This paper describes how environmental measurement data were used to help quantify the spatial impact and behavior of uranium released to the environment from a uranium manufacturing facility in Apollo, PA. The Apollo facility released enriched uranium to the environment while it operated between 1957 and 1983. Historical monitoring data generated by the site, along with other independent data sources, provided a long-term record documenting the presence and behavior of uranium in the local environment. This record of evidence, together with reconstructed estimates of facility releases, has been used to estimate environmental concentrations during facility operations and potential exposures to members of the public. Historical environmental measurement data were also used to confirm predictions of deposition and concentrations in air. The data are used here to derive atmospheric deposition velocities for the uranium emissions. Based on the spatial pattern of measurements and calculated deposition velocities around the facility, the released material contained larger particles that deposited close to the facility, and the released material remains largely in the surface layers of the soil, indicating limited downward mobility. Evidence of measurable impacts was determined to extend a relatively short distance (<500 m) from the facility. The soil data collected around Apollo are also compared to findings related to uranium mobility at another facility where uranium was released to the environment, and similar behavior was observed at both sites.

中文翻译：

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分析环境数据以支持对宾夕法尼亚州阿波罗前铀加工设施的历史排放量进行量化。

本文介绍了如何使用环境测量数据来帮助量化从宾夕法尼亚州阿波罗的铀制造工厂释放到环境中的铀的空间影响和行为。阿波罗设施在 1957 年至 1983 年间运行期间向环境释放了浓缩铀。该站点生成的历史监测数据以及其他独立数据源提供了长期记录，记录了铀在当地环境中的存在和行为。该证据记录以及设施排放的重建估计已用于估计设施运营期间的环境浓度和对公众的潜在暴露。历史环境测量数据也用于确认对空气中沉积物和浓度的预测。这些数据在这里用于推导出铀排放的大气沉降速度。根据测量的空间模式和计算出的设施周围的沉积速度，释放的物质含有较大的颗粒，沉积在设施附近，释放的物质大部分留在土壤表层，表明向下流动性有限。确定可测量影响的证据是从设施延伸相对较短的距离（<500 m）。阿波罗周围收集的土壤数据也与另一个铀被释放到环境中的设施的铀流动性相关的发现进行了比较，并且在两个地点都观察到了类似的行为。根据测量的空间模式和计算出的设施周围的沉积速度，释放的物质含有较大的颗粒，沉积在设施附近，释放的物质大部分留在土壤表层，表明向下流动性有限。确定可测量影响的证据是从设施延伸相对较短的距离（<500 m）。阿波罗周围收集的土壤数据也与另一个铀被释放到环境中的设施的铀流动性相关的发现进行了比较，并且在两个地点都观察到了类似的行为。根据测量的空间模式和计算出的设施周围的沉积速度，释放的物质含有较大的颗粒，沉积在设施附近，释放的物质大部分留在土壤表层，表明向下流动性有限。确定可测量影响的证据是从设施延伸相对较短的距离（<500 m）。阿波罗周围收集的土壤数据也与另一个铀被释放到环境中的设施的铀流动性相关的发现进行了比较，并且在两个地点都观察到了类似的行为。表明向下流动性有限。确定可测量影响的证据是从设施延伸相对较短的距离（<500 m）。阿波罗周围收集的土壤数据也与另一个铀被释放到环境中的设施的铀流动性相关的发现进行了比较，并且在两个地点都观察到了类似的行为。表明向下流动性有限。确定可测量影响的证据是从设施延伸相对较短的距离（<500 m）。阿波罗周围收集的土壤数据也与另一个铀被释放到环境中的设施的铀流动性相关的发现进行了比较，并且在两个地点都观察到了类似的行为。