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' along two sets of o),erlappi,ig traverse lines in this area Ont, set was oriented <br /> south to north. The other set was oriented from west to east We spaced the <br /> traverse lines 10 feet apart because buried tanks from the 19'i)'s and 1970's <br /> tend to be large u w <br /> r <br /> C Depth of Raid,_Penetration 1' <br /> 1 <br />' The depth of penetration of the ground penetrating radar IiT)ends largely on <br /> the clay content of cho soils, tine alkalinity of the pore fluids, -i id the frequency , <br /> ' of the antenna The depth of penetration at this'siteuwas apx. {innately 4 feet <br /> r <br /> r <br /> r <br /> r L , <br /> r <br /> r <br /> v ! 1 <br /> o I <br /> I <br /> I <br /> 4 <br />