Should I say something about my supervisor throwing CDs in the trash?

I'm working at goodwill for my community service. I work in the back accepting and sorting donations. Someone donated a bunch of old CDs. I asked my supervisor where i should put them and he told me to throw them in the trash. It's like a 50 gallon bucket. When it's full we take it and dump it all in a giant bin but I don't know where it goes after that. Well I read that CDs can release toxic chemicals into land fills. I feel like the right thing to do is tell my supervisor that, and if he doesn't care then I'd talk to our manager about it. If they do nothing then I'd probably report the company. I don't know who to. I'm afraid to do that because I don't want to piss anyone off, but I also don't want to pollut the environment

Should I say something about my supervisor throwing CDs in the trash?
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