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Simeon Associates _ <br /> 1433 North Market Boulevard . Sacramento, California 95834- 1943 M611928-3300 . Fax (916) 928-3341 <br /> 54 OCT 21 PH 1 : 32 <br /> October 18, 1994 <br /> Project 0805- 117 .01 <br /> Ms. Mary Meays <br /> San Joaquin County Public Health Department <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> Re : ARCO Service Station No. 548 <br /> 1612 Hammer Lane, Stockton, California <br /> Dear Ms. Meays : <br /> Per our telephone conversation on October 12, 1994, you mentioned that a representative <br /> from your department conducted a site inspection to verify the condition of the <br /> monitoring wells at ARCO Station No. 548 located at 1612 Hammer Lane. Copies of the <br /> actual field notes could not be obtained because the person that conducted the survey had <br /> requested the file to be confidential. It is our understanding that some concerns regarding <br /> the conditions of some of monitoring wells were outlined in the site inspection field notes. <br /> These concerns as communicated in our conversation are described below as well as <br /> necessary repairs that EMCON will perform. <br /> 1 ) Monitoring wells MW- 1 through MW-4 are below surface grade (due to <br /> reasphalting the site) and run-off water was accumulating over the wells . You <br /> requested that the wells be reconstructed so that the wells are slightly above <br /> i <br /> surface grade. EMCON will repair well heads , <br /> i <br /> i 2) The sa a^y sem' :: wc'..s 1's; '-2aiiu ia_ a „insrrr - 'J a _ - -r_ <br /> ua+ ., Scti=ii below the skirt of <br /> the Christy box and apparently staining was observed on the outer surface of <br /> the PVC casing. When the well heads are replaced, EMCON will bring the <br /> sanitary seal up inside the skirt of the Christy box. <br /> c <br /> 3) The Christy box for monitoring well MW-4 was broken and needs to be <br /> replaced. As stated under item 1 , the Christy box will be replaced. <br /> 1 <br /> Wells MW-5 and MW-6 are in good condition. You expressed that you would like <br /> i response addressing these issues by the third week of October 1994. ARCO has <br /> authorized EMCON to perform repairs at ARCO Station 548 located at 1612 Hammer <br /> Lane, Stockton California. EMCON has tentatively scheduled field work to commence <br /> October 31 , 1994. <br /> i�z=s <br />