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*' 170- <br /> { '�µy ,;i"_i°ajra"�."dlS" .«� 'r. _ i:N' .3w'✓ _ _ !" <br /> SITE CONTAMINATION wORKPLAN <br /> Babka Distributing CO- <br /> 1149 W. Weber Ave. <br /> SITE DESCRIPTION <br /> t of <br /> The site is located in a flat industrial areain <br /> Stockton r West <br /> stockton (Figure I - Location Map, <br /> USGS Topographic Map Series, 197b) . There is a urron <br /> Quadrangle, parking area, and a rail spur <br /> war house, a large asp that p g that operated <br /> pr,.)perty. The property was a beer distributorship <br /> u►,.til 1989. <br /> e site <br /> n 1972 <br /> Two underground fuel to xs our understandingre installed at hthat the1 10,000 <br /> (Figure 2 - Site plan) . gasoline. The 3,000 gal3.on tank <br /> gallon tank contained leaded g trucks. <br /> contained diesel. The tanks were used to fuel the delivery <br /> BI'S'E GEOLOGY <br /> The sOstlY <br /> ite is underlain by ur�consoliaate'1 Quaternary <br /> uaor anic clay and ndmpeat. <br /> silt and clay but including some sand, get available for the <br /> Deta.il.ed lithologic descriptions are not y <br /> site, but some inferences can be drawn site ath1320eW. Weber. <br /> subsurface investigations on the neighboring <br /> The following discussion is based on data obtained from the Phase <br /> II report of WHF Environmental for that site. <br /> Drilling to depths of 50 ft has revealed <br /> that the near-surface <br /> deposits can be divided into four stratig p ' is a clayey <br /> uppermost unit, farmed "Clay A" by WHF Erox mately 16 ft. The clay <br /> silt that extends from the surface to approximately <br /> =p art due to near-surface <br /> is brown to orange-brown in the upper <br /> the Lower part due to <br /> oxidation., but becomes blueish-gray <br /> redUCing conditions. <br /> ft of sand ("Sand <br /> "Clay A" is underlain by approximately 20 and both clay lenses <br /> f The sand varies from fine to <br /> locally. "Sand grained, <br /> I" is wat r bearing in <br /> and gravel lenses are present <br /> the site area. <br /> The third unit ("Clay B") t 25 is a stiff, relatively homogeneous blue- <br /> area. it was <br /> gray clay bed that is udeeperbboringsfattthek3320in tWe Weber site. <br /> R penetrated only in <br /> "clay B" is underlain by an unknown thickness of fine- to medium- <br /> grained granitic sand. Only two ep enou h to penetne rate this sandat e <br /> 1320 W. Weber site were drilled dWells <br /> eep g <br /> s This sand ("Sand 2") is also water-bearing in the site area. <br /> F. <br />