CATERPILLAR INDUSTRY SOLUTIONS / CAT® WATER TREATMENT

CATERPILLAR OEM SOLUTIONS / CAT® WATER TREATMENT Landfill Leachate Treatment What is Cat® Water Treatment?

• Cat® Water Treatment has partnered with HTX Solutions who is at the leading edge of a paradigm shift in wastewater treatment in mining, energy, industrial, and mineral processing plants globally

• Together we have set new benchmarks for cost-effective wastewater treatment, the removal of harmful contaminants, and the extraction of valuable minerals

• Simple business model … pay per volume of water treated – no capital investment required

• Patent-protected Advanced Electrochemical and Catalytically Enhanced Oxidation technologies and expertise, with applications across energy, mining, industrial and other sectors • Cat® Water Treatment is a turn-key, mobile, re-locatable and fully scalable water treatment service with a small operational footprint and cost and environmental benefits

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Water Treatment Solution Spectrum

Caterpillar’s mobile and scalable equipment and processes can be applied to wastewater streams and projects globally; safely removing hazardous and non- hazardous materials. This results in re-cycled water that is available for commercial re-use, or water that is safe for environmental discharge

® Cat Water Treatment Leachate

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HTX & Caterpillar Collaborative Relationship

Strengths Strengths • Intellectual Property • Brand Reputation • Water Treatment Expertise • Machinery / Equipment • Innovative Technology Research Manufacturing Excellence • Ongoing R&D • Global Distribution

Roles & Responsibilities Roles & Responsibilities • Technical Support • Sales and Contracting • System Design • Owns Assets • Cost Optimization Operations • Contract Management • Sales Support

Strengths Roles & Responsibilities • Customer Relationships • Sales Support • Service Excellence DEALER • Customer Satisfaction • Local Presence • Operations & Maintenance

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Benefits for Leachate Applications

• Cat® Water Treatment equipment is mobile, scalable & relocatable • Leachate can be treated at the landfill site • Simplified treatment process, no need for multiple pieces of equipment such as MBR, MBBR, RO, UF, in sequence…no activated sludge or anaerobic lagoons systems needed

• No need to transport leachate to a municipal or 3rd party wastewater treatment facility • No equipment fouling as seen in waste treatment options with membranes or cartridges • Removes the need for managing a biological process for leachate treatment that has a high energy demand

• Renders leachate water suitable for re-use, reclamation and/or safe environmental discharge by removing BOD/COD, ammonia, chlorides, macro inorganic compounds, heavy metals, xenobiotic organic compounds such as aromatic hydrocarbons, phenols, pesticides, coliforms, etc.

• Cat® Water Treatment is an all in one solution that improves leachate water quality before release due to “dial-up” feature for specific water outcomes

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Sustainability Benefits

• Significantly improves water quality, you specify parameters, we deliver • Mitigates environmental compliance concerns • Turns leachate into a revenue stream, the treated water can be sold for agricultural irrigation or reuse in a number of industrial water processes…just to name a few: • Cooling water and boiler water • Equipment cleaning • Re-application to the landfill

• Reduction in energy demand to operate systems such as various forms of aeration and filtration

• Reduce energy expenditure by utilizing landfill generated gas to operate the Cat® Water Treatment unit

• Good corporate citizenship through active participation in water reuse and reclamation

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At a Glance - Initial Offering

USD to 1.8 cents – 6.0 cents* per gallon of treated water to remove total suspended & dissolved solids and produce recycled water for commercial reuse

Unit Features Customer Value Additional Benefits

• Water treatment data insights • Turnkey water treatment services • Flexible service contracts • Customized e-reporting

WT55

• Containerized and mobile • Eliminates capex (water as a service) • Scalable to treat total water • Reduces opex of wastewater hauling volumes (1 unit = up to 220 gpm) • Enables sustainable water recycling • Real-time water analysis • Minimizes regulatory compliance risks • Automated safety management & • 24/7 Operations availability EHS shutdown procedures

*…Price dependent on industry, region and water quality

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Typical Removal Rates of Contaminants

HTX Removal Rate % HTX Removal Rate % HTX Removal Rate % Name Element Name Element Name Element (see Note 1) (see Note 1) (see Note 1)

Metallic Cations Metallic Cations - continued Suspended Solids + Silver Ag 93 Tin Sn 91 Silicon Dioxide (Silica) SiO2 95 - 99 Aluminum Al3+ 99 Uranium U 95 Biological Arsenic As 97 Vanadium V 99 BOD 85 - 95 Gold Au 76 Zinc Zn2+ 99 Bacteria 99.9 Boron B 75 - 85 Calcium Ca2+ 98 Viruses 99.9 Barium Ba 93 - 99 Potassium K+ Minimal Polar Compounds 2+ + Beryllium Be 90 Magnesium Mg 95 - 99 Ammonium Ion NH4 25 - 99 Cadmium Cd 97 Sodium Na+ Minimal Cyanide 99 Chromium Cr 99 Anions and Salts Oils Cobalt Co 83 Fluoride F- 62 - 95 Petroleum / Oils / Grease 99 2+ - Copper Cu 99 Chloride CI Minimal Benzene C6H6 99 Iron Fe2+ / Fe3+ 99 Chlorine Gas CI2=CIO-=ClOH 99 Ethyl Benzene 99 Mercury Hg 98 Bromide Br- Minimal M&P Xylene 99 Manganese Mn 98 Iodide I- Minimal O-Xylene 99 2- - Molybdenum Mo 92 Carbonate/Bicarbonate CO3 =HCO3 95 - 99 Toluene 99 2+ Nickel Ni 99 Nitrite NO2 43 MTBE 99 2+ Lead Pb 99 Nitrate NO3 78 PCB Arochior 1248 86 3- Platinum Pt 85 Phosphate PO4 90 - 99 Water Properties - Antimony Sb 95 Sulfates SO4 95 - 98 Total Dissolved Solids TDS 5 - 90

Selenium Se 76 Calcium Carbonate CaCO3 95 - 99 Conductivity EC 5 - 90

Strontium Sr 75 - 95 Hardness MgCa(CO3)2 95 - 99 Total Suspended Solids TSS 99 Note 1 - All removal rates are indicative only, and are subject to water matrix / interference effects and require lab testing Suspended Solids Turbidity 99 for final confirmation. COD 85 - 95

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Role of Caterpillar

• Provision of Cat® Water Treatment services. • Establish and Manage Client service contracts • Manage payments to Dealers and suppliers as needed • Site assessments and planning for full field scale trials (pilots) and full time service contracts • Obtain water profile both incoming and desired as well as determine optimal water treatment specifications • Training and field service support for Cat Dealers • Mobilization, connection, commissioning and initial testing support at client site • Manufacture Cat® Water Treatment units and manage certifications • Own Cat® Water Treatment units • Provide parts, consumables for Cat® Water Treatment units (as needed) • Provide maintenance schedules for Cat® Water Treatment units, as needed • Provide level 3 and 4 field service support of Cat® Water Treatment units

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Role of Cat Dealer

• Sales and Technical support for Cat® Water Treatment • Site Prep at Client Site. • Mobilization of Cat® Water Treatment Units. • Set-up, connection, installation, commissioning & test of Cat® Water Treatment units at client site. • Provide Electric Power at client site if grid power unavailable. • Operation of Cat® Water Treatment Unit(s) during full field scale trials (pilots) as well as full time service contracts. • Manage consumables for Cat® Water Treatment units (as needed). • Take water samples both incoming and outgoing, as per scheduled frequency. • Maintenance and repair of Cat® Water Treatment units, as needed. • Provide level 1 and 2 field service support of Cat® Water Treatment units. • De-commission and de-mobilization of Cat® Water Treatment units and removal of set-up.

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Cat® Water Treatment Mobile Unit Features

• Containerized and mobile (on trailer or ground) • Scalable to meet all operational needs • Up to 294,000 gallons/day (+200 gpm) per unit • Plug & play installation, set-up and operation • Real-time water analysis • Onboard laboratory • Long service intervals • Treats water at the landfill • Manages contaminant variation in real time without unit recalibration • Automated safety management & EHS shutdown procedures

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Cat® Water Treatment Service Advantages

• Reduces / eliminates need to purchase fresh water • Reduces cost of water transportation or pretreatment • Reduces chemical usage and water storage requirements • Eliminates need for customer labor related to water treatment • Meets or exceeds environmental compliance obligations • 24/7 operation with minimal labor input • Turnkey water treatment services • Flexible service contracts – pay as you go • No capital outlay • Customized e-reporting • Water consumption data analytics and actionable insights

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Recycle, Reuse, Reclaim, Safely Discharge You choose your environmental path forward

Landfill Leachate

Water Cat® Water storage Treatment

Water for reuse at Water landfill storage

Water for reclamaon, resale or environmental discharge(SED)*

* Dependent on constuents, solid waste may be non-hazardous, TCLP land-fillable waste.

Leachate collecon pipe

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Typical Unit Set-up Flowchart

For re-use on Customized specific Treated applications water Leachate Cat® WT 55 Unit

WT 55 WT 55 WT 55 Solids waste Stage 1 Stage 2 Stage 3 for disposal or valuable resource Number of units and stages are dependent on throughput rates, source water quality, and end use water quality requirements.

For re-use or safe Fresh water discharge.

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How to Get Started

• We’ll need an understanding of your water management practices in order to determine your overall potential savings − One year of historical water test results and flow rates − Desired water quality outcome • What chemicals, compounds and metals are expected in the wastewater • Water sampling and testing to verify contaminants and optimal treatment • Cat® Water Treatment team will work with you to deliver a turnkey, best practice, commercially attractive, environmentally friendly wastewater treatment solution • Execute Pilot Agreement and work with Cat® Water Treatment team to conduct trial to establish service agreement parameters

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Have a Water Challenge? Problem Solved. 16 / Caterpillar Confidential: Cat® Water Treatment