UFGS Changes and Revisions 
Related Materials: Policy on UFGS Changes and Revisions
Below is a listing of the Revisions and Changes made to UFGS Sections for each quarterly release.
To view a list for a specific UFGS Release, select the UFGS release date from the 'Release' drop-down and click 'Apply'.
To view a list of all the revisions and changes made to a specific UFGS Section, select 'Any' from the "Release' drop down, type the Section number into the Search bar and select the Section to view, then click 'Apply'.
After clicking 'Apply', you can PRINT REPORT, which will include the nature of the change/revision.
To view the complete detailed history of all the revisions and changes made to a UFGS Section, click on the Section title.
| KEY | PREPARING ACTIVITY (PA) | A Army | N Navy | F Air Force | S NASA |
|---|---|---|---|---|---|
| ACTION | N New | R Revision | C Change | D Deletion |
| Release | PA |
UFGS Section |
Date | Action | Change # | Nature of Change or Revision |
|---|---|---|---|---|---|---|
| Feb-2011 | N | UFGS 46 43 21 Circular Clarifier Equipment | Feb-2011 | N | Superseding UFGS 44 42 23 Circular Clarifier Equipment without revision to comply with MF 2010 | |
| Feb-2020 | N | UFGS 46 43 21 Circular Clarifier Equipment | Feb-2020 | R | Complete review and update. | |
| Feb-2011 | A | UFGS 46 51 00.00 10 Air and Gas Diffusion System | Feb-2011 | N | Superseding UFGS 44 42 13.00 10 Air Supply and Diffusion Equipment for Sewage Treatment without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 51 00.00 10 Air and Gas Diffusion System | May-2021 | R | Complete review and update including section title change. | |
| May-2018 | A | UFGS 46 53 22 Trickling Filter | May-2018 | N | Superseding UFGS 43 31 14 TRICKLING FILTER. Complete review and update including section number change. | |
| Aug-2014 | A | UFGS 46 53 62 Continuous Loop Reactor (CLR) Wastewater Treatment System | Feb-2011 | C | 1 | Added paint requirements as noted in CCR 2518 |
| Feb-2011 | A | UFGS 46 53 62 Continuous Loop Reactor (CLR) Wastewater Treatment System | Feb-2011 | N | Superseding UFGS 44 42 59 Continuous Loop Reactor Wastewater Treatment System without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 53 62 Continuous Loop Reactor (CLR) Wastewater Treatment System | May-2021 | R | Complete review and update including section title change. | |
| Aug-2014 | A | UFGS 46 61 00 Filtration Equipment | Feb-2011 | C | 1 | Added paint requirements as noted in CCR 2519 |
| Feb-2011 | A | UFGS 46 61 00 Filtration Equipment | Feb-2011 | N | Superseding UFGS 44 43 00 Filtration Equipment without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 61 00 Filtration Equipment | May-2021 | R | Complete review and update. | |
| Feb-2011 | A | UFGS 46 66 56 Open-Channel Disinfection Equipment | Feb-2011 | N | Superseding UFGS 44 44 73 Ultraviolet Disinfection Equipment without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 66 56 Open-Channel Disinfection Equipment | May-2021 | R | Complete review and update. | |
| Feb-2011 | A | UFGS 46 71 16 Gravity Belt Thickeners | Feb-2011 | N | Superseding UFGS 44 43 13 Sludge-Collecting Equipment without revision to comply with MF 2010 | |
| Aug-2014 | A | UFGS 46 73 00.35 Sludge-Digester Gas, Heating, and Mixing System | Feb-2011 | C | 1 | Deleted publication as noted in CCR 776 |
| Feb-2011 | A | UFGS 46 73 00.35 Sludge-Digester Gas, Heating, and Mixing System | Feb-2011 | N | Superseding UFGS 44 46 19 Sludge-Digester Gas, Heating, and Mixing System without revision to comply with MF 2010 | |
| Nov-2018 | A | UFGS 46 73 00.35 Sludge-Digester Gas, Heating, and Mixing System | Feb-2011 | D | UFGS is used very infrequently. Archived; no replacement. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 46 73 10 Floating Cover for Sludge-Digestion Tanks | Feb-2011 | N | Superseding UFGS 44 46 20 Floating Cover for Sludge-Digestion Tanks without revision to comply with MF 2010 | |
| Nov-2018 | A | UFGS 46 73 10 Floating Cover for Sludge-Digestion Tanks | Feb-2011 | D | UFGS is used very infrequently. Archived; no replacement. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Aug-2014 | A | UFGS 46 76 23.16 Recessed Chamber Filter Presses | Feb-2011 | C | 1 | Added paint requirements as noted in CCR 2520 |
| Feb-2011 | A | UFGS 46 76 23.16 Recessed Chamber Filter Presses | Feb-2011 | N | Superseding UFGS 44 46 16 Recessed Chamber Filter Press System without revision to comply with MF 2010 | |
| Nov-2018 | A | UFGS 46 76 23.16 Recessed Chamber Filter Presses | Feb-2011 | D | UFGS is used very infrequently. Archived; no replacement. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| May-2014 | A | UFGS 48 06 15 Turbine Oil | May-2014 | N | Full review, updates and superseding UFGS 48 13 19.00 10 Turbine Oil | |
| Feb-2020 | A | UFGS 48 06 15 Turbine Oil | May-2014 | C | 1 | Updated paragraphs 1.4, 2.1.1, 2.1.2, 2.2, 2.3 and 2.4 in response to CCR 4578. |
| Aug-2020 | A | UFGS 48 06 15 Turbine Oil | Aug-2020 | R | Complete review and update. | |
| Nov-2023 | A | UFGS 48 06 15 Turbine Oil | Nov-2023 | R | Complete review and update. | |
| May-2014 | A | UFGS 48 13 19.00 10 Turbine Oil | Nov-2008 | D | Superseded by UFGS 48 06 15 Turbine Oil. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Nov-2008 | A | UFGS 48 13 19.00 10 Turbine Oil | Nov-2008 | N | New section | |
| May-2017 | F | UFGS 48 14 00 Solar Photovoltaic Systems | May-2017 | N | New Section. | |
| May-2015 | N | UFGS 48 14 13.00 20 Solar Liquid Flat Plate and Evacuated Tube Collectors | May-2015 | R | Title changed from SOLAR LIQUID FLAT PLATE COLLECTORS. Section revised throughout. Incorporated evacuated tube collectors. Modifications included in Technical Notes, references and submittals. | |
| May-2011 | S | UFGS 48 14 13.00 20 Solar Liquid Flat Plate and Evacuated Tube Collectors | May-2011 | R | Reference update: modified notes in subparts 1.4.1 and 1.5 | |
| May-2017 | N | UFGS 48 15 00 Wind Generator System | May-2017 | N | New Section. | |
| May-2017 | A | UFGS 48 16 00 Landfill Gas Systems | May-2017 | N | New Section. |
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