(Olympia, WA)  --  A bill that would make it legal to grow hemp in Washington is awaiting Governor Jay Inslee's signature.  The House gave the measure final legislative approval this week, authorizing the state agriculture department to regulate the seed supply, check farmers' backgrounds, and inspect their operations.  If the bill is signed, the ag department will formulate rules for hemp production, including licensing fees and prevention of cross-pollination with marijuana plants.