Multipurpose devices and methods for sealing, measuring, and surging fluids in casings

A multipurpose casing assembly comprising:

• an upper rigid-circular plate including a first central plate hole, wherein the first central plate hole includes a plurality of tapered threads;
• a lower rigid-circular plate including a second central plate hole;
• a first layer of rubber material, wherein the first layer of rubber material is positioned on a top of the upper rigid-circular plate, wherein the first layer of rubber further comprises a first central rubber hole aligned with the first central plate hole and the second central plate hole,
• a second layer of rubber material, wherein the second layer of rubber material is positioned on a bottom of the lower rigid-circular plate, wherein the second layer of flexible rubber material includes a second central rubber hole, wherein the second central rubber hole is aligned with the first central plate hole, the second central plate hole, and the first central rubber hole;
• a third layer of rubber material, wherein the third layer of rubber material is positioned between the upper rigid-circular plate and the lower rigid-circular plate, wherein the third layer of rubber material includes a third central rubber hole, wherein the third central rubber hole aligns with the first central plate hole, the second central plate hole, the first central rubber hole, and the second central rubber hole, wherein the third layer of rubber material has a slightly larger outside diameter than an inside diameter of a separate subsurface cylindrical casing in which the multipurpose casing device is positioned;
• a placement tool, wherein the placement tool comprises a hollow core cylindrical tool including a plurality of tapered male threads on a first end of the hollow core cylindrical tool for detachable securement to the plurality of tapered threads of the upper rigid-circular plate, wherein a second end of the hollow core cylindrical tool further comprises a plurality of male threads with an O-ring, wherein the hollow core cylindrical tool further comprises an internal foot valve, wherein the internal foot valve prevents a backflow of a fluid inside the hollow core cylindrical tool;
• and
• a cylindrical cartridge including media for treatment of a contaminated fluid forming a fluid-treatment cartridge, wherein the fluid-treatment cartridge is positioned on top of the multipurpose casing device, wherein the multipurpose casing device and the fluid-treatment cartridge are in fluid communication with the subsurface cylindrical casing, wherein the subsurface cylindrical casing includes an inlet screen and an outlet screen, wherein the multipurpose casing device and the fluid-treatment cartridge receives fluid from the inlet screen and the fluid treatment media contacts the fluid as the fluid flows from the inlet screen to the outlet screen, wherein the inlet screen is at a lower elevation than the outlet screen.