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NLS§4.2. From the soil physical and chemistry test results,there is significant denitrification potential within the soil environment due to the high clay content soil. Significant denitrification potential was observed in a project 650 ft to the north which possesses the same soils as the subject property. The nitrate loading calculations demonstrate that the accessory unit dwelling can be situated on the property without exceeding the loading standards. Septic tank pump-out intervals should be every two to three years to remove the nitrogen within the septage. Accurate"as-builts"of the onsite wastewater treatment system filter bed are to be supplied to the Environmental Health Department. The filter bed area is not to be parked on or driven over. It is imperative to recognize that all septic systems and disposal areas have a lifespan. This lifespan is unpredictable due to the numerous operational and environmental factors involved. A critical lifespan issue is controlling and restricting the on-site water use as much as possible. VI. LIMITATIONS The findings, opinions, calculations and conclusions of this report are based upon information from standard engineering and analytical test procedures, contemporary scientific literature and agency consultations. Information used in these studies is deemed reliable by the sources from where it was obtained. This report is based upon current scientific knowledge to assess factors which are extremely variable and complex within the environment. Although there are several methods to predict environmental impact from an OWTS, San Joaquin County Environmental Health Department Onsite Wastewater Treatment Svstem Standards and requirements have been employed for these purposes, and for this project. Therefore,no guarantee or warranty is expressed or implied concerning any aspect of this report and investigation, or for the prevention of environmental impact. This report is not to be used, in whole or in part,by any private or public entity for any subsequent studies or reporting on the subject or surrounding properties without the expressed written consent of the author of these Studies. If there should be any questions regarding the information contained within this report,please contact the undersigned. NLS§5.1,SSS§7.1. Respectfully submitted, a 4 c o f ess�o�o��. Ches a CHESNEY CONSULTING No.75479 ti s�dt Civil Don Ch sney, P.E. e Of Califot Registered Civil Engineer#C75479 9 Chesney Consulting