EE WAS HYDORBLASTING A STEEL VALVE STEM GUARD SECURING IT WITH HIS LEFT FOOT WHICH WAS NOT DONNED WITH THE CORRECT PPE AS REQD BY W-S INDUSTRIAL POLICIES & STANDARDS. THE EE SLIPPED LOSING HI S FOOTING CAUSING HIS LEFT FOOT TO ENTER THE WATER STREAM PATH, LACERTING THE METAARSOL AREA OF HIS LEFT FOOT