we always used C&D for the last 30 or so years. this is only a show that they know what is wrong with the river. the river has been going down hill for the past 10 years, and all they could come up with is 85 degees temp in mid- summer. i seen the river turn white from sewer plants cleaning there tanks out. half a river was white, a half mile wide river. i did turn it in to D E R they told me that they didn't find anything wrong. three times i tryed this past year one evening i looked up river, gee the river turn turn white i call DER when i got out of river you guess it didn't find any thing wrong. flyman 3