Laserfiche WebLink
w+� <br /> rh <br /> f <br /> December 12, 1990 <br /> Subsurface Investigation AGS 38012-5 <br /> Former Unocal Station No. 2859, Stockton, California <br /> RECOMMENDATIONS <br /> Based on the above conclusions, Applied GeoSystems makes the <br /> following recommendations: and <br /> water <br /> well <br /> a Drill one soil boring <br /> sou property boundary to delineate <br /> he extent of dissolved <br /> (MW-5) along theP <br /> hydrocarbons in ground water to the south and to the west of the source. <br /> o Evaluate the additional data and complete the Problem Asse ,went Report. <br /> o Obtain and review well logs of local water supply wells to evaluate the aquifer <br /> thickness and local geology. I' I <br /> o Evaluate aquifer parameters using wells Q �� -4� MW-4 and MW-5. <br /> well <br /> the center of the dissolved hydrocarbon <br /> r.t <br /> o Install a pumping e terncOump island). Ifour evaluation of aquifer parameters <br /> plume (near theP <br /> necessary for a pump test,wells will be installed <br /> indicates additional wells will be <br /> with the approval of the SJPHS. <br /> o Conduct a pumping test to evaluate the hydraulic characteristics of the water table <br /> aquifer. <br /> I_IMITATIONS <br /> This report was prepared in accordance with generally accepted standards of environmental <br /> in California at the time this investigation was performed. This investigation <br /> geological practice <br /> ose of evaluating environmental conditions of the soil and <br /> was conducted solely for the purF geotechnical references are <br /> ground water with respect to hydrocarbons. No soil engineering or <br /> implied or should be infe.red. Evaluation of the geologic conditions at the site for.the purpose <br /> Of this investigation is made from a limited number of observation points. Subsurface conditions <br /> 22 <br /> " S�eIYIS - <br /> ,4ppred GO&SY _ v� <br />