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1 _ _ <br /> I. INTRODUCTION = - <br /> SSS§'1:2. r.. d Mrs. Bill and Rita Sorrent are To osing to subfivide a fG6 acre property <br /> .they own i to six rets. ,One Parcel is to be 10.45 aches, another at 11.11 'c s, another at 11.81' <br /> and three P cels tl 1.2 aces. The project is kina.a.rural,-unsewered area-of San Joaquin County;/ <br /> northeast of t t wn.o£Escalon. City water,and sewer services will never serve this area. Domestic <br /> _ water and sewer forany future.development will be septic system and on-site domestic well. <br /> f .. <br /> = This report presents the findings of the Nitrate Loading Study and-.Soil Suitability Study _ <br /> conducted for the proposed subdivision of the subject property. The San Joaquin County <br /> Environmental Health Departmerif(EHD) requires Nitrate Loading and Soil Suitability Studies for <br /> projects in unsevered and/or currently nitrate impacted areas, or for projects which may <br /> potentially_impact the underlying groundwater with nitrate. The primary concern of nitrate in <br /> drinking water is'that high concentrations can cause methemoglobinemia in infants. This disease <br /> occurs through a series of complex chemical reactions within the hemoglobin in the blood. Only <br /> infants and young children are susceptible. Although this disease is extremely rare, nitrate can <br /> also potentially cause other health concerns. There have been scientific studies to suggest that <br /> nitrate may produce carcinogenic effects. . <br /> This report complies with the San Joaquin County.Development.Title, Section 9-1105.2 for a <br /> Nitrate'Loading Study and Soil Suitability Study. Additionally,'this proposed project must comply <br /> with the Environmental Health. I Department Sewa a Standards-s ci ica ly Section 10 - <br /> "'Require ffients for Waste DisposaFfor New Land Developments." <br /> In surmary, the following information was obtained from. studies:Results of the soil percolation j <br /> testing reveal that the surface soils (typical leachline depth)will not readily manage effluent flows for <br /> any future residential development.-This was to be expected since the subject property has been in rice <br /> N production for many.years and is lmown for its heavy clay and hardpan soils. The subsurface soils <br /> (sumps or seepage pit depth)will manage the majority of future effluent-flow volumes for all six <br /> _proposed Parcels.° <br /> This Study determned thenitrate-nitrogen impact from the proposed six Parcels, quantified through the <br /> scientifically recognize_d Hantzsche-Finnemore Equation,would theoretically produce a nitrate-nitrogen <br /> effluent concentration that is below the Maximum Contaminant Level State Standard of 10 ppm nitrate- <br /> nitrogen covering the entire 66.3 acre subject property. <br /> Withinthetext of this Report,bolded Section (§)numbers will be referenced at the beginning of an <br /> applicable sentence,paragraph or Appendix that correspond with the EHD Requirements Checklist. <br /> Section Numbers referenced as-SSS§, are sections applicable for the Soil Suitability Study. Section <br /> Numbers referenced as NLS§, are sections applicable for the Nitrate Loading Study. <br /> Page 4- <br /> _ Chesney Consulting <br />