Mumbai: Nearly seven months after BMC-appointed contractors excavated a 6,000 sq metre pit for a proposed underground car park along the Coastal Road interchange at Breach Candy, the site is set to be backfilled.“We were awaiting approval, as the plan for the car park was scrapped. Now the area will be filled up to the high tide line,” said a civic official. The project was shelved following strong opposition from locals, who feared that a new parking facility would worsen traffic congestion in the area. But the large pit dug for the project remained untouched.Earlier this year, residents flagged concerns over water accumulation in the excavated pit, warning that it could become a mosquito breeding ground. “After the downpour earlier this week, the pit filled up again. If the water isn’t drained soon, it could pose a serious health risk,” said Nigum Lakhani, a resident of a building facing the site. Walkers at the nearby Amarsons Park have also reported a spike in mosquito nuisance, with many now avoiding the open space where they would usually unwind after their daily walk.Kavita Chawla, a Breach Candy resident whose flat overlooks the Coastal Road, said the stagnant water has been a persistent issue. “It’s been there for months now and this large pit remains open as such. We need urgent action,” she said.The plan for the 246-space underground car park was dropped earlier this year. Protests began in Oct last year, soon after excavation work started. The underground car park was originally envisioned as a two-level facility with a surface car lift.