This box is from the California Department of Toxic Substances Control.

In January 2008, California's Department of Toxic Substances Control stated that perchlorate is becoming a serious threat to human health and water resources.

The investigation is overseen by the California State Department of Toxic Substances Control.

Project Kaisei is also partnered with the California Department of Toxic Substances Control.

For example, the California Department of Toxic Substances Control distinguishes discarded mercury-containing products and waste oil as separate groups of hazardous waste.

California Department of Toxic Substances Control (DTSC)

"No one had ever heard of them - we thought it was just a European problem," said Kim Hooper, a specialist with the California Department of Toxic Substances Control.

In 2000, the company entered into a consent decree with the California Department of Toxic Substances Control (DTSC).

Currently the Stringfellow Site is managed by the California Department of Toxic Substances Control (DTSC).

In 1994, cancer-causing polycyclic aromatic hydrocarbons were found at levels 19 times the safe level following testing by the California Department of Toxic Substances Control.