United States Department of Transportation

Table 4-55: Leaking Underground Storage Tank Releases and Cleanups

Friday, April 14, 2017

		1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016
Total confirmed releases	87,528	126,816	184,457	237,022	270,567	303,635	317,488	341,773	371,387	397,821	412,392	418,918	427,307	439,385	447,233	452,041	464,728	474,127	479,817	488,496	494,997	501,723	507,540	514,123	521,271	528,521	532,420
Cleanups initiated	51,770	79,506	129,074	171,082	209,797	238,671	252,615	292,446	314,965	346,300	367,603	379,243	384,029	403,558	412,657	421,924	435,631	446,940	455,096	463,060	470,460	473,314	481,614	489,575	498,173	505,468	510,426
Cleanups not initiated	35,758	47,310	55,383	65,940	60,770	64,964	64,873	49,327	56,422	51,521	44,789	39,675	43,278	35,827	34,576	30,117	29,097	27,187	24,721	25,436	24,537	28,409	25,926	24,548	23,098	23,053	21,994
Cleanups completed	16,905	26,666	55,444	87,065	107,448	131,272	152,683	178,297	203,247	228,925	249,759	268,833	284,602	303,120	317,405	332,799	350,813	365,361	377,019	388,331	401,874	413,740	424,637	436,406	447,323	456,660	461,441
Releases not cleaned up	70,623	100,150	129,013	149,957	163,119	172,363	164,805	163,476	168,140	168,896	162,633	150,085	142,705	136,265	129,828	119,242	113,915	108,766	102,798	100,165	93,123	87,983	82,903	77,717	73,948	71,861	70,979

NOTES

All data are cumulative from the start of the U.S. Environmental Protection Agency's Underground Storage Tank program, which began in 1984.

Data represent fiscal year, October 1 through September 30.

SOURCES

1990: U.S. Environmental Protection Agency, Office of Underground Storage Tanks, personal communications, Nov. 17 and 18, 1998.

1991-2016: Ibid., UST Performance Measures, available at http://www.epa.gov/swerust1/cat/camarchv.htm as of Mar. 7, 2017.