Contract Laboratory Results from Field Samples near Hinkley, California

Samples were submitted for contract laboratory analysis as part of a study examining the occurrence of chromium and natural and anthropogenic hexavalent Chromium,...作为一项旨在考察铬（chromium）、天然及人为源（anthropogenic）六价铬（hexavalent chromium）存在情况的研究的组成部分，相关样本已提交至委托实验室开展分析……