Rohtak, July 16 -- Nearly 70% industries identified as potential contributors to air pollution in the Hisar district are yet to gain access to the piped natural gas (PNG) network.

This highlights a major infrastructural bottleneck in the state's efforts to reduce industrial emissions, as revealed in a status report submitted by the regional officer of the Haryana State Pollution Control Board (HSPCB) to the National Green Tribunal (NGT) on July 10.

According to the report, a total 99 of the 140 industrial units (nearly 70%) holding valid consent to operate (CTO) are located outside the existing PNG pipeline network in Hisar.

However, the report claims that for 105 industrial units where the PNG pipeline network is not available, the Ha...