ETL 1110-1-158
28 Feb 95
*****************************************************************
This section should outline what initial physical testing will be
performed. A sufficient number of classification tests should be
performed on the homogenized samples to verify that properties
such as moisture content, gradation, and Atterberg limits are
representative of site conditions. The samples should also be
visually characterized for parameters such as texture and
cohesiveness.
*****************************************************************
2.4
Task 4
Treatability Study Testing.
2.4.1
*****************************************************************
The Contractor should be tasked to identify what reagents will be
tested during the treatability study. The selection process
should utilize the Contractor's past experience as well as
literature searches. Reagents should be selected for the
treatability study based on effectiveness, cost, and proximity to
the project. The Contractor's work plan should document how each
of the selected reagents will react with the contaminants present
to reduce their mobility.
In some instances, the designer may have enough experience to
allow the Government to specify reagents that will be used during
the treatability study. If this is the case, these reagents
should be identified in the SOW.
*****************************************************************
2.4.2
Testing Program.
*****************************************************************
A typical treatability study testing program will be an iterative
process which determines the optimal formulation that achieves
the project objectives. The testing program should emulate
expected conditions and processes to be used during remedial
action to the greatest extent possible. The Contractor should be
tasked to propose a testing program which consists of mixing
small volumes of contaminated material with several reagents at
varying waste/reagent/water mix ratios. The mixtures should be
allowed to cure and then be evaluated according to established
physical and chemical criteria. Formulations that produce
favorable results will undergo additional testing. The
Contractor's testing program should consist of a minimum of two
rounds of testing to improve and refine the formulation. The
final recommended mix design will be the one that most
B-5
Previous Page
