WHILE TAXIING ACROSS A RWY ENRTE TO PARKING; AN LTT ACR ACFT STRUCK DEBRIS CAUSING DAMAGE TO 2 BLADES OF A 3 BLADED PROP. FOREIGN OBJECT DAMAGE.

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HOLDING SHORT OF RWY 28L ON TXWY C1 I WAS GIVEN CLRNC TO CROSS TO THE HANGAR. THIS CLRNC WAS GIVEN AFTER A JET HAD DEPARTED RWY 28L. 1/2 WAY ACROSS RWY 28L I WAS INFORMED BY GND CTL THAT A L OR R TURN WOULD HAVE TO BE MADE FROM MY POS. I THEN STOPPED THE ACFT JUST BEYOND THE CTRLINE OF RWY 28L. I THEN LOOKED TO THE R TO CONFIRM THAT THERE WAS SUFFICIENT ROOM TO MAKE THE TURN. I CLRLY SAW THAT THE RWY LIGHTS WERE FAR ENOUGH AWAY TO MAKE THE TURN SAFELY. AFTER THE TURN WAS MADE ON RWY 28L; AND JUST PRIOR TO THE TURN ONTO TXWY F; I HEARD A NOISE OUT THE R SIDE OF THE ACFT THAT SOUNDED LIKE SPLASHING WATER. I THEN VISUALLY INSPECTED THE R WING; NACELLE; AND PROP FROM THE COCKPIT. EVERYTHING APPEARED NORMAL SO I CONTINUED TO THE HANGAR WHERE AFTER SHUTDOWN I INSPECTED THE R SIDE. I NOTICED IMPACT DAMAGE TO 2 OF THE BLADES ON THE #2 PROP. THE DAMAGE CONSISTED OF A HALF-DOLLAR SIZED BUMP ON 1 BLADE; AND AN INCH LONG SPLIT IN THE NICKEL LEADING EDGE OF THE ADJACENT BLADE. I THEN WENT INTO THE HANGAR TO CALL OUR MAINT PERSONNEL. CONSIDERING THE NATURE OF THE DAMAGE TO JUST 2 BLADES; I MAINTAIN THAT SOME TYPE OF DEBRIS WAS EITHER DEFLECTED OFF THE NOSEWHEEL OR PULLED UP FROM THE SURFACE INTO THE PROP.