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L <br /> LMarch 25, 2005 <br /> NOA Project Number: E05005A <br /> LMeasurement of the water level during the percolation test was from a fixed reference point on the <br /> PVC casing using an electric well sounder with an depth accuracy of 1/100th foot. All tabulated <br /> L values on the field data sheet (appendix) are in decimal feet. After water drop was observed,the <br /> holes were checked for refill. The refill level was approximately 0.5 ft (6 inches) of water above the <br /> bottom level of the percolation test hole. The readings were taken every 30 minutes for a period of <br /> four hours. <br /> L 6.6 Percolation Test Forms and Results <br /> LThe completed percolation test form is included in the appendix of this report. <br /> A shallow percolation test is defined by the EHD as being between 36 and 42 inches in depth;a <br /> Lsatisfactory percolation rate for a shallow test is less than or equal to 60 minutes per inch drop. A <br /> deep percolation test is defined as being between 3.5 and 25 feet in depth;a satisfactory percolation <br /> rate for a deep test is 30 min/in or less. One percolation test must demonstrate a satisfactory <br /> percolation rate within the proposed septic system disposal field of each parcel to utilize a standard <br /> septic system. Details of the percolation tests are summarized in Table 5. <br /> Table 5. <br /> L Summary of Percolation Tests. <br /> Test No., Percolation Percolation Rate Test Comment <br /> LDate Tested Test Depth(ft) (minutes/inch) Duration (see notes) <br /> P-1 shallow,3/14/05 3.08 ___ 4-hr No movement last half and <br /> hour,fail <br /> P-1 deep,3/14/05 15.00 __ 4-hr. No movement last half and <br /> hour, fail <br /> L Note: A satisfactory percolation rate for a"shallow'test is less than or equal to 60 minutes per inch. <br /> A satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. <br /> 6.7 Discussion of Percolation Test Results <br /> L <br /> The soils within the sewage disposal areas of the site have n satisfactory ereo <br /> rate in accordance vat ere iso the a use of a standard se tic s stem. The �IiaO <br /> L <br /> sols of these parc-erappear to be suitable for an engineered septic system. Te recommend a Civil <br /> Engineer prepare a septic system design for the Parcel unless additional percolation testing on the <br /> L Parcel indicates a satisfactory rate is achieved and approved by the EHD. Our office has be <br /> contracted by the client to prepare engineered septic system design. They will follow this report <br /> shortly. <br /> L <br /> L <br /> L 8 -04 <br /> L <br />