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CONCLUSIONS AND RECOMMENDATIONS Based upon the findings of this research report, it is my opinion that the Nottingham OWTS currently servicing the Country Manor MHP could be decommissioned and a relatively conventional septic tank system installed. The following issues would be incorporated into a proposed design, based upon concurrence from EHD: The septic tank may be a three-compartment tank, in lieu of two compartments. Or the installation of a new headworks trash tank in front of a two-compartment tank, sized appropriately. Secondly, an effluent filtration system could be engineered and installed in a septic tank system. Effluent filters have been proven to decrease TSS, BOD, COD and Org-N concentrations by proper filter cleaning maintenance, and periodic tank pumping to decrease nitrogen concentrations by 30% or more (Ref. 5). Thirdly, as noted on the effluent disposal schematic, the disposal areas have a relative degree of complexity and management options consisting of leachlines and seepage pits. The leachlines should be used predominantly for effluent disposal since the soil characteristics and soil environment under the leachlines illustrate nitrogen mitigation. The existing seepage pits should be used when hydraulic stress occurs during the winter months and rainy season. LIMITATIONS The findings, opinions, 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. The findings of this report are based upon current scientific knowledge to assess factors which are extremely variable and complex within the environment. There are several methods, opinions and procedures to predict environmental impact from an onsite wastewater treatment system (OWTS). Therefore, no guarantee or warranty is expressed or implied concerning any aspect of this report, 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 this report. If there should be any questions regarding the information contained within, please contact the undersigned. Respectfully submitted, ofess� CHESNEY CONSULTING �� `XT ch . c � n oe No. 75479 Don Chesne , PE ,�f Civil Registered Civil Engineer #C75479 die Of CroM`° Page -6- ('hocppov rnncriff;m"