As the article states, Chevron agreed to pay a fine of approximately $3 million and agreed to invest $150 million into its refinery infrastructure to reduce the risk of air pollution, as part of the settlement with the EPA. If anybody is interested in the details, here’s the link to the article.
https://www.sfchronicle.com/bayarea/article/Chevron-agrees-to-150M-settlement-with-EPA-for-13334740.php