Environmental

McCLELLAND LABORATORIES, INC

1016 Greg Street. Sparks, Nevada 89431
(775) 356-1300
Fax (775) 356-8917
E-MAIL mli@mettest.com

ENVIRONMENTAL

Environmental

McClelland Laboratories, Inc. USA provides detailed environmental characterization evaluations for potential of mine solids to mobilize constituents on contact with meteoric water and potential to produce or neutralize acid in natural weathering and oxidizing conditions to assist you in identifying potential environmental impacts which may require prevention during processing or mitigation on closure.

Constituent Mobility Potential Tests

	NDEP - Meteoric Water Mobility Procedure
	US EPA Method 1312 (SPLP)

Potential for Acid Rock Drainage Tests

	Static - Modified Acid/Base Accounting (Mod ABA)
	Kinetic - Humidity Cell Test Procedure (20 weeks plus)

Soils Attenuation Tests for Land Application of Wastewater

	Sequential Batch Test - synthetic solution, if process water is not available
	Column Percolation Test - if process water is available

Heap Neutralization Rinse Down Tests

	On Column Leach Test Residues - if during project development phase
	On Actual Commercial Heap Residues, at Heap Height - if mine closure data is required
	Recirculation Rinse (carbon adsorption - barren recycle) and Chemical Oxidation of Rinse Effluents (H₂O₂, SO₂/Air, O₃, and OCl^-) Procedures Available

Pit Water Quality Studies

	Potential for Constituent Mobility and Acid Rock Drainage on Final Pit Wall Core Samples
	Determination of Ultimate Pit Water Quality - computer modeling is normally required

Infiltration Pond Soils (Solids) Attenuation/Mobilization Tests

	Determine Suitability of Potential Infiltration Pond Site for Pit Dewatering During Mining
	Determine Attenuation of Constituents in Pit Water by Infiltration Pond Site Soils
	Determine Potential for Constituent Mobility from Infiltration Pond Soils after Contact with Pit Water
	Determine Water Quality of Effluent from Infiltration Pond Soils

Tailings Impoundment Characterization Studies

Normally Tailored Protocol to Simulate Site Specific Conditions

Bio-Mass Substrate Evaluations for Passive Wastewater Treatment

Normally Tailored Protocol to Simulate Site Specific Needs

Technical support and oversight for all environmental testing programs is provided by McClelland Laboratories, Inc. USA.

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