Mobile tower in public park

With thanks to all, need advice. A fifty feet high mobile tower has been Installed in the public park just behind my society. Park is of East Delhi Municipal Council EDMC. It's surrounded by three huge societies. Densely populated. Almost 70 families are directly facing the tower. To some distance is less than ten meters. In these families most are senior citizens, or women headed families. One school is also there. Park is small. EDMC or for that matter no any other agency contacted the residents here for any pre survey. Nor residents have been informed about the installation and radiation frequency. We are in dark , scared of our health hazards and want it to be removed. My question is Can such a huge MT can be installed in public park, small in size, and that too in such dense residential area? Is any pre survey not required? Does the pre- consent of the residents not mandatory/ required. Is such huge construction activity is legal in public park? Who would be responsible for health issues. What if property rates go down because of this MT. Any way to claim from MCD? Various other issues are there. Right now is this installation in public park is legal? How to get it removed?