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01 <br /> Mr Martin Harris <br /> March 22, 2000 <br /> Page 5 of 5 <br /> approximately 12-13 feet bgs <br /> • The lateral extent of soil contamination associated with the former UST has not been completely <br /> defined, although it was detected at very low concentrations in borings located approximately <br /> 20 feet north and 15 feet southwest of the former UST <br /> • Groundwater beneath the site has been impacted by a release of gasoline from the former UST <br /> • The lateral extent of groundwater contamination beneath the site has not been defined <br /> 6.0 RECOMMENDATIONS <br /> Ground Zero recommends the installation of four shallow groundwater monitoring wells and <br /> additional soil borings, as needed, to delineate the Iateral extent of petroleum hydrocarbon <br /> contamination in the shallow soil and groundwater beneath the site <br /> 7.0 CERTIFICATION <br /> Signature of this report certifies that Ground Zero's professional services have been performed, our <br /> findings obtained, and our conclusions prepared in accordance with customary principles and <br /> practices in the fields of environmental science and engineering No hazardous wastes were <br /> generated as a result of these investigations The analytical laboratory will ultimately dispose of <br /> collected soil and groundwater samples <br />. This investigation was performed under the direct supervision of John Lane, CA Registered <br /> Geologist 6795, who has reviewed and approved this report The methods and procedures <br /> employed in the development of this report conform to nunimum industry standards <br /> Please contact Ground Zero at (209) 838-9888 if you have any questions or comments regarding <br /> this submittal <br /> Respectfully, <br /> Ground Zero Analysis, Inc <br /> r. <br /> Aanvey `�,t�RED G�c�`O <br /> Staff Geologists JOHN P <br /> LANE <br /> No 6795 <br /> NA Q <br /> John P Lane, <br /> CA Registered Geologist No 6795 4F C <br /> Attachments <br /> datalgoundae\tuAboyvep orts\subs urs um.doc <br />