Standard Interpretation
Standard: 2016
Section: V1M4, Section 1.6.3
REQUEST:
Section 1.6.2 clearly indicates that an initial DOC is required for all analytes measured under a method. The language in section 1.6.3 for continuing DOC is not as specific. Must all analytes reported under a method/technology be included in the continuing DOC, or can a representative group of analytes be chosen and indicated within laboratory SOPs?
TNI FINAL RESPONSE:
Section 1.6.2 (IDOC) is specific to each matrix-method-analyte combination.
Section 1.6.3 (ODOC) does not state that it is specific to each matrix-method-analyte combination. The standard allows the use of an LCS or PT samples which are not required to contain every compound according to the standard as acceptable forms of ODOC.
Note that Section 1.2 states that 'Additional QC requirements that are either specified by method, regulation or project shall be met by laboratories.' In such a case, all analytes accredited under a method/technology may need to be included in the continuing DOC.

develop consensus standards for use by TNI's programs. This group has a support role in assisting other programs with activities such as guidance and standards interpretation.
fosters the generation of data of known and documented quality is through the National Environmental Laboratory Accreditation Program, or NELAP. The purpose of this program is to establish and implement a program for the accreditation of environmental laboratories.
is to establish and maintain a national PT program to support TNI’s National Environmental Laboratory Accreditation Program, and other activities.
Field Activities Program (NEFAP) Executive Committee is to establish and implement an accreditation program for field sampling and measurement organizations (FSMOs).
Audit Sample Program is to develop consensus standards for the manufacture and analysis of audit samples for source emission testing.
on a variety of topics of interest to the environmental measurement community. TNI also hosts two regularly scheduled meetings per year, typically in January and August. Both are a week long and involve open meetings of TNI committees as well as training courses and other special sessions.