Case Study Hydrogeochemical Evaluation, St. Johns Landfill and Smith and Bybee Lakes, Portland, Oregon By David Livermore, R.G., L.H.G., Principal, Hydrology, Geosciences, and Chemistry Published January 7, 2022 Key Contact Mr. David Livermore is a principal hydrogeologist and geochemist with 30 years of experience in solving complex earth science problems... Full bio