Formal Letter - against the new supermarket

I am writing to express my concern regarding the new supermarket which is about to be built in our city. My wish is to convince our society and the Government with this letter to take action and stop the project. The first reason are the children.
For the past ten years, the area has been full of children, spending their free time there, playing in the playground – enjoying the precious moments of their childhood. What will happen if eventually the supermarket is built? Cars, pollution and noise will implicate danger to them. They are to young to defend themselves against the thieves, strangers and homeless people. Accidents, constant worry, stress. Our children will be forced to stand the harrowing buzz and menace of the overcrowded car parking areas instead of spending time on games. Why do we want to take away all the things which are so important to them? There is no other place for them to spend their spare time within the distance of three kilometers. But the supermarket can be opened in any other place.
It is not the only reason to turn against thins location. The dedicated site is actually the last large green spot of the town.
During the construction work many old trees would be cut down and many animals killed. We cannot just destroy their natural habitat and force them out, they have a right to be here.
Supermarket is also dangerous for small shops which sell their products at prices that are a little higher. They would be destroyed in the uneven competition. Can we afford a massive wave of unemployment and social issues connected with it?
The only way to solve the problem is not to build the supermarket or build it in the outskirts of the city. This would be better to our children, nature and in the end – our city, which is not big and whose one of the main sources of income is tourism. We should take care of our park and children, make the city safer and more attractive to people from all over the world.