Shasta GrouuaI 7Biiyin HalfYtOf KHUM-TY7a\WASHINGTON M — The ^ Communications Commission {!- yesterday authorized Shasta!Telecasting Corp., which operates TV station KVIP at Red-Yading, Calif., to acquire a 50 per , cent interest in proposed chan- . nel 13 station KHUM-TV, Eu- r reka. Calif. vThe interest will be acquired by reimbursing Carrol R. Hauser, who holds the Eureka permit. some $92,500 for expensesincurred in getting construction started.acfThe commission also an- d nounced addition of channel 6 ajto Eureka.