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TERRA LAND GROUP , LLC 3. Page 5-17 of the LSJRFS states:Stanislaus River to Paradise Cut.The confluence of the San Joaquin and Stanislaus Rivers defines the upstream extent of the hydraulic model used for this study. 4. Page ES-2 of the LSJ RFS states: Analysis of the study area is challenged by the presence of three sources of flooding,the Delta Front, Calaveras River and San Joaquin River.This results in commingled floodplains for the North and Central Stockton areas. The distributary nature of the Delta also affects Delta water levels,because high flows from the Sacramento River may"fill"the Delta prior to a peak inflow on the San Joaquin River as occurred in 1997,raising water levels on the Delta front levees. 5. Page 5-27 of the LSJ RFS states:2.1.1 FLOODING Problem:There is significant risk to public health, safety and property in the study area associated with flooding. The study area is located in the Central Valley of California which has very little topographic relief,resulting in potential flooding of areas far from water courses... (See Enclosure 1) Potential Impacts to Consider: TLG believes that all Mossdale Tract Flood modeling and Adequate Progress reports that have been publicly released to date have failed to fully consider and provide mitigation measures for: (i) Unresolved and continuing sedimentation issues that continue to reduce channel flow capacity in and along the South Delta Lower San Joaquin River System;and (ii)Climate change and continued uncertainty relating to its effect on increasing the total potential volumes of channel flows to be expected in and along the South Delta Lower San Joaquin River System; COMMENT: Martin Harris and several other South Manteca rural neighbors attended a Central Valley Flood Protection Board Workshop on February 14,2020.Although a number of climate change presentations were made by staff,flood models and associated drainage flow volumes related to climate change do not appear to have been fully determined. QUESTION:What effect will this have on determining the total amount of reservoir storage water that can be safely stored in higher elevations throughout the Sacramento and San Joaquin River Reservoir System(s)? (iii)A Stanislaus River right bank levee breach in the areas west of the City of Ripon;and (iv) Limited topographic relief to ground surface areas in and along the South Delta; QUESTION:Will mitigation measures be included to prevent any potential for reverse channel flows and associated backwater effects that may impede the natural flow of Old River as identified on pages 3A-28 and 3A-29 of the Bay Delta Conservation Plan California WaterFix Final EIR/EIS(December 2016)?(See Enclosures 1&13) (v)Various federal and state-funded Manteca and Lathrop area highway construction projects as presented in (a)the 2014 San Joaquin Council of Governments Sustainable Communities Strategy, Draft EIR and 2015 FTIP Conformity Document and in(b)other highway projects approved 5151 E. ALMONDWOOD DRIVE MANTECA, CA 95337 Pg.2 of 6