Laserfiche WebLink
• A-� KLEINFELDER <br /> 3.0 sa)m CSF WOW <br /> 1' <br /> 3.1 Drilling of Soil Borings <br /> A series of soil borings will be drilled along lines radiatim away from <br /> 1 <br /> �.' • the tank excavation area in an attempt to ascertain the vertical and <br /> horizontal extent of hydrocarbon ca .uxds <br /> in the soil. The initial soil <br /> ` boring for each � radial line will be placed approximately 10 to 20 fee <br /> sway from the tank excavation area. 64l sax les�willkWcollectedtati <br /> 5=foat�•i:iit-�enrals <br /> starting.n atl aldepth i of t 5 ifeet3belvw4the�ground�surfaoe. <br /> In each boring, sampling will continue until 5 feet above the anticipated <br /> troleum hydrocarbons <br /> is not <br /> elevation of ground water or the presmioe of pe ydro <br /> indicated in two consecutive samples. The'[estamateddepths <br /> lforIthose. <br /> _ .� ,. <br /> �.. Kboringsw:notw65kvletedv[as rn�nitorirng 1ls is. 30�feet.: Borings through <br /> obviously contaminated areas will not be advanced into ground water to <br /> minimize the potential for artificial introduction of hydrocarbons into <br /> s <br /> the ground water. Boring permits will be obtained from the San Joaquin <br /> County Health Dep artmen prior rior to field mobilization. <br /> - din the intialisoil <br /> Ifthe .pofjpetroleum vhydrocarbonsisindicated <br /> E}�oririg."_w the nej&tsoi]-4bor g�will be?�drilled l04feet.tfurther awayAfrc jthe3 <br /> {tarnk excavation areaWalong tithe wrad al line Thingssoil borwill be <br /> drilled at 10_foot lateral intervals along each radial line until a soil <br /> boring is drilled and sampled in sediments that are free of hydrocarbon <br /> compounds. The In=tber of soil borings neaessaxy to assess the lateral and <br /> vertical extent of contamination is unmown in advance of collecting <br /> subsurface information. Based on Fleinfelder's experience of similar site <br /> assessment projects in the stockton area 9 soil borings have been included <br /> to provide meaningful project cost projections. It <br /> ,e actual number of soil <br /> 29-8803 7 <br /> 4 <br />