1. Scope

1.1 This test method covers a procedure for the shake leaching of mining waste containing at least 80 % dry solids ( 20 % moisture) in order to generate a solution to be used to determine the inorganic constituents leached under the specified testing conditions, that conform to the synthetic precipitation leaching procedure (SPLP).

1.2 This test method calls for the shaking of a known weight of mining waste with acidic extraction fluid of a specified composition as well as the separation of the liquid phase for analysis. The pH of the extraction fluid is to reflect the pH of acidic precipitation in the geographic region in which the waste being tested is to be disposed.

Possible sources of information concerning the pH of the precipitation in the geographic region of interest include state and federal environmental agencies, state universities, libraries, etc. pH values given in USEPA Method 1312, that are 4.2 east of the Mississippi River and 5.0 west of the Mississippi River and are based on acid precipitation maps, are examples of values that can be used. If the pH of the laboratory water is less than the desired pH for the site, do not use this test method, use Test Method D 3987.

1.3 This test method is intended to describe the procedure for performing single batch extractions only. It does not describe all types of sampling and analytical requirements that may be associated with its application.

1.4 The values stated in SI units are to be regarded as the standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D75 Practice for Sampling Aggregates

D420 Guide to Site Characterization for Engineering Design and Construction Purposes

D653 Terminology Relating to Soil, Rock, and Contained Fluids

D1129 Terminology Relating to Water

D1193 Specification for Reagent Water

D2234/D2234M Practice for Collection of a Gross Sample of Coal

D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water

D3370 Practices for Sampling Water from Closed Conduits

D3987 Test Method for Shake Extraction of Solid Waste with Water

D5744 Test Method for Laboratory Weathering of Solid Materials Using a Humidity Cell

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

E877 Practice for Sampling and Sample Preparation of Iron Ores and Related Materials for Determination of Chemical Composition

Keywords

extracts; extraction fluids; leaching procedure; mining waste; shake extraction; SPLP; synthetic precipitation; waste leaching technique;

ICS Code

ICS Number Code 73.020 (Mining and quarrying)

DOI: 10.1520/D6234-98R07

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