jawbone - For rotenone, try your county game warden for advise or the MSU extension service for names of people w/ the permit for rotenone. You want someone close by so travel time does not make it cost more.
Edited Note: Oh Christ!, jawbone, the MMP booklet says you need a permit from the DNR to control unwanted fish populations. See chapter 14. They also have lists of certified aquatic pesticide applicators. Good Luck.