Community Assessment Report - Onsite Sewage Treatment ...

with CAR ID#13 is allowed to build across the road. Most of the Type 3 systems are classifiedas such because they will require a variance from a required setback (well, property line, surfacewater, or building) for installation or because seasonally saturated conditions are less than 12”from the ground surface on the property, requiring a mound with three feet of sand under theeffluent dispersal area.Appendix B contains a table and figures that document the likely next ISTS for the evaluatedparcels. The mound locations as shown in Appendix B figures are estimates only, and aresubject to change based on homeowner preferences and further design work.3.2.4 ISTS Alternatives Summary• Community Owned/Managed ISTS Program Alternativeo Advantages• Economy of scale for operation and maintenance expenses• Capital costs based on need• Public financingo Disadvantages• High operation and maintenance expenses for full-time residents on holdingtanks• Holding tanks pose practical limitations for future use and development of aproperty• Type 1 or Type 3 mound systems are not desirable for some residents basedon visual impact or planned property use preferences• Property access coordination and easements for ISTS maintenance• Private ISTS Program Alternativeo Advantages• Capital and operation and maintenance costs based on need• Potential lower capital costs experienced by homeowners if funding isobtained through BWSR or Chisago CountyT:\2797-01 Chisago County\CAR\ROLLINGS SHORES CAR 090712.docx3-7