Project sampling 12 points, including US-S01~US-S08, US-S10 and FS-S01~FS-S03. Becuase of bed rock, point US-S01, US-S02 and US-S10 did not achieved goals. However, bedrock had not have polluted trace. The teams judged that the sample was representative.

Wu Sha Abandoned gas station, Verification, sampling