THE SALINAS POLICE DEPARTMENT IS LOOKING FOR A MAN WHO WENT MISSING LAST WEEK.    49-YEAR-OLD TIMOTHY KURTH WAS LAST SEEN AT THE COLONIAL MANOR ASSISTED LIVING FACILITY AT 6-4-5 WILLIAMS ROAD LAST WEDNESDAY MORNING. KURTH IS 5-FOOT-10, 150-POUNDS, WITH GRAY HAIR AND BROWN EYES.     HE WAS LAST SEEN WEARING A DENIM JACKET, JEANS, AND BROWN COWBOY BOOTS.    ANYONE WITH ANY INFORMATION IS ENCOURAGED TO CONTACT THE SALINAS POLICE DEPARTMENT INVESTIGATIONS BUREAU.