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[Water_news] 2. DWR'S CALIFORNIA WATER NEWS: SUPPLY - 9/4/08

Department of Water Resources

California Water News

A daily compilation of significant news articles and comment 

 

September 4, 2008

 

2. Supply –

 

 

 

Coso counting on water from Hay Ranch

The Inyo Register – 9/4/08

By Mike Bodine, staff writer

 

Coso Geothermal Project is closer to a possible ruling on its controversial proposal to pump water near Little Lake in Southern Inyo, about 19 months after initially seeking approval from the county.


Running out of the water it needs to operate, the electrical generating plant isn’t the only entity with a vested interest in the county’s decision.
Little Lake Ranch, LLC and others are worried the pumping project will have a “devastating impact” on the lake and surrounding riparian areas. A public comment period on the groundwater pumping proposal comes to an end Saturday, Sept. 6.

 

The Coso Operating Company, LLC, is seeking a 30-year conditional use permit from the Inyo County Planning Commission to extract groundwater from two existing wells on the Coso Hay Ranch property in Rose Valley at the southern end of Inyo County. The permit is asking to withdraw 3,000 gallons per minute or 4,800 acre-feet per year and construct a nine-mile long pipe from the wells to the plant to supplement a shrinking geothermal reservoir.

 

Coso argues the pumping plan is the only economically feasible way to keep the plant generating at capacity.


The plan calls for mitigation guidelines and “trigger levels,” such as a decrease in the lake level of 10 percent, to prevent any permanent damage.


Opposing the project is Little Lake Ranch, and specifically Gary Arnold, the ranch’s legal counsel, representing Arnold, Bleuel, LaRochelle, Matthews and Zirbel. Arnold is also a member of the 1,200-acre ranch and private hunting club. The property includes Little Lake, a 1.6-mile riparian corridor and five ponds.
Arnold and the ranch are arguing that the proposed pumping will suck Little Lake dry, leaving it to face a very long-term recovery. Arnold noted he is using statistics from the Hydrology Model included in the Draft Environmental Impact Report to argue his claim.


Arnold pointed at statements in the model that Rose Valley Basin, which includes Little Lake, is in a state of equilibrium, meaning any new pumping or water transfer will deplete water in the aquifer. In the DEIR, impacts to the lake are defined as a reduction of 10 percent in water available to the surface. Predictions in the model state that Little Lake will not recover from a 10 percent water loss for more than 120 years after all pumping stops. So, with the reduction limitations, Coso’s request to pump 4,800 acre-feet per year would have to completely stop within 15 months to avoid the 10 percent depletion, according to Arnold.


“Then what are they going to do?” Arnold asked about the future of the project after the water is no longer available.


“Coso’s dilemma is a self-inflicted wound,” Arnold states in a press release. He claims Coso knew of the “risks of the geothermal reservoir” and entered into contracts before it knew how much the plant could produce.


“I think the county supervisors needs to educate themselves on their own geothermal ordinances and their decision to waive waterexportation laws,” said Wilfred Nabahe, District 5 property taxpayer. One of the intents in Inyo County’s geothermal resource development ordinance, Title 19, is to protect the environment and provide optimum use of the land.


“This is poor planning and poor judgment by the county. What’s going to happen 30, 40 years from now?” Nabahe asked of how Coso expects to operate after the pumping permit, and the water has run out.


Water is the primary ingredient for geothermal power. The way Coso Geothermal Plant works, according to statements by Coso Geothermal, is that hot geothermal fluid, or brines under pressure of natural geothermal reservoir, travels up through wells, some as deep as 11,000 feet, and flashes into steam that turns generator turbines and produces electricity.


As time goes by, loss of brine due to evaporation must be replaced to maintain reservoir pressure. Coso’s original 1980 Environmental Impact Study anticipated this brine loss and contemplated the potential need for up to 6,000 acre-feet of water annually from Rose Valley.  


Chris Ellis, ground coordinator for Coso Geothermal, said that Coso owns the fallowed Hay Ranch and is not pumping from there currently. He said the pumping plan would add to the natural geothermal reservoir that has become depleted from Coso’s 20-year operations.


Ellis added that the plant is currently producing enough electricity to power about 200,000 homes or 200MW but the goal is to generate the full potential of 250MW. Originally intended to be used to power the China Lake Naval Weapons Station, the electricity is now sold to Southern California Edison.


Coso also states in the press release that, “Recent power contract extensions will supply an enhanced tax base for the next 20 years.” Coso has entered into an exclusive power purchase agreement with SCE that will last until 2030.  


Inyo County Planning Director Pat Cecil said the county’s motivation to allow water to be pumped from already dry lands is not just the property tax revenue, but also to comply with S.B. 1078, a 2002 rule that mandated 20 percent of California’s electricity come from renewable resources by 2017.
In November, California voters will decide on Proposition 7, which would raise requirements to 20 percent from renewable sources by 2010, 40 percent by 2020 and 50 percent by 2025.


Coso states that the use permit to pump  is “very important for meeting the state’s renewable energy requirements.”
Property tax revenue from Coso Operating Company jumped from approximately $4.5 million last year to $11.9 million this year according to the Inyo County Treasury Department.


Inyo County Assessor Tom Lanshaw said the geothermal plant was purchased by ArcLight Capitol to be managed by Terra-Gen in December, 2007. The plant was reappraised at $1.2 billion, up from the previous assessment of $420 million. Lanshaw explained the selling price and newly appraised value were so high because the sellers, Caithness Corporation, included the extra water from Hay Ranch in the assessment.


Lanshaw said ArcLight and Inyo County are currently in negotiations over the assessment given the new uncertainty of the Hay Ranch pumping project.
Pumping from Hay Ranch is not the only way to keep Coso operating at capacity, but the only one getting any attention.


Alternatives to the new pumping project, as stated in the DEIR, “but rejected during development of the project included: increase power through power plant enhancements; alternative sources of injection water; and, reducing the time frame of the permit.” All of these alternatives were rejected on grounds as being more expensive or not in line with Coso Operating goals, to operate at full capacity.


Proposed alternatives to the pumping project included: no project; pumping Hay Ranch at the maximum allowable rate for 30 years without surpassing “trigger levels,” the 10-percent loss; or pump Hay Ranch at various levels preventing significant impact on Little Lake.


The “no project” alternative would avoid groundwater impacts, but, according to the DEIR, the early decommissioning of Coso Geothermal Plant could “affect electricity supply in the region and the associated environmental effects of generating new electricity to compensate for the electricity lost from the Coso projects would be greater than those of the proposed (Hay Ranch pumping) project.”


“As a member of the public, I’m concerned with the substantial loss to the lake,” Arnold said. According to Arnold, he doesn’t want to sue, if possible, but he wants “the county to seriously look at the alternatives to pumping water.”


Cecil explained that after the public comment period has closed, those comments will be incorporated into the DEIR and then sent to the county Water Commission for its scrutiny and on to the Planning Commission for certification then to the county supervisors for their vote. Public notices for dates, times and locations of these meetings will be published as meetings are scheduled.


A copy of the DEIR is available for review at the Inyo County Planning Department, 168 N. Edwards St., Independence, at all Inyo County public libraries or online at www.inyoplanning.org/projects.htm (click on the “Coso Geothermal” link).


The public is encouraged to comment or ask questions about the DEIR by writing to the Inyo County Planning Department, P.O. Drawer “L,” Independence, CA 93526, faxing to (760) 878-0382 or e-mailing inyoplanning@inyocounty.us. #

http://www.inyoregister.com/content/view/115394/1/

 

 

Agencies learn about importance of recycled water

Ventura County Star – 9/4/08

·                                  

In drought-prone California, it turns out that one of the most reliable sources of water is the stuff that's already been used.

The importance of recycled water — municipal wastewater treated and then reused for irrigation, landscaping and even to replenish groundwater — has grown as the state struggles with a drought year and limits on new sources for water.

 

On Wednesday, local members of the Association of Water Agencies of Ventura County heard about ways to tap into this source from experts in the field of water reuse.

 

Although some people, as well as some water agencies, are uneasy about the use of recycled water, Steve Bachman, groundwater resources manager for United Water Conservation District, said soon water reuse will be required of all water agencies.

 

"One of the things that's being considered (by the state) is that if you're not using it, it would be considered a waste of water," Bachman said at the workshop in Oxnard.

 

The workshop was the third in a series of four put on by the agency for its "Drought Watch 2008."

 

It included presentations from the chairman of the California Building Industry Association, from a water agency that delivers recycled water for industrial uses, and a consulting firm on the nuts and bolts of implementing a water-recycling program.

 

Steve LaMar, chairman of the California Building Industry Association, said his group believes that it's in the industry's interest to push for more aggressive conservation, adding that he believes water is undervalued.

 

"In the paper yesterday, I saw that in Stockton, they're paying one-tenth of a cent for a gallon of water, and that just doesn't seem right, especially when you consider we're paying $4 for a gallon of gas," LaMar said.

 

Ventura County is not a leader in the use of recycled water, but statewide, there has been a push to increase its use.

 

State officials want California to use 1 million acre-feet of recycled water a year by 2010. One-acre foot equals 325,851 gallons.

 

Gov. Arnold Schwarzenegger is also pushing to require that water agencies reduce water use by 20 percent — through efficiency or reuse — by 2020.

Unlike places such as Orange County, which recently began using treated sewage to augment drinking water supplies, or Los Angeles County, where recycled water is commonly used for irrigation, water reuse is still in its infancy in Ventura County.

 

The Camrosa Water District, which has about 30,000 customers in Camarillo and the Santa Rosa Valley, recently began reusing water for irrigation at CSU Channel Islands, on farm fields and to water the golf course at Leisure Village.

 

The city of Oxnard is also embarking on a water-recycling program. Estimated to cost about $100 million, the program daily will produce about 6 million gallons of recycled water that will be used to replenish groundwater, halt seawater intrusion and irrigate farm fields.#

http://www.venturacountystar.com/news/2008/sep/04/agencies-learn-about-importance-of-recycled/

 

 

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