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E~ <br />B. Sealing Conditions. 42 <br />1. Temporary Conductor Casing 42 <br />2. Permanent Conductor Casing 42 <br />C. Radial Thickness of Seal 43 <br />D. Sealing Material. 43 <br />1. Water 43 <br />2. Cement-Based Sealing Materials 43 <br />a. Additives 43 <br />b. CoolingWater 43 <br />3. Bentonite-BasedSealingMaterials 43 <br />E. Transition Seal 44 <br />F. Placement of Annular Seal Material 44 <br />Sectionl0.SurfaceConstmctionFeatures 45 <br />A Locking Cover. 45 <br />B. Casing Cap 45 <br />C. Flooding 45 <br />D. Bases 45 <br />E. Vaults 45 <br />F. Protection From Vehicles 46 <br />Section 11. Filter Pack. 46 <br />Section 12. Casing. 47 <br />A Casing Material. 47 <br />1. ChemicaICompatibility 47 <br />2. Used Casing. 47 <br />3. Plastic and Steel Casing. 47 <br />a. ASTM D3296 47 <br />b. ASTMD3295 47 <br />B. Multiple Screens. 48 <br />C. BottomPlugs 48 <br />D. Casing Installation. 48 <br />1. Cleanliness 48 <br />2. Joining Plastic Casing. 48 <br />3. Impact 48 <br />Section 13. Well Development 48 <br />A Mechanical Surging. 48 <br />B. OverpumpingandPumpSurging 49 <br />C. Air Development 49 <br />D. Water Jetting. 49 <br />E. Chemical Development. 49 <br />Section 14. Rehabilitation and Repair of Monitoring Wells. 49 <br />Section IS. Temporary Cover 49.XI