The issues in this preliminary hearing are whether the South Florida Water Management District (WMD) has jurisdiction and whether Petitioners have standing. In part, the issue of WMD's jurisdiction involves sub-issues as to Petitioners' timeliness in requesting an administrative hearing.Challenge to Water Management District was timely because filed within 21 days after actual notice; constructive notice ineffective. However, challenge dismissed because standing not proven. Alleged injuries either speculative or outside zone of interest.