I suspect the city of philadelphia has been using solid human waste (sludge) as a ground cover along the Schullykill River Trail. I would like the city to provide the Material Safety Data Sheet for this organic material. I would also like to know why sludge is being used in place of mulched leaves along this pathway.
It's got a disgusting smell, children play in it and trail users breath it in. We've got enough risks breathing the sewage silt from the leaking Reading sewage plant which was deposited along the river banks during the last 2 storms.