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[6] Cont. <br /> soil texture of the subject site. With this adsorption, ammonium becomes "fixed" and is unavailable <br /> for biological transformation to nitrate. Denitrification occurs under reduced oxygen supply of <br /> anaerobic conditions. This happens when water or effluent fills the soil pores. With a clay or silty <br /> soil structure, soil saturation is easily achievable, thus promoting an anaerobic environment. Under <br /> these conditions, nitrate-nitrogen serves as an electron acceptor and is reduced to harmless gaseous <br /> nitrogen forms. <br /> As can be noted, there are opposing and conflicting processes between molecular nitrate <br /> denitrification and clogging mat degradation. Denitrification takes place under anaerobic conditions, <br /> however, clogging mat degradation is retarded. Therefore, it is our opinion that the use of seepage <br /> pits are necessary since anaerobic conditions will probably prevail and promote denitrification, and <br /> not clogging mat degradation. <br /> It is a possibility that dairies in the surrounding area, along with intensive farming are contributing <br /> excess nitrogen in much greater quantities than low density housing. <br /> [7) LIMITATIONS <br /> The conclusions of this Soil Suitability Study are based upon current information concerning the <br /> location and results of the percolation testing, and the highest anticipated depth to groundwater. <br /> The results of the percolation testing can only be assumed to be representative of the subsurface <br /> conditions encountered in the area of the testing. <br /> It is our opinion that the findings included in this study are a reasonable assessment of the current <br /> subject property conditions. This opinion cannot constitute a guarantee or warranty, either <br /> expressed or implied. <br /> Respectfully submitted, <br /> QUALITY CONTROL INSPECTION, INC. <br /> Don Chesney R.E.A ;JW P.E. <br /> f®r Q-1ity Control Inspectirni <br />