ASTM D4427-07 - 1.5.2007
 
Significance and Use

The purpose of this classification is to standardize the naming of peat materials so that the peat-producer can better identify the product and the peat-consumer better select peat materials to meet requirements. This system may also be used for peat resource evaluations, environmental impact reports, and preliminary engineering studies. The parameters selected for use in this classification are ones which have been determined to relate to the agricultural/horticultural, geotechnical, and energy uses of peats.

Note 1—The quality of the results produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing/sampling/inspection/and the like. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself assure reliable testing. Reliable testing depends on many factors; Practice D 3740 provides a means of evaluating some of those factors.

 
1. Scope

1.1 This classification is a system for subdividing and assigning nomenclature to peat samples through laboratory tests.

This standard does not purport to address all of the safety problems, 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

D3740-26

Standard Practice for Minimum Requirements for Agencies Engaged in Testing of Soil and Rock as Used in Engineering Design and Construction

D2980-17

Standard Test Method for Saturated Density, Moisture-Holding Capacity, and Porosity of Saturated Peat Materials

D2976-22a

Standard Test Method for pH of Peat Materials (Includes all amendments and changes 11/1/2022).

D1997-25

Standard Test Method for Laboratory Determination of the Fiber Content of Peat and Organic Soils by Dry Mass

D653-26a

Standard Terminology Relating to Soil, Rock, and Contained Fluids (Includes all amendments and changes 6/15/2026).

D2974-25e1

Standard Test Methods for Determining the Water (Moisture) Content, Ash Content, and Organic Material of Peat and Other Organic Soils (Includes all amendments and changes 12/9/2025).