Or. Admin. Code § 345-050-0100 - Release of Radioactivity
(1) A
person shall not locate a waste disposal facility at a site unless the facility
is designed to contain radioactive releases. To issue a site certificate, the
Council must find that the applicant has proposed to construct the site using
methods that include, but are not limited to, construction of dikes, liners and
covers, such that there can be no release of radioactive materials from the
facility.
(2) To find that the
proposed radioactive waste disposal facility is designed to contain radioactive
releases, the Council shall consider measurements of natural background
concentrations of radioactive materials near the facility. For the purpose of
this rule, radioactive releases are contained if radiation levels and
concentrations of radioactive materials are less than the upper statistical
limit of background measurements measured before any waste is placed at the
site. In making this finding, the Council shall consider statistical limits
determined at the 99 percent confidence level.
(3) The applicant shall take samples to
determine background from a minimum of four samples evenly spaced over a period
of a year from each monitoring location of air, soil, groundwater and surface
water. The applicant shall calculate the average of the measurements from each
seasonal period and for each sample type to determine the background
concentration. From year to year, the applicant may average the values to
increase the statistical base of measurements, but only within the same
seasonal period. The applicant shall use a sufficient number of monitoring
locations to accurately characterize the area.
(4) After construction of the facility, the
certificate holder shall determine compliance with release limits by
statistically comparing the average of sample measurements to the upper limit
of the range of background values. The certificate holder shall make this
determination by comparing measurements from individual locations to the
established background levels. The certificate holder may average multiple
samples from the same location to determine compliance with release limits, but
only within the same seasonal period.
Notes
Stat. Auth.: ORS 469.470
Stats. Implemented: ORS 469.375
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