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i 4 S <br /> t KAPREALIAN ENGINEERING <br /> 1 N C 0 R P 0 R A T E D <br /> KEI-J92-0205 .R4 <br /> July 6, 1994 <br /> Unocal Corporation <br /> 2000 Crow Canyon Place, Suite 400 <br /> P .O. Box 5155 <br /> San Ramon, California 94583 <br /> Attention: Mr. Robert A. BOUSt <br /> RE: Case Closure Report <br /> Former Unocal Bulk Plant #0950 <br /> 2835 Navy Drive <br /> Stockton California <br /> Dear Mr. Boust: <br /> INTRODUCTION <br /> This report presents a comprehensive summary of all of the soil <br /> sampling, ground water monitoring and sampling, and soil remedia- <br /> tion activities that were conducted by Kaprealian Engineering, <br /> Inc <br /> (KEI) at the referenced site from April 1992 through May 1993 . <br /> This report also presents a brief and partial summary of some of <br /> the site assessment work conducted by other consultants prior to <br /> KEI ' s involvement at this former Unocal facility. This report was <br /> prepared in accordance with Tri-Regional Board Staff Recommenda- <br /> tions for Preliminary Investigation and dEv� B <br /> Evaluation of Underground <br /> Tank Sites -- Request for Closure (App ) guidance document <br /> The Central Valley Regional Water Quality Control Board' s (RWQCB) <br /> "Case Closure Checklist" has also been completed and is attached to <br /> this report. Based on the analytical results of all of the soil <br /> and ground water samples collected and evaluated to date, it is <br /> opinion that no further ground n <br /> d sampling <br /> Is warranted he Unocal site, unless required by regulatory <br /> agencies. <br /> SITE DESCRIPTION AND BACKGROUND <br /> The sub3ect site was formerly used as a bulk petroleum product <br /> marketing station_ The Unocal site is located at the Port Cal of <br /> Stockton, on the southwest side of the City of Stockton, <br /> nia. The site is bordered by Stork Road on the east and Navy Drive <br /> on the west (Figure 1) , and is situated approximately 1, 200 feet <br /> east of the San Joaquin River and 4 , 000 feet south of the Stockton <br /> Deep Water Channel. The area surrounding the site is heavily <br /> industrialized anincludes <br /> Locataonmunicipal <br /> assewage <br /> attachedtreatment <br /> thisplant <br /> repartand <br /> sewage disposalponds <br /> 2401 swwell Drive Suite 400 <br /> Concord California 94520 <br /> Tel 510 602 5100 Fax 510 68-0602 <br />