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This study involved audits of 150 on-site sewerage systems, soil and groundwater sampling, selection of a shortlist of partial, full or no on-site (community) designs for phased implementation, risk based modelling of current and future full build-out scenarios, implementation planning, concept design of 4 selected

This technical review was completed for NSW DLG from 2003 to 2006 and involved an update of the 1998 Environmental Health & Protection Guidelines. At the time, the NSW Government departments involved were to complete a review of the regulatory sections but this was not

Study to identify appropriate treatment options for Small Villages within the Meander Valley Municipality. The study involved consideration of both on-site and community system options and the identification of appropriate locations, methods and costs for innovative sewerage servicing of small villages in the study area.

Options studies and preliminary designs for decentralised sewerage treatment and reuse facilities were undertaken for Murrindindi Shire Council.

Whitehead & Associates prepared the initial Baw Baw Shire Domestic Wastewater Management Plan in 2006 and a revised document in 2015. This was followed by a subsequent audit of the DWMP in 2019. The DWMP has involved the completion of a detailed risk assessment for

This study involved a review of existing on-site disposal systems including site audits, assessing minimum on-site land area requirements based on risk analysis of site constraints, identification of appropriate on-site servicing options and community schemes and P20 capital, operating and net present cost analysis.

This project initiated development of the Decentralised Sewage Model (DSM) which we have subsequently used to evaluate the site opportunities and servicing options for numerous other villages in NSW, VIC and TAS. The project involved thorough research of available technologies, management models and construction, operation

This involved the development of the second stage of the GIS based OSRAS model and its application to eighteen Local Government Areas in the Hawkesbury Lower Nepean Catchment (jointly with WBM Oceanics). NSW Department of Local Government.

This study involved the development of a wastewater management strategy for a rapidly expanding population in Tasmania. The population was serviced by two small wastewater treatment plants at peak capacity in two small towns, a Common Effluent Drainage system servicing part of one village, a

This project involved the development of a set of ‘standard drawings’ for on-site wastewater management system components such as sand filters, reed beds, subsurface irrigation systems, trenches and ETA beds. The document provided clear advice to designers and installers on appropriate construction standards for on-site

This project assessed the nature and extent of impact of on-site systems on surface water and groundwater and investigated the impacts of on-site system density. Systems in a densely developed lakeside village were mapped using GIS and surface drainage systems mapped and monitored to determine

Assessment for a 50-lot subdivision to assess the potential for export of nutrients to oyster leases in an environmentally sensitive coastal lake system. Pambula Lake, NSW.