Gurugram, Oct. 31 -- The Gurugram Metropolitan Development Authority (GMDA) has asked the National Highways Authority of India (NHAI) to expedite permission for laying an underground master pipeline under Dwarka Expressway, which would ensure water supply in Sector 58 to Sector 80, which at present faces extensive water shortage during summers, said officials on Thursday. GMDA officials said that they have submitted all details and plans to the highway authority seeking permission to resume the work, which was stopped last month after the Dwarka expressway witnessed road subsidence at two locations. The authority was laying two segments of pipelines each of 340mm under the Central Peripheral Road (CPR), which is part of Dwarka expressway as it will ensure that the entire master pipeline from Chandu Budhera to Sector 72 water boosting station is completed. According to the GMDA official, the cost of this project, to lay a 2,000 mm pipeline is Rs.8.5 crore. This project will help in completing the entire master pipeline from Chandu Budhera water treatment plant to Sector 72 boosting station thus ensuring adequate water supply across sector 58 to sector 80. GMDA officials said that the 1,600 mm master pipeline was originally laid by Haryana Shahari Vikas Pradhikaran (HSVP) in 2012, running from Chandu Budhera to Dhankot, then along the Dwarka Expressway and CPR to the Sector 72 station. However, officials said that during realignment of the road by the National Highways Authority of India (NHAI), the entire pipeline was laid again except for a 300 metres stretch near CPR in Sector 36, where it could not be laid due to land issues. A senior NHAI official said that the pipeline work has been stopped as the GMDA has not taken permission. "There were two incidents of road cave-ins while this work was being carried out and it posed safety issues for the expressway. We have asked the GMDA to share the details of the work which will be evaluated by the NHAI."...