A project to replace part of the Mother Lode Force Main Project was approved by the El Dorado Irrigation District Board of Directors at its June 10 meeting.
The firm of McGuire and Hester was awarded the contract to do the work at a cost of $1,068,682. The board approved another $130,000 to cover staff time and compaction testing. Contingency funding of the project was $107,000.
The 9-mile pipeline extends from the El Dorado Lift Station to the main gravity line that feeds the Deer Creek Wastewater Treatment Plant in Cameron Park.
According to the staff report, the pipeline, which was installed in 1979, needs to be replaced due to corrosion which has led to spills of raw sewage.
Approximately 45 percent of the original main has already been replaced. The new project involves replacing 2,350 feet of 12-inch pipe within Oakmont Lane, Lake View Drive and South Shingle Road in Shingle Springs.
Staff reported the project is expected to take 90 days to complete with work to begin mid-July.
The board also accepted a report on the quality of drinking water in the district. The California Health and Safety Code requires that water utilities with more than 10,000 service connections prepare a special Public Health Goal Report every three years if water quality measurements have exceeded any public health goal.
Staff reported that in the three years between 2010 and 2012, from 100 to 125 samples were collected by the district each month and analyzed for the presence of coliform bacteria. Three times in a three-year period, an initial sample tested positive for coliform bacteria. However, confirmation samples tested negative so no additional follow-up actions were needed.
The report noted that “coliform bacteria are an indicator organism that are ubiquitous in nature and are not generally considered harmful. They are used because of the ease in monitoring and analysis.”
The study concluded that the drinking water quality of the district’s main water system meets all state and federal drinking water standards.
Contact Dawn Hodson at 530-344-5071 or firstname.lastname@example.org. Follow @DHodsonMtDemo on Twitter.