WASHINGTON, March 29 -- The U.S. Department of Transportation's Surface Transportation Board issued the following notice (Docket No. FD 36845) entitled "OmniTRAX Holdings Combined Inc. and HGS Railway Holdings Inc. - Continuance in Control Exemption - Santa Maria Valley Railroad LLC": * * * OmniTRAX Holdings Combined, Inc. (OmniTRAX), and HGS Railway Holdings, Inc. (HGS) (collectively, Omni-HGS), both noncarriers, have filed a verified notice of exemption under 49 CFR 1180.2(d)(2) to continue   more