Documents that were revised in or added to Docket ID EPA-HQ-OLEM-2018-0846 after posting for public comment

                               Date: 07-26-2021
             Author: United States Environmental Protection Agency

The methods and summary reports were revised based on public comments received, and the Revised Document IDs are the final versions:

Original Title
Original Document ID
Revised Title
Revised Document ID
Proposed Method 8327 Procedure
EPA-HQ-OLEM-2018-0846-0002
SW-846 Method 8327
EPA-HQ-OLEM-2018-0846-0113

SW-846 Method 3512
EPA-HQ-OLEM-2018-0846-0112
Method 8327 Executive Summary
EPA-HQ-OLEM-2018-0846-0003
Revised Method 8327 Executive Summary
EPA-HQ-OLEM-2018-0846-0111
Method 8327 Statistical Analysis Report
EPA-HQ-OLEM-2018-0846-0004
Revised Method 8327 Statistical Analysis Report
EPA-HQ-OLEM-2018-0846-0115
Method 8327 Validation Summary Report 060719 final
EPA-HQ-OLEM-2018-0846-0005
Revised Method 8327 Quality Control Summary Report
EPA-HQ-OLEM-2018-0846-0116
The following documents were added to the final docket along with the revised methods and summary reports:
Title
Document ID
Notes
Method 8327 Reference 10 - Murray et al., Definitions and Terms Related to Mass Spectrometry (IUPAC Recommendations 2013)
EPA-HQ-OLEM-2018-0846-0105
Added
Method 3512 Reference 4  -  Mikhail and Kimel (1961), Densities and Viscosities of Methanol-Water Mixtures
EPA-HQ-OLEM-2018-0846-0106
Added
Method 8327 Reference 1  -  ASTM D7979-20
EPA-HQ-OLEM-2018-0846-0107
Also Reference 1 in Method 3512
Method 8327 Reference 2  -  USEPA Region 5 Laboratory Standard Operating Procedure for PFAS by LC-MS-MS
EPA-HQ-OLEM-2018-0846-0108
Also Reference 2 in Method 3512; This is the method version that was provided to laboratories for the internal phase of the validation study
Method 8327 Reference 9  -  EPA Method 533
EPA-HQ-OLEM-2018-0846-0109
Added
Method 8327 Reference 8  -  Woudneh et al. (2019), Effect of Sample Storage on Determination of 29 PFAS
EPA-HQ-OLEM-2018-0846-0110
Added
Final Response to Comments Update VII Methods 3512 and 8327
EPA-HQ-OLEM-2018-0846-0114
Added
Validation study compiled raw data Methods 3512 and 8327
EPA-HQ-OLEM-2018-0846-0117
Excel spreadsheet containing measured concentration of each target analyte and surrogate in all study samples
Validation Study Phase IIb study protocol `Method 8327 draft 2018-08-10'
EPA-HQ-OLEM-2018-0846-0118
Method version that was provided to laboratories for the external phase of the validation study
Validation Study Phase IIb study instructions September 10 2018
EPA-HQ-OLEM-2018-0846-0119
Study instructions that were provided to laboratories for the external phase of the validation study

The following documents were included in the docket as references for Method 8327 when it was posted for public comment, but the references section was reordered in the final version of the method:
Title
Document ID
Notes
Reference 1  -  ASTM D7979-15  -  Perfluorinated Compounds by LC-MS-MS
EPA-HQ-OLEM-2018-0846-0006
No longer referenced in Method 8327; this reference was replaced with ASTM D7979-20
Reference 2  -  Shoemaker et al.  -  EPA Method 537 Research Summary
EPA-HQ-OLEM-2018-0846-0007
Included as Reference 3 in the final version of Method 8327
Reference 3  -  EPA Method 537.1  -  PFAS in Drinking Water by SPE and LC-MS-MS
EPA-HQ-OLEM-2018-0846-0008
Included as Reference 4 in the final version of Method 8327
Reference 4  -  OSHA Safety and Health Standards  -  29 CFR 1910.120 and 1910.1200
EPA-HQ-OLEM-2018-0846-0009
Included as Reference 5 in the final version of Method 8327
Reference 5  -  Standard Practices for Sampling Water  -  ASTM D3370-76
EPA-HQ-OLEM-2018-0846-0010
Included as Reference 6 in the final version of Method 8327 and as Reference 3 in the final version of Method 3512
Reference 6  -  Burrows  -  Basic RSE Calculator
EPA-HQ-OLEM-2018-0846-0011
Included as Reference 7 in the final version of Method 8327
Reference 7  -  Woudneh et al.  -  Effect of Sample Storage on Determination of PFAS
EPA-HQ-OLEM-2018-0846-0012
No longer referenced in Method 8327; this reference was replaced with a journal article by the same authors