With the dredging projects in the Lower Yellow River, the environmental background values of the dredging silt have been determined by means of on site sampling and measurement.

结合黄河下游疏浚工程，通过现场取样和化验，确定了疏浚底泥的环境背景值。

youdao

The site of Tongguan Kiln covers an area of 0.68 square kilometers, with 46 sites of Gulong Kiln and 19 dredging holes.

铜官窑遗址保存面积为0．68平方公里，保护区内古龙窑遗址46处、挖泥洞19处。

youdao

Heavy rain delays dredging of crash site.

CNN: Events and developments related to the crash of ValuJet Flight 592

Environmentalists have long been pressing for additional dredging of contaminated sections outside the Superfund site north of Albany.

WSJ: GE to study Hudson River cleanup expansion