So what pollutant chemicals do cars actually contain? This is actually really funny.
Well let's see, there's engine oils, Mineral, Semi- and Synthetic. Plus Differential hypoid oil. Anti-freeze. Transmission fluid (ATF), brake fluid, Compressor gas (halogenated on older cars, a massive pollutant), more ATF in the clutch master and slave cylinders, and the power steering rack, plus the oil from broken shock absorbers and hydraulic struts for tailgates and bonnets, and then the nasty foam that's in the seats, sound insulation, dashboard and carpets for most models.
Once you've separated all those into their required EU bins for various recycling, and then paid someone else to take them away, you realise why there aren't so many legal scrapyards around. Add on top of that the insurance that companies should be paying for their employees working in a hazardous environment, and most scrapyards couldn't afford to operate legally.
With that in mind, I wish the best of luck to the OP, and if he ever gets his hand on spare parts for a BMW E30, let me know.