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Kyle Christie <br /> Page 3 <br /> 225 S. Cherokee Dane, Lodi ARCO Facility #760 <br /> PHS/EHD contact - Linda Turkatte <br /> The soil borings/vapor wells proposed for the alley way to the <br /> north and northeast of the site were installed on June 7, <br /> 1995 . <br /> The remediation system is scheduled to be installed at the <br /> site sometime next year. This site was chosen for remedial <br /> implementation before the ARCO station 4548 due to the <br /> evaluation of the comparative assessment between these two <br /> sites . <br /> The need for an additional monitoring well to the northeast of <br /> the site was discussed. Given the low levels of groundwater <br /> contamination evidenced at the site and the infrequency of <br /> measured groundwater flow in that direction, the need for an <br /> additional monitoring well will be reassessed when more data <br /> from the site is available . <br /> 85 E. Louise Avenue, Lathrop ARCO Facility #6080 <br /> PHS/EHD contact - Linda Turkatte <br /> This site has never had confirmed groundwater contamination. <br /> The three monitoring wells at the site have historically shown <br /> nondetectable concentrations of contaminants . Due to the low <br /> concentrations of unidentifiable "miscellaneous" hydrocarbons <br /> found in the soil near the former waste oil tank pit area, <br /> PHS/EHD has concluded that the potential threat to groundwater <br /> does not warrant the additional cost of further investigation <br /> with regard to the waste oil tank release . <br /> PHS/EHD will issue a formal site certification letter after <br /> the destruction of the three monitoring wells at the site. <br /> PHS/EHD staff has the following comments on events that have <br /> occurred since the May 16, 1995, meeting: <br /> 1 . At a site where groundwater sampling was occurring it <br /> came to our attention that insufficient time is allowed <br /> to elapse between the evacuation of groundwater from <br /> monitoring wells where purging has caused the water level <br /> to be less than 80 per cent of the original water level, <br /> and their subsequent sampling. PHS/EHD has prepared the <br /> enclosed "Recommended Groundwater Sampling Guidelines" to <br /> ensure that groundwater purging and sampling be <br /> consistent . <br /> 2 . A "Notice to Abate" was mailed to Boston Market and the <br /> permit for the destruction of monitoring well 6 for 501 <br /> W. Kettleman, Lodi, has been issued but the well still <br /> has not been located. Please provide PHS/EHD with all <br />