SRS™ Droplet Size Comparison

1035 Philadelphia Pike Suite E Wilmington Delaware 19809 302-798-9553 Fax 302-798-9554 www.terrasystems.net Offering In Situ Bioremediation Solutions to Environmental Problems U.S. Patent# 6,398,960 B1 and U.S. Patent Reissue# RE40,448 Emulsified Vegetable Oil Substrate The Importance of Droplet Size Terra Systems, Inc. manufactures its patented “injection ready” SRSTM emulsified vegetable oil substrate (EVO) in two versions – a small droplet size for applications (SRSTM-SD) when optimizing the radius of influence is a prime objective and a large droplet size (SRS TM -FR) for fractured rock applications where adsorption in the formation is a prime concern. Terra Systems is headquartered in Wilmington, DE. and operates its own manufacturing facility in West Chester, PA. TSI has the capability of manufacturing SRS TM -SD or SRS TM -FR emulsified vegetable oil substrate in oil percentages between 45 – 60% or we can custom blend an “injection ready” mix to your specifications. Small Droplet Size SRS TM -SD SRS TM -SD has a mean droplet size of 0.60 microns (verified by Particle Technology Labs in Downers Grove, IL.) Droplet size is critical when optimizing the radius of influence for injection is a prime objective because it increases the transport of oil-in-water emulsions through porous media. Injection of pure vegetable oil or a large droplet size emulsion could significantly reduce the radius of influence of the substrate thereby requiring more injection points and increasing operational costs. 1035 Philadelphia Pike Suite E Wilmington Delaware 19809 302-798-9553 Fax 302-798-9554 www.terrasystems.net Terra Systems SRS TM -SD has the ideal combination of a very small median droplet size and a very tight distribution around the mean. This allows injection of SRS TM -SD into formations with very little change in permeability. SRS TM -FR Large Droplet Size for Fractured Rock SRS TM -FR is a large droplet size version of our standard product designed specifically for fractured rock applications where adsorption in the formation is a prime concern. A modified manufacturing process is used to generate larger droplet sizes. As an EVO product supplier we view environmental consulting companies as our customers, not our competitors and our goal is to make you successful with your clients. Since our focus is on our products and not billable hours, we invest heavily in R&D, which is demonstrated by our involvement in SABRE (http://www.claire.co.uk), SURF, our licensing of EZVI from NASA, and our ability to manufacture a custom EVO for your specific requirements. Since we do not sub-contract SRS™ manufacturing to others, we have the ability to setup “Just- In-Time” manufacturing and delivery of SRSTM and SRSTM-FR. We work closely with the on-site project managers to produce and deliver SRS TM based on real-time site conditions. The benefit of this is that if you run into any problems, you don’t have to worry about on-site storage of large amounts of material, especially in hot weather. Terra Systems is a customer focused company where 100% customer satisfaction is our goal. SRS TM (small droplet size for radius SRS TM -FR (large droplet size for of influence) substrate adherence) The digital microscope software we use demarks the EVO droplets with green and measures the droplet size.