Question juridique clé
Whether the concession fee lacked a sufficient legal basis under cantonal and constitutional law.
Solution extraite
Section 47 WWG, read with section 17 GebV WWG, provided a sufficient legal basis for a special-use concession fee, with the land value as a ceiling and the economic benefit as the decisive limit.
Motifs extraits
The statute identified the object, debtor, and criteria for calculation; the ordinance validly specified the land-value and reference-interest methodology. For special-use fees, the formellgesetzliche basis need not determine an exact amount if the calculation criteria and limits are discernible.