View Document Here - Hanford Site

^^T^•=
WHC-SD-W100-TI-003 Rev. 0
Procedure 90109-0
93 For each analytieal batch (up to twenty (20) samples), it is recommended that a matrix
----spike=oe--performed. Addition of matrix spikes should occur once the TCLP extract has
been generated (i.e., should not occur prior to performance of the TCLP procedure). The
purpose of the matrix spike is to monitor the adequacy of the analytical methods used on
the TCLP extraet and for determining if matrix interferences exist in analyte detection.
9A All quality control measures described in the appropriate analytical methods shall be
followed.
- - ---9§-"Ahe-method-of standard addition shall be employed for each anaiyte if.
1. recovery of the compound from the TCLP extract is not between 50% and
150%; or
2. if the concentration of the constituent measured in the extract is within 20%
of the appropriate regulatory threshold. If more than one (1) extraction is
being-r-unon samples of the same waste (up to twenty (20) samples), the
method of standard addition need be applied only once and the percent
recoveries applied to the remainder of the extractions.
9.6 Samples must undergo TQ.P extraction within the following time period after sample
receipt.
Stock EDuiomentCompany
A Unit of General Signal
Fpm 64053DA/86
Volatiles - Fourteen (14) Days
Semivolatiles - Forty (40) Days
Mercury - Twenty-Eight (28) Days
Other Metals - One Hundred and Eighty (180) Days
Extraction of the solid portion of the waste should be initiated as soon as possible
following initial solidAiquid separation. TCLP exeracts shall be analyzed after generation
and preservation within the following periods.
Volatiles - Fourteen (14) Days
Semivolatiles - Forty (40) Days
Mercury - Twenty-Eight (28) Days
Other Metals - One Hundred and Eighty (180) Days
C-b4
Page ]4 of 22