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process that is managed in accordance with applicable regulations administered by <br /> the California regional water quality control board,is used beneficially in a manner <br /> that results in lowering the pH below 12.5 but above 2.0,is not accumulated <br /> speculatively,and is available for commercial use. <br /> (g)For purposes of this section,the following definitions shall apply: <br /> (1)"Biomass combustion process"means a combustion process that has a <br /> primary energy source of biomass or biomass waste,and of which 75 percent of <br /> the total energy input is from those sources during any calendar year,and of which <br /> 25 percent or less of the other energy sources do not include sewage sludge, <br /> industrial sludge,medical waste,hazardous waste,radioactive waste,or municipal <br /> solid waste. <br /> (2)"Biomass"or"biomass waste"means any organic material not derived <br /> from fossil fuels,such as agricultural crop residues,bark,lawn,yard and garden <br /> clippings,leaves,silvicultural residue,tree and brush pruning,wood and wood <br /> chips,and wood waste,including these materials when separated from other waste <br /> streams."Biomass"or"biomass waste"does not include material containing <br /> sewage sludge,industrial sludge,medical waste,hazardous waste,or radioactive <br /> waste.(Amended by Stats. 1996,Ch.962,Sec.2.Effective January 1,1997.) <br /> 25143.6.(a)Spent brine solutions that are byproducts from the treatment of <br /> groundwater to meet California drinking water standards are exempt from the <br /> requirements of this chapter if all of the following conditions are met: <br /> (1)The treatment of these spent brine solutions by dewatering via a closed <br /> piping system to lined surface impoundments is specifically approved by the <br /> applicable regional water quality control board. <br /> (2)The spent brine solutions are transferred for dewaterin <br /> 2 <br />