Removing Motor Oil Contamination from Soil

How to Clean Oil-Contaminated Soil for Replanting

After two trees died in the same spot, you dug a 6×6-foot hole, 18 inches deep, and found oil streaks in the upper soil. You want to remove any remaining contamination before replanting.

Best Remediation Method

The most effective approach is exactly what you’ve already done: excavate and replace the contaminated soil. Replace it with the same type of native soil to avoid creating a “bowl effect” where water pools due to differing drainage rates. You typically don’t need to dig deeper than 18 inches.

Key Considerations

• Match the replacement soil texture to the surrounding native soil.
• Ensure the new soil is free of contaminants.
• Monitor the site for any recurring oil seepage.

Once the clean soil is in place, you can safely replant a tree in that location.