1. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 1of6
SPECIALISATIONS, INTERESTS & KEY SKILLS:
 Accredited Contaminated Sites Auditor, WA Contaminated Sites Act, Perth–based.
 Contaminated site investigation, remediation & management.
 Risk assessment & GIS techniques.
 +27-years as a hydrogeologist working in the groundwater industry; all aspects of groundwater resource
assessment & sustainable development.
 Numerical & analytical modelling, solute transport, MNA.
Qualifications: Membership:
 B.Sc. (Hons) Geology, Leicester University, 1983  C. Geol. (Chartered Geologist)
 M.Sc. Hydrogeology, Birmingham University, 1988  FGS (Fellow of the Geological Society)
 Member-International Association of Hydrogeologists
 UK IEMA Registered Environmental Auditor
 Member- Australian Water Association
 Full Member No. 197 - Environmental Consultants
Association of Western Australia
CAREER SUMMARY:
Stuart was part of the initial intake of Contaminated Site Auditors accredited in WA at the scheme inception in
2006, currently with over 9-years of continual auditing experience. He is one of a limited number of Auditors
actually based in WA, and is therefore able to provide a highly responsive & cost-effective service. Stuart has
worked in WA since 1995, with government regulators, in the property development, mining, petrochemical &
defence industries, together with the consulting and contracting industries for over 19-years.
In addition, Stuart has been a UK registered Environmental Auditor since 1990. He has over 27-years of
experience as a groundwater consultant and continues to practice as Principal Hydrogeologist and owner of
Hydrosolutions Pty Ltd, an independent consultancy. As a hydrogeologist he has worked throughout Australia,
Hong Kong, the UK and in continental Europe, with prior experience in the Oil & Gas Industry.
CAREER HISTORY:
Dec 2006-present WA Accredited Contaminated Sites Auditor (Perth based)
August 1999-Present Hydrosolutions Pty Ltd, Director & Principal Hydrogeologist
May 1995-March 99 PPK Environment & Infrastructure Pty Ltd., WA, Senior Environmental Hydrogeologist
Oct 1988-April 1995 Aspinwall & Company Ltd., UK. Senior Hydrogeologist, Water Directorate Resourcing Manager
1987-Sept 1988 Birmingham University, M.Sc. in Hydrogeology
1984-1987 Gearhart Geodata Services Ltd. (now Halliburton), UK. Mudlogging/ Data Engineer
1983-1984 Leicester City Council, UK. Audit Department Rebates Officer
1980-1983 Leicester University, B.Sc. in Geology
PERSONAL & CONTACT INFORMATION:
Address: U14, 14 Whyalla Street Willetton, WA 6155 Citizenship: Australian/British
Date of Birth: 1962
Contact: T: +61 8 9457 5448 M: 0403 021533 F: +61 89457 4293
E: stuart.jeffries@hydrosolutions.com.au : https://www.facebook.com/HydroSolutionsAustralia
W: www.hydrosolutions.com.au : http://au.linkedin.com/pub/stuart-jeffries/7/a0b/236
(AUDITOR) EXPERT SUPPORT TEAM:
Stuart is supported by the following Expert Technical Support (ETS) team:
 Dr Bruce Anderson, Planreal Australia, Principal Environmental Scientist: Contaminated Sites Assessment & Management
 Jackie Wright, Environmental Risk Sciences: Air Quality, Human Toxicology, Impacts on soil, water and air quality
 Michael Seignior, Senior Principal, Bluesphere Environmental Pty Ltd: Source-Pathway-Receptor Analysis, Site-Specific
Human-Health & Ecological Exposure Models
 Hugh Scobie, Toxikos Pty Ltd: Source-Pathway-Receptor Analysis, Environmental Toxicology, Human Toxicology, Site-
Specific Contaminant fate and transport Models
 Dr David Allen, MBS Environmental: Chemical/ Analytical Data, Environmental & Analytical Chemistry, Soils Science
 Patrick Clarke, Senversa Pty Ltd: Geological Practice, Soils Science & Geo-Technology, Risk management strategies
 Dr Jenny Stauber, CSIRO Land and Water: Environmental Toxicology
 Maria Davoren, Toxikos Pty Ltd: Environmental Toxicology, Human Toxicology
 Ian Field, Field Environmental technologies: Asbestos

2. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 2of6
EXPERIENCE:
AUDITING: CONTAMINATED SITE & ENVIRONMENTAL:
1. Australian National Railways, Pre-Divestiture Audit, SA. Phase II investigation work to define site conditions,
assess environmental liabilities, & scope remedial requirements. Project value $130k.
2. BHP Billiton Iron Ore, Environmental Audit, Pilbara Iron Ore Operations, WA. Preparation of a Contaminated
Sites Register for all mining/ ore processing sites in the Pilbara.
3. Cory Environmental, Mucking Landfill, Essex, UK. Environmental Assessment, environmental impact to
ground & surface water of a proposed 25 million cubic metre ‘piggy-back’ extension to an existing landfill.
4. Fonterra Australia: Voluntary Audit Report (VAR), proposed commercial/ industrial redevelopment of a large
dairy operation, Malaga
5. Department of Housing & Works. Quattro residential redevelopment, Queens Park, Cannington. Voluntary
audits for four-phases of residential redevelopment affected by asbestos from demolition of former houses.
6. Dow Chemicals, South Glamorgan, UK. Pre-acquisition audit of land adjacent to a PVC factory surrounded by
extensive & varied chemical manufacturing facilities.
7. Greenaways, Environmental Liability Assessment, UK. Management of an audit of 21 operating & closed
landfill sites to identify environmental concerns & associated remedial & aftercare requirements, together with
the apportionment of costs between current & former operators. Project value $120k.
8. LandCorp:
 VAR: Access Industrial Park; possible groundwater impact, Forrestfield Marshalling Yard, Kewdale.
 Mandatory Audit Report (MAR): residential redevelopment of the former Swanbourne High School site.
9. Mammoth Nominees: MAR: residential redevelopment of site affected by asbestos from site demolition.
10. Public Education Endowment Trust/ LandCorp. MAR of site investigation & remedial works at the former
Fremantle Bunkering Fuel Terminal site.
11. Plutonic Goldmine, Meekatharra, Pilbara, WA. Compliance audit of client/ subcontractor operations against
license & regulatory acts.
12. Private Developer, Fremantle, WA. Pre-acquisition audit of a large department store.
13. Sansho Holdings, Darch. Audit of residential redevelopment of a former bus depot & market garden site.
14. Starbrake Ltd, Wangara. Proposed industrial redevelopment next to a gassing landfill
15. City Of Stirling, Water Compensation Basins. Audit of off-label application of herbicide Hexazinone to 8 urban
water compensation basins.
16. Touche Ross Tomatsu, ZSNP Aluminium Works, Slovakia. Advise senior management to aid an assessment
of environmental liabilities by the European Bank for Reconstruction & Development relating to future
investment.
17. Viento Property Group/ SPM Project Marketing: VAR: residential redevelopment of two former chicken farms
for residential redevelopment
18. Wesfarmers Kleenheat Gas:
 MAR: Source site affecting groundwater, former service station at Queens Park
 MAR: Source site affecting groundwater, operating service station, Osborne Park
CONTAMINATED LAND & GROUNDWATER ASSESSMENT:
1. AGR Matthey Pty Ltd, Newburn Refinery, WA. Investigation of groundwater impacts from a precious metal
refining operation, development & implementation of remedial action plan.
2. BHP Billiton Iron Ore, Nelson Point, WA. Preliminary Site Investigation of contamination issues at a former oily
waste water disposal lagoon
3. British Steel Plc, Ravenscraig Steelworks, Motherwell, Scotland. Investigation within worked Coal Measures
used for deep waste disposal of coking & by-product effluents. Assessment of potential resurgence & design
of remediation programme. Project value $520k.
4. Calcott & Downey Heavy Engineering/ Hard chroming works, Kewdale, WA. Investigation of contamination by
hydrocarbons, heavy metals, solvents & hexavalent chrome.
5. Coogee Chlor-alkali plant, Kemerton. Director, Independent review & input to Environmental Improvement
Plan, 3-d characterisation of saline plume, numerical modelling, recovery implementation
6. Coogee Chemicals Pty Ltd (formerly Nufarm-Coogee) Chlor-Alkali Plant, Kwinana, WA. Review of
groundwater impacts, replacement monitoring bores.
7. Coogee Chemicals Pty Ltd, Kwinana Bulk Chemical Storage & Manufacturing plant:
 Implement groundwater monitoring at sulfuric acid terminal
 Design & implement a groundwater monitoring program to meet license requirements
 Investigation of possible off-site groundwater impacts

3. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 3of6
8. Department of Defence: Environmental Restoration of the Naval Communication Station Harold E Holt,
Northwest Cape, WA. Design & implementation of site investigations to assess the extent of soil &
groundwater contamination. Project value $250k.
9. Department of Defence/ ENSR (formerly HLA Envirosciences):
 Defence Integrated Distribution System, Joint Logistics Unit WA. Comprehensive Stage 1 & 2 investigation
of site conditions at two DIDs sites.
 Stage 1 Assessments of Naval Communication Station Harold E Holt, RAAF Pearce
 Support for Technical Audit of RAAF Learmonth
10. Fremantle Steam Laundry: Preliminary Site Investigation, laundry operation.
11. Gwalia Consolidated, Mineral processing/extraction plant, Greenbushes, WA. Desk & site appraisal of a
former tantalite mineral extraction plant.
12. Hong Kong Department of Environmental Protection, Tseung Kwan O Landfill. Investigation of completed &
operational landfill phases, to assess the significance of leachate & LFG generation on seawater quality & its
impact on proposed land reclamation & redevelopment.
13. ICI Merseyside Operations, Groundwater Contamination, Runcorn, UK. Assessment of historical & current site
conditions, chemical processes & waste disposal routes, soil & groundwater contamination at the largest UK
chlor-alkali & chlorinated solvent-manufacturing site.
14. Morton Seed & Grain. Director, Preliminary Site Investigation, former Nagata/ Weston Bioproducts/
Lovestarches flour mill, Cockburn
15. Rio Tinto Pilbara Iron Cape Lambert Operations. Project director for:
 Phase investigation of prolonged large-scale diesel spillages
 Review failure of existing passive recovery system
 Assess options for PSH recovery & long-term management of dissolved phase contamination
 Preliminary site investigation, including anecdotal/ archival research
 Initial drilling campaign
 Hydrochemical sampling to characterise PSH & dissolved phase contamination
 Feasibility of re-injection for disposal of waste-water effluent
16. Rio Tinto/ Hamersley Iron Cape Lambert Operations. Implementation of groundwater monitoring &
assessment of nutrient adsorption potential for a water-water spray field operation
17. Schenectady Ltd Tar Distillers, Staffordshire, UK. Groundwater impact from phenol.
18. Service Station/Oil Storage Depots, WA. Numerous investigations of retail/storage facilities on behalf of Shell,
Ampol-Caltex, Mobil & Wesco Fuels.
19. Thames Water Utilities, Water Quality Assessment, High Wycombe, UK. Archive review of industrial impacts
on major PWS; rehabilitation & future operation. Project value $600k.
20. Tiwest Joint Venture, Kwinana Works WA. Review of groundwater monitoring program
21. US Photochemical Manufacturer, Site Investigation, Merseyside, UK. Investigation of shallow soil/
groundwater conditions overlying a major Triassic Sandstone aquifer. Appraisal of conditions, potential liability,
& need for site remediation works. Project value $120k.
22. Wesfarmers CSBP Ltd:
 Phenol contamination in groundwater, Kwinana, WA. Determine the extent of an organo-chlorine pesticide
plume, & potential impact on process abstraction.
 Review of arsenic groundwater plume, Kwinana, WA. Assessment of extent, & development of remedial
options, with recommendation for pump-&-treat recovery.
REMEDIATION:
1. AGR Matthey Pty Ltd, Cloverdale, WA. Design & implementation of groundwater remedial action plan,
including pumped recovery, treatment & injection. Development of RAP addressing soil & sediment
contamination.
2. Agrochemical Manufacturer, Kwinana, WA. Design, installation & operation of a 10,000-litre phase separated
hydrocarbon recovery operation, at one of WA’s most serious groundwater contamination sites. Project value
$60k.
3. Coogee Chlor-alkali, Kemerton, WA. Design & implementation of a pumped recovery program for a saline
groundwater plume. Project value $500k.
4. Commonwealth Department of Defence, Environmental Restoration Plan, NCS Harold E Holt. A detailed
environmental restoration plan addressing soil contamination was prepared, through the excavation & removal
of contaminated soils to a Class IV secure landfill for low hazard wastes, the first to be designed & built in WA.
Identification & bioremediation of hydrocarbon contaminated soils prior to replacement to the land. Base wide
removal of scrap, restoration of an existing landfill & three asbestos disposal areas, & base-wide restoration

4. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 4of6
through a re-soiling & re-seeding operation. Restoration plan submitted for the 1997 WA Engineering
Excellence Awards. Project value $300k.
5. Water Corporation, Welshpool, WA. Assessment & remediation of diesel & heavy metal contaminants at a
former Water Corporation depot.
6. Rio Tinto/ Pilbara Iron, Cape Lambert, WA:
 Review of alternative options to recover c1.2M Litre diesel spillage from a low-permeability fractured basalt
aquifer.
 Recommendation for dual pump recovery in tandem with skimming
 Long-term management through Monitored Natural Attenuation (MNA)
RISK ASSESSMENT:
1. AGR Matthey Pty Ltd, Groundwater Risk Assessment. Numerical assessment of risk to groundwater resources
from existing contamination, including ecological & eco-toxicological studies.
2. Alcoa of Australia Ltd., Quantitative Risk Assessment, Groundwater Management Plan, Kwinana Alumina
Refinery, WA. A quantitative assessment of the risk from long-term alumina residue storage to the
groundwater & marine environments was undertaken using hydrochemical & numerical modelling techniques.
Development of a long term Groundwater Management Plan, protective of the current & future proposed
protected beneficial uses of groundwater. Total project value $250k.
3. Commonwealth Department of Defence, Contaminated Groundwater Risk Assessment, NCS Harold E Holt,
Northwest Cape, WA. Assessment of risk from residual groundwater contamination impacting groundwater &
marine ecology of the environmentally sensitive Northwest Cape of WA, design & justification of remedial
works. Project value $30k.
4. Private Developer, Health Based Risk Assessment, Proposed Residential Redevelopment of a closed landfill
site, South Fremantle, WA. Design/implementation of geotechnical, contaminated soil, groundwater & LFG
investigations. Preparation of a semi-quantitative human health based risk assessment, examining exposure
routes for fugitive dusts, contaminated soils & groundwater, & the explosive hazard from LFG generation.
Assessment of geotechnical stability for founding. Design & costing of appropriate remedial measures. Project
value $135k.
5. Shell Ltd., Environmental Audit of 54 Oil Storage Depots, UK. Desk appraisal of the environmental sensitivity
of 54 ‘wet’ storage depots throughout the UK, & development of a ranked qualitative risk assessment to identify
priority sites warranting further investigation.
6. Thames Water Utilities, Quantitative Risk Assessment, Gatehampton PWS, Oxfordshire, UK. Quantitative risk
assessment of the potential threat from industrial accidents to impact abstraction quality at the UK’s largest
groundwater supply (70ML/d). Project value $80k.
7. WMC Resources Pty Ltd., Pipeline Risk Assessment, Mt Keith minesite, Pilbara, WA. Quantitative risk
assessment of the operation of a 40-kilometre pipeline conveying hypersaline water from a palaeochannel
aquifer to an 11Mtpa mineral processing plant. Project value $55K.
HYDROGEOLOGY/GROUNDWATER:
1. Anglian NRA, Catchment study, river Wissey, UK. Numerical modelling to assess sub catchment resources as
a management tool to determine abstraction license applications.
2. ATSIC/Ove Arup & Partners, RAESP Programme, WA. Identify groundwater resource targets, supervise
drilling, bore completion & test pumping programme to provide potable water resources at remote Aboriginal
Communities located in the Kimberley, Pilbara & South-west.
3. BHP Billiton Iron Ore Pty Ltd, Port Hedland Rail & Port Operations, WA:
 Hydrogeological review of Nelson Point, Finucane & Redmont operations.
 Review of Groundwater Monitoring Database
 Hydrogeological review, under-harbour tunnel between Nelson Point & Finucane
 Assess closure conditions at former rail ballast quarries
 Develop run-off model for Nelson Point & Finucane
 Groundwater monitoring review of Nelson Point, Finucane Island, Redmont & Boodarie
 Development of a potable groundwater source protection plan.
 Identification & establishment of new potable water supply for rail camp expansion
4. Bauxite Alumina Joint Venture, Bindoon Bauxite Mine. Director, hydrogeological investigation & monitoring,
preparation of Groundwater Environment statement for a Public Environmental Review
5. British Nuclear Fuels Ltd. Drigg Low Level Waste Repository, Cumbria, UK. Construction/ test pumping of
deep bore in the Triassic Sandstone underlying extensive glacial deposits.

5. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 5of6
6. DuPont (Australia) Ltd; Sustainability of water supply; large mining & chemical processing operation in WA.
7. English Nature, Wetland Habitat, Brown Moss SSSI, Shropshire, UK. Appraise water recession at a wetland of
national ecological importance.
8. FQM Australia Nickel, Ravensthorpe Nickel Operations. Director, Rationalisation of groundwater & surface
water monitoring.
9. Geopeko. Peak Hill Goldmine, Pilbara, WA. Groundwater resource development of an additional 1,500kL/d
supply from Bangemall Basin sediments & fractured metasediments.
10. Gwalia Consolidated, Pilbara, WA. Groundwater resource investigation, Wodgina Minesite. Appraise
groundwater prospects, implementation of a drilling & test pumping programme & development of an additional
4,500kL/day process/drinking water supply.
11. Myrup Fly-in Estate, Esperance, WA. Assess conditions & impacts from development adjacent to Lake
Warden Ramsar Wetland
12. National Rivers Authority (now EPA). Assessment of Groundwater Protection Zones, UK National. Collation/
audit of data, & determination of time of travel & total catchment zones by numerical modelling for 750 major
groundwater abstractions throughout England & Wales as part of the national Groundwater Protection Policy.
Total project value $600k.
13. Pioneer Aggregates (UK) Ltd. Mineral extraction with proposed low-level restoration, UK Midlands.
Assessment of mineral land bank, requirements for dewatering & permanent groundwater exclusion structures
for low level restoration with permanent pumping at sites in Lincolnshire & Nottinghamshire.
14. Resolute Samantha, Bulla Bulling Mine, Goldfields, WA. Completion/ test pumping of four new production
bores within palaeochannel sediments.
15. Tarmac Ltd. Dewatering Assessment, Cheshire, UK. Design/ construction of hydrogeological monitoring
network, numerical modelling of site dewatering & settlement implications at a large sand quarry.
16. Thames Water Utilities Fobney, Reading, UK. Assess the sensitivity of river valley location adjacent to a large
urban/industrial area for development of a major new public water supply borehole, incorporating a catchment
risk assessment to the existing surface water supply.
17. Water Corporation: Director, Groundwater investigation & assessment of potential for increased nutrient
disposal by irrigation, Derby WWTP. Project value $190k
18. Westralia Airports Corporation, Perth Airport, WA. Groundwater Resource Investigation. Assess reticulation
needs for future development. Define site hydrogeology, & construction of a subregional numerical
groundwater model to assess resource options & water level changes for site development. Project value
$350k
HYDROLOGY/ SURFACE WATER:
1. BHP Billiton Iron Ore Pty Ltd, Port Hedland Rail & Port Operations, WA:
 Develop surface water run-off model for Nelson Point iron ore processing & shipping site
 Develop surface water run-off model for Finucane Island
 Surface water monitoring program, Nelson Point
 Surface water monitoring program, Boodarie Iron
2. Precious metal refinery, WA; assess surface water & sediment quality impacts to an artificial drain
3. Rio Tinto, Pilbara operations: Nutrient loading to surface water & groundwater from spray irrigation of treated
effluent from a Waste Water Treatment Plant
4. Perth Airport:
 Subregional numerical groundwater model to assess groundwater supported wetlands
 Leakage assessment from surface water compensating dams
OTHER PROJECTS:
1. Global Olivine Western Australia, PER for Proposed WTE&W Plant, Kwinana, WA Project Management &
technical input to the marine, water & land environment sections of a Public Environmental Review (PER) for a
proposed Waste-to-Energy & Water plant.
2. Department of Environmental Protection, Secure Landfill sighting Study, Perth. Identification of suitable sites
within a 120km radius of Perth according to comprehensive sighting criteria using a Geographical Information
System (GIS). Detailed site development costs for a Class IV (low hazard) waste landfill were prepared for the
most prospective sites. Project value $50k.
3. Landfill site investigations, UK & Ireland.
4. Landfill pre-development assessments of a large peat bog in Ireland, a terrace gravel site in SE England
neighbouring two Class ‘A’ rivers, an existing site within terrace gravels above a minor aquifer in Hampshire, an

6. Stuart R JEFFRIES: Accredited Contaminated Site Auditor, Director, Hydrosolutions Pty Ltd
———————————————————————————————————————————————
srjCV_Auditor1 6of6
alluvial gravel site neighbouring an ecologically sensitive salt marsh in Essex. Numerical assessment of the
causes of rising leachate levels within a completed landfill on behalf of insurance loss-adjusters.
5. Private Developer. Proposed Residential Development, Bedfordale, WA. Assessment of effluent loading from
the development, examination of infiltration capacity, nutrient loading & the biological attenuation capacity of
natural soils within the headwaters of a stream catchment. Project value $20k.
6. Water Corporation, Derby: Characterisation & estimation of nutrient loading capacity for the disposal of treated
effluent to an irrigated golf-course & created wetland. Project value $190k.
7. WMC Resources, Deep Waste Injection feasibility study, WA. Desk appraisal of suitable injection horizons
from deep bore & geophysical data. Assessment of injection pressures & solute movement using analytical
models. Geochemical modelling & core/pore water laboratory tests to determine effluent & groundwater
compatibility. Economic appraisal of development costs. Project value $20k.
PUBLICATIONS:
 MJ Morrey, SR Jeffries: The Use of Probabilistic Risk Assessment Techniques for Groundwater Resource
Management & Groundwater Protection. Paper presented at the Fourth Annual Conference on Groundwater
Pollution, London Kensington Hilton, 15
th
& 16
th
March 1995.
 SR Jeffries, in SJT Pollard et al; Risk Assessment for Environmental Management, Approaches & Applications.
Paper presented at Confederation of British Industry/Institute of Waste & Environmental Management
Conference, 1995.
 SR Jeffries, BC Kearsley-Pratt, MJ Dimos, AJ McNulty; Environmental Restoration Plan, Naval Communication
Station Harold E Holt, Northwest Cape, WA. Submission for the 1997 Engineering Excellence Awards,
Institution of Engineers, WA.
 SR Jeffries, BC Kearsley-Pratt, MJ Dimos; Specification of a Class IV Secure Landfill to receive low hazardous
waste on the Northwest Cape of WA. Paper submitted to the 4
th
National Hazardous & Solid Waste
Convention, Brisbane, April 1998.
 SR Jeffries, D Adams, P Robinson, I Zelina; Case Studies in the Application of Risk Assessment Techniques
for Contaminated Site Characterisation in Western Australia. Paper/ poster presented at the Contaminated
Site Remediation Conference, Fremantle, Western Australia, 21
st
to 23
rd
March 1999.
 SR Jeffries, RW Colman, D Cooling; Development of a Groundwater Management Strategy, Alumina Residue
Storage, Kwinana, Western Australia. Paper presented at Hydro 2000, 3
rd
International Hydrology & Water
Resource Symposium, Perth, 20-23 November 2000.