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D-11. Adopt Resolution Adopting Carver County Hazard Mitigation Plan ; litio MEMORANDUM . CITY OF TO: Todd Gerhardt, City Manager CHANHASSEN FROM• Don Johnson, Fire Chief and Emergency Manager `, DATE: Apr>17, 2015 7700 Market Boulevard PO Box 147 Chanhassen,MN 55317 SUBJ: Adopt Resolution Adopting Carver County Hazard Mitigation Plan Administration Phone 952 2271100 PROPOSED MOTION: Fax 952 2271110 "The City Council Adopts a Resolution Adopting the Carver County Hazard Building Inspections Mitigation Plan dated December 8, 2014 " Phone 952 2271180 Fax 952 2271190 Approval requires a simple majority vote of the City Council Engineering Phone 952 2271160 BACKGROUND Fax 952 2271170 This proposal is related to the Presidential Disaster Declaration DR-4182-MN covering the Finance flooding in Carver County and the State of Minnesota in June of 2014 To be eligible for Phone 952 2271140 FEMA Grant Funding, a community is required to have an"approved"Hazard Mitigation Fax 952 2271110 Plan Carver County amended their plan to allow commumties within Carver County to Park&Recreation adopt the County's "approved"plan in December of 2014 Phone 952 2271120 Fax 952 2271110 Chanhassen will benefit from adopting the county plan as follows. Recreation Center • Allows the community to meet the Federal Disaster Mitigation Act of 2000 2310 Coulter Boulevard • Allows the community to meet required criteria for mitigation funding as a result of Phone 952 2271400 future disaster declarations related to landslide/slope failure,property Fax 952 2271404 acquisition/structure relocation,water supply/waste water treatment, and bridges and Planning& culverts Natural Resources • Allows the community to better plan for disasters consistent with County response Phone 9522271130 Fax 952 2271110 Baseline documentation is included with this memorandum. The full county plan is available on line at http//www.co.carver mn us/departments/ER/hazmit asp Public Works 7901 Park Place RECOMMENDATION Phone 952 2271300 Fax 952 2271310 Staff recommends City Council adopt a resolution adopting the county plan for the reasons Senior Center stated above Phone 952 2271125 Fax 952 2271110 ATTACHMENTS Website 1 Resolution. www ci chanhassen mn us 2 MN Dept of Public Safety Notice of Availability of Hazard Mitigation Grant Program funds for DR-4182-MN 3. Carver County Resolution No 05-15 Adopting Carver County Hazard Mitigation Plan Amendment g•\fire dept\dj\mitigation resolution april 2015 docx Chanhassen is a Community for Life-Providing for Today and Planning for Tomorrow CITY OF CHANHASSEN CARVER AND HENNEPIN COUNTIES, MINNESOTA DATE: April 13, 2015 RESOLUTION NO: 2015-XX MOTION BY: SECONDED BY: RESOLUTION ADOPTING THE CARVER COUNTY ALL-HAZARD MITIGATION PLAN WHEREAS, Carver County adopted the Carver County All-Hazard Mitigation Plan via Resolution 34-12 on June 26, 2012; and WHEREAS, Carver County adopted the Carver County Hazard Mitigation Plan Amendment via Resolution 05-15 on February 3, 2015, and WHEREAS,with this Amendment, additional text was added to the Carver County All- Hazard Mitigation Plan with regards to Landslide/Slope Failure, Property Acquisition/Structure Relocation, Water Supply/Wastewater Treatment, and Bridges/Culverts, as referenced in Attachment A, and WHEREAS, this additional text allows eligible entities to apply for grant funding to support these projects NOW, THEREFORE, BE IT RESOLVED that the City of Chanhassen continue to support the hazard mitigation planning effort, and adopts the Carver County All-Hazard Mitigation Plan, as amended Passed and adopted by the Chanhassen City Council this 13th day of April, 2015. ATTEST. Todd Gerhardt, City Manager Denny Laufenburger, Mayor YES NO ABSENT MINNESOTA DEPARTMENT OF PUBLIC SAFETY "' Homeland Security and Emergency Management ° F*& .) 444 Cedar Street• Suite 223 • Saint Paul,Minnesota 55101-6223 e/ Phone 651-201-7400•Fax• 651-296-0459•TTY• 651-282-6555 Mk www dps state mn us Date February 5,2015 To County,City and Tribal Emergency Management Directors County and City Administrators Alcohol and Gambling Enforcement Notice of Availability of Hazard Mitigation Grant Bureau of Program funds for DR-4182-MN Criminal Apprehension As a result of Presidential Disaster Declaration DR-4182-MN,funding is available for mitigation Driver activities through the Federal Emergency Management Agency(FEMA)Section 404-Hazard and Vehicle Mitigation Grant Program(HMGP) The declaration was a result of Severe Storms,Straight-line Services Winds,Flooding,Landslides,and Mudslides between June 11 and July 11,2014 m thirty-seven Emergency counties and three tribal communities,however HMGP funds are available statewide. Communication Networks The Hazard Mitigation Grant Program provides grants to state and local governments,eligible Homeland private non-profit organizations,and Tribal communities to fund long-term,permanent mitigation Security and measures followmg a major disaster declaration. HMGP is a cost share program with 75%of the Emergency funds coming from the federal government and 25%a local share Funds available as a result of Management DR-4182-MN are estimated to be$3,914,102.00(6 month estimate) The final lock-in amount is Minnesota determined for the disaster at the one year mark. State Patrol Projects proposals must be in line with eligibility requirements outlined by FEMA's Hazard Office of Mitigation Assistance program and must result in the reduction or elimination of potential Communications natural hazards and the protection of life and property. For DR-4182-MN,priorities will be Office of given to Justice Programs Office of 1 Acquisition and demolition of flood prone properties Pipeline Safety 2. Acquisition and demolition,or relocation of structures in landslide hazard areas where nsk Office of of catastrophic failure of the slope is imminent(five-years) Traffic Safety 3 Community tornado safe room construction or retrofit projects,currently unprotected populations at mobile home parks,neighborhoods and apartments with construction of State Fire slab-on-grade,schools,parks and camping facilities Marshalp g 4. Retrofitting of facilities,including burying or retrofitting of power lines 5 Flood damage reduction and small flood control projects 6 Wildfire resistant construction materials,defensible space and sprinlders 7. Soil stabilization to protect critical facilities and/or infrastructure 8 Elevation or relocation of flood prone facilities Interested applicants must submit the one-page Notice of Interest(NOl)form to Hazard mitigation@state nm us as soon as possible,and no later than March 6,2015.If * *HSEM�' eligible,you will be mvited to submit a full application Complete applications received by June 1, 2015 will be reviewed,scored,ranked and prioritized for funding consideration Applications and NOIs received after June 1,2015 will be considered for funding,if funding is still available. EQUAL OPPORTUNITY EMPLOYER To be eligible for HMGP funding,specific criteria must be met 1 The applicant must have a FEMA approved all hazard mitigation plan.The proposed mitigation measure must be in conformance with the goals and objectives of the local hazard mitigation plan as well as the State Hazard Mitigation Plan a Communities without a current FEMA approved plan may apply for HMGP funds to update their plan Plans must be completed,adopted and approved by FEMA within one year of the declaration prior to receiving HMGP funds 2. The community must participate and be in good standing in the National Flood Insurance Program if a special flood hazard area has been identified by FEMA 3 The proposed project must be cost-effective and show that the benefits of the project will outweigh the cost. It must pass the Benefit Cost Analysis,which is the most difficult requirement for project approval 4 The project must be environmentally sound and will require environmental documentation prior to funding. Mitigation projects not funded through this declaration may be considered under the FEMA Pre-Disaster Mitigation or Flood Mitigation Assistance programs These programs typically are on an annual funding cycle however,the application period for these programs is currently unknown. Resources HSEM Hazard Mitigation Notice of Interest(NOI) Hazard Mitigation Assistance Unified Guidance Addendum to the Hazard Mitigation Assistance Unified Guidance If you have any questions,please contact Jennifer Nelson, State Hazard Mitigation Officer at(651)201-7427 Jim McClosky,Hazard Mitigation Planner at(651)201-7455 Matti Gurney,Hazard Mitigation Planner at(651)201-7443 Nycole Fry,Hazard Mitigation Planner at(651)201-7423 cc Minnesota HSEM Regional Program Coordinators Minnesota Silver Jackets DocuSign Envelope ID E0E86204-A553-4081-8526-4F943F1FlElB BOARD OF COUNTY COMMISSIONERS CARVER COUNTY, MINNESOTA DATE February 3,2015 RESOLUTION NO 05-15 MOTION BY COMMISSIONER Deqler SECONDED BY COMMISSIONER Lynch ADOPTION OF THE CARVER COUNTY HAZARD MITIGATION PLAN AMENDMENT WHEREAS, the County of Carver adopted the Carver County All-Hazard Mitigation Plan via Resolution 34- 12 on June 26, 2012, and WHEREAS, additional text is added to the Carver County All-Hazard Mitigation Plan with regards to Landslide/Slope Failure, Property Acquisition/Structure Relocation, Water Supply/Wastewater Treatment, and Bridges/Culverts, as referenced in Attachment A, and WHEREAS, this additional text allows eligible entities to apply for grant funding to support these projects, and NOW THEREFORE BE IT RESOLVED that Carver County continues to support the hazard mitigation planning effort and wishes to adopt the amendments to the Carver County All-Hazard Mitigation Plan as part of the already approved plan. YES ABSENT NO Degler Ische Lynch Maluchnik Workman STATE OF MINNESOTA COUNTY OF CARVER I, David Hemze, duly appointed and qualified County Administrator of the County of Carver, State of Minnesota, do hereby certify that I have compared the foregoing copy of this resolution with the original minutes of the proceedings of the Board of County Commissioners, Carver County, Minnesota, at its session held on the 3`d day of February, 2015, now on file in the Administration office, and have found the same to be a true and correct copy thereof HDocuSigned by ut 5A10877562B942D.. County Administrator AMENDMENT Amending the approved 2012 Hazard Mitigation Plan December 8, 2014 Section 1 PLAN, BACKGROUND, AND PURPOSE 1 1 Overview The Carver County Multijurisdictional Hazard Mitigation Plan (HMP) as written fulfills the requirements of the Disaster Mitigation Act of 2000, which is administered by the Federal Emergency Management Agency (FEMA) The act requires all Hazard Mitigation Plans be updated every five years. This is an amendment to the approved 2012 Hazard Mitigation Plan. This amendment is being put together because of the June 2014 rainfall we encountered in a short period of time The rainfall covered the entire county and ranged from 9.26 inches to 13.65 inches Most of this rain fell within a couple of days Carver County had areas with road wash-outs, bridge wash-outs and culvert damage. 1.4 Purpose The purpose of this amendment is to identify risk and vulnerability to Carver County and to formulate a plan of action to reduce damage and loss of life from these natural disasters. This amendment shall serve as a benchmark for future mitigation activities and will identify mitigation goals and objectives for Carver County and its cities and townships Realizing that identifying our community's risk and working collectively toward the prevention of disaster in our community is in everyone's best interest, Carver County Emergency Management has taken the lead on this amendment. Section 4 RISK AND VULNERABILITY ASSESSMENT 4 1 Update to the Risk and Vulnerability Assessment There has been one significant event since the approval of the May 2012 Hazard Mitigation Plan In this event, we had rain over the entire county which ranged from 9 26 inches to 13 65 The deluge of rain happened in June of 2014, this lead to saturated soils, soil erosion and flooding throughout the county Flooding is identified in the HMP but does not identify landslides/slope failure, property acquisitions/structure relocation, water supply/wastewater treatment, and bridge/culvert replacement, specifically All four of these areas are identified in the amendment 1 • Landslide/Slope Failure —the rainfall event saturated the soils in Carver County to the point that hill sides, Creek banks, and river banks were weakened The slopes and the soils started to fall Some of these slope failures impacted, homes, trails, and water ways • Property Acquisition/Structure Relocation —this is something that we did not have in our HMP from the beginning This was brought to light when we had a slope failure impact a home in Chanhassen The property owner lost approximately 65 feet of earth when the slope near the property failed and continues to deteriorate at a slower rate each time it rains. • Water Supply/Wastewater Treatment—The June 2014 rainfall impacted the Norwood Young America (NYA) wastewater treatment facility shutting it down for days The water runoff from the rain filled the ditch next to the treatment plane which backed up onto the property The City tried to sandbag the facility but could not keep up with the rising water. One building had water covering pumps and electric-powered circuitry. The depth of water was estimated at 13 feet deep. Another building had approximately 6 feet of water and covering pumps and electric-powered circuitry The other City impacted was Mayer The City of Mayer found sanitary storm sewer manholes that were submerged in water for several days. This created inflow & infiltration issues for the wastewater treatment facility The high wastewater alarms started to sound in several lift stations along with the plant it-self The wastewater treatment facility started to flood so the City had to go into by-pass to save the wastewater treatment facility from totally flooding out. • Bridges/Culverts— The June 2014 rainfall impacted several bridges and culverts through-out Carver County Some of these bridge repairs/replacements and culvert replacements are not being covered by the disaster declaration One culvert in Watertown Township is not being covered but sustained enough damage that the weight limits had to be reduced This is an old wood box culvert with a roadway above. The township would like to see this replaced with a new culvert so traffic can resume at normal weights 4 2 Risk and Vulnerability Assessment Process The following natural and technological hazards were identified in the amendment • Landslides/Slope Failure • Flash Flooding The following infrastructure, facilities and buildings are identified as uniquely vulnerable to landslides, slope failure and flash flooding • Homes/Structures Vulnerable to Flooding and Erosion: Property Acquisitions/Structure Relocation • Water Supply/Wastewater Treatment • Bridges/Culverts 2 4.3.6 Landslide/Slope Failure Hazard Identification Landslide/Slope Failure is the downward falling or sliding of a mass of soil/earth from a steep slope Hazard Profile Data on the probability and frequency of occurrence of landslide/slope failure is limited with recent research Carver County experienced its worst landslide/slope failure in June of 2014 when we had several inches of rain. This rain saturated the soil which made the slopes unstable. Assets Exposed to Hazard • Property RiskNulnerability: Landslide/Slope Failure in this event has affected approximately 11 properties that we have been made aware of The Cities affected by these Landslide/Slope Failures are the Cities of Carver, Chaska and Chanhassen The structures on these properties are in danger of earth moving across the structure or the earth moving away from the structure • People RiskNulnerability. In evaluating vulnerability of the population in Carver County the risk/vulnerability includes the entire population since there is no way to determine the impact/magnitude of a landslide/slope failure • Environmental RiskNulnerability: Risks to the environment are high when rain falls at a fast rate in a short period of time. The soil saturation could lead to soil erosion, which could mean the loss of vegetation and change of water ways 4.3.7 Properties Uniquely Vulnerable to Landslides, Erosion and Flash Flooding. Targeting Home and Structure Acquisition and Relocation Hazard Identification Property acquisition and structure relocation projects involve the voluntary physical relocation of an existing structure to an area outside of a hazard-prone area and, typically, the acquisition of the underlying land Relocation must conform to all applicable State and local regulations The property must be deed-restricted in perpetuity to open space uses to restore and/or conserve the natural floodplain function. Hazard Profile The approved HMP from May 2012 does briefly talk about prioritizing properties for reconstruction and/or acquisition/removal. This is found under 4.3.3 flooding, at the bottom of page 4.35. The sentence does not talk about relocation of structures, so we wanted to add this for a viable option 3 Assets Exposed to Hazard • Property Risk/Vulnerability. Property Acquisition/Structure Relocation has affected one home in the City of Chanhassen adjacent to a landslide/slope failure from the June 2014 rains/flooding We have added this to the Hazard Mitigation Plan for this property but for future structures that are impacted by flood plain changes or landslides/slope failures • People Risk/Vulnerability. In evaluating vulnerability of the population in Carver County the risk/vulnerability includes the entire population since there is no way to determine the impact/magnitude of a Property Acquisition/Structure Relocation • Environmental RiskNulnerability: Risks to the environment are minimal This process would involve the movement of structures from one location to another or possible total demolition 4 3 8 Public Facilities Uniquely Vulnerable to Landslides, Erosion and Flash Flooding: Water Supply/Wastewater Treatment Hazard Identification This is being added because of the June 2014 rain events in Carver County. The Norwood Young America wastewater treatment facility sustained damage from flood waters that shut down the plant This impacted the city by having residents minimize the use of water, which reduced wastewater. The facility sustained large amounts of water in two of the facility buildings which took out pumps and electrical equipment This shut down the plant which forced the city to bypass normal facility treatment operations. The Watertown Wastewater Treatment Facility is another facility that has been impacted in the past In 2011, the Crow River reached the height of 16.44 ft , but the National Weather Service was forecasting the crest to reach the 1965 flood numbers of 19 23 or higher. This forecast prompted the city to start building a levee system around the facility to reduce the impact of the river water into the facility and shutting it down. The City of Mayer has a Wastewater Treatment Facility that was impacted by the rain events of June 2014. The facility was put into bypass mode because there was too much inflow & infiltration of fresh water into the system from sanitary sewer manholes submerged under water This bypass mode does not allow the wastewater treatment facility to treat the wastewater properly When looking at power outages, there is a great impact to water supply facilities along with wastewater facilities. The impact is total shut down if facilities are not backed up with generator or another source of power What can be done to reduce or eliminate this impact so residents and businesses have water but that water can be treated before leaving the wastewater facility? 4 Hazard Profile The reduction or complete loss of either of these facilities would impact more than 50% of a community. This would be a catastrophic event to the community. The loss of water supply to a community affects the residents, businesses and the local fire department The loss of a wastewater treatment facility would also impact the residents and businesses because wastewater would not be treated in the normal process Assets Exposed to Hazard • Property Risk/Vulnerability. The flooding of the wastewater treatment facility in Norwood Young America affected several thousand people during the June 2014 rain/flood event This type of flooding event has the potential of affecting wastewater treatment facilities all over Carver County • People RiskNulnerability: Residents and business are the ones affected by the shutdown of a wastewater treatment facility and even a water-supply facility will affect residents and business along with the fire department for fire suppression • Environmental Risk/Vulnerability. The environmental issues would be untreated wastewater being passed through or around the wastewater treatment facility because it is not working properly The potential of raw sewage flowing into rivers, lakes, and marches is high when there is a failure 4 3 9 Infrastructure Uniquely Vulnerable to Landslides, Erosion and Flash Flooding: Bridges/Culverts Hazard Identification Through-out the county there were bridges and culverts that sustained damages form the June 2014 flooding event that was not eligible for disaster funds The bridges and culverts were damaged enough that weight restrictions were added Communities would like to upgrade these bridges/culverts to mitigate further damage and total lose of the bridge/culvert Hazard Profile The loss of a bridge/culvert in some areas of the county would be critical This is not the same impact for more urban areas of the county However, this is an impact that affects the community for the duration of the repair or replacement Assets Exposed to Hazard • Property Risk/Vulnerability: Risks/Vulnerability to the property are minimal. The removal process and reconstruction process would be monitored. • People Risk/Vulnerability. Residents in the area or people that travel in the area are affected The bridges that are damaged may be put under weight restrictions The older bridges are in rural areas where there are farming activities Some of these activities require large truck or tractors for hauling 5 Adding weight restrictions to these bridges may have a large impact on the farming industry in those areas. • Environmental Risk/Vulnerability. Risks/Vulnerability to the environment are minimal. The removal process and reconstruction process would be monitored. 5.2.1 Flooding Landslide/Slope Failure • Mitigation Goal #5: To improve landslide/slope failures that impact public and/or private infrastructure • Objective #5• Improve the landslide/slope failure areas so no further erosion will impact public and private infrastructure Property Acquisition/Structure Relocation • Mitigation Goal #6• To acquisition or relocate structures that are in danger of structural damage due to flooding or landslide/slope failure • Objective #6: Purchase structures or move them to another location to eliminate structural damage due to flooding or landslide/slope failure. Water Supply/Wastewater Treatment • Mitigation Goal #7• Reduce the potential of total failure of these facilities • Mitigation Goal #8: Reduce inflow& infiltration into the sanitary sewer system • Objective #7. Assist these facilities in planning by looking at flooding, power outages, back-up systems, etc • Objective #8: Assist Cities and Townships with inflow & infiltration issues Bridges/Culverts • Mitigation Goal #8. Replacement of failing/damaged bridges and culverts • Objective #8. Assist Cities and Townships with bridges and culverts that are in need of replacement to improve weight limits, safety of vehicles passing over, and water passage 6