Environmentalists have urged Tamil Nadu's State government to cancel permits of stone quarries located within 500 meters of a petroleum pipeline laid by Bharat Petroleum Corporation Limited (BPCL) in Karur, Tiruppur, and Coimbatore districts. The high-density pipeline carries petroleum products from Cochin Refinery to Coimbatore and Karur. R.S. Mugilan from the Tamil Nadu Environment Protection Movement cited a letter from BPCL received under the Right to Information Act. The letter states the pipeline was installed following the Petroleum and Minerals Pipelines Act, 1962. It requires strict safety measures during blasting operations within 500 meters of the pipeline. A third-party survey must review and approve blasting plans, ensuring peak particle velocity (PPV) stays below two inches per second. If PPV exceeds limits, pipeline operators must be alerted immediately. Additional Standard Operating Procedures (SOPs) are needed to control the number of detonators and account for local geology and weather. Mugilan highlighted that many quarries in Karur, including areas like Kuppam and Karudayampalayam, violate these rules. Of 335 quarries in Karur, about 75 lie too close to the pipeline. Tiruppur and Coimbatore face similar issues. The Tamil Nadu Pollution Control Board and other agencies have reportedly failed to enforce safety regulations. Mugilan warned of dangerous consequences due to lax enforcement and asked the government to act fast by checking compliance and revoking permits of violators.