Flexible structure and method for controlling the quality of liquids

A partially submerged structure for controlling the quality of liquids, comprising:

• a flexible resilient impermeable membrane formed into a single piece enclosure;
• float means for floating the structure, comprising the said membrane wrapped around a buoyant core and joined to itself;
• anchoring means for anchoring the structure so as to fix its position, whereby a liquid within the structure can be effectively separated from surrounding liquid, and
• wherein said anchoring means for anchoring the structure is comprised of at least one cleat embedded in said buoyant core to which a line may be secured.

A method to control the quality of a liquid, comprising the steps of:

• forming a plurality of modules from a resilient impermeable membrane;
• assembling said modules into strips by joining their edges together;
• delivering said strips of modules to the site;
• floating said strips of modules on the liquid surface over their intended position;
• extending and anchoring said strips tightly to the sea bottom;
• and
• joining said strips together to define a substantial liquid enclosure,
• wherein said method of joining said modules and strips is by passing hinge pins through loops on alternate modules and holding them in position by a nut on one end and a bolt head on the other.