Laserfiche WebLink
05/26/2009 13:27 9518273349 DOUGLAS KUNEY PAGE 07114 <br /> from neighbors, or property lines, and g•rea ger isolation is <br /> desirable. <br /> Locate lagoons downhill and at least 300 fei6t from 'Wells. <br /> Avoid sites close to the shoreline of streams and lakes, or <br /> in the flood plain. Construction in relati ely impervious <br /> soils is pr*farabla. The bettom and sides bhould be sealed <br /> using a suitable compacted clay layer, ispe�meable membrane :} <br /> (plastic, rubber, etc.) , or conte. Local. SCS personnel F. <br /> usually can advise about the best site strategy and 'Which <br /> procedures are acceptable to recmlatery sut Aties. Most <br /> sails will physically and biologically seallin as a <br /> result of organic wastes in the lagoon. petmeability in , <br /> theca cases may be reduced by means of orgaia solids being <br /> trapptd 'Within soil pores at the :oil au�a�a. zn addition, <br /> biological slime' may help bind manure solus and soil <br /> particles to stxengthan the seal. Each a may have <br /> d�.ff-rent policies as regard the acceptab�ty of physical. <br /> and biological sealing. However, such sea g mechanisms <br /> are definitely unacc gPtAble where fracture rock extends► <br /> into the lagoon, where rock is separated fx'om. the lagoon by :. <br /> a shallow layer of porous soil, or in the Case of sinkholes. <br /> Such sites should be avoided to prevent Mous groundwater y <br /> pollution. <br /> i <br /> While not preferred, construction of lagoo� #:n poorly- <br /> drained, high water table soils may be accelptable in some <br /> cases. Research with swine and dairy lagodns has indicated <br /> little pollutant movement into the shallowIgrovndwater under <br /> saturated soil aonditio", gavever, local ,and state <br /> regulatory policies vary and should be chedked. Careful <br /> attention to lagoon donstruction and management must be <br /> practiced to minimize risks in times* cases) Lagoon side <br /> slopes. both beneath and above crater levels must be flat <br /> enough to remain *table so that physical said biological <br /> sealing can a== and remain intact: a>zy ekoding or <br /> sloughing of banks ieakes it doubtful that i seal can be <br /> maintained. To prevent breaking of the physical and <br /> biological seal an the lagoon sides, contents must never be <br /> pumped below the lavol of the exist,im water table. =f you <br /> are doubtful about suitability of soil and' gaological <br /> conditions at a site, Soil Conservation Sa;ice or Xxtension <br /> personnel may be of assistance. <br /> consider long-rWsge plans before luting ihe la►goen_ <br /> Poultry production system are often it is <br /> less expensive and easier to make a lagoon': larger initially <br /> when all equipment is on the site. After the lagoon is in <br /> User it is difficult and expensive to enlaige. to meet the <br /> treatment v+vlWW standards in a single cell.. With long- <br /> range planning, it is often possible to build the lagoon <br /> large enough to ae�commodate the wastes from all anticipated <br /> buildings. An added "advantage is gained sbmce lagoons <br /> function best with continuous. ioading, and a practical <br /> 270 <br />