id,agency_id,docket_id,title,document_type,subtype,posted_date,posted_year,posted_month,comment_start_date,comment_end_date,last_modified,fr_doc_num,open_for_comment,withdrawn,object_id
EPA-HQ-OW-2002-0028-0050,EPA,EPA-HQ-OW-2002-0028,Method 245.2 (Automated Cold Vapor Technique) [W-98-15-I-26],Supporting & Related Material,Fact/Data Sheet,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:49Z,,0,0,09000064b8e588db
EPA-HQ-OW-2002-0028-0036,EPA,EPA-HQ-OW-2002-0028,"Letter from William Telliard to Dr. Lian Liang, Cebam Analytical, responding to 11/16/95 letter providing comments  on Method 1631 [W-98-15-I-3]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:47Z,,0,0,09000064b8e587a2
EPA-HQ-OW-2002-0028-0057,EPA,EPA-HQ-OW-2002-0028,Determination of Volatile Mercury Species at the Picogram Level by Low-Temperature Gas Chromatography with Cold Vapour Atomic Fluorescence Detection [W-98-15-I-29],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e588e2
EPA-HQ-OW-2002-0028-0074,EPA,EPA-HQ-OW-2002-0028,Principles of Environmental Analysis [W-98-15-III-C-12],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:54Z,,0,0,09000064b8e58d2e
EPA-HQ-OW-2002-0028-0077,EPA,EPA-HQ-OW-2002-0028,Use of Statistics to Develop and Evaluate Analytical Methods (AOAC Guidelines) [W-98-15-III-B-16],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:54Z,,0,0,09000064b8e58d31
EPA-HQ-OW-2002-0028-0041,EPA,EPA-HQ-OW-2002-0028,"Response from William Telliard to Colin Davies, Brooks Rand, Ltd., regarding proposed changes to Method 1631 [W-98-15-I-10]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d1
EPA-HQ-OW-2002-0028-0059,EPA,EPA-HQ-OW-2002-0028,Trace Metal Cleanroom [W-98-15-I-16],Supporting & Related Material,Report,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e588e4
EPA-HQ-OW-2002-0028-0063,EPA,EPA-HQ-OW-2002-0028,Settlement Agreement [W-98-15-IV-B-1],Supporting & Related Material,"Agreement, Contract",2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d23
EPA-HQ-OW-2002-0028-0071,EPA,EPA-HQ-OW-2002-0028,"National Primary Drinking Water Regulations; Synthetic
Organic Chemicals and Inorganic Chemicals; Final Rule  [W-98-15-III-A-12]",Supporting & Related Material,Publication - Previous/Related FR Notice,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:53Z,,0,0,09000064b8e58d2b
EPA-HQ-OW-2002-0028-0054,EPA,EPA-HQ-OW-2002-0028,Method 245.1 Determination of Mercury in Water by Cold Vapor Atomic Absorption Spectrometry [W-98-15-I-31],Supporting & Related Material,Procedure,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:50Z,,0,0,09000064b8e588df
EPA-HQ-OW-2002-0028-0075,EPA,EPA-HQ-OW-2002-0028,Detailed Responses to Comments on EPA Method 1631 [W-98-15-III-F-1],Supporting & Related Material,Comment Response,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:54Z,,0,0,09000064b8e58d2f
EPA-HQ-OW-2002-0028-0049,EPA,EPA-HQ-OW-2002-0028,"Letter from Lian Liang, Cebam Analytical, (11/16/95) to William Telliard providing comments and attachments on draft Method 1631 [W-98-15-I-5]",Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:49Z,,0,0,09000064b8e588da
EPA-HQ-OW-2002-0028-0051,EPA,EPA-HQ-OW-2002-0028,"Inquiry from Brooks Rand, LTD., regarding proposed changes to Method 1631 [W-98-15-I-9]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:49Z,,0,0,09000064b8e588dc
EPA-HQ-OW-2002-0028-0061,EPA,EPA-HQ-OW-2002-0028,"Memorandum from William Wheeler, Director, AMS:
Data Files Used to Estimate Small Entity Revenues with attachments (U.S. State and Local Government Finances
by Level of Government; 1995,1996 and Bureau of Census Firm Pilot) [W-98-15-III-E-5]",Supporting & Related Material,Memorandum,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e58d21
EPA-HQ-OW-2002-0028-0060,EPA,EPA-HQ-OW-2002-0028,Results of the EPA Method 1631 Interlaboratory Validation Study [W-98-15-I-39],Supporting & Related Material,Report,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e588e5
EPA-HQ-OW-2002-0028-0073,EPA,EPA-HQ-OW-2002-0028,"Letter to William Snee, Aluminum Company of America, from Robert Perciasepe with 2 enclosures (Comment on “An Alternative Minimum Level Definition for Analytical Quantification” and related correspondence; Technical and Policy Evaluation of the IQE) [W-98-15-III-D-2]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:53Z,,0,0,09000064b8e58d2d
EPA-HQ-OW-2002-0028-0042,EPA,EPA-HQ-OW-2002-0028,Briefing Materials presented at PittCon 1994 re: mercury and low-level metals sampling [W-98-15-I-2],Supporting & Related Material,Report,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d2
EPA-HQ-OW-2002-0028-0076,EPA,EPA-HQ-OW-2002-0028,Environmental Management Guide for Small Laboratories [W-98-15-III-B-7],Supporting & Related Material,Publication - USEPA,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:54Z,,0,0,09000064b8e58d30
EPA-HQ-OW-2002-0028-0066,EPA,EPA-HQ-OW-2002-0028,"Mercury in Wastewater: Discharges to the Waters of the
State (the Maine Report) [W-98-15-III-B-2]",Supporting & Related Material,Report,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d26
EPA-HQ-OW-2002-0028-0046,EPA,EPA-HQ-OW-2002-0028,Guidance on Establishing Trace Metal Clean Rooms in Existing Facilities [W-98-15-I-15],Supporting & Related Material,Publication - USEPA,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d6
EPA-HQ-OW-2002-0028-0070,EPA,EPA-HQ-OW-2002-0028,Results of Method 1631 Application to Effluent Matrices [W-98-15-II-B-2],Supporting & Related Material,Report,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:53Z,,0,0,09000064b8e58d2a
EPA-HQ-OW-2002-0028-0037,EPA,EPA-HQ-OW-2002-0028,"Inquiry from Dr. P.B. Stockwell regarding use of ""Merlin Plus"" Atomic Fluorescence detector as an option in Method 1631 [W-98-15-I-6]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:47Z,,0,0,09000064b8e588cd
EPA-HQ-OW-2002-0028-0048,EPA,EPA-HQ-OW-2002-0028,Guidance on the Documentation and Evaluation of Trace Metals Data Collected for Clean Water Act Compliance Monitoring [W-98-15-I-18],Supporting & Related Material,Publication - USEPA,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:49Z,,0,0,09000064b8e588d9
EPA-HQ-OW-2002-0028-0043,EPA,EPA-HQ-OW-2002-0028,"EPA Method 1631, Revision D: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry [W-01-05-V-B-1]",Supporting & Related Material,Publication - USEPA,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d3
EPA-HQ-OW-2002-0028-0045,EPA,EPA-HQ-OW-2002-0028,"Letter from William Telliard to Dr. Carl Watras, State of Wisconsin, re: WI DNR research on measurement and effects of mercury and mercury species on the freshwater aquatic environment [W-98-15-I-4]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d5
EPA-HQ-OW-2002-0028-0044,EPA,EPA-HQ-OW-2002-0028,"Record of phone conversation with Colin Davies, Brooks Rand, Ltd., requesting modification of Mehod 1631 to allow a single gold trap for analyses rather than the dual trap currently specified in the method [W-98-15-I-7]",Supporting & Related Material,Meeting Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:48Z,,0,0,09000064b8e588d4
EPA-HQ-OW-2002-0028-0052,EPA,EPA-HQ-OW-2002-0028,"Mercury, Total recoverable, atomic absorption spectrometric, flameless (1-3462-78) [W-98-15-I-25]",Supporting & Related Material,Publication,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:50Z,,0,0,09000064b8e588dd
EPA-HQ-OW-2002-0028-0058,EPA,EPA-HQ-OW-2002-0028,"Memorandum from Sheila Frace, Director, EAD [W-98-15-III-E-3]",Supporting & Related Material,Memorandum,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e588e3
EPA-HQ-OW-2002-0028-0055,EPA,EPA-HQ-OW-2002-0028,"Office of Water Quality Technical Memorandum 94.09 (1/28/94) transmitting ""A Protocol for the Collection and Processing of Surface Water Samples for Subsequent Determination of Trace Elements, Nutrients, and Major Ions in Filtered Waters [W-98-15-I-13]",Supporting & Related Material,Memorandum,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:50Z,,0,0,09000064b8e588e0
EPA-HQ-OW-2002-0028-0062,EPA,EPA-HQ-OW-2002-0028,Guidelines Establishing Test Procedures for the Analysis of Pollutants; Measurement of Mercury in Water; Proposed Rule [W-98-15-I-48],Supporting & Related Material,Publication - Previous/Related FR Notice,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:51Z,,0,0,09000064b8e58d22
EPA-HQ-OW-2002-0028-0065,EPA,EPA-HQ-OW-2002-0028,Environmental Laboratories: Moving Toward the 21st Century [W-98-15-III-C-4],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d25
EPA-HQ-OW-2002-0028-0072,EPA,EPA-HQ-OW-2002-0028,"Some Statistical and Conceptual Issues in the Detection
of Low-Level Environmental Pollutants [W-98-15-III-C-10]",Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:53Z,,0,0,09000064b8e58d2c
EPA-HQ-OW-2002-0028-0039,EPA,EPA-HQ-OW-2002-0028,NBS Clean Laboratories for Trace Element Analysis [W-98-15-I-12],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:47Z,,0,0,09000064b8e588cf
EPA-HQ-OW-2002-0028-0056,EPA,EPA-HQ-OW-2002-0028,Performance-based Measurement System; Notice of Intent [W-98-15-I-24],Supporting & Related Material,Publication - Previous/Related FR Notice,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:50Z,,0,0,09000064b8e588e1
EPA-HQ-OW-2002-0028-0069,EPA,EPA-HQ-OW-2002-0028,"Mercury Pollution Integration and Synthes, Carl J. Watras  [W-98-15-I-43]",Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:53Z,,0,0,09000064b8e58d29
EPA-HQ-OW-2002-0028-0064,EPA,EPA-HQ-OW-2002-0028,"GAO, Congress Receipt of Delivery [W-98-15-III-J-1]",Supporting & Related Material,,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d24
EPA-HQ-OW-2002-0028-0040,EPA,EPA-HQ-OW-2002-0028,"Response from William Telliard to Dr. P.B. Stockwell regarding use of the ""Merlin Plus"" atomic fluorescence mercury detector [W-98-15-I-11]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:47Z,,0,0,09000064b8e588d0
EPA-HQ-OW-2002-0028-0047,EPA,EPA-HQ-OW-2002-0028,Results of the EPA Method 1631 Validation Study (single laboratory [W-98-15-I-38],Supporting & Related Material,Study,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:49Z,,0,0,09000064b8e588d8
EPA-HQ-OW-2002-0028-0068,EPA,EPA-HQ-OW-2002-0028,Water Quality Guidance for the Great Lakes System: Supplementary Information Document (SID) [W-98-15-III-B-14-],Supporting & Related Material,Publication - USEPA,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d28
EPA-HQ-OW-2002-0028-0038,EPA,EPA-HQ-OW-2002-0028,"Response to Colin Davies, Brooks Rand, regarding use of single-stage amalgamation procedure for mercury analysis via Method 1631 [W-98-15-I-8]",Supporting & Related Material,Letter,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:47Z,,0,0,09000064b8e588ce
EPA-HQ-OW-2002-0028-0053,EPA,EPA-HQ-OW-2002-0028,Determination of Mercury in Seawater at Sub-Nanogram per Liter Levels [W-98-15-I-28],Supporting & Related Material,Publication - Copyrighted Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:50Z,,0,0,09000064b8e588de
EPA-HQ-OW-2002-0028-0067,EPA,EPA-HQ-OW-2002-0028,Eighteenth Annual EPA Conference [W-98-15-III-C-9],Supporting & Related Material,Meeting Materials,2026-04-27T04:00:00Z,2026,4,,,2026-04-27T22:33:52Z,,0,0,09000064b8e58d27
EPA-HQ-OW-2002-0028-0027,EPA,EPA-HQ-OW-2002-0028,"Water Quality Standards; Establishment of Numeric Criteria for Priority Toxic Pollutants; States' Compliance Revision of Metals Criteria; Interim final rule, notice of data availability and request for comments [W-98-15-III-A-9]",Rule,Interim Final Rule,2025-06-12T04:00:00Z,2025,6,2025-06-12T04:00:00Z,,2025-06-12T21:04:17Z,95-10148,0,0,09000064b8e00a16
EPA-HQ-OW-2002-0028-0029,EPA,EPA-HQ-OW-2002-0028,Legacy Index for Docket W-98-15 (Sections I - IV) and W-01-05 (Sections V - VI),Supporting & Related Material,Index,2025-06-12T04:00:00Z,2025,6,,,2025-06-12T21:17:19Z,,0,0,09000064b8e00a18
EPA-HQ-OW-2002-0028-0028,EPA,EPA-HQ-OW-2002-0028,"Guidelines Establishing Test Procedures for the Analysis of Pollutants; EPA Method 1613; Final Rule 
[W-98-15-III-A-6]",Rule,Final Rule,2025-06-12T04:00:00Z,2025,6,2025-06-12T04:00:00Z,,2025-06-12T21:10:28Z,97-23841,0,0,09000064b8e00a17