Imagine the result

for theMining Industry

Imagine the result

INNOVATIVE, SUSTAINABLE AND GROUNDED SOLUTIONS

Innovative, Sustainable and Grounded Solutions for the Mining IndustryThe challenges faced by the mining industry in today’s global business environment are increasing in scope and complexity. By combining specialized expertise in the environmental and engineering fields with a working knowledge of mining processes, ARCADIS delivers tailored solutions that address the specific needs of the mining industry and that make solid business sense.

ARCADIS’ core principles of technical innovation, excellence in project delivery, and emphasis on health and safety in all our activities distinguish our mining team. Our local project teams leverage our global geochemical, environmental and engineering expertise to manage costs. As a result, local multi-disciplinary teams of professionals can be rapidly deployed, apply solutions across our clients’ business units and country locations, provide unified quality control between facilities, and access critical local knowledge, networks and contacts.

ARCADIS serves as a true trusted advisor. We strive to partner with our clients, align with our clients’ goals, strategize to achieve them, and then go beyond our clients’ expectations in delivering value. Our clients’ problems are our challenges! Our cost-effective mining solutions span the entire mining lifecycle helping our clients to reduce risks, free up capital, reduce reclamation costs, and maximize resource recovery and profits.

ARCADIS SERVES AS A TRUE PARTNER

We Have Comprehensive Mining Services

ARCADIS provides comprehensive mining services. Whether our clients are exploring new mining opportunities, an operating mining entity, or dealing with mined land closure liability, ARCADIS professionals have a proven history for providing innovative, common-sense solutions.

Our approach to mining services is to include innovative remedial and sustainable techniques in every aspect of our service offerings helping our clients reduce risks, free up capital, minimize costs, and maximize resource recovery and profits. The results reduce delays, provide closures that are acceptable to regulatory agencies, and create redevelopment opportunities for our clients.

EXPLORATION AND LIFECYCLE PLANNING

Planning and Permitting

• Plansofoperation

• Reclamation/revegetation

• Erosion/sedimentcontrol

• Habitatconservation/management

• Visualmanagement

• Landscapedesign

• Mitigation

• Aquifer/groundwaterprotection

• Airandmodifications

• Waterandstormwater

• Sitingandrights-of-way

• Wastemanagement

Baseline Studies

• Aestheticresourceevaluation

• Surfaceandgroundwater

• Archaeological

• Environmental/duediligenceaudits

• Socioeconomicsandlanduse

• Environmentalimpactstatements

• Publicandstakeholderinvolvement

MINING OPERATIONS

Regulatory Compliance

• Duediligence

• Permitcomplianceaudits

• Environmentalmanagementsystems

• Productstewardship

• Environmentalhealthandsafety

Water Management

• Waterbalancemodeling

• Watersupplydevelopment

• Spillprevention

• Stormwaterdesignandmanagement

• Watertreatment,storageandconveyance

• Processwatertreatment

Mine Waste Technology

• Minepitlaketreatment

• Acidminedrainageprevention

• In-situreactivewallandreactivezones

• In-situbioremediationandintrinsicbio-attenuation

• Fugitivedustcontrol

• Phyto-remediation

• Soilwashing/stabilization

• Tailingsdisposaldesign

RESTORATION AND SUSTAINABILITY

Planning and Permitting

• Riskassessment

• Humanhealth

• Ecological

• Environmental

• Social/economic

• Cultural

Closure/Reclamation

• Reclamationplanning/monitoring

• Wastereclamation

• Demolition/decommissioning

• Dewatering/groundwatercontrol

• Geochemistryandgeophysics

• Geology/hydrogeology

• Geostatisticalandmetallurgicalmodeling

• Geotechnicalinvestigations/analysis

Natural Resource Damage

• Habitatequivalencyanalysis(HEA)

• Resourceequivalencyanalysis(REA)

• Economicvaluation/modeling

• Injuryanddamageassessments

• Naturalresourcetrusteenegotiations

• Designandimplementationofrestorationprojects

BaselineStudies

WaterManagement

Planning

Permitting

RequlatoryCompliance

NaturalResource Damage

Mine WasteTechnology

RiskAssessment

Closure/Reclamation

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Our Services

ARCADIS professionals have a proven history for providing innovative, common-sense solutions.

INNOVATIVE, SUSTAINABLE AND GROUNDED SOLUTIONS

BaselineStudies

WaterManagement

Planning

Permitting

RequlatoryCompliance

NaturalResource

Damage

Mine WasteTechnology

RiskAssessment

Closure/Reclamation

EXPLORATION

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Exploration and Lifecycle Planning

ARCADIS understands that the development of a mine consists of related steps that systematically build upon one another. We develop exploration and mine plans at the beginning of the project that recognizes the potential adverse effects mining can have on the environment. We help assess and document the pre-mining site characteristics and work with mine engineers to design mine facilities that minimize environmental footprint and assist implementing planning and permitting with the post-mining redevelopment/land reuse in mind.

Groundwater Flow Model Estimates Dewatering Requirements for the Life of the MineAlaska

Aproposedcoalminedevelopmentencompassesapproximately5,000acresonthewestsideofCookInletandincludesthreehydrologicbasinsdischargingintotheChuitnaRiver.ARCADISdevelopedagroundwaterflowmodeltoassesspotentialimpactstowaterresourcesassociatedwiththeproposedcoalmine,tosupporttheEnvironmentImpactStatement(EIS),andtoaddressregulatoryconcerns.Modelcalibrationresultsforsteady-stateandtransientconditionsindicatethatthemodelcansimulateaverageandseasonalwaterlevelsandbaseflowswithinthebasinswheremostofthepotentialstreambaseflowandwater-leveldrawdownimpactsareexpectedtodevelop.Thismodelisapowerfultoolthatcanbeusedtopredictpotentialactiveandpassiveinflows,streambaseflowdepletion,andwater-leveldrawdownconsequencesassociatedwiththeproposedcoalmine.

Science of Mineralogy Addresses Stakeholder Concerns and Supports Sustainable Mine Expansion PlanCalifornia

GoldenQueenMiningCo.Ltd.wantstodevelopagoldandsilver,openpit,heapleachoperationonitsSoledadMountainproperty.Detailedpast,present,andfuturemineprojectsiteconditionshadtobedeterminedtoprepareaminedevelopmentplanandobtainpermitting.ARCADISutilizedconceptualsitemodels(CSMs)tounderstandtheexistingsiteconditionsandtopredicttheenvironmentalfateandbioaccessibilityoftraceelementspresentinore,wasterock,leachedresidues,andtheprocesssolutionusedinheapleachoperations.TheCSMspresentedacompleteunderstandingofarsenic,itschemicalform,andenvironmentalstability.Thegeochemicalandmineralogicalinvestigationsaidedinhazardousairpollutantmodelingandgroundwaterprotectionevaluations.UsingthescienceofmineralogytodevelopaCSMforeveryphaseoftheproject,ARCADISdefinedtheextentofenvironmentalandhumanhealthimpactsthatmustbemanagedduringthemineralextractionprocess.Inturn,asustainablemineexpansionplanwasdevelopedthataddressedallstakeholderconcernsandwasadaptabletopendingnewcyanideandmercuryemissionsregulations.

Innovative Database Design Eliminates Data Gaps for Baseline StudiesAlaska

TheDonlinGoldpropertyisaknowngoldresourceinwesternAlaska.ARCADISpersonnelhavebeenintegrallyinvolvedinnaturalresourcestudiesforboththeminesiteandpipelinecorridorsince1997,supportingtheworkfortheeventualEISthatisexpectedtobepreparedfortheproject.ThroughestablishedrelationshipswiththeAlaskaNativesandsurroundingcommunity,ARCADIShasdesignedandconductsqualitybaselineandbackgroundstudies.Thegoalistodevelopanenvironmentalevaluationdocumentthatintegratesover10yearsofbaselinestudiesandanalysisintoacomprehensive,easy-to-understand,report.ARCADIShasdevelopedaninnovativeregulatoryandcompliancedatabasethatintegratesessentialprojectspecificinformationforoperationalstafftouseinthefield.Thedatabaseeliminatesgapsoroverlapsininternalmanagementpracticesandregulatorycompliance.Becauseofoursustainedinvolvementontheprojectthroughseveralphasesofownershipandoperatingmanagers,wehavebeenabletodeliverconsistentenvironmentalbaselineprogramsandmanagetheresultantdatasoourclientcanmakeinformedprojectdecisions.

INNOVATIVE, SUSTAINABLE AND GROUNDED SOLUTIONS

Project Highlights

BaselineStudies

WaterManagement

Planning

Permitting

RequlatoryCompliance

NaturalResource

Damage

Mine WasteTechnology

RiskAssessment

Closure/Reclamation

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Mining Operations

Because of fluctuating commodity prices and rising operating costs, the mining industry is focused on operational efficiencies to safeguard financial success, environmental stewardship, and corporate social responsibility. We have a diverse staff including geologists, hydrogeologists, geochemists, specialty engineers, and regulatory specialists that assist with operation regulatory compliance and water and waste management to reduce operating costs, improve utilization, and reduce waste for your operation.

New Plan of Operation Sets State StandardsSouthwest

Theoriginalmineplansforthreepotashfacilitiesweredevelopedbythefivepreviousmineownersandhadnotbeenupdatedsince1977,resultingininsufficientrecordkeepinganddatagaps.Theplansofoperationforthepotashminesandsupportfacilitiesneededtoaddresscurrentfederalandstateenvironmentalregulations,theSecretary’sPotashOrder,andprovidetheclientandtheBureauofLandManagementwithwell-organizedoverviewsofhistorical,currentandplannedoperations,minemodifications,andregulatorycommitments.ARCADISutilizedaphasedapproachtoupdatethemineplans.Thisallowedastructureandscheduleforproductionofqualitydeliverableswhilecontrollingcostsbyadjustingthescopeofworkasexistinginformationwasdevelopedandreviewed.ARCADISdesignedanextensiveinformationdatabaseandfilingsystemforeachfacilityinwhichreferencedocumentsthatsupporttheupdatedmineplanscaneasilybeaccessed,andnewdatacanbeinputtokeepplanscurrent.Thenewmineplanshavedocumentedlegacyissues,descriptionsoftheexistingoperations,andflexibilitytoevolvewithfuturefacilityupgrades.ThisisthefirstcompanyintheSecretary’sPotashAreatobeaskedtoprovidemineplanupdatessettingthebarforotherpotashminesinthisstate.

First of its Kind Emissions Testing Affects Permitting PolicyWestern State

TheregulatoryagencyrequestedamassbalanceapproachtoestimateVolotileOrganicCompound(VOC)emissionsfrommillingprocessesataminesite.ARCADISassistedtheclientinrespondingtoregulatoryagencyrequestsbydirectlymeasuringandaccuratelyquantifyingfugitiveandnon-fugitiveVOCemissionsfrommillingoperationsandtailingsinordertodevelopreliableVOCemissionfactorsforairpermitting.AftertworoundsofVOCemissionstestingunderregulatoryagencyobservation,robustdatasetswereproduceddemonstratingthatthemassbalanceapproachwasflawedinaccuratelypredictingemissionssources.Theregulatoryagencyacceptedthedatafromthetestsandtestreportsforthepurposesofdevelopingamodificationtothemill’sexistingpermit.Boththeregulatoryagencyandtheclientrecognizedthescientificeffortassociatedwiththesetestingprogramsandsuggestedthattheworkisofpublicationquality.

Innovative Approach Meets New Strict Discharge Standards, SustainablySouth America

AgoldmineinSouthAmericautilizeslargevolumesofwaterdailytomeetmillingprocessneeds.Conventionalwatertreatmentplantsmeetlocalsurfacewaterdischargeregulations,butrecentchangeshavemadethesestandardsmorestringent.Tocomplywithnewregulations,ARCADISgeochemists,watertreatmentengineers,andcivilengineersdevelopedanewtreatmentprocessthatreliesonsustainablebiologicalprocessestocatalyzewatertreatment.Byaddingorganiccarbon,theprocesstransformsnutrientsinthewaterintonon-toxicendproducts,whilemetalsaretransformedtolow-solubilitymetalsulfideprecipitateswhicharecapturedandretained.

Theprocessrequireslittleadditionalpower,relyinginsteadontheactionofnaturallyoccurringmicroorganisms.ARCADIStestedtheprocessatthebenchscale,andalsodevelopedthedesignofafull-scaletreatmentsystemutilizingexistingwasterockdumpstoconstructtreatmentunits.Byreclaimingandusingareasoftheoperatingmineforwatertreatment,theinnovativebiologicaltreatmentapproachwillachievesustainabilitygoalsforenergyconservation,re-useofmineproperty,andcreationofinnocuousendproducts.

INNOVATIVE, SUSTAINABLE AND GROUNDED SOLUTIONS

Project Highlights

BaselineStudies

WaterManagement

Planning

Permitting

RequlatoryCompliance

NaturalResource

Damage

Mine WasteTechnology

RiskAssessment

Closure/Reclamation

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Restoration and Sustainability

The final process of the mine lifecycle is closure. ARCADIS provides closure planning for mines at all stages, keeping post-mining sustainable land use at the forefront. This forward thinking approach allows site-specific solutions to complex systems. We apply our mining technologies to reduce costs for our clients and provide freedom from future remediation responsibilities and regulatory uncertainty. Our goal is to save our clients money, reduce environmental liabilities, and help successfully obtain closure without lengthy post-closure monitoring requirements. Once the business plan is in place and the strategy for regulatory closure is laid out, we think to the future for sustainable use of the land and water holdings.

Comprehensive Holistic Plan Provides Sustainable Long-term Site RestorationCanada

InnorthernManitoba,aminewasabandonedafterdecadesofoperation,duringwhichmorethan13milliontonsofcopperandzincorewereminedandmilled,andthetailingsfromthemillingoperationwereusedtobackfilltheslopes.Significantacidminedrainageresultedfromthesitecontaminatingthesurroundinglandscapeandlakes.ARCADISwastaskedwithdevelopingacomprehensiverehabilitationplanfortheentiresitethatcurtailsacidgenerationandallowsforecosystemrestorationasafinal,sustainablesolution.ARCADISutilizedaconceptualsitemodel(CSM)toincorporatebothhistoricalandnewlyacquireddataacrosstechnicaldisciplines.Basedonthemodel,adesign-buildrehabilitationwasdeterminedtobethebestsolutionthatcouldbeadjustedasneededforalong-termsolution.Tocurtailacidminedrainage,animpermeablecoverandengineereddrainagesystemwasinstalled.Theimplementationplanalsoincludedconsolidatingmillsitetailings,installingsemipermeablerockcoveronfinetailings,engineeringdrainagechannelstopreventrunoffcontactwithtailings,andrestoringlakesbybulkneutralizationandnutrientadditiontofacilitatecontrolledalgaerecolonizationandrevegetation.

Economical, Technically Sound Alternative Pit Lake Water Treatment Southwest

Theconcentrationsofmetalsinalargepitlakehaveincreasedovertime,resultingintheneedfortreatment.Conventionalpumpandtreatremedycouldnotbeusedbecauseverystablesolublemetalsforminthepitlake.Tocomeupwithanalternativesolution,ateamofARCADISgeochemists,remediationengineers,andwatertreatmentexpertsdevelopedanin-laketreatmentapproachbasedonthewaterchemistry.Thein-laketreatmentstrategycausesmetalstoprecipitatefromsurfacewaterinastableformandprovidestreatedwaterforre-useinminingprocesses.Theeconomical,technicallysoundapproachhasbeenproventhroughextensivetesting,forfull-scaletreatmentofthepitlake.Theendresultinvolvesstablemetalprecipitatesthatareresistanttoleachingoverthelongterm.Onceimplementedatfullscale,thissustainablestrategywillprovidetreatedwaterforre-useinmineoperationprocesses.

Design Streamlined Construction for Smelter Closure and Allows Site RedevelopmentEl Paso, Texas

TheASARCOTexasCustodialTrustanditsTrustee,ProjectNavigatorLtd.engagedARCADIS’servicestoassistwithcleanup,restorationandclosureoftheElPasosmeltersite.ThesiteissituatedjustabovetheRioGrandeandhasenvironmentalimpactstosoils,groundwaterandsurfacewater,aswellasresidualslagfromover100yearsofsmeltingoperations.ARCADISisdesigningandconstructingastateoftheartCategory1landfillfacility(Cell4)thatwillcontain200,000cubicyardofimpacted-soil.Thisdesignsolutionaddressesmultiplestakeholderobjectives,andexpeditestheprojectschedulewhileremainingflexibletochangesthroughouttheproject.Innovativeclosuredesignstrategiesinclude:zerovalentirontreatmentwithinpermeablereactivebarriers,multi-layeredgeosyntheticlinersystemincludinggeosyntheticclayliner,60milHDPEmembrane,andgeosyntheticdrainagecomposite.Cappingandslopestabilizationoftheformerplantfootprintarealsoincludedinthedesigntoallowpost-closurebeneficialredevelopmentofthesite.

INNOVATIVE, SUSTAINABLE AND GROUNDED SOLUTIONS

Project Highlights

ARCADIS U.S., Inc.

630 Plaza Drive

Highlands Ranch, Colorado

80129

www.arcadis-us.com

About ARCADIS:

ARCADIS is a leading international company providing consultancy, design, engineering and management services in infrastructure, water, environment and buildings. We enhance mobility, sustainability and quality of life by creating balance in the built and natural environments. ARCADIS develops, designs, implements, maintains and operates projects for companies and governments. With 22,000 employees and more than $3.3 billion in revenues, the company has an extensive global network supported by strong local market positions. ARCADIS supports UN-HABITAT with knowledge and expertise to improve the quality of life in rapidly growing cities around the world.

Together we can do a world of good.

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