RESOLUTION NO. 2018/24  RESOLUTION OF THE CITY COUNCIL OF THE CITY OF ANTIOCH AUTHORIZING THE ADOPTION OF THE CONTRA COSTA COUNTY OPERATIONAL AREA HAZARD MITIGATION PLAN UPDATE  (PW 705)  WHEREAS, all of Contra Costa County has exposure to natural hazards that increase the risk to life, property, environment and the County's economy; and WHEREAS; pro-active mitigation of known hazards before a disaster event can WHEREAS, The Disaster Mitigation Act of 2000 (Public Law 106-390) established new requirements for pre- and post-disaster hazard mitigation programs;  reduce or eliminate long-term risk to life and property; and  and  WHEREAS; a coalition of Contra Costa County, Cities, Towns and Special Districts with like planning objectives has been formed to pool resources and create consistent mitigation strategies within the Contra Costa County Operational Area  planning area, and'  WHEREAS, the coalition has completed a planning process that engages the public, assesses the risk and vulnerability to the impacts of natural hazards, develops a mitigation strategy consistent with a set of uniform goals and objectives, and creates a  plan for implementing, evaluating and revising this strategy;  NOWTHEREFORE, BE IT RESOLVED by the City Council of the City of Antioch 1.) Adopts in its entirety, Volume land the introduction and chapter 2-t the City of Antioch jurisdictional annex (Exhibit "A"), and the appendices ofVolume II of the Contra Costa County Operational Area Hazard Mitigation Plan (HMP). 2.) Will use the adopted and approved portions of the HMP to guide pre- and post- 3.) Will coordinate the strategies identified in the HMP with other planning programs 4.) Will continue its support of the Steering Committee and continue to participate in 5.) Will help to promote and support the mitigation successes of all HMP Planning  that it does hereby authorize and approve:  disaster mitigation of the hazards identified. and mechanisms under its jurisdictional authority. the Planning Partnership as described by the HMP.  Partners.    RESOLUTION NO. 2018/24  Page 2  IHEREBY CERTIFY that the foregoing resolution was adopted by the City Council of the City of Antioch at a regular meeting thereof held on the 27h day of  February 2018, by the following vote:  AYES: NOES:  Council Members Wilson, Tiscareno, Ogorchock and Mayor Pro Tem Thorpe  None  ABSENT: Mayor Wright ABSTAIN: None  G61  ARNE SIMONSEN, CMC  CITY CLERK OF THE GITY OF ANTIOCH    RESOLUTION NO. 2018/24  Page 3  Exhibit "A"  Introduction to Volume II and the Antioch Jurisdictional Annexation of the Contra Costa County Operational Area Hazard Mitigation Plan  Update    NTRODUCTION  BACKGROUND Regulations (44 CFR):  Thel Federal Emergency Management Agency (FEMA) encourages multijurisdictional planning for hazard mitigation. All participating gjurisdictions must meet the requirements of Chapter 44 oft the Code of Federal  Mult-jurisdictional plans (e.g. watershed plans) may be accepted, as appropriate, as long as each jurisdiction has participated in the process and has officially adopted the plan." (Section 201.6.a(4)) For the Contra Costa County Hazard Mitigation Plan, al Planning Partnership was formed to leverage resources and to meet requirements oft the federal Disaster Mitigation. Act (DMA) for as many eligible local governments as "Any county, municipality, city, town, township, public authority, school district, special district, intrastate district, council of governments (regardless of whether the council of governments is incorporated as ar nonprofit corporation under State law), regional or interstate government entity, or agency or instrumentality ofal local government; any Indian tribe or authorized tribal organization, or Alaska Native village or organization; and any rural community, unincorporated town or village, or other There are two types of Planning Partners that participated ini this process, with distinct needs and capabilities:  possible. Thel DMA defines al local government as follows:  public entity."  Incorporated municipalities (cities, towns and the County)  Special purpose districts.  Each participating planning partner has prepared aj jurisdiction-specific annex to this plan. These annexes, as well  asi information on the process by which they were created, are contained in this volume.  THE PLANNING PARTNERSHIP Initial Solicitation and Letters of Intent  The planning team solicited the participation of all eligible municipalities and special purpose districts at the outset oft this project. A kickoff meeting was held on December 2, 20151 to identify potential stakeholders and planning partners for this process. The purpose oft thei meeting was toi introduce the planning process to jurisdictions in the County that could have as stake in the outcome oft the planning effort. All eligible local governments, including prior and potential planning partners, within the planning area were invited to attend. The  goals oft the meeting were as follows:  Provide an overview oft the Disaster Mitigation Act. Review the 2011 Plan and Planning Partnership Outline the work plan fort this hazard mitigation plan.  TETRA TECH    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning Partner Annexes Describe the benefits of mult-jurisdictional planning. Outline planning partner expectations. Solicit planning partners. Solicit oluntepccommemditlons for the steering committee.  From these initial efforts, 48 interested local governments were provided with al list of planning partner expectations developed by the planning team and werei informed oft the obligations required for participation. Local governments wishing toj join the planning effort were asked to provide the planning team with a' "notice of intent to participate" that agreed tot thej planning partner expectations (see Appendix A) and designated a point of contact for their jurisdiction. In all, the planning team received formal commitment from 391 planning partners. Four oft these commitments were: from new planning partners that did not participate int the 2011 planning effort (Contra Costa Water District, Crockett Community Services District, Sanl Ramon Valley Unified School District and San Ramon Geologic Abatement District). Oft these new planning partners, only Contra Costa Water District was covered by aj prior hazard mitigation plan. Contra Costa Water District was aj participant in the 2011 regional planning effort sponsored by the Association of Bay Area Governments (ABAG). Maps for each participating city are provided in thei individual annex for that city in this volume. Maps showing thel location of participating  special purpose districts by district type are provided att the end oft this introduction.  Planning Partner Expectations  The planning team developed thei following list of planning partner expectations, which were confirmed at the  kickoff meeting held on December 2, 2015 (see Appendix A for details):  Complete administrative tasks: Complete al letter ofintent. Designate points of contact. Approve the steering committee. Participate, as able, in additional opportunities: Attend steering committee meetings. Attend or host public meetings or open houses. Support the steering committee. Support thej public involyement strategy. Participate in the critical facility update. Complete the jurisdictional annex template: Attend the mandatory workshop. Perform a capability assessment. Review the risk assessment. Review county-wide mitigation recommendations. Develop ai mitigation action plan.  Participate in and advertise the public review and comment period prior to adoption.  Adopt the plan.  By adopting this plan, each planning partner also agrees to thej plani implementation and maintenance protocol established in Volume 1. Failure to meet these criteria may result inaj partner being dropped from thej partnership  by the Steering Committee, and thus losing eligibility under thes scope ofthis] plan.  xvi  TETRA TECH    Introduction  Linkage Procedures  Eligible local jurisdictions that did not participate in development of this multi-jurisdictional plan may comply with DMA requirements by linking to this plan following the procedures outlined in Appendix B.  ANNEX-PREPARATION PROCESS  Templates  Templates were created tol help the Planning Partners prepare theirj jurisdiction-specific annexes. Since special purpose districts operate differently from incorporated municipalities, separate templates were created fort thet two types ofjurisdictions. Thei templates were created: SO that all criteria of Section 201.6 of44 CFR would be met, based on the partners' capabilities and mode ofc operation. Templates available for the planning partners' use were specific as to whether the partner's annex is an update to aj previous hazard mitigation plan or a first-time hazard mitigation plan. Each partner was asked toj participate in a technical assistance workshop during which key elements oft thet template were discussed and subsequently completed by a designated point of contact for each partner and a member oft the planning team. The templates were set upt to lead each partner through a series of steps that would generate the DMA-required elements that are specific for each partner. Thei templates and their  instructions can bei found: in Appendix Ct to this volume.  Workshop  Workshops were held: for Planning Partners to address the following topics:  DMA Local plan background Mitigation defined Local plan guiding principle, goals and objectives Thei templates and the tool kit Risk ranking Developingyour action plan Cost/benefit: review Prioritization protocol Next steps.  Four sessions were held, two each on. June 7, 2017 and. June 14, 2017, to ensure that representatives from all planning partners would be ablet to attend. The sessions provided technical assistance and an overview ofthe template completion process. Attendance at this workshop was mandatory under the planning partner expectations established by the Steering Committee, There was 90-percent attendance oft the partnership at these sessions. Int the risk-ranking exercise, each planning partner was asked to review the ranked risk specifically for its jurisdiction, based on thei impact on its population and/or facilities. Municipalities based this ranking on probability of occurrence and thej potential impact onj people, property and the economy. Special purpose districts based this ranking on probability of occurrence and thej potential impact on their constituency, their vital facilities and the facilities' functionality after an event. The methodology followed that used for the countywide risk ranking presented in Volume 1. The objectives oft this exercise were to familiarize the partnership with how to use thei risk assessment as a tool to support other planning and hazard mitigation processes and to help prioritize types ofmitigation actions that should be considered. Hazards that were ranked as "high" for eachj jurisdiction: asa result ofthis exercise were considered to be priorities fori identifying appropriate mitigation actions, although jurisdictions also identified actions to mitigate "medium" or "low" ranked hazards as appropriate.  TETRA TECH  xvii    Contra Costa County Hazard Mitigation Plan; Volume 2--Planning Partner Annexes  Tool Kit  Bach planning partner was provided with at tool kit to assist in completing the annex template and developing an action plan. The tool kits, which were used during the workshops and in follow-up work conducted by the  planning partners, contained thei following:  The 2011 Contra Costa County Hazard Mitigation Plan and Association of Bay Area Governments Plan  Ac catalog ofmitigation best practices  The guiding principle, goals and objectives developed for the update toi the plan Information on thel FEMA Hazard Mitigation. Assistance grant program Information on past hazard events that have impacted the planning area County-wide andj jurisdiction-specific. maps for hazards of concern Thei risk assessment results developed: for this plan Information on climate change and expected impacts in the planning area Jurisdiction-specific annex templates, with instructions for completing them FEMA guidance on plan integration The results oft thej public survey conducted as part of the public involvement strategy Acopy oft the presentation that was given at the workshop sessions.  Special district boundary maps showing the sphere ofinfluencei for each: special purpose district partner  A large portion of the workshop focused on how thet tool kits should be used to develop the mitigation action plan. Planning partners were specifically asked to review the following to assist in thei identification ofactions:  The. Jurisdiction's Capability Assessment- -Reviewed to identify capabilities that thej jurisdiction does 'not currently have but should consider pursuing or capabilities that should be revisited and updated to include best available information; also reviewed to determine! how existing capabilities can be leveraged The. Jurisdiction's) National Flood Insurance! Program Compliance Table-F Reviewed to identify The. Jurisdiction's] Review of Its. Adaptive Capacity for Climate Change-Reviewedr toi identify ways toleverage or continue to improve existing capacities and to improve understanding of other capacities. The. Jurisdiction's Identified Opportunities forl Future Integration-Reviowed toi identify specific Jurisdiction-Specific Vulnerabilities-F Reviewed toi identify actions that willl help reduce known Thel Mitigation Best Practices Catalog Reviewed toi identify actions that thej jurisdiction should Public Input-Reviewedi to identify potential actions and community priorities.  toi increase or improve hazard mitigation in the jurisdiction. opportunities to increase floodplain management capabilities. integration actions to bei included in the mitigation strategy.  vulnerabilities.  consideri including in its action plan.  Prioritization  44 CFR requires actions identified in the action plan to be prioritized (Section 201.c.3.i). The planning team and steering committee developed ai methodology for prioritizing the action plans that meets the needs of the partnership and the requirements of4 44 CFR. Alli identified actions were prioritized in two categories-  implementation and grant pursuit-as defined by the following criteria:  Implementation priority  High) Priority- -Action meets multiple objectives, has benefits that exceed cost, has funding secured ori is an ongoing project, and meets eligibility requirements for a grant program. High-priority actions  xviii  TETRA TECH    Introduction  can be completed in the short term (1 to 5 years). Thel key factors for high-priority initiatives are that Medium Priority- -Action meets multiple objectives, has benefits that exceed costs, and does not have funding secured buti is eligible for funding. Action can be completed int the short term, once fundingi is secured. Medium-priority actions will become high-priority actions once fundingi is secured. The key factors for medium-priority actions are that they are eligible for funding but dor not yet have funding secured, and that they can be completed int the short term. Low Priority- -Action: mitigates the risk ofal hazard, has benefits that do not exceed the costs or are difficult to quantify, does not have funding secured andi is not eligible for grant funding, and has a long-term timeline for completion (1 to 10 years). Low-priority initiatives may be eligible for grant  they have funding secured and can be completed int the short term,  funding from programs that have not yet beeni identified.  Grant pursuit priority  High) Priority- Action meets grant eligibility requirements, has high benefits, and is listed as high or medium priority. Local funding options are unavailable or available local funds fort the action could Medium Priority- -Action meets grant eligibility requirements, has medium or low benefits, is listed Low) Priority- Action does not meet grant eligibility requirements or has low benefits.  instead be used for projects that are not eligible for grant funding. asi medium orl low priority. Local funding options are unavailable.  These priority definitions are dynamic and can change from one category to another based on changes toa parameter such as availability offunding. For example, aj project might be assigned al medium priority because of the uncertainty ofai funding source, but be changed tol high priority once ai funding sourcel has been identified. The prioritization schedule for this plan will bei reviewed and updated as needed annually through the plan  maintenance strategy. Benefit/Cost Review  44 CFR requires the prioritization oft the action plan to emphasize al benefit/cost analysis oft the proposed actions. Because some actions may not bei implemented: for upt to 10 years, benefit/cost analysis was qualitative and not of the detail required by FEMA for project grant eligibility under the Hazard Mitigation. Assistance (HMA) grant program. A review oft the apparent benefits versus the apparent cost of each project was performed. Parameters were established for assigning subjective ratings (high, medium, and low) to benefits and costs as follows:  Benefit ratings: property.  High-The action willl have an immediate impact on the reduction ofr risk exposure to life and Medium-The action willl have a long-term impact on the reduction ofr risk exposure to life and property or will provide an immediate reduction ini the risk exposure to property. Low--Long-term benefits oft the action are difficult to quantify int the short term.  Cost ratings:  High--Bxisting funding levels are not adequate to cover the costs oft the proposed action; implementation would require ani increase in revenue through an alternative source (for example, Medium-The action could be implemented with existing funding but would require a re- apportionment oft the budget or al budget amendment, or the cost of the action would have to be spread  bonds, grants, and fee increases). over multiple years.  TETRA TECH  xix    Contra Costa County Hazard Mitigation Plan; Volume 2--Planning PartnerA Annexes  Low--The action could bei funded under the existing budget. The action is part of or can be part ofa an  existing, ongoing program.  Using this approach, projects with positive benefit versus cost ratios (such as high over high, high over medium, For many oft the strategies identified int this action plan, funding might be sought under FEMA's HMA program. This program requires detailed benefit/cost analysis as part oft the application process. These analyses will be performed on projects at thet time ofa application preparation. Thel FEMA benefit-cost model will be used to perform this review. For projects not seeking financial assistance from grant programs that require this sort of analysis, the Partners reserve the right to define "benefits" according to parameters that meet their needs and the  medium over low, etc.) are considered cost-beneficial and are prioritized accordingly.  goals and objeçtives oft this plan. Analysis of Mitigation Actions  All planning partners reviewed their recommended actions to classify each action based on the hazard it addresses and the type ofi mitigation iti involyes. Mitigation types used for this categorization are as follows:  Prevention-Covemmen, administrative or regulatory actions that influence the way land and buildings are developed to reduce hazard losses. Includes planning and zoning, floodplain laws, capital improvement programs, open space preservation, and stormwater: management regulations. Property Protetion-Modifieation ofbuildings or structures to protect them from al hazard or removal ofstructures from al hazard area. Includes acquisition, elevation, relocation, structural retrofit, storm Public Education and Awareness--Actions to inform citizens and elected officials about hazards and ways to mitigate them. Includes outreach projects, real estate disclosure, hazard information centers, and Natural Resource: Protection-Actions: that minimize hazard loss andj preserve or restore thei functions ofnatural systems. Includes sediment and erosion control, stream corridor restoration, watershed. management, forest and vegetation management, and wetland restoration and preservation. Emergency Seryices--Actions that protect people and property during and immediately after al hazard event. Includes warning systems, emergency response services, and the protection of essential facilities. Structural Projects--Actions that involve the construction ofs structures to reduce the impact ofal hazard. Climate Resilient- --Actions that incorporate methods to mitigate and/or adapt to the impacts of climate change. Includes aquifer storage andi recovery activities, incorporating future-conditions projections in project design or planning, or actions that specifically address jurisdiction-specific climate change risks, Community Capacity Building--Actions that increase or enhance local capabilities to adjust to potential damage, to take advantage ofopportunities, or to respond to consequences. Includes staff training, memorandums ofu understanding, development of plans and studies, and monitoring programs. These categories include categories identified in the Community Rating System (CRS) 2017 CRS Coordinators Manual (OMBI No. 1660-0022, Figure 510-4). The CRS categories expand on the four categories in FEMA's 2013 Local Mitigation. Handbook. They provide a1 more comprehensive range of options, thus increasing integration opportunities. The use of CRS guidance enhances the CRS credit potential fort this plan, for the benefit Ins addition tot the CRS categories, two other categories were included in the analysis. The climate resilient category was added to facilitate thei incorporation of climate adaptation planning into hazard mitigation plans in  shutters, and: shatter-resistant glass. school-age and adult education.  Includes dams, setback levees, floodwalls, retaining walls, and: safe rooms.  such as sea level rise or urban heat island effect.  of planning partners who participate in the CRS program.  XX  TETRA TECH    Introduction  accordance with California Senate Bill 379 (see Section 4 in Volume 1 ofthis plan). Community capacity building was added to clearly identify opportunities for expanding on existing capabilities. COMPATIBILITY WITH PREVIOUS APPROVED PLANS  Oft the 48 initially identified potential planning partners, 37 were covered by prior plans approved by) FEMA, with more than 500 cumulative mitigation actions identified in their plans. Oft these, seven were covered under a 2010 planning effort by ABAG, and thel balance were covered under the 2011 Contra Costa County Hazard Mitigation Plan. Table 11 lists allt thei initial partners and the role this multi-jurisdictional plan will playi in achieving  compliance and the CRS status, ifs applicable. FINAL COVERAGE UNDER THE PLAN  Oft the 39 planning partners that submitted letters ofintent toj participate, 35 fully met the participation requirements specified by the Steering Committee. The principal requirement not met by the other partners was completion oft thej jurisdictional annex template following the workshops. Only the 35 partners that submitted completed templates arei included int this volume and will seek DMA compliance under this plan. The remaining jurisdictions will need tof follow thel linkage procedures described in Appendix B ofthis volume. Table 2 lists the  jurisdictions that submitted letters ofintent and their ultimate status ini this plan.  TETRA TECH  xxi    Contra Costa County Hazardi Mitigation Plan; Volume 2-Planning Partner Annexes  Table 1. Prior Plan Status FEMA Date 6/28/2011 11/27/2012 Nota available 3/13/2012a 7/19/2011 11/8/2011 2/2/7/2012a 9/21/2011 1/11/2012a 9/6/2011a 9/20/2011 7/6/2012 11/1/2011 2/6/2012a 6/28/2011 9/20/2011 8/10/2011 7/21/2011 Nota available Not available 6/27/2012 2/14/2012 6/28/2011 8/17/2011 N/A 5/18/2011a 8/4/2011 Not available 10/12/2011 Not available Not available 10/3/2011 2/7/2012 1/11/2012 7/14/2011  Will Be Covered by this Multi- Jurisdictional Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes No Yes Yes Yes Yes Yes No No Yes Yes Yes Yes  Mult-Jurisdictional Hazard Mitigation PlanWill Become Yes No No Yes No No No No No No No Yes No Yes Yes Yes N/A N/A N/A N/A N/A NIA NIA N/A N/A N/A N/A N/A N/A N/A N/A N/A NIA NIA N/A N/A  CRS Yes No No Yes No No No No No No No Yes No Yes Yes Yes N/A N/A N/A N/A N/A NIA N/A NIA N/A NIA N/A NIA N/A N/A N/A N/A NIA NIA NIA N/A  Approval Hazard Mitigation Community CRS Plan of  Plan? (Yes/No) (Yes/No) Record?fYes/NO)  Contra Costa County City of Antioch City of Brentwood City of Concord Town of Danville City of EI Cerrito City ofL Lafayette City of Martinez Town of Moraga City of Orinda City of Pinole City of Pleasant Hill City of Richmond City of San Pablo City of San Ramon City of Walnut Creek Antioch Unified School District Bethel Island Municipal Improvement District Brentwood Union School District Canyon Elementary School District Contra Costa Community College District Contra Costa County Firel Protection District Contra Costal Flood Control and Water Conservation District Contra Costa County Office of Education Contra Costa County Sheriff's Search and Rescue Contra Costa Water District Central Contra Costa Sanitary District Crockett Community Services District Deltal Diablo Diablo Water District Dublin San Ramon Services District East Contra Costa Fire Protection District Transit) Ironhouse Sanitary District Kensington Firel Protection District Kensington Police Protection and Community Service District  Eastern Contra Costa Transit Authority (Tril Delta Nota available  xxii  TETRA TECH    Introduction  Will Be Covered by this Multi- Jurisdictional No No No Yes No Yes No Yes Yes Yes No Yes  Mult-Jurisdictional Hazard Mitigation Plan Will Become N/A NIA N/A N/A: NIA N/A N/A N/A NIA NIA N/A N/A  FEMA Date 5/19/2011 9/14/2011 Not available 7/13/2011 10/4/2011 1/13/2012 8/24/2011 Nota available 3/28/2012 Nota available 9/19/2011 9/21/2011  CRS N/A NIA N/A NIA N/A N/A N/A N/A N/A N/A N/A N/A  Approval Hazard Mitigation Community CRS Plan of  Plan?(Yes/No) (Yes/No) Record?(Yes/No)  Knightsen Community Services District Liberty Union High School District Mount Diablo Unified School District Pleasant Hill Recreation and Park District Reclamation District 800 (Byron Tract) Reclamation District 830 (Jersey Island) Rodeo-Hercules Firel Protection District San Ramon Geological Hazard Abatement San Ramon' Valley Fire Protection District San Ramon Valley Unified School District Walnut Creek School District West Contra Costal Unified School District not available.  District  a. Jurisdiction covered under 2010 ABAG Local Hazard Mitigation Plan. Datel listed indicates date of adoption; FEMA approval datei is  TETRA TECH  xxili    Contra Costa County Hazard Mitigation Plan; Volume 2--Planning Partner Annexes  Table 2. Planning Partner Status  Letter of Attended Completed Covered by Intent Date Workshop? Template? This Plan?  Municipalities City of Antioch City of Brentwood City of Concord Town of Danville City of EI Cerrito City ofL Lafayette City of Martinez Town of Moraga City of Orinda City of Pleasant Hill City of Richmond City of San Pablo City of San Ramon City of Walnut Creek Contra Costa County Fire Districts Contra Costa County Fire Protection District Kensington Fire Protection District Moraga-Orinda Fire Protection District Rodeo-Hercules Fire Protection District San Ramon Valley Fire Protection District School Districts Antioch Unified School District Contra Costa County Office of Education San Ramon' Valley Unified School District West Contra Costa Unified School District Water, Sewer and Utility Districts Central Contra Costa County Sanitary District Contra Costal Water District Delta Diablo Diablo Water District Dublin San Ramon Services Districtb Ironhouse Sanitary District Other Districts Bethel Island Municipal Improvement District Contra Costa County Flood Control and Water Conservation District 2/11/2016 Crockett Community Services District Eastern Contra Costa County Transit Authority Kensington Police Protection and Community Services District Pleasant Hill Recreation and Park District Reclamation District 800 Reclamation District 830 San Ramon Geological Hazard Abatement District  1/21/2016 1/11/2016 1/14/2016 12/8/2015 11/10/2016 2/9/2017 11/10/2016 1/13/2016 2/8/2017 1/27/16 2/8/2016 1/20/2016 1/29/2016 11/10/2016 1/25/2016 11/10/2016 11/16/2016 1/27/2016 11/10/2016 1/26/2016 1/14/2016 1/29/2016 12/20/2016 1/26/2016 1/12/2016 12/2/2016 1/18/2016 1/15/2016 2/22/2016 12/16/2015 1/27/2016 11/22/2016 12/7/2015 1/29/2016 1/11/2016 1/14/2016 12/16/2015 11/10/2016  Yes Yes Yes Yes Yes Yes Yes Yes Yes Noa. Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No Yes Yes  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No Yes Yes  Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes No Yes Yes  a. Duet tos staffing shortages and vacation schedules, a representative fromt the City of Pleasant Hill was unable to attendt the workshops. Dublin San Ramon Services Districts suspended participation int this planning effort after the Tri-Valley Planning Partnership was formed. A greater portion oft the District's service areal lies within the planning areai for the Tri-Valley effort.  One-on-one assistance was provided by a member oft thep planning team.  xxiv  TETRA TECH    F  to  5  k    LO Lo    #  +  LO 0  F  B    +  Lo 1  a  B    2. CITY OF ANTIOCH  2.1 HAZARD MITIGATION PLAN POINT OF CONTACT  Primary Point of Contact Lynne Filson Assistant City Engineer II 200 H Street Antioch, CA 94509 Telephone: 925-779-7025 e-mail Address: nison@eiantiochca.us 2.2 JURISDICTION PROFILE  Alternate Point of Contact Julie Haas-Wajdowicz Environmental Resource Coordinator 2001 H Street Antioch, CA 94509 Telephone: 925-779-7097  e-mail Address: haasvajdowicz@cl.antioch.ca.us  The following is a summary of! keyi information about thej jurisdiction andi its history:  Date of Incorporation-Febnumy 6, 1872  Current Population--114241 as of. January 1,2017 (California Department of Finance, 2017) Population Growth- Based upon U.S. Census and California Department of Finance data, City of Antioch's population growth rates have slowed significantly since the 2000-2010 Census. Overall population growth in that decade was 13.1 percent. From 20101 to 2017, however, growth slowed to 0.11 percent, and between. January 1,2016 and. January 1, 2017 the annual increase was 0.71 percent. Location and Description- -Antioch is a city in the East Bay region oft the San Francisco Bay area at the confluence oft the Sacramento and San. Joaquin Rivers, at the gateway to the agriculturally rich San Joaquin Delta. The city is slightly more than 501 miles east of San Francisco and 55 miles southwest of Sacramento (at 38°00'N, 121°48'21"w). The Cityl has at total area of28.16: square miles. Antioch is home to 31 parks covering 310 acres, with an additional 600 acres of City-owned open space. Itl has 11 miles ofy walking paths connecting communities to parks ands schools. Within its boundaries, Antioch has Contra Loma Regional Park, the Antioch/Oakley Regional Shoreline and a portion ofthe Black Diamond Mines Regional Park, and thel Mokelumne Coast to Crest Trail and Delta De Anza - Regional Trail. These three parks cover 6,493 acres; approximately 38 percent of Antioch's total area. Just outside. Antioch's city limit is the 2,024-acre Round Valley Regional Preserve. In addition, established in 1980, the Antioch Dunes National Wildlife Refuge was thei first national wildlife refuge in the country established for the purpose of protecting endangered plants andi insects. Iti is located ont the Brief History- -In 1849, the town was founded by brothers William and. Joseph Smith, who named the town Smith's Landing. On February 5, 1850, Joseph Smith died of malaria and his brother moved to a higher ground overlooking the river. On. July 4, 1851, William Smith held aj picnic for thet town residents on1 thel bluffr near hisl home. They discussed naming the community and Smith: finally suggested the biblical name of Antioch, at town in Syria where the Christians were first named. Antioch was the name chosen and dedicated toi the memory of. Joseph. Around 1859, coal was discovered int thel hills south of  south shore oft the San. Joaquin River in Antioch.  TETRA TECH  2-1    Contra Costa County Hazard Mitigation Plan; Volume 2--Planning Partner Annexes  Antioch, and coal mining formed the first substantial business ini the area apart from farming and dairying. In 1872, Antioch incorporated as a General Law city. Thet town continued toj prosper into the 1900s, becoming a "blue collar" factory community also supporting ai fishing and commercial boating industry. In the latter part of the 1900s, as the factories began to close or move elsewhere, Antioch began to take on ai new look. Today, Antioch is mainly a "bedroom", community, with most adults working in central Contra Costa County and larger cities toward Oakland and San Francisco. The City has seen an enormous amount ofg growth int thel last 25 years as the population oft the greater Bay Area grew. The City will continue to grow as real estate prices force families to move toward the suburbs. Climate-The climate is mild, with annual temperatures ranging between al high of 96°F and al low of 34°F. Humidity levels are generally low and the City's riverfront location often provides cooling breezes. Annual rainfall isj just over 15.41 inches, the majority of which falls between October and May. Average Governing Body Format-The City of Antioch has a Council/Manager form of government. Policy making and legislative authority is vested in a five-member City Council consisting ofa Mayor and four Council Members. The four Council Members are elected to: four-year overlapping terms. The Mayori is directly elected to ai four-year term. The City Council assumes responsibility for adoption oft this plan, and The City Council presides over and adopts the City'sa annual budget and financial affairs; appoints commissions and committees; and hires and supervises the City Manager and City Attorney. City Council members are directly responsible for service to the citizens, businesses and policies oft the City. The City Manager advises City Council; supervises personnel and all City departments; enforces ordinances and programs approved by City Council; and, oversees day-to-day city government operations.  annual snowfall is essentially zero.  the City Manager will oversee its implementation.  2.3 DEVELOPMENT TRENDS  Over the last few years, the City of Antioch has been recovering from the crash oft thel housing market and the greati recession. Thej pace ofr residential development in the Bay Area and the State has continued to show consistent positive growth, with generally positive results for local economies reliant on housing construction. Antioch's economy has not seen thes same level of growth from the housing market increase as some of our neighboring communities. Thei focus of development: since 2003 has been primarily commercial development. The new office, commercial and flex-space developments have created the opportunity for well over 5,000 new jobs within the City, Over time new. jobs will lead to growth in the local economy. The recent Northeast Annexation ofs some-750 acres has created the opportunity for waterfront development for the properties that front the San. Joaquin River. Thej property is mixed-use commercial, industrial, retail and residential. A rise in the housing market and a significantly better economy have contributed to economic expansion and vitality. Even withi thei improved economy, Antioch has suffered from a low number of sworn police officers. In November 2013, the community passed Measure C, a! % cent sales taxi increase, which the City Council dedicated 100 percent to increasing our Police Department and Code Enforcement budgets. This prioritization of public safety and health enabled the Cityt tol hire more police officers and code enforcement staff. The results have been a decrease in the crime rate; reduced response times; and, increases in code enforcement and cleanup activities. In 2014, the community passed Measure O1 to ensure that residential landlords paid a fair business license tax. This revenue has been used to improve City hours of operation and reduce the City's budget deficit. In: spite ofi increased revenues, the City maintains ai focus on continuing to find ways toi improve efficiency, seek newi ideas fors savings and revenue generation, and continue with economic development. Ofs significant community and economic value to Antioch are recent completion oft the widening State Highway 4 from Loveridge Road tol Hillcrest Avenue; completion ofthe Highway 4/Highway 160 interchange; and, the soon  2-2  TETRA TECH    2. City ofA Antioch  tob be completed Hillcrest eBART: station, which will connect Antioch and East Contra Costa County with the Pittsburg/Bay Point BART Station. The recently completed. Antioch Community Center at thel Prewett Family Park has been a well-received amenity for the community and southeast Antioch. The City Council has other projects and plans that will enrich the City and make Antioch an even better place tol live, work and play. In striving to continue positive "development trends," the following projects will be of focus: Complete the Downtown Specific Plan to revitalize the Rivertown area, Bring a well-established restaurant tot the Antioch Marina. Revitalize the Amtrak station and surrounding area. Establish a water transit system. Protect the City's water rights from state proposals. Initiate long-term infrastructure planning. Seek grants as possible alternative funding for City projects.  Remain committed to construction ofai full-scale library facility at Prewett Park.  Table 2-1 summarizes development trends int the performance period since development oft the previous hazard  mitigation plan and expected future development trends. Has your) jurisdiction annexed any land since the development oft the previous hazard mitigation plan? number of parcels ors structures. Isy your jurisdiction expected to annex any areas during the performance period of this plan? Are any areas targeted for development or major redevelopment int the next fivey years? Ifyes, pleasel briefly describe  Table 2-1. Recent and Expected Future Development Trends  Criterion  Response Yes  Ifyes, givet the estimated area annexed and estimated Approximately 759 acres ofr mixed-use county unincorporated real  properly has recently! been annexed tot the City of Antioch. Planning isi in its earliest stagesf for this new property. Approximâtely 144 parcel.  No Yes  Sand Creek Focus Area-2783 Acres, 4000 Residential Units East Lone Tree Area--approx. 800/ Acres, 241.3 Acres residential, 98.3 Employment, 113.2/ Acres Retail, 11.3 Acres School, 10.7 Public Faciities, remaining acreage parks, opens space, roads Hillcrest Station Area-Transit Oriented Development, Mixed Use- - Portions oft these areas are ink known hazard areas. Development will  Max 2,500 residential units mitigate or avoid! hazard areas. Multi-Family Other (commercial, mixed use, etc.)  How many building permits for new construction were issued inj your) jurisdiction since the development oft the Single Family previous hazard mitigation plan?  2012 2013 2014 2015 2016 263 240 83 68 42 0 0 0 0 1a 2 2 4  7 2  Please provide the number of permits for each hazard area e Special Flood Hazard Areas: 0  or provide a qualitative description of where development le Landslide: 20 Landslide vulnerabilityi is described as" scattered small  has occurred.  landslides" and's slide locations are mapped inl locations with primarily veryl low development. All development required to'h have as soils report  andi mitigate hazard, High Liquefaction. Areas:0 Dam Failurel Inundation Area: 1a Wildfire Risk Areas: 0  a. One permitf for two buildings for at total of 85 apartments  TETRA TECH  2-3    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning! Partner Annexes  2.4 CAPABILITY ASSESSMENT  The City of Antioch performed an inventory and analysis of existing capabilities, plans, programs and policies that enhance its ability to implement mitigation strategies. Thei introduction at thel beginning of this volume ofthe hazard mitigation plan describes the components included in the capability assessment and their significance for hazard mitigation planning. This section summarizes the following findings oft the assessment: An assessment ofl legal and regulatory capabilities is presented in' Table2 2-2. Development and permitting capabilities are presented in Table 2-3. Ana assessment of fiscal capabilities is presented in' Table 2-4. Ana assessment of administrative and technical capabilities is presented in Table 2-5. Ans assessment of education and outreach capabilities is presented in Table 2-6. Information on National Flood Insurance Program (NFIP) compliance is presented in Table2-7. Classifications under various community mitigation programs are presented in Table 2- 8. The community's adaptive capacity for thei impacts of climate change is presented in Table 2- 9.  Table 2-2. Legal and Regulatory Capability  Other Jurisdiction Authority No No No No No Yes No No Yes No Yes Yes N/A:  Integration Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes N/A  Local Authority Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes N/A  State Mandated Opportunity?  Codes, Ordinances, &F Requirements Building Code Zoning Code Subdivisions Comment: Ord. 275-C-S, passed 3-11-75 Stormwater Management Comment: Ord. 1035-C-S, passed 9-12-04 Post-Disaster Recovery Real Estate Disclosure Growth Management Site Plan Review Environmental Protection Comment: California Environmental Qualily Act Flood Damage Prevention Emergency Management Climate Change Other: Comment: None identified  Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Yes N/A  Comment: 2016 California Building Code and Local Amendments Am. Ord, 2122 C-S and 2123 C-s, passed 1-10-17  Comment: Ord. 897-C-S, passed 10-25-94; latest Am Ord.2121 C-S, passes 1-10-17  Comment: (66Code, $4-2.08) (Ord. 222-C-S, passed 7-26-73; Am. Ord. 911-C-S, passed 9-12-95)  Comment: Ca. State Civil Code 11021 requires full disclosure onr natural hazard exposure oft the sale/re-sale of any and alli real property Comment: Transportation Systems Management. Measure C Growth Management Program Ord. 932-C-S, passed 12-9-97; Cal. Gov. Comment: Adopted with Zoning Ordinance Ord. 897-C-S, passed 10-25-94; Am. Ord. 2023-C-S, passed 4-14-09  Code $65300 et seq,  Comment: Floodplain Management Ord. 708-C-S, passed 5-12-88. Am. Ord. 2025-C-S, passed 5-12-09  Comment: Ord. 222-C-S, passed 7-26-73; Disaster Council  Comment: SB-379: Land Use: General Plan: Safety Element, no Antioch specific climate change related codes  2-4  TETRA TECH    2.Cityo ofAntioch Integration Yes Yes Yes No Yes Yes No Yes No No Yes Yes No Yes Yes No N/A  Other Jurisdiction Authority No No Yes No No No No No No No No Yes No No No Yes N/A  Local Authority Yes Yes Yes No Yes No No Yes No No Yes Yes No Yes No No N/A  State Mandated Opportunity?  Planning Documents General Plan  Yes Yes No No Yes No No No No No No Yes No No No No N/A  Is the plan compliant with Assembly Bill2 2140? No Comment: Adopted November 24, 2003 Capital Improvement Plan Comment: Antioch Capital Improvement Plan Floodplain or Watershed Plan Stormwater Plan Comment: None identified Urban Water Management Plan Comment: UWMP2015 Habitat Conservation Plan Economic Development Plan Comment: The City does not! have and Economic Development Plan Shoreline Management Plan Comment: Adopted with the General Plan November 24, 2003 Community Wildfire Protection Plan Comment: None identified Forest Management Plan Comment: None identified Climate Action Plan  How often is they plan updated? CIPisa a 5-year program updated annually witha a 2-year budget Comment: Contra Costa County Flood Control and Water Conservation District  Comment: Currently being developed byt the City ofAntioch Community Development Department  Comment: CAPS adopted by Resolution 2001/39 Comprehensive Emergency Management Plan the Director of Emergency Services Threat & Hazard dentification & Risk Assessment (THIRA) Comment: None identified Post-Disaster Recovery Plan Continuity of Operations Plan Comment: None identified Public Health Plan Other: Comment: None identified  Comment: The Emergency Management. Plani is currently being updated byt the City Manager (appointed in/ April 2017) whoi is, by Code,  Comment: The Emergency Management Plani is currently being updated byt the City Manager (appointed in April 2017) whoi is, by Code,  the Director of Emergency Services  Comment: Public Health provided by Contra Costa County.  TETRA TECH  2-5    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning Partner Annexes  Table 2-3. Development and Permitting Capability  Criterion  Response Yes Community DevelopmentBulding No, permits byh hazard areas were determined by comparing hazard areas with locations ofr new development Ther majorily oft the! buildable land can bei found in Southeast Antioch andi isr referred to as the Sand Creek Focus Area. There are additional buildable landsi int the Eastl Lone Tree Specific Plan Area andt those lands involvei infilla ands somep parcels int thel Northeast.  Does your jurisdictioni issue development permits? Ifno, who does?1 Ify yes, which department? Does yourj jurisdiction havet the ability to track permits by Does your) jurisdiction have al buildable lands inventory? Ifyes, please briefly describe.  hazard area?  Yes  Ifno, please quantitatively describe the level of buildouti in  NIA  thej jurisdiction.  Table 2-4. Fiscal Capability  Financial Resource Community Development Block Grants Capital Improvements Project Funding Authority tol Levy Taxes for Specific Purposes User Fees for Water, Sewer, Gas or Electric Service Incur Debtt through General Obligation Bonds Incur Debt through Special Tax Bonds Incur Debt throughl Private Activity Bonds Withhold Public Expenditures in Hazard-Prone Areas State-Sponsored Grant Programs Development Impact Fees for Homebuyers or Developers  Accessible or Eligible to Use?  Yes Yes Yes Yes, for Water and Sewer Yes Yes No No Yes Yes Yes  Other  Table 2-5. Administrative and Technical Capability  Staff/Personnel Resource Planners ore engineers with knowledge of land development and landi management practices Engineers orp professionals trained in building or infrastructure construction practices Planners ore engineers with an understanding of natural hazards Staffy with training in! benefit/cost analysis Surveyors Personnel skilled ort trained in GIS applications Scientist familiar with natural hazards in local area No Emergency Manager Grant writers Other  Available? Yes Yes Yes No No Yes No No  aparmerVApersyireston Community Development & Public! Works Departments/staff Community Development & Public Works Departments/staf Community Development & Public Works Departments/staf Community Development & Public Works Departments/staff Yes City! Manager and Police Lieutenant/Office ofE Emergency Services City Manager, Community Development & Public Works  (OES) Coordinator Departments/staff  2-6  TETRA TECH    2.Cily ofA Antioch  Table 2-6. Education and Outreach Capability  Criterion  Response No No Yes  Do youl have al Public Information Officer or Communications Office? Doy you! have personnel skilled or trained in website development? Do youl havel hazard mitigation information available on your website?  Ifyes, please briefly describe.  AC Citizen Guide to! Disaster Preparedness includes creating a disaster plan, planning! how at family will stay in contacti ifs separated bya a disaster, references to other websites, emergency planning for children, emergency planning forp people with special needs, creating a medicale emergency information list, how to turn off utilities, whats should bei in a disaster supply kit, emergency preparedness checklist, ando disaster Departments have very recently created individual Facebook accounts. Police and Public Works can provide disaster related safety items The Planning Commission acts onl land use issues which regulate development in hazard prone areas.  preparedness for pets. No Yes No N/A Yes  Do you utilize social mediaf for hazard mitigation education and outreach? Do you! have any citizen boards or commissions that address issues related Doy you have any other programs already in place that could be used to Doy you have any established warning systems for hazard events?  Ifyes, please briefly describe. tol hazard mitigation? Ifyes, please briefly describe. communicate hazard-related information? Ifyes, please briefly describe. Ifyes, please briefly describe.  The Emergency Internet Notification System (EINS)is as system for informing Antioch residents ofs significant emergency events impacting the entire City. Ifan events such as al large earthquake occurs, causing considerable damage tol buildings and! highways, the intent would! bet to send ane email to all persons who haves subscribed to EINS. Thee email would tell residents what has occurred andi ift there are actions residents shouldt take.  TETRA' TECH  2-7    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning Partner Annexes  Table 2-7. National Flood Insurance Program Compliance  Criterion  Response Public Works Assistant City Engineer No May 12, 2009 Meets NIA Unknown No N/A N/A Yes Duet tor recentr retirements, need! basic training on all aspects off floodplain management. No N/A Possibly 127 $38,300,800 $133,360 59 13/0 $1,400,712  What local department is responsible for floodplain management? Who is your floodplain administrator? departmentipositon) Are any certified floodplain managers on staffi in your) jurisdiction? Whati is the date thaty yourf flood damage prevention ordinance was last amended? Does your floodplain management program meet ore exceed minimum requirements? When was the most recent Community Assistance Visit or Community Assistance Does your) jurisdiction have any outstanding NFIP compliance violations that need to  Am. Ord 2025-C-S Ifexceeds, in what ways? Contact? bea addressed? Ifso, please state what they are. lfno, please state why. floodplain management program? Ifso, what type of assistance/training is needed?  Do yourf flood hazardi maps adequately address the floodi risk within your) jurisdiction? Yes, although may request update  Does yourf floodplain management staff need any assistance or training tos support its  Does your) jurisdiction participate int the Community Rating System (CRS)? Ifyes, is your jurisdiction interestedi ini improving CRS Classification? Is) yourj jurisdiction interested inj joining the CRS program? Howr many Flood Insurance policies are in force inj your jurisdiction?a Whati is the insurance inf force? Whati is the premium in force? Howr many totall loss claims have been filedi iny yourj jurisdiction?a How many claims were closed without paymentlare still open? What were the total payments for losses? a. According tol FEMA: statistics as of December 31,2 2016  Table 2-8. Community Classifications  Participating? Classification  Date Classified N/A NIA N/A NIA N/A  Community Rating System Building Code Effectiveness Grading Schedule Public Protection Storm Ready Firewise  No No No No No  N/A N/A N/A N/A N/A  2-8  TETRA TECH    2.City ofA Antioch Jurisdiction Ratinga Low Low Low Medium Low Medium Low Medium Low Low Low Low Low Low Low Low Low Low:  Table 2-9. Adaptive Capacity for Climate Change  Criterion Technical Capacity  Jurisdiction-level understanding of potential climate change impacts Comments/Additional. Information: Seal levelr rise study isi needed for Antioch Shoreline Jurisdiction-level monitoring of climate change impacts Comments/Addltional. Information: Currently not occurring, studies and projections are needed for this region Technical resources to assess proposed strategies for feasibility and externalities Comments/Additional Information: Some tools available through ICLEII membership Jurisdiction-level capacity for development of greenhouse gas emissions inventory Comments/Additional. Information: GHG inventories every 5 years Capital planning andl land use decisions informed by potential climate impacts Comments/Adaltonal. Information: None provided Participation ini regional groups addressing climate risks  Comments/Addltlional. Information: Contra Costa Climate Leaders, County Sustainability Exchange Cleara authortylmandate to consider climate change impacts during public decision-making: processes  Implementation Capacity  Comments/Adaltional Information: None provided Identified strategies for greenhouse gas mitigation efforts Comments/Addltional. Information: See Climate Actions Plans Identified strategies for adaptation toi impacts Comments/Addltiona Information: Studyn needed Champions for climate action in local government departments Comments/Addltional. Information: Environmental Resource Coordinator Political support for implementing climate change adaptation strategies Comments/Additional. Information: None provided Financial resources devoted to climate change adaptation Comments/Addltional Information: None provided Local authority over sectors likely tol be negative impacted Comments/Additional. Information: None provided Local residents knowledge of and understanding: of climate risk Comments/Adaitional. Information: None provided Local residents support of adaptation efforts Comments/Addltional. Information: None provided Local residents' capacity to adapt to climate impacts Comments/Additona, nformation: Unknown, survey isi needed. Local economy current capacity to adapt to climate impacts Comments/Additional. Information: Unknown, surveyl is needed Local ecosystems capacity to adapt to climate impacts Comments/Addltional Information: Unknown, studylsr needed,  Public Capacity  a. High = Capacity exists andi isi In use; Medium: = Capacity maye exist, buti ist not used or could use some improvement; Low= = Capacity does note exist or could use substantial improvement; Unsure= Note enough information is known to assign a rating. Note: Asr noted Int thel Final Synthesis Report oft the City of Antioch's March 2017 Resilience Dialogues, facilitated by GlobalChange.gov, (U.S. Global Change Research Program), "Antiochi isi interested ink building civic engagement byl linking climate resiliencet to community values andi integrating sea-level rise andi flooding projects into hazard mitigation planning."  TETRA' TECH  2-9    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning Partner Annexes 2.5 INTEGRATION WITH OTHER PLANNING INITIATIVES  The information on hazards, risk, vulnerability and mitigation contained int this hazard mitigation plan is based on the best available data. Plan integration is the incorporation ofthis information into other relevant planning mechanisms, such as general planning and capital facilities planning. It includes thei integration of natural hazard information and mitigation policies, principles and actions intol local planning mechanisms and vice versa. Additionally, plan integration is achieved though thei involvement ofl key staff and community officials in  collaboratively planning for hazard mitigation. 2.5.1 Existing Integration  In the performance period since adoption oft the previous hazard mitigation plan, the City of Antioch made progress oni integrating hazard mitigation goals, objectives and actions into other planning initiatives. The following plans and programs currently integrate components oft the hazard mitigation strategy: greenhouse gas emissions and discusses possible impacts of climate change.  Climate Action Plans, 2010- Highlights potential programs that could bei implemented to reduce Capital Improvement Plan- The Capital Improvement Plan includes projects that can help mitigate potential hazards. The City will actt to ensure consistency between thel hazard mitigation plan and the current and future capital improvement plans. Thel hazard mitigation plan may identify new possible funding sources for capital improvement projects and may result in modifications to proposed projects Resources listed in Section: 2.12 were used toj provide information for this annex on hazard events and local  based on results of the risk assessment.  capabilities within thej jurisdiction.  2.5.2 Opportunities for Future Integration  As this hazard mitigation plan is implemented, the City of Antioch will use information from the plan as the best available science and data on natural hazards. The capability assessment presented in this annex identifies codes, plans and programs that provide opportunities for integration. The area-wide and local action plans developed for this hazard mitigation plan in actions related toj plani integration, and progress ont these actions willl be reported through the progress reporting process described in Volume 1.1 New opportunities for integration also will be identified as part oft the annual progress report. The capability assessment identified the following plans and programs that do not currently integrate goals or recommendations oft the hazard mitigation plan but provide  opportunities to do soi int the future:  General Plan-The! Environmental Hazards Element contains an evaluation of natural and manmade conditions which may pose certain health and safety hazards to life and property in Antioch, along with a comprehensive program to mitigate those hazards. Inherent ini this Element is a determination of "acceptable risk." This determination is based on defining how safe is safe enough, balancing the severity oft thel hazard, costs and feasibility of hazard mitigation, and expected benefits. In most cases, the level of acceptable riski is widely shared throughout the State and nation. For example, the standard for protection from flooding is a national standard. Standards for protection ofs structures from earthquake damage are based on the provisions oft the Uniform Building Code. The Environmental Hazards Element addresses constraints to development from geologic and seismic conditions, noise, wildland fire, flooding and hazardous materials. Portions oft thel LHMP with the associated mapping will be considered fori inclusion intot the General Plan as an. Appendix and referenced int this Element. Also, update will include assuring  compliance with. AB 2140 and SB379.  2-10  TETRA TECH    2.Cilyo ofA Antioch  Urban Water Master Plan- Chapter 8 ofthe 2015UWMP describes the City's water shortage contingency plan (WSCP) for emergency preparedness and plans for a catastrophic event. Portions ofthe LHMP withi the associated: mapping will be considered: fori inclusion into the next UWMP. Zoning Code- Mitigation can be integrated into future zoning code updates to inform appropriate use of property within the City. Portions oft the LHMP with the associated: mapping will be considered for Subdivision Ordinance- -The Subdivision Ordinance restricts development in hazard areas. Portions of the LHMP with the associated mapping will be considered for inclusion intot the next Subdivision The Sanitary Sewer Management Plan- - The City of Antioch conveys waste water, but treatment is provided by a special district, Delta Diablo. The 2015 Sanitary Sewer Management Plan provides an inventory ofthe City's Sewer infrastructure and response procedures for first responders, recovery and cleanup in the case of overflow or backups. Portions oft the LHMP with the associated: mapping will be Emergency Management- --Thel Emergency Management Plan and Post-Disaster Recovery Plan are currently being updated by the City Manager (appointed in April 2017) who is, by Code, thel Director of Emergency Services. Portions oft the LHMP with the associated mapping willl be considered for inclusion Habitat Conservation Plan- The City is currently preparing al Habitat Conservation Plan. The opportunity to incorporate additional mitigation and abatement measures willl be contemplated for Capital Improvement Plan--Portions of the LHMP with the associated mapping willl be considered for inclusion into future Capital Improvement Plans. Capital improvement project proposals may take into consideration hazard mitigation potential as ai means ofevaluating project prioritization. Northeast Annexation Infrastructure. Plan- - The Cityi is int the process ofi identifying and prioritizing thei infrastructure improvements needed in thel NE Annexation. Portions of the area have al high chance of flooding. The residential area is generally on well water and septic tanks with soft soils. In the far northern portion oft the area thel liquefaction susceptibility is very high. In addition to the needs ofthe property owners, the opportunity to prioritize construction and provide condition specific design for the infrastructure due toj potential hazards exists. The City will consider hazards in the plan. 2.6. JURISDICTION-SPECIFIC NATURAL HAZARD EVENT HISTORY Table 2-101 lists past occurrences oft natural hazards for which: specific damage was recorded in the City of Antioch. Other hazard events that broadly affected the entire planning area, including the City of Antioch, are  inclusion into the next Zoning Code update.  Ordinance update.  considered fori inclusion into the next Sanitary Sewer Management Plan update.  into the next updates oft the various plans.  inclusion in the plan.  listed ini the risk assessments in Volume 1 ofthis hazard mitigation plan. 2.7 JURISDICTION-SPECIFIC VULNERABILITIES  Volume 1 oft this plan provides complete risk assessments for each identified hazard of concern. This section provides information on a few key vulnerabilities for the jurisdiction. Repetitive loss records are as follows:  Number ofFEMA-identified Repetitive-Loss Properties: 11 Number ofl FEMA-identified Seyere-Repetitive-Los: Properties: 3  Number of Repetitive-Loss Properties or Severe-Repetitive-Loss Properties that have been mitigated: Ina addition, thel NE. Annexation area has vulnerabilities that are not new, but result from a change inj jurisdiction only. Portions ofthe area have al high chance ofi flooding, The residential areai is generally on well water and septic tanks with soft soils. Ini the fari northern portion oft the area the liquefaction susceptibility is very high.  Unknown  TETRA TECH  2-11    Contra Costa County Hazard Mitigation Plan; Volume 2-Planning Partner. Annexes  Table 2-10. Past Natural Hazard Events  FEMAI Disaster # (fapplicable) FEMA-4308-DR N/A  Type of Event Flooding Flooding Flooding  Date  Damage Assessment the 0 Street corridor.  February 1-23,2017 Noe estimates available. Flooding resulted inr road closures,  downed trees andf flooding to some residences. Thisi isa problem that has occurred multiplet times and usually occurs in No estimates available. Flooding resulted inr road closures and flooding to some residences. Thisi is ap problem thath has occurred multiple times and usually occursi int the OStreet Maximum 75%1 reimbursement for ar net of$50,184. Citywide clean-up inf four (4) locations - road, debris andr mud Citywide; James Donlon Blvd. and" Tabora Drive- - road, mud Empire! Mine Rd. & Lone Tree Way road clean-up; Citywide clean-up in seven (7) locations' Villa Medanos Apts. $55k) creek washout; Fairgrounds- - sewer blowout $35k; Antioch marina north breakwater riprap $25k; Fulton Shipyard Road flow gate blowout $18k; James Donlon- =6 easto ofT Tabora Dr.-u uphill muds slide $10k; Rodeo Court #511 mud on right-of- way $10k; Flood emergency response- $36,475.) No estimates available No estimates available No estimates available No estimates available No estimates available  10/13/2009  corridor. $66,912Total removal. repairs; $189,475  FEMA 1628 CDAA- December 17, 2005-  2006-01 Winter Storm 2006"  January 3, 2006  Flooding  CA Office of Emergency Services (OES) PA (No.013- 02252)(PW 523-15) "EI Nino 98" N/A N/A N/A N/A N/A  February 1998  Severe Weathera Earthquakea Wildfirea Landslidea Droughta  Unknown Unknown Unknown Unknown Unknown  a. The City ofA Antiochl hash hadi natural hazard events int this category, however no specifics are available. Therei isr no documentation: at the City or Countyl level that provides data as to dates, number of occurrences, monetary damage assessments or any other supporting documentation. Known pasti impacts oft thel hazards has! been minimal asi itr relates tor major property damages andf financial  losses.  2.8 HAZARD RISK RANKING  Table 2-11 presents al local ranking for the City of Antioch of all hazards of concern for which Volume 1 ofthis hazard mitigation plan provides complete risk assessments. This ranking summarizes how hazards vary for this jurisdiction. As described in detail in' Volume 1,1 the ranking process involves an assessment oft the likelihood of occurrence for each hazard, along with its potential impacts on people, property and the economy.  2-12  TETRA TECH    2.Cityo ofAntioch  Table 2-11. Hazard Risk Ranking Risk Rating Score ProbablilyxImpach)  Rank 1 2 3 4 5 6 6 7 7  Hazard Type Earthquakeb Severe weather Landslidee Floodc Drought Dam and levee failurea. Wildfiref Seal level rised Tsunami  Category High Medium Medium Medium Low Low Low Low None  48 30 27 18 9 6 6 6 0  a. Based ont thel level ofc detail conductedi int ther risk assessment, ther risk rankingf fort this hazard is focused solely on damf failure impacts. d. Thes seal levelr rise data used fort this analysis did noti indicate any riskt tot the City of Antioch; however, Adapting to Rising Tides Therei ist no mappedi risk within thej jurisdiction; however, as score was given duet top potential impacts to people andt thee economy from  See Chapter 6.40 ofVolume 1for combined dam inundation list on whicht this assessment isb based. b, Haywired M7.056 event was used to assign probability andi impacts 1-percent annual chance event was usedt to assign probability andi impacts Initiative will update Seal Level Riser risks. (See Action 20) , Very Higha and High severity: zones were usedt to assign probability andi impacts  smoke  2.9 STATUS OF PREVIOUS PLAN ACTIONS and their implementation status at the time this update was prepared.  Table 2-12 summarizes the actions that were recommended in the previous version oft the hazard mitigation plan  TETRA TECH  2-13    Contra Costa County Hazardi Mitigation Plan; Volume 2-Planning Partner Annexes  Table 2-12. Status of Previous Plan Actions  Carried Over to N  Removed; Plan Update NoLonger Checkif Enter Completed Feasible Yes Action#  Action Item flooding.  A-1--Construct West Antioch Creek channel improvements, 4-1 new! box culverts, to eliminate property ande environmental damage caused by A-2-Finish construction of the Oakley/Trembath Detention Basin A-3--Construct Wilbur Avenue Culvert Crossing Comment: No Funding Source Currently Identified. A-4-Complete construction oft the Municipal Corporation' Yard Comment: Project no longer being considered and is no longer considered feasible. A-5--Seismic retrofit the City owned Historical Hard House building Comment: No Funding Source Currently Identified A-6--Construct Water Reservoir Maintenance Improvement projects A-7--Construct Water and Sewer pipeline projects to strengthen system and toe ensure safe andi reliabley provisions of public water ands sewer services Comment: Some projects completed. Ongoing A-8--Update Emergency Operations Plan Comment: Plan Update anticipated in 2017-2018 Fiscal Year A-9--Continue to support thei implementation, monitoring, maintenance, and updating of this Plan, as defined in' Volume 1. A-10-Continue to maintain compliance and good standing under the National Flood Insurance Program (NFIP) Enforce the flood damage prevention ordinance Participate in floodplain identification and mapping updates Provide public assistancelinformation. on floodplain requirements A-11--Consider participation int the Community Rating System (CRS). Comment: New staff to initiate participation int the CRS. A-12--Integrate Local Hazard Mitigation Plani intot the Safety Element of the Comment: Fully update off the General Plan anticipated int the nexts several) years. A-13--Where appropriate, support retrofitting, purchase, or relocation of structures inl hazard-prone areas to protect structures from future damage, with repetitive loss ands severe repetitive loss properties as priority. Comment: No funding source has been identified.  A-1  Comment: This isi now phase 1ofan multiphase project. See Action A-14. Design complete. Right ofv way being secured. Utilities being  relocated. Construction anticipated to begin in spring of2 2018.  V N  A-2 A-3  Comment:  improvements  V A-4 V A-5  A-6 A-7 A-8 V A-9  Comment: Some Reservoirs have had improvements completed. Others still needed. Additional seismic retrofits analyzed in Seismic  Study 2014. Ongoing.  Comment: Ongoing  andi impacts Comment: Ongoing General Plan  A-10 A-11 V A-12  2-14  TETRA TECH    2. City ofA Antioch  2.10 HAZARD MITIGATION ACTION PLAN AND EVALUATION OF  RECOMMENDED ACTIONS  Table 2-13 lists the actions that make upt the City of Antioch hazard mitigation action plan. Table 2-14 identifies the priority for each action. Table 2-15 summarizes the mitigation actions by hazard of concern and mitigation  type.  Table 2-13. Hazard Mitigation Action Plan Matrix  Applies to new or Hazards Objectives Responsible Estimated  existing assets Mitigated damage caused byf flooding Existing New and Existing  Met 13,17 15  Agencya Works Dept.. Works Dept./CCC Flood Control District* Works Dept/CCC Flood Control District* Cityo of Antioch Community Development Dept. Works Dept. Works Dept. ofE Emergency Services (CilyN Manager)  Cost Sources of Funding Timeline  A-1--Construct West Antioch Creek channel improvements, 4-1 new box culverts, to eliminate property ande environmental  Flood Flood  1,2,3,9,10, City of Antioch Public High  HMGP, PDM, FMA Short-term  A-2-Finish construction oft the Oakley/Trimbath Detention Basin  3,5,6,9,10, City of Antioch Public Medium Development Fees and Short-term  HMGP, PDM, FMA  A-3-Construct Wilbur Avenue Culvert Crossing  Existing Existing Existing watera ands sewer services Existing Existing  Flood 3,6,9,10,1 15 City of Antioch Public High  HMGP, PDM, FMA Short-term HMGP, PDM, FMA Long-term  A-4-Seismic retrofit the City owned Historical Hard House building. A-5--Construct Water Reservoir Maintenance Improvement projects  Earthquake  3,15  High  AIl Hazards 1,2,3,13 City of Antioch Public Medium Water fund and HMGP, Ongoing AIIH Hazards 1,2,3,13 City of Antioch Public Low Water and Sewer funds Ongoing  PDM, FMA  A-6--Construct Water and Sewer pipeline projects tos strengthen systems and to ensure: safe and reliable provisions of public  and! HMGP, PDM, FMA  A-7-Update Emergency Operations Plan  AIl Hazards  2,3,16 Cily of Antioch Office Medium General Fund and! HMGP Ongoing  A-8--Continue to support thei implementation, monitoring, maintenance, and updating of this Plan, as defined in Volume 1 Existing and New AIl Hazards 1,2,3,4,5,6, Citly of Antioch Office Low General Funds, Staff Time Ongoing  7,8,9,10,11, of Emergency Services 12,13,14,15, (City! Manager) 16,17,18  HMGP, PDM (for update)  A-9--Continue to maintain compliance and good standing under the National Flood Insurance Program (NFIP)  Enforce the flood damage prevention ordinance Participate inf floodplain identification andi mapping updates Provide public assislanceintormation. onf floodplain requirements andi impacts  Existing and New  Flood  3,5,6,9,10, City of Antioch Public Low:  General Fund  Ongoing  11,15  Works Dept.  TETRA TECH  2-15    Contra Costa County Hazard Mitigation Plan; Volume 2--Planning Partner Annexes Applies to new or Hazards Objectives Responsible Estimated A-10--Consider participation int the Community Rating System; (CRS)  existing assets Mitigated Existing and New All Hazards  Met 9  Agencya City of Antioch Community Development Dept. Community Development Dept. Community Development Dept. 1,2,3,9,10, Citly of Antioch Public High 13,17 Works Dept."CCC Flood Control District Works Dept* *CC Water District  Cost Sources of Funding Timeline  Low: Low  General Fund Developer Fees  Ongoing Short-term  A-11--Integrate Local Hazard Mitigation Plan intot the Safety Element of the General Plan Existing and New AIIH Hazards 1,4,5,7,11, City of Antioch  12,14,17  A-12--Where appropriate, support retrofitting, purchase, orr relocation of structures in hazard-prone areast to protect structures  fromi future damage, with repetitive loss and severr repetitive loss properties as priority  Existing  AIl Hazards 1,4,7,9,12, City ofAntioch  High  HMGP, PDM, FMA Long-term" HMGP, PDM, FMA Long-term  14,15,17  A-13-West Antioch Flood Creek Mitigation and Restoration  Existing and New  Flood  A-14-Updatel Inundation Analysis  Existing and New Dam andl Levee 3,5,6 City of Antioch Public Medium Water Fund and! HMGP Short-term Existing and New All Hazards 1,2,3,6,9, City ofA Antioch Public High City/County agreement Ongoing  Failure  A-15-NE Annexation Infrastructure Improvements A-16--Request FEMA tol Update flood! Maps Existing andl New A-17-NE. Annexation Infrastructure Improvements  10,16,17 Works Dept."CCC 3,4,5,6,7, FEMA/City of Antioch* Medium  and HMGP, PDM, FMA General Funds HMGP, PDM, FMA  Flood  Short-term Ongoing  10,12,14 10,16,17 13,17  Existing and! New AIIH Hazards 1,2,3,6,9, Cily of Antioch Public High  Works Dept. Works! Dept.  A-18--Study, Design andl Implement project for settlement oft the! Marina and the LS Street approach (north of 2nd Street)  Existing Existing and New  AIlH Hazards 1,2,3,9,10, Cityo of Antioch Public High  HMGP, PDM, FMA Long-term  A-19-Participation int the Adapting to Rising Tides Initiative  Flood 3,5,6,10, 11, Antioch Community Low Cily General Fund, HMGP Ongoing  12,16,18 Development Dept. 14 ofE Emergency Services (CiyN Manager) 12,16,18 Emergency Services (Cily Manager)  A-20--Implement program tot track dates, number of occurrences,' monetary damage assessments of disasters Existing and New AIlH Hazards 3,6,12,13, City of Antioch Office Medium  HMGP  Long-term  A-21-Update/Create various Plans such as Emergency Management, Post-Disaster Recovery, andlor Continuity of Operation Existing and! New: AII Hazards 3,5,6,10,11, Antioch Office of Medium Cily General Fund, HMGP Ongoing  Where multiple responsible agencies arel listed, an asterisk (9 identifies thel lead agency.  2-16  TETRA TECH    2.Cityo ofAntioch  Table 2-14. Mitigation Action Priority Do Benefits Exceed Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes No Yes No Yes  Can Project Bel Funded No No No No No Yes No Yes Yes Yes Yes No No No No Yes No No Yes No No  #of Action Objectives # A-1 7 A-2 6 A-3 5 A-4 2 A-5 4 A-6 4 A-7 3 A-8 18 A-9 7 A-10 1 A-11 8 A-12 8 A-13 7 A-14 3 A-15 8 A-16 8 A-17 8 A-18 7 A-19 8 A-20 5 A-21 8  Equal or IsP Project Under Existing  Grant High Low Low Low High High High Low Low Low Low High High High High Low High Medium Medium Low Medium  Grant- Yes Yes Yes Yes Yes Yes Yes No No No No Yes Yes Yes Yes No Yes Yes Yes Yes Yes  Programs/ Implementation Pursuit  Met Benefits Costs Costs? Eligible? Budgets?  Prioritya Prioritya Medium Medium Low Low Medium High Medium High High Medium High Low Medium Medium Medium High Medium Low High Low Medium  High High Medium Medium Medium High Medium High High Medium Low Low Low Low Low Low Medium Low Low Low: Medium Low High High High High Low Medium Medium High Medium Medium High Medium High Medium Low Low Medium Medium Medium  High  a. Seet the introduction tot this volume for explanation ofp priorities.  TETRA TECH,  2-17    Contra Costa Countyl Hazard! Mitigation Plan; Volume 2-Planning Partner Annexes  Table 2-15. Analysis of Mitigation Actions Action Addressing Hazard, by Mitigation Typea  Public Education Natural  Community A-8  Property  and Resource Emergency Structural Climate Capacity  Hazard Type Prevention Protection Awareness Protection Services Projects Resilient Building  AIl hazards A-8,A-12, A-8,A-11, A-8,A-20  A-8  A-7,A-8, A-20 A-14  A-8  A-8  A-14,A-17, A-14,A-17, A-18 A-18,A-20  Dam and Levee failure Drought Earthquake Flood Landslide Severe weather Tsunami Wildfire  A-14 A-5,A-6, A-15 A-9,A-10, A-13  A-15 A-13  A-5,A-6 A-4,A-5,  A-15  A-1,A-2,A-3, A-1,A-2,A-3, A-16  A-1,A-13 A-1,A-13  A-19  a. Seet thei introduction tot this volume for explanation ofr mitigation types.  2.11 FUTURE NEEDS TO BETTER UNDERSTAND RISK/VULNERABILITY In2 2012-2013 FEMA conducted al Risk Mapping, Assessment and Planning (Risk MAP) Program nationwide. The purpose ofthis Riskl MAP program was to improve flood hazard information for the National Flood Insurance Program (NFIP); promote increased national awareness and understanding of flood risk; and, support Federal, FEMA's Final Discovery Report was published in 2013, and covered all of Contra Costa County, toi include the Suisun Bay, San Pablo Bay, San. Joaquin Delta, and San Francisco Bay watersheds and coastlines. Inl March of2017, the City of Antioch hosted Resilience Dialogues, facilitated by diobalChangegov,US. Global Change Research Program), to explore Antioch's risk: from climate variability and change. Quoting the Resilience Dialogues Final Synthesis Report, "Antioch is interested inl building civic engagement by linking climate resilience to community values and integrating sea-level rise and flooding projects into hazard mitigation The City also annexed 759 acres of mixed use (commercial, industrial and residential) land with frontage on the These research documents, taken together with the need toj plan on behalf ofa annexed land, and ongoing need to update research and data fort the Local Hazard Mitigation suggests an excellent opportunity to integrate these  State, and local mitigation actions to: further reduce risk.  planning." water,  assets and build on local understanding ofrisks and vulnerabilities.  2-18  TETRA TECH    2.CityofAntioch  2.12 REVIEW AND INCORPORATION OF RESOURCES FOR THIS ANNEX The following technical reports, plans, and regulatory mechanisms were reviewed toj provide information for this  annex.  City of Antioch Municipal Code-The1 municipal code was reviewed for the full capability assessment City of Antioch Flood Damage Prevention Ordinance-The flood damage prevention ordinance was Community and Municipal Climate Action Plans-Plans were reviewed to verify that climate related Urban Water Management. Plan, 2015 -Plan was reviewed for discussion of drought forecasting and planning. Also used to review the City's water shortage contingency plan (WSCP) for emergency City of Antioch General Plan- Plan was reviewed to see where improvements could be made relative to Resilience Dialogues and) Final Report --March 2017-Online conference/dialogue intended to better understand risks in communities and plan for long-term resilience. Dialogue included participants representing: Community leaders & citizens; specialist in climate change and environmental policy; community network leaders; public sector staffa and elected officials. Facilitated by U.S. Global Change Research Program. Assisted in determining potential action items related to Climate Change. California Department of Finance website-Used top provide information on City population Technical Reports and Information- -The following outside resources and references were reviewed: Hazard Mitigation Plan Annex Development Tool-kit-The tool-kit was used to: support the development ofthis annex including past hazard events, noted vulnerabilities, risk ranking and action News archives, Internet search, documentable oral and written local histories--Archived newspaper articles; media coveragei in general; publics sector staff and citizens; historical society accounts; photo collections; etc. are utilized for past hazard events when reliable. Neighboring County and Local Hazard Mitigation Plans (LHMP)-Proximity to 'neighbor' hazards; differences in points of view and analysis; mutual aid issues in disaster; etc.  and for identifying opportunities for action plan integration. reviewed for compliance with the National Flood Insurance Program.  hazards were discussed  preparedness and plans for a catastrophic event.  Hazard Mitigation.  ntpwww.dorcagov,  development.  TETRA TECH  2-19    2    +  5 0   U  JL  6    1  5 0  P8 AjOJON  Ave Hillcros    +  2  PH AOION  Ave Hilcre  Deer Valley Ro    5    to F  MAIAES   MoeN  F  Ave  beer Valley    -  5 0