 750 KXL | Gas release makes a real stink O regonLive.com By Kurt Eckert, The Hillsboro Argus A distinctive rotten-egg like odor pervading downtown Wednesday afternoon came from a pressure release valve in west Hillsboro venting natural gas into the atmosphere. The foul odor continued to drift on the ... News - Thursday 9/1 - Natural Gas Venting Prompts Brief Evacuation Natural gas venting leads to Hillsboro evacuations Natural gas venting prompts brief evacuation in Portland-area neighborhood |