(Richland, WA)  --  The Washington Department of Corrections says a man who was on death row for nearly 20 years has died of cardiac arrest.  Officials say 46-year-old Dwayne A. Woods died Sunday night while staying at a medical facility in Richland.  Woods received the death penalty in 1997 after being convicted of two counts of aggravated first-degree murder in the deaths of 22-year-old Telisha Shaver and 18-year-old Jade Moore in Spokane Valley.  Governor Jay Inslee announced a moratorium in 2014 on state executions, and signed a reprieve last week for convicted child killer Clark Richard Elmore.