REVISION - 10/30/2009, 7:49:10 AM-JWD

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PowERT(Ch (USA) 114c.. Produced Water Vessel - Cleaning and inspection Procedure Powertech has strict guidelines that must be adhered to when bringing water containment vessels onto project properties, specifically when those vessels are being used to contain groundwater produced from uranium ore-bearing aquifers and re-injected into the aquifer from which the groundwater originated. The purpose of these guidelines is to ensure that no residual chemicals or micro-organisms are present within a vessel due to the previous user of the vessel, and thus eliminate the possibility of cross-contamination of chemical or biological substances. The contractor that Powertech selects to supply water containment vessels must be fully aware of our strict adherence to this policy. The contractor selected for cleaning and testing of vessels must certify that all water containment vessels will be cleaned to a specific standard before the vessels are mobilized onsite. The standard operating procedure that will be utilized is summarized in this document. Before vessels are brought onsite, the following procedures must be conducted: • Remove solids and/or liquids from exterior surface of vessel; • Thoroughly inspect the vessel(s) for any exterior structural or mechanical damage; • Perform atmospheric testing prior to cleaning crew entering the vessel; • Remove and properly dispose of any solids and liquids within the interior and valves of the vessel, including any oil and grease; • • Perform bleach wash on interior and valves; • Perform high pressure rinse on the interior and valves of the vessel with water that is at or above a temperature of 2801 degrees Fahrenheit; • The interior of the vessel shall be drained and dried of any residual water following the cleaning procedure; • Provide Powertech a signed certification (Certificate of Cleaning) that vessel(s) has been cleaned pursuant to this (and any other relevant) procedure. Prior to bringing the water containment vessel(s) onsite, Powertech personnel shall perform the additional steps to ensure the vessel(s) is clean and in proper condition: • Cross reference the Certificate of Cleaning vessel number with that of each delivered vessel before it enters the site; • Visually inspect the interior, exterior, and valves of the vessel to ensure cleanliness. Do not enter the vessel. Check for the following items, and if any exist, the vessel must be rejected: o Oil, grease or other removable foreign substance on exterior of the vessel, o Sediment and other solids in bottom of vessel, o Presence of foreign substance(s) on interior of vessel, o Water and other liquids within the vessel, and o Damage to the tank and/or valves and/or other mechanical problems. 11 Pa e Completeness Issue Item #1 Attachment