We are committed to safety, reliability, and environmental stewardship at the Topock Compressor Station. That commitment includes the investigation and cleanup of groundwater and soil at and near the station. The California Department of Toxic Substances Control (DTSC) and the U.S. Department of the Interior (DOI) oversee our efforts, and we also work closely with several nearby communities and Native American Tribes. We regularly meet with and invite input from several communities, Tribes, agencies, and organizations both upstream and downstream of the station. Tribal representatives also play a vital role in monitoring our project activities.
Extensive environmental studies have been conducted or are in progress at the Topock Compressor Station and surrounding area. These studies help guide cleanup and stewardship activities and ensure compliance with all operating permits and regulatory requirements. This page summarizes our environmental activities.
All data collected to date confirm that no chromium has reached the Colorado River: chromium has never been detected in any river water or sediment sample collected during the long-term monitoring program overseen by DTSC and DOI.
Other findings and cleanup activities include:
Explore more details about our groundwater cleanup activities on DTSC’s Groundwater Cleanup webpage.
With oversight by DTSC, DOI, and Tribal Monitors, all approved soil sampling activities have been completed. Results to date show that impacts from historical operations are mostly on and near the station property.
Additional sampling may be performed, if determined by the agencies, until the nature and extent of affected soil is defined. All sampling locations are carefully monitored to respect, avoid, and protect sensitive cultural and biological resources.
Soil investigation results will help DTSC, DOI, and PG&E determine what next steps may be needed. Meanwhile, some soils have already been fully characterized and removed from the property.
We take great care during all our project activities because the station is located within a culturally and ecologically rich area.
For example, we:
Program schedulesOpens in new Window. are subject to change but continually updated as needed and posted on DTSC’s project website.