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CHEVRON RESEARCH AND TECHNOLOGY COMPANY <br /> ANALYTICAL SCIENCES UNIT <br /> PROTECT SUMMARY <br /> Project No. 1995 0233 <br /> Date Initiated 11/09/95 Requested by B L Hunter <br /> Date Completed 11/27/95 Location CUSA Products Co <br /> CRTC Charge Code M0140 P O. Box 5004 <br /> San Ramon, CA 94583 <br /> Phone CTN-842-8695 <br /> Project Description: Identify hydrocarbon found floating on groundwater after removal of service station fuel <br /> supply tank Sample is labeled THZO and was found at Chevron service station #9-8264, 3775 Tracy Blvd , Tracy, <br /> CA <br /> Results: The hydrocarbon in sample THIO is highly evaporated gasoline, presently consisting of C8 to C„ <br /> compounds The sample is approximately 80% evaporated and contains 0 14 g/gal tetraalkyl lead Correcting for <br /> evaporation, the tetraalkyl lead level in a fresh gasoline would be 0 028 g/gal This lead level is too low for a <br /> manufactured product and suggests that the gasoline in the sample has picked up lead from the soil <br /> Analjlical A roach: The sample was analyzed by gas chromatography using a flame ionization detector to <br /> determine the hydrocarbon composition and an electron capture detector to measure the lead alkyl isomer distribution <br /> Analyzed by N Berkowitz <br /> Reported by J Kimberlin <br /> Reviewed by E A Harvey C&-kl" <br /> Bl-Hunter - 1 <br /> DCYoung - 1 <br /> AWVerstuyft - 1 <br /> EAHarvey - 1 <br /> NBerkowltz - 1 <br /> Minberlin - 1 <br /> ACFTfile <br /> Tech Files 300 6110 <br /> -�1„ 7� t� r0.- Q�O•"�nTfS < C� N{ rr •-• �r <br /> L r r-")tl <br />