Revision History for U.S. Geological Survey Scientific Investigations Report 2021-5088 Edited by Scott Paulinski Development of a Groundwater-Simulation Model in the Los Angeles Coastal Plain, Los Angeles County, California ----------------------------------------------------- First posted September 28, 2021 ----------------------------------------------------- Revised and reposted May 10, 2023 (Version 1.1) Chapter B. Development of a Chronostratigraphic Hydrogeologic Framework Model-- Figure B1, p. 16--Changed "Chronostratigraphic unit" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B3, p. 19--Changed "Control Well" symbol colors to be consistent with "Chronostratigraphic unit" colors of all other figures within the report. Figure B4, p. 26-27--Changed "Chronostratigraphic unit boundary" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B5, p. 30-31--Changed "Chronostratigraphic unit boundary" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B6, p. 32--Changed "Chronostratigraphic unit" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B20, p. 54-55--Changed "Chronostratigraphic unit boundary" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B21, p. 56-57--Changed "Chronostratigraphic unit boundary" colors to be consistent with chronostratigraphic unit colors of all other figures within the report. Figure B22, p. 58-59--Changed "Chronostratigraphic unit boundary" colors to be consistent with chronostratigraphic unit colors of all other figures within the report.