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 |
|---|---|---|---|---|---|---|
| May-2010 | A | UFGS 43 02 00 Welding Pressure Piping | Apr-2006 | D | Section renumbered and renamed; Superseded by UFGS 40 05 13.96 Welding Process Piping. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jan-2008 | A | UFGS 43 11 00 Fans/Blowers/Pumps; Off-Gas | Jan-2008 | R | Incorporated EPAct05 requirements | |
| Apr-2008 | A | UFGS 43 11 00 Fans/Blowers/Pumps; Off-Gas | Apr-2008 | R | Compliance with CSI SectionFormat | |
| Nov-2012 | A | UFGS 43 11 00 Fans/Blowers/Pumps; Off-Gas | Apr-2008 | C | 1 | Replace reference to ASA S2.19 with ISO 1940-1 |
| Oct-2007 | A | UFGS 43 11 00 Fans/Blowers/Pumps; Off-Gas | Oct-2007 | R | Updated seismic criteria | |
| May-2020 | A | UFGS 43 11 00 Fans/Blowers/Pumps; Off-Gas | Apr-2008 | D | Superseded by UFGS 43 11 00.10 OFF-GAS FANS, BLOWERS AND PUMPS without revision to comply with MF 2011 in response to CCR 2189. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| May-2020 | A | UFGS 43 11 00.10 Off-Gas Fans, Blowers and Pumps | May-2020 | N | Superseding UFGS 43 11 00 FANS/BLOWERS/PUMPS; OFF-GAS without revision to comply with MF 2011 in response to CCR 2189. Nontechnical number and title change. | |
| Oct-2007 | A | UFGS 43 13 13.13 Vapor Phase Activated Carbon Adsorption Units | Oct-2007 | R | Updated seismic criteria | |
| May-2020 | A | UFGS 43 13 13.13 Vapor Phase Activated Carbon Adsorption Units | Oct-2007 | D | Superseded by UFGS 44 13 10.13 VAPOR PHASE ACTIVATED CARBON ADSORPTION UNITS without revision to comply with MF 2011 in response to CCR 2190. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Apr-2006 | N | UFGS 43 15 00.00 20 Low Pressure Compressed Air Piping (Non-Breathing Air Type) | Apr-2006 | R | To conform with CSI MasterFormat, replacing without change UFGS-15211N (August 2003) | |
| Jan-2008 | A | UFGS 43 21 13 Pumps: Water, Centrifugal | Jan-2008 | R | Incorporated EPAct05 requirements | |
| Aug-2017 | A | UFGS 43 21 13 Pumps: Water, Centrifugal | Jan-2008 | D | Superseded by UFGS 23 21 23 Hydronic Pumps. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jan-2007 | S | UFGS 43 21 13.00 40 Centrifugal Liquid Pumps | Jun-2006 | D | Information already provided in UFGS 43 21 13 Pumps: Water, Centrifugal Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jun-2006 | S | UFGS 43 21 13.00 40 Centrifugal Liquid Pumps | Jun-2006 | R | Title changed from CENTRIFUGAL PUMPS; Reference and Section References (SRF) updated | |
| Apr-2006 | N | UFGS 43 21 29 Flow Measuring Equipment (Potable Water) (Sewage Treatment Plant) | Apr-2006 | R | To conform with CSI MasterFormat, replacing without change UFGS-13401 (August 2004) | |
| Jan-2008 | A | UFGS 43 21 39 Pumps: Water, Vertical Turbine | Jan-2008 | R | Incorporated EPAct05 requirements | |
| Apr-2008 | A | UFGS 43 21 39 Pumps: Water, Vertical Turbine | Apr-2008 | R | Compliance with CSI SectionFormat | |
| Aug-2017 | A | UFGS 43 21 39 Pumps: Water, Vertical Turbine | Apr-2008 | D | Superseded by UFGS 23 21 23 Hydronic Pumps. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Aug-2018 | A | UFGS 43 31 13.13 10 Activated Carbon-Gas and Liquid Purification Filters | Aug-2018 | N | Superseding UFGS 43 31 13.14 DOWNFLOW LIQUID ACTIVATED CARBON ADSORPTION UNITS. Complete review and update including section number and title changes. | |
| Aug-2017 | A | UFGS 43 31 13.14 Downflow Liquid Activated Carbon Adsorption Units | Oct-2007 | C | 1 | Changed Material Safety Data Sheets (MSDS) to Safety Data Sheets (SDS). |
| Aug-2018 | A | UFGS 43 31 13.14 Downflow Liquid Activated Carbon Adsorption Units | Oct-2007 | D | Superseded by UFGS 43 31 13.13 10 ACTIVATED CARBON-GAS AND LIQUID PURIFICATION FILTERS. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 43 31 13.14 Downflow Liquid Activated Carbon Adsorption Units | Oct-2007 | R | Updated seismic criteria | |
| May-2018 | A | UFGS 43 31 14 Trickling Filter | Apr-2006 | D | Superseded by UFGS 46 53 22 TRICKLING FILTER. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Nov-2014 | A | UFGS 43 31 14 Trickling Filter | Apr-2006 | C | 1 | Deleted reference and revised par. 2.4.1 and 2.4.2 as noted in CCR 768. |
| Aug-2017 | A | UFGS 43 32 69 Chemical Feed Systems | Apr-2006 | D | Superseded by UFGS 46 30 00 Water and Wastewater Chemical Feed Systems. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jan-2008 | A | UFGS 43 32 76 Chlorine-Feeding Machines (Automatic, Semiautomatic and Manual) | Jan-2008 | R | Compliance with CSI SectionFormat | |
| Aug-2017 | A | UFGS 43 32 76 Chlorine-Feeding Machines (Automatic, Semiautomatic and Manual) | Jan-2008 | D | Superseded by UFGS 46 31 11 Chlorine Gas Feed Equipment. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jul-2006 | S | UFGS 43 41 13.19 40 Fiberglass Reinforced Polyester Storage Tank | Apr-2006 | D | Superseded by UFGS 43 41 13.19 Fiberglass Gas and Liquid Pressure Vessels Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Aug-2010 | S | UFGS 43 41 13.19 Fiberglass Gas Liquid Pressure Vessels | Aug-2008 | D | Section number and title change; Superseded by UFGS 43 41 16.16 Vertical Atmospheric Tanks and Vessels Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Aug-2008 | S | UFGS 43 41 13.19 Fiberglass Gas Liquid Pressure Vessels | Aug-2008 | R | Section References (SRF) update | |
| Jun-2006 | S | UFGS 43 41 13.19 Fiberglass Gas Liquid Pressure Vessels | Jun-2006 | N | New - Superseding UFGS 43 41 13.19 40 Fiberglass Reinforced Polyester Storage Tank | |
| Aug-2017 | S | UFGS 43 41 16.16 40 Vertical Atmospheric Tanks and Vessels | Aug-2017 | R | Tri-Annual Database Maintenance (TADM) completed . | |
| Aug-2014 | S | UFGS 43 41 16.16 40 Vertical Atmospheric Tanks and Vessels | Aug-2014 | R | Tri Annual Database Maintenance (TADM) completed | |
| Feb-2011 | S | UFGS 43 41 16.16 40 Vertical Atmospheric Tanks and Vessels | Feb-2011 | N | Renumbered to NASA fifth level; Superseding UFGS 43 41 16.16 with no title change | |
| Aug-2010 | S | UFGS 43 41 16.16 Vertical Atmospheric Tanks and Vessels | Apr-2018 | N | Superseding UFGS 43 41 13.19 Fiberglass Gas Liquid Pressure Vessels; submittal article configuration compliance; revised General Note; added subparts 1.2.1.2, 1.2.1.3, 2.3.1, and 3.2; added note to 3.5; other minor revisions throughout | |
| Feb-2011 | S | UFGS 43 41 16.16 Vertical Atmospheric Tanks and Vessels | Aug-2010 | D | NASA reclassified this as fifth level; Renumbered/ Superseded by UFGS 43 41 16.16 40 with same title Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 10 00 Air Pollution Control | Oct-2007 | R | Updated seismic criteria | |
| Nov-2022 | A | UFGS 44 10 00 Air Pollution Control | Nov-2022 | R | Complete review and update | |
| Feb-2011 | A | UFGS 44 11 33 Thermal (Catalytic) Oxidation Systems | Oct-2007 | D | Superseded by UFGS 44 13 52 Thermal (Catalytic) Oxidation Systems without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 11 33 Thermal (Catalytic) Oxidation Systems | Oct-2007 | R | Updated seismic criteria | |
| May-2020 | A | UFGS 44 13 10.13 Vapor Phase Activated Carbon Adsorption Units | May-2020 | N | Superseding UFGS 43 13 13.13 VAPOR PHASE ACTIVATED CARBON ADSORPTION UNITS without revision to comply with MF 2011 in response to CCR 2190. Nontechnical number change. | |
| May-2020 | A | UFGS 44 13 51 Thermal Oxidation Equipment | May-2020 | N | Superseding UFGS 44 13 52 THERMAL (CATALYTIC) OXIDATION SYSTEMS without revision to comply with MF 2011 in response to CCR 2196. Nontechnical number and title change. | |
| Feb-2011 | A | UFGS 44 13 52 Thermal (Catalytic) Oxidation Systems | Feb-2011 | N | Superseding UFGS 44 11 33 Thermal (Catalytic) Oxidation Systems without revision to comply with MF 2010 | |
| May-2020 | A | UFGS 44 13 52 Thermal (Catalytic) Oxidation Systems | Feb-2011 | D | Superseded by UFGS 44 13 51 THERMAL OXIDATION EQUIPMENT without revision to comply with MF 2011 in response to CCR 2196. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Aug-2020 | N | UFGS 44 41 00 Water Pollution Containment And Cleanup Equipment | Aug-2020 | N | New Unified Section; Superseding UFGS 44 41 00.00 20 WATER POLLUTION CONTAINMENT AND CLEANUP EQUIPMENT | |
| Feb-2024 | N | UFGS 44 41 00 Water Pollution Containment And Cleanup Equipment | Aug-2020 | C | 1 | In response to CCR 13725, updated to reduce the use of shall and change passive voice to active voice. |
| May-2020 | N | UFGS 44 41 00.00 20 Water Pollution Containment and Cleanup Equipment | May-2020 | N | New Navy-only specification for containment of fire suppressant discharge. | |
| Aug-2020 | N | UFGS 44 41 00.00 20 Water Pollution Containment and Cleanup Equipment | May-2020 | D | Superseded by unified section UFGS 44 41 00 WATER POLLUTION CONTAINMENT AND CLEANUP EQUIPMENT Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 41 13 Prefabricated Biochemical Wastewater Treatment Plant | Oct-2007 | D | Superseded by UFGS 46 07 53.16 Packaged Wastewater Treatment Equipment, Biochemical without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 41 13 Prefabricated Biochemical Wastewater Treatment Plant | Oct-2007 | R | Updated seismic criteria | |
| Feb-2011 | A | UFGS 44 41 13.19 Composting Toilet | Apr-2006 | D | Superseded by UFGS 46 07 53.19 Composting Toilet without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 42 13.00 10 Air Supply and Diffusion Equipment for Sewage Treatment | Apr-2006 | D | Superseded by UFGS 46 51 00.00 10 Air and Gas Diffusion Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Nov-2009 | N | UFGS 44 42 13.00 20 Aeration Equipment | Nov-2009 | R | Removed paragraph 1.2 regarding Y2K; Section References (SRF) update | |
| Feb-2011 | N | UFGS 44 42 13.00 20 Aeration Equipment | Nov-2009 | D | Superseded by UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Jan-2007 | N | UFGS 44 42 13.00 20 Aeration Equipment | Jan-2007 | R | No Nature of Change statement provided. | |
| Nov-2009 | N | UFGS 44 42 23 Circular Clarifier | Nov-2009 | R | Removed paragraph 1.2 regarding Y2K, SD-07 Certificates, and paragraph 1.8 | |
| Feb-2011 | N | UFGS 44 42 23 Circular Clarifier | Nov-2009 | D | Superseded by UFGS 46 43 21 Circular Clarifier Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 42 26 Comminutor | Apr-2006 | D | Superseded by UFGS 46 24 16 Comminutors without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Nov-2009 | N | UFGS 44 42 39 Grit Collecting Equipment | Nov-2009 | R | Removed paragraph 1.3 regarding Y2K and SD-07 Certificates | |
| Feb-2011 | N | UFGS 44 42 39 Grit Collecting Equipment | Nov-2009 | D | Superseded by UFGS 46 23 00 Grit Removal and Handling Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | N | UFGS 44 42 53 Parallel Plate [or Vertical Tube] Gravity Oil-Water Separator | Apr-2006 | D | Superseded by UFGS 46 25 14 Coalescing [or Vertical Tube] Oil-Water Separators without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 42 59 Continuous Loop Reactor Wastewater Treatment System | Apr-2006 | D | Superseded by UFGS 46 53 62 Continuous Loop Reactor Wastewater Treatment System without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 43 00 Filtration System | Oct-2007 | D | Superseded by UFGS 46 61 00 Filtration Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 43 00 Filtration System | Oct-2007 | R | Updated seismic criteria | |
| Feb-2011 | N | UFGS 44 44 46 Hydrotherapy Equipment | Apr-2006 | D | Superseded by UFGS 13 17 43 Hydrotherapy Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 44 53 Advanced Oxidation Processes (AOP) | Oct-2007 | D | Superseded without revision by UFGS 46 30 13 Advanced Oxidation Processes (AOP) to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 44 53 Advanced Oxidation Processes (AOP) | Oct-2007 | R | Updated seismic criteria | |
| Feb-2011 | A | UFGS 44 44 73 Ultraviolet Disinfection Equipment | Apr-2006 | D | Superseded by UFGS 46 66 56 Open-Channel Disinfection Equipment without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 46 00 Pumps; Sewage and Sludge | Apr-2006 | D | Superseded by UFGS 22 13 29 Sanitary Sewerage Pumps without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 46 13 Sludge-Collecting Equipment | Apr-2006 | D | Superseded by UFGS 46 71 16 Gravity Belt Thickeners without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 46 16 Recessed Chamber Filter Press System | Apr-2006 | D | Superseded by UFGS 46 76 23.16 Recessed Chamber Filter Presses without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 44 46 19 Sludge-Digester Gas, Heating, and Mixing System | Oct-2007 | D | Superseded by UFGS 46 73 00.35 Sludge-Digester Gas, Heating, and Mixing System without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Oct-2007 | A | UFGS 44 46 19 Sludge-Digester Gas, Heating, and Mixing System | Oct-2007 | R | Updated seismic criteria | |
| Feb-2011 | A | UFGS 44 46 20 Floating Cover for Sludge-Digestion Tanks | Apr-2006 | D | Superseded by UFGS 46 73 40 Floating Cover for Sludge-Digestion Tanks without revision to comply with MF 2010 Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| May-2021 | A | UFGS 46 07 13.13 Precipitation/Coagulation/Flocculation (P/C/F) Water Treatment | May-2021 | N | Superseding UFGS 02 51 13 PRECIPITATION/COAGULATION/FLOCCULATION WATER TREATMENT. | |
| Feb-2020 | N | UFGS 46 07 53 Packaged Wastewater Treatment Equipment | Feb-2020 | N | New Section combining UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration and 46 07 53.16 Packaged Wastewater Treatment Equipment, Biochemical | |
| Aug-2022 | N | UFGS 46 07 53 Packaged Wastewater Treatment Equipment | Aug-2022 | C | 1 | In response to CCR 11920, NASA tailoring was added to the Electrical Work paragraph (3.2.2) |
| Nov-2023 | N | UFGS 46 07 53 Packaged Wastewater Treatment Equipment | Feb-2020 | C | 2 | In response to CCR 13074, updated to imperative mood; removed "shall" from the Section text. |
| May-2016 | N | UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration | Feb-2011 | C | 3 | CCR 4187: Removed ASTM A167 reference from section. CCR 4581: Revised subpart 2.13.8 by replacing ASTM A176 with ASTM A240/A240M. |
| Aug-2013 | N | UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration | Feb-2011 | C | 2 | Modified note before Part 1, subparts 1.4, 2.16, 2.6.1, 2.7.3.1 (d), 2.8.3.1 (b3), 2.8.3.2 (b3, d1), 2.8.3.3 (b3), 2.13.10, 2.16, 3.3.1.1, 3.3.5.9, 3.5.2, 3.7.2 3.7.2.3 |
| Feb-2013 | N | UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration | Feb-2011 | C | 1 | Modified subpart 2.7.3.1 |
| Feb-2011 | N | UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration | Feb-2011 | N | Superseding UFGS 44 42 13.00 20 Aeration Equipment without revision to comply with MF 2010 | |
| Feb-2020 | N | UFGS 46 07 53.13 Packaged Wastewater Treatment Equipment, Aeration | Feb-2011 | D | Superseded by UFGS 46 07 53 Packaged Wastewater Treatment Equipment Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 46 07 53.16 Packaged Wastewater Treatment Equipment, Biochemical | Feb-2011 | N | Superseding UFGS 44 41 13 Packaged Wastewater Treatment Equipment, Biochemical without revision to comply with MF 2010 | |
| Feb-2020 | A | UFGS 46 07 53.16 Packaged Wastewater Treatment Equipment, Biochemical | Feb-2011 | D | Superseded by new (Navy) UFGS 46 07 53 PACKAGED WASTEWATER TREATMENT EQUIPMENT. Note: The last published PDF version of this Section is available in the previous release in the UFGS Archives. | |
| Feb-2011 | A | UFGS 46 07 53.19 Composting Toilet | Feb-2011 | N | Superseding UFGS 44 41 13.19 Composting Toilet without revision to comply with MF 2010 | |
| Feb-2011 | A | UFGS 46 20 20 Sewage Bar Screen and Mechanical Shredder | Feb-2011 | N | Superseding UFGS 22 13 23 Sewage Bar Screen and Mechanical Shredder without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 20 20 Sewage Bar Screen and Mechanical Shredder | May-2021 | R | Complete review and update. | |
| Aug-2013 | N | UFGS 46 23 00 Grit Removal and Handling Equipment | Feb-2011 | C | 1 | Modified subparts 2.1.4.3, 2.1.6.2, 2.1.7.4, 2.1.10.1(b), 2.3.5(d), 2.6 |
| Feb-2011 | N | UFGS 46 23 00 Grit Removal and Handling Equipment | Feb-2011 | N | Superseding UFGS 44 42 39 Grit Removal and Handling Equipment without revision to comply with MF 2010 | |
| Feb-2020 | N | UFGS 46 23 00 Grit Removal and Handling Equipment | Feb-2020 | R | Complete review and update. | |
| Feb-2011 | A | UFGS 46 24 16 Comminutors | Feb-2011 | N | Superseding UFGS 44 42 26 Comminutors without revision to comply with MF 2010 | |
| May-2021 | A | UFGS 46 24 16 Comminutors | May-2021 | R | Complete review and update. | |
| Nov-2013 | N | UFGS 46 25 14 Coalescing [or Vertical Tube] Oil-Water Separators | Feb-2011 | C | 1 | Revised subpart 3.2 |
| Feb-2011 | N | UFGS 46 25 14 Coalescing [or Vertical Tube] Oil-Water Separators | Feb-2011 | N | Superseding UFGS 44 42 53 Parallel Plate [or Vertical Tube] Gravity Oil-Water Separator without revision to comply with MF 2010 | |
| Aug-2017 | A | UFGS 46 30 00 Water and Wastewater Chemical Feed Systems | Aug-2017 | N | Superseding UFGS 43 32 69 Chemical Feed Systems; Complete review and update including section number and and title changes. | |
| Feb-2011 | A | UFGS 46 30 13 Advanced Oxidation Processes (AOP) | Feb-2011 | N | Superseding UFGS 44 44 53 Advanced Oxidation Processes (AOP) without revision to comply with MF 2010 | |
| Aug-2017 | A | UFGS 46 31 11 Chlorine Gas Feed Equipment | Aug-2017 | N | Superseding UFGS 43 32 76 Chlorine-Feeding Machines (Automatic, Semiautomatic and Manual); Complete review and update including section number and and title changes. | |
| Feb-2013 | N | UFGS 46 43 21 Circular Clarifier Equipment | Feb-2011 | C | 2 | Modified subpart 2.2.3.2 |
| Nov-2012 | N | UFGS 46 43 21 Circular Clarifier Equipment | Feb-2011 | C | 1 | Removed note before Part 1; modified note in subpart 2.2.1 |
Pages
WBDG Participating Agencies
