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It is important to recognize that all septic systems have a lifespan,which is dependant on several factors <br /> and is therefore difficult to determine. Septic system failure would primarily result from the advanced <br /> formation of a "biomat"or"clogging mat'on the wetted soil/effluent interface. This mat is composed <br /> mostly of aerobic and anaerobic bacteria and bacterial products consisting of a slime of polysaccharides. <br /> Since the filter bed will be installed high in elevation,there will be a greater opportunity for oxygen <br /> intrusion from the atmosphere,thus theoretically assisting in biomat degradation,along with promoting <br /> evapotranspiration as discussed above. <br /> VI. LIMITATIONS <br /> The findings,opinions and conclusions of this report are based upon information from standard <br /> engineering and analytical test procedures, contemporary scientific literature and agency consultations. <br /> Information in this report is deemed reliable by the sources from where it was obtained. Results of the <br /> percolation testing should be assumed to only represent the subsurface conditions encountered in the <br /> specific area of testing and not of the entire proposed effluent disposal area. <br /> This report is based upon current scientific knowledge to assess factors which are extremely variable and <br /> complex within the environment. Although there are several methods to predict environmental impact <br /> from a septic system, San Joaquin County Environmental Health Department Sewage Standards and <br /> requirements have been employed for these purposes, and for this project. Therefore, no guarantee or <br /> warranty concerning any aspect of this investigation, is expressed or implied. <br /> The opportunity to provide this service for you is appreciated. If there should be any questions regarding to <br /> the information contained within this report,please contact the undersigned. <br /> NLS§5.1,SSS§ 7.1. <br /> Respectfully submitted, <br /> PROVOST&PRITCHARD CONSULTING GROUP etofessio <br /> �,t�Dop D Ch"oa F` <br /> o No.75479 m <br /> Don Chesney, .E.,R.E.A. * P June 30,201 <br /> Registered Civil Engineer#C 5479 <br /> Registered Environmental Assessor#4675 der o Civil fot�� <br /> 10 <br />