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Manteca Unified School DistrictO <br /> Soil& Groundwater Investigation Report <br /> ' Page $ <br /> depth of 18 feet, below the water table Diesel contaminated groundwater (0 389 mg/l) <br /> was detected in the exploratory boring constructed through the tank pit The groundwater <br /> ' sample was collected through a temporary casing installed in the boring The very low <br /> concentrations of diesel hydrocarbons are probably soil contamination carried into the <br /> ' aquifer through the drilling process <br /> The extremely low concentrations of detected volatile aromatic hydrocarbons, absence of <br /> ' diesel range hydrocarbons except in the former tank cavity, and absence of contaminates <br /> in the onsite domestic well do not warrant additional corrective action The Regional <br /> Water Quality Control Board Site Closure Checklist has been completed as Appendix D <br /> ' to this report It is our recommendation that the San Joaquin County Environmental <br /> Health Department approve a finding of No Further Action for the site <br /> ' The above represents our best professional opinion as to environmental conditions at this <br /> site These opinions were derived using data at hand, and standards of care common to <br /> the environmental consulting community in Northern California There is the possibility <br /> that even with proper application of the above methodologies, there may exist on the <br /> subject property conditions that could not be identified within the scope of this sampling <br /> work or which were not reasonably identifiable from the available information <br /> ' The methodologies included in this report are not intended to produce all inclusive or <br /> comprehensive results, but rather to provide the client with information regarding <br /> l <br /> apparent suspicions of existing and potential adverse environmental conditions relating to <br /> ie the subject property Additional work at this site may generate data that could lead to a <br /> change of opinion regarding conditions or appropriate remedial procedures or both <br /> 1 <br /> a Geo <br /> �ERT1 <br /> Prepared by Q ROBERF FOURT 6 <br /> xo <br /> Ep --i <br /> O p <br /> GEO <br /> L/ <br /> FQF�AL`FO <br /> ' Robert Fourt, CEG, CHG <br /> California Engineering Geologist #001731 <br /> ' California Certified Hydrogeologist#HG180 <br /> //t(VIL <br /> �' Fawiam <br /> Michael J Kloberdanz, REA, REHS <br /> California Registered Environmental Assessor#02157 <br /> California Registered Environmental Health Specialist #4783 no ianw <br /> �r <br /> Eames G":io9z- <br /> 1 � - <br /> 0 CA1,00 � <br /> 1 <br />