I have 40 years of experience in the field of water quality and hydrology, with specific knowledge of pond aquaculture, environmental management, and surface water hydrology. I have published on such topics as water quality management in aquaculture ponds, mitigation of negative environmental impacts, and water supply for aquaculture and other purposes. I have testified 9 times on topics such as water use in aquaculture, effluents from aquaculture and seepage issues.