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• c) the vehicles must be kept closed (such as through the use of a tarpaulin) at all times other <br />than loading and unloading. <br />In order to verify that the radiation dose rate of the empty vehicles will not exceed the limits set <br />forth in paragraph (a) above, and routine surveys to demonstrate compliance with this limit are <br />not warranted, Mill Radiation Staff will verify (and document for the record) that this is the case <br />by surveying a representative number of the initial vehicles as they are released from the Mill for <br />return to the Mine. In performing such surveys, Mill Radiation Staff will follow existing Mill <br />standard operating procedures. <br />It should be noted that, in order for vehicles to be released from the Mill site, Mill staff will also <br />be required to survey the vehicles in accordance with the requirements of Nuclear Regulatory <br />Commission Regulatory Guide 1.86 ("Reg. Guide 1.86"), unless and to the extent exempted by <br />the Utah Division of Radiation Control. Reg. Guide 1.86 does not apply to releases of vehicles <br />from the Mine site. <br />Unless the Transportation Contractor advises Mill staff otherwise, Mill staff will assume that <br />each vehicle released from the Mill site will be returning to use solely for transporting uranium <br />ore from the Mine to the Mill, and will not be released for unrestricted use. <br />The Transportation Contractor will advise Mill staff prior to sending any vehicle in for repairs or <br />servicing, so that Mill staff can ensure that the vehicle to be serviced or repaired has been <br />released for unrestricted use. No vehicle may be sent in for servicing or repair unless it has been <br />• released for unrestricted use by Mill staff. <br />8.3.2. Vehicles That Will Not be Used Solely for Transporting Ore From the Mine to the Mill <br />(Free Release) <br />49 CFR 177.843 provides that each motor vehicle used for transporting uranium ores under <br />exclusive use conditions in accordance with 49 CFR 173.427(c) must be surveyed with radiation <br />detection instruments after each use. A vehicle may not be returned to service (i.e., released <br />from the Mill for unrestricted release) until the radiation dose rate at every accessible surface is <br />0.5 mrem/hr or less and the removable (non-fixed) radioactive surface contamination is not <br />greater than 2,200 dpm/100 cm2, as required under 49 CFR 173.443(a). <br />As a result, if the Transportation Contractor advises Mill personnel that any particular vehicle <br />will not be returning for use solely for purposes of transporting uranium ore from the Mine to the <br />Mill or is to be sent in for servicing or repairs, Mill Radiation Safety staff will survey the vehicle <br />prior to releasing it from the Mill site to ensure that it satisfies these criteria, as well as the <br />applicable provisions of Reg. Guide 1.86. In performing such surveys, Mill Radiation Staff will <br />follow existing Mill standard operating procedures. <br />Once a vehicle is surveyed for unrestricted release in accordance with this Section, Mill staff will <br />remove or paint over the markings on the vehicle, described in Section 4 above. <br />• <br />July 5, 2007 9 Rev 0