I. Ground Improvement Techniques

1. For wick drains, are contractor submittals required that include proposed equipment and materials, method(s) for addressing obstructions, and method(s) for splicing wick drains.
   
       (Yes   /   No   /   Unknown or N/A)

2. For lightweight fill, are minimum/maximum densities, gradation, lift thickness, and method of compaction specified?
   
       (Yes   /   No   /   Unknown or N/A)

3. For vibro-compaction, are contractor submittals required that include proposed equipment and materials? Are methods of measurement and acceptance criteria specified?
   
       (Yes   /   No   /   Unknown or N/A)

4. For dynamic compaction:

   1. If method specification is used, are the following specified: tamper mass and size; drop height, grid spacing; applied energy; number of phases or passes; site preparation requirements; subsequent surface compaction procedures?
      
          (Yes   /   No   /   Unknown or N/A)

   2. If performance specification is used, are the following specified: minimum soil property value to be achieved and method of measurement; maximum permissible settlement?
      
          (Yes   /   No   /   Unknown or N/A)

5. For stone columns, are the following specified: site preparation, backfill materials, minimum equipment requirements, acceptance criteria and quality assurance procedures?
   
       (Yes   /   No   /   Unknown or N/A)

6. For grouting, are contractor submittals required that include proposed equipment and materials. Are methods of measurement and acceptance criteria specified?
   
       (Yes   /   No   /   Unknown or N/A)

*A response other than (yes) or (N/A) for any of these checklist questions is cause to contact the appropriate geotechnical engineer for a clarification and/or to discuss the project.