Groundwater Investigation ADI Mulwala Water Tower Tip Site · ADI Mulwala D0060/1/R201-a 1 21...

Groundwater Investigation ADI Mulwala Water Tower Tip Site

Prepared for ADI Limited Private Bag 1 Mulwala NSW 2647 HLA-Envirosciences Project No: D0060/1 by

_____________________________ _________________________ Damien Wigley Patrick Clarke Senior Environmental Scientist Principal Geological Engineer 21 February 2003

This document was prepared for the sole use of the Department of Defence, ADI Limited and the regulatory agencies that are directly involved in this project, the only intended beneficiaries of our work. No other party should rely on the information contained herein without the prior written consent of HLA-Envirosciences Pty Limited, the Department of Defence and ADI Limited. From a technical perspective, the subsurface environment presents very substantial uncertainty. It is a heterogeneous, complex environment, in which small subsurface features or changes in geologic conditions can have substantial impacts on water and chemical movement. Major uncertainties also plague source characterisation assessment of chemical fate and transport in the environment, assessment of exposure risks and health effects, and remedial action performance. These factors make uncertainty an inherent feature of potentially contaminated sites. Technical uncertainties are characteristically several orders of magnitude greater at contaminated sites than for other kinds of projects. HLA's professional opinions are based upon its professional judgement, experience, and training. These opinions are also based upon data derived from the limited testing and analysis described in this report. It is possible that additional testing and analysis might produce different results and/or different opinions. HLA has limited its investigation to the scope agreed upon with its client. HLA believes that its opinions are reasonably supported by the testing and analysis that have been done, and that those opinions have been developed according to the professional standard of care for the environmental consulting profession in this area at this time. That standard of care may change and new methods and practices of exploration, testing and analysis may develop in the future, which might produce different results

Groundwater Investigation - Water Tower Tip ADI Mulwala

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CONTENTS

EXECUTIVE SUMMARY.................................................................................................................. ES1

1.0 INTRODUCTION........................................................................................................................ 1 1.1 General............................................................................................................................... 1 1.2 Objectives .......................................................................................................................... 1

2.0 SCOPE OF WORK...................................................................................................................... 2 3.0 BACKGROUND........................................................................................................................... 3

3.1 Site History ........................................................................................................................ 3 3.2 Previous Investigations and Findings ................................................................................ 3

4.0 SITE CONDITION AND SURROUNDING ENVIRONMENT.............................................. 5 4.1 Topography........................................................................................................................ 5 4.2 Condition of Site and Surrounding Area ........................................................................... 5 4.3 Proximity to Local Sensitive Environments ...................................................................... 5

5.0 GEOLOGY AND HYDROGEOLOGY ..................................................................................... 6 5.1 Regional Geology and Hydrogeology ............................................................................... 6 5.2 Site Geology ...................................................................................................................... 6 5.3 Site Hydrogeology............................................................................................................. 6

6.0 POTENTIAL CONTAMINANTS OF CONCERN IN GROUNDWATER............................ 7 7.0 SAMPLING AND ANALYSIS PLAN AND SAMPLING METHODOLOGY...................... 7

7.1 Sample Preservation and Transport ................................................................................... 8 7.2 Laboratory Analyses.......................................................................................................... 8

8.0 QUALITY ASSURANCE AND CONTROL ............................................................................. 9 8.1 Analytical Data Validation Methodology.......................................................................... 9 8.2 Analytical Data Validation Results ................................................................................... 9

8.2.1 Accuracy ............................................................................................................... 9 8.3 Overall Assessment of Analytical Data Quality .............................................................. 11

9.0 GROUNDWATER ASSESSMENT CRITERIA..................................................................... 12 9.1 Regulatory Framework .................................................................................................... 12 9.2 Beneficial Use of Groundwater ....................................................................................... 12 9.3 Adopted Assessment Criteria .......................................................................................... 13

10.0 RESULTS.................................................................................................................................... 15 10.1 Standing Water Levels..................................................................................................... 15 10.2 Groundwater Flow Direction........................................................................................... 15 10.3 Groundwater Monitoring................................................................................................. 15

10.3.1 Field Parameters ................................................................................................. 15


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10.3.2 Laboratory Results.............................................................................................. 15 11.0 DISCUSSION OF RESULTS.................................................................................................... 18 12.0 CONCLUSIONS AND RECOMMENDATIONS ................................................................... 19 13.0 REFERENCES........................................................................................................................... 20 TABLES Table 1. Groundwater Quality Field Parameters Table 2. Groundwater Analytical Summary FIGURES Figure 1. Site Location Figure 2. Site Map and Groundwater Contour Plan Figure 3. Piper Plot APPENDICES Appendix A. Field Logs Appendix B. Laboratory Analysis Reports and Chain of Custody Documentation


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EXECUTIVE SUMMARY The purpose of the HLA investigation was to assess the potential for groundwater contamination derived from the Water Tower tip. The investigation consisted of the installation, sampling and analysis of three groundwater monitoring bores within the bedrock aquifer at the Mulwala Water Tower Tip site.. The results of the investigation indicated: • Groundwater in the bedrock aquifer in the vicinity of the tip site flows from east to west.

• The recorded groundwater salinity levels in the vicinity of the tip site suggest that groundwater may be suitable for a range of beneficial uses including drinking water purposes.

• No concentrations of organic contaminants exceeded the adopted site criteria in all samples analysed.

• No concentrations of heavy metal contaminants (excluding zinc) exceeded the adopted site criteria. Although the zinc concentrations reported marginally exceeded the freshwater ecosystem criteria, the detection of zinc in the majority of the rinsate blank samples associated with the sampling from this investigation may indicate that the results reported represent laboratory background or contamination or interference.

• Several analytes including benzene, toluene and organic nitrogen were detected at concentrations relatively higher in BH81, which is inferred to be located hydraulically up-gradient of the tip site compared to bores BH82 and BH80, which are located across and down-hydraulic gradient of the tip area respectively. In addition, the heterotrophic plate count (HPC) count for bore BH81 was approximately 30 times higher than the consistent levels reported in bores BH80 and BH82.

• Consistent concentrations of ammonia were reported in all bores, however these levels are considered typical of groundwaters in the region (HLA, 2003).

• The groundwater samples collected were typically neutral and oxygenated, and therefore not considered indicative of groundwater affected by potential leachate from the landfill.

HLA considers that no significant groundwater impact was evident in the data obtained from the investigation, however the elevated organic nitrogen and elevated HPC concentrations detected in groundwater from the inferred upgradient bore warrants further monitoring and evaluation. Ongoing monitoring of the groundwater from all bores should also be undertaken to ensure the capping measures already implemented are effective in reducing the long term risk of aquifer degradation. Consideration should also be given to the installation and monitoring of a shallow leachate bore. The leachate bore should be installed to the base of the waste material and is recommended for the purposes of evaluating the nature of any leachate produced from the waste material.


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1.0 INTRODUCTION

1.1 General

HLA-Envirosciences Pty Limited (HLA) was engaged by ADI Limited (ADI) to undertake an investigation of groundwater in close proximity to the Mulwala Water Tower tip. The investigation comprised the installation of groundwater monitoring bores and the subsequent sampling and analysis of groundwater for a range of potential contaminants. The works were intended to assess the potential for groundwater contamination derived from the Water Tower tip. 1.2 Objectives

The investigation aims to assess any potential impacts the site may be having on groundwater located within the Silurian Bedrock underlying the former tip site. A perched watertable within fill material at the tip site has been identified in previous investigations, indicating the need for quantitative groundwater assessment given the potential for groundwater contamination of the underlying aquifer.

Installation of additional groundwater monitoring bores was undertaken in the area surrounding the former tip, one in an inferred up hydraulic gradient direction and two in an inferred down hydraulic gradient direction. The aim of the groundwater bores installation was to enable assessment of the potential for groundwater contamination of the underlying groundwater.


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2.0 SCOPE OF WORK

As part of the groundwater investigation, HLA undertook an assessment of groundwater within the Silurian bedrock aquifer at the site. Works associated with the investigation included: • A review of previous investigations pertaining to site use, deposition of waste materials and the

surrounding subsurface environment.

• Mobilisation to the site and the installation of three groundwater monitoring bores (BH80, BH81 and BH82), to a total depth of up to 45 m below ground level, screened within the Silurian Bedrock aquifer unit.

• Measurement of standing water levels (SWLs) in each monitoring bore to determine the direction of localised groundwater flow within the bedrock and to assess the potential for contaminant migration.

• The sampling and analysis of groundwater obtained from each monitoring bore for a suite of analytes, based on the recorded site history and reported nature of waste fill materials (as follows):

− Metals and metalloids (including: arsenic, cadmium, chromium, copper, lead, mercury, manganese, nickel, tin and zinc).

− Volatile and semivolatile organic compounds (VOCs and SVOCs), including D-ethyl ether, and ethanol.

− Various explosives, including RDX, tri-nitrotoluene (TNT), di-nitrotoluene (DNT), mono-nitrotoluene (MNT), and nitroglycerine.

− Bacteriological analytes, including total coliforms, total bacteria, and E.Coli.

− Various inorganic compounds and indicators of groundwater quality, including TDS, phosphate, nitrate, nitrite, sulphate, ammonia, organic nitrogen, TKN, ferrous and ferric iron.

− Total Organic Carbon (TOC), Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD)

− Major cations and anions (including: calcium, magnesium, sodium, potassium, carbonate, bicarbonate and chloride),

− Field geochemical parameters, including electrical conductivity, pH, dissolved oxygen, redox potential (Eh), and temperature.

• Laboratory analysis of samples using National Association of Testing Authorities (NATA)-registered methods.

• Preparation of a comprehensive report detailing the sampling and analysis methodologies used, review of the analytical results and conclusions regarding the potential impact of any groundwater contamination derived from the site.


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3.0 BACKGROUND

3.1 Site History

According to ADI (1992), the Water Tower tip comprises a former quarry that was operated by the Mulwala ADI Facility to provide road base material. ADI (1992) noted verbal reports that quarrying activities were restricted to an area directly north of the current water towers on site. According to ADI (1992), upon completion of quarrying activities the pit was used by the Mulwala ADI Facility and the local Council as a landfill for disposal of general rubbish. URS (2001) reported that most of the filling was believed to have occurred during the late 1970’s and early 1980’s, with tip operations completed between 1986 and 1987. The tip is located within the Water Tower Reserve on which, both old and new water towers currently service the local community and the ADI Facility. The reserve was landscaped by the local community for use as a recreational reserve and scenic view location, however is currently completely fenced to exclude public access based on the recommendations of URS (2001). 3.2 Previous Investigations and Findings

Several investigations have been conducted on the material contained within and around the Water Tower site. URS (2001) noted that the landfilling activities were uncontrolled. No liner appeared to have been used, with rubbish placed in layers directly on the quarried surface (up to 4.4 metres in depth) and covered with sandy soil. It was also noted that some of the refuse was reportedly burnt and compacted. Woodward-Clyde (1998) noted the Water Tower tip as being capped with between 0.5 and 1.0 metres of sandy topsoil and contained approximately 20,000m3 of wastes. Some perched water, from surface water infiltrations, was noted by ADI (1992) to occur in the fill materials at a depth of approximately 1.5 metres. ADI (1992) noted the filled waste materials in the tip included: • Old car parts.

• Building rubble including piping concrete blocks, asbestos pipe lagging and cement sheeting, wire, timber and iron sheeting.

• Burnt briquettes.

• Ash, including wood, paper and coal ash (up to 1.5 metres thick in the low lying area of the landfill to the east of the water tower).

• Metal swarf.

• Sulphur wastes.

• Coke and metallic slags.

• Household rubbish. The landfill was capped with a clay layer following the recommendations of URS (2001) in order to prevent exposure to contaminants identified in the investigations, reduce surface infiltration and manage stormwater runoff.


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A soil contamination investigation by ADI (1992) revealed that the waste material contained individual concentrations of sulphate, nitrate, lead and asbestos that were above the adopted acceptable guideline levels. The recorded pH of the waste materials was shown to range from 2.3 to 8.8. Further investigation of the site by URS (2001) revealed sulphate and nitrate concentrations both above adopted background levels and acceptable guideline levels (NEPM EIL) within the waste soils and natural surrounding soils. Soils with nitrate and sulphate concentrations above acceptable guideline values were restricted to the waste material itself and soils in close proximity to the tip area. Similarly, lead concentrations were found to be above background and guideline levels within both the waste material and soils in close proximity to the tip. The pH of surrounding soils was shown to vary between 4.5 and 9.3. Other potential contaminants of concern identified in these investigations included potassium, nitrocellulose, other heavy metals, petroleum hydrocarbons (TPH), BTEX compounds, PAH’s, PCB’s, OC and OP pesticides and explosive compounds (MNT, DNT, RDX and nitroglycerine). None of these contaminants were found to occur at concentrations above adopted background or adopted guideline levels. A groundwater bore (BH35) was previously installed in the vicinity of the Water Tank. This bore was however damaged during site operational activities and was redrilled in approximately the same location and renamed BH80 (refer to Figure 2). Previous assessment of BH35 for a number of groundwater contaminants was undertaken by URS, with nickel and total cyanide observed to be at concentrations exceeding the adopted site criteria (ANZECC guidelines for the protection of aquatic ecosystems).


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4.0 SITE CONDITION AND SURROUNDING ENVIRONMENT

4.1 Topography

The topographical map (Topographic Map Series 1:25,000 Gwynne Hill 8026-2-2 1985) shows the Water Tower Reserve located on a mounded hill approximately 1 km from Lake Mulwala. The hill rises approximately 25m above the surrounding plains to the north. The old and new water towers are located on the top of the hill upon a relatively flat rock plateau at an elevation of approximately 150m AHD. The land slopes away from the towers, most steeply to the north and east where progressive filling has created an uneven terrain (URS 2001). The southern and western slopes fall away towards the hummock type terrain of the land between the Water Tower hill and the Murray River flats. 4.2 Condition of Site and Surrounding Area

The Water Tower Reserve covers an area of approximately 6.3 ha and includes new and old water towers in addition to the former tip. Two water towers are located on the point of highest elevation in a central position on the site. The tip is located to the north east of the water towers and occupies approximately 1 ha within the site (as shown in Figure 2). The Water Tower tip is located within the Water Tower Reserve and is joined to the north by a parcel of Commonwealth land located east of Lucan St (refer to Figure 1). The site’s western boundary is formed by an area of open woodland covered by an established eucalypt forest. The Yarrawonga-Mulwala golf course adjoins the southern boundary of the site, a railway line runs along the reserve’s eastern edge. An unpaved roadway runs between the railway and perimeter fence along the eastern boundary and swings westward along the northern perimeter fence to join Bayley St adjacent to the site entrance. A natural rock road way enters the site from Lucan St near the northwestern corner of the reserve. The access track heads south east uphill towards the water towers before swinging to the north then west around the former tip’s perimeter. A stockpile of quarried material is located at the eastern edge of the former tip. The western half of the site is the most densely vegetated, with a covering of mature gum trees. The remaining site area is sparsely vegetated with native eucalypt woodland, whilst the recently capped tip is currently devoid of any notable surface vegetation. 4.3 Proximity to Local Sensitive Environments

Several sensitive environments exist within close proximity to site. Lake Mulwala is located less than 1 km to the east of the site, while a caravan/holiday park is currently located between the lake and railway line. The Murray River and Yarrawonga - Mulwala golf course are located to the south and southwest of the site, while an area of rural residential zoned properties are located further to the west. Service trenches leaving the site potentially provide a preferential pathway for contaminant (if present) migration from the site.


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5.0 GEOLOGY AND HYDROGEOLOGY

5.1 Regional Geology and Hydrogeology

The Mulwala/Yarrawonga region is located in the eastern extremities of the Riverine Plain within the Murray Basin. The regional geologic setting consists of a sequence of fluvial sediments ranging in age from Tertiary to Recent that unconformably overlie fractured Palaeozoic (Silurian) bedrock. The bedrock comprises slates, sandstones, siltstones and phyllites displaying various degrees of weathering at outcrop and within the subsurface (1:250,000 Jerilderie Hydrogeological Map, Dept of Water Resources, 1992). Mechanical and chemical weathering between the Silurian/Ordivician and Tertiary led to micro-valleys being incised into the bedrock surface. These valleys were then infilled by silts, sands and gravels of fluvial origin in the Tertiary and clays, clayey sands and discontinuous sands and gravels in the Quaternary to Recent periods. Regional groundwater movement is generally towards the west, but is highly variable at a local scale due to the influence of surface water bodies such as Lake Mulwala, the Mulwala Canal and the Murray River. In general terms, the region is a recharge area for the eastern segment of the Murray Basin although some lagoonal systems and rivers act as discharge points on a local scale. Interaction between the bedrock aquifer and the overlying alluvial units is not well documented, however it is thought that there is at least some minor hydraulic connection based on historical similarities of groundwater elevation. 5.2 Site Geology

The Water Tower hill is an outcrop of Silurian/Ordivician aged bedrock that has undergone moderate to heavy weathering at the surface and subsurface. Colluvial and weathered deposits overlie moderately to heavily weathered horizons of the bedrock that extend to several metres below the surface. During installation of BH80 to BH82 soft grey clays and large weathered quartz fragments were encountered at depths of up to 7m below the surface during drilling and were interpreted as palaeo-weathered surfaces (refer to Appendix A). Fresh interbedded siltstone and sandstones underlie these sediments from approximately 5.0 to 7.0m bgl (below ground level) to at least 48m bgl, the maximum depth of investigation. The consolidated siltstone and sandstone of varying strength is predominantly yellow, beige and grey in colour. Interbedded Ordivician and Silurian sediments of fluvial and lacustrine origin have been consolidated and form a bedrock high around which more recent alluvial sediments have been deposited. 5.3 Site Hydrogeology

Recharge to the groundwater system is controlled by infiltration through the surface profile, followed by movement to the watertable through fractures in the fresh siltstone and sandstone. Groundwater flow in the vicinity of the Water Tower Landfill occurs within the bedrock where permeability is governed by fractures throughout the profile. Groundwater within the bedrock aquifer is semi-confined to unconfined given that the fracture permeability provides rapid lateral and vertical groundwater migration pathways. It is likely that groundwater within the bedrock has minor hydraulic connection to the adjacent unconsolidated alluvial aquifers based on historical groundwater elevation data. Based on the HLA investigation activities, groundwater appears to be flowing to the west (refer to Figure 2).


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6.0 POTENTIAL CONTAMINANTS OF CONCERN IN GROUNDWATER

Based on HLA’s inspection of the property and the historical information reviewed to date, the primary source of potential groundwater contamination at the site is believed to arise from the disposal of waste materials within the former quarry. Groundwater contamination could potentially occur via the leaching of contaminants from miscellaneous wastes by both surface water infiltration and regional groundwater flow through the adjoining aquifer. The potential for contamination of groundwater has also been influenced by past landfilling practices at the tip site, including uncontrolled filling, incomplete capping of the landfill upon completion, no known use of a liner in the pit and no known leachate removal or mitigation systems. A wide range of contaminants resulting from a long history of uncontrolled waste filling may be present at the site (URS 2001). The following contaminants have been identified as potential groundwater contaminants of concern:

− Heavy metals including: arsenic, cadmium, chromium, copper, lead, mercury, manganese, nickel, tin and zinc.

− Volatile and semi-volatile organic compounds including: BTEX compounds, PAH’s, phenols, aromatic/aliphatic hydrocarbons.

− Explosive compounds, such as RDX, tri-nitrotoluene (TNT), di-nitrotoluene (DNT), mono-nitrotoluene (MNT), nitroglycerine.

− Organic matter from deposited waste (leading to biological activity).

− Organochlorine and organophosphate pesticides.

− D-ethyl ether, ethanol

− Inorganic chemicals including: phosphate, nitrate, nitrite, sulphate, ammonia, organic nitrogen, TKN, ferrous and ferric iron.

7.0 SAMPLING AND ANALYSIS PLAN AND SAMPLING

METHODOLOGY

The subsurface conditions at the site were assessed by a groundwater investigation conducted in accordance with the NEPM. The following table details the field investigation summary: The groundwater sampling and analysis program comprised:

• Three groundwater monitoring wells (BH80, BH81 and BH82), installed to approximately 3m below the static water level (SWL) using Class 18 threaded µPVC casing. Graded filter sand was added to approximately 0.5 metres above the top of the screened interval. A minimum 0.5 m hydrated bentonite seal was added above the filter media.

• Standing water levels were recorded for the three installed bores, BH-80, BH-81 and BH-82, in addition to an older bore located downgradient from the site, BH-24.

• The wells were developed prior to sampling by pumping that also removed accumulated sediment from the bottom of the well casing. Field parameters including temperature, electric conductivity (EC), pH, redox potential and dissolved oxygen (DO) were measured during groundwater purging and groundwater was sampled from the well using a new Waterra disposable pump once field parameters had stabilised between purging successive well volumes.


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• All drilling equipment was decontaminated using phosphate free detergents prior to use and between each bore location. Steel tapes, well sounders, transducers, and water quality probes were washed with detergent then rinsed in distilled and/or deionised water or wiped clean with paper towels after each use. Detailed lithological logs of the boreholes were completed in the field. Bore logs were completed in accordance with AS1726-1993 and other appropriate Australian and international standards.

• Soils were classified in accordance with the Unified Soil Classification System (USCS). Detailed inspection of soils from each borehole for the presence of anthropogenic material (i.e. ash, asbestos-cement sheeting etc) was undertaken. Copies of the borelogs detailing encountered lithology and bore construction details are presented within Appendix A.

7.1 Sample Preservation and Transport

The following sample handling procedures were implemented:

• Groundwater samples were carefully decanted into appropriately sized laboratory supplied containers with preservatives, if/as required by the analytical method. Samples for dissolved heavy metals were filtered in the field to 0.45 µm prior to acidic preservation.

• Samples were kept chilled and transported under chain of custody protocol to the analytical laboratory. Transport was by the HLA field representative and/or laboratory designated courier.

7.2 Laboratory Analyses

The analytical plan was developed to provide adequate coverage across the site and meet the objectives of the investigation. Australian Laboratory Services (ALS) of Clayton, Victoria undertook all primary chemical testing. ALS conducted all analyses in-house using NATA registered methods and a high level of laboratory QA/QC.


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8.0 QUALITY ASSURANCE AND CONTROL

8.1 Analytical Data Validation Methodology

The implementation of a number of specific quality assurance (QA) and quality control (QC) protocols was undertaken to ensure that both the quality and reliability of the data reported during HLA’s groundwater investigations was of an acceptable standard for interpretation. Specific QA protocols assessed for this project were predominantly concerned with sampling and analysis, including but not limited to:

• The use of appropriate sample collection and handling procedures;

• The use of suitably qualified personnel for the collection of samples using a consistent method;

• Decontamination of all field equipment during fieldwork before, after and between sampling events;

• Submission of samples to the laboratory under appropriate chain of custody (COC) protocols for analysis within appropriate holding times for the analyses requested; and

• Analysis of samples using methods accredited by the National Association of Testing Authorities (NATA).

Specific data quality objectives (DQOs) assessed for this project included both field and laboratory analytical methods, including, but not limited to:

• Extraction and analysis of samples within appropriate holding times;

• The collection and/or analysis of specific QC samples, including

− Equipment and rinsate blank samples (where applicable)

− Laboratory blank samples

− Laboratory duplicate samples

− Internal laboratory spiked samples and duplicate spiked samples (where applicable)

− Field duplicate samples

− Field triplicate samples 8.2 Analytical Data Validation Results

The overall assessment of the quality of the data obtained during the investigation is discussed below in terms of data quality objectives. 8.2.1 Accuracy

Sample Handling and Holding Times prior to Analysis All field samples were preserved and handled in accordance with the requirements outlined in the Workplan. Furthermore, the field and laboratory samples were analysed within the acceptable holding times with the exception of the following analytes:

• TDS

• Total phosphate, sulfate

• Nitrate as N, nitrite as N, ammonia


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• Organic nitrogen, TKN

• TOC, COD, BOD, iron (II and III)

• Total coliforms, total bacteria, E.coli However, given the distance from the site to the nearest analytical laboratory and the costs involved with delays between sampling and analysis it was not practical to alter the sampling methodology. With the exception of the holding time exceedences, the sample handling was considered acceptable to fulfil the requirements of the project. Laboratory Limits of Reporting It can be seen from the results that the limits of reporting (LORs) were consistent between both field and laboratory samples throughout the analytical program. Laboratory Duplicate Sample Analysis Laboratory duplicate samples were analysed at a rate of greater that 1 in 5 samples analysed by the laboratory. The RPDs between the laboratory duplicate samples were calculated to evaluate the accuracy of the analytical results. All laboratory duplicate RPDs were within the DQO and therefore considered to be sufficient to fulfil the requirements of the investigation.

Matrix Spike and Matrix Spike Duplicate Analysis Matrix spike and matrix spike duplicate samples were analysed at a rate of up to 20% of the samples analysed by the laboratory. The relative percentage differences (RPDs) between the matrix spike and matrix spike duplicate samples were calculated to evaluate the accuracy of the analytical results. Additionally, matrix spike recoveries compared to DQOs for an acceptable range of values. All matrix spike recovery ranges were within the defined DQOs Laboratory Control Sample Analysis A discussion of the results is presented below.

• An elevated RPD >30% was calculated between VSVOCW369SCS_EM14153-1 (23.2%) and VSVOCW369DCS_EM14153-1 (62.0%) for Aniline

• An elevated RPD >30% was calculated between VSVOCW369SCS_EM14153-1 (53.4%) and VSVOCW369DCS_EM14153-1 (76.8%) for N-Nitrosodi-n-propylamine

• An elevated RPD >30% was calculated between VSVOCW369SCS_EM14153-1 (7.0%) and VSVOCW369DCS_EM14153-1 (11.7%) for Pentachlorophenol

• An elevated RPD >30% was calculated between VVSCW256SCS_ EM14153-3 (113.5%) and VVSCW256SCS_ EM14153-3 (56.7%) for 1.2-Dibromo-3-chloropropane

With the exception of a number of individual chemicals reported in a number of laboratory control samples, the majority of the spike recoveries were assessed to be within the acceptable range.


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Surrogate Recoveries Surrogate chemicals were employed in the analysis of both semi-volatile and volatile organic compounds in the groundwater samples analysed by the laboratory. All surrogate recoveries fell within the acceptable range, with the exception of the following results:

• Toluene-D8 – METHODBLANK_EM14153-3 Based on the overall data set HLA, believe that the accuracy of the extraction and analysis techniques employed by the analytical laboratory, based on surrogate recoveries, are acceptable and representative of concentrations of the analysed compounds in groundwater samples analysed from the site. Rinsate Blank Sample Analysis Rinsate blank samples were collected at a rate of greater than 5 percent of the total number of field samples collected as part of monitoring over the greater site investigation. The majority of the rinsate blank samples analysed by the analytical laboratory did not return any results above the adopted LORs, with the exception of the following:

• RB01_7/5/02 collected from a disposable bailer and gloves (EM12739) – Zinc was detected at a concentration of 0.009 mg/L.

• RB02_16/10/02 collected from a disposable bailer and gloves (EM12739) – Zinc was detected at a concentration of 0.005 mg/L, mercury was detected at a concentration of 0.0003 mg/L.

• RB03_17/10/02 collected from a disposable bailer and gloves (EM12739) – Zinc was detected at a concentration of 0.003 mg/L.

• RB04_26/11/02 collected from a disposable bailer and gloves (EM12739) – Zinc was detected at a concentration of 0.009 mg/L, manganese was detected at a concentration of 0.002 mg/L.

• RB05_26/11/02 collected from a disposable bailer and gloves (EM12739) – Zinc was detected at a concentration of 0.008 mg/L, manganese was detected at a concentration of 0.002 mg/L.

• Typical minor concentrations of some inorganic parameters expected within purified water were detected in several rinsate blanks (ie. TDS, ammonia, Kjeldahl nitrogen, nitrate, nitrite, organic nitrogen, reactive phosphorus and heterotrophic bacteria).

Based on the results of the rinsate blank analysis it is recommended that the limits of reporting be adjusted to five times the highest contaminant concentration detected in the rinsate blank samples to reduce the potential reporting of false positive results in the field samples analysed as a result of cross contamination. Recommended limits of reporting are outlined as follows:

• Manganese – 0.01 mg/L

• Mercury – 0.0015 mg/L

• Zinc – 0.045 mg/L 8.3 Overall Assessment of Analytical Data Quality

Based on the data validation procedures undertaken, it has been assessed that the analytical laboratory data is of sufficient standard, accuracy and precision such that it both fulfils the objectives of the project and can be used to form the basis of interpretation for this investigation.


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9.0 GROUNDWATER ASSESSMENT CRITERIA

9.1 Regulatory Framework

The regulatory framework for the protection of groundwater quality throughout NSW is outlined in the NSW State Groundwater Policy Framework Document (1997). Protection of groundwater from pollution and the regulation of groundwater contamination and clean-up is enforced by the NSW EPA through components of the Protection of the Environment Operations (POEO) Act (1997) and the Contaminated Land Management (CLM) Act (1997). The management of groundwater resources and the identification of groundwater beneficial uses is regulated by the DLWC on a site specific basis under the provisions of the Water Management Act (2000). 9.2 Beneficial Use of Groundwater

As described above, potential beneficial uses of groundwater in NSW are identified on a site-specific basis by the DLWC. At present, no formalised policy on specific beneficial uses applicable for the aquifers in the Mulwala region has been adopted by the DLWC (pers. comms: HLA - Albury and Deniliquin DLWC offices). However, it is understood that the intent of the existing regulatory framework and associated groundwater protection policies is to maintain the full range of beneficial uses possible. In the absence of a formalised beneficial use assessment process for the protection of the aquifers in the Mulwala region, HLA have adopted the process described in Victoria Government Gazette State Environmental Protection Policy (SEPP) Groundwaters of Victoria (1997) for the determination of suitable indicators, objectives and ultimately concentration thresholds for the assessment of groundwater quality. The Groundwaters of Victoria SEPP process considers a number of aquifer properties to determine which potential beneficial uses apply, however, where aquifers are considered significant in terms of ecosystem support at the point of discharge or a potential or actual resource, beneficial use identification is ultimately based on TDS. Once the aquifer TDS has been determined, applicable beneficial uses are identified using the following matrix.

Aquifer Classification Based on Background TDS

Beneficial Uses Based on TDS Range (mg/L)

0 - 500 500 – 1,000 1,000 – 3,500 3,500 – 13,000 Greater than

13,000

Beneficial Uses Maintenance of Ecosystems

Potable Water Supply

Desirable Acceptable Potable Mineral Water Supply

Agriculture, Parks and Gardens

Stock Watering Industrial Water Use


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Beneficial Uses Based on TDS Range (mg/L)

0 - 500 500 – 1,000 1,000 – 3,500 3,500 – 13,000 Greater than

13,000

Beneficial Uses Primary Contact Recreation

Buildings & Structures

The TDS reported in the three bores installed in the bedrock aquifer in the vicinity of the tip site ranged from 604 mg/L to 2,930 mg/L. Beneficial uses considered to be potentially realised for this aquifer have therefore been conservatively selected from those identified for the 500 – 1,000 TDS range in the table above. This is highly conservative as the two fo the three samples tested were well above the drinking water criteria range. These include:

• Maintenance of ecosystems;

• Potable water supply;

• Potable mineral water supply;

• Agricultural water supply: irrigation;

• Agricultural water supply: stock watering;

• Industrial water use;

• Primary contact recreation;

• Buildings and structures. This range of beneficial uses identified through implementation of the Victorian EPA process are considered to represent all uses which may potentially be supported or realised by the aquifer investigated, with the exception of groundwater dependant ecosystems (GDEs). Without formalised indicators and objectives for GDEs, application of the freshwater ecosystems protection objectives has been adopted as a precaution. 9.3 Adopted Assessment Criteria

The levels of groundwater quality required to protect the applicable beneficial uses are specified by a range of groundwater quality indicators and objectives, which are predominantly based on the Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC & ARMCANZ, 2000), with the following exceptions:

• Drinking Water Supply – criteria are adopted from the Australian Drinking Water Guidelines (NHMRC & ARMCANZ, 1996);

• GDEs – no specific criteria are currently available for the protection of GDE. The aquatic freshwater ecosystems criteria in ANZECC & ARMCANZ (2000) are adopted by default as a precautionary measure for the protection of GDEs, however it is acknowledged that future studies may indicate that the aquatic ecosystem protection criteria may, or may not provide sufficient protection for aquifer ecosystems;

• Buildings and structures –no criteria have been referenced for this investigation due to the high depth to groundwater.


D0060/1/R201-a 14 21 February 2003

Industrial water use criteria have not been adopted for the investigation on the basis that the AWQG lists very specific industrial processes, which may or may not be applicable to the future use of the site. Where comparative industrial criteria are not available, the guidelines default to drinking water guidelines, which are already included as part of other beneficial use criteria. The final groundwater criteria adopted for this investigation (freshwater ecosystem protection and drinking water criteria) have been appended to the tables of analytical results (where available) for comparison.


D0060/1/R201-a 15 21 February 2003

10.0 RESULTS

10.1 Standing Water Levels

Standing Water levels (SWLs) and total bore depths for the monitoring activities are presented within Table 1. Groundwater SWLs were measured from the top of the PVC casing (BTOC). 10.2 Groundwater Flow Direction

As discussed in Section 5.3, regional groundwater flow beneath the site is believed to be towards the west, however localised groundwater flow influences may exist. As such, BH80 and BH82 were located in a position considered to be down hydraulic gradient of the tip whilst BH81 was considered up hydraulic gradient (refer to Figure 2). The existing bore groundwater bore (BH24) was also believed to be located down hydraulic gradient of the tip site. The groundwater levels for BH80, BH81, BH82 and BH24 and inferred groundwater contours are shown on Figure 2. They indicate that generalised groundwater flow within the fractured bedrock is from east to west, effectively the same as that of the adjacent alluvial aquifers. There is insufficient data at present to rule out any localised mounding or depression of groundwater evident as a result of the water tower hill, excavations or due to other localised geological features. 10.3 Groundwater Monitoring

10.3.1 Field Parameters

Field parameters characterising local groundwater conditions measured during the monitoring program are presented within in Table 2. • pH - The pH of the groundwater is predominantly neutral and ranged from 6.82 to 6.98 pH units

(BH80 and BH81 respectively).

• Electrical Conductivity (EC) - The conductivity results for the monitoring year ranged from 811 µS/cm (BH81) to 5050 µS/cm (BH82).

• Redox Potential - Redox potential in groundwater samples ranged from 111 mV (BH81) to 178 mV (BH82) indicating that the groundwater is in an oxidising state.

• Dissolved Oxygen - Dissolved oxygen concentrations were recorded as ranging from 2.99mg/L (BH80) to 8.12 mg/L (BH81) and groundwater is considered mildly oxygenated.

10.3.2 Laboratory Results

The results of the laboratory analysis of groundwater are compared against the adopted assessment criteria in Table 2. Laboratory analytical reports and the chain of custody documentation are provided in Appendix B. Organic Contaminants, Pesticides and Explosives Concentrations of volatile and semi-volatile organic contaminants, OC pesticides and explosives were below both laboratory detection limits and the adopted site criteria for the majority of analytes tested. Toluene was detected in BH81 (0.003mg/l) however is marginally above laboratory detection limits and below the adopted site criteria.


D0060/1/R201-a 16 21 February 2003

A small number of hydrocarbon and pesticide analytes had detection limits marginally above the adopted site criteria (such as Aldrin, Dieldrin, DDT, benzo(a)pyrene, pentachlorophenol etc - refer to Tables), although where this occurred (refer to Tables), no analyte concentrations were actually detected. Consideration should be given to lowering detection limits on these samples in future testing should be made if further information regarding source materials suggests contaminants are actively present at the site. Heavy Metals Elevated levels of metals exceeding both laboratory detection limits and the ANZECC guideline trigger values for Freshwaters were restricted to zinc (0.009mg/l recorded in both BH80 and BH82). The concentrations of all other metal analytes were below laboratory detection limits (although it should be noted the laboratory detection limits for cadmium, chromium and mercury were slightly above the ANZECC values for Freshwater). The concentration of dissolved metals in all groundwater samples was below the ANZECC Freshwater ecosystem protection, stockwater and irrigation guideline levels. The previous assessment (URS, 2001) encountered nickel concentrations in BH35 of 0.004mg/l. This detection was not repeated in this assessment, with nickel concentration in all groundwater samples obtained below the laboratory detection limit of 0.001mg/l. Nitrogen, Sulphur & Phosphorous Compounds Concentrations of ammonia were consistent across the site, with 0.05 to 0.06mg/l recorded in BH80 to BH82. The levels encountered exceed the Primary Contact Recreation values (0.01 mg/L) but not the Fresh Water Ecosystem Protection, Stockwater or Irrigation assessment guidelines. These levels of ammonia are consistent with background values across the region and could not be directly attributed to the landfill or waste operations without further assessment. Concentrations of nitrate (maximum 0.49mg/l in BH82) and sulphate (maximum 206mg/l in BH82) were both below the Primary Contact Recreation guidelines. Concentrations of phosphorous in groundwater analysed ranged from 0.37mg/l (BH82) to 7.58mg/l (BH81). The concentration of phosphorous in BH81 is thought to exceed that across the rest of the Mulwala ADI site, and be significantly above background levels. TDS TDS concentrations were recorded as 604 mg/L (BH81 - assumed upgradient), 1370 mg/L (BH80) and 2930 mg/L (BH82). As shown, groundwater TDS is variable. Ongoing monitoring is recommended to assess any trends and to determine potential mechanisms for TDS variation (if any), including the increase in TDS from BH81 to BH80 and BH82. Cations and Anions Major anions & cations were detected at the following concentrations within groundwater from the bores:

• Bicarbonate: ranged from 120 mg/L (BH81) to 360 mg/L (MB82).

• Chloride: ranged from 183 mg/L (BH81) to 1340 mg/L (MB82).

• Sulphate: ranged from 29 mg/L (BH81) to 206 mg/L (MB82).

• Magnesium: ranged from 15mg/L (BH81) to 99mg/L (MB82).


D0060/1/R201-a 17 21 February 2003

• Potassium: ranged from 2mg/L (BH80) to 7 mg/L (MB82).

• Sodium: ranged from 135 mg/L (BH81) to 826 mg/L (MB82). Concentrations of cations and anions were all observed to be greatest in BH82, while significantly lower levels were encountered in BH80 and BH81. Figure 3 presents these major cation and anion data obtained from the groundwater monitoring bores on a Piper Trilinear Plot. These plots allow a comparison of data on a percent milliequivalents basis, and suggest that the groundwater is predominantly sodium/chloride dominant. Biological Activity Examination of biological parameters indicates that BH80 developed significantly more coliforms than either BH81 or BH82, while BH81 developed more heterotrophic bacteria than BH80 and BH82. The evidence of coliforms in BH80 does not specifically indicate faecal matter, evidenced by the fact that no E. Coli was present in any of the groundwater samples analysed. The levels of organic carbon were below laboratory detection limits in each of the samples analysed, whilst no particular trends were observed in the chemical oxygen demand (COD) or biochemical oxygen demand (BOD) analyses.


D0060/1/R201-a 18 21 February 2003

11.0 DISCUSSION OF RESULTS

The up hydraulic gradient bore at the site is BH81 whilst BH80 and BH82 are located down hydraulic gradient. The overall trend of water moving through the bedrock material towards the west is observed, however the possibility exists that localised groundwater mounding or depression (and variations in localised flow regimes) may occur that has not been encountered within this assessment. The results of the analytical assessment conducted by HLA at the site indicate the following overall trends:

• The recorded TDS levels in the vicinity of the tip site suggest that groundwater may be suitable for a range of beneficial uses including drinking water purposes. The TDS recorded in BH81 was the only bore in the drinking water range indicating that drinking water use would be highly unlikely for groundwater at this site, the drinking water criteria was adopted only for the purposes of this assessment..

• No concentrations of organic contaminants exceeded the adopted site criteria in all samples analysed.

• No concentrations of heavy metal contaminants (excluding zinc) exceeded the adopted site criteria. Although the zinc concentrations reported marginally exceeded the freshwater ecosystem criteria, the detection of zinc in the majority of the rinsate blank samples associated with the sampling from this investigation may indicate that the results reported represent laboratory background or contamination or interference.

• Several analytes including benzene, toluene and organic nitrogen were detected at concentrations relatively higher in BH81, which is inferred to be located hydraulically up-gradient of the tip site compared to bores BH82 and BH80, which are located across and down-hydraulic gradient of the tip area respectively. In addition, the heterotrophic plate count (HPC) count for bore BH81 was approximately 30 times higher than the consistent levels reported in bores BH80 and BH82.

• Consistent concentrations of ammonia were reported in all bores, however these levels are considered typical of groundwaters in the region (HLA, 2003).

• Proportions of cations and anions indicate that the groundwater chemistry was relatively dominated by chloride and sodium, which is consistent in both the up and downgradient monitoring bores.

• The groundwater samples collected were typically neutral and oxygenated, and therefore not considered indicative of groundwater affected by potential leachate from the waste landfill.


D0060/1/R201-a 19 21 February 2003

12.0 CONCLUSIONS AND RECOMMENDATIONS

HLA undertook a groundwater investigation consisting of the installation of three groundwater monitoring bores within the bedrock aquifer at the Mulwala Water Tower Tip site. The bores were advanced to approximately 40 metres below ground level and samples collected and analysed for a range of potential contaminants and groundwater quality indicators in order to assess groundwater conditions within the bedrock aquifer beneath and surrounding the water tower tip site. HLA considers that no significant groundwater impact is evident in the data obtained from the investigation, however the elevated organic nitrogen and elevated HPC concentrations detected in groundwater from the inferred upgradient bore warrants further monitoring and evaluation. Ongoing monitoring of the groundwater from all bores should also be undertaken to ensure the capping measures already implemented are effective in reducing the long term risk of aquifer degradation. Consideration should also be given to the installation and monitoring of a shallow leachate bore. The leachate bore should be installed to the base of the waste material and is recommended for the purposes of evaluating the nature of any leachate produced from the waste material.


D0060/1/R201-a 20 21 February 2003

13.0 REFERENCES

Australian and New Zealand Environment and Conservation Council (ANZECC, August 1996), Guidelines for the Laboratory Analysis of Contaminated Soils. NEPC (1999) National Environmental Protection Measure (Assessment of Site Contamination). National Environment Protection Council, HLA (2003) Draft Groundwater Investigation Report, ADI Mulwala Imray, P. And Langley, A. (1996), Health-Based Soil Investigation Levels. National Environmental Health Forum Monographs, Soil Series No 1. South Australia Health Commission, Adelaide. URS (2001) Environmental Site Assessment, ADI Mulwala

TABLES

Table 1 Page 1 of 1

Table 1 Groundwater Quality Field Parameters

Project D0060 / 1 MULWALA

Bore ID

Total Well

Depth (∗ mBTOC)

Standing

Water Level (∗ mBTOC)

Standing

Water Level (*mAHD)

Purged

Volume (L)

pH

(pH units)

Conductivity

(µS/cm)

Temperature

(°C)

Dissolved Oxygen (mg/L)

Redox

Potential (Eh)

Odour

Colour

BH80 48.0 26.68 120.157 150 6.82 1018 18.6 2.99 152 none Light brown, slightly silty

BH81 42.0 19.36 120.386 62 6.98 811 17.3 8.12 111 none Cloudy, light brown

BH82 36.0 21.37 120.263 112 6.83 5050 20.1 3.94 178 none Slightly

cloudy

∗ mBTOC- Metre Below Top Of PVC Casing

Table 2Groundwater Analysis Summary

Project D0060 / 1MULWALA

Analyte Units AN

ZE

CC

200

0 St

ockw

ater

AN

ZEC

C 2

000

Irri

gatio

n

AN

ZEC

C 2

000

Trig

ger V

alue

s for

Fre

shw

ater

AN

ZEC

C 2

000

Rec

reat

iona

l - P

rim

ary

Con

tact

BH

80_1

7/10

/02

BH

81_1

7/10

/02

BH

82_1

7/10

/02

AGGREGATE ORGANICSBOD MG/L 8 7 8COD MG/L 96 112 88TOC MG/L <1 <1 <1GENERAL - BIOLOGICALColiforms by Colilert ORGS/100ML 5200 640 390Coliforms by MPN ORGS/100ML - - -E.coli by Colilert ORGS/100ML <10 <10 <10E.coli by MPN ORGS/100ML - - -Heterotrophic Plate Count (37'C/48hrs) CFU/ML 3100 100000 3600GENERAL - PHYSICALTDS MG/L 2000 1000 1370 604 2930INORGANICAmmonia as N MG/L 0.9 0.05 0.06 0.06Ferric Iron MG/L <0.1 <0.1 <0.1Ferrous Iron MG/L <0.1 <0.1 <0.1Kjeldahl Nitrogen MG/L 1 12.9 0.4Nitrate as NO3 MG/L 400 5 44.3 0.31 0.31 0.49Nitrite as N MG/L 30 0.7 1 0.03 0.03 0.05Organic Nitrogen as N MG/L 0.9 12.8 0.3Reactive Phosphorus as P MG/L 0.05 3.15 7.58 0.37MAJOR IONS - ANIONSBicarbonate as CaCO3 MG/L 126 120 360Chloride MG/L 400 161 183 1340Sulphate MG/L 1000 400 70 29 206MAJOR IONS - CATIONSMagnesium MG/L 20 15 99Potassium MG/L 2 5 7Sodium MG/L 300 148 135 826METALSArsenic MG/L 0.5 0.1 0.05 <0.001 <0.001 <0.001Cadmium MG/L 0.01 0.01 0.0002 0.005 <0.001 <0.001 <0.001Chromium MG/L 1 1 0.001 0.05 <0.001 <0.001 <0.001Copper MG/L 0.4 0.2 0.0014 1 <0.001 <0.001 <0.001Lead MG/L 0.1 0.2 0.0034 0.05 0.002 <0.001 0.001Manganese MG/L 2 1.9 0.1 0.026 0.055 0.019Mercury MG/L 0.002 0.002 0.00006 0.001 <0.0001 <0.0001 <0.0001Nickel MG/L 1 0.2 0.011 0.1 <0.001 <0.001 <0.001Zinc MG/L 20 2 0.008 5 0.009 0.005 0.009

SVOC - EXPLOSIVE COMPOUNDS2.4-Dinitrotoluene UG/L 16 <20 <20 <20

Table 2



Analyte Units AN

ZE

CC

200

0 St

ockw

ater

AN

ZEC

C 2

000

Irri

gatio

n

AN

ZEC

C 2

000

Trig

ger V

alue

s for

Fre

shw

ater

AN

ZEC

C 2

000

Rec

reat

iona

l - P

rim

ary

Con

tact

BH

80_1

7/10

/02

BH

81_1

7/10

/02

BH

82_1

7/10

/02

SVOC - ORGANOCHLORINE PESTICIDESAldrin UG/L 0.01 1 <2 <2 <2DDT UG/L 0.06 0.006 3 <4 <4 <4Dieldrin UG/L 0.01 1 <2 <2 <2Endrin UG/L 0.01 1 <2 <2 <2Heptachlor UG/L 0.05 0.01 3 <2 <2 <2SVOC - ORGANOPHOSPHORUS PESTICIDESChlorpyrifos UG/L 0.01 2 <2 <2 <2Diazinon UG/L 1 0.01 10 <2 <2 <2Dimethoate UG/L 0.15 100 <2 <2 <2Malathion UG/L 0.05 <2 <2 <2Pirimiphos ethyl UG/L 1 <2 <2 <2SVOC - PHENOLS2.4.5-Trichlorophenol UG/L 0.05 1 <2 <2 <24-Methylphenol UG/L <2 <2 <2Pentachlorophenol UG/L 3.6 10 <4 <4 <4SVOC - PHTHALATE ESTERSDi-n-butyl phthalate UG/L <2 2 <2SVOC - POLYAROMATIC HYDROCARBONSBenzo(a)pyrene UG/L 0.01 0.01 <2 <2 <2VOC - ALCOHOLSEthanol UG/L 1400 <50 <50 <50VOC - BTEXToluene UG/L 800 <2 3 <2VOC - HALOGENATED ALIPHATIC HYDROCARBONS1.1-Dichloroethene UG/L 30 0.3 <1 <1 <1VOC - SULFONATED COMPOUNDSCarbon disulfide UG/L <1 <1 <1

Table 2



Analyte Units Dri

nkin

g - H

ealth

Drin

king

- A

esth

etic

BH

80_1

7/10

/02

BH

81_1

7/10

/02

BH

82_1

7/10

/02

AGGREGATE ORGANICSBOD MG/L 8 7 8COD MG/L 96 112 88TOC MG/L <1 <1 <1GENERAL - BIOLOGICALColiforms by Colilert ORGS/100ML 5200 640 390Coliforms by MPN ORGS/100ML - - -E.coli by Colilert ORGS/100ML <10 <10 <10E.coli by MPN ORGS/100ML - - -Heterotrophic Plate Count (37'C/48hrs) CFU/ML 3100 100000 3600GENERAL - PHYSICALTDS MG/L 500 1370 604 2930INORGANICAmmonia as N MG/L 0.5 0.05 0.06 0.06Ferric Iron MG/L <0.1 <0.1 <0.1Ferrous Iron MG/L <0.1 <0.1 <0.1Kjeldahl Nitrogen MG/L 1 12.9 0.4Nitrate as N MG/L 0.07 0.07 0.11Nitrate as NO3 MG/L 50 0.31 0.31 0.49Organic Nitrogen as N MG/L 0.9 12.8 0.3Reactive Phosphorus as P MG/L 3.15 7.58 0.37MAJOR IONS - ANIONSBicarbonate as CaCO3 MG/L 126 120 360Chloride MG/L 250 161 183 1340Sulphate MG/L 500 250 70 29 206MAJOR IONS - CATIONSCalcium MG/L 7 5 23Magnesium MG/L 20 15 99Potassium MG/L 2 5 7Sodium MG/L 180 148 135 826METALSArsenic MG/L 0.007 <0.001 <0.001 <0.001Chromium MG/L <0.001 <0.001 <0.001Lead MG/L 0.01 0.002 <0.001 0.001Manganese MG/L 0.5 0.1 0.026 0.055 0.019Nickel MG/L 0.02 <0.001 <0.001 <0.001SVOC - CHLORINATED HYDROCARBONS1.2-Dichlorobenzene UG/L 1500 1 <2 <2 <21.4-Dichlorobenzene UG/L 40 0.3 <2 <2 <2Hexachlorobutadiene UG/L 0.7 <2 <2 <2SVOC - ORGANOCHLORINE PESTICIDESDieldrin UG/L 0.3 <2 <2 <2Heptachlor UG/L 0.3 <2 <2 <2Heptachlor epoxide UG/L 0.3 <2 <2 <2SVOC - ORGANOPHOSPHORUS PESTICIDESDichlorvos UG/L 1 <2 <2 <2Pirimiphos ethyl UG/L 0.5 <2 <2 <2

Table 2 (cont.)



Analyte Units Dri

nkin

g - H

ealth

Drin

king

- A

esth

etic

BH

80_1

7/10

/02

BH

81_1

7/10

/02

BH

82_1

7/10

/02

SVOC - PHENOLS2.4.6-Trichlorophenol UG/L 20 2 <2 <2 <22.4-Dichlorophenol UG/L 200 0.3 <2 <2 <22-Chlorophenol UG/L 300 0.1 <2 <2 <24-Methylphenol UG/L <2 <2 <2SVOC - PHTHALATE ESTERSDi-n-butyl phthalate UG/L <2 2 <2SVOC - POLYAROMATIC HYDROCARBONSBenzo(a)pyrene UG/L 0.01 <2 <2 <2VOC - BTEXBenzene UG/L 1 <1 1 <1VOC - HALOGENATED ALIPHATIC HYDROCARBONSHexachlorobutadiene UG/L 0.7 <2 <2 <2Vinyl chloride UG/L 0.3 <10 <10 <10VOC - HALOGENATED AROMATIC HYDROCARBONS1.2-Dichlorobenzene UG/L 1500 1 <2 <2 <21.4-Dichlorobenzene UG/L 40 0.3 <2 <2 <2VOC - SULFONATED COMPOUNDSCarbon disulfide UG/L <1 <1 <1

Table 2 (cont.)

FIGURES

N

0 1000500

Approximate Scale (metres)

REVISED DATEDATEAPPROVEDPROJECT-FILE NUMBERDRAWN

46 Clarendon Street

South Melbourne VIC 3205

Ph: 03 8699 2199

Fax: 03 8699 2122

HLA-Envirosciences Pty Limited FIGURE

1

19 Feb 2003

SITE

ADI Limited

Mulwala

AH D0060

Source: Department of Crown Lands and Survey (1985)

Watertower Tip InvestigationLocation Plan

A

A

A

A

BH82120.263

BH81120.386

BH80120.157

BH24120.120

120.15 120.20 120.25

120.

30

120.

350 30 60 90 12015

MetersIFIGUREHLA - Envirosciences Pty Limited

46 Clarendon StreetSouth Melbourne, VIC, 3205Ph (03) 8699 2199Fax (03) 8699 2122

WATERTOWER TIP INVESTIGATIONSITE PLANWest of the Former Sulphate DumpADI Mulwala 2HLA

APPROVED DATE04/11/2002

REVISED DATEDRAWN PROJECT-FILE NUMBERD0060

Legend

Bore Location

Site Features Plan

A

Water Tanks

Banked Area

Landfill Footprint

1m Contours

Inferred Goundwater Contours m(AHD)

Bore IDGoundwater Elevation m(AHD)

BH81120.386

120.30

APPROVED

HLA-Envirosciences Pty Limited

DRAWN

South Melbourne, 3205Ph. (03) 8699 2199

Fax (03) 8699 2122

46 Clarendon Street

PROJECT-FILE NUMBER DATE REVISED DATE

PIPER PLOT

ADI Limited

Mulwala

D0060

321-Feb- 03

FIGURE

FM

APPENDICIES

Appendix A

Field Logs

SANDSTONE to SILTSTONE, yellow/grey/beige,white mottling, heavily weathered, low strength,dry.

SANDSTONE, yellow/beige, low strength, traceangular sand grains, dry.

Trace soft grey clay.

Increased yellow colouring.

Slightly softer, trace light brown colouring, low tohigh strength bands.

SANDSTONE and SILTSTONE, yellow/beige/grey,low to high strength bands, dry.

1.00

9.00

10.00

LITHOLOGIC DESCRIPTION

REC

OVE

RY

SAM

PLE

NU

MBE

R

WELL DIAGRAM

ANAL

YSED

BLO

WC

OU

NTS

PID

(ppm

)

GR

APH

ICLO

G

DEP

TH(m

BG

L)

CO

NTA

CT

DEP

TH

DRILLING METHOD

LOGGED BY

Air HammerSAMPLING METHOD

146.837 mGreg Luke

WELL HEAD/TOCSURFACE ELEVATION

Grab146.22 m

COMMENTS Water Tower Tip

SCREEN0-42

42-4838-48

26.06 m

GRAVEL PACKSANITARY SEAL/BENTONITESTABILISED WATER LEVELGROUND WATER ELEVATION

BLANK

120.16 m

PAGE 1 OF 5

ADI Limited MulwalaMulwala NSW

1

2

3

4

5

6

7

8

9

HLA Envirosciences305 Queensberry StNorth Melbourne. VIC. 3051Telephone: 03 9328 5533Fax: 03 9328 5544

PROJECT NUMBERPROJECT NAMELOCATION

D0060/1

BORING / WELL CONSTRUCTION LOG BH 80

DATE 30/09/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, grey/light yellow, high strength, dry.

SILTSTONE and SANDSTONE, light grey/beige,moderate strength, dry.

Yellow to pale white colouring, low strength.

SILTSTONE, white/grey/yellow, orange-brownmottling, low strength, dry.

Grey/yellow/light brown/beige colouring.

SANDSTONE, grey/yellow/beige, low to moderatestrength, large angular quartz grains, dry.

Backfill

11.00

13.00

17.00

GROUND WATER ELEVATION 120.16 m- Continued from Previous Page -


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High strength.

Trace quartz fragments.

SILTSTONE and SANDSTONE, grey/beige, highstrength, quartz fragments, dry.

SILTSTONE and SANDSTONE, creamy white, lowstrength, moist.

SILTSTONE and SANDSTONE, light brown/beige,low to moderate strength, trace angular quartzfragments, moist.

SANDSTONE, yellow/lightbrown/orange-brown/grey, moderate strength,moist.

SILTSTONE, beige/grey/light brown, low strength,moist.

SANDSTONE, yellow/light brown/grey, moderateto high strength, moist.

50mm class 12uPVC blankcasing

24.00

25.00

26.00

28.00

30.00

31.00

32.00



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SANDSTONE, yellow/beige, high strength, moist.

SANDSTONE, pale yellow/beige, low strength,moist.

SANDSTONE, light brown/grey/beige, lowstrength, moist.

SANDSTONE, orange-brown/yellow-brown/grey,high strength, moist.

SANDSTONE, orange-brown/yellow-brown/grey,high strength, moist.

Orange-brown colour only.

SANDSTONE, pale grey/beige/light brown, low tomoderate strength, moist.

Becoming high strength.

SANDSTONE, yellow-brown/orange-brown/grey,high strength, moist

34.00

35.00

36.00

37.00

39.00

42.00

43.00



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11/

04/0

3

SANDSTONE, yellow brown/light brown, low tomoderate strength, moist.

Water bearing.

Total Depth: 48.00 m

Filter Pack

50mm class 12factory slotteduPVC casing

48.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

WC

OU

NTS

PID

(ppm

)

GR

APH

ICLO

G

DEP

TH(m

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L)

CO

NTA

CT

DEP

TH

PAGE 5 OF 5


44

45

46

47

48



D0060/1


DATE 30/09/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, pale yellow/orange-brown/brown,dry.

CLAY [C], mottled orange-brown/grey, soft, dry.

SILTSTONE, pale yellow/grey, moderate strength,dry.

SILTSTONE, light brown/orange-brown/grey,moderate strength, dry.

SANDSTONE, pale yellow/orange-brown, lowstrength, dry.

SILTSTONE, mottled light brown/orange-brown/grey, moderate strength, dry.

Increasing orange-brown/pale grey colour.

1.00

2.00

5.00

6.00

7.00

9.00


REC

OVE

RY

SAM

PLE

NU

MBE

R

WELL DIAGRAM

ANAL

YSED

BLO

WC

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NTS

PID

(ppm

)

GR

APH

ICLO

G

DEP

TH(m

BG

L)

CO

NTA

CT

DEP

TH

DRILLING METHOD

LOGGED BY

Air RotarySAMPLING METHOD

139.745 mGreg Luke


Grab139.19 m


SCREEN0-36

36-4230-42

28-3018.80 m


BLANK

120.39 m

PAGE 1 OF 5


1

2

3

4

5

6

7

8



D0060/1


DATE 01/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, pale yellow/orange-brown,moderate strength, dry.

SILTSTONE, mottled grey/orange-brown,moderate strength, dry.

SANDSTONE, orange-brown/yellow, low strength,dry.

Increasing pale grey colour.

Increasing orange-brown/yellow colour.

SILTSTONE, mottled orange-brown/grey, lowstrength, dry.

50mm class 12uPVC blankcasingBackfill

10.00

12.00

18.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

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)

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PAGE 2 OF 5


10

11

12

13

14

15

16

17

18



D0060/1


DATE 01/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SILTSTONE and SANDSTONE, paleyellow/orange-brown, low strength, dry.

Trace mottled grey/brown colour, moderatestrength.

SILTSTONE and SANDSTONE, palegrey/orange-brown, moderate strength, dry.

SANDSTONE, pale yellow/orange-brown, lowstrength, dry.

Moderate strength.

SILTSTONE, mottled palegrey/brown/orange-brown, low strength, dry.

19.00

22.00

24.00

28.00



REC

OVE

RY

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NU

MBE

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ANAL

YSED

BLO

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(ppm

)

GR

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TH(m

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CO

NTA

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TH

PAGE 3 OF 5


19

20

21

22

23

24

25

26

27

28



D0060/1


DATE 01/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SILTSTONE, mottled palegrey/brown/orange-brown, low strength, dry.(Continued)

SILTSTONE and SANDSTONE, mottledorange-brown/grey, low strength, moist.

SILTSTONE, mottled red-brown/grey, moderatestrength, moist.

Pale grey colour.

Bentonite Seal

Filter Pack

30.00

32.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

WC

OU

NTS

PID

(ppm

)

GR

APH

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TH(m

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PAGE 4 OF 5


29

30

31

32

33

34

35

36

37

38



D0060/1


DATE 01/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, mottled orange-brown/red brown/pale yellow, low strength, moist.

SANDSTONE, yellow/orange-brown, low strength,moist.



39.00

40.00

42.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

WC

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PID

(ppm

)

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PAGE 5 OF 5


39

40

41

42



D0060/1


DATE 01/10/2002

BOR

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ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, pale yellow/grey, low strength, largequartz fragments, heavily weathered, dry.

SANDSTONE, orange-brown/pale yellow, low tomoderate strength, less quartz fragments thanabove, dry.

Trace grey consolidated clay nodules, remnantlarge quartz fragments.

SANDSTONE, pale yellow, low to moderatestrength, dry.

4.00

9.00


REC

OVE

RY

SAM

PLE

NU

MBE

R

WELL DIAGRAM

ANAL

YSED

BLO

WC

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NTS

PID

(ppm

)

GR

APH

ICLO

G

DEP

TH(m

BG

L)

CO

NTA

CT

DEP

TH

DRILLING METHOD

LOGGED BY

Air RotarySAMPLING METHOD

141.633 mGreg Luke


Grab140.98 m


SCREEN0-30

30-3625-36

21-2520.72 m


BLANK

120.26 m

PAGE 1 OF 4


1

2

3

4

5

6

7

8

9



D0060/1


DATE 02/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, pale yellow, low to moderatestrength, dry. (Continued)

SANDSTONE, orange-brown/pale yellow, low tomoderate strength, dry.

Trace pale grey colour.

Trace quartz fragments.

backfill

50mm class 12uPVC blankcasing

12.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

WC

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(ppm

)

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PAGE 2 OF 4


11

12

13

14

15

16

17

18

19

20



D0060/1


DATE 02/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE, pale yellow/orange-brown, lowstrength, moist

Increasing orange-brown colouring.

bentonite seal

filter pack

24.00

31.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

YSED

BLO

WC

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NTS

PID

(ppm

)

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PAGE 3 OF 4


22

23

24

25

26

27

28

29

30

31



D0060/1


DATE 02/10/2002

BOR

ING

/ W

ELL

CO

NST

RU

CTI

ON

LO

G B

LOG

S.G

PJ H

LA_S

YD.G

DT

11/

04/0

3

SANDSTONE and MUDSTONE,orange-brown/yellow sandstone and brownmudstone, low strength, water bearing.

Trace grey and black SILTSTONE. (Continued)

SANDSTONE, light brown, low strength, waterbearing.



34.00

36.00



REC

OVE

RY

SAM

PLE

NU

MBE

RWELL DIAGRAM

ANAL

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BLO

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PAGE 4 OF 4


33

34

35

36



D0060/1


DATE 02/10/2002

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11/

04/0

3

Appendix B

Laboratory Analysis Reports and Chain of Custody Documentation

Australian Laboratory Services Pty Ltd (ABN 84 009 936 029) ofPage

LABORATORIES

AUSTRALASIA AMERICAS

Brisbane Hong Kong VancouverMelbourne Singapore SantiagoSydney Kuala Lumpar AntofagastaNewcastle Auckland LimaMumbai Bogor NATA Accredited Laboratory Number 825

1 26

CERTIFICATE OF ANALYSIS

Batch:Sub Batch:

No. of SAMPLES:

LABORATORY:

DATE COMPLETED:SAMPLE TYPE:

PROJECT:

ORDER No.:

ADDRESS:

CONTACT:

CLIENT:

COMMENTS

DATE RECEIVED:

EM14153MR PETER FOOTE0

HLA-ENVIROSCIENCES PTY LTDMELBOURNE18/10/2002

46 CLARENDON ST 31/10/2002SOUTH MELBOURNE VIC 3205

WATER3D0060/1

ADI MULWALA

2Ionic balances are within acceptable limits as detailed in the 20th

2edition APHA "Standard Methods for the examination of water &

2wastewater". EG-020 metals conducted by ALS Sydney, NATA Accreditation

2No. 10918.

2

NOTESThis is the Final Report and supersedes any preliminary reports with this batch number.All pages of this report have been checked and approved for release.

ISSUING LABORATORY:

Address Phone:

Fax:

Email:

Signatory

MELBOURNE

NATA Accredited Laboratory Number 82561-3-9538 4444

Unit 6 / Adamco Business Park2 Sarton RoadClayton VIC 3168

61-3-9538 4400

[email protected]

Australian Laboratory Services Pty Ltd (ABN 84 009 936 029) ofPage 2 26

SAMPLE IDENTIFICATIONLaboratory I.D.

METHOD

Client Reference:

Batch:Sub Batch:Date of Issue:Client:

Date Sampled

UNIT LOR ANALYSIS DESCRIPTION

EM14153CERTIFICATE OF ANALYSIS0

17/03/2003HLA-ENVIROSCIENCES PTY LTDADI MULWALA

1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EA-015 Total Dissolved Solids (TDS) mg/L 1 1370 604 2930

ED-005F Calcium - Filtered mg/L 1 7 5 23

ED-010F Magnesium - Filtered mg/L 1 20 15 99

ED-015F Sodium - Filtered mg/L 1 148 135 826

ED-020F Potassium - Filtered mg/L 1 2 5 7

ED-030 Carbonate as CaCO3 mg/L 1 <1 <1 <1

ED-035 Bicarbonate as CaCO3 mg/L 1 126 120 360

ED-040F Sulphate - Filtered mg/L 1 70 29 206

ED-045 Chloride mg/L 1 161 183 1340

EG-020F Arsenic - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Cadmium - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Chromium - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Copper - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Manganese - Filtered mg/L 0.001 0.026 0.055 0.019

EG-020F Nickel - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Lead - Filtered mg/L 0.001 0.002 <0.001 0.001

EG-020F Tin - Filtered mg/L 0.001 <0.001 <0.001 <0.001

EG-020F Zinc - Filtered mg/L 0.001 0.009 0.005 0.009

EG-035F Mercury - Filtered mg/L 0.0001 <0.0001 <0.0001 <0.0001

EG-051 Ferrous Iron mg/L 0.1 <0.1 <0.1 <0.1

EG-052 Ferric Iron mg/L 0.1 <0.1 <0.1 <0.1

EK-055 Ammonia as N mg/L 0.01 0.05 0.06 0.06

EK-057 Nitrite as N mg/L 0.01 0.03 0.03 0.05

EK-058 Nitrate as N mg/L 0.01 0.07 0.07 0.11

EK-060 Organic Nitrogen as N mg/L 0.1 0.9 12.8 0.3

EK-061 Total Kjeldahl Nitrogen as N mg/L 0.1 1.0 12.9 0.4

EK-071 Reactive Phosphorus as P - Total mg/L 0.01 3.15 7.58 0.37

EP-005 Total Organic Carbon mg/L 1 <1 <1 <1

EP-026 Chemical Oxygen Demand mg/L 1 96 112 88

EP-030 Biochemical Oxygen Demand mg/L 2 8 7 8

EZ-005 Total Cations me/L 0.01 8.45 7.50 45.4

EZ-010 Total Anions me/L 0.01 8.51 8.18 49.2

EZ-015 Actual (Anion / Cation) Difference me/L 0.01 0.07 0.68 3.82

EZ-020 Allowed (Anion / Cation) Difference me/L 0.01 0.24 0.23 0.87 4



METHOD

Client Reference:


Date Sampled


EM14153QUALITY CONTROL REPORT0


1 3 200 201 202

17/10/2002 17/10/2002 18/10/2002 18/10/2002 18/10/2002

BH80_17/10 BH82_17/10 METHOD LCS MS

/02 MS /02 CHK BLANK

CHECKS AND SPIKES

EA-015 Total Dissolved Solids (TDS) mg/L 1 ---- ---- <1 101% ----

ED-005F Calcium - Filtered mg/L 1 ---- 23 <1 110% ----

ED-010F Magnesium - Filtered mg/L 1 ---- 101 <1 106% ----

ED-015F Sodium - Filtered mg/L 1 ---- 803 <1 96.0% ----

ED-020F Potassium - Filtered mg/L 1 ---- 7 <1 97.0% ----

ED-030 Carbonate as CaCO3 mg/L 1 ---- ---- ---- ---- ----

ED-035 Bicarbonate as CaCO3 mg/L 1 ---- ---- ---- 103% ----

ED-040F Sulphate - Filtered mg/L 1 ---- 208 <1 99.0% ----

ED-045 Chloride mg/L 1 ---- ---- <1 98.0% 93.0%

EG-020F Arsenic - Filtered mg/L 0.001 94.0% <0.001 <0.001 102% 94.0%

EG-020F Cadmium - Filtered mg/L 0.001 103% <0.001 <0.001 100% 103%

EG-020F Chromium - Filtered mg/L 0.001 83.0% <0.001 <0.001 86.0% 83.0%

EG-020F Copper - Filtered mg/L 0.001 87.0% <0.001 <0.001 105% 94.0%

EG-020F Manganese - Filtered mg/L 0.001 96.0% 0.019 <0.001 100% 96.0%

EG-020F Nickel - Filtered mg/L 0.001 88.0% <0.001 <0.001 90.0% 88.0%

EG-020F Lead - Filtered mg/L 0.001 99.0% 0.001 <0.001 87.0% 99.0%

EG-020F Tin - Filtered mg/L 0.001 ---- <0.001 <0.001 95.0% ----

EG-020F Zinc - Filtered mg/L 0.001 99.0% 0.008 <0.001 112% 99.0%

EG-035F Mercury - Filtered mg/L 0.0001 106% <0.0001 <0.0001 106% ----

EG-051 Ferrous Iron mg/L 0.1 98.0% <0.1 <0.1 100% ----

EG-052 Ferric Iron mg/L 0.1 ---- ---- ---- ---- ----

EK-055 Ammonia as N mg/L 0.01 ---- ---- <0.01 101% 113%

EK-057 Nitrite as N mg/L 0.01 ---- ---- <0.01 109% 76.0%

EK-058 Nitrate as N mg/L 0.01 ---- ---- <0.01 108% 86.0%

EK-060 Organic Nitrogen as N mg/L 0.1 ---- ---- ---- ---- ----

EK-061 Total Kjeldahl Nitrogen as N mg/L 0.1 102% ---- <0.1 95.0% ----

EK-071 Reactive Phosphorus as P - Total mg/L 0.01 94.0% ---- <0.01 94.0% ----

EP-005 Total Organic Carbon mg/L 1 ---- <1 <1 105% ----

EP-026 Chemical Oxygen Demand mg/L 1 ---- 96 ---- 84.0% ----

EP-030 Biochemical Oxygen Demand mg/L 2 ---- ---- ---- 111% ----

EZ-005 Total Cations me/L 0.01 ---- ---- ---- ---- ----

EZ-010 Total Anions me/L 0.01 ---- ---- ---- ---- ----



METHOD

Client Reference:


Date Sampled




1 3 200 201 202

17/10/2002 17/10/2002 18/10/2002 18/10/2002 18/10/2002

BH80_17/10 BH82_17/10 METHOD LCS MS

/02 MS /02 CHK BLANK

CHECKS AND SPIKES

EZ-015 Actual (Anion / Cation) Difference me/L 0.01 ---- ---- ---- ---- ----

EZ-020 Allowed (Anion / Cation) Difference me/L 0.01 ---- ---- ---- ---- ---- 4


LABORATORIES



5 26


Batch:Sub Batch:

No. of SAMPLES:

LABORATORY:


PROJECT:

ORDER No.:

ADDRESS:

CONTACT:

CLIENT:

COMMENTS

DATE RECEIVED:




WATER3D0060/1

ADI MULWALA

2Insufficient sample was provided for extended QC analysis.

2


ISSUING LABORATORY:

Address Phone:

Fax:

Email:

Signatory

MELBOURNE



61-3-9538 4400

[email protected]



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-075A-WS PHENOLS

EP-075A-WS Phenol ug/L 2 <2 <2 <2

EP-075A-WS 2-Chlorophenol ug/L 2 <2 <2 <2

EP-075A-WS 2-Methylphenol ug/L 2 <2 <2 <2

EP-075A-WS 3- & 4-Methylphenol ug/L 2 <2 <2 <2

EP-075A-WS 2-Nitrophenol ug/L 2 <2 <2 <2

EP-075A-WS 2.4-Dimethylphenol ug/L 2 <2 <2 <2

EP-075A-WS 2.4-Dichlorophenol ug/L 2 <2 <2 <2

EP-075A-WS 2.6-Dichlorophenol ug/L 2 <2 <2 <2

EP-075A-WS 4-Chloro-3-methylphenol ug/L 2 <2 <2 <2

EP-075A-WS 2.4.6-Trichlorophenol ug/L 2 <2 <2 <2

EP-075A-WS 2.4.5-Trichlorophenol ug/L 2 <2 <2 <2

EP-075A-WS Pentachlorophenol ug/L 4 <4 <4 <4

EP-075B-WS POLYNUCLEAR AROMATICS

EP-075B-WS Naphthalene ug/L 2 <2 <2 <2

EP-075B-WS 2-Methylnaphthalene ug/L 2 <2 <2 <2

EP-075B-WS 2-Chloronaphthalene ug/L 2 <2 <2 <2

EP-075B-WS Acenaphthylene ug/L 2 <2 <2 <2

EP-075B-WS Acenaphthene ug/L 2 <2 <2 <2

EP-075B-WS Fluorene ug/L 2 <2 <2 <2

EP-075B-WS Phenanthrene ug/L 2 <2 <2 <2

EP-075B-WS Anthracene ug/L 2 <2 <2 <2

EP-075B-WS Fluoranthene ug/L 2 <2 <2 <2

EP-075B-WS Pyrene ug/L 2 <2 <2 <2

EP-075B-WS N-2-Fluorenylacetamide ug/L 2 <2 <2 <2

EP-075B-WS Benz(a)anthracene ug/L 2 <2 <2 <2

EP-075B-WS Chrysene ug/L 2 <2 <2 <2

EP-075B-WS Benzo(b) & (k)fluoranthene ug/L 4 <4 <4 <4

EP-075B-WS 7.12-Dimethylbenz(a)anthracene ug/L 2 <2 <2 <2

EP-075B-WS Benzo(a)pyrene ug/L 2 <2 <2 <2

EP-075B-WS 3-Methylcholanthrene ug/L 2 <2 <2 <2

EP-075B-WS Indeno(1.2.3-cd)pyrene ug/L 2 <2 <2 <2

EP-075B-WS Dibenz(a.h)anthracene ug/L 2 <2 <2 <2

EP-075B-WS Benzo(g.h.i)perylene ug/L 2 <2 <2 <2

EP-075C-WS PHTHALATE ESTERS



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-075C-WS Dimethyl phthalate ug/L 2 <2 <2 <2

EP-075C-WS Diethyl phthalate ug/L 2 <2 <2 <2

EP-075C-WS Di-n-butyl phthalate ug/L 2 <2 2 <2

EP-075C-WS Butyl benzyl phthalate ug/L 2 <2 <2 <2

EP-075C-WS Bis(2-ethylhexyl)phthalate ug/L 20 <20 <20 <20

EP-075C-WS Di-n-octyl phthalate ug/L 2 <2 <2 <2

EP-075D-WS NITROSAMINES

EP-075D-WS N-Nitrosomethylethylamine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosodiethylamine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosopyrrolidine ug/L 4 <4 <4 <4

EP-075D-WS N-Nitrosomorpholine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosodi-n-propylamine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosopiperidine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosodibutylamine ug/L 2 <2 <2 <2

EP-075D-WS N-Nitrosodiphenyl & Diphenylamine ug/L 4 <4 <4 <4

EP-075D-WS Methapyrilene ug/L 2 <2 <2 <2

EP-075E-WS NITROAROMATICS AND CYCLIC KETONES

EP-075E-WS 2-Picoline ug/L 2 <2 <2 <2

EP-075E-WS Acetophenone ug/L 2 <2 <2 <2

EP-075E-WS Nitrobenzene ug/L 2 <2 <2 <2

EP-075E-WS Isophorone ug/L 2 <2 <2 <2

EP-075E-WS 2.6-Dinitrotoluene ug/L 4 <4 <4 <4

EP-075E-WS 2.4-Dinitrotoluene ug/L 4 <4 <4 <4

EP-075E-WS 1-Naphthylamine ug/L 2 <2 <2 <2

EP-075E-WS 4-Nitroquinoline-N-oxide ug/L 2 <2 <2 <2

EP-075E-WS 5-Nitro-o-toluidine ug/L 2 <2 <2 <2

EP-075E-WS Azobenzene ug/L 2 <2 <2 <2

EP-075E-WS 1.3.5-Trinitrobenzene ug/L 2 <2 <2 <2

EP-075E-WS Phenacetin ug/L 2 <2 <2 <2

EP-075E-WS 4-Aminobiphenyl ug/L 2 <2 <2 <2

EP-075E-WS Pentachloronitrobenzene ug/L 2 <2 <2 <2

EP-075E-WS Pronamide ug/L 2 <2 <2 <2

EP-075E-WS Dimethylaminoazobenzene ug/L 2 <2 <2 <2

EP-075E-WS Chlorobenzilate ug/L 2 <2 <2 <2

EP-075F-WS HALOETHERS



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-075F-WS Bis(2-chloroethyl) ether ug/L 2 <2 <2 <2

EP-075F-WS Bis(2-chloroethoxy) methane ug/L 2 <2 <2 <2

EP-075F-WS 4-Chlorophenyl phenyl ether ug/L 2 <2 <2 <2

EP-075F-WS 4-Bromophenyl phenyl ether ug/L 2 <2 <2 <2

EP-075G-WS CHLORINATED HYDROCARBONS

EP-075G-WS 1.3-Dichlorobenzene ug/L 2 <2 <2 <2



EP-075G-WS Hexachloroethane ug/L 2 <2 <2 <2

EP-075G-WS 1.2.4-Trichlorobenzene ug/L 2 <2 <2 <2

EP-075G-WS Hexachloropropylene ug/L 2 <2 <2 <2

EP-075G-WS Hexachlorobutadiene ug/L 2 <2 <2 <2

EP-075G-WS Hexachlorocyclopentadiene ug/L 10 <10 <10 <10

EP-075G-WS Pentachlorobenzene ug/L 2 <2 <2 <2

EP-075G-WS Hexachlorobenzene ug/L 4 <4 <4 <4

EP-075H-WS ANILINES AND BENZIDINES

EP-075H-WS Aniline ug/L 2 <2 <2 <2

EP-075H-WS 4-Chloroaniline ug/L 2 <2 <2 <2

EP-075H-WS 2-Nitroaniline ug/L 4 <4 <4 <4


EP-075H-WS Dibenzofuran ug/L 2 <2 <2 <2


EP-075H-WS Carbazole ug/L 2 <2 <2 <2

EP-075H-WS 3.3'-Dichlorobenzidine ug/L 2 <2 <2 <2

EP-075I-WS ORGANOCHLORINE PESTICIDES

EP-075I-WS alpha-BHC ug/L 2 <2 <2 <2

EP-075I-WS beta-BHC & gamma-BHC ug/L 4 <4 <4 <4

EP-075I-WS delta-BHC ug/L 2 <2 <2 <2

EP-075I-WS Heptachlor ug/L 2 <2 <2 <2

EP-075I-WS Aldrin ug/L 2 <2 <2 <2

EP-075I-WS Heptachlor epoxide ug/L 2 <2 <2 <2

EP-075I-WS Endosulfan 1 ug/L 2 <2 <2 <2

EP-075I-WS 4.4'-DDE ug/L 2 <2 <2 <2

EP-075I-WS Dieldrin ug/L 2 <2 <2 <2



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-075I-WS Endrin ug/L 2 <2 <2 <2

EP-075I-WS Endosulfan 2 ug/L 2 <2 <2 <2

EP-075I-WS 4.4'-DDD ug/L 2 <2 <2 <2

EP-075I-WS Endosulfan sulfate ug/L 2 <2 <2 <2

EP-075I-WS 4.4'-DDT ug/L 4 <4 <4 <4

EP-075J-WS ORGANOPHOSPHORUS PESTICIDES

EP-075J-WS Dichlorvos ug/L 2 <2 <2 <2

EP-075J-WS Dimethoate ug/L 2 <2 <2 <2

EP-075J-WS Diazinon ug/L 2 <2 <2 <2

EP-075J-WS Chlorpyrifos methyl ug/L 2 <2 <2 <2

EP-075J-WS Malathion ug/L 2 <2 <2 <2

EP-075J-WS Fenthion ug/L 2 <2 <2 <2

EP-075J-WS Chlorpyrifos ug/L 2 <2 <2 <2

EP-075J-WS Pirimiphos ethyl ug/L 2 <2 <2 <2

EP-075J-WS Chorfenvinphos-E ug/L 2 <2 <2 <2

EP-075J-WS Chlorfenvinphos-Z ug/L 2 <2 <2 <2

EP-075J-WS Prothiofos ug/L 2 <2 <2 <2

EP-075J-WS Ethion ug/L 2 <2 <2 <2

EP-075S-WS ACID EXTRACTABLE SURROGATES

EP-075S-WS 2-Fluorophenol % 1 67 72 71

EP-075S-WS Phenol-D6 % 1 34 36 36

EP-075S-WS 2-Chlorophenol-D4 % 1 85 85 87

EP-075S-WS 2.4.6-Tribromophenol % 1 21 38 24

EP-075T-WS BASE/NEUTRAL EXTRACTABLE SURROGATES

EP-075T-WS Nitrobenzene-D5 % 1 85 79 87

EP-075T-WS 1.2-Dichlorobenzene-D4 % 1 88 81 86

EP-075T-WS 2-Fluorobiphenyl % 1 95 84 91

EP-075T-WS Anthracene-d10 % 1 97 106 111

EP-075T-WS p-Terphenyl-D14 % 1 103 94 96 4



METHOD

Client Reference:


Date Sampled




100 101 102

18/10/2002 18/10/2002 18/10/2002

METHOD VSVOCW369 VSVOCW369

BLANK SCS DCS

CHECKS AND SPIKES

EP-075A-WS PHENOLS

EP-075A-WS Phenol ug/L 2 <2 24.9% 24.3%

EP-075A-WS 2-Chlorophenol ug/L 2 <2 50.9% 54.0%

EP-075A-WS 2-Methylphenol ug/L 2 <2 52.8% 71.4%

EP-075A-WS 3- & 4-Methylphenol ug/L 2 <2 43.0% 46.0%

EP-075A-WS 2-Nitrophenol ug/L 2 <2 56.2% 60.5%

EP-075A-WS 2.4-Dimethylphenol ug/L 2 <2 54.8% 60.1%

EP-075A-WS 2.4-Dichlorophenol ug/L 2 <2 71.7% 73.5%

EP-075A-WS 2.6-Dichlorophenol ug/L 2 <2 55.6% 57.1%

EP-075A-WS 4-Chloro-3-methylphenol ug/L 2 <2 58.7% 65.4%

EP-075A-WS 2.4.6-Trichlorophenol ug/L 2 <2 55.9% 55.5%

EP-075A-WS 2.4.5-Trichlorophenol ug/L 2 <2 55.6% 57.9%

EP-075A-WS Pentachlorophenol ug/L 4 <4 7.00% 11.7%

EP-075B-WS POLYNUCLEAR AROMATICS

EP-075B-WS Naphthalene ug/L 2 <2 53.4% 58.7%

EP-075B-WS 2-Methylnaphthalene ug/L 2 <2 56.3% 59.2%

EP-075B-WS 2-Chloronaphthalene ug/L 2 <2 53.7% 56.9%

EP-075B-WS Acenaphthylene ug/L 2 <2 57.6% 58.4%

EP-075B-WS Acenaphthene ug/L 2 <2 57.0% 60.0%

EP-075B-WS Fluorene ug/L 2 <2 61.8% 65.4%

EP-075B-WS Phenanthrene ug/L 2 <2 60.1% 63.7%

EP-075B-WS Anthracene ug/L 2 <2 62.4% 64.0%

EP-075B-WS Fluoranthene ug/L 2 <2 60.4% 61.1%

EP-075B-WS Pyrene ug/L 2 <2 68.9% 62.6%

EP-075B-WS N-2-Fluorenylacetamide ug/L 2 <2 64.8% 67.6%

EP-075B-WS Benz(a)anthracene ug/L 2 <2 69.8% 72.4%

EP-075B-WS Chrysene ug/L 2 <2 64.2% 64.9%

EP-075B-WS Benzo(b) & (k)fluoranthene ug/L 4 <4 79.7% 86.1%

EP-075B-WS 7.12-Dimethylbenz(a)anthracene ug/L 2 <2 121% 131%

EP-075B-WS Benzo(a)pyrene ug/L 2 <2 83.6% 82.4%

EP-075B-WS 3-Methylcholanthrene ug/L 2 <2 97.5% 85.1%

EP-075B-WS Indeno(1.2.3-cd)pyrene ug/L 2 <2 108% 115%



METHOD

Client Reference:


Date Sampled




100 101 102

18/10/2002 18/10/2002 18/10/2002


BLANK SCS DCS

CHECKS AND SPIKES

EP-075B-WS Dibenz(a.h)anthracene ug/L 2 <2 104% 88.0%

EP-075B-WS Benzo(g.h.i)perylene ug/L 2 <2 115% 107%

EP-075C-WS PHTHALATE ESTERS

EP-075C-WS Dimethyl phthalate ug/L 2 <2 63.0% 62.5%

EP-075C-WS Diethyl phthalate ug/L 2 <2 61.9% 64.7%

EP-075C-WS Di-n-butyl phthalate ug/L 2 <2 66.4% 68.0%

EP-075C-WS Butyl benzyl phthalate ug/L 2 <2 65.3% 62.0%

EP-075C-WS Bis(2-ethylhexyl)phthalate ug/L 20 <20 92.1% 106%

EP-075C-WS Di-n-octyl phthalate ug/L 2 <2 76.4% 83.3%

EP-075D-WS NITROSAMINES

EP-075D-WS N-Nitrosomethylethylamine ug/L 2 <2 35.2% 36.8%

EP-075D-WS N-Nitrosodiethylamine ug/L 2 <2 49.4% 46.2%

EP-075D-WS N-Nitrosopyrrolidine ug/L 4 <4 32.8% 32.6%

EP-075D-WS N-Nitrosomorpholine ug/L 2 <2 35.2% 35.2%

EP-075D-WS N-Nitrosodi-n-propylamine ug/L 2 <2 53.4% 76.8%

EP-075D-WS N-Nitrosopiperidine ug/L 2 <2 52.9% 55.6%

EP-075D-WS N-Nitrosodibutylamine ug/L 2 <2 60.2% 63.7%

EP-075D-WS N-Nitrosodiphenyl & Diphenylamine ug/L 4 <4 66.9% 66.9%

EP-075D-WS Methapyrilene ug/L 2 <2 53.4% 47.2%

EP-075E-WS NITROAROMATICS AND CYCLIC KETONES

EP-075E-WS 2-Picoline ug/L 2 <2 71.0% 67.4%

EP-075E-WS Acetophenone ug/L 2 <2 54.9% 58.6%

EP-075E-WS Nitrobenzene ug/L 2 <2 65.1% 67.6%

EP-075E-WS Isophorone ug/L 2 <2 59.2% 60.1%

EP-075E-WS 2.6-Dinitrotoluene ug/L 4 <4 65.1% 67.7%

EP-075E-WS 2.4-Dinitrotoluene ug/L 4 <4 58.4% 60.4%

EP-075E-WS 1-Naphthylamine ug/L 2 <2 55.1% 64.1%

EP-075E-WS 4-Nitroquinoline-N-oxide ug/L 2 <2 57.0% 60.6%

EP-075E-WS 5-Nitro-o-toluidine ug/L 2 <2 62.0% 65.4%

EP-075E-WS Azobenzene ug/L 2 <2 65.4% 74.0%

EP-075E-WS 1.3.5-Trinitrobenzene ug/L 2 <2 46.4% 49.3%

EP-075E-WS Phenacetin ug/L 2 <2 78.3% 83.4%



METHOD

Client Reference:


Date Sampled




100 101 102

18/10/2002 18/10/2002 18/10/2002


BLANK SCS DCS

CHECKS AND SPIKES

EP-075E-WS 4-Aminobiphenyl ug/L 2 <2 70.7% 74.0%

EP-075E-WS Pentachloronitrobenzene ug/L 2 <2 63.0% 61.3%

EP-075E-WS Pronamide ug/L 2 <2 75.5% 68.8%

EP-075E-WS Dimethylaminoazobenzene ug/L 2 <2 66.1% 66.2%

EP-075E-WS Chlorobenzilate ug/L 2 <2 61.0% 62.1%

EP-075F-WS HALOETHERS

EP-075F-WS Bis(2-chloroethyl) ether ug/L 2 <2 58.0% 56.1%

EP-075F-WS Bis(2-chloroethoxy) methane ug/L 2 <2 61.0% 61.9%

EP-075F-WS 4-Chlorophenyl phenyl ether ug/L 2 <2 59.3% 60.2%

EP-075F-WS 4-Bromophenyl phenyl ether ug/L 2 <2 58.2% 57.9%

EP-075G-WS CHLORINATED HYDROCARBONS

EP-075G-WS 1.3-Dichlorobenzene ug/L 2 <2 49.9% 52.4%



EP-075G-WS Hexachloroethane ug/L 2 <2 51.1% 54.3%

EP-075G-WS 1.2.4-Trichlorobenzene ug/L 2 <2 53.9% 55.1%

EP-075G-WS Hexachloropropylene ug/L 2 <2 57.3% 57.5%

EP-075G-WS Hexachlorobutadiene ug/L 2 <2 55.6% 55.6%

EP-075G-WS Hexachlorocyclopentadiene ug/L 10 <10 37.6% 33.7%

EP-075G-WS Pentachlorobenzene ug/L 2 <2 56.1% 58.6%

EP-075G-WS Hexachlorobenzene ug/L 4 <4 56.4% 57.9%

EP-075H-WS ANILINES AND BENZIDINES

EP-075H-WS Aniline ug/L 2 <2 23.2% 62.0%

EP-075H-WS 4-Chloroaniline ug/L 2 <2 34.6% 37.5%

EP-075H-WS 2-Nitroaniline ug/L 4 <4 58.7% 59.1%


EP-075H-WS Dibenzofuran ug/L 2 <2 58.1% 60.5%


EP-075H-WS Carbazole ug/L 2 <2 63.9% 66.7%

EP-075H-WS 3.3'-Dichlorobenzidine ug/L 2 <2 57.5% 58.7%

EP-075I-WS ORGANOCHLORINE PESTICIDES

EP-075I-WS alpha-BHC ug/L 2 <2 69.4% 69.1%



METHOD

Client Reference:


Date Sampled




100 101 102

18/10/2002 18/10/2002 18/10/2002


BLANK SCS DCS

CHECKS AND SPIKES

EP-075I-WS beta-BHC & gamma-BHC ug/L 4 <4 61.2% 62.6%

EP-075I-WS delta-BHC ug/L 2 <2 59.9% 63.2%

EP-075I-WS Heptachlor ug/L 2 <2 59.7% 62.4%

EP-075I-WS Aldrin ug/L 2 <2 72.6% 60.4%

EP-075I-WS Heptachlor epoxide ug/L 2 <2 59.2% 61.7%

EP-075I-WS Endosulfan 1 ug/L 2 <2 77.6% 75.0%

EP-075I-WS 4.4'-DDE ug/L 2 <2 60.3% 62.4%

EP-075I-WS Dieldrin ug/L 2 <2 64.0% 61.0%

EP-075I-WS Endrin ug/L 2 <2 58.7% 62.5%

EP-075I-WS Endosulfan 2 ug/L 2 <2 61.7% 64.5%

EP-075I-WS 4.4'-DDD ug/L 2 <2 60.7% 63.0%

EP-075I-WS Endosulfan sulfate ug/L 2 <2 54.8% 56.7%

EP-075I-WS 4.4'-DDT ug/L 4 <4 55.5% 56.2%

EP-075J-WS ORGANOPHOSPHORUS PESTICIDES

EP-075J-WS Dichlorvos ug/L 2 <2 60.8% 59.7%

EP-075J-WS Dimethoate ug/L 2 <2 57.2% 60.1%

EP-075J-WS Diazinon ug/L 2 <2 59.8% 62.3%

EP-075J-WS Chlorpyrifos methyl ug/L 2 <2 58.6% 62.4%

EP-075J-WS Malathion ug/L 2 <2 67.7% 65.0%

EP-075J-WS Fenthion ug/L 2 <2 59.4% 61.7%

EP-075J-WS Chlorpyrifos ug/L 2 <2 60.2% 59.7%

EP-075J-WS Pirimiphos ethyl ug/L 2 <2 58.2% 59.3%

EP-075J-WS Chorfenvinphos-E ug/L 2 <2 ---- ----

EP-075J-WS Chlorfenvinphos-Z ug/L 2 <2 68.7% 69.7%

EP-075J-WS Prothiofos ug/L 2 <2 60.3% 61.3%

EP-075J-WS Ethion ug/L 2 <2 64.1% 60.9%

EP-075S-WS ACID EXTRACTABLE SURROGATES

EP-075S-WS 2-Fluorophenol % 1 69 42 37

EP-075S-WS Phenol-D6 % 1 23 34 33

EP-075S-WS 2-Chlorophenol-D4 % 1 74 68 74

EP-075S-WS 2.4.6-Tribromophenol % 1 65 76 82

EP-075T-WS BASE/NEUTRAL EXTRACTABLE SURROGATES



METHOD

Client Reference:


Date Sampled




100 101 102

18/10/2002 18/10/2002 18/10/2002


BLANK SCS DCS

CHECKS AND SPIKES

EP-075T-WS Nitrobenzene-D5 % 1 85 74 89

EP-075T-WS 1.2-Dichlorobenzene-D4 % 1 81 66 71

EP-075T-WS 2-Fluorobiphenyl % 1 86 78 81

EP-075T-WS Anthracene-d10 % 1 96 113 114

EP-075T-WS p-Terphenyl-D14 % 1 94 77 81 4


LABORATORIES



15 26


Batch:Sub Batch:

No. of SAMPLES:

LABORATORY:


PROJECT:

ORDER No.:

ADDRESS:

CONTACT:

CLIENT:

COMMENTS

DATE RECEIVED:




WATER3D0060/1

ADI MULWALA

2


ISSUING LABORATORY:

Address Phone:

Fax:

Email:

Signatory

MELBOURNE



61-3-9538 4400

[email protected]



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

MW001 Heterotrophic Plate Count (37'C/48hrs) CFU/mL 1 3100 >100000 3600

MW004 Coliforms by Colilert orgs/100ml 10 5200 640 390

MW004 E.coli by Colilert orgs/100ml 10 <10 <10 <10 4


LABORATORIES



17 26


Batch:Sub Batch:

No. of SAMPLES:

LABORATORY:


PROJECT:

ORDER No.:

ADDRESS:

CONTACT:

CLIENT:

COMMENTS

DATE RECEIVED:




WATER3D0060/1

ADI MULWALA

2


ISSUING LABORATORY:

Address Phone:

Fax:

Email:

Signatory

MELBOURNE



61-3-9538 4400

[email protected]



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-074A-WS MONOCYCLIC AROMATIC HYDROCARBONS

EP-074A-WS Benzene ug/L 1 <1 1 <1

EP-074A-WS Toluene ug/L 2 <2 3 <2

EP-074A-WS Ethylbenzene ug/L 1 <1 <1 <1

EP-074A-WS meta- & para-Xylene ug/L 1 <1 <1 <1

EP-074A-WS Styrene ug/L 1 <1 <1 <1

EP-074A-WS ortho-Xylene ug/L 1 <1 <1 <1

EP-074A-WS Isopropylbenzene ug/L 1 <1 <1 <1

EP-074A-WS n-Propylbenzene ug/L 1 <1 <1 <1

EP-074A-WS 1.3.5-Trimethylbenzene ug/L 1 <1 <1 <1

EP-074A-WS sec-Butylbenzene ug/L 1 <1 <1 <1

EP-074A-WS 1.2.4-Trimethylbenzene ug/L 1 <1 <1 <1

EP-074A-WS tert-Butylbenzene ug/L 1 <1 <1 <1

EP-074A-WS p-Isopropyltoluene ug/L 1 <1 <1 <1

EP-074A-WS n-Butylbenzene ug/L 1 <1 <1 <1

EP-074B-WS OXYGENATED HYDROCARBONS

EP-074B-WS Vinyl acetate ug/L 10 <10 <10 <10

EP-074B-WS 2-Butanone (MEK) ug/L 10 <10 <10 <10

EP-074B-WS 4-Methyl-2-pentanone (MIBK) ug/L 10 <10 <10 <10

EP-074B-WS 2-Hexanone (MBK) ug/L 10 <10 <10 <10

EP-074C-WS SULFONATED COMPOUNDS

EP-074C-WS Carbon disulfide ug/L 1 <1 <1 <1

EP-074D-WS FUMIGANTS

EP-074D-WS 2.2-Dichloropropane ug/L 1 <1 <1 <1

EP-074D-WS 1.2-Dichloropropane ug/L 1 <1 <1 <1

EP-074D-WS cis-1.3-Dichloropropylene ug/L 2 <2 <2 <2

EP-074D-WS trans-1.3-Dichloropropylene ug/L 2 <2 <2 <2

EP-074D-WS 1.2-Dibromoethane (EDB) ug/L 1 <1 <1 <1

EP-074E-WS HALOGENATED ALIPHATIC HYDROCARBONS(VOL)

EP-074E-WS Dichlorodifluoromethane ug/L 10 <10 <10 <10

EP-074E-WS Chloromethane ug/L 10 <10 <10 <10

EP-074E-WS Vinyl chloride ug/L 10 <10 <10 <10

EP-074E-WS Bromomethane ug/L 10 <10 <10 <10

EP-074E-WS Chloroethane ug/L 10 <10 <10 <10



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-074E-WS Trichlorofluoromethane ug/L 10 <10 <10 <10

EP-074E-WS 1.1-Dichloroethene ug/L 1 <1 <1 <1

EP-074E-WS Iodomethane ug/L 1 <1 <1 <1

EP-074E-WS trans-1.2-Dichloroethene ug/L 1 <1 <1 <1

EP-074E-WS 1.1-Dichloroethane ug/L 1 <1 <1 <1

EP-074E-WS cis-1.2-Dichloroethene ug/L 1 <1 <1 <1

EP-074E-WS 1.1.1-Trichloroethane ug/L 1 <1 <1 <1

EP-074E-WS 1.1-Dichloropropylene ug/L 1 <1 <1 <1

EP-074E-WS Carbon tetrachloride ug/L 1 <1 <1 <1

EP-074E-WS 1.2-Dichloroethane ug/L 1 <1 <1 <1

EP-074E-WS Trichloroethene ug/L 1 <1 <1 <1

EP-074E-WS Dibromomethane ug/L 1 <1 <1 <1

EP-074E-WS 1.1.2-Trichloroethane ug/L 1 <1 <1 <1

EP-074E-WS 1.3-Dichloropropane ug/L 1 <1 <1 <1

EP-074E-WS Tetrachloroethene ug/L 1 <1 <1 <1

EP-074E-WS 1.1.1.2-Tetrachloroethane ug/L 1 <1 <1 <1

EP-074E-WS trans-1.4-Dichloro-2-butene ug/L 1 <1 <1 <1

EP-074E-WS cis-1.4-Dichloro-2-butene ug/L 1 <1 <1 <1

EP-074E-WS 1.1.2.2-Tetrachloroethane ug/L 1 <1 <1 <1

EP-074E-WS 1.2.3-Trichloropropane ug/L 1 <1 <1 <1

EP-074E-WS Pentachloroethane ug/L 1 <1 <1 <1

EP-074E-WS 1.2-Dibromo-3-chloropropane ug/L 1 <1 <1 <1

EP-074E-WS Hexachlorobutadiene ug/L 1 <1 <1 <1

EP-074F-WS HALOGENATED AROMATIC HYDROCARBONS (VOL)

EP-074F-WS Chlorobenzene ug/L 1 <1 <1 <1

EP-074F-WS Bromobenzene ug/L 1 <1 <1 <1

EP-074F-WS 2-Chlorotoluene ug/L 1 <1 <1 <1

EP-074F-WS 4-Chlorotoluene ug/L 1 <1 <1 <1

EP-074F-WS 1.3-Dichlorobenzene ug/L 1 <1 <1 <1



EP-074F-WS 1.2.4-Trichlorobenzene ug/L 1 <1 <1 <1

EP-074F-WS 1.2.3-Trichlorobenzene ug/L 1 <1 <1 <1

EP-074G-WS TRIHALOMETHANES (VOLATILES)



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-074G-WS Chloroform ug/L 1 <1 <1 <1

EP-074G-WS Bromodichloromethane ug/L 1 <1 <1 <1

EP-074G-WS Dibromochloromethane ug/L 1 <1 <1 <1

EP-074G-WS Bromoform ug/L 1 <1 <1 <1

EP-074H-WS NAPHTHALENE

EP-074H-WS Naphthalene ug/L 7 <7 <7 <7

EP-074S-WS VOLATILE COMPOUND SURROGATES

EP-074S-WS 1.2-Dichloroethane-D4 % 1 107 110 106

EP-074S-WS Toluene-D8 % 1 104 104 102

EP-074S-WS 4-Bromofluorobenzene % 1 98 101 97 4



METHOD

Client Reference:


Date Sampled




3 100 101 102 103 104

17/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002

BH82_17/10 METHOD VVSCW256 VVSCW256 VVSCW256 VVSCW256

/02 CHK BLANK SCS DCS MS MSD

CHECKS AND SPIKES

EP-074A-WS MONOCYCLIC AROMATIC HYDROCARBONS

EP-074A-WS Benzene ug/L 1 <1 <1 96.0% 95.5% 90.8% 99.7%

EP-074A-WS Toluene ug/L 2 <2 <2 99.5% 98.9% 86.7% 92.6%

EP-074A-WS Ethylbenzene ug/L 1 <1 <1 101% 97.8% ---- ----

EP-074A-WS meta- & para-Xylene ug/L 1 <1 <1 99.1% 98.9% ---- ----

EP-074A-WS Styrene ug/L 1 <1 <1 99.4% 100% ---- ----

EP-074A-WS ortho-Xylene ug/L 1 <1 <1 99.0% 96.1% ---- ----

EP-074A-WS Isopropylbenzene ug/L 1 <1 <1 102% 99.3% ---- ----

EP-074A-WS n-Propylbenzene ug/L 1 <1 <1 103% 101% ---- ----

EP-074A-WS 1.3.5-Trimethylbenzene ug/L 1 <1 <1 102% 100% ---- ----

EP-074A-WS sec-Butylbenzene ug/L 1 <1 <1 106% 103% ---- ----

EP-074A-WS 1.2.4-Trimethylbenzene ug/L 1 <1 <1 100% 98.2% ---- ----

EP-074A-WS tert-Butylbenzene ug/L 1 <1 <1 105% 104% ---- ----

EP-074A-WS p-Isopropyltoluene ug/L 1 <1 <1 103% 103% ---- ----

EP-074A-WS n-Butylbenzene ug/L 1 <1 <1 104% 103% ---- ----

EP-074B-WS OXYGENATED HYDROCARBONS

EP-074B-WS Vinyl acetate ug/L 10 <10 <10 91.4% 91.3% ---- ----

EP-074B-WS 2-Butanone (MEK) ug/L 10 <10 <10 92.7% 96.3% ---- ----

EP-074B-WS 4-Methyl-2-pentanone (MIBK) ug/L 10 <10 <10 96.4% 89.6% ---- ----

EP-074B-WS 2-Hexanone (MBK) ug/L 10 <10 <10 96.6% 82.8% ---- ----

EP-074C-WS SULFONATED COMPOUNDS

EP-074C-WS Carbon disulfide ug/L 1 <1 <1 110% 104% ---- ----

EP-074D-WS FUMIGANTS

EP-074D-WS 2.2-Dichloropropane ug/L 1 <1 <1 102% 101% ---- ----

EP-074D-WS 1.2-Dichloropropane ug/L 1 <1 <1 95.0% 91.1% ---- ----

EP-074D-WS cis-1.3-Dichloropropylene ug/L 2 <2 <2 94.8% 91.8% ---- ----

EP-074D-WS trans-1.3-Dichloropropylene ug/L 2 <2 <2 95.3% 94.0% ---- ----

EP-074D-WS 1.2-Dibromoethane (EDB) ug/L 1 <1 <1 95.0% 91.8% ---- ----

EP-074E-WS HALOGENATED ALIPHATIC HYDROCARBONS(VOL)

EP-074E-WS Dichlorodifluoromethane ug/L 10 <10 <10 119% 118% ---- ----

EP-074E-WS Chloromethane ug/L 10 <10 <10 102% 103% ---- ----

EP-074E-WS Vinyl chloride ug/L 10 <10 <10 104% 103% ---- ----



METHOD

Client Reference:


Date Sampled




3 100 101 102 103 104

17/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002



CHECKS AND SPIKES

EP-074E-WS Bromomethane ug/L 10 <10 <10 101% 99.5% ---- ----

EP-074E-WS Chloroethane ug/L 10 <10 <10 102% 101% ---- ----

EP-074E-WS Trichlorofluoromethane ug/L 10 <10 <10 106% 105% ---- ----

EP-074E-WS 1.1-Dichloroethene ug/L 1 <1 <1 101% 99.4% 96.5% 103%

EP-074E-WS Iodomethane ug/L 1 <1 <1 97.1% 93.0% ---- ----

EP-074E-WS trans-1.2-Dichloroethene ug/L 1 <1 <1 99.8% 99.2% ---- ----

EP-074E-WS 1.1-Dichloroethane ug/L 1 <1 <1 99.0% 96.9% ---- ----

EP-074E-WS cis-1.2-Dichloroethene ug/L 1 <1 <1 94.5% 94.5% ---- ----

EP-074E-WS 1.1.1-Trichloroethane ug/L 1 <1 <1 105% 104% ---- ----

EP-074E-WS 1.1-Dichloropropylene ug/L 1 <1 <1 102% 95.8% ---- ----

EP-074E-WS Carbon tetrachloride ug/L 1 <1 <1 107% 106% ---- ----

EP-074E-WS 1.2-Dichloroethane ug/L 1 <1 <1 97.4% 97.2% ---- ----

EP-074E-WS Trichloroethene ug/L 1 <1 <1 98.9% 96.8% 84.9% 92.1%

EP-074E-WS Dibromomethane ug/L 1 <1 <1 94.4% 95.7% ---- ----

EP-074E-WS 1.1.2-Trichloroethane ug/L 1 <1 <1 91.8% 92.5% ---- ----

EP-074E-WS 1.3-Dichloropropane ug/L 1 <1 <1 95.0% 93.0% ---- ----

EP-074E-WS Tetrachloroethene ug/L 1 <1 <1 103% 101% ---- ----

EP-074E-WS 1.1.1.2-Tetrachloroethane ug/L 1 <1 <1 98.9% 99.6% ---- ----

EP-074E-WS trans-1.4-Dichloro-2-butene ug/L 1 <1 <1 101% 106% ---- ----

EP-074E-WS cis-1.4-Dichloro-2-butene ug/L 1 <1 <1 106% 83.5% ---- ----

EP-074E-WS 1.1.2.2-Tetrachloroethane ug/L 1 <1 <1 95.9% 93.2% ---- ----

EP-074E-WS 1.2.3-Trichloropropane ug/L 1 <1 <1 94.1% 106% ---- ----

EP-074E-WS Pentachloroethane ug/L 1 <1 <1 103% 102% ---- ----

EP-074E-WS 1.2-Dibromo-3-chloropropane ug/L 1 <1 <1 114% 56.7% ---- ----

EP-074E-WS Hexachlorobutadiene ug/L 1 <1 <1 110% 112% ---- ----

EP-074F-WS HALOGENATED AROMATIC HYDROCARBONS (VOL)

EP-074F-WS Chlorobenzene ug/L 1 <1 <1 98.7% 94.6% 91.0% 98.8%

EP-074F-WS Bromobenzene ug/L 1 <1 <1 99.6% 100% ---- ----

EP-074F-WS 2-Chlorotoluene ug/L 1 <1 <1 100% 103% ---- ----

EP-074F-WS 4-Chlorotoluene ug/L 1 <1 <1 98.2% 95.9% ---- ----

EP-074F-WS 1.3-Dichlorobenzene ug/L 1 <1 <1 96.0% 95.7% ---- ----




METHOD

Client Reference:


Date Sampled




3 100 101 102 103 104

17/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002 18/10/2002



CHECKS AND SPIKES


EP-074F-WS 1.2.4-Trichlorobenzene ug/L 1 <1 <1 96.0% 95.0% ---- ----

EP-074F-WS 1.2.3-Trichlorobenzene ug/L 1 <1 <1 96.2% 99.7% ---- ----

EP-074G-WS TRIHALOMETHANES (VOLATILES)

EP-074G-WS Chloroform ug/L 1 <1 <1 98.0% 99.4% ---- ----

EP-074G-WS Bromodichloromethane ug/L 1 <1 <1 98.5% 95.2% ---- ----

EP-074G-WS Dibromochloromethane ug/L 1 <1 <1 91.0% 97.9% ---- ----

EP-074G-WS Bromoform ug/L 1 <1 <1 104% 103% ---- ----

EP-074H-WS NAPHTHALENE

EP-074H-WS Naphthalene ug/L 7 <7 <7 100% 96.4% ---- ----

EP-074S-WS VOLATILE COMPOUND SURROGATES

EP-074S-WS 1.2-Dichloroethane-D4 % 1 115 102 99 96 106 104

EP-074S-WS Toluene-D8 % 1 107 114 103 102 109 114

EP-074S-WS 4-Bromofluorobenzene % 1 104 109 100 95 99 104 4


LABORATORIES



24 26


Batch:Sub Batch:

No. of SAMPLES:

LABORATORY:


PROJECT:

ORDER No.:

ADDRESS:

CONTACT:

CLIENT:

COMMENTS

DATE RECEIVED:




WATER3D0060/1

ADI MULWALA

2Analysis conducted by ALS Sydney, NATA Accreditation No. 10918.

2


ISSUING LABORATORY:

Address Phone:

Fax:

Email:

Signatory

MELBOURNE



61-3-9538 4400

[email protected]



METHOD

Client Reference:


Date Sampled




1 2 3

17/10/2002 17/10/2002 17/10/2002

BH80_ BH81_ BH82_

17/10/02 17/10/02 17/10/02

EP-203A-WS Explosives

EP-203A-WS HMX ug/L 20 <20 <20 <20

EP-203A-WS RDX ug/L 20 <20 <20 <20

EP-203A-WS 1.3.5-Trintrobenzene ug/L 20 <20 <20 <20

EP-203A-WS 1.3-Dinitrobenzene ug/L 20 <20 <20 <20

EP-203A-WS Tetryl ug/L 20 <20 <20 <20

EP-203A-WS 2.4.6-TNT ug/L 20 <20 <20 <20

EP-203A-WS 4-Amino.2.6--DNT ug/L 20 <20 <20 <20

EP-203A-WS 2-Amino-4.6-DNT ug/L 20 <20 <20 <20

EP-203A-WS 2.4-Dinitrotoluene ug/L 20 <20 <20 <20

EP-203A-WS 2.6-Dintrotoluene ug/L 20 <20 <20 <20

EP-203A-WS Nitrobenzene ug/L 20 <20 <20 <20

EP-203A-WS 2-Nitrotoluene ug/L 20 <20 <20 <20



EP-203A-WS Nitroglycerine ug/L 200 <200 <200 <200

EP-203A-WS PETN ug/L 200 <200 <200 <200

EP-203S-WS Explosives Surrogate

EP-203S-WS o-Dinitrobenzene % 1 99 95 90 4



METHOD

Client Reference:


Date Sampled




1 100

17/10/2002 18/10/2002

BH80_ METHOD

MS BLANK

CHECKS AND SPIKES

EP-203A-WS Explosives

EP-203A-WS HMX ug/L 20 111% <20

EP-203A-WS RDX ug/L 20 ---- <20

EP-203A-WS 1.3.5-Trintrobenzene ug/L 20 ---- <20

EP-203A-WS 1.3-Dinitrobenzene ug/L 20 ---- <20

EP-203A-WS Tetryl ug/L 20 ---- <20

EP-203A-WS 2.4.6-TNT ug/L 20 107% <20

EP-203A-WS 4-Amino.2.6--DNT ug/L 20 111% <20

EP-203A-WS 2-Amino-4.6-DNT ug/L 20 ---- <20

EP-203A-WS 2.4-Dinitrotoluene ug/L 20 113% <20

EP-203A-WS 2.6-Dintrotoluene ug/L 20 ---- <20

EP-203A-WS Nitrobenzene ug/L 20 111% <20

EP-203A-WS 2-Nitrotoluene ug/L 20 ---- <20



EP-203A-WS Nitroglycerine ug/L 200 ---- <200

EP-203A-WS PETN ug/L 200 104% <200

EP-203S-WS Explosives Surrogate

EP-203S-WS o-Dinitrobenzene % 1 108 105 4

DISTRIBUTION Groundwater Investigation Water Tower Tip ADI Mulwala 21 February 2003 2 copies Doug Wilson ADI Limited Private Bag 1 Mulwala, NSW, 2647 1 copy Mark Imber Department of Defence CP2-2-135 CSIC ACT SNSW Campbell Park Offices Canberra ACT 2600 1 copy Peter Nadebaum GHD 380 Lonsdale Street, Melbourne 3000 1 copy Defence Library Original Project File Quality Control Reviewer

______________________________________ David Maltby Principal Geological Engineer

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