ASTM D5921-96(2010)
Standard Practice for Subsurface Site Characterization of Test Pits for On-Site Septic Systems

Standard No.

ASTM D5921-96(2010)

Release Date

1996

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D5921-96(2010)

Scope

This practice should be used as part of the evaluation of a site for its potential to support an on-site septic system in conjunction with Practice D5879 and Practice D5925.

This practice should be used after applicable steps in Practice D5879 have been performed to document and identify potentially suitable field areas.

This practice should be used by those who are involved with the evaluation of properties for the use of on-site septic systems. They may be required to be licensed, certified, meet minimum educational requirements by the area governing agencies, or all of these.

This practice requires exposing the soil to an appropriate depth (typically 1.5 to 1.8 m, or greater as site conditions or project objectives require) for examining the soil morphologic characteristics related to the performance of on-site septic systems.

1.1 This practice covers procedures for the characterization of subsurface soil conditions at a site as part of the process for evaluating suitability for an on-site septic system. This practice provides a method for determining the usable unsaturated soil depth for septic tank effluent to infiltrate for treatment and disposal.

1.2 This practice describes a procedure for classifying soil by field observable characteristics within the United States Department of Agriculture, Soil Conservation Service (SCS) classification system. The SCS classification system is defined in Refs (1–4), not in this practice. This practice is based on visual examination and manual tests that can be performed in the field. This practice is intended to provide information about soil characteristics in terms that are in common use by soil scientists, public health sanitarians, geologists, and engineers currently involved in the evaluation of soil conditions for septic systems.

ASTM D5921-96(2010) Referenced Document

• ASTM D2325 Standard Test Method for Capillary-Moisture Relationships for Coarse- and Medium-Textured Soils by Porous-Plate Apparatus*， 2000-01-01 Update
• ASTM D2434 Standard Test Method for Permeability of Granular Soils (Constant Head)
• ASTM D2488 Recommended Practice for Description Of Soils (Visual-Manual Procedure)
• ASTM D3152 Standard Test Method for Capillary-Moisture Relationships for Fine-Textured Soils by Pressure-Membrane Apparatus*， 2000-01-01 Update
• ASTM D3385 Standard Test Method for Infiltration Rate of Soils in Field Using Double-Ring Infiltrometer
• ASTM D422 Standard Test Method for Particle-Size Analysis of Soils
• ASTM D5093 Standard Test Method for Field Measurement of Infiltration Rate Using a Double-Ring Infiltrometer with a Sealed-Inner Ring
• ASTM D5879 Standard Practice for Surface Site Characterization for On-Site Septic Systems
• ASTM D5925 Standard Practice for Preliminary Sizing and Delineation of Soil Absorption Field Areas for On-Site Septic Systems
• ASTM D653 Standard Terminology Relating to Soil, Rock, and Contained Fluids*， 1997-04-19 Update

ASTM D5921-96(2010) history

• 1996 ASTM D5921-96(2010) Standard Practice for Subsurface Site Characterization of Test Pits for On-Site Septic Systems
• 1996 ASTM D5921-96(2003)e1 Standard Practice for Subsurface Site Characterization of Test Pits for On-Site Septic Systems
• 1996 ASTM D5921-96e1 Standard Practice for Subsurface Site Characterization of Test Pits for On-Site Septic Systems