Presentation to Hazel Run, MN community members about their wastewater treatment options. November 2008. Small Community Wastewater Education Program (SCWEP) and Onsite Sewage Treatment Program (OSTP) staff have assisted numerous communities hire professionals to prepare a Community Assessment Reports and Preliminary Engineering Reports; however SCWEP and OSTP have never prepared a CAR or PER. In order to better teach communities and soil-based treatment system professionals about the CAR process and report writing process, program staff undertook the research required to complete a CAR and PER, write the documents, and disseminate the project results to community members and leaders.