Projects Currently Underway
Sterling Pipeline
Phase IIA of the Sterling Pipeline started June 30. The District crews have installed approximately 2,800 feet but had to stop due to unforeseen circumstances. The problems have now been corrected and the job was restarted in January. The remainder of the pipeline should be completed by late March 2009. Phase IIA consists of approximately 4,000 lineal feet of 20” diameter ductile iron pipe. Phase IIA started at the intersection of Sterling Avenue and Date Street, and will go west on Date Street to Plant 107. This project will allow the District to move water more efficiently from the higher producing portions of the Bunker Hill aquifer to the rest of the water distribution system. The cost to complete this project is approximately $1,800,000.
Northfork Canal Improvements
EJ Meyer Construction has begun construction of the Northfork Canal Phase II. This project consists of replacing 5,000 feet of existing rock and rubble ditch with 36” ductile iron pipe. The District received FEMA assistance to pay to replace portions of the ditch that have been in place since the early 1900s. Although the current ditch still conveys water to this day, it is fragile and can be easily damaged by fire, floods and traffic. By replacing the ditch with the sturdier ductile iron pipe, it will be able to withstand the elements. This project will be completed this spring. EJ Meyer Construction was the low bidder for this project at $1,454,444.
Well 40 Improvements
Both uranium and high nitrate levels have been found in EVWD Well 40. In order to deliver water meeting the required regulations, the well is being retrofitted with treatment facilities. A double ion exchange system will be constructed similar to those at Well 27 and Well 107. The ion exchange units and the electrical panel have been installed. Project completion is expected in the early spring. At full capacity, Well 40 will produce 1,500 gallons of water per minute. The cost to complete this project is approximately $2,500,000.
Projects in Planning
Plant 150 Improvements
Plant 150 is currently in the design phase and is expected to be completed in 2011. Plant 150 consists of a centralized treatment facility and will treat well water from nearby Wells 11, 12, and 28. Plant 150 will allow the District flexibility in meeting current as well as future regulations. The current contaminants of concern are perchlorate, nitrates and perchloroethylene (PCE). Plant 150 will also have a well and boosters and tow reservoirs to transfer water to higher zones and two reservoirs. Ultimate production from this site is expected to be 17,000 gallons of water per minute. This facility will meet the new October 2008 required regulations on perchlorate maximum contaminate level (MCL) established by the California Department of Public Health. There is no grace period for compliance of the new MCL; therefore the effective date for regulatory compliance was effective immediately on the lion. There are several wells in the districts service area that are close to the MCL and exceed it. The engineers estimate for this project $19,606,000.
Plant 134 Improvements
Plant 134 improvements are currently in the final design phase and are expected to be completed by 2010. The new improvements will convert the existing facility into a membrane filtration Plant and will allow the District to increase capacity from 4 million gallons a day (MGD) to 8 MGD. The District has recently bid out the membrane equipment contract to four different membrane manufacturers. Once a manufacturer is selected, the District can begin the final design for the facility. The reason for the improvements to the plant is to meet the newly promulgated Stage 2 Disinfectants and Disinfectants By-products Rule established by the EPA. The rule establishes a maximum contaminate level (MCL) for various byproducts and minimum treatment requirements for regulatory compliance. The effective date for treatment facilities to be compliant is July 2012. Disinfectant byproducts are primarily formed when a disinfectant such as chlorine reacts with naturally occurring Plant 134 improvements are currently in the final design phase and are expected to be completed by 2010. The new improvements will convert the existing facility into a membrane filtration Plant and will allow the District to increase capacity from 4 million gallons a day (MGD) to 8 MGD. The District has recently bid out the membrane equipment contract to four different membrane manufacturers. Once a manufacturer is selected, the District can begin the final design for the facility. The reason for the improvements to the plant is to meet the newly promulgated Stage 2 Disinfectants and Disinfectants By-products Rule established by the EPA. The rule establishes a maximum contaminate level (MCL) for various byproducts and minimum treatment requirements for regulatory compliance. The effective date for treatment facilities to be compliant is July 2012. Disinfectant byproducts are primarily formed when a disinfectant such as chlorine reacts with naturally occurring organic material in source waters. The engineers estimate for this project is $16,870,000.