PROCEDURE - COMPLETE TANK REMOVAL
Advantages

•  Allows for visual inspection to ensure no leaks have occurred.
• Provides peace of mind.
• Provides less liability for the property owners.

Disadvantages

• Most expensive option.
•  Accessibility may be a problem.
•  May impact landscaping.

PROCEDURE - CONCRETE (OR SLURRY) FILL

Advantages

• No excavation usually needed.
• Less expensive than removing the tank.
• Prevents collapse.

Disadvantages

• May shrink leaving void spaces which water can enter.
•  Added weight makes removing the tank in the future a more complicated and expensive procedure.
• You cannot ensure that no leaks have occurred from the tank.

PROCEDURE - SAND FILL

Advantages

• No excavation usually needed.
• Less expensive than removing the tank.
• Prevents collapse.

Disadvantages

• Added weight makes removing the tank in the future a more complicated and expensive procedure.
• You cannot ensure that no leaks have occurred from the tank.

PROCEDURE - FOAM FILL

Advantages

• No excavation usually needed.
• Less expensive than removing the tank.
• Prevents collapse.
• Adds much less weight than that of concrete or sand filling.

Disadvantages

• You cannot ensure that no leaks have occurred from the tank.