Annular Sealing Method Clause Samples

Annular Sealing Method. Installation of the annular seal shall conform to State Water Well Standards and the requirements of the well permitting agency. A. The Contractor shall proceed with sealing operations after the Engineer verifies the depth of the top of the gravel and transition sand in the well annulus. B. The tremie pipe shall be installed no more than 5 feet above the fine sand transition seal before beginning cement grout seal placement. The bottom of the tremie pipe shall remain submerged in the grout sealing material maintaining a positive displacement throughout the sealing process until the grouting material has reached the ground surface. C. The Contractor shall take measures to ensure that the weight of the cement column does not collapse the well casing during the sealing operation. D. The annular seal will be required to be continuously placed in a single lift. E. Well development shall not commence until a minimum of 24 hours after placement of the seal.