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1 <br /> 1 <br /> ' QUALITY CONTROL <br /> INFORMATION CONTROL INDEX <br /> BTEX/TOTAL PETROLEUM HYDROCARBONS PURGEABLE------------METHOD BLANK <br /> tBTEX ---------------------------------------------------LQCS-MBS/MBSD <br /> ' TOTAL PETROLEUM HYDROCARBONS PURGEABLE----------------LQCS-MBS/MBSD <br /> 1 <br /> 1 <br />