Questão jurídica principal
Whether the prefectural decision was validly notified and enforceable.
Decisão extraída
The court held that service by simple mail did not prove delivery, and the authority failed to comply with the mandatory notification rules; the decision was therefore not shown to be properly enforceable.
Fundamentação extraída
Under the special notification rules, the prefectural decision had to be sent by registered mail; the authority bore the burden of proving notification. Since no proof existed, the presumption of receipt from non-return of the letter was insufficient.