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March 26,2063 <br /> Job Number:LG02-031, . <br /> Page 5 <br /> Ummary of the percolation tests. <br /> est No., Duration of the 'Percolation Test .Percolation Rate Comment <br /> Date Tested Percolation Test Depth . <br /> 4 hours 3 feet 25 min/inch Achieved . , <br /> P-1,March 11, satisfactory <br /> �. .2003.. (shallow test) <br /> Percolation rate. <br /> t . <br /> P-2,March 11 4 Hours <br /> 22 feet ,: 25 min/inch Achieved <br /> (deep test) satisfactory. <br /> 2003 ercolation-rate. <br /> NITRATE LOADING BALANCE <br /> = A build up of nitrates inground water can cause a temporary blood disorder in infants called <br /> methemoglobinemia(Blue baby syndrome). Serious`and occasionally-fatal poisonings�of infants <br /> have occurred following the ingestion of water containing nitrate concentrations greater than 10 . <br /> mg/L nitrate as N. <br /> Because of the concern of nitrafe leaching into ground water, a nitrate loading analysis was <br /> required,by the'EHD to estimate the average nitrate concentration of percolating water for the <br /> F subject parcel. If a site is contributing,excess nitrogen.to ground water,.ground water quality can... <br /> be impacted. The nitrate sources considered'for this.prof ect are percolating septic effluent from <br /> proposed facility and deep percolation of rain water containing nitrate. <br /> The xnethod.utilized.in thisanalysis is based on a simple mass balance formula discussed in a. - . <br /> ;published article by Hantzsche and Finnemore'that provides a convenient and'simplified method <br /> to estimate long=term ground-water nitrate impacts on an area-wide basis.:Hantzkhe and <br /> Finnemore found that.over a long-period of time,water quality in the-upper saturated ground- . , <br /> water.zone closely approximates the quality of percolating recharge waters. They,have found that <br /> their approach is a good planning tool and•provides useful information to planners and local <br /> t Hantzshe N.N.,Finnemore,E.3:1991,Predicating Ground-water Nitrate-Nitrogen Impacts. Ground <br /> Water,Vol. 30;No.4: <br /> Ysso�r- <br />