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05f26f2009 13:27 9518273 DOUGLAS KUNEY PAGE 07/14 <br /> from neighbors, or property linesr and greater isolation is <br /> desirable. <br /> C <br /> ]Locate lagoons downhill and at least 300 fe t fr= wells. <br /> Avoid sites close to the shoreline of and lakes, or <br /> in the flood plain. Construction in reilatiirely impervious <br /> soils in preferable, The bottom d sides khould be sealed t <br /> using a suitable compacted clay Layer, eta le membrane <br /> (plastic, rubber, etc.) , or concrete. Locai SCS personnel :. <br /> usually Can advise about the best site s and WrLich <br /> procedures acceptable tatory authorities. Most <br /> soils will physically and biologically seallin time as a <br /> result of ozVanic wastes in the lagoon. Pek=eability inthese ' <br /> cases may be reduced by means of aa sratxift being <br /> e�3diti4 , <br /> trapped �ti soil at soil adze. <br /> biological i slimes may help a soli" soil <br /> dparticles to stre en e a �e may have <br /> iff t policies as regard the accepotabillity of physical <br /> and biological sealing. However, such sealing mechanisms <br /> e definitely =accaptable where tractured <br /> into tue lagoon, where rack is separatedftp the lagoon by <br /> a sba-11aw layer of porous sail, or in Vie case of s ol+es. <br /> Such sites should be avoided r ,vent sexicus groundwater <br /> pollution. <br /> While not preferred, constxuation of 1 in poorly- <br /> draiz%ed, high t le: lee in some <br /> cas". Research with lagodas has indicated <br /> little pollutant Mveseft into the shallowIgroiundwater under <br /> soil conditions. Nawevere localland state <br /> regulatory policies vary and should be chadked. Careful <br /> attention to lagoon construction and management must be <br /> proet-scoa to minimize risks in these casesJ Lagoon side <br /> slopor both beneath and above waterl e1r be flat <br /> enough to remain *table so that physical biological <br /> sealing can occur and r y g or <br /> sloughing of it doubtful that i seal can be <br /> maintained. To prevent breaking of the icai and <br /> biological seal an the lagoon sides, cammamust never be <br /> pMY below the level of the Mcistingt table. If you <br /> aboutare doubtful suitalbility of soiligeologi <br /> ti at a site, Soil S , i+ce or Extension <br /> personneluay be of assistance. <br /> Consider long-range plans before locatlagoon. <br /> Poultry production systems are often and it is <br /> 1 sive i a lagoon! I, ' initially <br /> when 1 is an t la on is in <br /> e, it is difficult and expensive to a to most the <br /> treatment. valmm standards le call. With leng- <br /> e planning,. it is often possibleto build the lagoon <br /> large enough to acs wastesfr all anticipated <br /> buildings. a .a is gained shoe lagoons <br /> function ]best with contindous,loadings, andl a practical <br /> 270 <br /> i <br /> i <br /> ,6 -.... <br />