LIVINGSTON CA / May 17, 2013 —
Utility Rates Stakeholders Committee Mtg.
Monday – May 20, 2013 at 5:30 p.m.
City Council Chambers
Information and Discussion
1. Well #16
2. Well #13
3. UCMR (Unregulated Chemical Monitoring Rule) 3, testing in progress
4. Chromium 6 & 3 MCL expected in about 2 years will have an effect in our system
5. Water Feasibility Study
6. City Hall and PD Generator Replacement
Notes from TheGardeningSnail. The Following has been excerpted from the California Department of Health Water System Inspection Report or other sources
WELL NO. 16 has been offline since September 2011 because the media in the arsenic removal treatment system has been exhausted… It is expected that a media change out will occur in the near future and Well No. 16 will be put back online by summer 2013…The City must provide a copy of the plans and specifications for the treatment plant upgrades. In addition, the City will be required to update the Operations Plan for the Well No. 16 arsenic treatment system and submit a Permit Amendment application…
WELL NO. 13 must be monitored on a quarterly basis for arsenic. The results must be submitted to the Department via EDT by the 10th day of the following month…(it) is also offline due to arsenic at elevated levels but below the MCL. The City is currently flushing the well to waste and collecting a bacteriological cycle test and hopes to bring the well online by mid-April if the cycle test results are coliform negative…The City lapsed in its quarterly sampling of Well No. 13 and will resume the monitoring during first week of April 2013.
UCMR (Unregulated Chemical Monitoring Rule) 3 Testing. …“The 1996 amendments to the Safe Drinking Water Act (SDWA) require that once every five years, the U.S. Environmental Protection Agency (EPA) issue a new list of no more than 30 unregulated contaminants to be monitored by public water systems (PWSs). The Unregulated Contaminant Monitoring Rule (UCMR) provides EPA and other interested parties with scientifically valid data on the occurrence of contaminants in drinking water. These data serve as a primary source of occurrence and exposure information that the agency uses to develop regulatory decisions.” excerpted from The Third Unregulated Contaminant Monitoring Rule (UCMR 3)-Searching for Emerging Contaminants in Drinking Water Fact Sheet.
“Chromium is a heavy metal that occurs throughout the environment. The trivalent form is a required nutrient and has very low toxicity. The hexavalent form, also commonly known as “chromium 6,” is more toxic and has been known to cause cancer when inhaled. In recent scientific studies in laboratory animals, hexavalent chromium has also been linked to cancer when ingested.” excerpted from Chromium–6 Fact Sheet: California Department of Public Health