Appendix 2 - Analytical results for blanks collected from October 2013 through September 2015 during surface-water sampling at the Triangle Area Supply Monitoring Project study sites, North Carolina

The dataset contains the analytical results for quality-control samples collected during the surface-water sampling for the Triangle Area Water Supply Monitoring Project. The data are sampling-vehicle (ambient) blanks and field blanks collected during October 2013 through September 2015. Several study sites contained in this dataset were sampled for other USGS projects during the same time frame. Unless the quality-control samples at these sites were collected in conjunction with the Triangle Area Water Supply Monitoring Project, the data for other projects are not included in the dataset.

本数据集收录三角区域供水监测项目（Triangle Area Water Supply Monitoring Project）地表水采样环节采集的质量控制样本分析结果。本次纳入数据集的样本为2013年10月至2015年9月期间采集的采样车（环境）空白样与现场空白样。本数据集涵盖的部分研究站点，在同期还参与了其他美国地质调查局（United States Geological Survey，简称USGS）项目的采样工作。仅当这些站点的质量控制样本与三角区域供水监测项目同步采集时，相关数据才会纳入本数据集；其余项目的对应数据均未被收录。