. All rights reserved MAR Systems Inc. Technology for Clean Water Sorbster™ Media for Water Treatment Wastewater, leachates, ground water and ponds . All rights reserved MAR Systems Inc.

Sorbster™ Media Properties Removal of soluble heavy metals from water by chemisorption Bonding at chemically enriched sites throughout enhanced alumina-based media High adsorbent capacity: Up to 75% by weight Ability to reach ultra low levels (ppb and ppt) Effective across broad pH range: pH 3 to 10 Does not support bacterial growth Multi-metal removal in single water pass No ancillary waste stream Low fouling potential Low energy requirement Passes TCLP for non-hazardous disposal option . All rights reserved MAR Systems Inc.

Sorbster™ Adsorbent Media Types Sorbster (Sorbster MM, Sorbster Hg, Sorbster Se) Multi-metals removal Selenium Optimized Mercury Optimized Sorbster F, Sorbster Cu Fluoride Copper Sorbster Si Silica Water flow is the only control parameter Establish water-to-media contact time Reacted chemistry provides adsorption sites for both soluble cations and anions Aluminum, ammonia and iron sites rapid bonding of selenite and selenate anions Sulfur and oxide sites rapid bonding of cationic selenium, mercury, cations Avoid surface active chemistries that can coat surface sites and sustained levels of free oxidants . All rights reserved MAR Systems Inc.

Sorbster™ Selective Adsorption Capability Most Typical Water Ions Do Not Interact & Pass Through Sorbster™ Media Contaminants Removed Mercury Arsenic Selenite Copper Fluoride Selenate Cadmium Thallium Vanadium Tin Barium Hexavalent Chromium Antimony Cobalt Silica Lead Zinc Up to 99% removal to achieve Mercury <1.3ppt Selenium < 1.0 ppb Boron Molybdenum Nickel Cyanide Inlet to Sorbster™ (ppm) Outlet of Sorbster™ (ppm) Chloride up to 20,000 ppm Calcium up to 3500 ppm Magnesium up to 6000 ppm Magnesium up to 6000 ppm Sulfate* up to 89,000 ppm Sulfate* up to 89,000 ppm Iron and Aluminum up to 10 ppm Iron and Aluminum up to 10 ppm This table shows client water results, these are not maximum levels for the media *Occasional sulfate removal to 30% maximum . All rights reserved MAR Systems Inc.

Opportunities for Sorbster™ Use Alternate for/ replacement of: Hydroxide/sulfide/ carbonate/iron precipitation Chemical/polymeric precipitation Ion exchange R/O Carbon adsorbents Membrane Bioreactors Dilution Polish: Remove low metals levels to accomplish discharge limits behind existing processes Pretreat: Remove bulk of contaminant before another process . All rights reserved MAR Systems Inc.

Contaminated Water Stream Sorbster™ Media Application Contaminated Water Stream Clean Water Deployed in industry-standard vessels Pump and Treat Application Temporary application Leased/rented equipment Quick contacting time for smaller equipment footprint & lower capital cost Water flow rate is the only control parameter Breakthrough determined by monitoring effluent Lead-lag vessels for continuous operation during change out Flow Through Sorbster Media . All rights reserved MAR Systems Inc.

Flow-Through and Passive Treatment Options for Deployment of Sorbster™ . All rights reserved MAR Systems Inc.

Lab Evaluation of Client Waters – “Send Us Your Water” Testing Service 5 to 10 gallon water samples shipped to MAR Packed bed of media in 1” by 36” height columns Hydraulic loading of 2 gpm/ft², up-flow Contact time determination Minimum of 15 bed volumes treated Pretreatment testing SUYW report . All rights reserved MAR Systems Inc.

Field Demonstration Units MAR Field Demonstration Unit Flow rates from 1 – 75 GPM Objectives: Contaminant removal on varying water conditions Optimize contact time Typical Scope: Demonstration test plan (treatment objectives and analytical testing) Installation & startup supervision MAR technical team telephone consultation Scheduled site visits Other scope options available Final Report and Recommendations . All rights reserved MAR Systems Inc.

Where Can Sorbster™ be Used? Applications of Sorbster™ Flow-through vessels in lead-lag - pump and treat Temporary applications Soxx Sorbster fines for remediation cap & treat Wetlands barriers Intermittent flows – but keep Sorbster wet . All rights reserved MAR Systems Inc.

. All rights reserved MAR Systems Inc. Rob Haney West Coast Regional Sales Manager Cell: 760-803-1813 rhaney@marsystemsinc.com Missy Hayes VP Business Development 440-505-0962 x: 100 mhayes@marsystemsinc.com Technology for Clean Water For the removal of : Mercury Arsenic Selenium Copper Fluoride Cadmium Thallium Vanadium Tin Barium Hexavalent Chromium Antimony Cobalt Silica Lead Zinc Boron Molybdenum Nickel Cyanide . All rights reserved MAR Systems Inc.