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EMC0ft <br /> 1433 North Market Boulevard•Sacramento CA 95834-1943•(916)928-3300•Fax(916)928-3341 <br /> February 19, 1998 <br /> Project 20845-114 08 <br /> W. Paul Supple <br /> ARCO Products Company <br /> P O Box 6549 <br /> Moraga, California 94570 <br /> Re Fourth Quarter 1997 Status Report for ARCO Service Station No 2130, Located at <br /> 7906 North El Dorado Street, Stockton, California <br /> Dear Mr Supple: <br /> The attached report presents the results of the fourth quarter 1997 groundwater motutorirng and <br /> sampling program at ARCO Products Company (ARCO) Service Station No 2130, located at <br /> 7906 North El Dorado Street, Stockton, California In addition, operation and performance <br /> details of the remediation system are presented The quarterly monitoring program is in <br /> compliance with the San Joaquin County Public Health Services requirements regarding <br /> underground storage tank Investigations The performance of the remediation system is in <br /> compliance with the San Joaquin Valley Unified Au Pollution Control District (SJVUAPCD) <br /> permit requirements <br /> LIMITATIONS <br /> No monitoring event is thorough enough to describe all geologic and hydrogeologic conditions of <br /> interest at a given site If conditions have not been identified during the monitoring event, such a <br /> finding should not, therefore, be construed as a guarantee of the absence of such conditions at the <br /> site, but rather as the result of the scope, limitations, and cost of work performed during the <br /> monitoring event- <br /> Please call if you have questions <br /> Sincerely, <br /> EMCON <br /> t&e � LA�,��� <br /> Matt Turner Jay R Johnson, R G 5867 <br /> Project Manager Senior Project Supervisor <br /> Attachment- Fourth Quarter 1997 Status Report <br /> SAC1N\PJU805�M 1140 8DS-97\cboU I <br />