Jump to main content

Contact Us

EPA On-line Tools for Site Assessment Calculation

Module Home Objectives Table of Contents Previous < Next >

33 of 45

Retardation Factor

In the report the retardation factor for benzene was set to 10. We will work through the following list of questions to evaluate this number.

We'll use the OnSite retardation factor calculator and the parameter values from the site report to answer these questions.

The calculation of the retardation factor uses the:

The values used in the report were

Porosity and Bulk Density

The porosity and bulk density are related quantities. The bulk density refers to a density of the packed grains (including the grains and the void space).

Calculator icon Since there is not a separate calculator for bulk density, use the retardatation factor calculator to determine the bulk density for a porosity of 0.35.

Previous Top ^ Next

Home | Glossary | Notation | Links | References | Calculators


Contact Jim Weaver to ask a technical question on this material.

Jump to main content.