Coalition Letter on Public Comment Period for Draft Technical Support Document for the Proposed PHGs for THMs Jan 8, 2019 Comment Letters Agency: Office of Environmental Health Hazard Assessment Subject: Public Comment Period for Draft Technical Support Document for the Proposed PHGs for THMs Letter excerpt: The release of the draft technical support document (TSD) for the proposed Public Health Goals for trihalomethanes (THMs) by the Office of Environmental Health Hazard Assessment (OEHHA) is of tremendous interest to the drinking water community in California. As our industry has indicated in discussions with OEHHA staff dating back to 2010, the establishment of individual PHGs for each of the four regulated THM constituents would be a major departure from the current risk management approach in California involving regulation of total THMs. OEHHA’s proposed PHGs are likely to impact treatment operations that protect the public from acute health threats posed by water borne pathogens. We think it is critical to have an independent scientific review of this highly technical document. Additional time is needed to employ an appropriate technical expert to review the document and develop comments on our behalf, but we need OEHHA to allow for the time necessary for that review and the subsequent submission of comments based upon that review. Download comment letter
