Who is responsible for seeing that the approved material is being placed in a raised leaching bed and mantle?

• A. The owner
• B. The inspector
• C. The installer
• D. The hauler

Answer: (C)

The on-site installer is responsible for making sure the approved material is placed in a raised leaching bed and mantle. They are the one who carries out the actual construction, so they must verify that the fill and materials match what was approved and that they are placed exactly as specified in the design—correct type, proper layering, and correct compaction and depth. The inspector’s role is to observe and verify that the installation follows the plan and code, and to document compliance, but the installer is the person performing the placement. The owner is responsible for overall ownership and maintenance, while the hauler’s job is simply to deliver materials.