1.0 Introduction

From the 1930s until 1988, FCC operated a factory on the site which produced a range of agrichemicals. These historic activities left a legacy of contaminated soil, marine sediment and groundwater on and adjacent to the site. The major contaminants of concern were persistent organochlorine pesticides including DDT, DDD, DDE, aldrin, dieldrin and lindane.

By the late 1990s, the Tasman District Council (TDC) had inherited the site and, in conjunction with MfE, began to consider potential remediation options from that time. The intention was to render the site suitable for a range of uses including residential, commercial and recreational. Resource consent for the chosen remedial solution was granted in 2003. Site works commenced late 2004 and bulk earthworks were completed in January 2008 (MWH, 2009f). The remediation Validation Report was submitted to MfE in December 2008.

This report provides an independent audit of the remediation and an assessment of whether the site is now fit for its intended purposes.

1.1 Report Structure

The report is structured as follows:

• Section 1 – provides an introduction to the project and set outs audit limitations;

• Section 2 – sets out the objectives and scope of the audit;

• Section 3 – provides a background to the project, including a brief site history and a summary of the remediation;

• Section 4 – summarises the audit process;

• Section 5 – outlines the results of the audit of the soil remediation for FCC East, FCC West, FCC Landfill and the four residential properties;

• Section 6 – provides the audit results for the two marine foreshore sediment remediation areas;

• Section 7 – summarises the current groundwater quality and provides the audit results relating to groundwater;

• Section 8 – provides a summary of the audit results and conclusions; and

• Section 9 – summarises the audit recommendations.

1.2 Report Limitations

This audit report has been prepared for the Ministry for the Environment for the objectives and to the scope set out in the report. Use by any other party or for any other purpose is at that party’s risk.

The report has drawn on work performed and information provided by others, including as-built information, bore hole, test pit, surface water, sediment and biota sampling, laboratory analysis and similar work. The information has been accepted as provided. PDP has endeavoured to satisfy itself that the information is representative of the particular locations for which the information applies, but accepts no responsibility for its accuracy in representing conditions on site.

The report is based on information obtained from investigation locations and from the results of processing material in bulk. Actual conditions could vary and PDP offers no guarantees as to the actual conditions. Conditions could change with time, thus the opinions expressed relate to the time of the actual sampling