A St. Joseph chemical company has agreed to clean up several of its sites there at a cost of ten to $15 million and to pay almost $100,000 to the state.

HPI Products manufactures herbicides and pesticides at its plant in St. Joseph. The company and president William Garvey pleaded guilty to federal charges of illegal storage and disposal of hazardous waste earlier. Garvey served six months in prison and paid a $100,000 fine. The company paid another $300,000.

Now the company will pay the state civil penalties and for the costs of monitoring cleanup. Garvey also has to sell his car and boat collection and pay the state 45% of the proceeds.