Facility detail

ALLEGRO MICROSYSTEMS INC

115 NORTHEAST CUTOFF, WORCESTER, MA, 016061224

Parent company: SANKEN ELECTRIC CO LTD

Year-over-year total releases

Reported on-site TRI releases in pounds, grouped by reporting year.

The 10 chemicals with the highest cumulative on-site releases across all available years.

Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.

Year	Nitric acid	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	1,1,1-Trichloroethane	Xylene (mixed isomers)	Hydrogen fluoride	Total
2011	—	120	—	—	226	429
2010	—	127	—	—	245	474
2009	—	90	—	—	210	300
2008	—	118	—	—	276	495
2007	—	106	—	—	226	440
2006	—	643	—	—	165	926
2005	—	1,006	—	1,975	250	3,348
2004	760	1,069	—	563	213	2,722
2003	1,428	852	—	2,461	173	5,032
2002	1,054	471	—	1,282	173	3,359
2001	1,038	781	—	1,102	205	3,546
2000	1,255	2,419	—	2,776	300	7,379
1999	920	2,230	—	1,490	240	5,442
1998	1,060	2,440	—	3,030	210	7,310
1997	1,610	1,440	—	780	100	4,662
1996	4,200	—	—	455	110	6,091
1995	4,780	524	—	846	116	7,279
1994	5,389	—	—	1,982	108	8,138
1993	1,408	2,173	—	1,032	370	5,392
1992	2,800	1,660	—	1,870	300	7,545
1991	12,400	8,200	8,300	9,700	1,200	41,900
1990	14,802	11,328	8,265	7,026	1,642	44,697
1989	9,714	11,270	7,560	5,300	1,337	36,521
1988	—	500	9,550	—	250	11,050
1987	—	500	12,750	—	—	13,250