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March 26,2003 <br /> 3ob.Number:LG02-031 <br /> .:" Page 9 " <br /> ` plant.uptake. This cuts down on the time when conditions.are.favorable for los ses.1°Proper <br /> F <br /> management of agricultural property significantly:reduces the potential nitrate impact to ground , <br /> water. <br /> The vineyard"is.old zinfandel grapes,utilizing a drip irrigation system with a liquid nutrient <br /> delivery system. Specific <br /> 'details regarding the fertilizer process was not available at the time of <br /> this report. Norinally,-vineyards-arearelativelylow consumer of"nitrogen fertilizers: For <br /> ' purposes of this report, we will assume that the vineyard is properly managed and"over irrigation' <br /> and over fertilization is-minimal. It is assumed that the vineyard is"in balance"meaning all the. <br /> imgation is used for tlie'vineyard and for`ET losses, any fertilizers leaching'to ground water are. <br /> minimal. <br /> 5.4 Nitrates from Winery Waste. <br /> :. The waste water"generated fromn Wme processing is the wash rvatei needed to:clean equipment. <br /> .� : and clean the inside of the tanks. "The winery waste water is typically generated between <br /> September and-Novembe.r during the crush period. It.is planned"that the winery waste water.will <br /> " be tanked and then hauled off the site. The storage tank size is"a 5,000 gallons and is a below- <br /> ground type tank. Since the wastewater will be hauled off site to'an a proved waste receiver, <br /> winery wastewater will not- e considered in:the nitratejoading balance. <br /> Summary of Nitrate Balance <br /> 5.5 . Su y _ <br /> . Table 5 presents'the.summary of the.nitrate loading analysis utilizing the'Hantzsche and <br /> Finnemore method described previously. As a result of the analysis, the use of a septic system <br /> for five employees and up to ao customers will not cause a build up of nitrates above the. <br /> maximum contaminate level(l4 ing/L-N)given the assumptions discussed previously.. This is " <br /> F' <br /> primally due to the large size of the property;the relative low daily flow of the septic system, and <br /> the'•beneficial inixing with percolating rain water. <br /> -. .' ' <br /> ` 14 Vitosh,M.L.,J.W.Johnson and,D.B.Mengel,July 1995,Tri-state Fertilizer.Recommendations for <br /> Com, Soybeans;•Wheat and Alfalfa,Extension RalletinE-2567.' <br /> Z ° <br /> G ti <br />