drainage waters

It may also carry away soluble materials in the surface drainage waters.

It calculates the chemistry of soils and their drainage waters.

• transport of pesticides from soil to stream by leaching into drainage waters.

Sludge neutralization also decreases phosphorus and metals concentrations in drainage waters.

The drainage waters taken for the sample were highly oxidized and much of the iron present precipitated prior to discharge.

Attention is particularly drawn to the provisions of Condition No. 2 regarding disposal of drainage waters.

Drainage waters shall be conveyed to a lawful point of discharge to the satisfaction of the Council.

Many of the two thousand inactive mines in Ontario release acidic metal bearing drainage waters.

Of course, the other minerals present in the tailings or waste rock are also affected by the acidity of the drainage waters.

The drains have been used over the years to look at losses of nutrients, e.g. nitrate and phosphate in drainage waters.

In some situations, a return of agricultural lands to wetlands may be necessary to restore habitat and reduce the environmental impacts of drainage waters.

In order to reap the maximum benefit from a given water supply and to help dispose of drainage waters, strategies for water re-use have evolved.

Grieve, IC Effects of parent material on the chemical composition of soil drainage waters.

Herbicide concentrations in runoff and drainage waters were monitored during the two first important rainfall events that occurred after herbicide application (Table 3).

In addition, the till contains a small amount (0-2%) of calcium carbonate which strongly influences the acidity/alkalinity of drainage waters.

The drainage waters are more acidic than vinegar, with pH values around 2, and carry large loads of metals, including copper, zinc, and iron.

The firm in charge of the study discovered that the contaminating material originated upstream, from the drainage waters of a Revenue Canada College.

Description: Physical, chemical, biological, hydrological and agronomic properties of acid sulphate soils and their drainage waters will be measured at selected field sites.

Drainage Outlets - Any system of drainage, temporary or permanent, requires an adequate outlet where the drainage waters can be discharged safely.

Drainage channels associated with these agricultural activities are connected to Mooball Creek and rely on the creek to effectively convey drainage waters.

To learn more about these, NWRI’s current investigations are focussing on characterization of mine drainage waters containing extreme concentrations of dissolved constituents.

The variation in metal concentrations and pH of the drainage waters reflects the spatial variation in sulphide oxidation and carbonate buffering.

Also, salt ratio is high at the areas close to the sea connection, and low at the northern sections of the lake where the drainage waters and leakage is effective.

The Waithou Lake in the northern part of the district is formed by the drainage waters collected between Waithou hill on the west and the villages and paddy fields on the east.

Application methods and the timing of the application of soil amendments such as mineral fertilizer, animal manure, and pesticides directly affect concentrations of nitrate, ammonium, phosphorus, and bacteria in drainage waters.