Solan: With environmental pollution becoming a cause of concern for villagers residing on the periphery of polluting units, the pollution control board has adopted a tough posture to keep pollution levels under check. A committee constituted by the state high court is already inquiring into the unscientific disposal of muck allegedly by the Bagha-based JP cement plant where the failure of the plant to take safety measures is leading to muck flowing down and damaging houses, water sources and water mills. Local residents had filed a writ petition in the court regarding this.