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r . <br /> Chevron <br /> Chevron <br /> January 13, 2000 �' 34 Chevron Environmental Management <br /> Company <br /> 6001 Ballinger Canyon Road <br /> P.0.Box 6012 <br /> San Ramon,CA 94583.0712 <br /> Mr. James L. Tjosvold, P.E., Chief <br /> Northern California—Central Cleanup Operations Branch Katie L.Hower <br /> Pipeline Project Manager � <br /> 10151 Croydon Way, suite 3 (925)842-1341 <br /> Sacramento, CA 95827-2106 <br /> Geomatrix Consultants, Inc.'s Revised Soil and Groundwater <br /> Investigation and Screening Health Risk Assessment <br /> of the Old Valley Pipeline Right-of-Way Report <br /> Mansfield Property (APN 209-270-30) <br /> Tracy, California <br /> Dear Mr. Tjosvold: <br /> Thank you for your November 18, 1999 letter to Chevron Environmental <br /> i <br /> (CEMC)transmitting the California Department of Toxic Substans Control's (DTSCCreview <br /> comments on Geomatrix Consultants, Inc.'s September 1999 Soil and Groundwater investigation <br /> view <br /> and Screening Health Risk Assessment of the Old Valley Pipeline Right-of-Way, Mans zeld g on <br /> Property ) y f � <br /> 1� ty (APN-209-270-30 Tracy, California. Enclosed please find the subject report forour. <br /> files, which incorporates the edits and suggestions in the November 18, 1999 letter. y <br /> It has been a pleasure working with your office. If you have any questions or require addit' <br /> information,please call me at (925)842-1341. q conal <br /> Sincerely, <br /> i <br /> K. L. Hower <br /> Pipeline Project Manager <br /> cc: Mr. and Mrs. Richard Mansfield <br /> Ms. Donna Heran— San Joaquin County Public Health Services <br /> r; Michael Infurna,.Jr: San Joaquin County-Public-Health Services, <br /> _. <br /> Ms. Mary Misemer—California Department of Toxic Substances Control <br /> Ms. Megan Cambridge—California Department of Toxic Substances Control <br /> Mr. David Be P � <br /> Berry—California Department of Toxic Substances Control <br /> Mr. Philip Isorena—California Regional Water Quality Control Board <br /> Mr. Robert Conant—City of Tracy Community Development Department <br /> Mr. Patrick Riddle—Law Offices of Patrick D. Riddle <br />