Chevron USA Inc. and Texaco Downstream Properties Inc. will repay the state $1.7 million to settle a lawsuit alleging they accepted money from a public fund for gas station cleanups without disclosing reimbursements from their insurers, Attorney General Martha Coakley said Wednesday.

The Massachusetts Underground Storage Tank Petroleum Product Cleanup Fund uses money collected from gas tank registration and delivery fees to compensate gas station owners and operators for the costs of cleaning up environmentally hazardous leaks. Claimants must notify the state if they seek reimbursements from other sources, including insurance companies, and return money to the fund if they succeed.