Lead Exposure in Child

Has anyone here dealt with high levels of Lead in blood tests? My sons is elevated and I have an appointment this week in my home with public health! I’m freaking out I don’t want my baby to get sick he is one! As of now I have removed all his toys 😞 until they can be tested I almost want to leave the house and not come back until we find out the source of lead! Our house we are renting and was built in 1985 we live 3 blocks from freeway and across from electric and gas warehouse/plant! Any recommendations on how to help my baby’s body get rid of this ? Thank u