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0512612009 13:14 9518273-2-49 DOUGLAS KUNEV PAGE 07109 W-18 AnMOID1C L49001151 =9e/1 rrvatme t of Livestock Manm versity of M1...Page 8 of 1 U a A between the upper pump4ow mark and the spillway is the vakrme of 25-year,24-hour atom.This volune is called The safety volume. tithe open-lot surraee area contributing to the lagoon Inflow Is greater Ion 70 percent of the lagoon area,the safety volume depth Is computed using rte fall ing fottrula! Safety v9kmhe depth-0.67 tet a((Square foot lot sumacs x 0.6 fast)I square foot lagoon Surfer arse) Pump-down or manure level markers Pumlydo>hm or manure level markers.or indicators,are a simple but irr porlant component of a manure stone TO Iffy, Such a marker enables the operator to ascertain quickly and easily the degree of fill of the lagoon,the point at which pumping or omptying should begin,and the paint at which it should on ,The presence of a durable,easily read marker givca inapootlon or regulawry porsonncl confidonom trot a lagoon is Leung monogod properly. Experience has shams that pump-downmarkars must be mate of dule mallerlois and proWY Instsiled to afford the long life needed,The operator or InapooW should be able to ascertain the following information when observing a pumpdown marker. . ften pumping operations should begin. . Man pumping operaons snoumo enc, c Laval at which overflow will occur. ® Fraction of total storage that is currently filled. A common tmotice is to Install steel fence posts at the upper and kawe pump-dim navels for earthen impoundments. While flees approach provides basic infomration on beginning and endir g pump-down,experienca has shown that MM knowledge is needed.Also,fano poets insmlled in this mann•arc su+jeet to 0amne and tihtplanstnm t A prat pump-down marker will i the level,or elevation,of manure thAX ghoul the possible range(from imver pump- down levet to overflow,ors In the lagoon.Experience has shovin that a 6"x 6"Tread arced postpr'oped imbedded makes a good pump-down marked•.Notches or other I ndicatilts can be carred into the post to show penntent elevelloos.Painted numbers or colors on the post are not durable emigh to ma Irnakh readability aver a number of years.Figure 4 shows a type of marker designed to moat the above cr6ria, I Fiat"4 � vow"sof 25"at,• Rump-down marker In an anaerobic lagan. 244Vtsr sem"n(typal? off S Spiway rtcn�e�uatiai or normtV � `.�,Jj;�a •tSelposCatsl�•tlaep '•. I j II Pwmanent markets should be Installed to show the at which paftfnping the lagoon Should b0gin(t fit or more below full OW level)and the leve)at which pumcinp Should stop.f ate markings,such as at each fool are desirable to tetter eatanata the volume of affluent in The lagoon.a de$th gage with ma"s every foot or leas from the design naval to the full pool level can be an aid In determining the screlinohes to be pumped down each time, Pump-down and land application Preparation for lagoon pumpoown should start before the lagoon low I reaches the upper pump-down marW to leave the proper safety volume to contsin a 25 year,24 hour rainfall event bgII&W befofe and during Pump-down is mcornmrended to annum mettied mMu nrsl achieve marsmum nuvien t recovery.if the lagoon is to be agimtad,a sample for nedtent Testing should be taken after agitation. Land applrcaiion is the most desirable method for MSkinp use of the rtutrienia and organic matter lel lagoon effluent. Sprinkler Irrigation or use of a bactor-mounted applicator�m the oun4nt m of transpkxting and applying large volumes of I nt. Uh Kh o use Unified National$trilogy for Animal reading Op"trons,ale desired outaomo to for an esnoentiktse animal feeding opendlans to develop and implement a comprehensive nutrIcht management pian(CNMP).CNMPs should h5/21/2009 ub-as.px`--EQ387 5/21/2009