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DRMS Item #2) The Rain for Rent rental/sales estimate included with Powertech-s October 28, 2009 <br />submittal states that Powertech will test the tanks for radon following re-injection of the stored <br />water, and will decontaminate the tanks prior to standard cleaning procedures if radon levels are <br />high. DRMS may incur the costs for this procedure in the event of bond forfeiture, and needs the <br />following information in order to estimate the pertinent costs. <br />a) Will the radon test and possible subsequent decontamination be done on site, or after the <br />tanks are returned to the Rain for Rent facility? <br />b) How will the radon test be conducted, and what will it cost? What radon levels will trigger the <br />requirement for decontamination? <br />c) How will the tanks be decontaminated if radon levels are determined to be unacceptably high, <br />and what will decontamination cost? How will decontamination fluids and equipment be <br />disposed of, and what will be their disposal cost? <br />Powertech Response to DRMS Item #2: <br />No radon testing will be conducted. As can be seen from the attached updated Rain for Rent bid <br />estimate for tank rental (Attachment A), radon testing is not a requirement. Any radon naturally <br />occurring within the produced water will be vented to the atmosphere. <br />DRMS Item #3) If Powertech wants the latitude to conduct the proposed pump test during the months <br />when hard freezing temperatures at the test location are possible, then a cold weather plan, including <br />costs, must be provided for DRMS review and approval. The plan must address what measures and <br />what equipment will be employed to keep the water from freezing both to prevent damage to tanks, <br />pipes, and fittings, and to allow for timely re-injection of pump test water. If tank heaters or other <br />power consumptive measures or equipment are to be employed for freeze prevention, provide a <br />specification for generator(s) that will be required, both to conduct the pump test and to operate <br />freeze prevention equipment; this is needed for DRMS to estimate power generation costs to establish <br />the amount of required bond. <br />Powertech Response to DRMS Item #3: <br />Powertech will conduct the Centennial aquifer pump test no earlier than March 15th of 2010. During the <br />month of March, it is unlikely that hard freezing temperatures will take place over an extended duration <br />of time sufficient to freeze water in tanks or piping. Climate data obtained from Nunn, Colorado show <br />that during the month of March, average daily low and high temperatures range from 28 to 55 degrees <br />F. <br />Powertech personnel will conduct daily monitoring of the water containment vessels, valves, and piping <br />to ensure that stored water does not freeze. In the case that daily low temperatures are expected to be <br />well below normal at any time during tank water storage, Powertech will have access to freeze <br />prevention equipment that can be immediately delivered and installed by Rain for Rent. Included as <br />Attachment B is a bid estimate from Rain for Rent for stored water freeze prevention equipment.