In a precursor to any potential legal action, a grassroots organization expects to take its next step in the fight against the Nestlé water-bottling plant by filing an administrative appeal with the city of Sacramento this week. A Swiss public TV crew is coming to Sacramento Thursday to interview members of the group, Save Our Water Sacramento, which will re-screen the bottled-water documentary "Tapped" at 7 p.m. Thursday at Crest Theatre, 1013 K St. Afterwards, group leaders will discuss plans to appeal the city's designation of the Swiss company's $14-million construction project as ministerial, rather than discretionary. A discretionary designation of a project that could possibly har