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a <br /> AEGIS ENVIRONMENTAL , INC <br /> 1050 Melody Lane,Suite 160, Roseville, CA 95678 + 916.782-2110 1916-969-2110 1 FAX 916.786-7830 <br /> April 9, 1993 <br /> Mr Dan Kirk <br /> Shell Oil Company <br /> Post Office Box 5278 <br /> Concord, California 94520 <br /> Subject Quarterly Groundwater Monitoring Report <br /> Shell Service Station (WIC No 204-7524-0808) <br /> 7910 Lower Sacramento Road, Stockton, California <br /> Dear Mr Kirk <br /> Aegis Environmental, Inc (Aegis), is pleased to provide Shell Oil Company the attached <br /> information documenting the results of quarterly groundwater monitoring at the subject <br /> site (Figures 1 and 2), conducted on February 19, 1993, by Blame Tech Services, Inc , <br /> of San Jose, California <br /> Gasoline constituents, have not been indicated at or above the method detection or <br /> practical quantitation limits in any of the three wells since the June 12, 1992 sampling <br /> event It is the opinion of Aegis and Shell that shallow groundwater does not contain <br /> petroleum hydrocarbons By copy of this report, Aegis requests the permission of the <br /> San Joaquin County Environmental Health Division to perform monitoring and sampling <br /> of the three wells on an annual basis On this schedule, the next monitoring and <br /> sampling will occur in February 1994 <br /> The interpretations and conclusions contained within the attachments represent our <br /> professional opinions These opinions are based on currently available information and <br /> were developed in accordance with currently accepted geologic, hydrogeologic, and <br /> engineering practices at this time and for this specific site Other than this, no warranty <br /> is implied or intended <br /> 91 234E QMR <br /> GEOLOGISTS • ENGINEERS • GROUNDWATER SCIENTISTS <br />