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| Chapter 5 - Environmental Engineering |
| Number |
Topic |
Rule of Thumb |
| 5.01 |
Environmental Impact Statement |
The cost of an environmental impact statement (EIS) (including base line monitoring and specific previously performed studies) may cost approximately 2.5% of the total pre-production capital cost for a plain vanilla domestic mining project. The cost can increase by 2% for an undertaking that is politically or environmentally sensitive. In the latter case, the cost may increase further if proposals are challenged in the courts. Source: R.W. Corkery |
| 5.02 |
Site Layout |
If the mill (concentrator) is located close to the mine head, the environmental impact is reduced and so are the costs. Pumping tailings from the mill is cleaner, less disruptive to the terrain, and less expensive than to truck haul ore over a similar distance. When pumping water to the mill and hauling concentrate from the mill is considered, the argument is usually stronger. The rule is further reinforced in the case of an underground mine where a portion of the tailings is dedicated for paste fill or hydraulic fill. Source: Edgar Köster |
| 5.03 |
Site Layout |
The mine administration offices should be located as near as possible to the mine head to reduce the area of disturbance, improve communications, and reduce transit time. Source: Brian Calver |
| 5.04 |
Site Layout |
When a mine has a camp incorporated into its infrastructure, the campsite should be as close as practical to the mine to minimize the impact from service and utility lines, decrease the area of the footprint of disturbance, shorten travel time, and reduce costs. Source: George Greer |
| 5.05 |
Site Drainage and Spill Protection |
Drainage ditches to protect the mine plant should be designed to develop peak flow rates based on 100 year, 24 hour storm charts. Source: AASHO |
| 5.06 |
Site Drainage and Spill Protection |
Dykes around tank farms should be designed to hold 100% of the capacity of the largest tank + 10% of the capacity of the remaining tanks. Source: George Greer |
| 5.07 |
Water Supply |
If a drilled well is to be used for fire fighting without additional storage, it should demonstrate (by pumping test) a minimum capacity of 40 USGPM continuously for two hours during the driest period of the year. Various Sources |
| 5.08 |
Water Supply |
Chlorine should be added to water at a rate of approximately 2 mg/litre to render it safe to drink. Source: Ontario Ministry of Health and Welfare |
| 5.09 |
Dust Suppression |
Dust emissions emanating from the transport of ore will not remain airborne when the size of dust particle exceeds 10 m (ten microns). Source: Howard Goodfellow |
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