Laserfiche WebLink
- - - - <br /> r <br /> Results of Initial Investigation and Work Plan December 18, 1990 <br /> ARCO Service Station No.548, Stockton, California AGS 30004-2 <br /> FIEM PROCEDURES <br /> Safety Plan <br /> The Site Safety Plan(Appendix D) describes the basic safety requirements for the drilling <br /> of soil borings at the work site. The safety plan is applicable to personnel of Applied <br /> a GeoSystems and to subcontractors of Applied GeoSystems. The Applied GeoSystems <br /> geologist will act as the Site Safety Officer. Personnel at the site will be informed of the <br /> contents of the site safety plan before work begins. A copy of the plan will be kept at the <br /> work site and will be available for reference by appropriate parties during the work. <br /> A <br /> Excavation of Existing Tank Cavity <br /> A geologist from Applied GeoSystems will be onsite to observe exca�iation of tite soil from <br /> bothtank cavities. Immediately following the removal of the four exist ing`underground= <br /> `storage tanks,.the tank cavity will.be excavated to a,depth between 2 and 4 feet below the <br /> {, former tanks to evaluate if hydrocarbons"remain in place. Du <br /> rin$excavation,the geologist, <br /> will use a'PID to characterize the relative levels-of hydrocarbons in the soil and note'any <br /> -�dbjective evidence:of hydrocarbons such as obvious product odor and discoloration. Field <br /> instruments such as the PiD are useful for indicating relative levels of hydrocarbon vapors, <br /> but do not detect the concentration of hydrocarbons present with the same precision as <br /> laboratory analyses. <br /> 0 <br /> We will collect two soil sample's within'2 to.4 feet below the base of.each forrher.tank. If <br /> PIDreadings are less than 50 ppmv,`_we will._submif_the-soil:samples_to_theJaboratory-.for.. <br /> analyses :If PID"readings'are.greater than 50 ppmv we will observe additional excavation <br /> in the gasoline-tank cavity until PID readings are less than 50p0mv and submit these"sail. <br /> AppAied 4700Sj`Wems <br />