SCH Number 2025020705

Project Info

Title

Remedial Action Plan for the Former Mouren-Laurens and Leach Oil Sites Project

Description

The Project is the approval and implementation of the 2021 RAP (Appendix A to the Final IS/ND) submitted to the Los Angeles Regional Water Quality Control Board (RWQCB) by EKI Environment and Water, Inc., (EKI), as updated by the conditions and modifications in the RWQCB’s detailed response letter dated April 22, 2022. The updated RAP addresses the contamination of the MLOC and LOC Sites through a series of actions. The implementation of the updated RAP requires development of various studies and workplans and their implementation under RWQCB oversight after receiving RWQCB approval. The proposed remedial approach will require at least: (1) demolition activities, (2) baseline risk assessment and development of cleanup goals, (3) additional assessment to fill data gaps, (4) on-site structures removal, (5) targeted soil excavation, (6) pilot testing and bench-scale testing, (7) SVE system operation, (8) sparging system operation, (9) in-situ chemical oxidation, (10) monitoring specific to each remedial technology to evaluate efficacy of the remedy (11) monitored natural attenuation, and (12) execution of a deed restriction and environmental covenant. Workplans will be required to collect additional information prior to activating the full-scale remedy.

3 documents in project