A good site evaluation is key to the design process and provides sufficient information to select a suitable, cost-effective treatment system. To this end, a site evaluation should be a systematic process that provides information with enough detail to be useful for the design. This evaluation must collect relevant data to allow a designer to determine whether or not a lot contains a sufficiently large area with suitable soil to serve the proposed uses of the lot. The person conducting the site evaluation may be a county/state sanitarian, an engineer, soil scientist or designer. Regardless of the required professional, they
