1. Oxygen Release Compound (ORC   Timely, Cost-Effective Solutions for Accelerating Natural Attenuation

2. What is ORC? A proprietary time-release formulation of magnesium peroxide (MgO 2 ) A proprietary time-release formulation of magnesium peroxide (MgO 2 ) Used for accelerated bioremediation of aerobically degradable contaminants Used for accelerated bioremediation of aerobically degradable contaminants Chemistry Chemistry MgO 2 + H 2 O 1/2 O 2 + Mg(OH) 2

3. ORC’s Patented Time-Release Feature Typical MgO 2 releases oxygen for only 3-4 weeks due to “Lockup” Typical CaO 2 releases for 3-4 weeks (Lockup) and presents pH problem Patented structure of ORC crystal allows for continued release of oxygen by avoiding Lockup and moderate pH

4. ORC’s Patented Time-Release Feature Extended oxygen release profile Magnesium peroxide crystalline structure intercalated with food-grade phosphateMagnesium peroxide crystalline structure intercalated with food-grade phosphate Releases oxygen for up to 6 to 12 monthsReleases oxygen for up to 6 to 12 months Environmentally Safe Insoluble Mg compounds maintain moderate pH levels (K sp = 1.8 x 10 -11 )Insoluble Mg compounds maintain moderate pH levels (K sp = 1.8 x 10 -11 ) Safe reaction by-product : solid Mg(OH) 2 or “Milk of Magnesia”Safe reaction by-product : solid Mg(OH) 2 or “Milk of Magnesia”

6. Benefits of ORC’s Time-Release Feature Rapid Site Closure - Accelerates natural attenuation by 10X to 1000X— reducing time to site closure Cost-Effective - No capital costs for systems - No operation & maintenance costs - Reduced installation costs

7. ORC vs Other Technologies SiteAS/SVEORCSavings%Savings Okalahoma$158,000$46,000$112,00070% California$180,000$80,000$100,00055% Alabama$99,000$26,000$73,00074% SiteMonitor OnlyORCSavings%Savings Okalahoma$54,000$46,000$8,00015% Alabama$54,000$26,000$28,00052% *All values were derived independently by the sites’ consultant. The costs are full system costs with the objective of site closure ORC vs Monitoring Only

8. Benefits of ORC’s Time-Release Feature Non-invasive In-situ technology minimizes physical disturbance to propertyIn-situ technology minimizes physical disturbance to property Wide regulatory acceptance Installed in all 50 states of USInstalled in all 50 states of US Proven technology Installed on >6,500 sites worldwideInstalled on >6,500 sites worldwide

9. Aerobically Degradable Compounds Petroleum HydrocarbonsPetroleum Hydrocarbons –BTEX –Alkanes (diesel, fuel oil, etc.) AlcoholsAlcohols KetonesKetones MTBEMTBE Vinyl ChlorideVinyl Chloride Etc.Etc.

10. Oxygen Release Compound ( Applications) Saturated Zone Source TreatmentSaturated Zone Source Treatment –ORC slurry injected into source area Excavated Tank TreatmentExcavated Tank Treatment –ORC applied as backfill amendment after UST excavations Oxygen Barrier-PRBOxygen Barrier-PRB –ORC socks or slurry applied downgradient to cut-off leading edge of plume or upgrad- ien to sweep oxygen across plume

11. Source Treatment with Slurry Injection Application ORC powder is mixed with water to form a slurry Direct-push injection of slurry ORC slurry is poured into the hopper of a into the hopper of a Slurry Injection Pump

12. Is ORC right for your project? Follow these steps to find out! Step #1 – Contact Regenesis Technical Support for a free site evaluation, cost estimate and proposal.Step #1 – Contact Regenesis Technical Support for a free site evaluation, cost estimate and proposal. Step #2 – Evaluate free ORC Proposal, determine if it meets your requirements and goalsStep #2 – Evaluate free ORC Proposal, determine if it meets your requirements and goals Step #3 – If so, you can order ORC directly from Regenesis over the phone at (949) 366-8000Step #3 – If so, you can order ORC directly from Regenesis over the phone at (949) 366-8000

13. Steps to obtaining HRC - contn’d Step #4 - ORC is typically shipped by truck, and is delivered in 30 lb. buckets or Filter Socks as specified *Note: MSDS and installation instructions are supplied. Step #5 - Receive product and apply to your site.

14. REGENESIS SUPPORT Regenesis offers support free of charge: ORC engineering/design servicesORC engineering/design services ORC application/installation tech supportORC application/installation tech support www.regenesis.com Technical Bulletins withTechnical Bulletins with Case StudiesCase Studies Peer-reviewed LiteraturePeer-reviewed Literature Download the Applications and Real Estate SoftwareDownload the Applications and Real Estate Software

15. For More Information please contact us at: (949)366-8000 California, USA or go to www.regenesis.com