Resume - Environmental geotechnist/geoscientist role

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Resume #27485

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PROFILE

I am an Environmental Geoscientist with experience in hydrogeology, groundwater contamination, pyrite weathering (acid rock drainage - ARD) and solute transport in mine waste rock and tailings. My particular areas of interest include the analysis of hydro-geochemical systems for long-term mine site rehabilitation, pit-lake hydro-geochemistry and groundwater-surface water interactions at minesites.

RELATED ESPECIALISED SKILLS

Possess solid understanding on:
1. Ground- surface-water quality assessment: (fate and transport of solutes, monitoring techniques and assessment of effects from both point and non-point sources).
2. Geotechnical, hydrogeology and hydro-geochemical assessment of contaminated sites and related waste material.
3. Acid mine drainage (AMD) prediction, prevention and remediation techniques.
Geotechnical assessment of waste rock/tailing stacks.
4. Implementation of programmes for disposal of solid mine waste material.

RELATED STRENGTHS

1. Analytical
2. Sound problem solving skills
3. Innovative in approach new techniques
4. Strong commitment for team work
5. Research and project management

EMPLOYMENT HISTORY
Jan 2008 – Current
Senior Environmental Geoscientist
GHD Pty Ltd - Western Australia
Key Duties:
a) Hydrogeology and hydrogeochemical evaluation of contaminated sites and groundwater contamination.
b) Hydrogeology and hydro-geochemical assessment (e.g., solute transport and processes) of waste rock/tailing dump facilities at mine sites.
c) ARD investigations and related projects management.

2006 – December 2007
Environmental/Senior Environmental Geoscientist
EWL Sciences (Energy Resources Australia Pty Ltd – Rio Tinto Group)
Earth-Water-Life Sciences Pty Ltd is a company of highly qualified and experienced environmental specialists based in Darwin but with staff in Victoria, Western Australia and Queensland. My role within the team predominantly addresses topics related to hydrogeochemistry, hydrogeology and soil science (both soil physics and chemistry).
Key completed projects
Project Manager of:
1.- Groundwater remediation beneath the Ranger Uranium Mine tailing storage facility (TSF).
Overall program aimed to present an understanding of TSF seepage processes and potential effects on groundwaters beneath and around the TSF.
2.- Review of Rangers statutory and operational boreholes as part of the long-term minesite rehabilitation programme
Overall project reviewed the validity of statutory and operational groundwater monitoring programs in relation to long-term groundwater management.
3.- Phase 2 contamination in the Regolith groundwater (Ranger Mine Operational and Landfill Areas)
The project in order to develop long-term plans to rehabilitate the operational areas in relation to mine site closure completed a hydrological and hydrogeochemical evaluation of contaminated sites at Ranger's operational areas.
4.- Assessment of water quality & the origin of surface pools – Ranger TSF
Project collated and interpreted historical and recent water quality data from samples attained in observation bores (OBs) and seepage pools near the TSF. Hydrogeochemistry data evaluation and geochemical modelling were the key tools to interpret overall seepage pool water quality and its influences on the surrounding environment.
5.- Aquatic sediment monitoring (Woodcutters)
The project completed a geochemical characterisation and evaluation of fate and spatial distribution of metals in sediments within the mine biopolishing pond and creek sediments from Woodcutters and Coomalie Creeks.
6.- Installation of observation boreholes and piezometers around Ranger's TSF
Projects were developed to monitor potential groundwater contamination due to TSF seepage influences and groundwater pattern modifications resulting from the raising of the TSF walls.

November 2005 – February 2006
Project Scientist/Geochemist
Water Management Consultants Pty Ltd.

Water Management Consultants (WMC) is an international group specialising in the development, management and environmental protection of water resources. Company provides technical services in a wide range of disciplines, including hydrogeology, geochemistry, and other related disciplines. My role predominantly addressed hydrogeochemistry related issues.

Achievements:
1. Investigated and analysed hydro-geochemical systems for long-term mine site rehabilitation and this included:
a) Pit-lake hydro-geochemistry modelling.
b) Ground-surface water: water balance and hydro-geochemistry data analysis.
2. Developed a short research on upscaling hydro-geochemical laboratory data to field medium conditions.

2003 – 2004 Researcher (Tailing Dumps and Processes of Acid Mine Drainage Formation and Management)
Sons of Gwalia Ltd
Research topic: The role of episodic flushing on the Formation of Acid Mine Drainage

Achievements:
1. Characterized tailing materials (Physical, geochemical)
2. Characterized hydrological properties of tailing materials and tailing waste cover

1998 - 1999 Researcher
Auckland University of Technology (AUT) - (Auckland, New Zealand)
Reported to the Director of Trace Element Research Group (TERG). The position involved the development of a short research on "geochemical experiments to simulate and remediate acid mine drainage (AMD)". In order to remove a trace metal Zn2+ from an aqueous solution, the research investigated the adsorption/co-precipitation of Zn2+ onto/with iron hydroxide [Fe(OH)3].

1996 - 1997 Researcher
Solid Energy - Stockton Open Cast Coal Mine – (Westport, Buller District, New Zealand)
Reported to the Assistant General Manager of Stockton Mine Site and to the Research Leader Canterbury University. The position involved responsibility for collection and evaluation of solid and liquid samples, implementation of monitoring programmes and techniques for sample and data collection, and geological and engineering geological mapping.

Achievements:
1. Physical, chemical and mechanical characterisation of waste rock materials
2. Assessed surface waters and underflow (leachate) quality as critical factor en long-term mine-site rehabilitation
3. Implemented and evaluated innovative static and kinetic tests to predict acid mine drainage. For this several column and humid cells were performed
4. Assessed stability of overburden waste rock stacks as integral part of the rehabilitation programme
5. Implemented guidelines for acid mine drainage (AMD) management

QUALIFICATIONS

2005 PhD - School of Earth and Geographical Sciences, The University of Western Australia

Research topic: "Pyrite weathering and lithium (Li+) transport under unsaturated flow conditions in model and mine-tailing systems"

Chapters/manuscripts resulting from the research (currently reviewed for publication):
1. Hydraulic properties of porous media mixtures: a case of tailing-sand mixture
2. Pyrite oxidation at circum-neutral-pH: Influence of moisture content and implications for mine-waste management in semi-arid/arid environments
3. Sulphide (pyrite) oxidation at circum-neutral pH as affected by water content and flow regime
4. Lithium (Li+) transport in reactive mafic rock tailings at variably saturated water flow

1998 Master in Science (Honours) - (Environmental Science) - University of Canterbury, Christchurch, New Zealand

2000 Postgraduate Diploma in Applied Science (International Practice) – Auckland University of Technology

1995 Bachelor of Science - (Geology) - The University of Auckland, Auckland, New Zealand

1989 Engineering Geology Certificates - National University "Daniel Alcides Carrión", Cerro de Pasco, Pasco, Perú

Professional Affiliations, Activities and Achievements
1. Member and organizer of the Environmental Science Group of the World Network of Peruvian Scientists (WNPS - http://www.rmcp-peru.org/). Reviewed peer papers presented to the group of Environmental Science during the First (2003), Second (2004) and Third (2005) International Conferences organized by WNPS (Lima, Perú). Current member of the Scientific Committee of the Environmental Science Group (WNPS)
2. Member of the Geological Society of Perú

PUBLICATIONS

1. Scientific note
Alarcón León, E. (2005) ¿Es la industria minera una actividad que genera conflicto social? (Is the mining industry an activity that triggers social conflicts? GeoAgenda, Edición N° 18, Lunes 29 de Agosto del 2005. Sociedad Geológica del Perú. 4pp http://www.sgp.org.pe/julio05/indice.htm

2. Peer reviewed papers
Alarcón León, E, Rate AW, Hinz C, Campbell GD. (2004) Weathering of sulphide minerals at circumneutral-pH in semi-arid/arid environments: influence of water content. SuperSoil 2004: 3rd Australian New Zealand Soils Conference, 5 – 9 December 2004, University of Sydney, Australia. Published on CDROM http://www.regional.org.au/au/asssi/.1-7
Alarcón León, E, Anstiss R. (2002) Selected trace elements in Stockton, New Zealand, waters. New
Zealand Journal of Marine and Fresh Water Research, 36: 81-87

3. Conference papers and posters
Alarcón León, E., Hinz C, Rate AW, Campbell GD. (2005) Influence of water content on pyrite weathering at circum-neutral pH and its relevance for arid environments. Fifth Australian Workshop on Acid Drainage. 29-31 August 2005, Fremantle, Western Australia, ACMER Australian Centre for Minerals Extension and Research. 12 pp
Alarcón León, E., Hinz C. (2004) Hydraulic properties of mine tailing-sand mixtures. Poster presented at the SuperSoil 2004: 3rd Australian New Zealand Soils Conference, 5 – 9 December 2004, University of Sydney, Australia. Website www.regional.org.au/au/asssi/
Alarcón León, E. (2002) Selected trace elements for assessment of AMD in the Stockton, New Zealand case. Poster presented at the Future Soils Conference, 2-6 December 2002. The Australian Society of Soil Science Incorporated
Alarcón León, E. (2000) Geochemical tests to assess the potential for acid mine drainage generation, Stockton open cast coal mine, Buller Coalfield, New Zealand. Resúmenes del X Congreso Peruano de Geología, capitulo IV (Geología Ambiental). Sociedad Geológica del Perú. Resúmenes pp. 121. CD (Código GA1a) 16 pp

4. Reports, thesis and others
Alarcón León, E., Puhalovich, A., (2007) Review of current groundwater monitoring (operational & statutory) at ERA Ranger Mine. Report held at the EWL Sciences. 32 pp
Alarcón León, E., Puhalovich, A., Klessa, D.A. (2007) Assessment of water quality & the origin of surface pools – Ranger TSF. Short Report held at the EWL Sciences. 11 pp + Appendixes
Alarcón León, E., Jones, C., Noller, B., Diacomanolis, V., Ng, J. (2007) Woodcutters Sediment Monitoring 2006. Draft report held at Newmont Australia. 42 pp plus Appendixes.
Alarcón León, E., and Puhalovich, A. (2007) Observed seepages in the region of the Ranger tailings storage facility: construction of the wall raise to RL+47.5 (2006). Short Report held at the Ranger Uranium Mine. 8 pp
Alarcón León, E., Gellert, C., and Puhalovich, A. (2007) Position Paper: Current status of contaminated sites at Ranger Mine and proposed way forward. 5pp
Alarcón León, E., Gellert, C., and Pillai, M. (2007) Groundwater Contamination in the Ranger Mine Plant Area –Phase 2 Investigations. Report held at the Ranger Uranium Mine. 64pp
Alarcón León, Edgardo (2007) Drilling program and installation of piezometers around the Ranger tailings storage facility (TSF). Short report held at the Ranger Uranium Mine. 17pp
Alarcón León, E. (2005) Pyrite weathering and lithium (Li+) transport under unsaturated flow conditions in model and mine-tailing systems. PhD thesis lodged at the University of Western Australia, Australia. 138pp
Alarcón León, E. (2002) Influence of episodic flushing on the Formation of Acid Mine Drainage: Implications for mine waste management in semiarid environments. Short Report on the Physical and Chemical Assessment of the Tailing Samples from Nevoria TSF – Cell 2 (Nevoria Gold Mine-Sons of Gwalia Ltd.). 6 pp
Alarcón León, E. (2000) Environmental geotechnical studies: Evaluation of performances of long-term acid rock drainage (ARD) remedial measures. Report on acid mine drainage studies (AMD) to the United Nations Educational, Scientific and Cultural Organization (UNESCO). 33pp
Alarcón León, E. (1999) Geochemical experiments to simulate and remediate acid rock drainage (ARD).Report submitted to the Trace Element Research Group (TERG), Auckland University of Technology, New Zealand. 27pp
Alarcón León, E. (1997) Long Term Mine Site Rehabilitation Studies at Stockton Open Cast Coal Mine. Masters thesis lodged at the University of Canterbury, New Zealand. 396pp
Alarcón León, E. (1996) Progress Report for Long Term Mine Site Rehabilitation, Stockton Coal Mine. Lodged at the Solid Energy (Stockton Coal Mine), New Zealand, 59 pp

GRANTS AND AWARDS

2004 Thesis completion Scholarship (The University of Western Australia)
2003 Research Scholarship (Sons of Gwalia Ltd., Mining Company)
2000 United Nations Educational, Scientific and Cultural Organization (UNESCO) Fellowship Bank Scheme
1996-1997 Research grant from Stockton Coal Mine, New Zealand

OTHER SPECIALIZED SKILLS

1. Geological Explorations. Geological and engineering geological mapping
2. Computing skills (various packages, e.g. PHREEQCI, 2, HYDRUS 1D, AutoCAD R12 and R13, MSOffice 2000 - XP, Free Hand and Corel Draw Families)
3. Languages (English, Spanish)
4. Current Drivers License (Class C)

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