MADERA COUNTY STORM WATER RESOURCE PLAN. TAC Kick-off Meeting #1. August 7th, 2017

Transcription

1 MADERA COUNTY STORM WATER RESOURCE PLAN TAC Kick-off Meeting #1 August 7th, 2017

2 Meeting Agenda 2:00 Introductions (15 mins) Meet the SWRP team and other TAC Members 2:15 SWRP Purpose and Goals (5 mins) TAC Members will review and provide input on the draft SWRP Purpose and Goals 2:20 TAC Role & Responsibilities (10 mins) The Role of the TAC to support the SWRP development will be defined 2:30 Prioritization Methodology and Criteria Weighting (50 mins) Presentation of Proposed Prioritization approach with opportunity for comment and feedback from the TAC 3:20 Scheduling Future Meetings (10 mins) Meeting #2 Conference Call: August 30 or 31 Meeting #3 In-Person: Early October Meeting #4 Conference Call: Early November 3:30 Time for Questions

3 I. WHAT IS THE SWRP: Purpose and Goals The Madera County Storm Water Resource Plan (SWRP) is a first of its kind watershed based storm water plan that will establish an integrated, holistic, and coordinated storm water run-off management strategy for the entire County.

4 I. WHAT IS THE SWRP: Purpose and Goals Development of the SWRP is grant-funded and being led by the County of Madera in coordination with a Technical Advisory Committee, Stakeholder Group, and community members.

5 I. WHAT IS THE SWRP: Purpose and Goals The purpose of the SWRP is to identify and prioritize projects to bring to the top those multi-benefit projects that can best meet the identified priorities on a watershed basis.

6 I. WHAT IS THE SWRP: Purpose and Goals Outcome of the plan is to provide the guidance and tools to support the region in developing more competitive projects for state-wide grant funding opportunities to achieve watershed and regional planning goals.

7 I. MADERA SWRP TAC: Roles and Responsibilities TECHNICAL ADVISOR RESPONSIBILITIES: Review methodology and provide feedback on metrics Review spatial analysis Assist in defining criteria weight for project prioritization Review the draft SWRP Plan and provide feedback Provide comments throughout the SWRP process Participate in the next TAC meeting Provide input on draft projects and new project concepts (optional and requires clearly defining any potential conflict of interests) flow control detention retention filtration infiltration treatment slow spread soak

8 III. SWRP PROCESS: Prioritization Methodology Project Ranking An objective method to rank project relative to a set of stormwater multi-benefits with two components: 1. Spatial Prioritization Analysis: Identify areas of greatest stormwater/dry weather flow impacts/potential benefits. 2. Project Multi-Benefits Assessment Combine multiple criteria for estimating overall value from SW multi-benefits of projects. Water Supply Water Quality Flooding Environmental Community

9 III. SWRP PROCESS: Prioritization Methodology Criteria Metrics Impacts + Potential Benefits Water supply Water quality Flood risk Quantitative measure of criteria Dry weather water use GW elevation change Subsidence GW recharge potential Modeled runoff Modeled pollutant loading Sold erodibility Length of impaired WB Impervious area Potential flooded area

10 III. SWRP PROCESS: Prioritization Methodology Runoff & Pollutant Modeling Modified version of swtelr Probabilistic local rainfall inputs Publically available spatial inputs USDA curve number for runoff RUSLE for erosion

11 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs Runoff Ratio Particulate Pollutant Loading

12 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs MS4 Scale Stormwater Runoff

13 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs Groundwater Recharge Potential Dry Weather Water Use

14 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs Flooding Potential Groundwater Level Reductions

15 III. SWRP PROCESS: Prioritization Methodology Proposed Metric Weights

16 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs Water Supply Score Water Quality Score Flooding Score

17 III. SWRP PROCESS: Prioritization Methodology Draft Regional Spatial Outputs Overall Regional Impact/Benefit Score

18 III. SWRP PROCESS: Prioritization Methodology Criteria/Benefit Summary Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) 1 Water Quality Impacts Spatial Prioritization 2 Analysis Water Supply Impacts Is the project located in, and/or directly benefit a subwatershed with identified water quality impacts? Is the project located in, and/or directly benefit a subwatershed with identified water supply impacts? Yes/No 10 Yes/No 10 5% 0 23% 0 3 Flood Impacts Is the project located in a Potential Flooded Area? Yes/No 10 3% 0

19 III. SWRP PROCESS: Prioritization Methodology Criteria/Benefit Summary Rating Scale (1-10) Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Possible Points Project Score a. Support compliance with applicable permit and/or TMDL requirements Yes/No 3 b. Increase the filtration and/or treatment of 4 Water Quality runoff Volume Treated 3 c. Provide nonpoint source pollution control Pollutant Load Reduction 2 d. Re-establish natural water drainage and Watershed - 2 treatment Volume Treated Based Modeling a. Water supply reliability 3 5 Water Supply b. Water conservation Volume Added or Saved 2 c. Conjunctive use 3 a. Decrease flood risk by reducing runoff 6 Flood Management rate and/or volume Volume Decreased 7 b. Reduce sanitary sewer 3

20 III. SWRP PROCESS: Prioritization Criteria Project Multi-Benefits Assessment Criteria Number 7 8 Project Task Criteria/Benefit Criteria Description Unit of Measurement Project Solicitation Environmental (Protection and Improvement) Benefit to a Disadvantaged Community (DAC) 9 Project Capital Cost a. Provide environmental and habitat protection improvement, via i. Wetland enhancement/creation; ii. Riparian enhancement; and/or iii. Instream flow improvement b. Reduce energy use, greenhouse gas emissions, or provide carbon sink Possible Points c. Reestablish the natural hydrograph 3 d. Increase urban green space 1 e. Improve water temperature 1 Is the project located in, and/or directly benefit a DAC? Compares the estimated capital cost for each project, with the most expensive alternatives ranking less favorably. Yes/No, Size and/or Rate Yes/No and Size Dollars 10 Rating Scale (1-10) Project Score

21 III. SWRP PROCESS: Prioritization Methodology Criteria/Benefit Summary Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score a. Employment opportunities Community Benefits b. Community Involvement 2.5 Size and/or # c. Public education 2.5 d. Enhance and/or create recreational and public use areas 2.5 a. Project Developed Using a Metrics Driven 5 Approach? 11 Project Development Yes/No and % b. Does the project provide Regional Project 5 Benefits? Solicitation a. Is the project ready to implement? 2 b. Is the project cost well defined? 2 c. Is the land currently owned by a public agency or does it need to be acquired? 2 12 Project Readiness d. Is the environmental permitting process Yes/No and/or % complete or not yet started? 2 e. Does the lead agency have funds available to satisfy the 50% local funding 2 match?

22 IV. SWRP PROCESS: Questions or Comments? How can we transform the roof? evapotranspiration biodiversity How can we transform the walls? retention infiltration filtration treatment How can we transform the ground? storage infiltration

23 V. SWRP PROCESS: Criteria Weighting Scoring Projects Based on Weighted Criteria For each of the multi-benefit criteria: Step #1: Determine the Project Score Project Score is a measure of how well a project satisfies the criteria. Step #2: Project Score x Criteria Weight = Criteria Score Step #3: Sum of all Criteria Scores = Final Project Score Final Project Score is a measure of how well a project satisfies ALL the criteria Step #4: Compare Final Project Scores of all Projects and Rank Projects

24 V. SWRP PROCESS: Criteria Weighting Example Criteria Weighting Located in Watershed with Water Quality Impacts Located in a Watershed with Water Supply Impacts Water Quality Benefits Water Supply Benefits Flood Management Benefits Environmental Benefits DAC Benefits Project Capital Cost Community Benefits Project Development Project Readiness HIGH LOW

25 V. SWRP PROCESS: Criteria Weighting Input from Stakeholder Meeting #1 - July 13, 2017

26 V. SWRP PROCESS: Criteria Weighting Input from Stakeholder Meeting #1 - July 13, 2017 Criteria Importance from Stakeholder Input groundwater recharge project location benefits water supply water supply residental project location benefits water supply appropriate allocations dac benefits water quality regional projects project development environmental benefits flood management project capital cost community benefits risk

27 V. SWRP PROCESS: Criteria Weighting Input from Stakeholder Meeting #1 - July 13, 2017 Stakeholder Input Category Prioritization Criteria/Benefit Total Votes Criteria Weight risk Project Readiness 1 1% community benefits Community Benefits 2 3% project capital cost Project Capital Cost 3 4% flood management Flood Management 4 6% Environmental (Protection and environmental benefits Improvement) 6 9% project development 1 Project Development regional projects 6 10% water quality Water Quality 7 10% Benefit to a Disadvantaged dac benefits Community (DAC) 8 11% appropriate allocations 1 residental project location benefits water supply 3 water supply Water Supply 8 46% project location benefits water supply 10 groundwater recharge 10 Total %

28 V. SWRP PROCESS: Criteria Weighting Stakeholder Criteria Weighting Located in Watershed with Water Supply Impacts Water Supply Benefits DAC Benefits Located in a Watershed with Water Quality Impacts Water Quality Benefits Project Development Environmental Benefits Flood Management Benefits Project Capital Cost Community Benefits Project Readiness HIGH LOW

29 V. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Divert stormwater from a new development to a 40 ac recharge area. Att Figure 1-1

30 V. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) 1 Spatial Prioritization Analysis Water Quality Impacts 2 Water Supply Impacts Is the project located in, and/or directly benefit a subwatershed with identified water quality impacts? Is the project located in, and/or directly benefit a subwatershed with identified water supply impacts? Yes/No % 0.40 Yes/No % Flood Impacts Potential Flooded Area Acres % 0.23 County of Madera Boundary HUC12 watersheds County of Madera Boundary County of Madera Boundary HUC12 watersheds HUC12 watersheds Water Supply Score Flooding Impacts Score

31 V. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed a. Support compliance with applicable permit and/or TMDL requirements Yes/No 3 2 b. Increase the filtration and/or treatment of Water Quality runoff Volume Treated 5% 0.30 c. Provide nonpoint source pollution control Pollutant Load Reduction 2 0 d. Re-establish natural water drainage and Watershed treatment Volume Treated Based Modeling a. Water supply reliability Water Supply b. Water conservation Volume Added or Saved % 1.14 c. Conjunctive use 3 3 a. Decrease flood risk by reducing runoff Flood Management rate and/or volume Volume Decreased 3% 0.17 b. Reduce sanitary sewer 3 0

32 V. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number 7 8 Project Task Criteria/Benefit Criteria Description Unit of Measurement Project Solicitation Environmental (Protection and Improvement) Benefit to a Disadvantaged Community (DAC) 9 Project Capital Cost a. Provide environmental and habitat protection improvement, via i. Wetland enhancement/creation; ii. Riparian enhancement; and/or iii. Instream flow improvement b. Reduce energy use, greenhouse gas emissions, or provide carbon sink Yes/No, Size and/or Rate Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) 9% 0.09 c. Reestablish the natural hydrograph 3 1 d. Increase urban green space 1 0 e. Improve water temperature 1 0 Is the project located in, and/or directly benefit a DAC? Yes/No and Size % 1.14 Compares the estimated capital cost for each project, with the most expensive alternatives Dollars % 0.21 ranking less favorably.

33 V. SWRP PROCESS: Prioritization of Example Project Example Project: Root Creek Avenue 10 Intentional Recharge Project Criteria Number Project Task Criteria/Benefit Criteria Description Unit of Measurement Rating Scale (1-10) Possible Points Project Score Criteria Weight Proposed Critiera Score (Project Score x Criteria Weight) a. Employment opportunities Community Benefits b. Community Involvement Size and/or # c. Public education % 0.04 d. Enhance and/or create recreational and public use areas a. Project Developed Using a Metrics Driven 5 5 Approach? 11 Project Development Yes/No and % 10% 0.50 b. Does the project provide Regional Project 5 3 Benefits? Solicitation a. Is the project ready to implement? 2 0 b. Is the project cost well defined? 2 2 c. Is the land currently owned by a public agency or does it need to be acquired? Project Readiness d. Is the environmental permitting process Yes/No and/or % 1% complete or not yet started? e. Does the lead agency have funds available to satisfy the 50% local funding match? 2 2 Sum of all Criteria Project Scores = 5.81/10

34 VI. SWRP PROCESS: Questions or Comments? How can we transform the roof? evapotranspiration biodiversity How can we transform the walls? retention infiltration filtration treatment How can we transform the ground? storage infiltration

35 VII. SWRP PROCESS: Schedule» July - Aug. 2017: Call for Projects!» August - September 2017: New Project Concept Development & Project Prioritization. (TAC Meeting #2)» October 2017: Draft SWRP ready for public review and comment. (TAC Meeting #3)» November 2017: Public & Stakeholder Meeting #2 (TAC Meeting #4)» December 2017: Final SWRP

36 VIII. SWRP PROCESS: Next Steps» SOLICIT project information from Stakeholders and Community Members via Project Solicitation Form VISIT: Submit forms by August 21, 2017» Identify and develop NEW project concepts for inclusion in the SWRP» Present project prioritization results and draft SWRP October 2017 Please direct any questions about the SWRP to Dario Dominguez at