Not generally, but several activities carry their own requirement. An owner or operator of an underground storage tank must demonstrate financial responsibility under California law, and insurance is one accepted mechanism. Contracts do most of the rest: public agencies, developers, and lenders commonly require contractors pollution liability before work starts, particularly on demolition, abatement, grading, or anything disturbing soil. Trades handling lead or asbestos face their own certification rules, and those projects are usually where a general contractor asks for the certificate.
Related FAQs
Often yes, because conditions like mold or legacy contamination can surface unexpectedly on owned property.
It depends on the form. Some respond to sudden events only, others may include gradual conditions. We can review the wording with you.
Usually not. Standard GL forms largely exclude pollution, which is why a separate policy typically applies.

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