The Risk Management Tool Box Blog

Preventing Pollution During De-watering

Graham Marshall - Wednesday, January 25, 2012

It is often necessary for some organizations, such as power and utility companies, and their contractors to de-water underground ducts and chambers prior to access for maintenance or other works.

The de-watering requirements in such cases tend to be of low volume but they occur widely.

Unfortunately, water that has accumulated within a duct or chamber may often be contaminated with substances such as oil, silt and dissolved chemicals.

 All of those hazardous substances can adversely affect water quality if they are not disposed of appropriately.

In order to protect rivers and groundwater, it is therefore essential to exercise good risk-management when de-watering any location.

The UK Environment Agency has produced an excellent Pollution Prevention Guide (PPG-20) in order to assist those engaged in the de-watering of underground ducts and inspection chambers.

To access a free copy of the PPG, simply click here.

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