The Alberta Energy and Utilities Board was wrong to throw out a complaint by an Alberta family who were concerned that their health would be hurt by a sour gas well proposed by EnCana Corp., the province's Court of Appeal ruled yesterday. The EUB approved the sour gas well last year, despite concerns by Barbara Graff, Larry Graff and Darrell Graff, who said their chemical-induced asthma could be made worse by venting and flaring if EnCana's plan to place the well two kilometres from their home near Vulcan, southeast of Calgary, goes ahead. "The applicants raise a serious, arguable point which is of significance both to the practice and to the action itself, and is potentially meritorious," Madame Justice Marina Paperny wrote in granting the Graffs leave to appeal the AEUB ruling.