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California
Statistics
Year Fracing Began:
1970(s)
Types of Wells Fraced:
Natural Gas
Types of Wells Fraced:
Oil
Number of Wells Fraced Annually:
500
Number of Wells Fraced Total:
15,000
Percentage of Wells Fraced:
15%
Harm to Groundwater:
None
California Department of Conservation, Division of Oil & Gas
(updated 9/4/2009)
Statistics are estimates provided by the states.