County (2015) washctapp 14 own cites 1× in case

#10 United States v. Jg-24, Inc. (2004) prd 11 own cites 1× in case

#11 United States v. WCI Steel, Inc. (1999) ohnd 10 own cites 1× in case

#12 Gallagher v. T v. Spano Building Corp. (1992) ded 3 own cites 2× in case

#13 United States v. CLOW WATER SYSTEMS, a DIV. OF McWANE, INC. (1988) ohsd 5 own cites 1× in case

#14 Environmental Defense Fund, Inc. v. Lamphier (1983) ca4 33 own cites 1× in case

#15 United States v. Dillon (2004) ksd 1 own cites 1× in case

Ranking method: leading_score = ln(1 + own_citation_count) × √(mentions_in_case) × flag_factor, where flag_factor = 1.0 green · 0.6 unknown · 0.5 neutral · 0.4 yellow · 0.3 procedural · 0 red. Red-flagged cases excluded — their interpretation has been undermined and shouldn't lead the list. Top 20 returned per statute. Open any case for full G Cite, trajectory, and per-circuit treatment.