Soil Matrix Cleanup
A Soil Matrix Cleanup, which consists of a release of 500 PPM or less, lands within the DEQs simplest level of remediation. Pending that, during the decommissioning process, no holes within the tank are observed, the DEQ will not require any additional sampling or scope of work, in addition to the usual Soil Matrix Evaluation used to close the LUST file.
Standards for a Soil Matrix Cleanup
The standard by which the DEQ closes an open file for a Soil Matrix Cleanup is as follows:
- Removal or treatment of the contaminated soil is not required
- An abbreviated risk assessment is allowed for the site, which is called a Soil Matrix Evaluation
- The tank and the contaminated soil will remain within the ground
- The final steps include creating the Soil Matrix Report and submitting the report to the DEQ. Once reviewed and approved by the DEQ, the site will be considered DEQ Certified and the site will have a “Closed Status”.
For more information regarding Soil Matrix Cleanup, please see the DEQ UST Cleanup Manual.