Building ground suddenly a biotope

So Franz could build within the building window also within the biotope?

Yes, unless someone discovers a protected animal in a puddle.

But as soon as he is allowed to be exempted, he must then observe the biotope exactly?

Yes, provided the exemption concerns nature conservation issues.

Thank you, of course, that does not yet clarify Franz's problem of whether excavations within the biotope are allowed. The exact wording from the correspondence would be helpful, but Franz was not yet willing to quote it here or post it as a photo.

The wording was: "Excavations in the area of the [Biotop] are to be avoided".

to avoid

Doesn't mean forbidden, does it?

Doesn't mean it's forbidden?

Depends on the context, for example if the quote is part of a justification. But Franz apparently likes the incremental approach.

I won’t be able to access the entire text until Monday at work, but by then the decision will have already been made. The email was about which paragraph we use to not directly build on the [Biotop]. And then the sentence as an addition.