Att11 - Land Suitability (effluent) Report

FPE Ref: 6195-220404-1.0



  3.0 PROPOSED OPTIONS FOR EFFLUENT DISPOSAL

           ASSESSMENT OF SOIL AND GROUNDWATER CONDITIONS

  The soil, groundwater conditions, and percolation tests results at the site indicate that the site is suitable
  for on-site sewage. Groundwater or seepage was not observed between Natural Surface Level (NSL) to
  3.0 metres depth, at the time of inspection. In terms of on-site wastewater disposal, the soils must be free
  from the potential migration of effluent volumes to the regional or local water table.

  It is therefore noted that adequate vertical separation distances will be available for the subject allotment
  for on-site wastewater disposal to occur in accordance with the Queensland Plumbing and Wastewater
  Code.

           SYSTEM SELECTION

  Based on the geotechnical characteristics at the site, it is anticipated that an on-site sewage treatment
  system can be designed for the proposed development. All wastewater generated would require treatment
  to a minimum advanced secondary standard.

  Typical quality criteria for advanced secondary treated effluent nominated in the AS1546.3 are
  summarised in Table 3.

  Table 3. Quality Criteria for Advanced Secondary Treated Effluent

                                                                         Advanced Secondary

                            Parameter                 Units                  Treatment

                                                                          Acceptable Limit

                         Suspended Solids              mg/L                      10

                               BOD5                    mg/L                      10

                      Thermotolerant Coliforms      cfu/100mL                    10




           HYDRAULIC LOADING

  An indicative hydraulic loading has been calculated based on conceptual plan for the development which
  includes:

       ▪      Overnight population of 300 campers; and
       ▪      Overnight population of 20 staff members.




20 April 2022                                  Land Suitability Report                                             6
                                                  CYC Campsite
                                             48 Kabi Road, Cootharaba