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As for tree roots, their tough to stop regardless.
You can use a silt sock on the pip and it helps, but eventually they will win.
On some lawns I've worked on, I've found not only large 3" runners 20 feet past the drip-line, but also a few fibrous root masses out that far also.
Only fix to me is to use heavy PVC with the drainage holes, silt sock, and a good clean-out setup to run an auger through someday.
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