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KS Updated 05/27/03 <br /> (TSG) has determined that there are specific conditions that justify the use of HRC-XTM <br /> for a specific project. The conditions are: <br /> o The total concentration of tetrachloroethene (PCE) and trichloroethene <br /> (TCE) exceeds 100 mg/L <br /> o The groundwater velocity at the site is greater than one-foot per day <br /> a The application location is currently not accessible or will not be in the <br /> fiiture and re-application(s) of the product are not feasible <br /> Material Overview, Handling, and Safety <br /> At this time, HRC-A:TM is sold and distributed in plastic buckets only. Each bucket has a <br /> volume of 4.25-gallons and has a gross weight of approximately 32-pounds (net weight <br /> of HRC-XTM = 30-pounds). At an ambient temperature of approximately 70 °F (21 °C) <br /> the viscosity of HRC-XTM is approximately 200,000 centipoise which is similar in <br /> consistency to very cold honey. However the viscosity of HRC-XTM is temperature <br /> sensitive and Regenesis's TSG has observed significant changes in the viscosity of the <br /> material after it is heated to temperatures greater than 110 °F (43°C). <br /> HRC-XTM should be stored in a place that is dry and warm and should not be left directly <br /> in the sunlight. After HRC-XTM has been stored for an extended period of time it is not <br /> uncommon for a thin layer of material to form at the bottom of the bucket. Therefore, the <br /> material should lie mixed into a uniform fluid before installation. <br /> During installation activities Regenesis recommends that field personnel use at least level <br /> D personal protection equipment (PPE). It is highly recommended that eye protection <br /> and gloves be used throughout the installation process because of the product's low pH <br /> and high viscosity. In addition, even though the product is made using only food grade <br /> raw materials, Regenesis does not recommend its consumption. A Materials Safety Data <br /> Sheet (MSDS) is sent with each shipment and should be reviewed before proceeding with <br /> installation activities. <br /> Specific Installation Procedures <br /> 1. Prior to the installation of HRC-XTM, all surface and overhead impediments <br /> should be identified as well as the location(s) of any underground structures. <br /> Underground structures include but are not limited to: utility lines (gas, electrical, <br /> sewer, etc), drain piping, and landscape irrigation systems. <br /> 2. The planned injection locations should be adjusted in the field to account for <br /> impediments and obstacles. <br /> J:ATechnical ServicesUnstallation InstructionsUHRC\HRC-X <br />