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F. Ahemate Percolation Test: <br />Alternate percolation test or other soil test procedwes may be approved by the local <br />heahh officer or his/her designated representative providing the test results of <br />alternate procedures meet or exceed those determined using the test procedwe <br />detailed in this section. <br />G. Soil Profile: <br />One (1) soil profile hole shall be drilled or dug to provide observation of the soil <br />profile of the area of the soil absorption system The hole shall be prepared at least <br />eight (8) feet deep. The hole may be terminated when groundwater or bedrock is <br />encourrtered. The hole shall be prepared in such a way as to provide identification of <br />the soil profile fow (4) feet below the bottom of the sot? absorption system <br />H. Wafer Table: <br />In the absence of more restrictive regulations of the local boazd of health, a test hole <br />evaluation showing a dry condition estimated or measured to be at least fow (4) feet <br />below the bottom of a proposed soil absorption system during the wettest months <br />may be considered prima facie evidence that the maximum seasonal groundwater table <br />will be sufficiently below the bottom of the proposed absorption system. <br />4,04 Component Design Criteria <br />A. Desien Features (Generall <br />Reliabili~: <br />Individual sewage disposal systems shaII be designed and constructed such <br />that each component shall function, when mstatled and operated, in a manner <br />not adversely affected by the household chemicals used. Each component <br />shall be free ofnon-functional protrusions or sharp edges or other ha2ards, <br />which could cause injury to persons, animals, or properties. Design shall be <br />such as to exclude flies and rodents and to prevent the creation of nuisances <br />and public health hazards and shall provide for efficient operation and <br />maintenance. <br />2. P~ Standazds: <br />Aft wastewater lines used in individual sewage disposal systems shall be <br />constructed of compatible pipe, bonding agent, and fittings. Where plastic <br />pipe and &ttings are used, the minimum wall thickness of the pipe shall <br />conform to ASTM Standard 3034, SD1t35, or equivalent. Perforated <br />distn~bution pipe surrounded by rock within a soil absorption system shall <br />have a minimum wall thiclmess conforming to ASTM Standazd 2729. <br />Comrgated polyethylene pipe with smooth interior that meets ASTM F405 <br />and AASHTO tvI252 specifications or equivalent may also be used. Tile, <br />30 <br />