Water sampling device in a stream (IMAGE) Integral Ecology Research Center Caption A polar organic chemical integrative sampler (POCIS) used by the study to detect toxic pesticides in surface waters installed within a stream below a trespass cannabis cultivation site on National Forest lands. Credit Integral Ecology Research Center Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.