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E'd 3ohnsoft inqujired how ranch sludge is produced. <br /> responded 8 million gallons in 1.084. He noted <br /> "and is utilized in the prograra and that <br /> .4; res of <br /> �at. 100 ac-_ <br /> he rate of application, though de-endent on the <br /> consentration of Sol-ids, is 25-27,000 gallons/acre generally. <br /> Jin•vy Faust -incldired' about heavy metals in the sludge <br /> Tuilliamson- responded there are trace elements which remain in <br /> t1he soil with the excep�ion of those taken up by the crop <br /> cove. He continued, that -the l-ife of the site is determined <br /> by the ability of the soil to assimilate the metal of <br /> concern, <br /> Dr.Rubin continued indicating - that the annual <br /> (e..,.phosphorus) and cumulative (ex.copper) loadings for <br /> various metals and elements govern the rate of ,application. <br /> P <br /> Rubin added that plants will uptake these metals at differing <br /> ates lie noted t!lat EPA sets very conservative maximum <br /> uizmulativa loadings (CEC) <br /> const asked if the metals can be removed at the plant. <br /> vuiamson responded that s6 me are precipated out in the <br /> treatment -process. Foust noted that the presence of heavy <br /> metals was at issue in the Jordan Lake versus Cane Creek <br /> debate. Rubin noted there metals could be removed with <br /> significa,it costs involved. <br /> Rubin' asked what the concern was regarding these <br /> matters. , Edelman responded the level of concentration on the <br /> Sites. Hartley questioned . cumulative loadings with twro or <br /> mo;ie metal load limits being reached at the end of the sit-O' s <br /> life-. Rubin responded that many are removed by crop uptake; <br /> 0-1-",e---*S from stable organic kelites, and other.s are <br /> petwanently stored ciz. 4%-.h-.. e.zchange siZ-e. <br /> Hartley questioned groundwater depth on the .site. Rubin <br /> he <br /> responded that the storage capacity of the soil is in It <br /> first 6-12" of -soil. Hart-ley raised the issue of the <br /> contahination of the Johnson well. Rubin questioned t-,,nether <br /> the well tuas a Protected vvell. There w-as much dIS-cussion cf <br /> his particular circumstance. <br /> Hartley questioned the private property owner 's respon- <br /> sibility in protecting their wells from municipal set-tage <br /> v-aste disposal. Rubin responded the process reC17 clod <br /> j <br /> agriculturally viable nutrients. gartley raised the issue of <br /> the : .legal definition of the operation as a function of a <br /> se age system. <br /> Edelman inquired about the volume applied. Rub in <br /> responded it is less than 1" on an acre. <br />