Track your chemical stocks through EHS Assistant, an electronic information system that helps labs managers easily manage purchasing, receipt, and use of their inventory. Note: EHS Assistant may not work on all browsers. Use Firefox or Safari if you are having trouble accessing EHS Assistant. Also, we are currently phasing out the use of EHS Assistant for requesting hazardous waste pick-ups. To request a hazardous waste pick-up, please use the form in the Environmental Compliance category below.