Photo of Santa Rosa Creek, a lagoon that meets the ocean at Moonstone Beach.
Cambria Community Services District (CCSD) has been working on bringing a desalination plant to its coast since 1996. Cambria relies on one narrow aquifers for its local water supply and presented to their board the need for a desal plant to meet water demand in their future. The San Simeon aquifer is south of the city and is now the only source of drinking water after the city had to close the Santa Rosa Creek aquifer due to MTBE contamination from years of gasoline leakages from Chevron Corp.
In 1996, the plant was permitted and the following year, designs were created after an open bidding process. The plans were deemed inadequate by its board, and the process did not begin again until 2003 when permits were submitted again. An EIR was drafted and can be found here. In 2007, CCSD signed an agreement with the Army Corps of Engineers to begin seeking funding for the project. Their PPA was approved for $3.5 million as a credit language to be matched by CCSD. But this same year. California Coastal Commission denied the intake location at San Simeon state beach. After trying again for San Simeon, in 2008 they moved the project to Santa Rosa Creek. In January of this year, the CCC Environmental Scientist, Tom Luster, has issued a letter to the Army Corps warning of the well-testing proposal and demanding more work into its impacts. This comes from published documentation on file with the CCSD that reports mercury contamination from local inactive mines that produced runoff into the Curti Creek, which feeds into Santa Rosa Creek and possibly into the ocean.
As of May 2010, the CCC says that approval will be given to the Army Corps if two conditions are met in order to comply with the California Coastal Management Program. Installation and removal of wells on the beach near Shamel Park should be done during September and October to minimize impacts on birds, fish and other wildlife and subsurface water should be tested for more than 100 contaminants, including mercury, before its allowed to be discharged. Shamel Park beach is between the estuarine waters of the Santa Rosa Creek Natural Preserve and the Cambria State Marine Conservation Area. The Army Corps maintains that this area contains permeable gravel and sand deposits that may be suitable for intake wells that can pull subsurface seawater without disturbing marine life.
UPDATE: LandWatch in San Luis Obispo County has filed a suit to issue an injunction to order CCSD and California Coastal Commission to go through the coastal development permit process instead of allowing construction of wells during the Sept-Oct period with no proof of environmental affects. Read article here.
UPDATE 8/16/10: An August 9th ruling by Judge Martin Tangeman of the Superior Court of San Luis Obispo County found that public agencies, such as CCSD, are allowed to file EIR documents when they want to consider broad policy alternatives, such as desal in this case, and not just for steps towards desal.
UPDATE 9/27/10: On September 23 & 24, the Army Corps of Engineers began drilling of two holes in the beach near Shamel Park. They have until October 21 to complete the testing, per CCC ruling related to the protection of the bird habitat nearby. The test wells will be left in place, buried under several feet of sand, so more water can be drawn out for subsequent testing if such should legally take place.
To read a full background on the Cambria desal project, please check out this article by Lynne Harkins here.