Laserfiche WebLink
3 ' <br /> Department of Toxic Substances Control <br /> CO3V F. Lowry, Director <br /> l� I . Edwin10151 Croydon Way, Suite 3 � <br /> Winston H. Hickox Sacramento, California 95827-2106 <br /> Agency Secretary FEB - 9 ���� Gray Davis <br /> California Environmental Governor <br /> Protection Agency ENVIRON1�U\1T IiEALTH DECEIVED <br /> PERMIT/SERVICES Chevron r_nv;rnnmental Mgmt.Co. <br /> April 27, 2000 MAY 0 12000 <br /> K. L. H. <br /> Ms. Katie Hower <br /> Chevron Environmental Management Company <br /> 6001 Bollinger Canyon Road <br /> San Ramon, California 94583 <br /> REVIEW OF "SOIL AND GROUNDWATER INVESTIGATION AND SCREENING <br /> HEALTH RISK ASSESSMENT OF TFIF, OLP VALLEY PIPELINE RIGHT-OF- WAY" <br /> 5 W <br /> POMBO PROPERTY 75 ./ 5 <br /> Dear Ms. Hower: i <br /> The Department of Toxic Substances Control (DTSC) has completed its review of the <br /> subject report for the pipeline right-of-way, Pombo property, prepared by Geomatrix <br /> Consultants and submitted by Chevron. The former pipeline transported heavy <br /> petroleum (crude and fuel oil) from Bakersfield to .Richmond, California, from the early <br /> 1900s to the 1950s. This report documents the hazardous substance characterization <br /> of soil and groundwater at the site. The purpose of the characterization was to gather <br /> data to assess the lateral and vertical extent of petroleum hydrocarbon-affected soil <br /> along the pipeline right-of-way, to evaluate groundwater quality, and to evaluate <br /> potential human health risks posed by residual petroleum hydrocarbons. The Site is <br /> proposed for a change of land use for unrestricted use. <br /> The subject report was reviewed•by Mr. David L. Berry, Ph.D., DTSC Staff Toxicol <br /> (see internal memorandum dated March 14, 2000). DTSC concurs that the analytical t <br /> data supporting this investigation appear adequate in both quantity and quality. The <br /> residual levels of petroleum-related hydrocarbons in the soils at the site are below <br /> levels that would constitute an unacceptable risk to human health and the <br /> environment. As with any real property, if previously unidentified contamination is <br /> discovered at the Site, additional assessment, investigation, and/or remediation may <br /> be required. <br /> i <br /> i <br /> , � Rgirrtt�tlarn {��- , <br />