Document Overview
This case history describes PES-31 use at a BFI treatment facility in Itasca, Texas for landfarming of waste oil impacted black clay.
Initial TPH Compared With Final Sample Results
Reported Remediation Results
| Metric | Before / Initial | After / Final | Reported Change | Notes |
|---|---|---|---|---|
| TPH — average to sample range | 2,100 ppm | 125–382 ppm | Approximately 81.8% to 94.0% reduction | EPA Method 418.1; follow-up samples A, B, and C |
| TPH sample A | 2,100 ppm | 382 ppm | Approximately 81.8% reduction | Assessment test 04/02/92 |
| TPH sample B | 2,100 ppm | 288 ppm | Approximately 86.3% reduction | Assessment test 04/02/92 |
| TPH sample C | 2,100 ppm | 125 ppm | Approximately 94.0% reduction | Assessment test 04/02/92 |
Project and Application Details
PES Application Summary
PES-31 was applied as a one-time inoculation at a ratio of one gallon PES-31 to 2.0 cubic yards of waste oil contaminated soil. PES Nutrient Supplement was applied with water from the treatment facility water truck. The treatment lift was tilled twice per week, moisture was maintained by visual inspection and watering, and supplemental nutrients were added every 15 days when necessary.
Reported Outcome
The reported TPH sample results after treatment ranged from 125 ppm to 382 ppm, compared with the initial average TPH value of 2,100 ppm.
Key Takeaways
This case history provides a compact landfarming example with treatment volume, application ratio, nutrient addition, tilling frequency, and before/after TPH values.
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