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tiOA Project Number:E06040A Page 3 <hc w"CCC foa _nctt: r"&ngs from two similarly si7edbuildings wi+li corresponding uses as the proposed Bird Electric industrial warehouse,the average flow is approximately 86 gallons per day.We are assuming that the above referenced flow metets were serving businesses on a five day work week Ince Bird 1✓lectnc, and thete£ore,will not take off the standard two-s_venths of the final avcrage daily flow. The new calculatio t based on the revised low numbers previously c:i,cuss'd for the Nittatc L Lading Stt.dy is shown in Table 2. Table 2. Swnwarg of Nitrate Mass Balance Analysis, _ Parcel T{:-sn1t hares A-rerageAaily $ffluent LeachEeld Dccp- ---=�� (Ne)x I(A) Flow(Q) COneenon^ Denitrift- Percolation of (mg/1-N) ( (Table 1) dation(Nw) caviar.(d) Rain"(R) (gPd) (mg/I-N) I (Plate 1) (is.)— i 12.8 9..C4 SG 85 y 33." 3.99 'c+d.(ICD fm r-u tc i�drinking writer is 10 mg!T,!' Because the site is relatively Ont,we do rot fore-,;cc percoladr- e fluent aEf etitlg any su.-face wstet regro]tC�S. Tq)-A.S.Titrate Impact Based on the method and assumptions described, the result of the nitrate loading balance indicates that the proposed dc7clopment on to u proposed parcels could cstusc a slight build up of nit ate. in the azluifer 2.I mq/I.-l�above the maxnaum contaminant level of 1C ing%L Y- It is out?ATOA's opinion that'this increase of nitrate above the rad +x_rrum tonta-titrant Jere.will have little to no potential impact on groundwater. Pine grained sediment and the degree of cementation can provide an Stided protcction between percolating effluent at the outface and shallow ground The lorlgez;the effiuert remains neat the surface he mots ttem"mentis enhanced wafter aquifers. cb.e to natural prooe-5ses within the soil'I ne soils onthe site were ve;T high in clay content. Soils of vF,js type do not typically presort a h Rh ri It of excessive mass transport of tnitzste or oehcr constituents of concern.Tae depth to groundwater at the site is between 60 and 70 feet below; ground surface,provhdin_g substantal&,;tfucc to groundwater which gre-ady increases the area in which the ground can naturally filter. :fr c ;: ninon:,^ea C,c tk,e u;lixnf.on of a larges septic tank tv increase retention tizzy . `T e ?1« recot-mend mn ..'Tng low flow $mires on site.Long-term waste water flow generated £torn the proposed warehouses could be greatly reduced by installation of these fixtures,