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9.A. - Page 3 <br /> Chromium, including hexavalent chromium, is a naturally-occurring, inorganic chemical <br /> that has been widely used in many industrial processes. In 2011 , California established <br /> a Public Health Goal of 0.02 ppb for hexavalent chromium, which is also referred to as <br /> Chromium 6 (Cr6). Later in 2014 California adopted an enforceable Maximum <br /> Contaminant Level of 10 ppb. Currently there is no federal standard for hexavalent <br /> chromium. <br /> Redwood City sampled two locations on four separate occasions for Cr6 in 2014 and <br /> 2015. Samples from both locations had levels of Cr6 below the Maximum Contaminant <br /> Level, but above the PHG. The average level of Cr6 detected in Redwood City was <br /> 0.03 ppb which is one point above the PHG of 0.02 ppb. In two of the eight samples, <br /> Cr6 was not detected at all, and the highest level detected was 0.05 ppb. <br /> To help inform the public about these health goals, the Public Works Services <br /> Department has added information on the City website including a frequently asked <br /> questions page specifically for lead in drinking water at <br /> www.redwoodcity.org/waterquality. The public is also notified annually of their risk <br /> through the distribution of the annual water quality report. Individual households are <br /> also notified if lead is known to exceed the PHG from the household tap sampling. <br /> ALTERNATIVES <br /> Council may request additional information from the Public Works Services Department <br /> in regards to information found in the Report, and/or questions or issues raised in the <br /> public hearing. <br /> FISCAL IMPACT <br /> There is minimal cost to prepare the Report and conducting the review process (the <br /> approved Water Enterprise Fund budget includes staff resources to meet State and <br /> Federal regulatory requirements). There are no recommended actions in the Report that <br /> would require additional expenditures. <br /> ENVIRONMENTAL REVIEW <br /> This activity is not a project under CEQA as defined in CEQA Guidelines, section <br /> 15378, because it has no potential for resulting in either a direct or a reasonably <br /> foreseeable indirect physical change in the environment. <br /> 94A/ i7 <br /> JUSTIN CHAPEL <br /> PUBLIC WORKS SUPERINTENDENT <br />