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WHC-SD-W100-TI-003 Rev. 0
Procedure 90109-0
7.4.4 Let the solution cool to room temperature and record the pH. If the pH is
less than 5.0, use extraction fluid number one (1). If the pH is greater than
5.0, use extraction fluid number 2. Proceed to Section 8.0.
75 The sample of waste used for performance of the section shall not be used any further.
Other samples of the waste (Reference Step 6.2) should be employed for the Section 8.0.
L& PROCEDURE WHEN VOLATILES ARE NOT INVOLVED
Although a minimum sample size of one hundred (100) grams (solid and liquid phases) is
required, a larger sample size may be more appropriate, depending on the solids content of the
waste sample (pereent solids, Reference Step 7.1) whether the initial liquid phase of the waste
will be miscible with the aqueous exvact of the solid, and whether inorganies, semivolan'le
organira, pesticides, and herbicides are all analytes of concern. Enough solids should be
generated for extraction such that the volume of TCLP extraet will be sufficient to support all
of the analyses required. If the amount of the extract generated$y the-performaiice of a'single
TCLP extraction will not be sufficient to perform all of the analyses to be conducted, it is
recommended that more than one (1) extraction be performed and that the extracts from each
ern-action be combined and then aliquoted for analysis.
8.1 If the waste will obviously yield no liquid when subjected to pressure filtration (Le. is one
hundred percent (100%) solid Reference Step 7.1), weigh out a representative subsample
of the waste (one hundred (100) grams minimum) and proceed to Step 8.9.
8.2 If the sample is liquid or multiphasic, liquid/solid separation is required. This involves the
filtration device described in Step 43.2 and is outlined in Steps 83 to B.S.
83 Preweigh the container that will receive the filtrate.
---- -----8.4-Aater.^.ble4lacfilter itolder and flater followint: the manufaeturer's instruetions. Place the
filter on the support screen and seeure. Acid wash the filter if evaluating the mobility of
metals (Reference Step 4.4).
NOTE Acid washed filters may be used for all nonvolatile extractions even when
metals are not of concern.
85 Weigh out a representative subsample of the waste ( 110 grams minimum) and record the
weight. If the waste was shown to contain less than 0.5% dry solids ( Step 7.3), the waste,
after filtration is defined as the'f'Q,P extract. Therefore, enough of the sample should
be filtered so that the amount of filtered liquid will support all of the analyses required
of the TCLP eztract. For wastes containing greater than 05% dry solids ( Step 7.1 or 7.2),
use the percent solids information obtained in Step 7.1 to determine the optimum sample
size ( one hundred (100) grams minimum) for filtration. Enough solids should be
generated after filtration to support the analyses to be performed on the TCLP extract.
Stock Equipment Company
A Unit ot General Signal
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