A lagoon basin cover that may be fabricated on site from a geotextile material that floats on the lagoon. In order to determine the state of the wire, the wire can be contacted by a contact element securely and reliably and in an exact manner. A pressurized fluid delivery system includes a fluid nozzle in communication with at least one fluid source. A second blade is disposed at one end of the second shaft aperture and a sliding slot with a toothed portion at another end.