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HomeMy WebLinkAboutMinutes - July 9, 2019 SSLODI CITY COUNCIL SHIRTSLEEVE SESSION CARNEGIE FORUM, 305 WEST PINE STREET TUESDAY, JULY 9, 2019 A. Roll Call by City Clerk An Informal Informational Meeting ("Shirtsleeve" Session) of the Lodi City Council was held Tuesday, July 9, 2019, commencing at 7:20 a.m. Present: Council Member Johnson, Council Member Nakanishi, and Mayor Pro Tempore Kuehne Absent: Council Member Mounce, and Mayor Chandler Also Present: City Manager Schwabauer, City Attorney Magdich, and City Clerk Ferraiolo NOTE: Mayor Pro Tempore Kuehne left the meeting at 8:01 a.m. NOTE: Council Member Nakanishi left the meeting at 8:11 a.m. B. Topic(s) B-1 Receive Information Regarding 200-Year Flood Risk Assessment (PW) Senior Civil Engineer Sean Nathan provided a PowerPoint presentation regarding the 200-year flood risk assessment. Specific topics of discussion included Senate Bill 5 background, State Plan of Flood Control facilities, urban level of flood protection, compliance finding requirements, timelines, mapping process, results of floodplain study, City options, requirements in FEMA and 200-year flood areas, project to provide additional protection, next steps, and staff recommendations. In response to Mayor Pro Tempore Kuehne, Mr. Nathan stated he will provide Council with copies of all of the maps referenced in the PowerPoint presentation. Council Member Nakanishi stated he supports staff's recommendations to meet the minimum SB 5 requirement to allow up to three feet of standing water and the City project to construct a wall at Turner Road and Mills Avenue; however, he questioned if the City must do the third component of requiring buildings to raise floors up to the 200-year flood elevation level. Mr. Nathan responded that the City is required to make building floor levels be three feet, but it could impose stricter regulations at a higher level. If the City does not impose at least the minimum requirement, it would be in violation of SB 5. City Manager Schwabauer explained that additionally the City would open itself to litigation if homes were not built to the minimum flood standards. Council Member Nakanishi responded that it appears the City must implement the third component as well, otherwise it will be in violation. Mayor Pro Tempore Kuehne stated he was satisfied with the City meeting the minimum requirements set forth by SB 5 and he supports construction of a wall on Turner Road and Mills Avenue; however, he would like to see the schematics as aesthetics of the wall are just as important as its protective features. Mike Lusk, member of the public, stated he realizes this plan takes into account that the river would be overflowing at the time of a storm, but he questioned what the City's response would be for the street runoff that would also be occurring at the same time during a significant storm. Mr. Schwabauer stated that SB 5 only addresses outside water coming into the system; not inside water getting out. He added the City has an internal storm drainage plan that meets the needs. Mr. Lusk further questioned how the City map will affect existing homeowners with respect to taking out home loans and looking for flood protection insurance; would this map prohibit 1 people from getting loans. Mr. Schwabauer explained there would be no impact on most of the new housing being constructed because all of the areas to be developed over the next 20 years are outside of the floodplain. Mr. Nathan further explained that even homes already developed that are destroyed by some means and rebuilt to new standards would not be affected because SB 5 only affects new development. In response to Mr. Lusk, Mr. Nathan stated that data was collected for the 1955 flood and the 1986 flood, but he was uncertain what level events they were (i.e. 100-year, 200, 300, etc.). B-2 Receive Information Regarding Riverbank Stabilization Project and Associated Tree Removals (PW) Senior Civil Engineer Sean Nathan provided a PowerPoint presentation regarding the Lodi Lake Park Riverbank Stabilization Project and associated tree removal. Specific topics of discussion included location, background information, State grant, consultant for design and permitting, existing condition assessment, design/project overview, required permits, tree assessment, removal of 30 trees, and next steps. NOTE: Mayor Pro Tempore Kuehne left the meeting at 8:01 a.m. (followed by Council Member Nakanishi's departure at 8:11 a.m.), effectively terminating a quorum of the Council. Staff continued with an informal presentation on the topic. Background materials and PowerPoint presentation are on file in the City Clerk's Office. C. Comments by Public on Non-Agenda Items None. D. Adjournment No action was taken by the City Council. The meeting adjourned at 8:01 a.m. due to lack of a quorum. ATTEST: Jennifer M. Ferraiolo City Clerk 2 200-Year Flood Risk Assessment Council Presentation July 9, 2019 The City of Lodi Public Works Overview •California Senate Bill 5 (SB 5) o Background Information o Key Points o Timelines •Lodi’s 200-Year Floodplain Study o Process o Results •City Options •The Next Step SB 5 Background Information •2005 - Hurricane Katrina o CA legislators to strengthen the flood protection programs •2007 - Passed CA Senate Bill 5 o Created specific flood risk management requirements o Strengthened the relationship between flood management and local land use decision making •2012 - Amend. SB 5 (SB 1278 and AB 1965) o Extended compliance timelines o Directed Department of Water Resources (DWR) to prepare 200-year floodplain maps for urban areas protected by State Plan of Flood Control (SPFC) facilities o Required non-SPFC urban areas (Lodi) to prepare their own 200-year floodplain maps SB 5 Background Information State Plan of Flood Control (SPFC) facilities SB 5 Key Points •Sacramento-San Joaquin Valley (Urban Areas) •“Urban Level of Flood Protection” findings prior to certain land use approval o Level necessary to withstand flooding that has a 0.5% chance (1 in 200) of occurring each year •“Withstand” < 3’ flood depth •Does not analyze local drainage system Note: Different from Federal Flood Zones (FEMA), 1% chance (1 in 100) of occurring each year SB 5 Key Points SB 5 Compliance Findings Required Prior to: 1.Agency entering into a development agreement on a property in the flood hazard zone; 2.Approving a discretionary permit or entitlement for construction of a new residence in the flood hazard zone; or 3.Approving a Tentative Map or Parcel Map for a subdivision in the flood hazard zone. Note: SB 5 requirements are not applicable to remodel / reconstruction of an existing dwelling unit SB 5 Timelines Deadlines •July 2, 2015 - Amend General Plan •July 2, 2016 - Amend Zoning Ordinance Milestones •2015 - Staff believed the City was outside the 200-year flood risk (based on the FEMA 500-year flood zone designation) •2017 - Staff revisited the issue and concluded that Lodi actually falls between the 100-year to 500-year flood zones o 200-Year Mapping Required •Dec, 2017 - City hires Kjeldsen, Sinnock & Neudeck, Inc. (KSN) for 200-Year Floodplain Study o Also contracted Civil Engineering Solutions for independent review (required by SB 5) •Dec, 2018 - Floodplain Study and Mapping Completed 200-Year Floodplain Study •Mapping Process o KSN built a stormwater model to simulate the runoff for the entire Mokelumne River tributary area o Calibrated the model with known storm event data o Built a separate 3D surface of the City o Ran the 200-year stormwater model with the 3D surface o Mapped the flood water depths on the 3D surface o Identified critical locations where floodwater enters the City 200-Year Floodplain Study Results •Color Map •WID Canal •River Low Points o Mills & Turner o WID Fish Screens •Minimal Areas > 3’ (SB 5 Restriction) •Developments Since 2015 < 3’ •2010 GP Areas < 3’ 200-Year Flood Plain Study City Options •Set 200-Year Flood Protection Standards: o Allow up to 3’ of standing water (SB 5 standard maximum) o Be more restrictive (i.e. no standing water, or up to 1’ or 2’) •Requirements when Not Met: o Require to raise building floor to 200-Year Flood Elevation o Require a height above the 200-Year Flood Elevation (i.e. 6” or 12”) •Projects to Provide Additional Flood Protection o Wall at Mills & Turner •Staff Recommendation: o Standards to meet minimum SB 5 Compliance o Already FEMA compliant o Minimize burden on citizens and developers o Project(s) for additional protection 200-Year Flood Plain Study Requirements in FEMA & 200-Year Flood Areas •Current LMC (15.60.180.C) requires development in FEMA Flood Zones to be 18” above the 100-Year Flood Elevation. •Revise to the greater of 200-Year or FEMA Requirements. 200-Year Flood Plain Study Project to Provide Additional Protection •Turner & Mills Wall o Same as City’s current Emergency Plan o More Permanent & Structurally Sound o Greatly Reduces Flood Depths o No Impact on SB 5 Compliance After Before 200-Year Flood Plain Study Next Step •Amendments: o General Plan (Safety Element) o Zoning Ordinance Amendment o Lodi Municipal Code (Flood Management) •Staff Recommendations o Minimum SB 5 Requirements: Allowing up to 3’ of standing water If over 3’, require buildings to be raised up to 200-Year Flood elevation Project to construct a wall at Turner & Mills Questions? Council Presentation July 9, 2019 The City of Lodi Public Works Lodi Lake Park Riverbank Stabilization Project & Associated Tree Removal Location Background Information •Grant in State’s FY 2018/19 Budget o Assemblyman Jim Cooper o State’s Department of Parks and Recreation o $1,000,000 Grant for Erosion Control at Lodi Lake Park (Mokelumne River) o July 1, 2018 - June 30, 2021 •December 2018 Hired Kjeldsen, Sinnock & Neudeck (KSN) for Design & Permitting o Proposed Design / Permit includes •Rock Slope Protection (Rip-Rap) •Plant & Grass Reestablishment •Tree Removal & Replanting Project Overview •Existing Condition Assessment o Erosion Impacted Locations o Existing River Cross-Sections o Tree Assessment Project Overview •Design o Proposed Design / Cross-Sections Project Overview •Permitting o US Army Corps. of Engineers •Proposing: Nationwide Permit 27 “Aquatic Habitat Restoration, Establishment, and Enhancement Activities” Removal of Old Broken Concrete Removal of Non-Native Trees o State Regional Board o State Department of Fish and Wildlife Tree Assessment Tree Assessment Tree Assessment Tree Assessment •Removal ~ 30 Trees o Notice for Dedicated Trees •Primarily in Eroded Bank •Included Arborist Review •Will Replant Native Trees Next Step Next Step •Finalize Design & Permit Approach •Submit Permit Applications •Complete Plans & Specifications •Bid & Construct Improvements Questions?