SEATTLE (AP) — A company backed by the Chinese government says it is ending its seven-year effort to build one of the world’s largest methanol plants along the Columbia River in southwestern Washington. Northwest Innovation Works on Friday told the Port of Kalama it will terminate its lease, ending the $2.3 billion project following several legal and regulatory setbacks. The company proposed to take fracked natural gas from Canada and convert it into methanol, which it would then ship to China to make ingredients for plastics. The state Department of Ecology denied a key permit for the project in January, saying it would create too much pollution.