THE EMPLOYEE AND A COWORKER WERE BUILDING A FILTER WALLIN THE SUMP TO HOLD CEMENT OUT. WHILE THEY WERE IN THE SUMP, WATER AND SLURRY GOT INTO HIS BOOTS AND ON HIS PANTS, CAUSING CHEMICAL BURNS TO BOTH FEET AND LEGS. HE WAS TRANSPORTED TO THE E.R. FOR EVALUATION AND TREATMENT AND GIVEN A LIGHT DUTY RELEASE.