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Answer
From: Fred Friedman (FRIEDMAN.FRED@EPA.GOV)
Date: Tue Mar 14 2000 - 11:48:50 EST 

Date: Tue, 14 Mar 2000 11:48:50 -0500 (EST)
From: FRIEDMAN.FRED@EPA.GOV (Fred Friedman)
Subject: RE: Decomposing polystyrene

March 14, 2000

It is my understanding that polystyrene doesn't really decompose, but breaks into smaller and smaller pieces of the same material, usually somewhere in excess of 50 years to make the material 'go away'.

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